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Modak P, Modak B, Arya A. Probing site-selective doping and charge compensating defects in KMgF 3: insights from a hybrid DFT study. Phys Chem Chem Phys 2023; 25:29968-29981. [PMID: 37902924 DOI: 10.1039/d3cp03966h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Design of optoelectronic materials with tunable properties using activators and defect clusters has become one of the prime interests of current research. In this study, detailed Density Functional Theory based calculations have been presented to investigate the geometries and electronic structures of various possible defect clusters using Eu-KMgF3 as a probe which has numerous technological and industrial applications. Using a more reliable hybrid density functional, we have calculated defect formation energies and thermodynamic transition levels to get knowledge about the site selectivity of Eu. It has been observed that the electronic structure of Eu-KMgF3 is not only dependent on the site of doping but also on the oxidation state of Eu (2+/3+). The present study also investigates the relative stability of different kinds of defects and defect clusters under various synthetic growth conditions. The ultimate aim is to find out the microscopic origin of the fundamental optical properties of Eu-KMgF3 and provide an unambiguous explanation of available experimental results. Thus, it has been revealed that doping with Eu results in the spontaneous formation of intrinsic defects, which contribute to the observed optical behaviour. We have also extended our study to investigate the role of codoping with Li in determining the geometry and electronic structure of Eu-KMgF3 aiming to explain its impact on the optical properties. Thus, a complete presentation of the influence of the activator in the absence and presence of lattice defects on the optical properties of KMgF3 has been accomplished in the current study. We strongly believe that the present study will be helpful in designing tunable phosphor materials by a defect-controlled synthesis strategy.
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Affiliation(s)
- Pampa Modak
- RSD, Atomic Energy Regulatory Board, Mumbai 400 094, India
- Homi Bhabha National Institute, Mumbai 400 094, India.
| | - Brindaban Modak
- Homi Bhabha National Institute, Mumbai 400 094, India.
- Theoretical Chemistry Section, Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - A Arya
- Homi Bhabha National Institute, Mumbai 400 094, India.
- Glass & Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
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Senthamilan S, Aggarwal A, Grewal S, Rani S, Vats P, Pal P, Jaswal S, Arya A, Alhussien MN. Pre-treatment but not co-treatment with vitexin alleviates hyperthermia induced oxidative stress and inflammation in buffalo mammary epithelial cells. J Reprod Immunol 2023; 158:103979. [PMID: 37348446 DOI: 10.1016/j.jri.2023.103979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/28/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023]
Abstract
This study investigated if in vitro supplementation of vitexin could mitigate the adverse effects of hyperthermia on buffalo mammary epithelial cells (BuMECs). Immortalized BuMECs were divided into seven groups (n = 3): (1) a negative control group at 37 °C; (2) BuMECs exposed to heat stress as a positive control at 42 °C for 1 h; (3-7) heat stressed BuMECs pre-treated or co-treated with different concentrations of vitexin (5 μM, 10 μM, 20 μM, 50 μM, and 100 μM), respectively. Hyperthermia was induced by exposing the cells to 42 ºC for 1 h. For the pre-treatment experiment, BuMECs were treated with vitexin for 2 h before hyperthermia exposure. For co-treatment, vitexin was added simultaneously with hyperthermia for 1 h. Subsequently, the cells were allowed to recover for 12 h at 37 °C. Results showed that pre-treatment with vitexin was more effective than co-treatment in protecting BuMECs from hyperthermia in a dose-dependent manner, with higher concentrations (50 μM and 100 μM) being the most effective. Pre-treatment with vitexin maintained cellular viability and prevented inflammation by inducing the expression of the anti-apoptotic gene (BCL-2) and reducing the expression of the pro-apoptotic gene (Bax) and pro-inflammatory mediators (IL-1β, IL-6) in heat-stressed BuMECs. Pre-treatment with vitexin reduced oxidative stress and induced thermotolerance by increasing the expression of antioxidants mediators such as SOD, GPx and CAT at mRNA and protein levels, and modulating the expression of heat shock proteins. The findings suggest that vitexin has the potential as a therapeutic agent to protect the mammary gland from the negative impact of hyperthermia in dairy cows.
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Affiliation(s)
- S Senthamilan
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Anjali Aggarwal
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Sonika Grewal
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India; Krishi Vigyan Kendra, Baghpat, S.V.P. University of Agriculture & Technology, Meerut, Uttar Pradesh 250110, India.
| | - Sarita Rani
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Preeti Vats
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Prasanna Pal
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India
| | - Shalini Jaswal
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India; Depatment of Virology, PGIMER, Chandigarh 160012, India
| | - Ashwani Arya
- CH. Shivnath Singh Shandilya (P.G.) College, Machhra, Meerut, Uttar Pradesh 250106, India
| | - Mohanned Naif Alhussien
- Animal Physiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India; Reproductive Biotechnology, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany.
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Ghosh PS, Arya A. Evidence of vacancy ordered structures in PuO 2-x and AmO 2-x from first-principles calculations. Phys Chem Chem Phys 2023; 25:14117-14125. [PMID: 37161928 DOI: 10.1039/d3cp00971h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A combination of first-principles calculations and cluster expansion method is used to study ordering of oxygen vacancies in PuO2-x and AmO2-x. Vacancy ordered stable/metastable structures of composition Pu8O15 (PuO1.875), Pu6O11 (PuO1.833), Pu8O14 (PuO1.75) and Am10O19 (AmO1.90), Am8O15 (AmO1.875), Am10O18 (AmO1.80), Am8O13 (AmO1.625) are identified in PuO2-x and AmO2-x, respectively, from cluster expansion calculations. A comparison of formation enthalpies of vacancy ordered and vacancy disordered structures shows that Am8O15 (AmO1.875) and Am8O13 (AmO1.625) are more stable by 52 and 55 meV per atom, respectively, compared to their disordered counterparts. Similarly, vacancy ordered Pu8O15 (PuO1.875) and Pu8O14 (PuO1.75) structures are more stable compared to the disordered structures by 10 and 8 meV per atom, respectively. In contrast, the disordered PuO1.625 structure is more stable compared to the cluster expansion generated structures. The vacancy ordered structures are mechanically stable and their bulk modulus, Young's modulus, shear modulus and Poisson's ratio are reported.
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Affiliation(s)
- P S Ghosh
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - A Arya
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
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Arya A, Chahal R, Almutairi MH, Kaushik D, Aleya L, Kamel M, Abdel-Daim MM, Mittal V. Green approach for the recovery of secondary metabolites from the roots of Nardostachys Jatamansi (D. Don) DC using microwave radiations: Process optimization and anti-alzheimer evaluation. Front Plant Sci 2022; 13:987986. [PMID: 36388547 PMCID: PMC9664055 DOI: 10.3389/fpls.2022.987986] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Nardostachys jatamansi (D. Don) DC is a highly valued medicinal herb that has been used in traditional medicinal systems for its remedial effects. Owing to the over-exploitation and unethical trade of N. jatamansi, the accelerating global demand of herbal products from this plant cannot be satisfied by the conventional extraction approach. In view of the progressive demand and incredible biological potential of herb, the present research was designed to optimize various extraction parameters for microwave-assisted extraction (MAE). The extracts obtained from the traditional and green approach were also assessed for the recovery of secondary metabolites and anti-Alzheimer's potential. Various parameters like microwave power, temperature, and time of irradiation were optimized for MAE using Box Behkhen Design (BBD) The scanning electron microscopy of different plant samples was also done to observe the effect of microwave radiations. Further, the metabolite profiling of different extracts was also done by gas chromatography-mass spectrometry (GC-MS) analysis. Also the different behavioral and biochemical parameters along with acetylcholinesterase (AChE) inhibitory potential were assessed to evaluate the anti-Alzheimer's potential. Optimized parameters for MAE were found to be as microwave power 187.04 W, temperature 90°C, and irradiation time 20 min. The extract yield in MAE was significantly enhanced as compared to the conventional method. Also, the total phenolic content and total flavonoid content (TFC) were improved pointedly from 32.13 ± 0.55 to 72.83 ± 1.1 mg of GAE/g of extract and 21.7 ± 0.85 to 39.21 ± 0.7 mg of RUE/g of extract respectively. Later, the GC-MS analysis of various extracts confirmed the enhancement in the concentration of various sesquiterpenes like jatamansone, spirojatamol, valerenal, valeric acid, globulol, nootkatone and steroidal compounds such as sitosterol, ergosterol, stigmastanone, etc. in the optimized extract. A significant improvement in anti-Alzheimer's potential was also observed owing to the better concentration of secondary metabolites in the optimized microwave extract. From the current findings, it could be concluded that the MAE could be a successful and green alternative for the extraction and recovery of secondary metabolites from the selected medicinal herb.
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Affiliation(s)
- Ashwani Arya
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Rubal Chahal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Mikhlid H. Almutairi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Lotfi Aleya
- Chrono-Environnement Laboratory, UMR CNRS 6249, Bourgogne, Franche-Comté University, CEDEX, Besançon, France
| | - Mohamed Kamel
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed M. Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
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Arya A, Mittal V, Kaushik D, Kumar M, Alotaibi SS, Albogami SM, El-Saber Batiha G, Jeandet P. Mutivariate optimization strategy for the sonication-based extraction of Nardostachys jatamansi roots and analysis for chemical composition, anti-oxidant and acetylcholinesterase inhibitory potential. Ultrason Sonochem 2022; 89:106133. [PMID: 36037596 PMCID: PMC9436804 DOI: 10.1016/j.ultsonch.2022.106133] [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] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Extracts from medicinal plants are generally obtained by conventional methods like percolation and maceration. Owing to limitations of traditional methods and to meet the rising demand of extracts, the development of new green approaches is need of hour. In the present research, we have developed an ultrasound-assisted extraction (UAE) method for the Nardostachys jatamansi (NJ) D. Don, DC roots and optimized the extraction parameters for possible improved extract yield. A multivariate optimization strategy using the Centre Composite Design coupled with response surface methodology was applied. A numerical optimization approach accurately predicted the extraction conditions (sonication time ∼ 20 min, ethanol ∼ 70 % and a liquid/solid ratio of about 21:1). Scanning electron microscopy of the plant samples after UAE also indicated the cavitation effect due to sound waves. GC-MS analysis of the optimized ultrasound extract (OUNJ) confirmed improvement in the concentration of various secondary metabolites like jatamansone (91.8 % increase), spirojatamol (42.3 % increase), globulol (130.4 % increase), sitosterol (84.6 % increase) as compared to the soxhlet extract (SXNJ). Different anti-oxidant parameters (DPPH, Glutathione, Catalase SOD and NO) were also significantly altered (p < 0.05) in the optimized extracts. The IC50 to inhibit acetylcholinesterase activity (AChE) in vitro and its concentration in brain homogenates were significantly (p < 0.05) improved by OUNJ extract as compared to the SXNJ ones. To conclude, we can say that established optimized conditions for UAE of N. jatamansi roots not only reduce the extraction time but also improved the pharmacological potential of the extracts.
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Affiliation(s)
- Ashwani Arya
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Manish Kumar
- M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana (133207), Ambala, Haryana, India
| | - Saqer S Alotaibi
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, Saudi Arabia
| | - Sarah M Albogami
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif, Saudi Arabia
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, AlBeheira, Egypt
| | - Philippe Jeandet
- University of Reims, Research Unit-Induced Resistance and Plant Bioprotection, EA 4707 - USC INRAe 1488, SFR Condorcet FR CNRS 3417, 51687 Reims, France.
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Grewal S, Aggarwal A, Vats P, Rani S, Jaswal S, Pal P, Senthamilan S, Arya A, Mohanty AK, Alhussien MN. Curcumin induces thermotolerance by reducing oxidative stress, apoptosis, and inflammation in buffalo mammary epithelial cells under heat shock conditions. J Reprod Immunol 2022; 153:103684. [DOI: 10.1016/j.jri.2022.103684] [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: 01/04/2022] [Revised: 07/20/2022] [Accepted: 08/01/2022] [Indexed: 10/16/2022]
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Koutalas E, Intzes S, Zagoridis K, Symeonidou M, Spanoudakis E, Arya A, Dinov B, Dagres N, Hindricks G, Bollmann A, Kanoupakis E, Kochiadakis G, Nedios S. P-wave duration and atrial fibrillation recurrence after catheter ablation, a systematic review and meta-analysis. Europace 2022. [DOI: 10.1093/europace/euac053.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Atrial fibrillation (AF) is a global health problem with high morbidity and mortality. Catheter ablation (CA) can reduce AF burden and symptoms, but AF recurrence (AFr) remains an issue. Simple AFr predictors like P-wave duration (PWD) could help improve AF therapy.
Purpose
This updated meta-analysis reviews the increasing evidence for the association of AFr with PWD and offers practical implications.
Methods
Publication databases were systematically searched and cohort studies reporting PWD and/or morphology at baseline and AFr after CA were included. Complete interatrial block (cIAB) was defined as PWD≥120 ms and biphasic morphology in inferior leads. Random-effects analysis was performed using the Review Manager 5.3 and R programs after study selection, quality assessment and data extraction, to report odds ratio (OR) and confidence intervals (CI).
Results
Among 4175 patients in 22 studies, 1138 (27%) experienced AFr. Patients with AFr had longer PWD with a mean pooled difference of 7.8 ms (19 studies, p<0.001)(Figure 1). Pooled OR was 2.04 (1.16-3.58) for PWD>120 ms (13 studies, p=0.01), 2.42 (1.12-5.21) for PWD>140 ms (2 studies, p=0.02), 3.97 (1.79-8.85) for cIAB (6 studies, p<0.001) and 10.89 (4.53-26.15) for PWD>150 ms (2 studies, p<0.001)(Figure 2). There was significant heterogeneity but no publication bias detected.
Conclusion
PWD is an independent predictor for AF recurrence after LA ablation. The AFr risk is increasing exponentially with PWD prolongation. This could facilitate risk-stratification by identifying high-risk patients (cIAB, PWD>150 ms) and adjusting follow-up or interventions.
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Affiliation(s)
- E Koutalas
- University Hospital of Heraklion, Heraklion, Greece
| | - S Intzes
- Democritus University of Thrace, Medical School, Alexandroupolis, Greece
| | - K Zagoridis
- Democritus University of Thrace, Medical School, Alexandroupolis, Greece
| | - M Symeonidou
- Democritus University of Thrace, Medical School, Alexandroupolis, Greece
| | - E Spanoudakis
- Democritus University of Thrace, Medical School, Alexandroupolis, Greece
| | - A Arya
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - B Dinov
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - N Dagres
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - G Hindricks
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - A Bollmann
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - E Kanoupakis
- University Hospital of Heraklion, Heraklion, Greece
| | | | - S Nedios
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
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Nedios S, Seewoester T, Darma A, Dinov B, Hildert S, Lucas J, Doering M, Dagres N, Arya A, Hindricks G, Bollmann A, Richter S. Pacing electrodes to ablate, not to pace: what settings to use to create lesions even deep in the septum. Europace 2022. [DOI: 10.1093/europace/euac053.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Intramural septal ventricular arrhythmia remains challenging, requiring emergent technologies and experimental approaches. Although conduction system pacing (CSP) has allowed us to reach deep in the septum, ablation though pacing electrodes has not been examined yet.
Purpose
To evaluate lesion creation by radiofrequency ablation (RFA) through pacing electrodes.
Methods
A custom ex vivo swine model in a saline bath with an indifferent electrode was used to apply RFA with an 8 mm non-irrigated catheter (SJM, MN, USA) on the proximal end of pacing (CapSureFix 5086) or CSP-electrodes (SelectSecure 3830, Medtronic, MN, USA), screwed in perpendicularly to the slab. A generator (Ampere, SJM, MN, USA) applied RFA at varying settings (1-10 W, 1-20 sec). Lesion depth (D), width (W) and volume (V=3,14*W2*D/4) were assessed and analyzed (SPSS 23).
Results
A total of 80 lesions were used for analysis. Median RFA with 3 W over 6 sec resulted in an impedance drop from 200 to 140 Ω and a lesion of 2x3 mm or 9.4 mm3 (Figure 1). Higher energy settings caused impedance rise with abort (n=3, 4%) or charring (n=3, 4%). Compared to conventional electrodes, lesions with CSP-electrodes had similar volume (9.3±7 vs. 10.8±9 mm3, p=0.45) and width (2±0.8 vs. 2±0.7, p=0.58), but more depth (2.6±0.5 vs. 3±0.6, p=0.0.01). Regression analysis showed final-impedance (FI), power and duration (WS=W*Sec) as independent predictors of lesion volume (V=4.7WS-4.1WS2+4.5FI-4, p<0.001).
Conclusions
Effective ablation through pacing electrodes is possible, but lesion size is limited and low-power settings are necessary. Using CSP-electrodes for effective intramural lesions is possibly a new tool for septal arrhythmias. Further in vivo studies are warranted and bailout use should be considered.
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Affiliation(s)
- S Nedios
- Heart Center of Leipzig, Leipzig, Germany
| | | | - A Darma
- Heart Center of Leipzig, Leipzig, Germany
| | - B Dinov
- Heart Center of Leipzig, Leipzig, Germany
| | - S Hildert
- Heart Center of Leipzig, Leipzig, Germany
| | - J Lucas
- Heart Center of Leipzig, Leipzig, Germany
| | - M Doering
- Heart Center of Leipzig, Leipzig, Germany
| | - N Dagres
- Heart Center of Leipzig, Leipzig, Germany
| | - A Arya
- Heart Center of Leipzig, Leipzig, Germany
| | | | - A Bollmann
- Heart Center of Leipzig, Leipzig, Germany
| | - S Richter
- Heart Center of Leipzig, Leipzig, Germany
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Dinov B, Latuschynski C, Ebbinghaus H, Arya A, Kuehl M, Ueberham L, Hindricks G. Effects of positive endomyocardial biopsy on the survival and the outcomes of catheter ablation of ventricular tachycardia in patients with cardiac sarcoidosis. Europace 2022. [DOI: 10.1093/europace/euac053.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private hospital(s). Main funding source(s): Heart center of Leipzig
Background
Cardiac sarcoidosis (CS) is frequently unrecognized cause of non-ischemic cardiomyopathy associated ventricular tachycardia (VT), who eventually require VT ablations because of refractory VTs; however, the reported long-term outcomes after VT ablation are conflicting. Because of the low diagnostic yield of the endomyocardial biopsy (EMB), diagnosis of CS is often based on clinical and imaging criteria, which can lead to misdiagnosing.
Purpose and objectives
The purpose of this study was to identity whether patients with histologically-proven CS (EMB+) have different patient, procedural characteristics and outcomes after VT ablation as compared to those in whom the diagnosis was based on clinical criteria only (EMB-).
Methods
Between 2015-2021, 153 patients with suspected CS were evaluated according to a specified protocol including CMR, 18FDG-PET, EMB, bronchoscopy and EBUS biopsy, and serum markers. Those who fulfilled the latest criteria for CS of the Japanese Circulation Society (JCS) were divided into 2 groups: EMB (+) CS proven by myocardial biopsy, and EMB (-) CS fulfilling the clinical criteria for CS. The following endpoints were defined: 1) VT recurrence after ablation; and 2) the composite endpoint of death, heart transplantation or LVAD implantation.
Results
We identified 76 patients fulfilling the JCS criteria for CS (mean age 50 ± 10.6 years, 38% female, EMB (+) 35.5%). The leading symptoms were as follows: sustained VT in 23 (30%), high-grade AV block in 23 (30%), heart failure in 18 (24%), and other in 12 pts (16%). EMB (+) and the EMB (-) patients had similar clinical characteristics except for the imaging findings. EMB (+) patients exhibit LGE in CMR in 96% vs. 73% in EMB (-); P=0.024, whereas 18FDG-PET showed abnormal myocardial activity in 91% in the EMB (+) vs. 65% in the EMB (-); P=0.028. The primary composite endpoint was reached in 7.4% in EMB (+) group and in 12.2 % in EMB (-) group; P = 0.7. VT ablation was performed in 15 cases: 9 ablations (33%) in EMB (+) vs. 6 ablations (12%) in EMB (-); P=0.037. At the end of the procedure, all inducible VTs were successfully ablated in 100% of the EMB (-) patients vs. 56% in EMB (+) patients; P=0.1. VT recurrence was 78% in EMB (+) group vs. 67% in EMB (-); P = 0.6. The only procedural difference between the groups was the presence of vast RV low-voltage areas in 67% of the EMB (+) vs. 0% in EMB (-); P = 0.028.
Conclusions
Patients with CS and positive EMB exhibit more often LGE in CMR, abnormal 18FDG-PET activity and required more frequently VT ablation. The procedural characteristics between both groups were similar, except for the frequently observed RV low-voltage areas in most EMB (+) patients, whereas the RV was not affected in any of the EMB (-) patients. In spite of these differences, the VT recurrence rates and the survival seemed not to be affected by the histological evidence of CS in EMB.
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Affiliation(s)
- B Dinov
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
| | - C Latuschynski
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
| | - H Ebbinghaus
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
| | - A Arya
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
| | - M Kuehl
- University Hospital of Coventry and Warwickshire, Coventry, United Kingdom of Great Britain & Northern Ireland
| | - L Ueberham
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
| | - G Hindricks
- University of Leipzig, Heart Center, Department of Electrophysiology, Leipzig, Germany
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Arya A, Kaushik D, Almeer R, Bungau SG, Sayed AA, Abdel-Daim MM, Bhatia S, Mittal V. Application of Green Technologies in Design-Based Extraction of Celastrus paniculatus (Jyotishmati) Seeds, SEM, GC-MS Analysis, and Evaluation for Memory Enhancing Potential. Front Nutr 2022; 9:871183. [PMID: 35662919 PMCID: PMC9158750 DOI: 10.3389/fnut.2022.871183] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/23/2022] [Indexed: 01/09/2023] Open
Abstract
Background The Celastrus paniculatus (CP), commonly known as Jyotishmati, is considered as “elixir of life” by Indian people for the prevention or management of many ailments. The seed powder and its extract have widely used commercially for the preparation of various Ayurvedic formulations for the improvement of memory. CP seeds were generally extracted by conventional extraction methods (CEMs) which are assumed to impact environment burden and also produce low extract yield. Green extraction with possible improvement in extract yield has always been the need of hour for selected medicinal plant. Objective In the present research, we aimed to optimize the different extraction factors in microwave and ultrasound-based extraction. The various extracts obtained in conventional and green methods are also evaluated for the possible improvement in memory enhancing potential. Materials and Methods The selected medicinal herb was extracted by CEM (maceration and percolation). In green methods such microwave-assisted extraction (MAE) and ultrasound assisted-extraction (UAE), various parameters were optimized using Box-Behnken design coupled with response surface methodology. The scanning electron microscopy (SEM) and gas chromatography–mass spectroscopy (GC-MS) analyses were also done to confirm the possible improvement in concentration of plant actives. The Swiss albino mice were used to evaluate memory enhancing potential of different extracts. Results At the optimized conditions MAE and UAE the extraction yield, total phenolic content (TPC) and Total flavonoid content (TFC) are significantly improved. The GC-MS analysis further confirms the improvement in concentration of certain fatty acid esters, pilocarpine, and steroidal compounds in optimized extracts. The optimized extracts also exhibited the significant improvement in behavioral parameters, oxidative stress-induced parameters, and acetylcholinesterase inhibitory potential. Discussion and Conclusion From the results, we can say that the application of green technologies in design-based extraction of selected herb not only significantly reduces the extraction time but also improves the extract yield and concentration of plant actives. In nutshell, it can be concluded that the green approaches for extraction of seeds of Celastrus paniculatus could be scale up at a commercial level to meet the rising demand for herbal extract.
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Affiliation(s)
- Ashwani Arya
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, India
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, India
| | - Rafa Almeer
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Simona G. Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
| | - Amany A. Sayed
- Zoology Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohamed M. Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
- Mohamed M. Abdel-Daim
| | - Saurabh Bhatia
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
- School of Health Science, University of Petroleum and Energy Studies, Dehradun, India
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, India
- *Correspondence: Vineet Mittal
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Gupta S, Arya A, Kumar A, Chaudhary S, Chauhan B, Gupta A. Supraglottic carcinoma with skeletal muscle and multiple bone secondaries. Indian J Med Paediatr Oncol 2022. [DOI: 10.4103/0971-5851.51433] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
AbstractSoft tissue and bone secondaries in supraglottic carcinoma are extremely rare. A 55 year old male presented with history of hoarseness of voice, lump in left side of neck and pain in right shoulder region. Patient underwent Radiotherapy to primary as well as metastatic sites. After 10 months of follow-up, patient presented with distant metastasis to left shoulder, lumbar vertebra and sacrum. This case is being reported on account of its rarity.
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Affiliation(s)
- Surabhi Gupta
- Department of Radiotherapy, S.N.Medical College, Agra, India
| | - A Arya
- Department of Radiotherapy, S.N.Medical College, Agra, India
| | - Anuj Kumar
- Department of Radiotherapy, S.N.Medical College, Agra, India
| | | | | | - Anurag Gupta
- Department of Pathology, S.N.Medical College, Agra, India
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Sajinkumar KS, Arya A, Rajaneesh A, Oommen T, Yunus AP, Rani VR, Avtar R, Thrivikramji KP. Migrating rivers, consequent paleochannels: The unlikely partners and hotspots of flooding. Sci Total Environ 2022; 807:150842. [PMID: 34627899 DOI: 10.1016/j.scitotenv.2021.150842] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/03/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
Furious floods have become an omnipresent reality with the dawn of climate change and its transition to adulthood. Since climate change has now become an accepted reality, analysing the factors that favour or disfavour floods are an urgent requirement. Here we showcase the role of paleochannels, a product of migrating rivers, in a catastrophic flood in the south-western part of the Indian Peninsula. This study exposes whether these geomorphic features facilitate or impede floods. For the purpose of extracting paleochannels and floodwater mapping, we utilized multiple satellite datasets and took advantage of diversified feature selection algorithms. Paleochannels were demarcated viz., initial identification of a few paleochannels from literature and confirmation through high-resolution Google Earth (GE) images, followed by Principal Component Analysis (PCA) of Sentinel-2 images using Google Earth Engine (GEE), and a supervised classification of the principal bands 1, 2, and 3. False-positives were eliminated using Object-Oriented Analysis (OOA), which reduced the 964,254 polygons to 23,254. These polygons were visually affirmed using GE images that resulted in 115 paleochannels as the final collection. A few locations were verified through Vertical Electrical Sounding (VES) using the Schlumberger method. The features were analysed with the floodwaters of the 2018 catastrophic flood, extracted from Synthetic Aperture Radar (SAR) data, which was delineated for different temporal limits including the day of peak flood of August 17, 2018. During the peak flood, the inundation of the study area extended to 534.86 km2 with all the paleochannels getting immersed in floodwater. After 44 days of peak flood, the post-flood analysis revealed that when the floodwater receded 50%, the paleochannels emptied 87.39%, with the midland paleochannels discharging more than those of lowlands. Thus, such geomorphic features can be flood hotspots, but can be considered for discharging floodwater to mitigate flood risk in case of unprecedented rain.
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Affiliation(s)
- K S Sajinkumar
- Department of Geology, University of Kerala, Thiruvananthapuram 695 581, Kerala, India; Department of Geological & Mining Engineering & Sciences, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA.
| | - A Arya
- Department of Geology, University of Kerala, Thiruvananthapuram 695 581, Kerala, India; Pondicherry University, Port Blair, Andaman and Nicobar Islands 744103, India
| | - A Rajaneesh
- Department of Geology, University of Kerala, Thiruvananthapuram 695 581, Kerala, India
| | - T Oommen
- Department of Geological & Mining Engineering & Sciences, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA
| | - Ali P Yunus
- Center for Climate Change Adaptation, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan
| | - V R Rani
- Central Ground Water Board, Thiruvananthapuram 695 004, Kerala, India
| | - Ram Avtar
- Graduate School of Environmental Science, Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan
| | - K P Thrivikramji
- Centre for Environment and Development, Thiruvananthapuram 695013, Kerala, India
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Bharti SK, Pathak V, Alam T, Arya A, Singh VK, Verma AK, Rajkumar V. Starch bio-based composite active edible film functionalized with Carum carvi L. essential oil: antimicrobial, rheological, physic-mechanical and optical attributes. J Food Sci Technol 2022; 59:456-466. [PMID: 35153304 PMCID: PMC8814089 DOI: 10.1007/s13197-021-05028-1] [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] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/31/2020] [Accepted: 02/10/2021] [Indexed: 02/03/2023]
Abstract
In the present study, the antimicrobial, rheological, mechanical, barrier and optical properties of Carrageenan and Manihot esculenta (composite) starch biobased edible film incorporated with caraway (Carum carvi L.) essential oil (EO) were investigated. The Minimum Inhibitory Concentration (MIC) of caraway oil against B. cereus, E. coli, P. aeruginosa and S. aureus were found to be 0.6, 1.4, 1.4 and 0.8% respectively. The Gas Chromatography- Mass Spectroscopy (GC-MS) of caraway EO expressed a distinct chromatogram peak for phenolic compounds. Rheological results of Film-Forming Solution (FFS) revealed solid-like viscoelastic behavior. Incorporation of caraway EO in the film caused significant (P < 0.05) increase in moisture, moisture absorption, bio-degradability in terms of film solubility, L value, total color difference (ΔE), haziness and transparency value, however, significantly (P < 0.05) decreased tensile strength and whiteness index were observed. The zone of inhibition of caraway EO incorporated films against all test bacteria were highly significant (P < 0.01) than control whereas antibacterial activity was found more towards gram-positive bacteria than gram-negative bacteria. No significant (P>0.05) changes in thickness, density, water activity, swelling, elongation at break, water vapor transmission rate, a and b value were observed with increasing caraway EO concentration. These results with some good rheological, physic-mechanical, antimicrobial and optical characteristics suggest the application of such active film into a variety of foods with improved food safety and quality. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13197-021-05028-1.
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Affiliation(s)
- S. K. Bharti
- Department of Livestock Products Technology, College of Veterinary Science and Animal Husbandry, DUVASU, Mathura, Uttar Pradesh 281 001 India
| | - V. Pathak
- Department of Livestock Products Technology, College of Veterinary Science and Animal Husbandry, DUVASU, Mathura, Uttar Pradesh 281 001 India
| | - T. Alam
- Indian Institute of Packaging, an autonomous body under aegis of Ministry of Commerce and Industry, Government of India, Delhi, 110 092 India
| | - A. Arya
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, GBPUAT, Pantnagar, Uttarakhand 263 145 India
| | - V. K. Singh
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, DUVASU, Mathura, Uttar Pradesh 281 001 India
| | - A. K. Verma
- Goat Products Technology Laboratory, Central Institute for Research on Goats, Makhdoom Farah-281 122, Mathura, Uttar Pradesh India
| | - V. Rajkumar
- Goat Products Technology Laboratory, Central Institute for Research on Goats, Makhdoom Farah-281 122, Mathura, Uttar Pradesh India
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Guha RP, Dhall M, Lather P, Singh K, Kadian R, Arya A. Understanding the Pathophysiology of Tourette’s Syndrome: A Review. JPRI 2021. [DOI: 10.9734/jpri/2021/v33i46a32840] [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: 11/09/2022]
Abstract
Tourette’s syndrome (TS) is a neuropsychiatric and neurodevelopment disease typified by deterioration of motor and vocal tics which leads to neuropsychiatric symptoms and impaired motor activities manifestation. Several lines of study indicate the interplay of genetic and environmental factors to be involved in this complex neuropsychiatric syndrome. Approximately 1% people are affected worldwide from this syndrome. In this review, a concise outline presented on the classification, its clinical features and neuropsychiatric co-morbidities linked with this syndrome. This paper also highlights the neurochemistry, dysfunction of (Cortioc-Striato-Thalamo-Cortical) CSTC circuits in TS and an overview on the management approach towards the prevention of TS. Regardless of the major improvements in the understanding of exact cellular and molecular basis of TS, the various evidence indicate that the various neurotransmitter such as dopamine, glutamate, gamma- aminobutyric acid (GABA), serotonin, noradrenergic, cholinergic system, serotonergic system and histaminergic pathways play a major role in pathogenesis of TS. Several research indicates that the dysfunction of CSTS circuits occurred in this complex syndrome These areas of research have contributed to the therapeutic approach towards the management of TS and also provide the basis for future progress of the therapeutic strategies. Thus, tics generated in TS, which affect the social and academic life of patients and disruptive or troubling the family of patients. Patients existing with this syndrome have to face difficulties integrating into social life and coping with day to day basis activities, as a consequence of the syndrome.
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Jinadu T, Dowd R, Bradley L, Painter E, Hughes S, Ahmad S, Khan N, Khanra D, Arya A, Selvakumar V, Spencer C, Petkar S. Observations during the COVID-19 pandemic in chronic heart failure patients with complex devices in a tertiary care cardiac centre using the HeartLogic software. Europace 2021. [PMCID: PMC8194883 DOI: 10.1093/europace/euab116.474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Funding Acknowledgements Type of funding sources: None. Introduction Decompensation of heart failure leading (HF) to hospitalisation is the single most important drain on healthcare resources when managing patients with left ventricular systolic dysfunction. Cardiac resynchronisation therapy with/without defibrillators (CRT-P/D) decreases hospitalisation due to HF and improves survival while implantable cardiac defibrillators (ICD"s) have a favourable effect on the former. Proprietary software algorithms embedded in these complex devices give an early warning to clinicians when decompensation of HF is imminent allowing preventative action to be undertaken. HeartLogic (HL) is one such new algorithm in Boston Scientific CRT-D/ICD devices using multiple sensors to track 5 physiological parameters, combining them into one composite Index, with an Alert being triggered if the Index is >16. The COVID-19 pandemic, due to multiple reasons, resulted in a significant decrease in availability of routine HF services in the United Kingdom, especially during the initial lockdown period from 23rd March to 1st July 2020. Aim To assess the impact of the COVID-19 pandemic, using HL, in patients with HF and complex devices. Materials and Methods Retrospective analysis of patients in a tertiary care cardiac centre in whom the HL software had been activated in March/April 2019 (n = 49) and comparison of those with (Group A n = 21) and without (Group B n = 28) an Alert (HLA) during the COVID-19 pandemic. Results (Table): Whole cohort n = 49. Age: 72 ± 12 years, Median: 75, Range: 36-95. 36/49 (73.5%) males. Type of device implanted: Resonate X4 CRT-D: 28/49 (57.1%); Momentum CRT-D: 8/49 (16.3%); Resonate ICD: 13/49 (26.5%). Ischaemic aetiology of HF: 35/49 (71.4%), Total duration of HL monitoring: 632 ± 7 days (median: 632; range: 626-672). There was no difference in the age, gender, and type of device implanted between Group A and Group B. Over nearly ∼1 year of monitoring in each of the groups, Group A had more unstable HF with 10/21 (47.6%) having their first HLA during the pandemic. Multiple HLA"s, longer period in HLA and those with ischaemic aetiology of HF were higher in Group A. 17/40 (42.5%) HLA"s in Group A were within the first lockdown period (March - July). 24/28 (85.7%) patients in Group B had no HLA"s either before or during the pandemic. There was no difference in the HLA score between Groups A and B. Conclusion In this limited group of patients with a medium term follow-up, using the HeartLogic software, patients with ischaemic aetiology of HF and those with more HLA"s prior to the pandemic did worse than those who no HLA"s. First HLA"s, multiple alerts and longer duration of alerts in this group of patients suggests a lack of access to adequate HF services during the pandemic. It has implications with regard to how HF services are configured in future whenever resources are constrained.
Abstract Figure. ![]()
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Affiliation(s)
- T Jinadu
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - R Dowd
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - L Bradley
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - E Painter
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - S Hughes
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - S Ahmad
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - N Khan
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - D Khanra
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - A Arya
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - V Selvakumar
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - C Spencer
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
| | - S Petkar
- New Cross Hospital, Wolverhampton, United Kingdom of Great Britain & Northern Ireland
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Ghosh PS, Arya A, Basak CB, Poswal AK, Banerjee S. Chemical ordering as a precursor to formation of ordered δ-UZr 2phase: a theoretical and experimental study. J Phys Condens Matter 2021; 33:254003. [PMID: 33765664 DOI: 10.1088/1361-648x/abf20b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
A combination of special quasi-random structure (SQS) analysis, density functional theory (DFT) based simulations and experimental techniques are employed in determining the transformation pathway for the disorderedγ-(U, Zr) phase (bcc structure) to transform into the chemically orderedδ-UZr2phase (C32, AlB2type structure). A novel Monte-Carlo based strategy is developed to generate SQS structures to study theβ→ωdisplacive phase transformation in A1-xBxbinary random alloy. Structures generated with this strategy and using DFT calculations, it is determined that (222)bccplane collapse mechanism is energetically unfavorable in chemically disordered environment at UZr2composition. A mechanically and dynamically stable 24 atom SQS structure is derived which serves as a structural model of chemically orderedδ-UZr2structure. Finally, a thermodynamic basis for the mechanism of theγtoδtransformation has been established which ensures chemical ordering is a precursor to the subsequent displacive transformation to form chemically orderedδ-UZr2structure.
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Affiliation(s)
- P S Ghosh
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - A Arya
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - C B Basak
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A K Poswal
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Banerjee
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
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Arya A, Chahal R, Rao R, Rahman MH, Kaushik D, Akhtar MF, Saleem A, Khalifa SMA, El-Seedi HR, Kamel M, Albadrani GM, Abdel-Daim MM, Mittal V. Acetylcholinesterase Inhibitory Potential of Various Sesquiterpene Analogues for Alzheimer's Disease Therapy. Biomolecules 2021; 11:350. [PMID: 33669097 PMCID: PMC7996600 DOI: 10.3390/biom11030350] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [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: 01/24/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 01/08/2023] Open
Abstract
Alzheimer's disease (AD) is a gradually growing irreversible illness of the brain that almost affects every fifth person (aged > 80 years) in the world. World Health Organization (WHO) also revealed that the prevalence of this disease will enhance (upto double) significantly upto 2030. The poor cholinergic transmission at the synapse is considered to be one of the main reasons behind the progression and occurrence of this disorder. Natural inhibitors of acetylcholine (ACh) such as galanthamine and rivastigmine are used commercially in the treatmentof AD. The biomolecules such assesquiterpenes, possess a great structural diversity and are responsible for a plethora of pharmacological properties. The potential of various sesquiterpenes as anticholinesterase has been reviewed in this article. For this purpose, the various databases, mainly PubMed, Scopus, and Web of Science were investigatedwith different keywords such as "sesquiterpenes+acetylcholinesterase" and "sesquiterpenes+cholinesterase+inhibitors" in the surveyed time frame (2010-2020). A vast literature was evident in the last decade, which affirms the potential of various sesquiterpenes in the improvement of cholinergic transmission by inhibiting the AChE. After data analysis, it was found that 12 compounds out of a total of 58 sesquiterpenes were reported to possess IC50 < 9μM and can be considered as potential candidates for the improvement of learning and memory. Sesquiterpene is an important category of terpenoids, found to possess a large spectrum of biological activities. The outcome of the review clearly states that sesquiterpenes (such as amberboin, lipidiol,etc) from herbs could offer fresh, functional compounds for possible prevention and treatment of AD.
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Affiliation(s)
- Ashwani Arya
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana-124001, India
| | - Rubal Chahal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana-124001, India
| | - Rekha Rao
- Department of Pharmaceutical Sciences, Guru Jambeshwar University of Science & Technology, Hisar, Haryana-125001, India
| | - Md Habibur Rahman
- Department of Pharmacy, Southeast University, Banani, Dhaka-1213, Bangladesh
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26384, Korea
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana-124001, India
| | - Muhammad Furqan Akhtar
- Riphah Institute of Pharmaceutical Sciences, Lahore Campus, Riphah International University, Lahore 54000, Pakistan
| | - Ammara Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shaden M A Khalifa
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, S-106 91 Stockholm, Sweden
| | - Hesham R El-Seedi
- Pharmacognosy Group, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Box 574, 751 23 Uppsala, Sweden
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt
| | - Mohamed Kamel
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Ghadeer M Albadrani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11474, Saudi Arabia
| | - Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana-124001, India
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Arya A, Chahal R, Nanda A, Kaushik D, Bin-Jumah M, Rahman MH, Abdel-Daim MM, Mittal V. Statistically Designed Extraction of Herbs Using Ultrasound Waves: A Review. Curr Pharm Des 2021; 27:3638-3655. [PMID: 33618641 DOI: 10.2174/1381612827666210222114441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/25/2020] [Accepted: 01/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Extraction is the foremost step to isolate the natural constituents from a medicinal plant and leads the process of development of herbal formulation from bench to bed. INTRODUCTION In the field of extraction, the optimization approach helps in achieving better yield and quality where a response of concern is determined or influenced by various variables. This review aimed at congregating the application of different statistical designs (CCD/BBD) to optimize the Ultrasound assisted extraction (UAE) parameters for the recovery of various plant actives belonging to different categories. METHODOLOGY The literature published during last decade in the various reputed databases (Web of Science, Pubmed, Scopus) was reviewed and compiled to reveal the role of response surface methodology in optimizing the influential parameters involved in the ultrasound assisted extraction of herbs. CONCLUSION From the present investigations, it can be concluded that the different variables such as sonication power, temperature, time, solute to solvent ratio are generally optimized in UAE of herbs. Moreover, it has also been evidenced from the review of published data that the flavonoids/phenolic acids (>50%) leads the race for the extraction of plants using sound waves. It can be said that the statistically designed UAE has vast prospective in bringing about a green mutiny in herbal drug industry and the modeling of various parameters shall be able to absolutely build up a complete drug innovation course (bench to bed).
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Affiliation(s)
- Ashwani Arya
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak , Haryana. India
| | - Rubal Chahal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak , Haryana. India
| | - Arun Nanda
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak , Haryana. India
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak , Haryana. India
| | - May Bin-Jumah
- Biology Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh. Saudi Arabia
| | - Md Habibur Rahman
- Department of Pharmacy, Southeast University, Banani, Dhaka-1213. Bangladesh
| | - Mohamed M Abdel-Daim
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451. Saudi Arabia
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak , Haryana. India
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Khanra D, Hamid A, Abdullah A, Thomson J, Khan N, Panchal G, Velu S, Arya A, Barr C, Spencer C, Petkar S. A real-world single tertiary care centre experience of subcutaneous and transvenous implantable cardioverter defibrillator implantation: A comparison with the results of PRAETORIAN study. Indian Pacing Electrophysiol J 2021. [DOI: 10.1016/j.ipej.2020.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Banik S, Arya A, Sinha AK. Direct hybridization gap from intersite and onsite electronic interactions in CeAg 2Ge 2. RSC Adv 2020; 10:24343-24351. [PMID: 35516211 PMCID: PMC9055078 DOI: 10.1039/d0ra03454a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/29/2020] [Indexed: 11/21/2022] Open
Abstract
Electronic and crystal structure studies are presented to describe the role of intersite and onsite interactions for antiferromagnetic ordering in CeAg2Ge2. The crystal structure showed a prominent magnetovolume effect with anomalous negative thermal expansion at low temperature as a consequence of itinerant electron magnetism. The direct hybridization gap with a V-shaped band observed in the angle resolved photoemission data at room temperature, indicates that spin polarized quasiparticle states exist in the gapped region. Valence band broadening and enhanced localization effects at low temperature indicate strong hybridization of the valence orbitals of Ce atoms with the near neighbor Ge atoms. We find that the intersite interaction between the Ce atoms at high temperature stabilizes the onsite interaction at low temperature that leads to the spin density wave type antiferromagnetism in CeAg2Ge2.
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Affiliation(s)
- Soma Banik
- Synchrotron Utilization Section, Raja Ramanna Centre for Advanced Technology Indore 452013 India
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
| | - A Arya
- Glass and Advanced Materials Division, Bhabha Atomic Research Centre Mumbai 400085 India
| | - A K Sinha
- Synchrotron Utilization Section, Raja Ramanna Centre for Advanced Technology Indore 452013 India
- Homi Bhabha National Institute, Training School Complex Anushakti Nagar Mumbai 400094 India
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21
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Abstract
The structural, thermodynamic, electronic, and elastic properties of Th1-xUxO2 and Th1-xPuxO2 mixed oxides (MOX) have been calculated with Hubbard corrected density functional theory (DFT+U) to account for the strong 5f electron correlations. The ideal solid solution is approximated by special quasi-random structures and the U-ramping method is used to account for the presence of metastable states in the self-consistent field solution of the DFT+U approach. The mixing enthalpy (ΔHmix) is positive throughout the composition range of the Th1-xUxO2 MOX, consistent with a simple miscibility gap (at low temperature) phase diagram. The behavior of the Th1-xPuxO2 MOX is more complex, where ΔHmix is positive in the ThO2-rich region and negative in the PuO2-rich region. Electronic structure analysis shows that substitution of Th by U/Pu in ThO2 leads to a reduction of the average Th-O bond lengths, causing distortion in the crystal structure. The distortion in the crystal structure results in an increase in the conduction bandwidth and a reduction of the band-gap in the MOX. Good agreement of our DFT+U calculated elastic properties of ThO2, UO2 and PuO2 compounds with experiments leads to convincing prediction of these properties for Th1-xUxO2 and Th1-xPuxO2 MOX.
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Affiliation(s)
- P S Ghosh
- Glass & Advanced Materials Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
| | - A Arya
- Glass & Advanced Materials Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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22
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Bharti SK, Pathak V, Alam T, Arya A, Basak G, Awasthi MG. Materiality of Edible Film Packaging in Muscle Foods: A Worthwhile Conception. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s41783-020-00087-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractMuscle foods are extremely extensive food products that are relished throughout the world. They are known for their exclusive nutritional content and bio-availability however, at the same time, they also provide apposite media for the growth of pathogenic and spoilage microorganisms. Packaging seems to be a substantial approach to overcome this problem, but most of the packaging involves the usage of non-biodegradable and non-renewable material like plastic, nylon, polyester, etc. The alarming situation caused by synthetic material has been realized worldwide and several scientists, agencies, and the food industry are working globally to explore materials that are derived from the natural source. Biodegradable films are an excellent alternative to conventional plastics. These biodegradable films and coatings are derived from various biological sources and are receiving considerable importance in recent years. Different meat and meat product needs specific packaging condition and these active, composite bio-based films are having a wide potential in the meat sector. This review gathers the research and findings over the period of time-related to biodegradable edible film applied to muscle foods.
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23
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Ghosh PS, Arya A. First-principles study of phase stability, electronic and mechanical properties of plutonium sub-oxides. Phys Chem Chem Phys 2019; 21:16818-16829. [PMID: 31334519 DOI: 10.1039/c9cp01858a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation energies (ΔHf) of fluorite PuO2, α-Pu2O3 and sub-oxides PuO2-x (0.0 < x < 0.5) are determined from atomic scale simulations based on density functional theory (DFT) employing the generalised gradient approximation (GGA) corrected with an effective Hubbard parameter (Ueff). The variation of structural and electronic properties of PuO2 and α-Pu2O3 is determined while ramping up Ueff from 0 eV to 5 eV (Ueff-ramping method) to treat the presence of metastable magnetic states and to determine the most suitable Ueff value matching the experiments. The GGA+U calculated lattice parameter variation as a function of stoichiometry (a(x)) for PuO2-x shows a positive volume of relaxation and an almost linear variation presented by the relation a(x) = a0- 0.522738x, where a0 is the equilibrium lattice parameter of PuO2. The GGA+U calculated ΔHf values of PuO2-x lie above the tie line connecting the ΔHf of PuO2 and Pu2O3, and with decreasing O/Pu ratio, the stability of the sub-oxides increases. The crystal and electronic structure analysis of the oxygen vacancy in PuO2 shows outward anisotropic relaxation of four Pu atoms around the vacancy site. The electronic charges within the Wigner-Seitz sphere around these Pu atoms show an overall gain of only (0.12-0.22)e per Pu atom, signifying an incomplete localization of charges. Finally, the GGA+U calculated single crystal elastic constant values decrease continuously with decreasing O/Pu ratio from 2.0 to 1.5. The rate of decrease of the average C11 is almost 11-15 times higher compared to the rate of decrease of C12 and C44.
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Affiliation(s)
- P S Ghosh
- Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
| | - A Arya
- Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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24
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Schumacher K, Kornej J, Bollmann A, Sommer P, Arya A, Husser D, Potpara T, Lip G, Hindricks G. 367Prediction of very late arrhythmia recurrence after catheter ablation in patients with atrial fibrillation using APPLE and MB-LATER scores: the Leipzig AF ablation registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Schumacher
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - J Kornej
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - A Bollmann
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - P Sommer
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - A Arya
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - D Husser
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - T Potpara
- Clinical center of Serbia, Cardiology Clinic, Belgrade, Serbia
| | - G Lip
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - G Hindricks
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
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25
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Buettner P, Trieb M, Marsche G, Hindricks G, Arya A, Sommer P, Dinov B, Bollmann A, Husser D, Kornej J. P310HDL-function in atrial fibrillation. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- P Buettner
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - M Trieb
- Medical University of Graz, Institute for Experimental and Clinical Pharmacology, Graz, Austria
| | - G Marsche
- Medical University of Graz, Institute for Experimental and Clinical Pharmacology, Graz, Austria
| | - G Hindricks
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - A Arya
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - P Sommer
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - B Dinov
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - A Bollmann
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - D Husser
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
| | - J Kornej
- Heart Center of Leipzig, Electrophysiology, Leipzig, Germany
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26
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Abstract
Polymorphic transformations in LaPO4 are investigated as a function of pressure using density functional theory (DFT) based calculations under the generalized gradient approximation. The monazite-type (P21/n) → barite-type (Pbnm) structural transformation is identified at 16.2 GPa and experimentally, no transformation is observed near this pressure. A discontinuity in the pressure-volume relation (of 4.16% volume discontinuity compared to the monazite structure at the same pressure) and unit-cell dimensions is observed around 28 GPa, which matches well with the previous experimental results. The pressure of discontinuity matches the DFT calculated monazite-type (P21/n) → post barite-type (P212121) structural transformation pressure. The equation of state, single crystal elastic constants and phonon dispersion curves of the different polymorphs as a function of pressure are determined. Both the barite-type (Pbnm) and post barite-type (P212121) structures are mechanically and dynamically stable at 27 GPa indicating that the monazite-type (P21/n) → barite-type (Pbnm) phase transformation may be hindered by a kinetic barrier. The phase transformation in monazite-type LaPO4 is driven by a softening of the C25 single crystal elastic constant. Moreover, a small displacement and tilting of PO4 tetrahedra as a function of pressure leads to a change in the La chemical environment and creates space for the construction of LaO12 polyhedra from LaO9 due to a phase transformation.
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Affiliation(s)
- P S Ghosh
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
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27
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Weber A, Bertagnolli L, Dinov B, Sommer P, Bollmann A, Hindricks G, Arya A. P295Safety of epicardial ablation of ventricular tachykardia: A large single center experience. Europace 2018. [DOI: 10.1093/europace/euy015.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Weber
- Heart Center of Leipzig, Leipzig, Germany
| | | | - B Dinov
- Heart Center of Leipzig, Leipzig, Germany
| | - P Sommer
- Heart Center of Leipzig, Leipzig, Germany
| | - A Bollmann
- Heart Center of Leipzig, Leipzig, Germany
| | | | - A Arya
- Heart Center of Leipzig, Leipzig, Germany
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28
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Koenig S, Boudriot E, Thiele H, Arya A, Hindricks G, Dinov B. P790Sustained ventricular tachycardia as early complication after percutaneous coronary intervention for chronic total occlusion. Europace 2018. [DOI: 10.1093/europace/euy015.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Koenig
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - E Boudriot
- Heart Center of Leipzig, Department of Cardiology, Leipzig, Germany
| | - H Thiele
- Heart Center of Leipzig, Department of Cardiology, Leipzig, Germany
| | - A Arya
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - G Hindricks
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
| | - B Dinov
- Heart Center of Leipzig, Department of Electrophysiology, Leipzig, Germany
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29
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Wijnmaalen AP, Ebert M, De Riva Silva M, Trines SA, Arya A, Hindricks G, Zeppenfeld K. 1024Anteroseptal substrate is associated with poor long-term outcome after catheter ablation in patients with non-ischemic dilated cardiomyopathy. Europace 2018. [DOI: 10.1093/europace/euy015.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - M Ebert
- Heart Center of Leipzig, Leipzig, Germany
| | | | - S A Trines
- Leiden University Medical Center, Leiden, Netherlands
| | - A Arya
- Heart Center of Leipzig, Leipzig, Germany
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30
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Bajaj N, Bhatt H, Pandey KK, Poswal HK, Arya A, Ghosh PS, Garg N, Deo MN. Phase transition in metal–organic complex trans-PtCl2(PEt3)2 under pressure: insights into the molecular and crystal structure. CrystEngComm 2018. [DOI: 10.1039/c8ce00433a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular reorientations result in structural phase transition in trans-PtCl2(PEt3)2 under pressure, leading to a hydrogen bond assisted supramolecular architecture.
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Affiliation(s)
- Naini Bajaj
- Homi Bhabha National Institute
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
- High Pressure & Synchrotron Radiation Physics Division
| | - Himal Bhatt
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - K. K. Pandey
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - H. K. Poswal
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - A. Arya
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - N. Garg
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
| | - M. N. Deo
- High Pressure & Synchrotron Radiation Physics Division
- Bhabha Atomic Research Centre
- Mumbai
- India 400085
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31
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Ghosh PS, Kuganathan N, Arya A, Grimes RW. Phase stability, electronic structures and elastic properties of (U,Np)O2 and (Th,Np)O2 mixed oxides. Phys Chem Chem Phys 2018; 20:18707-18717. [DOI: 10.1039/c8cp02414f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Mixing enthalpies (ΔHmix) of U1−xNpxO2 and Th1−xNpxO2 solid solutions are derived from atomic scale simulations based on density functional theory (DFT) employing the generalised gradient approximation corrected with an effective Hubbard parameter (Ueff).
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Affiliation(s)
- P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - N. Kuganathan
- Department of Materials
- Faculty of Engineering
- Imperial College
- London
- UK
| | - A. Arya
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - R. W. Grimes
- Department of Materials
- Faculty of Engineering
- Imperial College
- London
- UK
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32
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Rani P, Kumar A, Vishwanadh B, Ali K, Arya A, Tewari R, Subramaniam A. Liquid like nucleation in free-standing nanoscale films. Nanoscale 2017; 9:12283-12287. [PMID: 28703820 DOI: 10.1039/c7nr03225k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The concept of a critical nucleus size (r*) is of pivotal importance in phase transformations involving nucleation and growth. The current investigation pertains to crystallization in nanoscale thin films and study of the same using high resolution lattice fringe imaging (HRLFI) and finite element simulations. Using the CuZrAl bulk metallic glass system as a model system for this study, we demonstrate a liquid like nucleation behaviour in nanoscale free-standing films upon heating. The r* for the formation of the Cu10Zr7 phase in thin films (of decreasing thickness) approaches that of the r* for the formation of the crystal from a liquid (i.e.). Working in the nucleation dominant regime, we introduce the concept of 'depth sensitive lattice fringe imaging'. The thickness of the film is determined by electron energy loss spectroscopy and the strain energy of the system is computed using finite element computations.
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Affiliation(s)
- Pooja Rani
- Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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33
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Nedios S, Darma A, Richter S, Doering M, Muessigbrodt A, Arya A, Sommer P, Hindricks G, Bollmann A. P5463Cardiac resynchronization therapy in patients with Atrial Fibrillation. Predictors of sinUs rhythm REstoration (CRT-AF PURE). Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5463] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Dörschner M, Bollmann A, Dinov B, Richter S, Döring M, Arya A, Müssigbrodt A, Kircher S, Dagres N, Sommer P, Hindricks G, Bode K. Structured pain management reduces patient discomfort after catheter ablation and rhythm device surgery. Eur J Pain 2017; 21:1723-1731. [DOI: 10.1002/ejp.1084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2017] [Indexed: 01/23/2023]
Affiliation(s)
| | - A. Bollmann
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - B. Dinov
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - S. Richter
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - M. Döring
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - A. Arya
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - A. Müssigbrodt
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - S. Kircher
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - N. Dagres
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - P. Sommer
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - G. Hindricks
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
| | - K. Bode
- Department of Electrophysiology; Heart Center Leipzig; University of Leipzig; Germany
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35
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Banik S, Das PK, Bendounan A, Vobornik I, Arya A, Beaulieu N, Fujii J, Thamizhavel A, Sastry PU, Sinha AK, Phase DM, Deb SK. Giant Rashba effect at the topological surface of PrGe revealing antiferromagnetic spintronics. Sci Rep 2017; 7:4120. [PMID: 28646153 PMCID: PMC5482886 DOI: 10.1038/s41598-017-02401-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 04/11/2017] [Indexed: 11/17/2022] Open
Abstract
Rashba spin-orbit splitting in the magnetic materials opens up a new perspective in the field of spintronics. Here, we report a giant Rashba spin-orbit splitting on the PrGe [010] surface in the paramagnetic phase with Rashba coefficient α R = 5 eVÅ. We find that α R can be tuned in this system as a function of temperature at different magnetic phases. Rashba type spin polarized surface states originates due to the strong hybridization between Pr 4f states with the conduction electrons. Significant changes observed in the spin polarized surface states across the magnetic transitions are due to the competition between Dzyaloshinsky-Moriya interaction and exchange interaction present in this system. Presence of Dzyaloshinsky-Moriya interaction on the topological surface give rise to Saddle point singularity which leads to electron-like and hole-like Rashba spin split bands in the [Formula: see text] and [Formula: see text] directions, respectively. Supporting evidences of Dzyaloshinsky-Moriya interaction have been obtained as anisotropic magnetoresistance with respect to field direction and first-order type hysteresis in the X-ray diffraction measurements. A giant negative magnetoresistance of 43% in the antiferromagnetic phase and tunable Rashba parameter with temperature makes this material a suitable candidate for application in the antiferromagnetic spintronic devices.
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Affiliation(s)
- Soma Banik
- Synchrotrons Utilization Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India.
| | - Pranab Kumar Das
- Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India
- International Centre for Theoretical Physics, Strada Costiera 11, 34100, Trieste, Italy
| | - Azzedine Bendounan
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192, Gif-sur-Yvette Cedex, France
| | - Ivana Vobornik
- Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, in Area Science Park, S.S.14, Km 163.5, I-34149, Trieste, Italy
| | - A Arya
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Nathan Beaulieu
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192, Gif-sur-Yvette Cedex, France
| | - Jun Fujii
- Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, in Area Science Park, S.S.14, Km 163.5, I-34149, Trieste, Italy
| | - A Thamizhavel
- Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India
| | - P U Sastry
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - A K Sinha
- Synchrotrons Utilization Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India
| | - D M Phase
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, India
| | - S K Deb
- Synchrotrons Utilization Section, Raja Ramanna Centre for Advanced Technology, Indore, 452013, India
- Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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36
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Schoene K, Arya A, Jahnke C, Paetsch I, Bollmann A, Hindricks G, Sommer P. 593Rate of pulmonary vein stenosis after radiofrequency ablation referred to mapping system. Europace 2017. [DOI: 10.1093/ehjci/eux143.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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37
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Schoene K, Arya A, Kostelka M, Mohr FW, Misfeld M, Hindricks G, Sommer P, Seeburger J. 1367Acquired pulmonary vein stenosis after radiofrequency ablation: is surgical repair an option? Europace 2017. [DOI: 10.1093/ehjci/eux157.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Kornej J, Hindricks G, Arya A, Sommer P, Husser D, Bollmann A. P915Prediction of rhythm outcomes after catheter ablation of atrial fibrillation in low risk patients with CHA2DS2-VASc score 0-1. Europace 2017. [DOI: 10.1093/ehjci/eux151.097] [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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39
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Nedios S, Dinov B, Dagres N, Sommer N, Doering M, Richter S, Arya A, Bollmann A, Hindricks G, Muessigbrodt A. P1388Characteristics of left atrial remodelling in patients with atrial fibrillation and hypertrophic cardiomyopathy in comparison to patients without hypertrophy. Europace 2017. [DOI: 10.1093/ehjci/eux158.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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40
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Velu S, Pathiraja J, Barr C, Forsey P, Lapper A, Kidd G, Arya A, Petkar S. P1468A wide range of catheter ablations can be safely performed without interrupting novel oral anticoagulants (NOAC's). Europace 2017. [DOI: 10.1093/ehjci/eux158.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nedios S, Darma A, Richter S, Doering M, Muessigbrodt A, Arya A, Sommer P, Hindricks G, Bollmann A. P1449Cardiac Resynchronization Therapy in patients with Atrial Fibrillation. Predictors of sinUs rhythm REstoration (CRT-AF PURE). Europace 2017. [DOI: 10.1093/ehjci/eux158.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Müssigbrodt A, Efimova E, Knopp H, Bertagnolli L, Dagres N, Richter S, Husser D, Bollmann A, Hindricks G, Arya A. Epicardial ablation may not be necessary in all patients with arrhythmogenic right ventricular dysplasia/cardiomyopathy and frequent ventricular tachycardia. Europace 2017; 19:2047. [DOI: 10.1093/europace/eux004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Müssigbrodt A, Weber A, Mandrola J, van Belle Y, Richter S, Döring M, Arya A, Sommer P, Bollmann A, Hindricks G. Excess of exercise increases the risk of atrial fibrillation. Scand J Med Sci Sports 2017; 27:910-917. [PMID: 28090681 DOI: 10.1111/sms.12830] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2016] [Indexed: 01/02/2023]
Abstract
An interesting and still not well-understood example for old medical wisdom "Sola dosis facit venenum" is the increased prevalence of atrial fibrillation (AF) in athletes. Numerous studies have shown a fourfold to eightfold increased risk of AF in athletes compared to the normal population. Analysis of the existing data suggests a dose-dependent effect of exercise. Moderate exercise seems to have a protective effect and decreases the risk of AF, whereas excessive exercise seems to increase the risk of AF. The described cases illustrate clinical manifestations within the spectrum of AF in elderly athletes, that is, exercise-induced AF, vagal AF, chronic AF, and atrial flutter. As the arrhythmia worsened quality of life and exercise capacity in all patients, recovery of sinus rhythm was desired in all described cases. As the atrial disease was advanced on different levels, different treatment regimes were applied. Lifestyle modification and temporary anti-arrhythmic drug therapy could stabilize sinus rhythm in one patient, whereas others needed radiofrequency ablation to achieve a stable sinus rhythm. The patient with the most advanced atrial disease necessitated anti-arrhythmic drug therapy and another left atrial ablation. All described patients remained in sinus rhythm during the long-term follow-up.
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Affiliation(s)
- A Müssigbrodt
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - A Weber
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - J Mandrola
- Baptist Health Louisville, Louisville, KY, USA
| | - Y van Belle
- Centre Hospitalier Universitaire, Liège, Belgium
| | - S Richter
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - M Döring
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - A Arya
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - P Sommer
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - A Bollmann
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
| | - G Hindricks
- Department of Electrophysiology, University of Leipzig, Heart Centre, Leipzig, Germany
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Prabhash K, Patil VM, Noronha V, Joshi A, Agarwala V, Muddu V, Ramaswamy A, Chandrasekharan A, Dhumal S, Juvekar S, Arya A, Bhattacharjee A. Comparison of paclitaxel-cetuximab chemotherapy versus metronomic chemotherapy consisting of methotrexate and celecoxib as palliative chemotherapy in head and neck cancers. Indian J Cancer 2017; 54:20-24. [DOI: 10.4103/ijc.ijc_160_17] [Citation(s) in RCA: 4] [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] [Indexed: 11/04/2022]
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Abstract
This study reports the density functional theory (DFT) and classical molecular dynamics (MD) study of the lattice dynamical, mechanical and anionic transport behaviours of ThO2 in the superionic state. DFT calculations of phonon frequencies were performed at different levels of approximation as a function of isotropic dilation (ε) in the lattice parameter. With the expansion of the lattice parameter, there is a softening of B1u and Eu phonon modes at the X symmetry point of the Brillouin zone. As a result of the nonlinear decrease at the X point, the B1u and Eu phonon modes cross each other at ε = 0.03, which is associated with a sharp increase in the narrow peak of the phonon density of states, signifying a higher occupation and hence a higher coupling of these modes at high temperatures. The mode crossing also indicates anionic conductivity in the 〈001〉 direction leading to occupation of interstitial sites. Moreover, MD and nudged elastic band calculated diffusion barriers indicate that 〈001〉 is the easy direction for anion migration in the normal and superionic states. With a further increase in the lattice parameter, the B1u mode continues to soften and becomes imaginary at a strain (ε) of 0.036 corresponding to a temperature of 3430 K. The calculated temperature variation of single crystal elastic constants shows that the fluorite phase of ThO2 remains elastically stable up to the superionic regime, though the B1u phonon mode is imaginary in that state. This leads to anionic disorder at elevated temperatures. Tracking of anion positions in the superionic state as a function of time in MD simulations suggests a hopping model in which the oxygen ions migrate from one tetrahedral site to another via octahedral interstitial sites.
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Affiliation(s)
- P S Ghosh
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - A Arya
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - G K Dey
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - N Kuganathan
- Department of Materials, Faculty of Engineering, Imperial College, London, SW7 2AZ, UK
| | - R W Grimes
- Department of Materials, Faculty of Engineering, Imperial College, London, SW7 2AZ, UK
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Greulich S, Meloni A, Nazir SA, Stefan Biesbroek P, Arenja N, Kammerlander AA, Sayeed A, Ricci F, Bernhardt P, Meierhofer C, Devos DG, Ruecker B, Burkhardt B, Kamphuis VP, De Lazzari M, Nederend I, Dux-Santoy L, Cavalcante JL, Rosmini S, Liu B, Fent G, Claessen G, Behar J, Oebel S, Baritussio A, Ranjit Arnold J, Kitterer D, Latus J, Henes J, Kurmann R, Gloekler S, Wahl A, Buss S, Katus H, Bobbo M, Lombardi M, Braun N, Alscher M, Sechtem U, Mahrholdt H, Neri M, Preziosi P, Grassedonio E, Schicchi N, Keilberg P, Pulini S, Facchini E, Positano V, Pepe A, Shetye A, Khan JN, Singh A, Kanagala P, Swarbrick D, Gulsin G, Graham-Brown M, Squire I, Gershlick A, McCann GP, Amier RP, Teunissen PF, Robbers LF, Beek AM, van Rossum AC, Hofman MB, van Royen N, Nijveldt R, Riffel JH, Djiokou CN, Andre F, Fritz T, Halder M, Thomas Z, Korosoglou G, Katus HA, Buss SJ, Schwaiger ML, Duca F, Aschauer S, Marzluf BA, Zotter-Tufaro C, Dalos D, Pfaffenberger S, Bonderman D, Mascherbauer J, Fridman Y, Hackman B, Kadakkal A, Maanja M, Daya HA, Wong TC, Schelbert EB, Barison A, Todiere G, Gaeta R, Galllina S, Emdin M, De Caterina R, Aquaro G, Buckert D, Dyckmanns N, Rottbauer W, Kühn A, Shehu N, Müller J, Stern H, Ewert P, Fratz S, Vogt M, De Groote K, Babin D, Demulier L, Taeymans Y, Westenberg JJ, Van Bortel L, Segers P, Achten E, De Schepper J, Rietzschel E, Geiger J, Makki M, Burkhardt B, Kellenberger CJ, Buechel ERV, Kellenberger C, Geiger J, Ruecker B, Buechel EV, Elbaz MS, Kroft LJ, van der Geest RJ, de Roos A, Blom NA, Westenberg JJ, Roest AA, Cipriani A, Susana A, Rizzo S, Giorgi B, Carmelo L, Bertaglia E, Bauce B, Corrado D, Thiene G, Marra MP, Basso C, Iliceto S, Roest A, van den Boogaard P, ten Harkel A, de Geus J, Kroft L, de Roos A, Westenberg J, Kale R, Teixido-Tura G, Maldonado G, Huguet M, Garcia-Dorado D, Evangelista A, Rodriguez-Palomares J, Rijal S, Schindler JT, Gleason TG, Lee JS, Schelbert EB, Bulluck H, Treibel TA, Bhuva A, Abdel-Gadir A, Culotta V, Merghani A, Maestrini V, Herrey AS, Kellman P, Manisty C, Moon JC, Hayer M, Baig S, Shah T, Rooney S, Edwards N, Steeds R, Garg P, Swoboda P, Dobson L, Musa T, Foley J, Haaf P, Greenwood J, Plein S, Schnell F, Bogaert J, Dymarkowski S, Pattyn N, Claus P, Van Cleemput J, Gerche AL, Heidbuchel H, Toth D, Reiml S, Panayiotou M, Claridge S, Jackson T, Sohal M, Webb J, O'Neill M, Brost A, Mountney P, Razavi R, Rhode K, Rinaldi CA, Arya A, Hilbert S, Bollmann A, Hindricks G, Jahnke C, Paetsch I, Dinov B, Perazzolo Marra M, Ghosh Dastidar A, Rodrigues J, Zorzi A, Susana A, Scatteia A, De Garate E, Mattesi G, Strange J, Corrado D, Bucciarelli-Ducci C, Jerosch-Herold M, Karamitsos TD, Francis JM, Bhamra-Ariza P, Sarwar R, Choudhury R, Selvanayagam JB, Neubauer S. ORAL AB AGORA1362Cardiac Involvement in Patients With Different Rheumatic Disorders1366Gender differences in the development of cardiac complications: a multicentric prospective study in a large cohort of thalassemia major patients1646Comparison of T1-mapping, T2-weighted and contrast-enhanced cine imaging at 3.0T CMR for diagnostic oedema assessment in ST-segment elevation myocardial infarction1375Evaluation of Tissue Changes in Remote Noninfarcted Myocardium after Acute Myocardial Infarction using T1-mapping1377Right ventricular long axis strain – The prognostic value of a novel parameter in non-ischemic dilated cardiomyopathy using standard cardiac magnetic resonance imaging1389The role of the right ventricular insertion point in heart failure patients with preserved ejection fraction: Insights from a cardiovascular magnetic resonance study1398Myocardial fibrosis associates with B-type natriuretic peptide levels and outcomes more than wall stress1478Prognostic Value of Pulmonary Blood Volume by Contrast-Enhanced Magnetic Resonance Imaging in Heart Failure Outpatients – The PROVE-HF Study1370Magnetic Resonance Adenosine Perfusion Imaging as Gatekeeper of Invasive Coronary1509Influence of non-invasive hemodynamic CMR parameters on maximal exercise capacity in surgically untreated patients with Ebstein's anomaly1356Proximal aortic stiffening in Turner patients is more pronounced in the presence of a bicuspid valve. A segmental functional MRI study1503Flow pattern and vascular distensibility of the pulmonary arteries in patients after repair of tetralogy of Fallot. Insights from 4D flow CMR1516Myocardial deformation characteristics of the systemic right ventricle after atrial switch operation for transposition of the great arteries1633Three-dimensional vortex formation in patients with a Fontan circulation: evaluation with 4D flow CMR1483Mitral valve prolapse: arrhythmogenic substrates by cardiac magnetic imaging1596Increased local wall shear stress after coarctation repair is associated with descending aorta pulse wave velocity: evaluation with CMR and 4D flow1636Three-dimensional wall shear stress assessed by 4Dflow CMR in bicuspid aortic valve disease1464Cardiac Amyloidosis and Aortic Stenosis – The Convergence of Two Aging Processes1630Blood T1 variability explained in healthy volunteers: an analysis on MOLLI, ShMOLLI and SASHA1408Myocardial deformation on CMR predicts adverse outcomes in carcinoid heart disease - a new marker of risk1492Myocardial Perfusion Reserve and Global Longitudinal Strain in Early Rheumatoid Arthritis1500Exercise CMR to differentiate athlete's heart from patients with early dilated cardiomyopathy1559Real-Time, x-mri guidance to optimise left ventricular lead placement for delivery of cardiac resynchronisation therapy1560The role of Cardiac magnetic resonance imaging in patients undergoing ablation for ventricular tachycardia- Defining the substrate and visualizing the outcome1590Impact of cardiovascular magnetic resonance on clinical management and decision-making of out of hospital cardiac arrest survivors with inconclusive coronary angiogram1561Detection of coronary stenosis at rest using Oxygenation-Sensitive Magnetic Resonance Imaging. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew181] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bashir MA, Arya A. A simple technique for injecting the small joints of the fingers and thumb using finger traps for traction. Ann R Coll Surg Engl 2016; 98:343-4. [PMID: 27087333 DOI: 10.1308/rcsann.2016.0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- M A Bashir
- King's College Hospital NHS Foundation Trust , UK
| | - A Arya
- King's College Hospital NHS Foundation Trust , UK
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Gupta SK, Sudarshan K, Ghosh PS, Sanyal K, Srivastava AP, Arya A, Pujari PK, Kadam RM. Luminescence of undoped and Eu3+ doped nanocrystalline SrWO4 scheelite: time resolved fluorescence complimented by DFT and positron annihilation spectroscopic studies. RSC Adv 2016. [DOI: 10.1039/c5ra23876e] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [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
Effect of annealing temperature on photophysical characteristics of pure and SrWO4:Eu3+ nanoparticles were investigated and the changes observed correlated with density function theory (DFT) and positron annihilation lifetime spectroscopy (PALS).
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - K. Sudarshan
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - P. S. Ghosh
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - K. Sanyal
- Fuel Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - A. P. Srivastava
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - A. Arya
- Materials Science Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - P. K. Pujari
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - R. M. Kadam
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
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Magotra A, Gupta ID, Verma A, Chaudhari MV, Arya A, Vineeth MR, Kumar R, Selvan AS. Characterization and validation of point mutation in exon 19 of CACNA2D1 gene in Karan Fries (Bos taurus x Bos indicus) cattle. INDIAN J ANIM RES 2015. [DOI: 10.0.73.117/ijar.5668"10.18805/ijar.5668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The objective of this study was to characterize and validate the candidate point mutation in Calcium channel, voltage-dependent, alpha-2/ delta subunit 1 (CACNA2D1) gene in Karan Fries (Bos taurus x Bos indicus) cattle. The CACNA2D1 gene reported as one of the potential candidate gene influencing Somatic cell Score and Mastitis. A PCR product of 249 bp amplifying the exon 19 and partial 18 and 19 intronic region of CACNA2D1 gene was digested with Hae III restriction enzyme to screen the reported point mutation. A monomorphic banding pattern with genotype AA was found in Karan Fries cattle. Sequencing was also carried out to characterize and explore insilico screened mutation in the nucleotide sequence of a particular region. The result indicates highly conserved sequence in Karan Fries cattle. The Phylogenetic tree revealed that Karan Fries cattle were closer to Bos taurus cattle, Bos mutus (Yak), and Bison bison (American buffalo) compared to other species.
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Sharma K, Pachauri SD, Khandelwal K, Ahmad H, Arya A, Biala P, Agrawal S, Pandey RR, Srivastava A, Srivastav A, Saxena JK, Dwivedi AK. Anticancer Effects of Extracts from the Fruit of Morinda Citrifolia (Noni) in Breast Cancer Cell Lines. Drug Res (Stuttg) 2015; 66:141-7. [PMID: 26158795 DOI: 10.1055/s-0035-1555804] [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: 10/23/2022]
Abstract
Morinda citrifolia L. (NONI) fruits have been used for thousands of years for the treatment of many health problems including cancer, cold, diabetes, flu, hypertension, and pain. Plant extracts have reported several therapeutic benefits, but extraction of individual compound from the extract often exhibits limited clinical utility as the synergistic effect of various natural ingredients gets lost. They generally constitute polyphenols and flavonoids. Studies have suggested that these phytochemicals, especially polyphenols, display high antioxidant properties, which help to reduce the risk of degenerative diseases, such as cancer and cardiovascular diseases. Several in-vitro and in-vivo studies have shown that Noni fruits have antioxidant, anti-inflammatory, anti-dementia, liver-protective, anticancer, analgesic, and immunomodulatory effects. Till date about 7 in vitro cancer studies have been done, but a detailed in vitro study including cell cycle and caspase activation assay on breast cancer cell line has not been done. In the present study different Noni fruit fractions have tested on cancer cell lines MCF-7, MDA-MB-231 (breast adenocarcinoma) and one non-cancer cell line HEK-293 (Human embryonic kidney). Out of which ethylacetate extract showed a higher order of in vitro anticancer activity profile. The ethylacetate extract strongly inhibited the proliferation of MCF-7, MDA-MB-231 and HEK-293 cell lines with IC50 values of 25, 35, 60 µg/ml respectively. The extract showed increase in apoptotic cells in MCF-7 and MDA-MB-231 cells and arrested the cell cycle in the G1/S phase in MCF-7 and G0/G1 phase in MDA-MB-231 cells. Noni extract also decreases the intracellular ROS generation and mitochondrial membrane potential.
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Affiliation(s)
- K Sharma
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - S D Pachauri
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - K Khandelwal
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - H Ahmad
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - A Arya
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - P Biala
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - S Agrawal
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - R R Pandey
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - A Srivastava
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - A Srivastav
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
| | - J K Saxena
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, India
| | - A K Dwivedi
- Division of Pharmaceutics, CSIR-Central Drug Research Institute, Lucknow, India
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