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Dutta AK, Santra S, Harutyunyan A, Das B, Lisieski MJ, Xu L, Antonio T, Reith MEA, Perrine SA. Corrigendum to "D-578, an orally active triple monoamine reuptake inhibitor, displays antidepressant and anti-PTSD like effects in rats" [Eur. J. Pharmacol. 862 (2019) 172632]. Eur J Pharmacol 2022; 933:175286. [PMID: 36167739 PMCID: PMC9815472 DOI: 10.1016/j.ejphar.2022.175286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Aloke K Dutta
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA.
| | - Soumava Santra
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Arman Harutyunyan
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
| | - Banibrata Das
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Michael J Lisieski
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
| | - Liping Xu
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Tamara Antonio
- New York University, Department of Psychiatry, New York, NY, 10016, USA
| | - Maarten E A Reith
- New York University, Department of Psychiatry, New York, NY, 10016, USA
| | - Shane A Perrine
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
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Dutta AK, Santra S, Harutyunyan A, Das B, Lisieski MJ, Xu L, Antonio T, Reith MEA, Perrine SA. Corrigendum to "D-578, an orally active triple monoamine reuptake inhibitor, displays antidepressant and anti-PTSD like effects in rats" [Eur. J. Pharmacol. 862 (2019) 172632-172640]. Eur J Pharmacol 2022; 931:175232. [PMID: 36038378 PMCID: PMC9815471 DOI: 10.1016/j.ejphar.2022.175232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Aloke K Dutta
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA.
| | - Soumava Santra
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Arman Harutyunyan
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
| | - Banibrata Das
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Michael J Lisieski
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
| | - Liping Xu
- Wayne State University, Department of Pharmaceutical Sciences, Detroit, MI, 48202, USA
| | - Tamara Antonio
- New York University, Department of Psychiatry, New York, NY, 10016, USA
| | - Maarten E A Reith
- New York University, Department of Psychiatry, New York, NY, 10016, USA
| | - Shane A Perrine
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, USA
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Slepukhin PA, Krinochkin AP, Starnovskaya ES, Shtaitz YK, Savchuk MI, Kopchuk DS, Egorov IN, Santra S, Zyryanov GV, Chupakhin ON. Single-crystal X-ray diffraction analysis of arylamine-containing 2,2′-bipyridine derivatives. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3561-8] [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: 10/15/2022]
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4
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Strayer-Scherer A, Timilsina S, Liao YY, Young M, Rosskopf EN, Vallad GE, Goss EM, Santra S, Jones JB, Hong JC, Paret ML. Simulated Leaching of Foliar Applied Copper Bactericides on the Soil Microbiome Utilizing Various Beta Diversity Resemblance Measurements. Microbiol Spectr 2022; 10:e0148121. [PMID: 35536029 PMCID: PMC9241806 DOI: 10.1128/spectrum.01481-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/04/2022] [Indexed: 11/20/2022] Open
Abstract
Copper bactericides are routinely used to control Xanthomonas perforans (XP), causal agent of bacterial spot of tomato. Given the widespread tolerance to copper in XP strains in FL, USA, nanotechnology-based elemental composites have gained interest for their potential applications in agriculture in part due to their enhanced antimicrobial properties and toxicity to copper-tolerant strains. However, little is known about the potential impact of conventional copper bactericides as well as nano-based elemental composites on soil microbial communities, as determined by high-throughput sequencing of the 16S rDNA. We compared the effects of 2 and 200 μg/mL of core-shell (CS), a metallic copper composite, and a conventional copper bactericide + mancozeb (Cu+Man) on the soil microbiome. These treatments were compared to three controls, the microbial profile of the soil prior to application of copper products, a water application, and spiking the soil with a soilborne phytobacterium, Ralstonia solanacearum (RS). The RS treatment was included to determine if downstream analysis could detect the artificial inoculation. Utilizing multiple β diversity measurements, each emphasizing various tenets of ecology, provided a greater perspective of the effects the treatments had on the microbiome. Analysis of HTS data revealed that the two treatments containing field applied rates of metallic copper, CS 200 and Cu+Man, had the largest impact on the soil microbiome at seven-days posttreatment compared to water. However, we simulated field applied rates of CS 200 entering the soil by treating soil with CS 2 and determined this concentration had a negligible effect on the soil microbiome. IMPORTANCE Nanotechnology-based elemental composites have gained popularity for their potential applications in plant disease management due to their enhanced antimicrobial properties. However, little is known about their potential impact on the environment. Foliar applications of nano metallic composites upon leaching into the soil have the potential to impact soil microbial populations that in turn influence soil health. Utilizing multiple β diversity measurements, high-throughput sequencing analysis revealed that field applied rates of metallic copper (200 μg/mL) from an advanced copper composite (core-shell [CS]) and a conventional copper bactericide in combination with mancozeb had the largest impact on the soil microbiome compared to water and nontreated control. To simulate leaching from the leaf surface, a lower concentration (2 μg/mL) of CS was also applied to the soil and had a negligible effect on the soil microbiome. Thus, field applied rates of CS may have a minimal effect on soil microbial communities.
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Affiliation(s)
- A. Strayer-Scherer
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
- Department of Entomology and Plant Pathology, Auburn University, Auburn, Alabama, USA
| | - S. Timilsina
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - Y. Y. Liao
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - M. Young
- NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando, Florida, USA
| | - E. N. Rosskopf
- USDA ARS, United States Horticultural Research Laboratory, Fort Pierce, Florida, USA
| | - G. E. Vallad
- Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida, USA
| | - E. M. Goss
- Department of Plant Pathology and Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA
| | - S. Santra
- NanoScience Technology Center, Department of Chemistry, Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, Florida, USA
| | - J. B. Jones
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA
| | - J. C. Hong
- USDA ARS, United States Horticultural Research Laboratory, Fort Pierce, Florida, USA
| | - M. L. Paret
- Department of Plant Pathology, North Florida Research and Education Center, University of Florida, Quincy, Florida, USA
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Ghodke S, V S, Singh Y, Santra S. Efficiency calculation of proton recoil neutron telescope with relativistic correction for neutron energy 4 to 20 MeV. Appl Radiat Isot 2022; 184:110171. [DOI: 10.1016/j.apradiso.2022.110171] [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] [Received: 08/06/2021] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 11/02/2022]
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Abstract
:
One of the most prominent aromatic organic chemical compound is Coumarin having formula C9H6O2 which
is widely known for its benefits in drug industry. Colourless crystalline solid having sweet scent is coumarin’s physical
identity. It serves various purposes such as in synthesis of medicines, laser dyes, perfumes and many more. Having enormous
usages it becomes important to synthesize such compound so various reactions were performed in order to obtain coumarins.
This review explicates the preparation of coumarin by Pechmann Condensation and its biological characteristics.
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Affiliation(s)
- Diksha Chaudhary
- Department of Chemistry, School of Chemical Engineering and Physical Science, Faculty of Technology and Sciences,
Lovely Professional University, Phagwara, P.O.Box 144411, India
| | - Pooja Bedi
- Department of Chemistry, School of Chemical Engineering and Physical Science, Faculty of Technology and Sciences,
Lovely Professional University, Phagwara, P.O.Box 144411, India
| | - Soumava Santra
- Department of Chemistry, School of Chemical Engineering and Physical Science, Faculty of Technology and Sciences,
Lovely Professional University, Phagwara, P.O.Box 144411, India
| | - Tanay Pramanik
- Department of Chemistry, University of Engineering
and Management, University Area, Action Area III, B/5, Newtown, Kolkata-700160, India
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Santra S, Kethepalli J, Agarwal S, Dhar A, Kulkarni M, Kundu A. Gap Statistics for Confined Particles with Power-Law Interactions. Phys Rev Lett 2022; 128:170603. [PMID: 35570430 DOI: 10.1103/physrevlett.128.170603] [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] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/25/2022] [Indexed: 06/15/2023]
Abstract
We consider the N particle classical Riesz gas confined in a one-dimensional external harmonic potential with power-law interaction of the form 1/r^{k}, where r is the separation between particles. As special limits it contains several systems such as Dyson's log-gas (k→0^{+}), the Calogero-Moser model (k=2), the 1D one-component plasma (k=-1), and the hard-rod gas (k→∞). Despite its growing importance, only large-N field theory and average density profile are known for general k. In this Letter, we study the fluctuations in the system by looking at the statistics of the gap between successive particles. This quantity is analogous to the well-known level-spacing statistics which is ubiquitous in several branches of physics. We show that the variance goes as N^{-b_{k}} and we find the k dependence of b_{k} via direct Monte Carlo simulations. We provide supporting arguments based on microscopic Hessian calculation and a quadratic field theory approach. We compute the gap distribution and study its system size scaling. Except in the range -1<k<0, we find scaling for all k>-2 with both Gaussian and non-Gaussian scaling forms.
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Affiliation(s)
- S Santra
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - J Kethepalli
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - S Agarwal
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - A Dhar
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - M Kulkarni
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - A Kundu
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
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Kaur S, Santra S. Application of Guar Gum and its Derivatives as Green Binder/Separator for Advanced Lithium-Ion Batteries. ChemistryOpen 2022; 11:e202100209. [PMID: 35103411 PMCID: PMC8805390 DOI: 10.1002/open.202100209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/12/2021] [Indexed: 12/21/2022] Open
Abstract
Since their first commercialization in the 1990s,lithium-ion batteries (LIBs) have become an indispensible part of our everyday life in particular for portable electronic devices. LIBs have been considered as the most promising sustainable high energy density storage device. In recent years, there is a strong demand of LIBs for hybrid electric and electric vehicles to lower carbon footprint and mitigate climate change. However, LIBs have several issues, for example, high cost and safety issues such as over discharge, intolerance to overcharge, high temperature operation etc. To address these issues several new types of electrodes are being studied. Traditional binder PVDF is costly, difficult to recyle, undergoes side reactions at high temperature and cannot stabilize high energy density electrodes. To overcome these challenges, diiferent binders have been introduced with these electrodes. This minireview is focused on the application of guar gum as a binder for different electrodes and separator. The electrochemical performance of electrodes with guar gum has been compared with other binders.
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Affiliation(s)
- Simran Kaur
- Department of ChemistryLovely Professional UniversityPhagwaraPunjab144411India
| | - Soumava Santra
- Department of ChemistryLovely Professional UniversityPhagwaraPunjab144411India
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Kaur S, Santra S. Recent Progress in Chemical Modification of the Natural Polysaccharide Guar Gum. Curr Org Synth 2021; 19:197-219. [PMID: 34751122 DOI: 10.2174/1570179418666211109105416] [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] [Received: 06/23/2021] [Revised: 08/17/2021] [Accepted: 09/01/2021] [Indexed: 11/22/2022]
Abstract
Guar gum (GG) is a natural heteropolysaccharide. Due to its non-toxic, eco-friendly, and biodegradable nature, GG has found wide applications in many areas, in particular food, paper, textile, petroleum, and pharmaceutical industries. Therefore, GG is often called "Black Gold" as well. Due to the presence of hydroxyl groups, GG can be modified by various methods. The physical and biological properties of GG can be modulated by chemical modifications. In this manuscript, various methods for the chemical modifications of GG have been discussed according to the type of modifications. Mechanistic insights have also been provided whenever possible. In addition, potential applications of new GG derivatives have also been briefly mentioned.
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Affiliation(s)
- Simran Kaur
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab-144411. India
| | - Soumava Santra
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab-144411. India
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10
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Santra S, Kortagere S, Vedachalam S, Gogoi S, Antonio T, Reith ME, Dutta AK. Novel Potent Dopamine-Norepinephrine and Triple Reuptake Uptake Inhibitors Based on Asymmetric Pyran Template and Their Molecular Interactions with Monoamine Transporters. ACS Chem Neurosci 2021; 12:1406-1418. [PMID: 33844493 DOI: 10.1021/acschemneuro.1c00078] [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: 11/29/2022] Open
Abstract
We have carried out a structural exploration of (2S,4R,5R)-2-(bis(4-fluorophenyl)methyl)-5-((4-methoxybenzyl)amino)tetrahydro-2H-pyran-4-ol (D-473) to investigate the influence of various functional groups on its aromatic ring, the introduction of heterocyclic aromatic rings, and the alteration of the stereochemistry of functional group on the pyran ring. The novel compounds were tested for their affinities for the dopamine transporter (DAT), serotonin transporter (SERT), and norepinephrine transporter (NET) in the brain by measuring their potency in inhibiting monoamine neurotransmitter uptake. Our studies identified some of the most potent dopamine-norepinephrine reuptake inhibitors known to-date like D-528 and D-529. The studies also led to development of potent triple reuptake inhibitors such as compounds D-544 and D-595. A significant influence from the alteration of the stereochemistry of the hydroxyl group on the pyran ring of D-473 on transporters affinities was observed indicating stereospecific preference for interaction. The inhibitory profiles and structure-activity relationship of lead compounds were further corroborated by molecular docking studies at the primary binding sites of monoamine transporters. The nature of interactions found computationally correlated well with their affinities for the transporters.
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Affiliation(s)
- Soumava Santra
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, Michigan 48202, United States
| | - Sandhya Kortagere
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania 19129, United States
| | - Seenuvasan Vedachalam
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, Michigan 48202, United States
| | - Sanjib Gogoi
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, Michigan 48202, United States
| | - Tamara Antonio
- Department of Psychiatry, New York University School of Medicine, New York, New York 10016, United States
| | - Maarten E.A. Reith
- Department of Psychiatry, New York University School of Medicine, New York, New York 10016, United States
| | - Aloke K. Dutta
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, Michigan 48202, United States
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11
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Moseev TD, Khasanov AF, Varaksin MV, Kopchuk DS, Kovalev IS, Taniya OS, Rahman M, Santra S, Zyryanov GV, Chupakhin ON, Charushin VN. Synthesis of meso-2,2’-bipyridyl-substituted calix[4]arenes and their response to metal cations. Chim Tech Acta 2020. [DOI: 10.15826/chimtech.2020.7.4.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A convenient synthetic approach to meso-substituted with 2,2’-bipyridine and 1-(pyridin-2-yl)isoquinoline residues calix[4]arenes is reported. This approach involves the reaction of generated in situ 2-lithio-calix[4]arene with 1,2,4-triazine precursor with the following aromatization of the obtained adduct, and the aza-Diels-Alder reaction of the 1,2,4-triazinyl-substituted calix[4]arene with 2,5-norbornadien or in-situ generated 1,2-dehydrobenzene. The UV/fluorescence response of thus obtained meso-pyridyl-substituted calix[4]arenes to metal cations is studied.
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12
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Abstract
Thiocoumarins and dithiocoumarins are two important classes of sulphurcontaining
heterocyclic compounds, which are bioisosteres of coumarins. Herein, various
synthetic strategies for these two classes of heterocyclic compounds reported in the literature
have been discussed. Different solvents, catalysts, reagents and reaction conditions,
which were employed successfully for synthesizing thiocoumarins and dithiocoumarins
have also been described concisely in this review. Mechanistic overview has been given
wherever it was necessary. In addition, a comparative view of various solvents, catalysts
and reagents focusing on their efficiency for synthesizing thiocoumarins and dithiocoumarins,
has been discussed as well. Furthermore, pharmacological activities of these two
classes of compounds have also been discussed.
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Affiliation(s)
- Diksha Chaudhary
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Tanay Pramanik
- Department of Chemistry, University of Engineering and Management, University Area, Action Area III, B/5, Newtown, Kolkata, West Bengal - 700160, India
| | - Soumava Santra
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India
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13
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Ghodke S, Sathian V, Singh Y, Patel T, Santra S. ABSOLUTE MEASUREMENT OF 14.57 MeV NEUTRON FLUENCE RATE USING PROTON RECOIL NEUTRON TELESCOPE. Radiat Prot Dosimetry 2020; 190:307-319. [PMID: 32779698 DOI: 10.1093/rpd/ncaa103] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 05/27/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
A single stage vacuum-type proton recoil neutron telescope (PRT) was used for accurate measurement of 14.57 MeV neutron fluence rate from an indigenously developed D-T neutron generator at Purnima, BARC. The telescope consists of a polyethylene radiator having 4 cm diameter and CsI (Tl) scintillation crystal having thickness 1.5 mm and 4 cm diameter separated by 20.5 cm kept in a vacuum chamber. The neutron detection efficiency of the telescope for 14.57 MeV neutrons was calculated analytically using n-p scattering cross section data from Evaluated Nuclear Data File VII and also evaluated using fluka simulation. The relativistic transformation of n-p differential scattering cross section from centre-of-mass to laboratory system was used for calculating the efficiency of PRT. The 14.57 MeV neutron fluence rate was also measured using copper foils. The comparison of fluence rate measured using PRT and copper foil activation techniques is presented in this paper. The total uncertainty in measurement using PRT and copper foil activation technique is found to be 3.93 and 6.97%, respectively.
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Affiliation(s)
- Shobha Ghodke
- Radiation Safety Systems Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - V Sathian
- Radiation Safety Systems Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Yashoda Singh
- Radiation Safety Systems Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Tarun Patel
- Technical Physics Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - S Santra
- Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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14
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Savchuk MI, Starnovskaya ES, Shtaitz YK, Krinochkin AP, Kopchuk DS, Santra S, Rahman M, Zyryanov GV, Rusinov VL, Chupakhin ON. Direct synthesis of 5-arylethynyl-1,2,4-triazines via direct CH-functionalization. Chim Tech Acta 2020. [DOI: 10.15826/chimtech.2020.7.3.02] [Citation(s) in RCA: 1] [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: 11/19/2022] Open
Abstract
An efficient synthetic approach towards 5-arylethynyl-1,2,4-triazines via direct C-H-functionalization of 5-H-1,2,4-triazines in reaction with lithium acetylenes is reported.
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15
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Affiliation(s)
- Soumava Santra
- Department of ChemistryLovelyProfessional University NH-41, Phagwara Punjab 144411 India
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16
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Shtaitz YK, Savchuk MI, Kopchuk DS, Taniya OS, Santra S, Zyryanov GV, Suvorova AI, Rusinov VL, Chupakhin ON. Efficient Synthesis of Methyl
6-(6-Aryl-1,2,4-triazin3-yl)pyridine-2-carboxylates. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020030306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Broomfield A, Davison J, Roberts J, Stewart C, Hensman P, Beesley C, Tylee K, Rust S, Schwahn B, Jameson E, Vijay S, Santra S, Sreekantam S, Ramaswami U, Chakrapani A, Raiman J, Cleary MA, Jones SA. Ten years of enzyme replacement therapy in paediatric onset mucopolysaccharidosis II in England. Mol Genet Metab 2020; 129:98-105. [PMID: 31383595 DOI: 10.1016/j.ymgme.2019.07.016] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/26/2019] [Accepted: 07/26/2019] [Indexed: 11/23/2022]
Abstract
The outcome of 110 patients with paediatric onset mucopolysaccharidosis II (MPS II) since the commercial introduction of enzyme replacement therapy (ERT) in England in 2007 is reported. Median length of follow up was 10 years 3 months (range = 1 y 2 m to 18 years 6 month). 78 patients were treated with ERT, 18 had no ERT or disease modifying treatment 7 had haematopoietic stem cell transplant, 4 experimental intrathecal therapy and 3 were lost to follow up. There is clear evidence of improved survival (median age of death of ERT treated (n = 16) = 15.13 years (range = 9.53 to 20.58 y), and untreated (n = 17) = 11.43 y (0.5 to 19.13 y) p = .0005). Early introduction of ERT improved respiratory outcome at 16 years, the median FVC (% predicted) of those in whom ERT initiated <8 years = 69% (range = 34-86%) and 48% (25-108) (p = .045) in those started >8 years. However, ERT appears to have minimal impact on hearing, carpal tunnel syndrome or progression of cardiac valvular disease. Cardiac valvular disease occurred in 18/46 (40%), with progression occurring most frequently in the aortic valve 13/46 (28%). The lack of requirement for neurosurgical intervention in the first 8 years of life suggests that targeted imaging based on clinical symptomology would be safe in this age group after baseline assessments. There is also emerging evidence that the neurological phenotype is more nuanced than the previously recognized dichotomy of severe and attenuated phenotypes in patients presenting in early childhood.
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Affiliation(s)
- A Broomfield
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK.
| | - J Davison
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - J Roberts
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - C Stewart
- Department of Inherited Metabolic Disorders, Birmingham Women's and Children's Hospital Foundation Trust, Steelhouse Lane, Birmingham, UK
| | - P Hensman
- Department of Physiotherapy, Royal Manchester Children's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - C Beesley
- Regional Genetics Laboratories, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - K Tylee
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - S Rust
- Department of Psychology, Royal Manchester Children's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - B Schwahn
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - E Jameson
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - S Vijay
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - S Santra
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - S Sreekantam
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - U Ramaswami
- Lysosomal Disorders Unit, Institute of Immunity and Transplantation, Royal Free London NHS Foundation Trust, Pond Street, London NW32QG, UK
| | - A Chakrapani
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - J Raiman
- Department of Inherited Metabolic Disorders, Birmingham Women's and Children's Hospital Foundation Trust, Steelhouse Lane, Birmingham, UK
| | - M A Cleary
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - S A Jones
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation Trust, Manchester M13 9WL, UK
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18
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Affiliation(s)
- Soumava Santra
- Department of ChemistryLovelyProfessional University, NH-41, Phagwara Punjab 144411 India
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Dutta AK, Santra S, Harutyunyan A, Das B, Lisieski MJ, Xu L, Antonio T, Reith ME, Perrine SA. D-578, an orally active triple monoamine reuptake inhibitor, displays antidepressant and anti-PTSD like effects in rats. Eur J Pharmacol 2019; 862:172632. [DOI: 10.1016/j.ejphar.2019.172632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 08/05/2019] [Accepted: 08/27/2019] [Indexed: 12/28/2022]
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Daly A, Evans S, Chahal S, Santra S, Pinto A, Jackson R, Gingell C, Rocha J, Van Spronsen FJ, MacDonald A. Glycomacropeptide: long-term use and impact on blood phenylalanine, growth and nutritional status in children with PKU. Orphanet J Rare Dis 2019; 14:44. [PMID: 30770754 PMCID: PMC6377744 DOI: 10.1186/s13023-019-1011-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 01/28/2019] [Indexed: 11/24/2022] Open
Abstract
Abstract In phenylketonuria, casein glycomacropeptide (CGMP) requires modification with the addition of some essential and semi essential amino acids to ensure suitability as a protein substitute. The optimal amount and ratio of additional amino acids is undefined. Aim A longitudinal, parallel, controlled study over 12 months evaluating a CGMP (CGMP-AA2) formulation compared with phenylalanine-free L-amino acid supplements (L-AA) on blood Phe, Tyr, Phe:Tyr ratio, biochemical nutritional status and growth in children with PKU. The CGMP-AA2 contained 36 mg Phe per 20 g protein equivalent. Methods Children with PKU, with a median age of 9.2 y (5-16y) were divided into 2 groups: 29 were given CGMP-AA2, 19 remained on Phe-free L-AA. The CGMP-AA2 formula gradually replaced L-AA, providing blood Phe concentrations were maintained within target range. Median blood Phe, Tyr, Phe:Tyr ratio and anthropometry, were compared within and between the two groups at baseline, 26 and 52 weeks. Nutritional biochemistry was studied at baseline and 26 weeks only. Results At the end of 52 weeks only 48% of subjects were able to completely use CGMP-AA2 as their single source of protein substitute. At 52 weeks CGMP-AA2 provided a median of 75% (30–100) of the total protein substitute with the remainder being given as L-AA. Within the CGMP-AA2 group, blood Phe increased significantly between baseline and 52 weeks: [baseline to 26 weeks; baseline Phe 270 μmol/L (170–430); 26 weeks, Phe 300 μmol/L (125–485) p = 0.06; baseline to 52 weeks: baseline, Phe 270 μmol/L (170–430), 52 weeks Phe 300 μmol/L (200–490), p < 0.001)]. However, there were no differences between the CGMP-AA2 and L-AA group for Phe, Tyr, Phe:Tyr ratio or anthropometry at any of the three measured time points. Within the CGMP-AA2 group only weight (p = 0.0001) and BMI z scores (p = 0.0001) increased significantly between baseline to 52 weeks. Whole blood and plasma selenium were significantly higher (whole blood selenium [p = 0.0002]; plasma selenium [p = 0.0007]) at 26 weeks in the CGMP-AA2 group compared L-AA. No differences were observed within the L-AA group for any of the nutritional markers. Conclusions CGMP-AA increases blood Phe concentrations and so it can only be used partly to contribute to protein substitute in some children with PKU. CGMP-AA should be carefully introduced in children with PKU and close monitoring of blood Phe control is essential. Electronic supplementary material The online version of this article (10.1186/s13023-019-1011-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- A Daly
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK.
| | - S Evans
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK
| | - S Chahal
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK
| | - S Santra
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK
| | - A Pinto
- University of Liverpool, Brownlow Street, Liverpool, L69 3GL, UK
| | - R Jackson
- Nottingham Queen's Medical Centre, University Hospital, Derby Road, Nottingham, NG7 2UH, UK
| | - C Gingell
- Centro de Genética Médica JM, CHP EPE, Porto, Portugal.,Centro de Referência na área das Doenças Hereditárias do Metabolismo, Centro Hospitalar do Porto - CHP EPE, Porto, Portugal.,Faculdade de Ciências da Saúde, UFP, Porto, Portugal.,Center for Health Technology and Services Research (CINTESIS), Porto, Portugal
| | - J Rocha
- Beatrix Children's Hospital, University Medical Centre of Groningen, University of Groningen, Groningen, The Netherlands
| | - F J Van Spronsen
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK
| | - A MacDonald
- Dietetic Department, Birmingham Childrens Hospital, Steelhouse Lane, Birmingham, B4 6 NH, UK
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Sarsour M, Amadio J, Anderson E, Barrón-Palos L, Crawford B, Crawford C, Esposito D, Fox W, Francis I, Fry J, Gardiner H, Haddock C, Holly A, Hoogerheide S, Korsak K, Lieers J, Magers S, Maldonado-Velázquez M, Mayorov D, Mumm H, Nico J, Okudaira T, Paudel C, Santra S, Shimizu H, Snow W, Sprow A, Steen K, Swanson H, Tôvesson F, Vanderwerp J, Yergeau P. Neutron spin rotation measurements. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201921906002] [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: 11/14/2022] Open
Abstract
The neutron spin rotation (NSR) collaboration used parity-violating spin rotation of transversely polarized neutrons transmitted through a 0.5 m liquid helium target to constrain weak coupling constants between nucleons. While consistent with theoretical expectation, the upper limit set by this measurement on the rotation angle is limited by statistical uncertainties. The NSR collaboration is preparing a new measurement to improve this statistically-limited result by about an order of magnitude. In addition to using the new high-flux NG-C beam at the NIST Center for Neutron Research, the apparatus was upgraded to take advantage of the larger-area and more divergent NG-C beam. Significant improvements are also being made to the cryogenic design. Details of these improvements and readiness of the upgraded apparatus are presented. We also comment on how recent theoretical work combining effective field theory techniques with the 1/Nc expansion of QCD along with previous NN weak measurements can be used to make a prediction for dϕ/dz in 4He.
An experiment using the same apparatus with a room-temperature target was carried out at LANSCE to place limits on parity-conserving rotations from possible fifth-force interactions to complement previous studies. We sought this interaction using a slow neutron polarimeter that passed transversely polarized slow neutrons by unpolarized slabs of material arranged so that this interaction would tilt the plane of polarization and develop a component along the neutron momentum. The results of this measurement and its impact on the neutron-matter coupling gA2 from such an interaction are presented. The NSR collaboration is also preparing a new measurement that uses an upgraded version of the room-temperature target to be run on the NG-C beamline; and it is expected to constrain gA2 by at least two additional orders of magnitude for λc between 1 cm and 1 μm.
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Blyth D, Fry J, Fomin N, Alarcon R, Alonzi L, Askanazi E, Baeßler S, Balascuta S, Barrón-Palos L, Barzilov A, Bowman JD, Birge N, Calarco JR, Chupp TE, Cianciolo V, Coppola CE, Crawford CB, Craycraft K, Evans D, Fieseler C, Frlež E, Garishvili I, Gericke MTW, Gillis RC, Grammer KB, Greene GL, Hall J, Hamblen J, Hayes C, Iverson EB, Kabir ML, Kucuker S, Lauss B, Mahurin R, McCrea M, Maldonado-Velázquez M, Masuda Y, Mei J, Milburn R, Mueller PE, Musgrave M, Nann H, Novikov I, Parsons D, Penttilä SI, Počanić D, Ramirez-Morales A, Root M, Salas-Bacci A, Santra S, Schröder S, Scott E, Seo PN, Sharapov EI, Simmons F, Snow WM, Sprow A, Stewart J, Tang E, Tang Z, Tong X, Turkoglu DJ, Whitehead R, Wilburn WS. First Observation of P-odd γ Asymmetry in Polarized Neutron Capture on Hydrogen. Phys Rev Lett 2018; 121:242002. [PMID: 30608729 DOI: 10.1103/physrevlett.121.242002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 10/22/2018] [Indexed: 06/09/2023]
Abstract
We report the first observation of the parity-violating gamma-ray asymmetry A_{γ}^{np} in neutron-proton capture using polarized cold neutrons incident on a liquid parahydrogen target at the Spallation Neutron Source at Oak Ridge National Laboratory. A_{γ}^{np} isolates the ΔI=1, ^{3}S_{1}→^{3}P_{1} component of the weak nucleon-nucleon interaction, which is dominated by pion exchange and can be directly related to a single coupling constant in either the DDH meson exchange model or pionless effective field theory. We measured A_{γ}^{np}=[-3.0±1.4(stat)±0.2(syst)]×10^{-8}, which implies a DDH weak πNN coupling of h_{π}^{1}=[2.6±1.2(stat)±0.2(syst)]×10^{-7} and a pionless EFT constant of C^{^{3}S_{1}→^{3}P_{1}}/C_{0}=[-7.4±3.5(stat)±0.5(syst)]×10^{-11} MeV^{-1}. We describe the experiment, data analysis, systematic uncertainties, and implications of the result.
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Affiliation(s)
- D Blyth
- Arizona State University, Tempe, Arizona 85287, USA
- High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J Fry
- University of Virginia, Charlottesville, Virginia 22904, USA
- Indiana University, Bloomington, Indiana 47405, USA
| | - N Fomin
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R Alarcon
- Arizona State University, Tempe, Arizona 85287, USA
| | - L Alonzi
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Askanazi
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - S Baeßler
- University of Virginia, Charlottesville, Virginia 22904, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Balascuta
- Arizona State University, Tempe, Arizona 85287, USA
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele 077125, Romania
| | - L Barrón-Palos
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000, Mexico
| | - A Barzilov
- University of Nevada, Las Vegas, Nevada 89154, USA
| | - J D Bowman
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - N Birge
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - J R Calarco
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - T E Chupp
- University of Michigan, Ann Arbor, Michigan 48109, USA
| | - V Cianciolo
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - C E Coppola
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - C B Crawford
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - K Craycraft
- University of Tennessee, Knoxville, Tennessee 37996, USA
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - D Evans
- University of Virginia, Charlottesville, Virginia 22904, USA
- Indiana University, Bloomington, Indiana 47405, USA
| | - C Fieseler
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - E Frlež
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - I Garishvili
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M T W Gericke
- University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
| | - R C Gillis
- Indiana University, Bloomington, Indiana 47405, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - K B Grammer
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - G L Greene
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J Hall
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - J Hamblen
- University of Tennessee, Chattanooga, Tennessee 37403 USA
| | - C Hayes
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Physics Department, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - E B Iverson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M L Kabir
- University of Kentucky, Lexington, Kentucky 40506, USA
- Mississippi State University, Mississippi State, Mississippi 39759, USA
| | - S Kucuker
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA
| | - B Lauss
- Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - R Mahurin
- Middle Tennessee State University, Murfreesboro, Tennessee 37132, USA
| | - M McCrea
- University of Kentucky, Lexington, Kentucky 40506, USA
- University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
| | - M Maldonado-Velázquez
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000, Mexico
| | - Y Masuda
- High Energy Accelerator Research Organization (KEK), Tukuba-shi, 305-0801, Japan
| | - J Mei
- Indiana University, Bloomington, Indiana 47405, USA
| | - R Milburn
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - P E Mueller
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M Musgrave
- University of Tennessee, Knoxville, Tennessee 37996, USA
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - H Nann
- Indiana University, Bloomington, Indiana 47405, USA
| | - I Novikov
- Western Kentucky University, Bowling Green, Kentucky 42101, USA
| | - D Parsons
- University of Tennessee, Chattanooga, Tennessee 37403 USA
| | - S I Penttilä
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D Počanić
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - A Ramirez-Morales
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000, Mexico
| | - M Root
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - A Salas-Bacci
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - S Santra
- Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - S Schröder
- University of Virginia, Charlottesville, Virginia 22904, USA
- Saarland University, Institute of Experimental Ophthalmology, Kirrberger Str. 100, Bldg. 22, 66424 Homburg/Saar, Germany
| | - E Scott
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - P-N Seo
- University of Virginia, Charlottesville, Virginia 22904, USA
- Triangle Universities Nuclear Lab, Durham, North Carolina 27708, USA
| | - E I Sharapov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - F Simmons
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - W M Snow
- Indiana University, Bloomington, Indiana 47405, USA
| | - A Sprow
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - J Stewart
- University of Tennessee, Chattanooga, Tennessee 37403 USA
| | - E Tang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - Z Tang
- Indiana University, Bloomington, Indiana 47405, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - X Tong
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D J Turkoglu
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - R Whitehead
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - W S Wilburn
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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Ebrahim M, Abd El-Sayed W, Abd El-Ghafar N, Paret M, Young M, Santra S, Jones J. CONTROL OF ANGULAR BACTERIAL LEAF SPOT DISEASE OF WATERMELON USING ADVANCED COPPER COMPOSITES. Arab Universities Journal of Agricultural Sciences 2018; 26:713-723. [DOI: 10.21608/ajs.2018.16003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Strayer-Scherer A, Liao YY, Young M, Ritchie L, Vallad GE, Santra S, Freeman JH, Clark D, Jones JB, Paret ML. Advanced Copper Composites Against Copper-Tolerant Xanthomonas perforans and Tomato Bacterial Spot. Phytopathology 2018; 108:196-205. [PMID: 28990482 DOI: 10.1094/phyto-06-17-0221-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Bacterial spot, caused by Xanthomonas spp., is a widespread and damaging bacterial disease of tomato (Solanum lycopersicum). For disease management, growers rely on copper bactericides, which are often ineffective due to the presence of copper-tolerant Xanthomonas strains. This study evaluated the antibacterial activity of the new copper composites core-shell copper (CS-Cu), multivalent copper (MV-Cu), and fixed quaternary ammonium copper (FQ-Cu) as potential alternatives to commercially available micron-sized copper bactericides for controlling copper-tolerant Xanthomonas perforans. In vitro, metallic copper from CS-Cu and FQ-Cu at 100 μg/ml killed the copper-tolerant X. perforans strain within 1 h of exposure. In contrast, none of the micron-sized copper rates (100 to 1,000 μg/ml) from Kocide 3000 significantly reduced copper-tolerant X. perforans populations after 48 h of exposure compared with the water control (P < 0.05). All copper-based treatments killed the copper-sensitive X. perforans strain within 1 h. Greenhouse studies demonstrated that all copper composites significantly reduced bacterial spot disease severity when compared with copper-mancozeb and water controls (P < 0.05). Although there was no significant impact on yield, copper composites significantly reduced disease severity when compared with water controls, using 80% less metallic copper in comparison with copper-mancozeb in field studies (P < 0.05). This study highlights the discovery that copper composites have the potential to manage copper-tolerant X. perforans and tomato bacterial spot.
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Affiliation(s)
- A Strayer-Scherer
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - Y Y Liao
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - M Young
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - L Ritchie
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - G E Vallad
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - S Santra
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - J H Freeman
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - D Clark
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - J B Jones
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
| | - M L Paret
- First, second, and ninth authors: Department of Plant Pathology, University of Florida, Gainesville 32611; third author: NanoScience Technology Center and Burnett School of Biomedical Science, University of Central Florida, Orlando 32826; fourth, seventh, and eighth authors: North Florida Research and Education Center, University of Florida, Quincy 32351; fifth author: Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma 33598; sixth author: NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando; and tenth author: Department of Plant Pathology and North Florida Research and Education Center, University of Florida, Quincy
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Daly A, Evans S, Ashmore C, Chahal S, Santra S, MacDonald A. Refining low protein modular feeds for children on low protein tube feeds with organic acidaemias. Mol Genet Metab Rep 2017; 13:99-104. [PMID: 29034175 PMCID: PMC5633752 DOI: 10.1016/j.ymgmr.2017.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/14/2017] [Accepted: 08/14/2017] [Indexed: 12/17/2022] Open
Abstract
Children with inherited metabolic disorders (IMD) who are dependent on tube feeding and require a protein restriction are commonly fed by ‘modular tube feeds’ consisting of several ingredients. A longitudinal, prospective two-phase study, conducted over 18 months assessed the long-term efficacy of a pre-measured protein-free composite feed. This was specifically designed to meet the non-protein nutritional requirements of children (aged over 1 year) with organic acidaemias on low protein enteral feeds and to be used as a supplement with an enteral feeding protein source. Methodology All non-protein individual feed ingredients were replaced with one protein-free composite feed supplying fat, carbohydrate, and micronutrients. Thirteen subjects, median age 7.4y (3–15.5y), all nutritionally tube dependent (supplying nutritional intake: ≥ 90%, n = 12; 75%, n = 1), and diagnosed with organic acidaemias (Propionic acidaemia, n = 6; Vitamin B12 non-responsive methyl malonic acidaemia, n = 4; Isovaleric acidaemia, n = 2; Glutaric aciduria type1, n = 1); were studied. Nutritional intake, biochemistry and anthropometry were monitored at week − 8, 0, 12, 26 and 79. Results Energy intake remained unchanged, providing 76% of estimated energy requirements. Dietary intakes of vitamins, minerals and essential fatty acids significantly increased from week 0 to week 79, but sodium, potassium, magnesium, decosahexanoic acid and fibre did not meet suggested requirements. Plasma zinc, selenium, haemoglobin and MCV significantly improved, and growth remained satisfactory. Natural protein intake met WHO/FAO/UNU 2007 recommendations. Conclusions A protein-free composite feed formulated to meet the non-protein nutritional requirements of children aged over 1 year improved nutritional intake, biochemical nutritional status, and simplified enteral tube feeding regimens in children with organic acidaemias.
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Affiliation(s)
- A Daly
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - S Evans
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - C Ashmore
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - S Chahal
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - S Santra
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - A MacDonald
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
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Santra S, Das NS, Besra N, Banerjee D, Chattopadhyay KK. Graphene-Anchored p-Type CuBO 2 Nanocrystals for a Transparent Cold Cathode. Langmuir 2017; 33:9961-9971. [PMID: 28837774 DOI: 10.1021/acs.langmuir.7b01650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
CuBO2 nanostructures were synthesized by employing a low-cost hydrothermal technique to combine into the CuBO2-RGO nanocomposite for the first time using chemically prepared graphene sheets. The nanohybrid samples were characterized for structural information using X-ray diffraction (XRD) that revealed the proper crystalline phase formation of CuBO2 unaltered by composite formation with graphene. Raman spectroscopic studies were employed to confirm the presence of graphene. A morphological study with field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) suggested the proper wrapping of RGO sheets over CuBO2 nanocubes. Moreover, the close proximity of lattice planes of CuBO2 and RGO to each other was observed in high-resolution TEM studies that were correlated with the Raman spectroscopic studies. Finally, the samples were characterized to study the field emission (FE) properties of the same using a laboratory-made high-vacuum field-emission setup. Finite-element-based theoretical simulation studies were carried out to explain and compare the field emission properties with the experimental results. The FE properties of the composite samples were found to be tuned by the nature of wrapping the RGO sheets over the CuBO2 nanocubes, which was typically dependent upon the spiky morphology of the nanocubes.
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Affiliation(s)
- S Santra
- Thin Film & Nanoscience Laboratory, Department of Physics and ‡School of Materials Science and Nanotechnology, Jadavpur University , Kolkata 700 032, India
| | - N S Das
- Thin Film & Nanoscience Laboratory, Department of Physics and ‡School of Materials Science and Nanotechnology, Jadavpur University , Kolkata 700 032, India
| | - N Besra
- Thin Film & Nanoscience Laboratory, Department of Physics and ‡School of Materials Science and Nanotechnology, Jadavpur University , Kolkata 700 032, India
| | - D Banerjee
- Thin Film & Nanoscience Laboratory, Department of Physics and ‡School of Materials Science and Nanotechnology, Jadavpur University , Kolkata 700 032, India
| | - K K Chattopadhyay
- Thin Film & Nanoscience Laboratory, Department of Physics and ‡School of Materials Science and Nanotechnology, Jadavpur University , Kolkata 700 032, India
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Tripathy SP, Sahoo GS, Paul S, Kumar P, Sharma SD, Santra S, Pal A, Kundu A, Bandyopadhyay T, Avasthi DK. Generation and application of LET calibration curve for neutron dosimetry using CR-39 detector and microwave induced chemical etching. Rev Sci Instrum 2017; 88:063301. [PMID: 28667951 DOI: 10.1063/1.4984621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Microwave induced chemical etching (MICE) has been established as a faster and improved technique compared to other contemporary etching techniques for the development of tracks in a CR-39 detector. However, the methodology could not be applied for LET (linear energy transfer) spectrometry due to lack of a calibration curve using this method. For this purpose, a new LET calibration curve in the range of 12 keV/μm-799 keV/μm was generated considering different ions such as H, Li, C, O, and F on CR-39 having different LETs in water. An empirical relation was established from the obtained calibration curve for determining the value of LET (in water) from the value of V, the ratio of track etch rate to bulk etch rate. For application of this calibration curve in neutron dosimetry, CR-39 detectors were irradiated to neutrons generated from 120 and 142 MeV 16O+27Al systems followed by a similar MICE procedure. The absorbed dose (DLET) and the dose equivalent (HLET) were obtained from the LET spectra and were found to be 13% and 10% higher for 142 MeV 16O+27Al system than those for 120 MeV 16O+27Al system, respectively. The outcome of the study demonstrates the possibility of using the MICE technique for neutron dose estimation by CR-39 via LET spectrometry.
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Affiliation(s)
- S P Tripathy
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - G S Sahoo
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Paul
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - P Kumar
- Inter-University Accelerator Centre, New Delhi 110067, India
| | - S D Sharma
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - S Santra
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A Pal
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A Kundu
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - T Bandyopadhyay
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - D K Avasthi
- Inter-University Accelerator Centre, New Delhi 110067, India
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Daly A, Evans S, Ashmore C, Chahal S, Santra S, MacDonald A. The challenge of nutritional profiling of a protein-free feed module for children on low protein tube feeds with organic acidaemias. J Hum Nutr Diet 2017; 30:292-301. [PMID: 28294445 DOI: 10.1111/jhn.12455] [Citation(s) in RCA: 4] [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] [Indexed: 10/20/2022]
Abstract
BACKGROUND Enteral tube feeding for children with organic acidaemias (OA) is recommended. Protein restriction, providing minimum safe levels of protein intake, is advocated. Standard paediatric tube feeding formulae provide more than the minimum safe protein requirements and are unsuitable in OA without modification. Modified paediatric enteral feeds consist of several modular ingredients. The aim of this prospective longitudinal interventional study was to assess the efficacy of a premeasured novel protein-free module developed for children aged over 12 months compared to conventional practice. METHODS In total, 15 children with OA (11.6-31 kg) needing enteral feeding were recruited. The protein-free module, from either a protein-free infant feed or modular ingredients, was replaced by the study feed. To ensure metabolic stability, energy and protein intake were unchanged. Dietary intake, anthropometry and nutritional biochemistry were recorded at baseline and week 26. RESULTS Dietary intakes of magnesium (P = 0.02), sodium (P = 0.005), vitamin D (P = 0.04), docosahexaenoic acid (P = 0.01) and arachidonic acid (P = 0.001) significantly improved; plasma selenium (P = 0.002) and whole blood glutathione peroxidase (P = 0.02) significantly increased. Feed preparation accuracy as measured by composition analysis showed consistent errors both in pre- and study feeds. CONCLUSIONS A protein-free module improved nutritional intake and biochemistry, although feed preparation errors remained a common finding.
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Affiliation(s)
- A Daly
- Birmingham Children's Hospital, Birmingham, UK
| | - S Evans
- Birmingham Children's Hospital, Birmingham, UK
| | - C Ashmore
- Birmingham Children's Hospital, Birmingham, UK
| | - S Chahal
- Birmingham Children's Hospital, Birmingham, UK
| | - S Santra
- Birmingham Children's Hospital, Birmingham, UK
| | - A MacDonald
- Birmingham Children's Hospital, Birmingham, UK
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Abstract
Controlled fasts can play a valuable role in the diagnosis and management of hypoglycaemia in paediatric clinical practice, but are no substitute for the collecting of appropriate critical samples at the time of hypoglycaemia for metabolic and endocrine studies. Fatty acid oxidation defects, hyperinsulinism and adrenal insufficiency should always be excluded prior to organising controlled fasts. Controlled fasts are safe if conducted in an experienced setting with strict protocols in place. Failure to adhere to protocol can defeat the purpose of the study and can potentially be dangerous. Proper planning in conjunction with the laboratory and close supervision by staff experienced in controlled fasts is crucial to ensure the best quality information is yielded from these procedures.
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Affiliation(s)
- S Sreekantam
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
| | - M A Preece
- Department of Newborn Screening and Biochemical Genetics, Birmingham Children's Hospital, Birmingham, UK
| | - S Vijay
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
| | - J Raiman
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
| | - S Santra
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
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30
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Daly A, Evans S, Chahal S, Santra S, MacDonald A. Glycomacropeptide in children with phenylketonuria: does its phenylalanine content affect blood phenylalanine control? J Hum Nutr Diet 2017; 30:515-523. [PMID: 28111827 DOI: 10.1111/jhn.12438] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 12/01/2022]
Abstract
BACKGROUND In phenylketonuria (PKU), there are no data available for children with respect to evaluating casein glycomacropeptide (CGMP) as an alternative to phenylalanine-free protein substitutes [Phe-free L-amino acid (AA)]. CGMP contains a residual amount of phenylalanine, which may alter blood phenylalanine control. METHODS In a prospective 6-month pilot study, we investigated the effect on blood phenylalanine control of CGMP-amino acid (CGMP-AA) protein substitute in 22 PKU subjects (13 boys, nine girls), median age (range) 11 years (6-16 years). Twelve received CGMP-AA and nine received Phe-free L-AA, (1 CGMP-AA withdrawal). Subjects partially or wholly replaced Phe-free L-AA with CGMP-AA. If blood phenylalanine exceeded the target range, the CGMP-AA dose was reduced and replaced with Phe-free L-amino acids. The control group remained on Phe-free L-AAs. Phenylalanine, tyrosine and Phe : Tyr ratio concentrations were compared with the results for the previous year. RESULTS In the CGMP-AA group, there was a significant increase in blood phenylalanine concentrations (pre-study, 275 μmol L-1 ; CGMP-AA, 317 μmol L-1 ; P = 0.02), a decrease in tyrosine concentrations (pre-study, 50 μmol L-1 ; CGMP-AA, 40 μmol L-1 ; P = 0.03) and an increase in Phe : Tyr ratios (pre-study, Phe : Tyr 4.9:1; CGMP-AA, Phe : Tyr 8:1; P = 0.02). In the control group there was a non-significant fall in phenylalanine concentrations (pre-study 325μmol/L: study 280μmol/L [p = 0.9], and no significant changes for tyrosine or phe/tyr ratios [p = 0.9]. Children taking the CGMP-AA found it more acceptable to L-AA. CONCLUSIONS Blood phenylalanine control declined with CGMP-AA but, by titrating the dose of CGMP-AA, blood phenylalanine control remained within target range. The additional intake of phenylalanine may have contributed to the change in blood phenylalanine concentration. CGMP-AA use requires careful monitoring in children.
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Affiliation(s)
- A Daly
- Birmingham Children's Hospital, Dietetic Department, Birmingham, UK
| | - S Evans
- Birmingham Children's Hospital, Dietetic Department, Birmingham, UK
| | - S Chahal
- Birmingham Children's Hospital, Dietetic Department, Birmingham, UK
| | - S Santra
- IMD (Inherited metabolic department) Birmingham Children's Hospital, Birmingham, UK
| | - A MacDonald
- Birmingham Children's Hospital, Dietetic Department, Birmingham, UK
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Lumba MA, Willis LM, Santra S, Rana R, Schito L, Rey S, Wouters BG, Nitz M. A β-galactosidase probe for the detection of cellular senescence by mass cytometry. Org Biomol Chem 2017; 15:6388-6392. [DOI: 10.1039/c7ob01227f] [Citation(s) in RCA: 17] [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: 01/21/2023]
Abstract
Enzyme substrates for mass cytometry applications enable new dimensions in multiparametric cellular assays.
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Affiliation(s)
- M. A. Lumba
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
| | - L. M. Willis
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
| | - S. Santra
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
| | - R. Rana
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
| | - L. Schito
- Princess Margaret Cancer Centre and The Campbell Family Institute for Cancer Research
- University Health Network
- Toronto
- Canada
| | - S. Rey
- Princess Margaret Cancer Centre and The Campbell Family Institute for Cancer Research
- University Health Network
- Toronto
- Canada
| | - B. G. Wouters
- Princess Margaret Cancer Centre and The Campbell Family Institute for Cancer Research
- University Health Network
- Toronto
- Canada
| | - M. Nitz
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
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Mukherjee A, Biswas P, Shaikh MM, Roy S, Goswami A, Pradhan M, Basu P, Santra S, Pandit S, Mahata K, Shrivastava A. Study of Quasielastic scattering for 7Li+ 159Tb at around- barrier energies. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716300039] [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: 11/15/2022] Open
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Santra S, Macdonald A, Preece MA, Olsen RK, Andresen BS. Long-term outcome of isobutyryl-CoA dehydrogenase deficiency diagnosed following an episode of ketotic hypoglycaemia. Mol Genet Metab Rep 2016; 10:28-30. [PMID: 28053874 PMCID: PMC5198737 DOI: 10.1016/j.ymgmr.2016.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 11/17/2022] Open
Abstract
Isobutyryl-CoA Dehydrogenase Deficiency (IBDD) is an inherited disorder of valine metabolism caused by mutations in ACAD8. Most reported patients have been diagnosed through newborn screening programmes due to elevated C4-carnitine levels and appear clinically asymptomatic. One reported non-screened patient had dilated cardiomyopathy and anaemia at the age of two years. We report a 13 month old girl diagnosed with IBDD after developing hypoglycaemic encephalopathy (blood glucose 1.9 mmol/l) during an episode of rotavirus-induced gastroenteritis. Metabolic investigations demonstrated an appropriate ketotic response (free fatty acids 2594 μmol/l, 3-hydroxybutyrate 3415 μmol/l), mildly elevated plasma lactate (3.4 mmol/l), increased C4-carnitine on blood spot and plasma acylcarnitine analysis and other metabolic abnormalities secondary to ketosis. After recovery, C4-carnitine remained increased and isobutyrylglycine was detected on urine organic acid analysis. Free carnitine was normal in all acylcarnitine samples. IBDD was confirmed by finding a homozygous c.845C > T substitution in ACAD8. The patient was given, but has not used, a glucose polymer emergency regimen and after ten years' follow-up has had no further episodes of hypoglycaemia nor has she developed cardiomyopathy or anaemia. Psychomotor development has been normal to date. Though we suspect IBDD did not contribute to hypoglycaemia in this patient, patients should be followed-up carefully and glucose polymer emergency regimens may be indicated if recurrent episodes of hypoglycaemia occur.
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Affiliation(s)
- S Santra
- Department of Clinical Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - A Macdonald
- Department of Dietetics, Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - M A Preece
- Department of Newborn Screening and Biochemical Genetics, Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - R K Olsen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - B S Andresen
- Research Unit for Molecular Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark; The Villum Center for Bioanalytical Sciences and Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
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Graham JH, Johnson EG, Myers ME, Young M, Rajasekaran P, Das S, Santra S. Potential of Nano-Formulated Zinc Oxide for Control of Citrus Canker on Grapefruit Trees. Plant Dis 2016; 100:2442-2447. [PMID: 30686171 DOI: 10.1094/pdis-05-16-0598-re] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Antimicrobial activity of experimental formulations of two structurally different nano-zinc oxide materials, plate-like Zinkicide SG4 and particulate Zinkicide SG6, was evaluated against Xanthomonas citri subsp. citri, the cause of citrus canker. In vitro assay demonstrated Zinkicide SG4 had a twofold lower minimum inhibitory concentration (MIC) against Escherichia coli and X. alfalfae subsp. citrumelonis (62.5 to 250 µg/ml) compared with copper sulfate (250 µg/ml), copper hydroxide (250 to 500 µg/ml), or cuprous oxide/zinc oxide (125 to 250 µg/ml). Zinkicide SG6 had a sevenfold to eightfold lower MIC against Escherichia coli and X. alfalfae subsp. citrumelonis (31 to 250 μg/ml). Leaves of sweet orange (Citrus sinensis) and fruit of 'Ruby Red' grapefruit (C. paradisi) were evaluated for citrus canker disease control. A greenhouse assay with foliage demonstrated that spray treatment with Zinkicide reduced citrus canker lesion development after injection-infiltration of X. citri subsp. citri into the leaf intercellular space. In field trials conducted in Southeast Florida in 2014 and 2015, Zinkicide SG4 and SG6 reduction of grapefruit canker incidence exceeded that of cuprous oxide and cuprous oxide/zinc oxide bactericides. Zinkicide formulations were also effective against the fungal diseases, citrus scab (Elsinoe fawcetti) and melanose (Diaporthe citri), on grapefruit. No sign of phytotoxicity to the fruit rind was observed during either season. Antimicrobial activity of Zinkicide for protection of leaves and fruit against X. citri subsp. citri was comparable or exceeded that for commercial copper and zinc oxide formulations which may be attributed to translaminar movement of Zinkicide.
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Affiliation(s)
- J H Graham
- University of Florida, IFAS, Soil and Water Science and Plant Pathology Departments, Citrus Research and Education Center, Lake Alfred 33850
| | - E G Johnson
- University of Florida, IFAS, Soil and Water Science and Plant Pathology Departments, Citrus Research and Education Center, Lake Alfred 33850
| | - M E Myers
- University of Florida, IFAS, Soil and Water Science and Plant Pathology Departments, Citrus Research and Education Center, Lake Alfred 33850
| | - M Young
- NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826
| | - P Rajasekaran
- NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826
| | - S Das
- NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826
| | - S Santra
- NanoScience Technology Center, Department of Chemistry, Department of Materials Science and Engineering and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL 32826
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Sreekantam S, Nicklaus-Wollenteit I, Orr J, Sharif K, Vijay S, McKiernan PJ, Santra S. Successful long-term outcome of liver transplantation in late-onset lysosomal acid lipase deficiency. Pediatr Transplant 2016; 20:851-4. [PMID: 27392817 DOI: 10.1111/petr.12748] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/02/2016] [Indexed: 12/20/2022]
Abstract
Late-onset LAL deficiency, previously referred to as cholesteryl ester storage disorder, is a rare lysosomal storage disorder characterized by accumulation of cholesteryl esters. It has a heterogeneous clinical phenotype including abdominal pain, poor growth, hyperlipidemia with vascular complications and hepatosplenomegaly. End-stage liver disease may occur, but there are few reports of successful LT. There are also concerns that systemic manifestations of the disease might persist post-LT. We report a case with excellent outcome eight yr following LT. The subject was noted to have asymptomatic hepatosplenomegaly during an intercurrent illness, and LAL deficiency was confirmed with compound heterozygosity in the LIPA. Despite dietary fat restriction, he developed signs of progressive liver disease and subsequently developed hepatopulmonary syndrome. He underwent cadaveric LT at the age of nine and a half yr and recovered with prompt resolution of hepatopulmonary syndrome. Eight yr post-transplant he has normal growth, normal lipid profile, and liver and renal function tests. Liver histology showed no evidence of disease recurrence at this stage. LT in this subject resulted in an excellent functional correction of late-onset LAL deficiency.
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Affiliation(s)
- S Sreekantam
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
| | | | - J Orr
- Department of Hepatology and Gastroenterology, Freeman Hospital, Newcastle upon Tyne, UK
| | - K Sharif
- Department of Hepatology, Birmingham Children's Hospital, Birmingham, UK
| | - S Vijay
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
| | - P J McKiernan
- Department of Hepatology, Birmingham Children's Hospital, Birmingham, UK
| | - S Santra
- Department of Metabolic Medicine, Birmingham Children's Hospital, Birmingham, UK
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Santra S, Sinha AK, De Luca A, Ali SZ, Udrea F, Guha PK, Ray SK, Gardner JW. Mask-less deposition of Au-SnO2 nanocomposites on CMOS MEMS platform for ethanol detection. Nanotechnology 2016; 27:125502. [PMID: 26890414 DOI: 10.1088/0957-4484/27/12/125502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Here we report on the mask-less deposition of Au-SnO2 nanocomposites with a silicon-on-insulator (SOI) complementary metal oxide semiconductor (CMOS) micro electro mechanical system (MEMS) platform through the use of dip pen nanolithography (DPN) to create a low-cost ethanol sensor. MEMS technology is used in order to achieve low power consumption, by the employment of a membrane structure formed using deep reactive ion etching technique. The device consists of an embedded tungsten micro-heater with gold interdigitated electrodes on top of the SOI membrane. The tungsten micro-heater is used to raise the membrane temperature up to its operating temperature and the electrodes are used to measure the resistance of the nanocomposite sensing layer. The CMOS MEMS devices have high electro-thermal efficiency, with 8.2 °C temperature increase per mW power of consumption. The sensing material (Au-SnO2 nanocomposite) was synthesised starting from SnO nanoplates, then Au nanoparticles were attached chemically to the surface of SnO nanoplates, finally the mixture was heated at 700 °C in an oven in air for 4 h. This composite material was sonicated for 2 h in terpineol to make a viscous homogeneous slurry and then 'written' directly across the electrode area using the DPN technique without any mask. The devices were characterised by exposure to ethanol vapour in humid air in the concentration range of 100-1000 ppm. The sensitivity varied from 1.2 to 0.27 ppm(-1) for 100-1000 ppm of ethanol at 10% relative humid air. Selectivity measurements showed that the sensors were selective towards ethanol when they were exposed to acetone and toluene.
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Affiliation(s)
- S Santra
- Department of Physics, Indian Institute of Technology, Kharagpur, 721302, India
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Broomfield A, Fletcher J, Davison J, Finnegan N, Fenton M, Chikermane A, Beesley C, Harvey K, Cullen E, Stewart C, Santra S, Vijay S, Champion M, Abulhoul L, Grunewald S, Chakrapani A, Cleary MA, Jones SA, Vellodi A. Response of 33 UK patients with infantile-onset Pompe disease to enzyme replacement therapy. J Inherit Metab Dis 2016; 39:261-71. [PMID: 26497565 DOI: 10.1007/s10545-015-9898-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Enzyme replacement therapy (ERT) for infantile-onset Pompe disease has been commercially available for almost 10 years. We report the experience of its use in a cohort treated at three specialist lysosomal treatment centres in the UK. METHODS A retrospective case-note review was performed, with additional data being gathered from two national audits on all such patients treated with ERT. The impact on the outcome of various characteristics, measured just prior to the initiation of ERT (baseline), was evaluated using logistic regression. RESULTS Thirty-three patients were identified; 13/29 (45%) were cross-reactive immunological material (CRIM) negative, and nine were immunomodulated. At baseline assessment, 79% were in heart failure, 66% had failure to thrive and 70% had radiological signs of focal pulmonary collapse. The overall survival rate was 60%, ventilation-free survival was 40% and 30% of patients were ambulatory. Median follow-up of survivors was 4 years, 1.5 months (range 6 months to 13.5 years). As with previous studies, the CRIM status impacted on all outcome measures. However, in this cohort, baseline failure to thrive was related to death and lack of ambulation, and left ventricular dilatation was a risk factor for non-ventilator-free survival. CONCLUSION The outcome of treated patients remains heterogeneous despite attempts at immunomodulation. Failure to thrive at baseline and left ventricular dilation appear to be associated with poorer outcomes.
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Affiliation(s)
- A Broomfield
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Central Manchester University Hospital Foundation Trust, Oxford Road, Manchester, UK.
| | - J Fletcher
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Central Manchester University Hospital Foundation Trust, Oxford Road, Manchester, UK
| | - J Davison
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - N Finnegan
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - M Fenton
- Cardiology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - A Chikermane
- Department of Paediatric Cardiology, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, UK
| | - C Beesley
- Regional Genetics Laboratories, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - K Harvey
- Enzyme Unit, Chemical Pathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - E Cullen
- Enzyme Unit, Chemical Pathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - C Stewart
- Department of Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, UK
| | - S Santra
- Department of Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, UK
| | - S Vijay
- Department of Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, UK
| | - M Champion
- Department of Inherited Metabolic Disease, Guy's and St Thomas' NHS Foundation Trusts, Evelina London Children's Hospital, Westminster Bridge Road, London, UK
| | - L Abulhoul
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - S Grunewald
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - A Chakrapani
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - M A Cleary
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - S A Jones
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Central Manchester University Hospital Foundation Trust, Oxford Road, Manchester, UK
| | - A Vellodi
- Metabolic Medicine Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
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De Luca A, Santra S, Ghosh R, Ali SZ, Gardner JW, Guha PK, Udrea F. Temperature-modulated graphene oxide resistive humidity sensor for indoor air quality monitoring. Nanoscale 2016; 8:4565-72. [PMID: 26842731 DOI: 10.1039/c5nr08598e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this paper we present a temperature-modulated graphene oxide (GO) resistive humidity sensor that employs complementary-metal-oxide-semiconductor (CMOS) micro-electro-mechanical-system (MEMS) micro-hotplate technology for the monitoring and control of indoor air quality (IAQ). GO powder is obtained by chemical exfoliation, dispersed in water and deposited via ink-jet printing onto a low power micro-hotplate. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) show the typical layered and wrinkled morphology of the GO. Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and Fourier transform infra-red (FTIR) spectroscopy indicate that the GO flakes possess a significant number of oxygen containing functional groups (epoxy, carbonyl, hydroxyl) extremely attractive for humidity detection. Electro-thermal characterisation of the micro-hotplates shows a thermal efficiency of 0.11 mW per °C, resulting in a sensor DC power consumption of only 2.75 mW at 50 °C. When operated in an isothermal mode, the sensor response is detrimentally affected by significant drift, hysteretic behaviour, slow response/recovery times and hence poor RH level discrimination. Conversely, a temperature modulation technique coupled with a differential readout methodology results in a significant reduction of the sensor drift, improved linear response with a sensitivity of 0.14 mV per %, resolution below 5%, and a maximum hysteresis of ±5%; response and recovery times equal to 189 ± 49 s and 89 ± 5 s, respectively. These performance parameters satisfy current IAQ monitoring requirements. We have thus demonstrated the effectiveness of integrating GO on a micro-hotplate CMOS-compatible platform enabling temperature modulation schemes to be easily applied in order to achieve compact, low power, low cost humidity IAQ monitoring.
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Affiliation(s)
- A De Luca
- Department of Engineering, Electrical Engineering Division, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK.
| | - S Santra
- Department of Physics, Indian Institute of Technology, Kharagpur, 721302, India
| | - R Ghosh
- E&ECE Department, Indian Institute of Technology, Kharagpur, 721302, India
| | - S Z Ali
- Cambridge CMOS Sensors Ltd, Deanland House, 160 Cowley Road, CB4 0DL, Cambridge, UK
| | - J W Gardner
- Cambridge CMOS Sensors Ltd, Deanland House, 160 Cowley Road, CB4 0DL, Cambridge, UK and School of Engineering, University of Warwick, CV4 7AL, Coventry, UK
| | - P K Guha
- E&ECE Department, Indian Institute of Technology, Kharagpur, 721302, India
| | - F Udrea
- Department of Engineering, Electrical Engineering Division, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK. and Cambridge CMOS Sensors Ltd, Deanland House, 160 Cowley Road, CB4 0DL, Cambridge, UK
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Daly A, Evans S, Chahal S, Surplice I, Vijay S, Santra S, MacDonald A. The challenges of vitamin and mineral supplementation in children with inherited metabolic disorders: a prospective trial. J Hum Nutr Diet 2016; 29:434-40. [PMID: 26781762 DOI: 10.1111/jhn.12354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND In order to achieve metabolic stability, dietary treatment of inborn errors of metabolism may require restriction of protein, fat or carbohydrate. Manipulation of dietary intake potentially reduces micronutrient status, and provision of a comprehensive vitamin and mineral supplement becomes an essential adjunct to dietary treatment. AIM To review the efficacy of a new complete vitamin and mineral supplement [Fruitivits, Vitaflo Ltd] in 14 subjects in an open prospective 26-week study. METHOD All subjects had dietary restrictions: low protein diets (57%, n = 8), regular daytime cornstarch and overnight glucose polymer tube feeds (29%, n = 4), low fat diet (7%, n = 1) and modified Atkins diet (7%, n = 1). Plasma nutritional biochemistry, anthropometry and food frequency questionnaires were collected at week 0, 12 and 26 weeks respectively. RESULTS Five nutritional parameters showed a significant improvement from baseline (week 0) to study end (week 26): folate (P = 0.01), vitamin E (P = 0.04), plasma selenium (P = 0.002), whole blood selenium (P = 0.04) and total vitamin D (P = 0.008). All the other nutritional markers did not significantly change. Even with regular monitoring, 37% of the product remained unused. CONCLUSIONS Despite improvements in some nutritional markers, overall use of the vitamin and mineral supplement was less than prescribed. New methods are needed to guarantee delivery of micronutrients in children at risk of deficiencies as a result of an essential manipulation of diet in inborn disorders of metabolism.
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Affiliation(s)
- A Daly
- Department of Dietetics, Birmingham Children's Hospital, Birmingham, UK
| | - S Evans
- Department of Dietetics, Birmingham Children's Hospital, Birmingham, UK
| | - S Chahal
- Department of Dietetics, Birmingham Children's Hospital, Birmingham, UK
| | - I Surplice
- Department of Biochemistry, Birmingham Children's Hospital, Birmingham, UK
| | - S Vijay
- Department of Inherited Metabolic Disorders, Birmingham Children's Hospital, Birmingham, UK
| | - S Santra
- Department of Inherited Metabolic Disorders, Birmingham Children's Hospital, Birmingham, UK
| | - A MacDonald
- Department of Dietetics, Birmingham Children's Hospital, Birmingham, UK
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Chattopadhyay D, Santra S, Pal A, Kundu A, Nayak BK, Mahata K, Ramachandran K, Tripathi R, Parkar VV, Sodaye S, Sarkar D, Pandey B, Kaur G. Elastic, inelastic and inclusive alpha cross sections in 6Li+ 112Sn system. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611706022] [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: 11/14/2022] Open
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Bhowmick P, Banerjee D, Santra S, Sen D, Das B, Chattopadhyay KK. Amorphous carbon nanotubes as potent sorbents for removal of a phenolic derivative compound and arsenic: theoretical support of experimental findings. RSC Adv 2016. [DOI: 10.1039/c5ra23382h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Amorphous carbon nanotubes can be uses as potential material for water purification.
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Affiliation(s)
- P. Bhowmick
- School of Material Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
| | - D. Banerjee
- School of Material Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
| | - S. Santra
- Thin Film and NanoScience Laboratory
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - D. Sen
- Thin Film and NanoScience Laboratory
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - B. Das
- School of Material Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
| | - K. K. Chattopadhyay
- School of Material Science and Nanotechnology
- Jadavpur University
- Kolkata 700032
- India
- Thin Film and NanoScience Laboratory
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MacDonald A, Ahring K, Almeida MF, Belanger-Quintana A, Blau N, Burlina A, Cleary M, Coskum T, Dokoupil K, Evans S, Feillet F, Giżewska M, Gokmen Ozel H, Lotz-Havla AS, Kamieńska E, Maillot F, Lammardo AM, Muntau AC, Puchwein-Schwepcke A, Robert M, Rocha JC, Santra S, Skeath R, Strączek K, Trefz FK, van Dam E, van Rijn M, van Spronsen F, Vijay S. The challenges of managing coexistent disorders with phenylketonuria: 30 cases. Mol Genet Metab 2015; 116:242-51. [PMID: 26498184 DOI: 10.1016/j.ymgme.2015.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/06/2015] [Accepted: 10/07/2015] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The few published case reports of co-existent disease with phenylketonuria (PKU) are mainly genetic and familial conditions from consanguineous marriages. The clinical and demographic features of 30 subjects with PKU and co-existent conditions were described in this multi-centre, retrospective cohort study. METHODS Diagnostic age of PKU and co-existent condition, treatment regimen, and impact of co-existent condition on blood phenylalanine (Phe) control and PKU management were reported. RESULTS 30 patients (11 males and 19 females), with PKU and a co-existent condition, current median age of 14 years (range 0.4 to 40 years) from 13 treatment centres from Europe and Turkey were described. There were 21 co-existent conditions with PKU; 9 were autoimmune; 6 gastrointestinal, 3 chromosomal abnormalities, and 3 inherited conditions. There were only 5 cases of parental consanguinity. Some patients required conflicting diet therapy (n=5), nutritional support (n=7) and 5 children had feeding problems. There was delayed diagnosis of co-existent conditions (n=3); delayed treatment of PKU (n=1) and amenorrhea associated with Grave's disease that masked a PKU pregnancy for 12 weeks. Co-existent conditions adversely affected blood Phe control in 47% (n=14) of patients. Some co-existent conditions increased the complexity of disease management and increased management burden for patients and caregivers. CONCLUSIONS Occurrence of co-existent disease is not uncommon in patients with PKU and so investigation for co-existent disorders when the clinical history is not completely consistent with PKU is essential. Integrating care of a second condition with PKU management is challenging.
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Affiliation(s)
| | - K Ahring
- Center for PKU, The Kennedy Centre, University Hospital, Glostrup, Copenhagen, Denmark
| | - M F Almeida
- Centro de Genética Médica Doutor Jacinto de Magalhães, CHP EPE, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences, University of Porto-UMIB/ICBAS/UP, Porto, Portugal
| | | | - N Blau
- Dietmar-Hopp Metabolic Center, University Children's Hospital, Heidelberg, Germany
| | - A Burlina
- Division of Inherited Metabolic Diseases, University Hospital, Padua, Italy
| | - M Cleary
- Hospital for Sick Children, Great Ormond Street, London, UK
| | - T Coskum
- Department of Inherited Metabolic Disorders, Hacettepe University, Ankara, Turkey
| | - K Dokoupil
- Department of Metabolism and Nutrition, Dr. von Hauner Children's Hospital, University of Munich, Munich, Germany
| | - S Evans
- The Children's Hospital, Birmingham, UK
| | - F Feillet
- Hôpital d'enfants Brabois, Vandoeuvre les Nancy, France
| | - M Giżewska
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology, Pomeranian Medical University, Szczecin, Poland
| | - H Gokmen Ozel
- Department of Nutrition and Dietetics, Hacettepe University, Ankara, Turkey
| | - A S Lotz-Havla
- Dr. von Hauner Children's Hospital, University of Munich, Munich, Germany
| | - E Kamieńska
- Department of Paediatrics and Haematology, Pomeranian Medical University, Szczecin, Poland
| | - F Maillot
- CHRU de Tours, service de medicine interne, Université François Rabelais, Tours, France
| | - A M Lammardo
- Depart Ped, San Paolo Hosp Univ Milan, Milan, Italy
| | - A C Muntau
- University Children's Hospital, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | | | - M Robert
- Hôpital Universitaire des Enfants Reine Fabiola, Brussels, Belgium
| | - J C Rocha
- Centro de Genética Médica Doutor Jacinto de Magalhães, CHP EPE, Porto, Portugal; Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Porto, Portugal; Center for Health Technology and Services Research (CINTESIS), Portugal
| | - S Santra
- The Children's Hospital, Birmingham, UK
| | - R Skeath
- Hospital for Sick Children, Great Ormond Street, London, UK
| | - K Strączek
- Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology, Pomeranian Medical University, Szczecin, Poland
| | - F K Trefz
- Division of Inborn Metabolic Diseases, University Children's Hospital, Heidelberg, Germany
| | - E van Dam
- Section of Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - M van Rijn
- Section of Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - F van Spronsen
- Section of Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - S Vijay
- The Children's Hospital, Birmingham, UK
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Santra S, Hu G, Howe RCT, De Luca A, Ali SZ, Udrea F, Gardner JW, Ray SK, Guha PK, Hasan T. CMOS integration of inkjet-printed graphene for humidity sensing. Sci Rep 2015; 5:17374. [PMID: 26616216 PMCID: PMC4663628 DOI: 10.1038/srep17374] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [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: 08/21/2015] [Accepted: 10/29/2015] [Indexed: 12/22/2022] Open
Abstract
We report on the integration of inkjet-printed graphene with a CMOS micro-electro-mechanical-system (MEMS) microhotplate for humidity sensing. The graphene ink is produced via ultrasonic assisted liquid phase exfoliation in isopropyl alcohol (IPA) using polyvinyl pyrrolidone (PVP) polymer as the stabilizer. We formulate inks with different graphene concentrations, which are then deposited through inkjet printing over predefined interdigitated gold electrodes on a CMOS microhotplate. The graphene flakes form a percolating network to render the resultant graphene-PVP thin film conductive, which varies in presence of humidity due to swelling of the hygroscopic PVP host. When the sensors are exposed to relative humidity ranging from 10-80%, we observe significant changes in resistance with increasing sensitivity from the amount of graphene in the inks. Our sensors show excellent repeatability and stability, over a period of several weeks. The location specific deposition of functional graphene ink onto a low cost CMOS platform has the potential for high volume, economic manufacturing and application as a new generation of miniature, low power humidity sensors for the internet of things.
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Affiliation(s)
- S. Santra
- Department of Physics, Indian Institute of Technology, Kharagpur, 721302, India
| | - G. Hu
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - R. C. T. Howe
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - A. De Luca
- Department of Engineering, University of Cambridge, Cambridge, CB3 0FA, UK
| | - S. Z. Ali
- Cambridge CMOS Sensors Ltd., Cambridge, CB4 0DL, UK
| | - F. Udrea
- Department of Engineering, University of Cambridge, Cambridge, CB3 0FA, UK
- Cambridge CMOS Sensors Ltd., Cambridge, CB4 0DL, UK
| | - J. W. Gardner
- School of Engineering, University of Warwick, Coventry, CV4 7AL, UK
| | - S. K. Ray
- Department of Physics, Indian Institute of Technology, Kharagpur, 721302, India
| | - P. K. Guha
- E & ECE Department, Indian Institute of Technology, Kharagpur, 721302, India
| | - T. Hasan
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
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Abstract
The current therapy for depression is less than ideal with remission rates of only 25-35% and a slow onset of action with other associated side effects. The persistence of anhedonia originating from depressed dopaminergic activity is one of the most treatment-resistant symptoms of depression. Therefore, it has been hypothesized that triple reuptake inhibitors (TRIs) with potency to block dopamine reuptake in addition to serotonin and norepinephrine transporters should produce higher efficacy. The current review comprehensively describes the development of TRIs and discusses the importance of evaluation of in vivo transporter occupancy of TRIs, which should correlate with efficacy in humans.
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Affiliation(s)
- Horrick Sharma
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Soumava Santra
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Aloke Dutta
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI 48202, USA
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Daly A, Evans S, Gerrard A, Santra S, Vijay S, MacDonald A. The Nutritional Intake of Patients with Organic Acidaemias on Enteral Tube Feeding: Can We Do Better? JIMD Rep 2015; 28:29-39. [PMID: 26510853 PMCID: PMC5059221 DOI: 10.1007/8904_2015_443] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 11/10/2014] [Revised: 04/01/2015] [Accepted: 04/13/2015] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Detailed nutritional intake data on children with organic acidaemias (OA) (propionic acidaemia (PA), vitamin B12 nonresponsive methylmalonic acidaemia (MMA) and isovaleric acidaemia (IVA)) remains unreported. Aim and subjects: A review of the longitudinal nutritional intake of 14 children with organic acidaemias (PA n = 8; MMA n = 5; IVA n = 1) dependent on enteral tube feeding (≥90% of energy requirements) from a single treatment centre. METHODS Nutritional intake (energy, protein, precursor-free L-amino acids, vitamins and minerals), anthropometry and nutritional biochemistry data were collated from diagnosis to current age. RESULTS The median energy intake was only 72% (63-137) of the estimated average DH (1991) requirement (EAR), decreasing significantly by 40% between 6 months and 5 years (p < 0.05). Total protein intake met WHO/FAO/UNU (2007) safe intake levels with median (range) precursor-free L-amino acids providing 21% (14-28) of total protein intake. Median mineral intake for sodium was 57% (20-97%), potassium 64% (27-125%) and magnesium 72% (22-116%) and was consistently < RNI for all age points. Fibre median intake was 4 g/day (0-11 g), and fluid intake provided 80% (60-100%) of the requirements for age. Linear growth was poor, and children were overweight for their height (1-10 years: z score median weight +0.6, height -1.2). Nutritional markers consistently indicated that plasma valine concentrations were < target reference ranges in PA and MMA. Iron deficiency anaemia was common in MMA/PA, and in PA, 50% of plasma zinc concentrations were < reference range. CONCLUSION In MMA/PA, energy intake decreases over time, weight gain accelerates, but linear height is poor. There are many nutrient deficiencies which may affect short- and long-term outcome of patients with organic acidaemias. The quality of long-term diet in these conditions deserves more attention.
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Affiliation(s)
- Anne Daly
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK.
| | - S Evans
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - A Gerrard
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - S Santra
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - S Vijay
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - A MacDonald
- Departments of Dietetics and Inherited Metabolic Disorders, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
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Santra S, Bhattacharya A, Mukhopadhyay T, Agrawal D, Kumar S, Das P, Chakrabarty P. Use of Iron Chelating Agents in Transfusion Dependent Thalassaemia Major Patients. Mymensingh Med J 2015; 24:838-844. [PMID: 26620028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This cross-sectional study was done to find and investigate the utilization pattern of iron chelating agents among 73 transfusion-dependent thalassaemia major patients with continuous enrolment for at least 1 year in a day care treatment centre run by The Thalassaemia Society of India, Kolkata from November 2014 to January 2015. Transfusion dependent thalassaemia major patients above the age of 2 years managed by various haematologists and Thalassaemia specialists were studied. The administration of iron chelators namely Desferrioxamine (DFO), Deferiprone (DFP) and Deferasirox (DFX) were evaluated. Forty seven (64%) of the thalassaemics had serum ferritin level below 2500 ng/dl, of whom 20(27%) patients have ferritin level below 1000ng/dl. A number of 55(75%) of 73 patients who were treated with a single chelating agent consisted 50 patients only on DFX. Exact 8(67%) patients were on DFO+DFP and 4(33%) are treated with DFX+DFP. The mean age was 19 and mean serum ferritin level was 2280 ng/dl among the thalassaemia major patients. DFX was used 68% of patients as monotherapy and 5% patients in combination therapy with DFP. DFX in the dose of 30-40 mg/kg/day was prescribed in 52% of patients. Mean dose of 15 mg/kg/day of DFX was been administered in combination with DFP (75 mg/kg/day) in 5% patients. DFO+DFP were preferred by 8 patients, out of which 6 were aged above 25. Cost of monotherapy is twice that of combination therapy. These data demonstrates the ferritin status and present scenario of utilization of chelating agents among thalassaemia major patients on repeated transfusions. The dosing of new drug, Deferasirox and the cost analysis of various chelating regimen has also been dealt. Individualization rather than rationalization of chelation therapy should be focussed upon in managing iron overload in thalassaemia.
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Affiliation(s)
- S Santra
- Dr Soumya Santra, Resident & Tutor, Department of Pharmacology, IMS & SUM Hospital, Ghatikia, Bhubaneswar, India; E-mail:
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Snow WM, Anderson E, Barrón-Palos L, Bass CD, Bass TD, Crawford BE, Crawford C, Dawkins JM, Esposito D, Fry J, Gardiner H, Gan K, Haddock C, Heckel BR, Holley AT, Horton JC, Huffer C, Lieffers J, Luo D, Maldonado-Velázquez M, Markoff DM, Micherdzinska AM, Mumm HP, Nico JS, Sarsour M, Santra S, Sharapov EI, Swanson HE, Walbridge SB, Zhumabekova V. A slow neutron polarimeter for the measurement of parity-odd neutron rotary power. Rev Sci Instrum 2015; 86:055101. [PMID: 26026552 DOI: 10.1063/1.4919412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 04/19/2015] [Indexed: 06/04/2023]
Abstract
We present the design, description, calibration procedure, and an analysis of systematic effects for an apparatus designed to measure the rotation of the plane of polarization of a transversely polarized slow neutron beam as it passes through unpolarized matter. This device is the neutron optical equivalent of a crossed polarizer/analyzer pair familiar from light optics. This apparatus has been used to search for parity violation in the interaction of polarized slow neutrons in matter. Given the brightness of existing slow neutron sources, this apparatus is capable of measuring a neutron rotary power of dϕ/dz = 1 × 10(-7) rad/m.
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Affiliation(s)
- W M Snow
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - E Anderson
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - L Barrón-Palos
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México, D.F. 04510, México
| | - C D Bass
- LeMoyne College, 1419 Salt Springs Road, Syracuse, New York 13214, USA
| | - T D Bass
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - B E Crawford
- Gettysburg College, 300 North Washington Street, Gettysburg, Pennsylvania 17325, USA
| | - C Crawford
- University of Kentucky, 177 Chem.-Phys. Building, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
| | - J M Dawkins
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - D Esposito
- University of Dayton, 300 College Park, Dayton, Ohio 45469, USA
| | - J Fry
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - H Gardiner
- Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - K Gan
- The George Washington University, 2121 I Street N.W., Washington, District of Columbia 20052, USA
| | - C Haddock
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - B R Heckel
- University of Washington/Center for Experimental Nuclear Physics and Astrophysics, Box 354290, Seattle, Washington 98195, USA
| | - A T Holley
- Tennessee Tech University, 1 William L. Jones Drive, Cookeville, Tennessee 38505, USA
| | - J C Horton
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - C Huffer
- North Carolina State University, 2401 Stinson Drive, Raleigh, North Carolina 27695, USA
| | - J Lieffers
- Embry-Riddle Aeronautical University, 600 South Clyde Morris Blvd., Daytona Beach, Florida 32114, USA
| | - D Luo
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - M Maldonado-Velázquez
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México, D.F. 04510, México
| | - D M Markoff
- North Carolina Central University/Triangle Universities Nuclear Lab, 1801 Fayetteville Street, Durham, North Carolina 27707, USA
| | - A M Micherdzinska
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - H P Mumm
- National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
| | - J S Nico
- National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
| | - M Sarsour
- Georgia State University, 29 Peachtree Center Avenue, Atlanta, Georgia 30303-4106, USA
| | - S Santra
- Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - E I Sharapov
- Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Russia
| | - H E Swanson
- University of Washington/Center for Experimental Nuclear Physics and Astrophysics, Box 354290, Seattle, Washington 98195, USA
| | - S B Walbridge
- Indiana University and Center for the Exploration of Energy and Matter, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA
| | - V Zhumabekova
- Al-Farabi Kazakh National University, Al-Farabi Ave. 71, 050038 Almaty, Kazakhstan
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Santra S, Kovalev IS, Kopchuk DS, Zyryanov GV, Majee A, Charushin VN, Chupakhin ON. Role of polar solvents for the synthesis of pillar[6]arenes. RSC Adv 2015. [DOI: 10.1039/c5ra19569a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient procedure for the synthesis of pillar[6]arenes has been developed.
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Affiliation(s)
- S. Santra
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
| | - I. S. Kovalev
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
| | - D. S. Kopchuk
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis
| | - G. V. Zyryanov
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis
| | - A. Majee
- Department of Chemistry
- Visva-Bharati (A Central University)
- Santiniketan-731235
- India
| | - V. N. Charushin
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis
| | - O. N. Chupakhin
- Ural Federal University
- Chemical Engineering Institute
- Yekaterinburg
- Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis
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Santra S, De Luca A, Bhaumik S, Ali SZ, Udrea F, Gardner JW, Ray SK, Guha PK. Dip pen nanolithography-deposited zinc oxide nanorods on a CMOS MEMS platform for ethanol sensing. RSC Adv 2015. [DOI: 10.1039/c5ra04584c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Zinc oxide nanorods integration with CMOS MEMS substrate using dip pen nanolithography for low cost, low power ethanol sensor development.
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Affiliation(s)
- S. Santra
- Department of Physics
- Indian Institute of Technology
- Kharagpur
- India
| | - A. De Luca
- Engineering Department
- University of Cambridge
- Cambridge
- UK
| | - S. Bhaumik
- Department of Physics
- Indian Institute of Technology
- Kharagpur
- India
| | - S. Z. Ali
- Cambridge CMOS Sensors Ltd
- Cambridge
- UK
| | - F. Udrea
- Engineering Department
- University of Cambridge
- Cambridge
- UK
- Cambridge CMOS Sensors Ltd
| | - J. W. Gardner
- Cambridge CMOS Sensors Ltd
- Cambridge
- UK
- School of Engineering
- University of Warwick
| | - S. K. Ray
- Department of Physics
- Indian Institute of Technology
- Kharagpur
- India
| | - P. K. Guha
- E & ECE Department
- Indian Institute of Technology
- Kharagpur
- India
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50
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Santra S, Sharma H, Vedachalam S, Antonio T, Reith M, Dutta A. Development of potent dopamine-norepinephrine uptake inhibitors (DNRIs) based on a (2S,4R,5R)-2-benzhydryl-5-((4-methoxybenzyl)amino)tetrahydro-2H-pyran-4-ol molecular template. Bioorg Med Chem 2014; 23:821-8. [PMID: 25593099 DOI: 10.1016/j.bmc.2014.12.040] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/11/2014] [Accepted: 12/17/2014] [Indexed: 10/24/2022]
Abstract
Current therapy of depression is less than ideal with remission rates of only 25-35% and response rates of 45-60%. It has been hypothesized that a dysfunctional dopaminergic system in the mesocorticolimbic pathway in depressive disorder may lead to development of anhedonia associated with loss of pleasure and interest along with loss of motivation. The current antidepressants do not address dopamine dysfunction which might explain their low efficacy. In this report, we have described an SAR study on our pyran-based triple reuptake inhibitors (TRIs) which are being investigated as the next-generation antidepressants. In the present work we demonstrate that our lead TRIs can be modified with appropriate aromatic substitutions to display a highly potent SSRI profile for compounds 2a and 4a (Ki (SERT); 0.71 and 2.68nM, respectively) or a potent DNRI profile for compounds 6b and 6h (Ki (DAT/NET); 8.94/4.76 and 13/7.37nM, respectively). Compounds 4g-4i exhibited potencies at all three monoamine transporters. The results provide insights into the structural requirements for developing selective dual- and triple-uptake inhibitors from a unique pyran molecular template for an effective management of depression and related disorders.
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Affiliation(s)
- Soumava Santra
- Wayne State University, Department of Pharmaceutical Sciences, Applebaum College of Pharmacy & Health Sciences, Rm# 3128, Detroit, MI 48202, United States
| | - Horrick Sharma
- Wayne State University, Department of Pharmaceutical Sciences, Applebaum College of Pharmacy & Health Sciences, Rm# 3128, Detroit, MI 48202, United States
| | - Seenuvasan Vedachalam
- Wayne State University, Department of Pharmaceutical Sciences, Applebaum College of Pharmacy & Health Sciences, Rm# 3128, Detroit, MI 48202, United States
| | - Tamara Antonio
- New York University, Department of Psychiatry, New York, NY 10016, United States
| | - Maarten Reith
- New York University, Department of Psychiatry, New York, NY 10016, United States; New York University, Department of Pharmacology, New York, NY 10016, United States
| | - Aloke Dutta
- Wayne State University, Department of Pharmaceutical Sciences, Applebaum College of Pharmacy & Health Sciences, Rm# 3128, Detroit, MI 48202, United States.
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