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Dubuisson N, de Maere d'Aertrijcke O, Marta M, Gnanapavan S, Turner B, Baker D, Schmierer K, Giovannoni G, Verma V, Docquier MA. Anaesthetic management of people with multiple sclerosis. Mult Scler Relat Disord 2023; 80:105045. [PMID: 37866022 DOI: 10.1016/j.msard.2023.105045] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 08/27/2023] [Accepted: 09/29/2023] [Indexed: 10/24/2023]
Abstract
There is a lack of published guidelines on the management of patients with multiple sclerosis (MS) undergoing procedures that require anaesthesia and respective advice is largely based on retrospective studies or case reports. The aim of this paper is to provide recommendations for anaesthetists and neurologists for the management of patients with MS requiring anaesthesia. This review covers issues related to the anaesthetic management of patients with MS, with a focus on preoperative assessment, choice of anaesthetic techniques and agents, side-effects of drugs used during anaesthesia and their potential impact on the disease evolution, drug interactions that may occur, and the need to use monitoring devices. A systematic PubMed research was performed to retrieve relevant articles.
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Affiliation(s)
- N Dubuisson
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Neuromuscular Reference Center, Department of Neurology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, Brussels 1200, Belgium.
| | - O de Maere d'Aertrijcke
- Department of Anesthesia and Perioperative Medicine, Cliniques Universitaires Saint-Luc, St Luc Hospital, Avenue Hippocrate 10, Brussels 1200, Belgium
| | - M Marta
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Clinical Board Medicine (Neuroscience), The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - S Gnanapavan
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Clinical Board Medicine (Neuroscience), The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - B Turner
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Clinical Board Medicine (Neuroscience), The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - D Baker
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK
| | - K Schmierer
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Clinical Board Medicine (Neuroscience), The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - G Giovannoni
- Faculty of Medicine and Dentistry, Blizard Institute (Neuroscience), Queen Mary University London, 4 Newark Street, London E1 2AT, UK; Clinical Board Medicine (Neuroscience), The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - V Verma
- Department of Anesthesia, Royal London Hospital, Barts Health NHS Trust, London, UK
| | - M-A Docquier
- Department of Anesthesia and Perioperative Medicine, Cliniques Universitaires Saint-Luc, St Luc Hospital, Avenue Hippocrate 10, Brussels 1200, Belgium
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Zhang FW, Trackey PD, Verma V, Mandes GT, Calabro RL, Presot AW, Tsay CK, Lawton TJ, Zammit AS, Tang EM, Nguyen AQ, Munz KV, Nagelli EA, Bartolucci SF, Maurer JA, Burpo FJ. Cellulose Nanofiber-Alginate Biotemplated Cobalt Composite Multifunctional Aerogels for Energy Storage Electrodes. Gels 2023; 9:893. [PMID: 37998983 PMCID: PMC10671317 DOI: 10.3390/gels9110893] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/06/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023] Open
Abstract
Tunable porous composite materials to control metal and metal oxide functionalization, conductivity, pore structure, electrolyte mass transport, mechanical strength, specific surface area, and magneto-responsiveness are critical for a broad range of energy storage, catalysis, and sensing applications. Biotemplated transition metal composite aerogels present a materials approach to address this need. To demonstrate a solution-based synthesis method to develop cobalt and cobalt oxide aerogels for high surface area multifunctional energy storage electrodes, carboxymethyl cellulose nanofibers (CNF) and alginate biopolymers were mixed to form hydrogels to serve as biotemplates for cobalt nanoparticle formation via the chemical reduction of cobalt salt solutions. The CNF-alginate mixture forms a physically entangled, interpenetrating hydrogel, combining the properties of both biopolymers for monolith shape and pore size control and abundant carboxyl groups that bind metal ions to facilitate biotemplating. The CNF-alginate hydrogels were equilibrated in CaCl2 and CoCl2 salt solutions for hydrogel ionic crosslinking and the prepositioning of transition metal ions, respectively. The salt equilibrated hydrogels were chemically reduced with NaBH4, rinsed, solvent exchanged in ethanol, and supercritically dried with CO2 to form aerogels with a specific surface area of 228 m2/g. The resulting aerogels were pyrolyzed in N2 gas and thermally annealed in air to form Co and Co3O4 porous composite electrodes, respectively. The multifunctional composite aerogel's mechanical, magnetic, and electrochemical functionality was characterized. The coercivity and specific magnetic saturation of the pyrolyzed aerogels were 312 Oe and 114 emu/gCo, respectively. The elastic moduli of the supercritically dried, pyrolyzed, and thermally oxidized aerogels were 0.58, 1.1, and 14.3 MPa, respectively. The electrochemical testing of the pyrolyzed and thermally oxidized aerogels in 1 M KOH resulted in specific capacitances of 650 F/g and 349 F/g, respectively. The rapidly synthesized, low-cost, hydrogel-based synthesis for tunable transition metal multifunctional composite aerogels is envisioned for a wide range of porous metal electrodes to address energy storage, catalysis, and sensing applications.
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Affiliation(s)
- Felita W. Zhang
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Paul D. Trackey
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Vani Verma
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Galen T. Mandes
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Rosemary L. Calabro
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
- U.S. Army Combat Capabilities Development Command-Armaments Center, Watervliet Arsenal, NY 12189, USA; (S.F.B.); (J.A.M.)
| | - Anthony W. Presot
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Claire K. Tsay
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Timothy J. Lawton
- U.S. Army Combat Capabilities Development Command-Soldier Center, Natick, MA 01760, USA;
| | - Alexa S. Zammit
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Edward M. Tang
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Andrew Q. Nguyen
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Kennedy V. Munz
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
| | - Enoch A. Nagelli
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
- Photonics Research Center, United States Military Academy, West Point, NY 10996, USA
| | - Stephen F. Bartolucci
- U.S. Army Combat Capabilities Development Command-Armaments Center, Watervliet Arsenal, NY 12189, USA; (S.F.B.); (J.A.M.)
| | - Joshua A. Maurer
- U.S. Army Combat Capabilities Development Command-Armaments Center, Watervliet Arsenal, NY 12189, USA; (S.F.B.); (J.A.M.)
| | - F. John Burpo
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA; (F.W.Z.); (P.D.T.); (V.V.); (G.T.M.); (R.L.C.); (A.W.P.); (C.K.T.); (A.S.Z.); (E.M.T.); (A.Q.N.); (K.V.M.); (E.A.N.)
- Photonics Research Center, United States Military Academy, West Point, NY 10996, USA
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Verma V, Schafer LL. One-Pot Sequential Hydroamination Protocol for N-Heterocycle Synthesis: One Method To Access Five Different Classes of Tri-Substituted Pyridines. J Org Chem 2023; 88:1378-1384. [PMID: 36634317 DOI: 10.1021/acs.joc.2c02155] [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: 01/14/2023]
Abstract
Tri-substituted pyridines are important scaffolds that can be found in a plethora of commercially available drugs. A one-pot general method for the selective synthesis of less explored/challenging patterns of tri-substituted pyridines is described. Hydroamination of alkynes with commercially available N-triphenylsilylamine generates N-silylenamines. These in situ generated N-silylenamines, upon reaction with α,β-unsaturated carbonyl compounds and subsequent oxidation, furnish 25 examples of selectively substituted 2,4,5-, 2,3,4-, 3,4,5-, 2,3,5-, and 2,3,6-trisubstituted pyridines in up to 78% yield. The reaction features high functional group compatibility providing an expeditious and general approach for the assembly of selectively substituted tri-substituted pyridine derivatives. The robustness and practicality of the reaction have been demonstrated in a gram-scale reaction.
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Affiliation(s)
- Vani Verma
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British ColumbiaV6T 1Z1, Canada
| | - Laurel L Schafer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British ColumbiaV6T 1Z1, Canada
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Lange F, Verma V, Harvey-Jones K, Mitra S, Tachtsidis I. Neonatal Brain Temperature Monitoring Based on Broadband Near-Infrared Spectroscopy. Adv Exp Med Biol 2023; 1438:167-172. [PMID: 37845456 DOI: 10.1007/978-3-031-42003-0_26] [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] [Indexed: 10/18/2023]
Abstract
We present here the initial development of a novel algorithm based on broadband near-infrared spectroscopy (bNIRS) data to estimate the changes in brain temperature (BT) in neonates. We first explored the validity of the methodology on a simple numerical phantom and reported good agreements between the theoretical and retrieved values of BT and hemodynamic parameters changes, which are the parameters usually targeted by bNIRS. However, we noted an underestimation of the absolute values of temperature and haemoglobins' concentration changes when large variations of tissue saturation were induced, probably due to a crosstalk between the species in this specific case. We then tested this methodology on data acquired on 2 piglets during a protocol that induces seizures. We showed that despite a decrease in rectal temperature (RT) over time (-0.1048 °C 1.5 h after seizure induction, 95% CI: -0.1035 to -0.1061 °C), BT was raising (0.3122 °C 1.5 h after seizure induction, 95% CI: 0.3207 to 0.3237 °C). We also noted that the piglet displaying the largest decrease in RT also displays the highest increase in BT, which could be a marker of the severity of the seizure induced brain injury. These initial results are encouraging and show that having access to the changes in BT non-invasively could help to better understand the impact of BT on injury severity and to improve the current cooling methodologies in the neonatal neurocritical care following neonatal encephalopathy.
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Affiliation(s)
- F Lange
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK.
| | - V Verma
- Institute for Women's Health, University College London, London, UK
| | - K Harvey-Jones
- Institute for Women's Health, University College London, London, UK
| | - S Mitra
- Institute for Women's Health, University College London, London, UK
| | - I Tachtsidis
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
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Vidal-Ferràndiz A, Ginestar D, Carreño A, Verdú G, Dokhane A, Verma V, Perin Y, Herb J, Mylonakis A, Demazière C, Vinai P. Modelling and simulations of reactor neutron noise induced by mechanical vibrations. ANN NUCL ENERGY 2022. [DOI: 10.1016/j.anucene.2022.109300] [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: 11/01/2022]
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Abstract
A summary of the catalytic synthesis and reactivity of N-silylated amines is presented. Dehydrocoupling of amines with silanes, hydrosilylation of imines and dealkenylative coupling of amines with vinylsilanes are three ways to achieve their catalytic syntheses. The resultant N-silylamines serve as substrates in a variety of reactions, including C-N and C-C bond forming reactions, and are preferred in transformations because of the facile Si-N hydrolytic cleavage to reveal free amine products upon reaction completion. This review highlights the distinct electronic properties of N-silyl amines, N-silyl imines and N-silyl enamines that result in complementary reactivity to that of parent non-silyl variants.
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Affiliation(s)
- Vani Verma
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Ana Koperniku
- Faculty of Pharmaceutical Sciences, The University of British Columbia, 2405 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada
| | - Peter M Edwards
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Laurel L Schafer
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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Tejaswi V, Bosco J, Verma V, Anjali, Pathak M, Samad H, Tiwari A, Chouhan V, Maurya V, Sarkar M, Singh G. Seasonal alterations in blood biochemical parameters among zebu and crossbred cattle. BIOL RHYTHM RES 2022. [DOI: 10.1080/09291016.2022.2098619] [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: 11/02/2022]
Affiliation(s)
- V. Tejaswi
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - J. Bosco
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - V. Verma
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - Anjali
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - M.C Pathak
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - H.A. Samad
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - A.K. Tiwari
- Division of Biological Standardization, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - V.S. Chouhan
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - V.P. Maurya
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - M. Sarkar
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - Gyanendra Singh
- Division of Physiology & Climatology, ICAR-Indian Veterinary Research Institute, Izatnagar, India
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Khan SS, Zargar SA, Gupta VK, Verma V, Rasool S. Isolation and Identification of Bacterial and Fungal Endophytes from Selected Plants of Western Himalayas in Prospect for Bioactivities of Economic Importance. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022050090] [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: 11/23/2022]
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Verma V, Chandrashekar C, Radhakrishnan R, Solomon MC. Immunohistochemical expression of Cyclooxygenase 2 reflects the proliferative activity in the epithelium of odontogenic lesions. d3000 2022. [DOI: 10.5195/d3000.2022.205] [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: 11/20/2022] Open
Abstract
Purpose: Odontogenic cysts and tumors comprise a major component of lesions of the oral and maxillofacial region. The pathogenesis of these lesions involves the interaction between the odontogenic epithelium and the ectomesenchyme. However, the clinical behavior of these biological entities is unpredictable. The aim of this study was to evaluate the role of Cyclooxygenase 2 (COX-2) in the pathogenesis and prognostication of odontogenic lesions.Material and method: : In this study formalin-fixed paraffin-embedded tissue section of Odontogenic Keratocyst (n=10) Dentigerous cyst (n=10), Radicular cyst (n=10) and unicystic ameloblastoma (n=10) were immunohistochemically stained with COX-2 (NCL2-COX-2- 4H12) and with Ki 67 (Ki-67 GM001) using standard staining protocols. The cytoplasmic expression of COX-2 in all the lesions was semi-quantitatively assessed. The pattern of expression of COX-2 among the different odontogenic lesions was statistical analyzed using the ANOVA test and the chi-square test.Results: All the 40 odontogenic lesions that were evaluated expressed COX-2 immunohistochemically. A high number of odontogenic epithelial cells expressed COX-2 in most of the odontogenic keratocyst, radicular cyst and unicystic ameloblastomas. The expression of COX-2 was significantly (p=0.036) higher in Unicystic Ameloblastomas and Radicular cyst compared to that of Odontogenic Keratocyst and the dentigerous cyst.Conclusion: The recognition that expression of COX-2 by odontogenic epithelial cells may indeed shed a new light on the biological mechanisms involved in the development of these benign yet aggressive lesions of the jaws. An insight into the molecular interactions occurring in the odontogenic epithelium will aid in better management of these lesions.
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Shiue K, Cerra-Franco A, Verma V, Arbab M, Langer M, Deig C, II MT, Anthony P, Shan M, Althouse S, Zang Y, Bartlett G, Holmes J, DesRosiers C, Maxim P, Frye D, Kong F, Jin J, Watson G, Zellars R, Lautenschlaeger T. Phase I Trial of Dose-Escalated Five-Fraction Stereotactic Ablative Radiotherapy for Early-Stage Lung Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1270] [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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Haque W, Verma V, Teh B, Butler E, Hatch S, Desai M, Arentz S, Jain D, Schwartz M, Chevli N, Farach A. Postmastectomy Radiation Therapy Following Pathologic Complete Nodal Response to Neoadjuvant Chemotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sharma M, Verma V, Bairwa NK. Genetic interaction between RLM1 and F-box motif encoding gene SAF1 contributes to stress response in Saccharomyces cerevisiae. Genes Environ 2021; 43:45. [PMID: 34627408 PMCID: PMC8501602 DOI: 10.1186/s41021-021-00218-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 09/19/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Stress response is mediated by the transcription of stress-responsive genes. The F-box motif protein Saf1p is involved in SCF-E3 ligase mediated degradation of the adenine deaminase, Aah1p upon nutrient stress. The four transcription regulators, BUR6, MED6, SPT10, SUA7, are listed for SAF1 in the genome database of Saccharomyces cerevisiae. Here in this study, we carried out an in-silico analysis of gene expression and transcription factor databases to understand the regulation of SAF1 expression during stress for hypothesis and experimental analysis. RESULT An analysis of the GEO profile database indicated an increase in SAF1 expression when cells were treated with stress agents such as Clioquinol, Pterostilbene, Gentamicin, Hypoxia, Genotoxic, desiccation, and heat. The increase in expression of SAF1 during stress conditions correlated positively with the expression of RLM1, encoding the Rlm1p transcription factor. The expression of AAH1 encoding Aah1p, a Saf1p substrate for ubiquitination, appeared to be negatively correlated with the expression of RLM1 as revealed by an analysis of the Yeastract expression database. Based on analysis of expression profile and regulatory association of SAF1 and RLM1, we hypothesized that inactivation of both the genes together may contribute to stress tolerance. The experimental analysis of cellular growth response of cells lacking both SAF1 and RLM1 to selected stress agents such as cell wall and osmo-stressors, by spot assay indicated stress tolerance phenotype similar to parental strain however sensitivity to genotoxic and microtubule depolymerizing stress agents. CONCLUSIONS Based on in-silico and experimental data we suggest that SAF1 and RLM1 both interact genetically in differential response to genotoxic and general stressors.
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Affiliation(s)
- Meenu Sharma
- Genome Stability Regulation Lab, School of Biotechnology, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, 182320, India
| | - V Verma
- Genome Stability Regulation Lab, School of Biotechnology, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, 182320, India
| | - Narendra K Bairwa
- Genome Stability Regulation Lab, School of Biotechnology, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, 182320, India.
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Sharma PK, Verma V, Chattopadhyay J, Vinod G. Large eddy fire simulation applications from nuclear industry. KERNTECHNIK 2021. [DOI: 10.1515/kern-2020-0052] [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: 11/15/2022]
Abstract
Abstract
A computational study has been carried out for predicting the behaviour of a pool fire source using the field-model based code Fire Dynamics Simulator (FDS). Time dependent velocity and temperature fields are predicted along with the resulting changes in the plume structure and its width. Firstly, a grid study was performed to find out the best grid size for this purpose. Then calculations were done which showed a very good agreement with earlier reported experimental based correlations for the temperature of the plume region. These studies have been extended to use this field-model based tools for modelling particular separate effect phenomena like puffing frequency and to validate against experimental data. There are several applications in nuclear industry like room fires, wildland fires, smoke or ash disposal, hydrogen transport in nuclear reactor containment, natural convection in building flows etc. In this paper the use of FDS with the advanced Large Eddy Simulation (LES) based CFD turbulence model is described for various applications: Fire simulation for Alpha storage, Bhabhatran teletherapy, pool fire for transport casks, fire PSA of a representative NPP, exhaust air fan buildings of a process plant and smoke dispersion in large fires around NPPs.
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Affiliation(s)
- P. K. Sharma
- Reactor Safety Division, Engg. Hall-7 Reactor Design & Development Group Bhabha Atomic Research Centre Trombay , Mumbai India
| | - V. Verma
- Reactor Safety Division, Engg. Hall-7 Reactor Design & Development Group Bhabha Atomic Research Centre Trombay , Mumbai India
| | - J. Chattopadhyay
- Reactor Safety Division, Engg. Hall-7 Reactor Design & Development Group Bhabha Atomic Research Centre Trombay , Mumbai India
| | - G. Vinod
- Reactor Safety Division, Engg. Hall-7 Reactor Design & Development Group Bhabha Atomic Research Centre Trombay , Mumbai India
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Abstract
Some of the KWU pre-KONVOI PWRs operating across Europe saw a systematic increase in the neutron noise levels over several cycles in the last decade, and subsequently, core internals’ movements, especially vibrations of fuel assemblies with specific designs were identified as one of the plausible causes. Therefore, it is important to develop computational methods that can allow to investigate and predict the reactor noise response to fuel assemblies vibrations. To this aim, the 3D nodal reactor dynamics code SIMULATE-3K is used at PSI with a special module called the ‘assembly vibration model’ that imitates time-dependent motions of fuel assemblies by dynamically modifying the water-gaps surrounding the laterally moving fuel assemblies. The varying water-gaps are represented by the variation in the corresponding two-group macroscopic cross sections generated using the lattice code CASMO-5 in 2D. The studies conducted so far to assess the methodology for full core noise simulations were based on assuming vibrations of a clamped-free cluster of fuel assemblies that are unsupported from both ends. However, as this represents a non-physical movement, further developments were made at PSI to allow simulating more realistic movements of fuel assemblies such as the cantilevered mode vibration. The updated methodology, along with evaluations of the simulated noise response to realistic vibration modes, is presented in this paper. Results show that, as expected, the radial and axial neutron noise behaviour follow the vibration pattern of the imposed time-dependent axial functions corresponding to the natural oscillation modes of the fuel assemblies, thereby providing confidence in the application of the developed methodology for numerical neutron noise analyses of the PWR cores.
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Haque W, Teh B, Butler E, Verma V, Lo S. Outcomes Following Stereotactic Radiosurgery or Whole Brain Radiation Therapy by Molecular Subtype of Metastatic Breast Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2062] [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: 11/17/2022]
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Barsky A, Carmona R, Santos P, Verma V, Both S, Bekelman J, Christodouleas J, Vapiwala N, Deville C. Comparative Clinical Outcomes and Patterns of Failure of Proton-Beam Therapy (PBT) versus Intensity-Modulated Radiotherapy (IMRT) for Prostate Cancer in the Postoperative Setting. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.500] [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: 10/23/2022]
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Chen D, Verma V, Patel R, Menon H, Welsh J. Absolute Lymphocyte Count Predicts Abscopal Responses and Outcomes in Patients Receiving Combined Immunotherapy and Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1711] [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: 10/23/2022]
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Patel R, Barsoumian H, Verma V, Cortez M, Welsh J. Low-Dose Radiation Decreases Cancer-Associated Fibroblasts and May Increase T-Cell Trafficking into Tumors. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1660] [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: 10/23/2022]
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Patel R, Guo C, Hong D, Chang J, Altan M, Chun S, Diab A, Davies M, Nguyen Q, Barsoumian H, Simon G, Glitza I, Tang C, Verma V, Comeaux N, Welsh J. Phase II Trial of Low-Dose Radiation for Metastases Progressing on Immunotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.976] [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: 10/23/2022]
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Venkatesulu BP, Chandrasekar VT, Girdhar P, Advani P, Sharma A, Elumalai T, Hsieh C, Elghazawy HI, Verma V, Krishnan S. A systematic review and meta-analysis of cancer patients affected by a novel coronavirus. medRxiv 2020:2020.05.27.20115303. [PMID: 32511470 PMCID: PMC7265691 DOI: 10.1101/2020.05.27.20115303] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Cancer patients with COVID-19 disease have been reported to have double the case fatality rate of the general population. MATERIALS AND METHODS A systematic search of PubMed/MEDLINE, Embase, Cochrane Central, Google Scholar, and MedRxiv was done for studies on cancer patients with COVID-19. Pooled proportions were calculated for categorical variables. Odds ratio and forest plots were constructed for both primary and secondary outcomes. The random-effects model was used to account for heterogeneity between studies. RESULTS This systematic review of 31 studies and meta-analysis of 181,323 patients from 26 studies involving 23,736 cancer patients is the largest meta-analysis to the best of our knowledge assessing outcomes in cancer patients affected by COVID-19. Our meta-analysis shows that cancer patients with COVID-19 have a higher likelihood of death (odds ratio, OR 2.54), which was largely driven by mortality among patients in China. Cancer patients were more likely to be intubated, although ICU admission rates were not statistically significant. Among cancer subtypes, the mortality was highest in hematological malignancies (OR 2.43) followed by lung cancer (OR 1.8). There was no association between receipt of a particular type of oncologic therapy and mortality. Our study showed that cancer patients affected by COVID-19 are a decade older than the normal population and have a higher proportion of co-morbidities. There was insufficient data to assess the association of COVID-directed therapy and survival outcomes in cancer patients. Despite the heterogeneity of studies and inconsistencies in reported variables and outcomes, these data could guide clinical practice and oncologic care during this unprecedented global health pandemic. CONCLUSION Cancer patients with COVID-19 disease are at increased risk of mortality and morbidity. A more nuanced understanding of the interaction between cancer-directed therapies and COVID-19-directed therapies is needed. This will require uniform prospective recording of data, possibly in multi-institutional registry databases.
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Affiliation(s)
- B P Venkatesulu
- Transitional year residency, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI 48202, United States
| | - V T Chandrasekar
- Department of Gastroenterology and Hepatology, University of Kansas Medical Center, Kansas City, KS 66160, United States
| | - P Girdhar
- Department of Radiation Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - P Advani
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Institutes of Health, National Cancer Institute, Bethesda, MD 20892, United States
| | - A Sharma
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - T Elumalai
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - C Hsieh
- Department of Radiation Oncology, Institute for Radiological Research, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan City, Taiwan
- Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston and The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - H I Elghazawy
- Department of Clinical Oncology, Faculty of Medicine, Ain Shams University, Abbaseya, Cairo, Egypt
| | - V Verma
- Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, Pennsylvania
| | - S Krishnan
- Department of Radiation Oncology, Mayo Clinic Florida, 4500 San Pablo Road S, Mayo 1N, Jacksonville, FL 32224, USA
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Ezenyi IC, Verma V, Singh S, Okhale SE, Adzu B. Ethnopharmacology-aided antiplasmodial evaluation of six selected plants used for malaria treatment in Nigeria. J Ethnopharmacol 2020; 254:112694. [PMID: 32092499 DOI: 10.1016/j.jep.2020.112694] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 10/24/2019] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sub - Saharan Africa has a high malaria burden and Nigeria accounts for majority of malaria cases worldwide. The aim of this study was to evaluate selected plants extracts used against malaria in Nigeria for antiplasmodial activity. MATERIALS AND METHODS An ethnomedicinal based - approach by literature survey was used to identify plants used in the study. The parts of the plant used were collected and extracted with 70% v/v ethanol; a portion of each extract was used to prepare successive solvent and residual fractions. Chloroquine-sensitive (3D7) P. falciparum strain and human embryonic kidney cells (HEK293) were used for antiplasmodial and cytotoxicity screening respectively. Hemolysis assay was also carried out on red blood cells (RBCs). Test for in vivo efficacy of an active extract was conducted in a mouse model of established P. berghei ANKA-infection. RESULTS A total of six plants; Andropogon schirensis, Celtis durandii, Chasmanthera dependens, Daniellia ogea, Icacina trichantha and Triumfetta cordifolia were selected and screened. Triumfetta cordifolia leaf extract was observed to display moderate in vitro antiplasmodial activity (IC50 = 48.09 μg/ml) and was non-toxic to HEK293 cells and erythrocytes. At a dose of 400 mg/kg, T. cordifolia significantly (p<0.001) suppressed parasitemia, significantly (p<0.001) inhibited RBC depletion and prolonged survival in infected mice. CONCLUSIONS T. cordifolia ethanol extract possesses antiplasmodial efficacy and this is the first report of its kind on the plant. It is a potential candidate for further studies to identify its mechanism of action.
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Affiliation(s)
- I C Ezenyi
- Department of Pharmacology and Toxicology, National Institute for Pharmaceutical Research and Development (NIPRD), Idu, Abuja, Nigeria.
| | - V Verma
- Special Center for Molecular Medicine, Jawaharlal Nehru University, Delhi, 110067, India
| | - S Singh
- Special Center for Molecular Medicine, Jawaharlal Nehru University, Delhi, 110067, India.
| | - S E Okhale
- Department of Medicinal Plant Research and Traditional Medicine, National Institute for Pharmaceutical Research and Development (NIPRD), Idu, Abuja, Nigeria
| | - B Adzu
- Department of Pharmacology and Toxicology, National Institute for Pharmaceutical Research and Development (NIPRD), Idu, Abuja, Nigeria
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22
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Jiang W, Verma V, Haque W, Moreno AC, Koshy M, Butler EB, Teh BS. Post-treatment mortality after definitive chemoradiotherapy versus resection for esophageal cancer. Dis Esophagus 2020; 33:5555765. [PMID: 31504359 DOI: 10.1093/dote/doz073] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 06/14/2019] [Accepted: 07/03/2019] [Indexed: 12/11/2022]
Abstract
In efforts to better characterize incidence and predictors of 30- and 90-day mortality following operative versus nonoperative approaches for locally advanced esophageal cancer (EC), we conducted a novel investigation of a large, contemporary US database. The National Cancer Database was queried for newly-diagnosed T1-3N0-1 squamous cell or adenocarcinoma receiving surgical-based therapy (esophagectomy alone or preceded by chemotherapy and/or radiotherapy) versus definitive chemoradiotherapy (dCRT). Statistics included graphing cumulative incidences of mortality before and following propensity score matching (PSM), based on age-based intervals. Cox regression determined factors independently predictive of 30- and 90-day mortality. Of 15,585 patients, 9,278 (59.5%) received surgical-based therapy and 6,307 (40.5%) underwent dCRT. In the unadjusted population, despite nonsignificant differences at 30 days (3.3% dCRT, 3.6% surgical-based), the dCRT cohort experienced higher 90-day mortality (11.0% vs. 7.5%, P < 0.001). Following PSM, however, dCRT patients experienced significantly lower 30-day mortality (P < 0.001), with nonsignificant differences at 90 days (P = 0.092). Surgical-based management yielded similar (or better) mortality as dCRT in ≤70-year-old patients; however, dCRT was associated with reduced mortality in subjects > 70 years old. In addition to the intervention group, factors predictive for 30- and 90-day mortality included age, gender, insurance status, facility type, comorbidity index, tumor location, histology, and T/N classification. In summary, surgical-based therapy for EC is associated with higher 30-day mortality, which becomes statistically similar to dCRT by 90 days. Differences between surgery and dCRT were most pronounced in patients > 70 years of age. These data may better inform shared decision-making between multidisciplinary providers and patients.
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Affiliation(s)
- W Jiang
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, TX, USA.,Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital and Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong Province, China
| | - V Verma
- Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA, USA
| | - W Haque
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, TX, USA
| | - A C Moreno
- Department of Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - M Koshy
- Department of Radiation Oncology, University of Chicago School of Medicine, Chicago, IL, USA
| | - E B Butler
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, TX, USA
| | - B S Teh
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, TX, USA
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Sun T, Huang J, Xu Y, Verma V, Jing B, Sun Y, Ruiz Orduna A, Tian H, Huang X, Xia S, Schafer L, Jetter R, Zhang Y, Li X. Redundant CAMTA Transcription Factors Negatively Regulate the Biosynthesis of Salicylic Acid and N-Hydroxypipecolic Acid by Modulating the Expression of SARD1 and CBP60g. Mol Plant 2020; 13:144-156. [PMID: 31733371 DOI: 10.1016/j.molp.2019.10.016] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [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: 03/10/2019] [Revised: 10/10/2019] [Accepted: 10/17/2019] [Indexed: 05/24/2023]
Abstract
Two signal molecules, salicylic acid (SA) and N-hydroxypipecolic acid (NHP), play critical roles in plant immunity. The biosynthetic genes of both compounds are positively regulated by master immune-regulating transcription factors SARD1 and CBP60g. However, the relationship between the SA and NHP pathways is unclear. CALMODULIN-BINDING TRANSCRIPTION FACTOR 1 (CAMTA1), CAMTA2, and CAMTA3 are known redundant negative regulators of plant immunity, but the underlying mechanism also remains largely unknown. In this study, through chromatin immunoprecipitation and electrophoretic mobility shift assays, we uncovered that CBP60g is a direct target of CAMTA3, which also negatively regulates the expression of SARD1, presumably via an indirect effect. The autoimmunity of camta3-1 is suppressed by sard1 cbp60g double mutant as well as ald1 and fmo1, two single mutants defective in NHP biosynthesis. Interestingly, a suppressor screen conducted in the camta1/2/3 triple mutant background yielded various mutants blocking biosynthesis or signaling of either SA or NHP, leading to nearly complete suppression of the extreme autoimmunity of camta1/2/3, suggesting that the SA and NHP pathways can mutually amplify each other. Together, these results reveal that CAMTAs repress the biosynthesis of SA and NHP by modulating the expression of SARD1 and CBP60g, and that the SA and NHP pathways are coordinated to optimize plant immune response.
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Affiliation(s)
- Tongjun Sun
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Jianhua Huang
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Yan Xu
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Vani Verma
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Beibei Jing
- National Institute of Biological Sciences, Beijing 102206, China
| | - Yulin Sun
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Alberto Ruiz Orduna
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Hainan Tian
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun, China
| | - Xingchuan Huang
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Shitou Xia
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Laurel Schafer
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Reinhard Jetter
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Yuelin Zhang
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Xin Li
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
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Hakeem S, Singh I, Sharma P, Verma V, Chandra R. in silico screening and molecular dynamics simulations study to identify novel potent inhibitors against Mycobacterium tuberculosis DnaG primase. Acta Trop 2019; 199:105154. [PMID: 31445897 DOI: 10.1016/j.actatropica.2019.105154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 08/15/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
Tuberculosis remains a major global health threat killing millions of people. Due to existing multiple drug resistance (MDR) and prolonged treatment it becomes necessary to explore novel drug targets in Mycobacterium tuberculosis (Mtb). DnaG primase, having a significant role in primer synthesis during initiation of DNA replication, has emerged as a promising drug target. The three dimensional (3D) model of its catalytic domain (Toprim) was constructed. Further, in silico screening of the three diverse chemical compound libraries against the modeled domain was carried out. Four top screened compounds were identified and evaluated by ADMET analysis. The stability of these compounds in complex with the Toprim domain was validated through 50 ns molecular dynamics simulations. Lys 101, Glu 137 and Asp 188 in the active site predominantly formed the hydrogen bonds with the top screened compounds. Hence, the drug-like compounds identified can be taken up for the further experimental investigation as anti-tubercular agents.
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Samad HA, Konyak YY, Latheef SK, Kumar A, Khan IA, Verma V, Chouhan VS, Verma MR, Maurya VP, Kumar P, Sarkar M, Singh G. Alpha lipoic acid supplementation ameliorates the wrath of simulated tropical heat and humidity stress in male Murrah buffaloes. Int J Biometeorol 2019; 63:1331-1346. [PMID: 31280374 DOI: 10.1007/s00484-019-01750-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/28/2018] [Revised: 05/17/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
A supplement which ameliorates temperature-humidity menace in food producing livestock is a prerequisite to develop climate smart agricultural packages. A study was conducted to investigate the heat stress ameliorative efficacy of alpha lipoic acid (ALA) in male Murrah water buffaloes (Bubalus bubalis). Eighteen animals (293.61 ± 4.66Kg Bwt) were randomly allocated into three groups (n = 6); NHSC (non-heat-stressed control), HS (heat-stressed) and HSLA (heat-stressed-supplemented with ALA@32 mg/kg Bwt orally) based on the temperature humidity index (THI) and ALA supplementation. HS and HSLA were exposed to simulated heat challenge in a climatically controlled chamber (40 °C) for 21 consecutive days, 6 h daily. Physiological responses viz. Respiration rate (RR), Pulse rate (PR) and Rectal temperature (RT) were recorded daily before and after heat exposure. Blood samples were collected at the end of heat exposure on days 1, 6, 11, 16, and 21 and on day 28 (7th day post exposure which is considered as recovery) for peripheral blood mononuclear cells (PBMCs) separation, followed by RNA and Protein extraction for Real time quantitative PCR and Western blot analysis respectively, of heat shock proteins (HSPs). Two-way repeated measure ANOVA was performed between groups at different experimental periods. RR (post exposure) in HS and HSLA was significantly higher (P < 0.05) than NHSC from day 1 onwards but HSLA varied significantly from the HS 8th day onwards. Post exposure RT and PR in both HS and HSLA varied (P < 0.05) from NHSC throughout the study; but between HS and HSLA, RT significantly varied on initial 2 days and last 6 days (from days 16 to 21). HSP70 mRNA expression significantly up regulated in high THI groups with respect to the low THI group throughout the experimental period. During chronic stress (days 16 and 21) HSP70 significantly (P < 0.05) increased in HS but not in HSLA (P > 0.05) with respect to NHSC. ALA supplementation up-regulates and sustains (P < 0.05) the expression of HSP90 in HSLA in comparison to the HS and NHSC. HSP105 expression was significantly up-regulated (P < 0.05) in HS on days 16 and 21 (during long-term exposure) but only on day 21 (P < 0.05) in HSLA. HSP70, HSP90, and HSP105 protein expression dynamics were akin to the mRNA transcript data between the study groups. In conclusion, supplementing ALA ameliorates the deleterious effect of heat stress as reflected by improved physiological and cellular responses. ALA supplementation improved cellular antioxidant status and sustained otherwise easily decaying heat shock responses which concertedly hasten the baton change from a limited window of thermo tolerance to long run acclimatization.
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Affiliation(s)
- H A Samad
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Y Y Konyak
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - S K Latheef
- Division of Pathology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - A Kumar
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - I A Khan
- Dolphin PG Institue of Biomedical & Natural Science, Dehradun, Uttarakhand, India
| | - V Verma
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - V S Chouhan
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - M R Verma
- Division of Livestock economics and statistics, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - V P Maurya
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Puneet Kumar
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - M Sarkar
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - G Singh
- Division of Physiology & Climatology, ICAR-IndianVeterinary Research Institute, Bareilly, Uttar Pradesh, India.
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Wegner R, Verma V, Abel S, Hasan S, Weksler B, Colonias A. P1.12-20 Surgical Resection Versus Stereotactic Body Radiation Therapy for T1-2 N0 Typical Bronchopulmonary Carcinoid Tumors. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1133] [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: 10/25/2022]
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Haque W, Verma V, Butler E, Teh B. Short-Term Mortality Associated with Definitive Chemoradiotherapy Versus Radical Cystectomy for Muscle-Invasive Bladder Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1946] [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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Metzger A, Hasan S, Wegner R, Verma V, Julian T, Trombetta M. Management Trends and Outcomes of Breast Angiosarcoma: Is Breast Conservation Feasible? Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.714] [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: 10/26/2022]
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Menon H, Ramapriyan R, Verma V, Barsoumian H, Cushman T, Younes A, Chen D, Cortez M, Erasmus J, de Groot P, Carter B, Hong D, Diab A, Glitza I, Heymach J, Tang C, Nguyen Q, Chun S, Welsh J. Influence of Low-Dose Radiation on Abscopal Responses in NSCLC Metastases: Analysis of Three Prospective Institutional Trials. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1364] [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: 10/26/2022]
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Verma V, Chandrashekar C. Evaluation of SOX2 and podoplanin expression in oral epithelial dysplasia and its correlation with malignant transformation. ACTA ACUST UNITED AC 2019; 10:e12450. [PMID: 31464104 DOI: 10.1111/jicd.12450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 02/08/2019] [Revised: 07/18/2019] [Accepted: 07/29/2019] [Indexed: 12/14/2022]
Abstract
AIM Oral carcinogenesis cascade is a complex process, characterized by variable numbers of genetic and epigenetic alterations of various genes with manifold roles that could serve as biological hallmarks. This study was undertaken to assess the protein expression of SOX2 and podoplanin in oral epithelial dysplasia and correlate the expression with clinicopathological parameters and risk of malignant transformation. METHODS SOX2 and podoplanin expression were analyzed in 60 cases of oral epithelial dysplasia. The association between SOX2 and podoplanin expression with various clinicopathological parameters and transformation to oral cancer was analyzed. RESULTS A higher Histoscore was seen in 55% of moderate and 30% of severe dysplasia. 25% of the cases showed a negative podoplanin expression and 30% of patients had higher podoplanin expression (score 2 and 3). Though there was significant association of both SOX2 and podoplanin expression with the degree of dysplasia, the association of their expression with transformation to oral squamous cell carcinoma did not reach statistical significance. CONCLUSION Alteration in SOX2 and podoplanin is likely an important event in head and neck carcinogenesis; however, their expression may be valuable only in a few cases of oral epithelial dysplasia to assess the risk of malignant transformation.
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Affiliation(s)
- Vani Verma
- Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Chetana Chandrashekar
- Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, India
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Verma V, Haque W, Butler E, Teh B, Rusthoven C. Short-Term Mortality Associated with Definitive Chemoradiotherapy Versus Trimodality Therapy for Locally Advanced Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.01.043] [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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Foster C, Sher D, Rusthoven C, Verma V, Spiotto M, Weichselbaum R, Koshy M. Overall Survival According to Systemic and Radiation Treatment Approaches in Metastatic Non-Small-Cell Lung Cancer: A National Cancer Database Analysis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.01.045] [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: 10/27/2022]
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Haque W, Verma V, Butler EB, Teh BS. Trimodality therapy for esophageal cancer at high volume facilities is associated with improved postoperative outcomes and overall survival. Dis Esophagus 2019; 32:5057168. [PMID: 30052835 DOI: 10.1093/dote/doy067] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Trimodality therapy is the standard of care for locally advanced resectable esophageal cancer (EC) but carries morbidity and mortality risks; thus, therapy at high-volume facilities (HVFs) may offer advantages. This investigation studied postoperative outcomes and overall survival (OS) in EC patients receiving trimodality therapy at HVFs versus lower-volume facilities (LVFs). The National Cancer Data Base was queried for patients with locally advanced EC receiving trimodality therapy. HVFs referred to the 90th percentile of case volume. Multivariate logistic regression determined factors associated with treatment at HVFs, the Kaplan-Meier analysis compared OS between the HVF and LVF groups, and the Cox proportional hazards modeling determined variables associated with OS. Sensitivity analysis evaluated the impact of varying the HVF definition cutoff on OS. A total of 3,229 patients met study criteria, including 330 (10%) treated at HVFs and 2,899 (90%) at LVFs. Treatment at HVFs was associated with decreased 30-day mortality (1.2% vs. 3.3%, P = 0.044) and trends toward lower 90-day mortality (4.8% vs. 7.8%, P = 0.055) and the length of postoperative hospitalization (11.2 vs. 12.3d, P = 0.059). HVF patients experienced higher median OS (55 vs. 36 months, P = 0.004), which also independently correlated on the Cox multivariate analysis (P = 0.001). Sensitivity analysis showed similar results as the HVF/LVF cutoff was decreased until the 80th percentile. This is the first study demonstrating that the trimodality management of EC at HVFs is associated with improved postoperative outcomes and survival. These data have implications for multidisciplinary oncologic providers, in addition to patient counseling by both referring and treating clinicians.
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Affiliation(s)
- W Haque
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, Texas
| | - V Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - E B Butler
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, Texas
| | - B S Teh
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, Texas
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Adeberg S, Jensen A, Akbaba S, Katayama S, Verma V, Bernhardt D, Nikoghosyan A, Abollahi A, Plinkert P, Rieken S, Muenter M, Juergen D. PO-169 The Phase l/ll ACCEPT Trial: Cetuximab and IMRT with Carbon Ion Boost for Adenoid Cystic Carcinoma. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30335-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
AIMS The aims of this study were to evaluate the efficacy of preoperative denosumab in achieving prospectively decided intention of therapy in operable giant cell tumour of bone (GCTB) patients, and to document local recurrence-free survival (LRFS). PATIENTS AND METHODS A total of 44 patients received preoperative denosumab: 22 to facilitate curettage, 16 to facilitate resection, and six with intent of converting resection to curettage. There were 26 male and 18 female patients. The mean age was 27 years (13 to 47). RESULTS The mean number of denosumab treatments was five (2 to 7) per patient. In 42 of 44 patients (95%), denosumab helped to achieve prospectively decided intention. A total of 41 patients were available for follow-up at a mean follow-up of 34 months (24 to 48). There were 12 local recurrences (29%), in 11 patients (11/25, 44%) who had curettage and in one patient (1/16, 6%) who had resection. The mean time to local recurrence was 16 months (8 to 25). The LRFS was 76% at two years: 94% for cases with resection and 64% for cases with curettage (p = 0.013). CONCLUSION Although local control rates are unlikely to improve with use of preoperative denosumab, a short preoperative course of denosumab can facilitate surgery in certain cases of operable GCTB, with a high risk of local recurrence making curettage or resection technically easier. It may also help in converting a lesion requiring resection to a lesion that could possibly be treated with curettage.
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Affiliation(s)
- A Puri
- Tata Memorial Centre, HBNI, Mumbai, India
| | - A Gulia
- Tata Memorial Centre, HBNI, Mumbai, India
| | - P Hegde
- Tata Memorial Centre, HBNI, Mumbai, India
| | - V Verma
- Tata Memorial Centre, HBNI, Mumbai, India
| | - B Rekhi
- Tata Memorial Centre, HBNI, Mumbai, India
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Singh A, Yadav CB, Tabassum N, Bajpeyee AK, Verma V. Stem cell niche: Dynamic neighbor of stem cells. Eur J Cell Biol 2018; 98:65-73. [PMID: 30563738 DOI: 10.1016/j.ejcb.2018.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/09/2018] [Accepted: 12/11/2018] [Indexed: 12/19/2022] Open
Abstract
Stem cell niche is a specialized and dynamic microenvironment around the stem cells which plays a critical role in maintaining the stemness properties of stem cells. Over the years, advancement in the research activity has revealed the various important aspects of stem cell niche including cell-cell interaction, cell-extracellular matrix interaction, a large number of soluble signaling factors and various biochemical and biophysical cues (such as oxygen tension, flow, and shear and pore size). Stem cells have the potential to be a powerful tool in regenerative medicine due to their self-renewal property and immense differentiation potential. Recent progresses in in vitro culture conditions of embryonic stem cells, adult stem cells and induced pluripotent stem cells have enabled the researchers to investigate and understand the role of the microenvironment in stem cell properties. The engineered artificial stem cell niche has led to a better execution of stem cells in regenerative medicine. Here we elucidate the key components of stem cell niche and their role in niche engineering and stem cell therapeutics.
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Affiliation(s)
- Anshuman Singh
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - C B Yadav
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - N Tabassum
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - A K Bajpeyee
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - V Verma
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India.
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Ganesan V, Ryckman J, Verma V, Zhang C. National Practice Patterns of Proton versus Photon Therapy in the Treatment of Adult Patients with Primary Brain Tumors. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.759] [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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Sleightholm R, Baine M, Clymer B, Verma V, Lin C. Patient Outcomes Following SBRT Versus IR-based Procedures for Early Stage NSCLC. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Polamraju P, Haque W, Verma V, Wiederhold L, Hatch S, Butler E, Teh B. Management for Pathologic N1-N2 Disease after Definitive Surgery for Clinical T1-2 N0 Rectal Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.229] [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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Hsiao K, Haque W, Verma V, Hatch S, Chang J, Butler E, Teh B. Can Radiation Therapy Be Omitted after Breast Conserving Surgery with or Without Chemotherapy for Older Women (> 70 years old) with Early Stage Triple-Negative Breast Cancer? Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.162] [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: 11/27/2022]
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Cushman T, Verma V, Levy J, Simone C, Mishra M. Stereotactic Body Radiation Therapy for Prostate Cancer: Systematic Review and Meta-Analysis. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.393] [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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Kann B, Miccio J, Stahl J, Verma V, Dosoretz A, Park H, Shafman T, Gross C, Yu J, Decker R. Systemic Therapy with Stereotactic Body Radiation Therapy (SBRT) for Early-Stage Non-Small Cell Lung Carcinoma (NSCLC): A Multi-institutional Analysis. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.119] [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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Lin C, Verma V, Ly Q, Schwarz J, Meza J, Sasson A, Are C, Kos B, Grem J. Phase I Trial of Concurrent Stereotactic Body Radiation Therapy and Nelfinavir for Locally Advanced Borderline or Unresectable Pancreatic Cancer-Final Results. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Andrews PJD, Verma V, Healy M, Lavinio A, Curtis C, Reddy U, Andrzejowski J, Foulkes A, Canestrini S. Targeted temperature management in patients with intracerebral haemorrhage, subarachnoid haemorrhage, or acute ischaemic stroke: consensus recommendations. Br J Anaesth 2018; 121:768-775. [PMID: 30236239 DOI: 10.1016/j.bja.2018.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 02/07/2018] [Revised: 05/30/2018] [Accepted: 07/02/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND A modified Delphi approach was used to identify a consensus on practical recommendations for the use of non-pharmacological targeted temperature management in patients with intracerebral haemorrhage, subarachnoid haemorrhage, or acute ischaemic stroke with non-infectious fever (assumed neurogenic fever). METHODS Nine experts in the management of neurogenic fever participated in the process, involving the completion of online questionnaires, face-to-face discussions, and summary reviews, to consolidate a consensus on targeted temperature management. RESULTS The panel's recommendations are based on a balance of existing evidence and practical considerations. With this in mind, they highlight the importance of managing neurogenic fever using a single protocol for targeted temperature management. Targeted temperature management should be initiated if the patient temperature increases above 37.5°C, once an appropriate workup for infection has been undertaken. This helps prevent prophylactic targeted temperature management use and ensures infection is addressed appropriately. When neurogenic fever is detected, targeted temperature management should be initiated rapidly if antipyretic agents fail to control the temperature within 1 h, and should then be maintained for as long as there is potential for secondary brain damage. The recommended target temperature for targeted temperature management is 36.5-37.5°C. The use of advanced targeted temperature management methods that enable continuous, or near continuous, temperature measurement and precise temperature control is recommended. CONCLUSIONS Given the limited heterogeneous evidence currently available on targeted temperature management use in patients with neurogenic fever and intracerebral haemorrhage, subarachnoid haemorrhage, or acute ischaemic stroke, a Delphi approach was appropriate to gather an expert consensus. To aid in the development of future investigations, the panel provides recommendations for data gathering.
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Affiliation(s)
- P J D Andrews
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
| | - V Verma
- Royal London Hospital, London, UK
| | - M Healy
- Royal London Hospital, London, UK
| | - A Lavinio
- Neurosciences and Trauma Critical Care Unit, Addenbrooke's Hospital, Cambridge, UK
| | - C Curtis
- University College London Hospital, London, UK
| | - U Reddy
- National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London, UK
| | - J Andrzejowski
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - A Foulkes
- The Walton Centre for Neurology and Neurosurgery, Liverpool, UK
| | - S Canestrini
- King's College Hospital NHS Foundation Trust, London, UK
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Adeberg S, Harrabi S, Bougatf N, Verma V, Bernhardt D, Combs S, Haberer T, Herfarth K, Debus J, Rieken S. EP-1219: Dosimetric Comparison of Proton RT with Standard of Care Photon RT Techniques in CNS Tumors. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31529-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Han G, Feng J, Peng M, Verma V, Bi J, Song Q. EGFR Overexpression and Mutations Lead to a Change in Biological Characteristics of Human Lung Adenocarcinoma Cells. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2031] [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: 11/17/2022]
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Francis R, Estlin T, Doran G, Johnstone S, Gaines D, Verma V, Burl M, Frydenvang J, Montaño S, Wiens RC, Schaffer S, Gasnault O, DeFlores L, Blaney D, Bornstein B. AEGIS autonomous targeting for ChemCam on Mars Science Laboratory: Deployment and results of initial science team use. Sci Robot 2017; 2:2/7/eaan4582. [PMID: 33157897 DOI: 10.1126/scirobotics.aan4582] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 05/31/2017] [Indexed: 11/02/2022]
Abstract
Limitations on interplanetary communications create operations latencies and slow progress in planetary surface missions, with particular challenges to narrow-field-of-view science instruments requiring precise targeting. The AEGIS (Autonomous Exploration for Gathering Increased Science) autonomous targeting system has been in routine use on NASA's Curiosity Mars rover since May 2016, selecting targets for the ChemCam remote geochemical spectrometer instrument. AEGIS operates in two modes; in autonomous target selection, it identifies geological targets in images from the rover's navigation cameras, choosing for itself targets that match the parameters specified by mission scientists the most, and immediately measures them with ChemCam, without Earth in the loop. In autonomous pointing refinement, the system corrects small pointing errors on the order of a few milliradians in observations targeted by operators on Earth, allowing very small features to be observed reliably on the first attempt. AEGIS consistently recognizes and selects the geological materials requested of it, parsing and interpreting geological scenes in tens to hundreds of seconds with very limited computing resources. Performance in autonomously selecting the most desired target material over the last 2.5 kilometers of driving into previously unexplored terrain exceeds 93% (where ~24% is expected without intelligent targeting), and all observations resulted in a successful geochemical observation. The system has substantially reduced lost time on the mission and markedly increased the pace of data collection with ChemCam. AEGIS autonomy has rapidly been adopted as an exploration tool by the mission scientists and has influenced their strategy for exploring the rover's environment.
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Affiliation(s)
- R Francis
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
| | - T Estlin
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - G Doran
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - S Johnstone
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - D Gaines
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - V Verma
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - M Burl
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | | | - S Montaño
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - R C Wiens
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | | | - O Gasnault
- Institut de Recherche en Astrophysique et Planétologie, Toulouse, France
| | - L DeFlores
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - D Blaney
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - B Bornstein
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
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Bharati J, Dangi SS, Chouhan VS, Mishra SR, Bharti MK, Verma V, Shankar O, Yadav VP, Das K, Paul A, Bag S, Maurya VP, Singh G, Kumar P, Sarkar M. Expression dynamics of HSP70 during chronic heat stress in Tharparkar cattle. Int J Biometeorol 2017; 61:1017-1027. [PMID: 27995321 DOI: 10.1007/s00484-016-1281-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 10/14/2016] [Accepted: 11/22/2016] [Indexed: 06/06/2023]
Abstract
Six male Tharparkar cattle aged 2-3 years were selected for the study. The animals were acclimatized in the psychrometric chamber at thermoneutral zone (TNZ) for 15 days and then exposed to 42 °C temperature up to 23 days followed by 12 days of recovery period. Physiological responses were estimated, and peripheral blood mononuclear cells (PBMCs) were isolated at TNZ on day 1, day 5, and day 12; after 6 h of heat stress exposure on day 16 to day 20, day 25, day 30, day 32, day 34, day 36, and day 38; and a recovery period on day 45 and day 50. The PBMCs were cultured to study the effect of thermal challenge on HSP70 messenger RNA (mRNA) expression pattern at different temperature-time combinations. The mRNA and protein expression of HSP70 in PBMCs along with serum extracellular HSP70 (eHSP70) was increased (P < 0.05) and showed two peaks on day 17 and day 32 (2nd and 17th days of thermal challenge, respectively). The HSP70 mRNA expression was increased (P < 0.05) in a temperature- and time-dependent manner in heat stress challenge treatment as compared to control in cultured PBMCs. HSP70 expression was found to be higher (P < 0.05) after 10 days of heat exposure (corresponds to chronic heat stress) as compared to the first 5 days of heat stress (corresponds to short-term heat stress) and control period at TNZ. The present findings indicate that HSP70 is possibly involved in heat stress adaptive response in Tharparkar cattle and the biphasic expression pattern may be providing a second window of protection during chronic heat stress.
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Affiliation(s)
- Jaya Bharati
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - S S Dangi
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - V S Chouhan
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - S R Mishra
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - M K Bharti
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - V Verma
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - O Shankar
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - V P Yadav
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - K Das
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - A Paul
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - S Bag
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - V P Maurya
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - G Singh
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - P Kumar
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India
| | - M Sarkar
- Physiology and Climatology, Indian Veterinary Research Institute, Izzatnagar, Bareilly, UP, 243122, India.
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Post C, Verma V, Zhen W, Simone C. Stereotactic Body Radiation Therapy for ≥5 cm Non–Small Cell Lung Cancer: Survey of United States Academic Thoracic Radiation Oncologists. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.01.147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Bharati J, Dangi S, Mishra S, Chouhan V, Verma V, Shankar O, Bharti M, Paul A, Mahato DK, Rajesh G, Singh G, Maurya V, Bag S, Kumar P, Sarkar M. Expression analysis of Toll like receptors and interleukins in Tharparkar cattle during acclimation to heat stress exposure. J Therm Biol 2017; 65:48-56. [DOI: 10.1016/j.jtherbio.2017.02.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/23/2017] [Accepted: 02/04/2017] [Indexed: 12/21/2022]
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