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Das B, Shamsuzzaman SM, Das TK. Detection of Quinolone resistance Qnr genes and its association with Extended Spectrum β-lactamase and AmpC β-lactamase genes in Qnr Positive Enterobacteriaceae in Bangladesh. Mymensingh Med J 2024; 33:183-191. [PMID: 38163791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
This cross-sectional study was conducted to explore quinolone resistant Enterobacteriaceae followed by searching the prevalence of three groups of quinolone resistance genes (QnrA, QnrB and QnrS) from January 2015 to December 2015 at Dhaka Medical College hospital, Bangladesh. Then genes for ESBL and AmpC β-lactamase were detected among Qnr positive strains for better understanding the role of these genes for multiple drug resistance. Total 340 urines, sputum, wound swab and blood samples were collected from DMCH. Total 270(79.41%) Enterobacteriaceae were isolated from 340 samples. Out of 270 Enterobacteriaceae, 225(83.33%) were quinolone (ciprofloxacin) resistant strains. Qnr genes were detected in 141(62.67%) of the 225 quinolone resistant Enterobacteriaceae. Total 187 Qnr genes [84(59.57%) QnrS, 70(49.64%) QnrB and 33(23.40%) QnrA] were detected from 141 quinolone resistant strains. Total 48(34.04%) ESBL producers were detected by DDS test and 47(33.33%) ESBL producers were positive by PCR among 141 Qnr positive strains. QnrA was co-existed with CTX-M-15. QnrB was co-existed with TEM, CTXM-15 and OXA-1. QnrS genes were also associated with TEM, CTX-M-15 and OXA-1. Among 52 cefoxitin resistant Qnr positive strains, 22(42.31%) AmpC β-lactamase producers were detected by Modified three-dimensional test (MTDT) and 45(86.54%) AmpC β-lactamase producers were detected by PCR. QnrA had been identified with DHA, ACC, EBC and CIT while QnrB had been identified with DHA, ACC, EBC and CIT. QnrS had also been co-existed with DHA, ACC, EBC and CIT. The results of this study provided insights into the high proportion of Qnr genes among isolated Enterobacteriaceae. Simultaneous presence of Qnr genes and genes for extended-spectrum β-lactamase or AmpC β-lactamase were observed in multidrug resistant Enterobacteriaceae.
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Affiliation(s)
- B Das
- Dr Bithi Das, Assistant Professor, Department of Microbiology, National Institute of cardiovascular Diseases, Dhaka, Bangladesh; E-mail:
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Singh RN, Krishnan P, Singh VK, Sah S, Das B. Combining biophysical parameters with thermal and RGB indices using machine learning models for predicting yield in yellow rust affected wheat crop. Sci Rep 2023; 13:18814. [PMID: 37914800 PMCID: PMC10620169 DOI: 10.1038/s41598-023-45682-3] [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: 06/15/2023] [Accepted: 10/23/2023] [Indexed: 11/03/2023] Open
Abstract
Evaluating crop health and forecasting yields in the early stages are crucial for effective crop and market management during periods of biotic stress for both farmers and policymakers. Field experiments were conducted during 2017-18 and 2018-19 with objective to evaluate the effect of yellow rust on various biophysical parameters of 24 wheat cultivars, with varying levels of resistance to yellow rust and to develop machine learning (ML) models with improved accuracy for predicting yield by integrating thermal and RGB indices with crucial plant biophysical parameters. Results revealed that as the level of rust increased, so did the canopy temperature and there was a significant decrease in crop photosynthesis, transpiration, stomatal conductance, leaf area index, membrane stability index, relative leaf water content, and normalized difference vegetation index due to rust, and the reductions were directly correlated with levels of rust severity. The yield reduction in moderate resistant, low resistant and susceptible cultivars as compared to resistant cultivars, varied from 15.9-16.9%, 28.6-34.4% and 59-61.1%, respectively. The ML models were able to provide relatively accurate early yield estimates, with the accuracy increasing as the harvest approached. The yield prediction performance of the different ML models varied with the stage of the crop growth. Based on the validation output of different ML models, Cubist, PLS, and SpikeSlab models were found to be effective in predicting the wheat yield at an early stage (55-60 days after sowing) of crop growth. The KNN, Cubist, SLR, RF, SpikeSlab, XGB, GPR and PLS models were proved to be more useful in predicting the crop yield at the middle stage (70 days after sowing) of the crop, while RF, SpikeSlab, KNN, Cubist, ELNET, GPR, SLR, XGB and MARS models were found good to predict the crop yield at late stage (80 days after sowing). The study quantified the impact of different levels of rust severity on crop biophysical parameters and demonstrated the usefulness of remote sensing and biophysical parameters data integration using machine-learning models for early yield prediction under biotically stressed conditions.
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Affiliation(s)
- R N Singh
- Division of Agricultural Physics, ICAR-Indian Agricultural Research Institute, New Delhi, India
- ICAR-National Institute of Abiotic Stress Management, Pune, Maharashtra, India
| | - P Krishnan
- Division of Agricultural Physics, ICAR-Indian Agricultural Research Institute, New Delhi, India.
| | - Vaibhav K Singh
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Sonam Sah
- ICAR-National Institute of Abiotic Stress Management, Pune, Maharashtra, India
| | - B Das
- ICAR-Central Coastal Agricultural Research Institute, Old Goa, Goa, India
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Yin F, Ahsan F, Pinkas J, Das B, Wang F, Zheng N, Hahn D, Amrite A, Feng J, Adhikari D, Sikora J, Shaheen E, Harriman S. A sensitive LC-MS/MS assay to quantitate free payload Aur0101 from ADC PYX-201 in rat and monkey plasma. Bioanalysis 2023; 15:833-843. [PMID: 37584364 DOI: 10.4155/bio-2023-0056] [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] [Indexed: 08/17/2023] Open
Abstract
Aim: Aur0101 is a cytotoxic and small-molecule microtubule depolymerizing agent, and is the payload conjugated to antibody-drug conjugate PYX-201. Developing and validating a sensitive bioanalytical method to quantitate Aur0101 was novel and crucial in preclinical PYX-201 studies. Materials & methods: Reference standard Aur0101 and its stable isotope labelled internal standard Aur0101-d8 were used in this LC-MS/MS method. Results: This sensitive assay was validated at a lower limit of quantitation of 15 pg/ml and successfully applied to support preclinical rat and monkey toxicology studies. Preclinical plasma toxicokinetic parameters were presented. Conclusion: A sensitive and robust LC-MS/MS assay was validated for Aur0101 in rat and monkey plasma.
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Affiliation(s)
- Feng Yin
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Farah Ahsan
- Q2 Solutions BioSciences LLC, 19 Brown Road, Ithaca, NY 14850, USA
| | - Jan Pinkas
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Biplab Das
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Frank Wang
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Nancy Zheng
- Amador Bioscience, Inc., 4695 Chabot Drive, Pleasanton, CA 94588, USA
| | - David Hahn
- Amador Bioscience, Inc., 4695 Chabot Drive, Pleasanton, CA 94588, USA
| | - Aniruddha Amrite
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Jianwen Feng
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Diana Adhikari
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Jack Sikora
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Elizabeth Shaheen
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Shawn Harriman
- Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
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Das B, Kumar N, Solanki JB, Jadav MM, Kalyani IH. Morphological and molecular characterization of Haemonchus contortus isolated from the small ruminants of south Gujarat, India. Helminthologia 2023; 60:175-188. [PMID: 37745222 PMCID: PMC10516478 DOI: 10.2478/helm-2023-0020] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 05/30/2023] [Indexed: 09/26/2023] Open
Abstract
The successful design of strategic control measures against the blood-sucking gastrointestinal nematode, Haemonchus contortus in small ruminants can be facilitated by revealing its general features from morphology to the molecular level. In the south Gujarat region of India, a total of 2408 H. contortus were collected from 84 slaughtered sheep's abomasum, consisting of 347 males and 2061 females (1:6 ratio) (p<0.05). Furthermore, 726 H. contortus were collected from 61 goats, comprising 145 males and 581 females (1:4 ratio) (p<0.05). The male worms were approximately 12±0.06 mm long, while female worms were about 20±0.09 mm long. The vulvar morphotypes of the female worms were found to be 17.7% linguiform, 76.6 % knobbed/button (p<0.05), and 5.7 % smooth type, demonstrating common features of H. contortus. The nucleotide sequences of the Internal Transcribed Spacer 1 (ITS-1) of 165 bp or ITS-2 plus of 256 bp were aligned, and it was found that the genotypes of male and female specimens of either sheep or goat origin were identical, with a 100 % match. The present isolates shared >95 % and >94 % homology with published sequences of ITS-1 and ITS-2 plus of H. contortus, respectively, with more nucleotide transitions than transversions in the aligned sequences. The reconstructed phylogram of either ITS-1 or ITS-2 plus revealed two major clades, one for H. contortus and another for other nematodes, with Haemonchus placei showing its proximity with the clade of H. contortus. The study established the role of morphological and molecular features in identifying and differentiating H. contortus parasite at the local level.
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Affiliation(s)
- B. Das
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Navsari-396 450, Gujarat, India
| | - N. Kumar
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Navsari-396 450, Gujarat, India
| | - J. B. Solanki
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Navsari-396 450, Gujarat, India
| | - M. M. Jadav
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Navsari-396 450, Gujarat, India
| | - I. H. Kalyani
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Navsari-396 450, Gujarat, India
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Yin F, DeCiantis C, Pinkas J, Das B, Wang F, Zheng N, Hahn D, Amrite A, Feng J, Adhikari D, Kane C, Sikora J, Pittman J, Wates R, Shaheen E, Harriman S. Quantitation of total antibody (tAb) from antibody drug conjugate (ADC) PYX-201 in rat and monkey plasma using an enzyme-linked immunosorbent assay (ELISA) and its application in preclinical studies. J Pharm Biomed Anal 2023; 233:115452. [PMID: 37167766 DOI: 10.1016/j.jpba.2023.115452] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/02/2023] [Accepted: 05/07/2023] [Indexed: 05/13/2023]
Abstract
PYX-201 is an investigative ADC oncology drug composed of a monoclonal human immunoglobulin G (IgG) antibody targeting the extra domain B splice variant of fibronectin (EDB + FN) conjugated to an auristatin payload through a cleavable linker. Effective measurement of PYX-201 tAb is the key to ADC drug PYX-201 preclinical pharmacokinetics (PK) assessment. PYX-201 monoclonal antibody (mAb) was used as the reference standard, goat anti-human IgG polyclonal antibody (pAb) or rabbit anti-human Kappa light chain mAb was employed as the capture antibody, and mouse mAb or goat pAb anti-human IgG the crystallizable fragment (Fc) (horseradish peroxidase (HRP)) was utilized as the detection antibody in this ELISA. This assay was validated with a dynamic range 250 - 10,000 ng/mL and 250 - 6000 ng/mL in rat and monkey K2EDTA plasma, respectively. PYX-201 tAb bioanalytical ELISA assay was reported for the first time in any biological matrix. This is the first time for a bioanalytical method to be validated for a tAb from an ADC drug targeting EDB + FN in any biological matrix.
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Affiliation(s)
- Feng Yin
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Chris DeCiantis
- Department of Biopharma Services, KCAS Bioanalytical and Biomarker Services, 10830 South Clay Blair Boulevard, Olathe, KS 66061, USA
| | - Jan Pinkas
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA.
| | - Biplab Das
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Frank Wang
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Nancy Zheng
- Department of Clinical Pharmacology, Amador Bioscience, Inc., 4695 Chabot Drive, Pleasanton, CA 94588, USA
| | - David Hahn
- Department of Clinical Pharmacology, Amador Bioscience, Inc., 4695 Chabot Drive, Pleasanton, CA 94588, USA
| | - Aniruddha Amrite
- Department of Clinical Pharmacology, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Jianwen Feng
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Diana Adhikari
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Cheikh Kane
- Department of Biopharma Services, KCAS Bioanalytical and Biomarker Services, 10830 South Clay Blair Boulevard, Olathe, KS 66061, USA
| | - Jack Sikora
- Department of Project Management, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Justin Pittman
- Department of Biopharma Services, KCAS Bioanalytical and Biomarker Services, 10830 South Clay Blair Boulevard, Olathe, KS 66061, USA
| | - Rebecca Wates
- Department of Biopharma Services, KCAS Bioanalytical and Biomarker Services, 10830 South Clay Blair Boulevard, Olathe, KS 66061, USA
| | - Elizabeth Shaheen
- Department of Project Management, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA
| | - Shawn Harriman
- Department of Nonclinical Research, Pyxis Oncology, Inc., 321 Harrison Avenue, Suite 1, Boston, MA 02118, USA.
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Singh RN, Krishnan P, Bhardwaj C, Das B. Improving prediction of chickpea wilt severity using machine learning coupled with model combination techniques under field conditions. ECOL INFORM 2023. [DOI: 10.1016/j.ecoinf.2022.101933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Huang WS, Li F, Gong Y, Zhang Y, Youngsaye W, Xu Y, Zhu X, Greenfield MT, Kohlmann A, Taslimi PM, Toms A, Zech SG, Zhou T, Das B, Jang HG, Tugnait M, Ye YE, Gonzalvez F, Baker TE, Nadworny S, Ning Y, Wardwell SD, Zhang S, Gould AE, Hu Y, Lane W, Skene RJ, Zou H, Clackson T, Narasimhan NI, Rivera VM, Dalgarno DC, Shakespeare WC. Discovery of mobocertinib, a potent, oral inhibitor of EGFR exon 20 insertion mutations in non-small cell lung cancer. Bioorg Med Chem Lett 2023; 80:129084. [PMID: 36423823 DOI: 10.1016/j.bmcl.2022.129084] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/17/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
In the treatment of non-small cell lung cancer (NSCLC), patients harboring exon 20 insertion mutations in the epidermal growth factor receptor (EGFR) gene (EGFR) have few effective therapies because this subset of mutants is generally resistant to most currently approved EGFR inhibitors. This report describes the structure-guided design of a novel series of potent, irreversible inhibitors of EGFR exon 20 insertion mutations, including the V769_D770insASV and D770_N771insSVD mutants. Extensive structure-activity relationship (SAR) studies led to the discovery of mobocertinib (compound 21c), which inhibited growth of Ba/F3 cells expressing the ASV insertion with a half-maximal inhibitory concentration of 11 nM and with selectivity over wild-type EGFR. Daily oral administration of mobocertinib induced tumor regression in a Ba/F3 ASV xenograft mouse model at well-tolerated doses. Mobocertinib was approved in September 2021 for the treatment of adult patients with advanced NSCLC with EGFR exon 20 insertion mutations with progression on or after platinum-based chemotherapy.
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Affiliation(s)
- Wei-Sheng Huang
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States.
| | - Feng Li
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yongjin Gong
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yun Zhang
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Willmen Youngsaye
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yongjin Xu
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Xiaotian Zhu
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Matthew T Greenfield
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Anna Kohlmann
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Paul M Taslimi
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Angela Toms
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Stephan G Zech
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Tianjun Zhou
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Biplab Das
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Hyun G Jang
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Meera Tugnait
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yihua E Ye
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Francois Gonzalvez
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Theresa E Baker
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Sara Nadworny
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yaoyu Ning
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Scott D Wardwell
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Sen Zhang
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Alexandra E Gould
- Takeda Development Center Americas, Inc, 95 Hayden Avenue, Lexington, MA 02421, United States
| | - Yongbo Hu
- Takeda Development Center Americas, Inc, 95 Hayden Avenue, Lexington, MA 02421, United States
| | - Weston Lane
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 45 Landsdowne Street, Cambridge, MA 02139, United States
| | - Robert J Skene
- Takeda Development Center Americas, Inc, 95 Hayden Avenue, Lexington, MA 02421, United States
| | - Hua Zou
- Takeda Development Center Americas, Inc, 95 Hayden Avenue, Lexington, MA 02421, United States
| | - Tim Clackson
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Narayana I Narasimhan
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - Victor M Rivera
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - David C Dalgarno
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
| | - William C Shakespeare
- ARIAD Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, 26 Landsdowne Street, Cambridge, MA 02139, United States
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Chahal M, Telsem M, Das B, Patel S, Gadiwala S, Stuart R, Mistry A, Satnarine T, Singla P, Bakarr A, Sharma P, Hsieh YC, Aedma K, Patel S, Pathrose R. Factors Affecting School Performance in the Adolescents of USA- Youth Risk Behavior Surveillance System. Eur Psychiatry 2022. [PMCID: PMC9567321 DOI: 10.1192/j.eurpsy.2022.587] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction Poor academic performance has been linked to factors such as sleep, health, illicit drug use, physical fighting, social media use, cyber bullying, physical activity, homelessness, times spent in video games and television. It is difficult to get a sense of the interplay between and relative importance of different behaviours/factors on academic performance as only limited research has been aimed at quantifying these factors. Objectives To evaluate association of school performance and variables in five categories of the YRBSS: physical fighting, diet/lifestyle, electronic device usage, concurrent substance use, and violence/self-harm. Methods The CDC Youth Risk Behavior Surveillance System (YRBSS) data from 1991-2019 was used in study. Respondents were grouped by good and poor school performance and variables related to nutrition/lifestyle, electronic device use, concurrent substance use, mood/violence/self-harm were analyzed using chi-square
test. Results A total of 41,235 student respondents.Nutrition/Lifestyle, electronic device use, concurrent substance use, mood/violence/self-harm are found to be significantly correlated with school performance. |
Poor Performance n(%) |
Good Performance n(%) |
Total n(%) | p-Value |
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Nutrition/Lifestyle | | Daily breakfast | 2,715(26) | 11,429(38.22) | 14,144(35.06) | <0.0001 | Sodas ≥2/day | 1,998(19.12) | 2,710(9.03) | 4,708(11.63) | <0.0001 | Concurrent Substance Use | | Alcohol use | 3,544(37.55) | 8,067(28.49) | 11,611(30.75) | <0.0001 | Cigarette smoking | 1,616(15.74) | 1,845(6.17) | 3,461(8.61) | <0.0001 | Mood/Violence/Self-Harm | | Difficulty concentrating | 4,188(46.34) | 7,327(28.27) | 11,516(32.94) | <0.0001 | Felt sad or hopeless | 4,373(41.06) | 9,038(29.67) | 13,410(32.62) | <0.0001 | Considered suicide | 2,567(24.14) | 4,810(15.8) | 7,377(17.96) | <0.0001 |
![]() Conclusions In national data, we found school performance is affected by nutrition, lifestyle, substance use, mood and exposure to surrounding violence, and self-harm. Further studies should be planned to evaluate benefits from the risk stratification to reduce this burden amongst US adolescents. Disclosure No significant relationships.
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Jazrawi S, Yaneva A, Polettini M, Das B, Regan P, Górska M, Cederwall B, Jolie J, Albers H, Chishti M, Banerjee A, Hubbard N, Mistry A, Rudigier M, Benzoni G, Gerl J, Bruce A, Podolyák Z, Nara Singh B, Zhang G, Alhomaidhi S, Appleton C, Arici T, Blazhev A, Davinson T, Esmaylzadeh A, Fraile L, Häfner G, Hall O, John P, Karayonchev V, Koujoharov I, Kurz N, Mikolajczuk M, Pietralla N, Pietri S, Regis J, Sahin E, Sexton L, Schaffner H, Scheidenberger C, Sharma A, Vesic J, Weick H, Werner V. Commissioning the FAst TIMing array (FATIMA) at FAIR Phase-0: Half-lives of excited states in the N=50 isotones 96Pd and 94Ru. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gouda K, Paul R, Bhowmik S, Das B. Investigation of the thermomechanical performance of hybrid polymer composite using micro bamboo powder and graphite flakes. J Appl Polym Sci 2022. [DOI: 10.1002/app.51806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Krushna Gouda
- Department of Plastic Technology Central Institute of Petrochemicals Engineering & Technology Balasore Odisha India
| | - Rajdeep Paul
- Department of Mechanical Engineering National Institute of Technology Silchar Assam India
| | - Sumit Bhowmik
- Department of Mechanical Engineering National Institute of Technology Silchar Assam India
| | - Biplab Das
- Department of Mechanical Engineering National Institute of Technology Silchar Assam India
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Dasgupta S, Banerjee U, Mukhopadhyay P, Maity P, Saha S, Das B. Clinicopathological study and immunohistochemical analysis of expression of annexin A5 and apelin in human placentae of gestational diabetes mellitus. Diabetes Metab Syndr 2022; 16:102435. [PMID: 35245857 DOI: 10.1016/j.dsx.2022.102435] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/09/2022] [Accepted: 02/16/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIMS Gestational diabetes mellitus (GDM) is one of the commonest medical complications of pregnancy. Annexin A5 (ANXA5) is a protein, found in apical surfaces of syncytiotrophoblasts, which prevents fetal and placental vascular thrombosis in GDM. Apelin is a bioactive peptide which has been linked to GDM. The aim of the present study was to correlate macroscopic as well as microscopic changes and immunohistochemical expression of ANXA5 and apelin in placentae of GDM with maternal and neonatal clinical features and also to compare the results with those in matched controls. METHODS This prospective observational study was undertaken for a period of one year from April 2020 to March 2021. It comprised of 42 patients of GDM. Gross features, microscopic features and intensity and grade of expression of ANXA5 and Apelin were analyzed in placentae of GDM. RESULTS Morphological changes detected in GDM placentae included increased immature villi (16 cases, 38%), increased syncytial knots (36, 86%), perivillous fibrin deposition (20, 48%), fibrosis of villous stroma (20, 48%), presence of nucleated red blood cells (12, 28.5%) and hypervascularity (34, 81%). The extent of histopathological changes noted in GDM placentae was significantly higher than that in matched controls. GDM placentae showed significantly reduced expression of ANXA5 and Apelin in terms of grade and intensity when compared with matched controls. Reduced expression (mild intensity) of ANXA5 was noted in 22 GDM cases (52.3%) whereas apelin expression was of weak intensity in 26 (61.9%) cases. Among GDM patients, statistically significant association was noted between ANXA5 intensity and neonatal resuscitation, apelin grade and preterm birth as well as low birth weight and apelin intensity and requirement of treatment in sick neonatal care unit. CONCLUSION The placental expression of the proteins, ANXA5 and Apelin, is altered in GDM though their exact pathogenetic mechanisms are yet to be understood. They can be targets for development of prophylactic and therapeutic agents in future.
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Affiliation(s)
- Senjuti Dasgupta
- Department of Pathology, Medical College, Kolkata, Kolkata, West Bengal, India.
| | - Uma Banerjee
- Department of Pathology, Medical College, Kolkata, Kolkata, West Bengal, India.
| | - Partha Mukhopadhyay
- Department of Obstetrics and Gynecology, Medical College, Kolkata, Kolkata, West Bengal, India.
| | - Priyanka Maity
- Department of Pathology, Medical College, Kolkata, Kolkata, West Bengal, India.
| | - Saswata Saha
- Department of Pathology, Medical College, Kolkata, Kolkata, West Bengal, India.
| | - Biplab Das
- Department of Pathology, Medical College, Kolkata, Kolkata, West Bengal, India.
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12
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Hameed S, Pelc D, Anderson ZW, Klein A, Spieker RJ, Yue L, Das B, Ramberger J, Lukas M, Liu Y, Krogstad MJ, Osborn R, Li Y, Leighton C, Fernandes RM, Greven M. Enhanced superconductivity and ferroelectric quantum criticality in plastically deformed strontium titanate. Nat Mater 2022; 21:54-61. [PMID: 34608284 DOI: 10.1038/s41563-021-01102-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
The properties of quantum materials are commonly tuned using experimental variables such as pressure, magnetic field and doping. Here we explore a different approach using irreversible, plastic deformation of single crystals. We show that compressive plastic deformation induces low-dimensional superconductivity well above the superconducting transition temperature (Tc) of undeformed SrTiO3, with evidence of possible superconducting correlations at temperatures two orders of magnitude above the bulk Tc. The enhanced superconductivity is correlated with the appearance of self-organized dislocation structures, as revealed by diffuse neutron and X-ray scattering. We also observe deformation-induced signatures of quantum-critical ferroelectric fluctuations and inhomogeneous ferroelectric order using Raman scattering. Our results suggest that strain surrounding the self-organized dislocation structures induces local ferroelectricity and quantum-critical dynamics that strongly influence Tc, consistent with a theory of superconductivity enhanced by soft polar fluctuations. Our results demonstrate the potential of plastic deformation and dislocation engineering for the manipulation of electronic properties of quantum materials.
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Affiliation(s)
- S Hameed
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - D Pelc
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA.
- Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia.
| | - Z W Anderson
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - A Klein
- Department of Physics, Faculty of Natural Sciences, Ariel University, Ariel, Israel
| | - R J Spieker
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - L Yue
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, China
| | - B Das
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - J Ramberger
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - M Lukas
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
| | - Y Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - M J Krogstad
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - R Osborn
- Materials Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Y Li
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, China
| | - C Leighton
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA
| | - R M Fernandes
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
| | - M Greven
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA.
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13
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Mahajan A, Goel G, Banga V, Das B. An Unusual Association of Hemihypertrophy with Extracranial and Intracranial Aneurysms. Neurol India 2021; 69:1481-1482. [PMID: 34747857 DOI: 10.4103/0028-3886.329600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Vinit Banga
- Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Biplab Das
- Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
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14
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Godown J, Cantor R, Koehl D, Cummings E, Vo JB, Dodd DA, Lytrivi I, Boyle GJ, Sutcliffe DL, Kleinmahon JA, Shih R, Urschel S, Das B, Carlo WF, Zuckerman WA, West SC, McCulloch MA, Zinn MD, Simpson KE, Kindel SJ, Szmuszkovicz JR, Chrisant M, Auerbach SR, Carboni MP, Kirklin JK, Hsu DT. Practice variation in the diagnosis of acute rejection among pediatric heart transplant centers: An analysis of the pediatric heart transplant society (PHTS) registry. J Heart Lung Transplant 2021; 40:1550-1559. [PMID: 34598871 DOI: 10.1016/j.healun.2021.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 03/29/2021] [Revised: 07/01/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Freedom from rejection in pediatric heart transplant recipients is highly variable across centers. This study aimed to assess the center variation in methods used to diagnose rejection in the first-year post-transplant and determine the impact of this variation on patient outcomes. METHODS The PHTS registry was queried for all rejection episodes in the first-year post-transplant (2010-2019). The primary method for rejection diagnosis was determined for each event as surveillance biopsy, echo diagnosis, or clinical. The percentage of first-year rejection events diagnosed by surveillance biopsy was used to approximate the surveillance strategy across centers. Methods of rejection diagnosis were described and patient outcomes were assessed based on surveillance biopsy utilization among centers. RESULTS A total of 3985 patients from 56 centers were included. Of this group, 873 (22%) developed rejection within the first-year post-transplant. Surveillance biopsy was the most common method of rejection diagnosis (71.7%), but practices were highly variable across centers. The majority (73.6%) of first rejection events occurred within 3-months of transplantation. Diagnosis modality in the first-year was not independently associated with freedom from rejection, freedom from rejection with hemodynamic compromise, or overall graft survival. CONCLUSIONS Rejection in the first-year after pediatric heart transplant occurs in 22% of patients and most commonly in the first 3 months post-transplant. Significant variation exists across centers in the methods used to diagnose rejection in pediatric heart transplant recipients, however, these variable strategies are not independently associated with freedom from rejection, rejection with hemodynamic compromise, or overall graft survival.
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Affiliation(s)
- J Godown
- Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee.
| | - R Cantor
- Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - D Koehl
- Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - E Cummings
- Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - J B Vo
- Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama
| | - D A Dodd
- Pediatric Cardiology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee
| | - I Lytrivi
- Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - G J Boyle
- Pediatric Cardiology, Cleveland Clinic, Cleveland, Ohio
| | - D L Sutcliffe
- Pediatric Cardiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - J A Kleinmahon
- Pediatric Cardiology, Ochsner Hospital for Children, New Orleans, Louisiana
| | - R Shih
- Pediatric Cardiology, University of Florida, Gainesville, Florida
| | - S Urschel
- Pediatric Cardiology, Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
| | - B Das
- Pediatric Cardiology, University of Mississippi Medical Center, Jackson, Mississippi
| | - W F Carlo
- Pediatric Cardiology, University of Alabama at Birmingham, Birmingham, Alabama
| | - W A Zuckerman
- Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - S C West
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - M A McCulloch
- Pediatric Cardiology, University of Virginia Children's Hospital, Charlottesville, Virginia
| | - M D Zinn
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - K E Simpson
- Pediatrics, Division of Cardiology, University of Colorado Anschutz Medical Campus Children's Hospital Colorado, Aurora, Colorado
| | - S J Kindel
- Pediatric Cardiology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin
| | - J R Szmuszkovicz
- Pediatric Cardiology, Children's Hospital of Los Angeles, Los Angeles, California
| | - M Chrisant
- Pediatric Cardiology, Joe DiMaggio Children's Hospital, Hollywood, Florida
| | - S R Auerbach
- Pediatrics, Division of Cardiology, University of Colorado Anschutz Medical Campus Children's Hospital Colorado, Aurora, Colorado
| | - M P Carboni
- Pediatric Cardiology, Duke Children's Hospital, Durham, North Carolina
| | - J K Kirklin
- Kirklin Institute for Research in Surgical Outcomes, University of Alabama at Birmingham, Birmingham, Alabama; Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama
| | - D T Hsu
- Pediatric Cardiology, Children's Hospital at Montefiore, Bronx, New York
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15
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Mahajan A, Goel G, Das B, Narang KS. Large Ophthalmic Artery Aneurysm Presented as Isolated Basifrontal Hematoma without Subarachnoid Hemorrhage: A Rare Imaging Finding. Neurol India 2021; 69:1109-1110. [PMID: 34507472 DOI: 10.4103/0028-3886.325328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Biplab Das
- Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Karanjit S Narang
- Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
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16
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Mahajan A, Goel G, Das B, Banga V, Narang KS. Bizarre Growth of Partially Thrombosed Giant Aneurysm of Distal Anterior Cerebral Artery-The End of the Treatment is not the End. Neurol India 2021; 69:1067-1069. [PMID: 34507451 DOI: 10.4103/0028-3886.325354] [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: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Department of Neurosciences, Medanta, The Medicity. Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurosciences, Medanta, The Medicity. Gurgaon, Haryana, India
| | - Biplab Das
- Department of Neurosciences, Medanta, The Medicity. Gurgaon, Haryana, India
| | - Vinit Banga
- Department of Neurosciences, Medanta, The Medicity. Gurgaon, Haryana, India
| | - Karanjit S Narang
- Department of Neurosciences, Medanta, The Medicity. Gurgaon, Haryana, India
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17
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Bhattacharjee R, Gupta RK, Das B, Dixit VK, Gupta P, Singh A. Penumbra quantification from MR SWI-DWI mismatch and its comparison with MR ASL PWI-DWI mismatch in patients with acute ischemic stroke. NMR Biomed 2021; 34:e4526. [PMID: 33880799 DOI: 10.1002/nbm.4526] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
In acute-ischemic-stroke patients, penumbra assessment plays a significant role in treatment outcome. MR perfusion-weighted imaging (PWI) and diffusion-weighted imaging (DWI) mismatch ratio can provide penumbra assessment. Recently reported studies have shown the potential of susceptibility-weighted imaging (SWI) in the qualitative assessment of penumbra. We hypothesize that quantitative penumbra assessment using SWI-DWI can provide an alternative to the PWI-DWI approach and this can also reduce the overall scan-time. The purpose of the current study was to develop a framework for accurate quantitative assessment of penumbra using SWI-DWI and its validation with PWI-DWI-based quantification. In the current study, the arterial-spin-labelling (ASL) technique has been used for PWI. This retrospective study included 25 acute-ischemic-stroke patients presenting within 24 hours of the last noted baseline condition of stroke onset. Eleven patients also had follow-up MRI within 48 hours. MRI acquisition comprised DWI, SWI, pseudo-continuous-ASL (pCASL), FLAIR and non-contrast-angiography sequences. A framework was developed for the enhancement of prominent hypo-intense vein signs followed by automatic segmentation of the SWI penumbra ROI. Apparent-diffusion-coefficient (ADC) maps and cerebral-blood-flow (CBF) maps were computed. The infarct core ROI from the ADC map and the ASL penumbra ROI from CBF maps were segmented semiautomatically. The infarct core volume, SWI penumbra volume (SPV) and pCASL penumbra volume were computed and used to calculate mismatch ratios MRSWIADC and MRCBFADC . The Dice coefficient between the SWI penumbra ROI and ASL penumbra ROI was 0.96 ± 0.07. MRSWIADC correlated well (r = 0.90, p < 0.05) with MRCBFADC , which validates the hypothesis of accurate penumbra assessment using the SWI-DWI mismatch ratio. Moreover, a significant association between high SPV and the presence of vessel occlusion in the MR angiogram was observed. Follow-up data showed salvation of penumbra tissue (location and volumes predicted by proposed framework) by treatments. Additionally, functional-outcome analysis revealed 93.3% of patients with MRSWIADC > 1 benefitted from revascularization therapy. Overall, the proposed automated quantitative assessment of penumbra using the SWI-DWI mismatch ratio performs equivalently to the ASL PWI-DWI mismatch ratio. This approach provides an alternative to the perfusion sequence required for penumbra assessment, which can reduce scan time by 17% for the protocol without a perfusion sequence.
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Affiliation(s)
- Rupsa Bhattacharjee
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, India
- Philips Health System, Philips India Limited, Gurugram, India
| | - Rakesh Kumar Gupta
- Department of Radiology and Imaging, Fortis Memorial Research Institute, Gurugram, India
| | - Biplab Das
- Department of Interventional Neuroradiology, Fortis Memorial Research Institute, Gurugram, India
- Department of Neurology, Fortis Memorial Research Institute, Gurugram, India
| | - Vijay Kant Dixit
- Department of Interventional Neuroradiology, Fortis Memorial Research Institute, Gurugram, India
| | - Praveen Gupta
- Department of Neurology, Fortis Memorial Research Institute, Gurugram, India
| | - Anup Singh
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, India
- Department of Biomedical Engineering, All India Institute of Medical Sciences, New Delhi, India
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18
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Mahajan A, Goel G, Das B, Narang KS. Appearing and Disappearing Ruptured Internal Carotid Artery Bifurcation Aneurysm: Is it Really Fugacious? Neurol India 2021; 68:1495-1496. [PMID: 33342905 DOI: 10.4103/0028-3886.304094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Consultant Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Consultant Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Biplab Das
- Consultant Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
| | - Karanjit S Narang
- Consultant Neurointervention Surgery, Department of Neurosciences, Medanta, The Medicity, Gurgaon, Haryana, India
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19
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Abanades S, Abbaspour H, Ahmadi A, Das B, Ehyaei MA, Esmaeilion F, El Haj Assad M, Hajilounezhad T, Jamali DH, Hmida A, Ozgoli HA, Safari S, AlShabi M, Bani-Hani EH. A critical review of biogas production and usage with legislations framework across the globe. Int J Environ Sci Technol (Tehran) 2021; 19:3377-3400. [PMID: 34025745 PMCID: PMC8124099 DOI: 10.1007/s13762-021-03301-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 05/30/2023]
Abstract
This review showcases a comprehensive analysis of studies that highlight the different conversion procedures attempted across the globe. The resources of biogas production along with treatment methods are presented. The effect of different governing parameters like feedstock types, pretreatment approaches, process development, and yield to enhance the biogas productivity is highlighted. Biogas applications, for example, in heating, electricity production, and transportation with their global share based on national and international statistics are emphasized. Reviewing the world research progress in the past 10 years shows an increase of ~ 90% in biogas industry (120 GW in 2019 compared to 65 GW in 2010). Europe (e.g., in 2017) contributed to over 70% of the world biogas generation representing 64 TWh. Finally, different regulations that manage the biogas market are presented. Management of biogas market includes the processes of exploration, production, treatment, and environmental impact assessment, till the marketing and safe disposal of wastes associated with biogas handling. A brief overview of some safety rules and proposed policy based on the world regulations is provided. The effect of these regulations and policies on marketing and promoting biogas is highlighted for different countries. The results from such studies show that Europe has the highest promotion rate, while nowadays in China and India the consumption rate is maximum as a result of applying up-to-date policies and procedures.
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Affiliation(s)
- S. Abanades
- Processes, Materials, and Solar Energy Laboratory, PROMES-CNRS, 7 Rue du Four Solaire, 66120 Font-Romeu, France
| | - H. Abbaspour
- Department of Biology, Faculty of Biological Science, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - A. Ahmadi
- School of New Technologies, Iran University of Science & Technology, Tehran, Islamic Republic of Iran
| | - B. Das
- Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, Asaam 788010 India
| | - M. A. Ehyaei
- Department of Mechanical Engineering, Pardis Branch, Islamic Azad University, Pardis New City, Iran
| | - F. Esmaeilion
- Department of Energy Systems Engineering, School of Advance Technologies, Iran University of Science & Technology (IUST), Tehran, Iran
| | - M. El Haj Assad
- Sustainable & Renewable Energy Engineering Department, University of Sharjah, Sharjah, United Arab Emirates
| | - T. Hajilounezhad
- Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, MO USA
| | - D. H. Jamali
- School of Environment, College of Engineering, University of Tehran, Tehran, Iran
| | - A. Hmida
- R, L. Applied Thermodynamic, National Engineering School of Gabes, University of Gabes, Gabes, Tunisia
| | - H. A. Ozgoli
- Department of Mechanical Engineering, Iranian Research Organization for Science and Technology (IROST), Sh. Ehsani Rad St., Enqelab StParsa SqAhmadabad Mostoufi RdAzadegan Highway, 3313193685 Tehran, Iran
| | - S. Safari
- Department of Energy Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University (IAU), Daneshgah Blvd, Simon Bolivar Blvd, 1477893855 Tehran, Iran
| | - M. AlShabi
- Department of Mechanical and Nuclear Engineering, University of Sharjah, Sharjah, UAE
| | - E. H. Bani-Hani
- Department of Mechanical Engineering, School of Engineering, Australian College of Kuwait, Kuwait City, Kuwait
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20
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Gupta A, Das B, Biswas A. Performance analysis of stand‐alone solar photovoltaic thermal dryer for drying of green chili in hot‐humid weather conditions of
North‐East
India. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13701] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ankur Gupta
- PVT Laboratory, Department of Mechanical Engineering National Institute of Technology Silchar Silchar Assam India
| | - Biplab Das
- PVT Laboratory, Department of Mechanical Engineering National Institute of Technology Silchar Silchar Assam India
- School of the Built Environment Centre for Sustainable Technologies, Ulster University Belfast Northern Ireland UK
| | - Agnimitra Biswas
- PVT Laboratory, Department of Mechanical Engineering National Institute of Technology Silchar Silchar Assam India
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21
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Gonzalvez F, Vincent S, Baker TE, Gould AE, Li S, Wardwell SD, Nadworny S, Ning Y, Zhang S, Huang WS, Hu Y, Li F, Greenfield MT, Zech SG, Das B, Narasimhan NI, Clackson T, Dalgarno D, Shakespeare WC, Fitzgerald M, Chouitar J, Griffin RJ, Liu S, Wong KK, Zhu X, Rivera VM. Mobocertinib (TAK-788): A Targeted Inhibitor of EGFR Exon 20 Insertion Mutants in Non-Small Cell Lung Cancer. Cancer Discov 2021; 11:1672-1687. [PMID: 33632773 DOI: 10.1158/2159-8290.cd-20-1683] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/05/2021] [Accepted: 02/22/2021] [Indexed: 11/16/2022]
Abstract
Most EGFR exon 20 insertion (EGFRex20ins) driver mutations in non-small cell lung cancer (NSCLC) are insensitive to approved EGFR tyrosine kinase inhibitors (TKI). To address the limitations of existing therapies targeting EGFR-mutated NSCLC, mobocertinib (TAK-788), a novel irreversible EGFR TKI, was specifically designed to potently inhibit oncogenic variants containing activating EGFRex20ins mutations with selectivity over wild-type EGFR. The in vitro and in vivo activity of mobocertinib was evaluated in engineered and patient-derived models harboring diverse EGFRex20ins mutations. Mobocertinib inhibited viability of various EGFRex20ins-driven cell lines more potently than approved EGFR TKIs and demonstrated in vivo antitumor efficacy in patient-derived xenografts and murine orthotopic models. These findings support the ongoing clinical development of mobocertinib for the treatment of EGFRex20ins-mutated NSCLC. SIGNIFICANCE: No oral EGFR-targeted therapies are approved for EGFR exon 20 insertion (EGFRex20ins) mutation-driven NSCLC. Mobocertinib is a novel small-molecule EGFR inhibitor specifically designed to target EGFRex20ins mutants. Preclinical data reported here support the clinical development of mobocertinib in patients with NSCLC with EGFR exon 20 insertion mutations.See related commentary by Pacheco, p. 1617.This article is highlighted in the In This Issue feature, p. 1601.
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Affiliation(s)
- Francois Gonzalvez
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Sylvie Vincent
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Theresa E Baker
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Alexandra E Gould
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Shuai Li
- Laura and Isaac Perlmutter Cancer Center, New York University School of Medicine, NYU Langone Health, New York, New York
| | - Scott D Wardwell
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Sara Nadworny
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Yaoyu Ning
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Sen Zhang
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Wei-Sheng Huang
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Yongbo Hu
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Feng Li
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Matthew T Greenfield
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Stephan G Zech
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Biplab Das
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Narayana I Narasimhan
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Tim Clackson
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - David Dalgarno
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - William C Shakespeare
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Michael Fitzgerald
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Johara Chouitar
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Robert J Griffin
- Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Shengwu Liu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Kwok-Kin Wong
- Laura and Isaac Perlmutter Cancer Center, New York University School of Medicine, NYU Langone Health, New York, New York
| | - Xiaotian Zhu
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited
| | - Victor M Rivera
- ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited.
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Dasgupta S, Maity P, Banerjee U, Mukhopadhyay P, Saha S, Das B. Clinicopathological study of annexin A5 & apelin in pre-eclamptic placentae with emphasis on foetal outcome. Indian J Med Res 2021; 154:813-822. [PMID: 35662086 PMCID: PMC9347247 DOI: 10.4103/ijmr.ijmr_433_21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background & objectives: Pre-eclampsia has remained an elusive disease with serious impacts on both maternal and foetal health. Two novel markers, annexin A5 (ANXA5) and apelin are currently of considerable interest. The present study aimed to determine the placental expression of ANXA5 and apelin in pre-eclamptic placentae and also to elucidate if there is any correlation between the expression of these markers and the clinical features of both, mother and neonate. The comparison between gross and histopathological features of pre-eclamptic placentae and controls was another objective. Methods: A prospective, observational study was undertaken for one year. Placentae of pre-eclamptic patients and matched controls (matched for age, ethnic and socio-economic background) were collected along with the clinical data. Gross and histopathological analyses were done and immunohistochemical study of placental sections with ANXA5 and apelin was also undertaken. Results: 79 pre-eclamptic patients and equal numbers of matched controls were included in the study. The difference in weight and dimensions of placentae between the pre-eclampsia group and matched controls was significant. Histopathological features noted in the pre-eclamptic placentae included decidual vasculopathy, infarction, perivillous fibrin deposition, increased syncytial knots and distal villous hypoplasia. There was a significant reduction in the expression of both ANXA5 and apelin in pre-eclamptic placentae compared to controls. Among pre-eclamptic patients, the intensity of ANXA5 and apelin expression showed a significant association with respect to neonatal resuscitation. Furthermore, the intensity of apelin showed expression a significant correlation with the requirement of sick neonatal care unit treatment. Interpretation & conclusions: The results of the present study suggest that both ANXA5 and apelin levels are reduced in pre-eclamptic placentae. Hence, it is recommended to further explore the impact of these markers on pregnancy outcomes by undertaking randomized controlled trials.
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Fu S, Meng H, Inamdar S, Das B, Gupta H, Wang W, Thompson CL, Knight MM. Activation of TRPV4 by mechanical, osmotic or pharmaceutical stimulation is anti-inflammatory blocking IL-1β mediated articular cartilage matrix destruction. Osteoarthritis Cartilage 2021; 29:89-99. [PMID: 33395574 PMCID: PMC7799379 DOI: 10.1016/j.joca.2020.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 08/04/2020] [Accepted: 08/11/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Cartilage health is maintained in response to a range of mechanical stimuli including compressive, shear and tensile strains and associated alterations in osmolality. The osmotic-sensitive ion channel Transient Receptor Potential Vanilloid 4 (TRPV4) is required for mechanotransduction. Mechanical stimuli inhibit interleukin-1β (IL-1β) mediated inflammatory signalling, however the mechanism is unclear. This study aims to clarify the role of TRPV4 in this response. DESIGN TRPV4 activity was modulated glycogen synthase kinase (GSK205 antagonist or GSK1016790 A (GSK101) agonist) in articular chondrocytes and cartilage explants in the presence or absence of IL-1β, mechanical (10% cyclic tensile strain (CTS), 0.33 Hz, 24hrs) or osmotic loading (200mOsm, 24hrs). Nitric oxide (NO), prostaglandin E2 (PGE2) and sulphated glycosaminoglycan (sGAG) release and cartilage biomechanics were analysed. Alterations in post-translational tubulin modifications and primary cilia length regulation were examined. RESULTS In isolated chondrocytes, mechanical loading inhibited IL-1β mediated NO and PGE2 release. This response was inhibited by GSK205. Similarly, osmotic loading was anti-inflammatory in cells and explants, this response was abrogated by TRPV4 inhibition. In explants, GSK101 inhibited IL-1β mediated NO release and prevented cartilage degradation and loss of mechanical properties. Upon activation, TRPV4 cilia localisation was increased resulting in histone deacetylase 6 (HDAC6)-dependent modulation of soluble tubulin and altered cilia length regulation. CONCLUSION Mechanical, osmotic or pharmaceutical activation of TRPV4 regulates HDAC6-dependent modulation of ciliary tubulin and is anti-inflammatory. This study reveals for the first time, the potential of TRPV4 manipulation as a novel therapeutic mechanism to supress pro-inflammatory signalling and cartilage degradation.
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Affiliation(s)
- S Fu
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - H Meng
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - S Inamdar
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - B Das
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK
| | - H Gupta
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - W Wang
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - C L Thompson
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
| | - M M Knight
- Centre for Predictive In Vitro Models, School of Engineering and Materials Science, Queen Mary University of London, UK.
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Singh N, Prasad P, Das B, Rastogi S. Is there an association between Chlamydia trachomatis load and in situ expression of cyclooxygenase/inflammatory cytokines in first trimester aborters. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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25
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Das B, Mahajan A, Goel G, Garg A. Tenecteplase-induced Nonaneurysmal Subarachnoid Hemorrhage in a Patient with Acute Ischemic Stroke: A Case Report and Literature Review. Asian J Neurosurg 2020; 15:706-708. [PMID: 33145234 PMCID: PMC7591223 DOI: 10.4103/ajns.ajns_131_20] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/07/2020] [Accepted: 05/28/2020] [Indexed: 12/02/2022] Open
Abstract
Recently, tenecteplase (TNK) has been used for intravenous thrombolysis in acute ischemic stroke (AIS). Although spontaneous subarachnoid hemorrhage (SAH) following thrombolysis with tissue plasminogen activator has been reported, there is a lack of literature regarding TNK-induced nonaneurysmal spontaneous SAH. Our index case received intravenous TNK within an hour of symptom onset of AIS. Following deterioration of sensorium, repeat noncontrast computed tomography was performed, which showed diffuse SAH. Cerebral angiography did not reveal any aneurysm. Nonaneurysmal SAH can be a complication of TNK thrombolysis, which is not reported in literature. Knowledge of this possible adverse reaction is critical for appropriate counseling and management.
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Affiliation(s)
- Biplab Das
- Department of Neurointervention, Institute of Neuroscience, Medanta the Medicity, Gurgaon, Haryana, India.,Department of Neurology and Interventional Neuroradiology, Fortis Memorial Research Institute, Gurgaon, Haryana, India
| | - Anshu Mahajan
- Department of Neurointervention, Institute of Neuroscience, Medanta the Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurointervention, Institute of Neuroscience, Medanta the Medicity, Gurgaon, Haryana, India
| | - Arun Garg
- Department of Neurology, Institute of Neuroscience, Medanta the Medicity, Gurgaon, Haryana, India
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Das B, De D. Router design for nano-communication using actin quantum cellular automata. IET Nanobiotechnol 2020; 14:609-616. [PMID: 33010137 PMCID: PMC8676500 DOI: 10.1049/iet-nbt.2020.0186] [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: 05/19/2020] [Revised: 06/21/2020] [Accepted: 07/10/2020] [Indexed: 11/20/2022] Open
Abstract
Logic expressions can be designed from actin filaments. It is a protein that makes the cellular structure and plays an important role in intracellular communication. Nano communication technique has been established using actin cellular automata. Among several rules, (1, 30) and (4, 27) rules have been used to design 2 to 1 multiplexer, 4 to 1 multiplexer, 1 to 2 demultiplexer and 1 to 4 demultiplexer. Router or data selector has been made of using multiplexer and demultiplexer. Three novel circuits such as multiplexer, demultiplexer and nano-router have been designed using the projected mechanism. The primary focus of this proposed technique is on different designs of the multiplexer, demultiplexer and minimum cell count with minimum time steps. The different router circuits have been simulated with the help of Simulink by which output has been verified for different circuits. Stuck at fault analysis is also done in this study. Device density and power consumption have also been included in this study. A comparative analysis of the different designs of the router provides a better concept of circuit optimisation. Furthermore, this study analyses convenient forthcoming applications in nano-technology and nano-bio-molecular systems involving the proposed parameters.
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Affiliation(s)
- Biplab Das
- Department of Computer Science and Engineering, Maulana Abul Kalam Azad University of Technology, West Bengal, BF-142, Sector-1, Saltlake, Kolkata-700064, India.
| | - Debashis De
- Department of Computer Science and Engineering, Maulana Abul Kalam Azad University of Technology, West Bengal, BF-142, Sector-1, Saltlake, Kolkata-700064, India
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Das B, Borah B, Bhattacharyya S. COMPARATIVE ANALYSIS OF CARBOXYMETHYL CELLULOSE AND PARTIALLY HYDROLYZED POLYACRYLAMIDE – LOW-SOLID NONDISPERSED DRILLING MUD WITH RESPECT TO PROPER-TY ENHANCEMENT AND SHALE INHIBITION. REFFIT 2020. [DOI: 10.18799/24056537/2020/2/262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
During drilling, different problems are encountered that can interfere with smooth drilling processes, including the accumulation of cuttings, reduced penetration rates, pipe sticking, loss of wellbore stability, and loss of circulation. These problems are generally encountered with conventional drilling mud, such as the bentonite–barite mud system. Formation damage is the most common problem encountered in bentonite mud systems with high solid content. In this work, we aimed to formulate two low-solid nondispersed (LSND) muds: carboxymethyl cellulose (CMC)–LSND mud and partially hydrolyzed polyacrylamide (PHPA)–LSND mud. A comparative analysis was performed to evaluate their property enhancements. LSND muds aid in maintaining hole stability and proper cutting removal. The results of this work show that the addition of both CMC and PHPA helps to improve drilling fluid properties; however, the PHPA–LSND mud was found to be superior. Shale swelling is a major concern in the petroleum industry, as it causes various other problems, such as pipe sticking, low penetration rates, and bit wear. The effect of these two LSND polymer muds in inhibiting shale swelling was analyzed using shale collected from the Champhai district of Mizoram, India.
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Mahajan A, Goel G, Das B, Banga V. Reruptured Previously Coiled Aneurysm - Is it the Ideal Time to Perform Check Angiography at Six Months after Endovascular Coiling? Neurol India 2020; 68:698-700. [PMID: 32643694 DOI: 10.4103/0028-3886.289007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Department of Neurosciences, Medanta, The Medicity, Gurugram, Haryana, India
| | - Gaurav Goel
- Department of Neurosciences, Medanta, The Medicity, Gurugram, Haryana, India
| | - Biplab Das
- Department of Neurosciences, Medanta, The Medicity, Gurugram, Haryana, India
| | - Vinit Banga
- Department of Neurosciences, Medanta, The Medicity, Gurugram, Haryana, India
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Choudhury N, Paul D, Das B, (Chanda) DD, Bhattacharjee A. Real time PCR based detection of broadhost range plasmids and their potential use as biomarker in detection of multidrug resistant gram negative bacteria. J Infect Public Health 2020. [DOI: 10.1016/j.jiph.2020.01.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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30
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Janas MM, Zlatev I, Liu J, Jiang Y, Barros SA, Sutherland JE, Davis WP, Liu J, Brown CR, Liu X, Schlegel MK, Blair L, Zhang X, Das B, Tran C, Aluri K, Li J, Agarwal S, Indrakanti R, Charisse K, Nair J, Matsuda S, Rajeev KG, Zimmermann T, Sepp-Lorenzino L, Xu Y, Akinc A, Fitzgerald K, Vaishnaw AK, Smith PF, Manoharan M, Jadhav V, Wu JT, Maier MA. Safety evaluation of 2'-deoxy-2'-fluoro nucleotides in GalNAc-siRNA conjugates. Nucleic Acids Res 2019; 47:3306-3320. [PMID: 30820542 PMCID: PMC6468299 DOI: 10.1093/nar/gkz140] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/07/2019] [Accepted: 02/19/2019] [Indexed: 11/29/2022] Open
Abstract
For oligonucleotide therapeutics, chemical modifications of the sugar-phosphate backbone are frequently used to confer drug-like properties. Because 2′-deoxy-2′-fluoro (2′-F) nucleotides are not known to occur naturally, their safety profile was assessed when used in revusiran and ALN-TTRSC02, two short interfering RNAs (siRNAs), of the same sequence but different chemical modification pattern and metabolic stability, conjugated to an N-acetylgalactosamine (GalNAc) ligand for targeted delivery to hepatocytes. Exposure to 2′-F-monomer metabolites was low and transient in rats and humans. In vitro, 2′-F-nucleoside 5′-triphosphates were neither inhibitors nor preferred substrates for human polymerases, and no obligate or non-obligate chain termination was observed. Modest effects on cell viability and mitochondrial DNA were observed in vitro in a subset of cell types at high concentrations of 2′-F-nucleosides, typically not attained in vivo. No apparent functional impact on mitochondria and no significant accumulation of 2′-F-monomers were observed after weekly administration of two GalNAc–siRNA conjugates in rats for ∼2 years. Taken together, the results support the conclusion that 2′-F nucleotides can be safely applied for the design of metabolically stabilized therapeutic GalNAc–siRNAs with favorable potency and prolonged duration of activity allowing for low dose and infrequent dosing.
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Affiliation(s)
- Maja M Janas
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Ivan Zlatev
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Ju Liu
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | | | | | | | - Jingxuan Liu
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | - Xiumin Liu
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | - Lauren Blair
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Xuemei Zhang
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Biplab Das
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Chris Tran
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Krishna Aluri
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Jing Li
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Saket Agarwal
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | | | | | | | | | | | | | - Yuanxin Xu
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Akin Akinc
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | | | - Peter F Smith
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | | | - Vasant Jadhav
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
| | - Jing-Tao Wu
- Alnylam Pharmaceuticals, Inc., Cambridge, MA 02142, USA
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Das B, Goel G, Mahajan A, Vinit B, Arun G. Daft (dual aspiration and fluff technique) for stent retrievers in acute ischemic stroke with large vessel occlusion: A successful new technique for early recanalisation. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Acharya M, Das B, Nahar NB. Cryptococcal meningitis in HIV and non-HIV patients - A comparative study of clinical and CSF parameters. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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33
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Das B, Goel G, Mahajan A, Banga V, Singh V. Surpass flow diverter in the treatment of acutely ruptured aneurysms: Indian multi-center experience. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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McBride O, Schneider E, Das B, Sastre L. In Person, Online or Social Media? Preferences of Low-Income Patients for Nutrition and Physical Activity Programming within Community Clinics. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.08.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Bansal A, Sanariya K, Garg A, Das B. Thrombolysis of acute ischemic stroke in a HIV-positive patient: Report and review of literature. Neurol India 2019; 67:580-582. [DOI: 10.4103/0028-3886.258007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Affiliation(s)
- Roopa Rajan
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Vinny Wilson
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Biplab Das
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Paramjeet Singh
- Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Jasmina Ahluwalia
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sahil Mehta
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Vivek Lal
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Kumari K, Tripathy J, Mohapatra P, Verma S, Das B, Raina V, Ray L. Evaluation of toxicity of HCH isomers and its degradation metabolites on mammalian cell line and zebra fish embryos. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.1142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mahajan A, Das B, Narang KS, Jha AN, Singh VP, Sapra H, Goel G. Surpass Flow Diverter in the Treatment of Ruptured Intracranial Aneurysms-A Single-Center Experience. World Neurosurg 2018; 120:e1061-e1070. [PMID: 30213677 DOI: 10.1016/j.wneu.2018.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 05/28/2018] [Revised: 08/30/2018] [Accepted: 09/02/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Use of a Surpass flow diverter (FD) device in the treatment of acutely ruptured aneurysm has not been well studied and reported in the literature. METHODS We retrospectively reviewed patients with subarachnoid hemorrhage who were treated by Surpass FD placement at our hospital between June 2016 and March 2018. Detailed analysis of medical records was performed to obtain patient age, gender, clinical history, Hunt and Hess grade, Fisher grade, results of radiographic and procedural details including technical success and complication, clinical outcome, and follow-up angiographic results. RESULTS Our search identified 16 patients with 16 aneurysms who were treated with Surpass FD, of which 13 aneurysms (81%) were in the anterior circulation and 3 (19%) were in the posterior circulation. Aneurysm size ranged from 1.1 to 16 mm, with a mean of 4 mm. The mean delay between subarachnoid hemorrhage and endovascular treatment was 5 days (range, 3-20 days). Only 1 Surpass FD was used in each patient, ranging in size from 3 × 25 mm to 4 × 50 mm. Fifteen patients (94%) achieved favorable clinical outcome (modified Rankin Scale score 0-1) at 3 months. One patient died of invasive fungal infection. Angiographic follow-up results were assessed by O'Kelly-Marotta grading scale in 15 surviving patients and showed a grade D result (no filling) in 13/15 aneurysms (87%) at 3 and 6 months. CONCLUSIONS A Surpass FD device is a feasible option for the treatment of ruptured intracranial aneurysms that are difficult to treat by conventional clipping and coiling; however, larger and comparative studies with long-term follow-up are needed to confirm its safety and efficacy.
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Affiliation(s)
- Anshu Mahajan
- Department of Neurointerventional surgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Biplab Das
- Department of Neurointerventional surgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Karanjit Singh Narang
- Department of Neurosurgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Ajaya Nand Jha
- Department of Neurosurgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Varindera Paul Singh
- Department of Neurosurgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Harsh Sapra
- Department of Neuroanaesthesia and Critical Care, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurointerventional surgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India.
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Mahajan A, Goel G, Das B, Narang K. Dissecting aneurysm of vertebral artery involving the origin of posteroinferior cerebellar artery treated with retrograde stent placement and coil embolization in the era of flow diverter. Asian J Neurosurg 2018; 13:910-913. [PMID: 30283580 PMCID: PMC6159080 DOI: 10.4103/ajns.ajns_59_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Ruptured vertebral artery (VA) dissecting aneurysm carries high risk of rerupture and mortality if not treated immediately. Dissecting aneurysm of the VA involving the posteroinferior cerebellar artery (PICA) origin is difficult to treat by surgical and endovascular route. With the availability of flow diversion device for reconstructive procedure, endovascular treatment has now become easy to treat difficult aneurysm while maintaining the patency of the PICA. However, instead of using flow diverter (FD) in our case, we successfully treated dissecting VA aneurysm involving the PICA origin with retrograde stent placement from distal right VA to the left PICA to maintain the patency of PICA and occlusion of dissecting aneurysm of VA with detachable coils instead of performing surgical bypass and FD placement.
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Affiliation(s)
- Anshu Mahajan
- Department of Neurosciences, Medanta - The Medicity, Gurgaon, Haryana
| | - Gaurav Goel
- Department of Neurosciences, Medanta - The Medicity, Gurgaon, Haryana
| | - Biplab Das
- Department of Neurosciences, Medanta - The Medicity, Gurgaon, Haryana
| | - Karanjit Narang
- Department of Neurosciences, Medanta - The Medicity, Gurgaon, Haryana
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Sett A, Das D, Banerjee D, Ghorai UK, Das NS, Das B, Chattopadhyay KK. 1D-2D hybrids as efficient optoelectronic materials: a study on graphitic carbon nitride nanosheets wrapped with zinc oxide rods. Dalton Trans 2018; 47:4501-4507. [PMID: 29505061 DOI: 10.1039/c8dt00016f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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
Zinc oxide (ZnO) nanorods (NRs) wrapped with graphitic carbon nitride (GCN) nanosheet (NS) hybrids have been synthesized by a simple chemical process. The as-prepared samples are characterized by X-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy, Fourier transformed infrared spectroscopy, UV-Vis spectroscopy and photoluminescence spectroscopy. The images obtained from the transmission electron microscopic study and the existence of C-N stretching modes as observed from Fourier transform infrared spectroscopy confirm the successful attachment of GCN NSs onto the ZnO NRs. It is seen that hybrid samples show broad photoluminescence (PL) emission with enhanced defect related emission along with a quenching effect due to the charge transfer mechanism. The results have been explained by taking into consideration the three different types of electron transitions occurring within the type-II band structure of the hybrid samples. Moreover a study on the conductivity of the samples is carried out under dark conditions and also under ultraviolet (UV) light irradiation. It is observed that the hybrid samples show significantly improved conductivity under both dark and UV irradiated conditions. The absorbance of the samples in the UV range shows better conductivity under UV conditions as compared to dark conditions.
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Affiliation(s)
- A Sett
- School of Material Science and Nanotechnology, Jadavpur University, Kolkata 700032, India.
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41
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Godown J, Pruitt E, Vo J, Dodd D, Lytrivi I, Boyle G, Sutcliffe D, Kleinmahon J, Shih R, Urschel S, Das B, Carlo W, Zuckerman W, West S, McCulloch M, Zinn M, Simpson K, Kindel S, Szmuszkovicz J, Chrisant M, Auerbach S, Carboni M, Hsu D. Practice Variation in the Diagnosis of Acute Rejection Among Pediatric Heart Transplant Centers: An Analysis of the Pediatric Heart Transplant Study (PHTS) Database. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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42
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Mahajan A, Goel G, Das B, Narang KS. Recanalized Left Internal Carotid Artery Bifurcation Aneurysm with Adherent Thrombus at Aneurysm Neck and M1 Origin Diagnosed on 2-Dimensional Angiography-Cause of Embolic Stroke. World Neurosurg 2018. [PMID: 29524698 DOI: 10.1016/j.wneu.2018.02.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We report a unique case of recanalized left internal carotid artery aneurysm with thrombus adherent to the aneurysm neck and M1 origin diagnosed on 2-dimensional angiography causing embolic stroke in a 66-year-old female who was successfully treated with stent-assisted coiling. This is important to recognize as a cause of embolic stroke.
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Affiliation(s)
- Anshu Mahajan
- Department of Neurointervention, Medanta-the Medicity, Gurgaon, India
| | - Gaurav Goel
- Department of Neurointervention, Medanta-the Medicity, Gurgaon, India.
| | - Biplab Das
- Department of Neurointervention, Medanta-the Medicity, Gurgaon, India
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Mondal M, Das B, Howli P, Das N, Chattopadhyay K. Porosity-tuned NiO nanoflakes: Effect of calcination temperature for high performing supercapacitor application. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.01.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mahajan A, Das B, Goel G, Garg A, Sapra H. Carotid stump syndrome treated with endovascular coiling: A rare cause of stroke in young patients. Neurol India 2018; 66:228-229. [PMID: 29322990 DOI: 10.4103/0028-3886.222861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anshu Mahajan
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Biplab Das
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Arun Garg
- Department of Neurology, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Harsh Sapra
- Department of Neuroanaesthesia, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
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Abstract
Posterior reversible encephalopathy syndrome (PRES) is a clinical radiographic diagnosis of heterogeneous etiologies. The pathogenesis of PRES remains unclear, but may be related to impaired cerebral autoregulation and endothelial dysfunction. We present a case of intravascular nonionic contrast-induced PRES observed after cerebral angiography. The index patient was a follow-up case of large vertebrobasilar artery-dissecting aneurysm for which endovascular coiling was done 6 months back. She improved completely within a week. Contrast-induced PRES is a reversible benign condition, knowledge of which is crucial for appropriate management.
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Affiliation(s)
- Biplab Das
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Gaurav Goel
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Anshu Mahajan
- Department of Neurointervention, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Atma Ram Bansal
- Department of Neurology, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Harsh Sapra
- Department of Neuroanesthesia, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
| | - Ajaya Nanda Jha
- Department of Neurosurgery, Institute of Neuroscience, Medanta The Medicity, Gurgaon, Haryana, India
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46
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Goel G, Mahajan A, Das B, Narang K. A rare case of spontaneous thrombosis of vein of Galen malformation in a young adult diagnosed on magnetic resonance imaging and digital subtraction angiography. Neurol India 2018; 66:1505-1506. [DOI: 10.4103/0028-3886.241344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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47
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Hayer SS, VanderWaal K, Ranjan R, Biswal JK, Subramaniam S, Mohapatra JK, Sharma GK, Rout M, Dash BB, Das B, Prusty BR, Sharma AK, Stenfeldt C, Perez A, Delgado AH, Sharma MK, Rodriguez LL, Pattnaik B, Arzt J. Foot-and-mouth disease virus transmission dynamics and persistence in a herd of vaccinated dairy cattle in India. Transbound Emerg Dis 2017; 65:e404-e415. [PMID: 29205858 DOI: 10.1111/tbed.12774] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 08/30/2017] [Indexed: 11/28/2022]
Abstract
Foot-and-mouth disease (FMD) is an important transboundary disease with substantial economic impacts. Although between-herd transmission of the disease has been well studied, studies focusing on within-herd transmission using farm-level outbreak data are rare. The aim of this study was to estimate parameters associated with within-herd transmission, host physiological factors and FMD virus (FMDV) persistence using data collected from an outbreak that occurred at a large, organized dairy farm in India. Of 1,836 regularly vaccinated, adult dairy cattle, 222 had clinical signs of FMD over a 39-day period. Assuming homogenous mixing, a frequency-dependent compartmental model of disease transmission was built. The transmission coefficient and basic reproductive number were estimated to be between 16.2-18.4 and 67-88, respectively. Non-pregnant animals were more likely to manifest clinical signs of FMD as compared to pregnant cattle. Based on oropharyngeal fluid (probang) sampling and FMDV-specific RT-PCR, four of 36 longitudinally sampled animals (14%) were persistently infected carriers 10.5 months post-outbreak. There was no statistical difference between subclinical and clinically infected animals in the duration of the carrier state. However, prevalence of NSP-ELISA antibodies differed significantly between subclinical and clinically infected animals 12 months after the outbreak with 83% seroprevalence amongst clinically infected cattle compared to 69% of subclinical animals. This study further elucidates within-herd FMD transmission dynamics during the acute-phase and characterizes duration of FMDV persistence and seroprevalence of FMD under natural conditions in an endemic setting.
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Affiliation(s)
- S S Hayer
- UMN, STEMMA Laboratory, Veterinary Population Medicine, University of Minnesota, St Paul, MN, USA
| | - K VanderWaal
- UMN, STEMMA Laboratory, Veterinary Population Medicine, University of Minnesota, St Paul, MN, USA
| | - R Ranjan
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - J K Biswal
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - S Subramaniam
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - J K Mohapatra
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - G K Sharma
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - M Rout
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - B B Dash
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - B Das
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - B R Prusty
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - A K Sharma
- ICAR-Indian Veterinary Research Institute, Mukteshwar, Nainital, Uttarakhand, India
| | - C Stenfeldt
- UMN, STEMMA Laboratory, Veterinary Population Medicine, University of Minnesota, St Paul, MN, USA.,Foreign Animal Disease Research Unit, USDA-ARS, Plum Island Animal Disease Center, Greenport, NY, USA
| | - A Perez
- UMN, STEMMA Laboratory, Veterinary Population Medicine, University of Minnesota, St Paul, MN, USA
| | - A H Delgado
- Center for Epidemiology and Animal Health, APHIS, USDA, Fort Collins, CO, USA
| | - M K Sharma
- ABIS Dairy, Rajnandgaon, Chhattisgarh, India
| | - L L Rodriguez
- Foreign Animal Disease Research Unit, USDA-ARS, Plum Island Animal Disease Center, Greenport, NY, USA
| | - B Pattnaik
- ICAR-Directorate of Foot and Mouth Disease, Mukteshwar, Nainital, Uttarakhand, India
| | - J Arzt
- Foreign Animal Disease Research Unit, USDA-ARS, Plum Island Animal Disease Center, Greenport, NY, USA
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Das B, Kothiala A, Mahajan A, Goel G, Garg A. Letter re: Evaluation of hyperacute infarct volume using ASPECTS and brain CT perfusion core volume. Neurology 2017; 89:2397. [DOI: 10.1212/wnl.0000000000004702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Affiliation(s)
- Tapatosh Sadhu
- Department of Computer Science and EngineeringMaulana Abul Kalam Azad University of TechnologyBF‐142, Sector‐1, SaltlakeKolkata 700064West BengalIndia
| | - Biplab Das
- Department of Computer Science and EngineeringMaulana Abul Kalam Azad University of TechnologyBF‐142, Sector‐1, SaltlakeKolkata 700064West BengalIndia
| | - Debashis De
- Department of Computer Science and EngineeringMaulana Abul Kalam Azad University of TechnologyBF‐142, Sector‐1, SaltlakeKolkata 700064West BengalIndia
| | - Jadav Chandra Das
- Department of Computer Science and EngineeringMaulana Abul Kalam Azad University of TechnologyBF‐142, Sector‐1, SaltlakeKolkata 700064West BengalIndia
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Mahajan A, Goel G, Das B. Critical carotid bulb stenosis with intraluminal thrombus: Importance of delayed carotid stenting. J Neuroradiol 2017; 45:62-63. [PMID: 28964925 DOI: 10.1016/j.neurad.2017.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/17/2017] [Accepted: 09/05/2017] [Indexed: 11/19/2022]
Affiliation(s)
- Anshu Mahajan
- Neurointervention surgery, Institute of Neuroscience, Medanta, The Medicity, Gurgaon, 122001 Haryana, India.
| | - Gaurav Goel
- Neurointervention surgery, Institute of Neuroscience, Medanta, The Medicity, Gurgaon, 122001 Haryana, India.
| | - Biplab Das
- Neurointervention surgery, Institute of Neuroscience, Medanta, The Medicity, Gurgaon, 122001 Haryana, India.
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