1
|
Sarkar J, Naskar A, Nath A, Gangopadhyay B, Tarafdar E, Das D, Chakraborty S, Chattopadhyay D, Acharya K. Innovative utilization of harvested mushroom substrate for green synthesis of silver nanoparticles: A multi-response optimization approach. Environ Res 2024; 248:118297. [PMID: 38281560 DOI: 10.1016/j.envres.2024.118297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/29/2023] [Accepted: 01/22/2024] [Indexed: 01/30/2024]
Abstract
In this work, harvested mushroom substrate (HMS) has been explored for the first time through a comprehensive optimization study for the green synthesis of silver nanoparticles (AgNPs). A multiple response central composite design with three parameters: pH of the reaction mixture, temperature, and incubation period at three distinct levels was employed in the optimization study. The particle size of AgNPs, UV absorbance, and the percentage of Ag/Cl elemental ratio were considered as the response parameters. For each response variable examined the model used was found to be significant (P < 0.05). The ideal conditions were: pH 8.9, a temperature of 59.4 °C, and an incubation period of 48.5 h. The UV-visible spectra of AgNPs indicated that the absorption maxima for AgNP-3 were 414 nm, 420 for AgNPs-2, and 457 for AgNPs-1. The XRD analysis of AgNPs-3 and AgNPs-2 show a large diffraction peak at ∼38.2°, ∼44.2°, ∼64.4°, and ∼77.4°, respectively, which relate to the planes of polycrystalline face-centered cubic (fcc) silver. Additionally, the XRD result of AgNPs-1, reveals diffraction characteristics of AgCl planes (111, 200, 220, 311, 222, and 400). The TEM investigations indicated that the smallest particles were synthesized at pH 9 with average diameters of 35 ± 6 nm (AgNPs-3). The zeta potentials of the AgNPs are -36 (AgNPs-3), -28 (AgNPs-2), and -19 (AgNPs-1) mV, respectively. The distinct IR peak at 3400, 1634, and 1383 cm-1 indicated the typical vibration of phenols, proteins, and alkaloids, respectively. The AgNPs were further evaluated against gram (+) strain Bacillus subtilis (MTCC 736) and gram (-) strain Escherichia coli (MTCC 68). All of the NPs tested positive for antibacterial activity against both bacterial strains. The study makes a sustainable alternative to disposing of HMS to achieve the Sustainable Development Goals (SDGs).
Collapse
Affiliation(s)
- Jit Sarkar
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, PIN-700019, India
| | - Arghya Naskar
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, PIN-700019, India
| | - Anirban Nath
- Department of Genetics and Plant Breeding, Institute of Agricultural Science, University of Calcutta, Kolkata, West Bengal, PIN-700019, India
| | - Bhuman Gangopadhyay
- Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, West Bengal, PIN-700019, India
| | - Entaj Tarafdar
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, PIN-700019, India
| | - Diptosh Das
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, PIN-700019, India
| | - Somsubhra Chakraborty
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur, West Bengal, PIN-721302, India
| | - Dipankar Chattopadhyay
- Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, West Bengal, PIN-700019, India; Center for Research in Nano Science and Nano Technology, University of Calcutta, Kolkata - 700106, India
| | - Krishnendu Acharya
- Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, PIN-700019, India.
| |
Collapse
|
2
|
Chakraborty S, Kopsco H, Evans C, Mateus-Pinilla N, Smith R. Assessing knowledge gaps and empowering Extension workers in Illinois with information on ticks and tickborne diseases through KAP surveys. Heliyon 2024; 10:e25789. [PMID: 38352775 PMCID: PMC10862665 DOI: 10.1016/j.heliyon.2024.e25789] [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: 10/19/2023] [Revised: 01/19/2024] [Accepted: 02/02/2024] [Indexed: 02/16/2024] Open
Abstract
Tickborne diseases (TBDs) are increasingly prevalent in Illinois and the Upper Midwest region. People who work in occupations that require time outdoors in agricultural or natural settings, such as some Extension workers, are at risk of tick bites and TBDs. Additionally, Extension workers are often a primary source of information about ticks and TBDs in rural communities. However, there is limited information on the level of awareness about ticks and TBDs in the Extension community. The goals of this study were to sequentially i) determine the baseline awareness of Extension workers in Illinois about ticks and TBDs using a knowledge, attitudes, and practices (KAP) survey tool, ii) provide comprehensive training on ticks and TBDs to this demographic, and iii) measure the uptake of knowledge after the training intervention through a post-training survey. The study period was from June 2022 until May 2023. We received 233 pre-training and 93 paired post-training survey responses. Most survey respondents were Extension volunteers, identified as women, and were over 50 years old. Knowledge about ticks and TBDs varied. We identified several gaps in their current tick awareness, most importantly, in tick prevention measures, tick identification, and TBDs in general. TBD knowledge, attitude, and practice scores all significantly improved after training (p < 0.001), with a mean difference of 10.47, 1.49, and 2.64 points, respectively. Additionally, both Extension professionals (79.2 %) and Extension volunteers (66.7 %) were more likely to feel confident in engaging with their stakeholders on ticks and TBDs after participating in training. Poisson models revealed that higher attitude and practice scores and greater self-reported knowledge were the factors most significantly associated with higher TBD knowledge. We found that greater concern for ticks and TBD (attitudes) and adherence to science-based prevention and management methods (practices) were also associated with higher knowledge scores. To our knowledge, this is the first study in Illinois to capture Extension workers' awareness of ticks and TBDs. The results highlight Extension workers' interest in filling knowledge gaps through learning, and the importance of training Extension workers to disseminate reliable and updated information on ticks and TBDs to their constituents, a critical step in preventing TBDs.
Collapse
Affiliation(s)
- S. Chakraborty
- Program in Ecology, Evolution & Conservation Biology, University of Illinois, Urbana Champaign, 505 S Goodwin Avenue, Urbana, IL, 61801, USA
| | - H. Kopsco
- Department of Ecology, Evolution and Environmental Biology, Columbia University, 10th floor Schermerhorn Ext., 1200 Amsterdam Ave, New York, NY, 10027, USA
- Prairie Research Institute, Illinois Natural History Survey, University of Illinois, Urbana Champaign, 1816 S Oak, Champaign, IL, 61820, USA
| | - C. Evans
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana Champaign, 354 State Highway 145 N, Simpson, IL, 62985, USA
| | - N. Mateus-Pinilla
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana Champaign, 354 State Highway 145 N, Simpson, IL, 62985, USA
- Prairie Research Institute, Illinois Natural History Survey, University of Illinois, Urbana Champaign, 1816 S Oak, Champaign, IL, 61820, USA
| | - R.L. Smith
- Department of Pathobiology, University of Illinois, Urbana Champaign, 2001 S Lincoln Ave, Urbana, IL, 61802, USA
| |
Collapse
|
3
|
Chakraborty S, Khandelwal A, Agarwalla R, Jamir L, Bhattacharyya H. ARTIFICIAL INTELLIGENCE: CREATING NEW PARADIGMS IN THE MANAGEMENT OF NON-COMMUNICABLE DISEASES. Georgian Med News 2023:200-202. [PMID: 38236124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The role of Artificial Intelligence (AI) in medical science is growing immensely. Since AI contains features that can address both preventive and therapeutic aspects of non-communicable diseases (NCDs), it can potentially lessen the massive burden of morbidity and mortality associated with NCDs. AI can help in various ways in NCDs including predicting disease occurrence, monitoring, ensuring treatment and follow-up of patients. Low- and middle-income countries can harness the benefit of AI for the management of chronic diseases and effectively address challenges like manpower shortage, accessibility to health care, etc. However, AI needs to be used responsibly and rationally in NCDs for its maximum benefit.
Collapse
Affiliation(s)
- S Chakraborty
- 1Department of Community and Family Medicine, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India
| | - A Khandelwal
- 2Department of Anaesthesiology, Critical Care and Pain Medicine, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India
| | - R Agarwalla
- 1Department of Community and Family Medicine, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India
| | - L Jamir
- 1Department of Community and Family Medicine, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India
| | - H Bhattacharyya
- 1Department of Community and Family Medicine, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India
| |
Collapse
|
4
|
Lavanya V, Nayak A, Deb Roy P, Dasgupta S, Dey S, Li B, Weindorf DC, Chakraborty S. A Smartphone-Enabled Imaging Device for Chromotropic Acid-Based Measurement of Nitrate in Soil Samples. Sensors (Basel) 2023; 23:7345. [PMID: 37687803 PMCID: PMC10490029 DOI: 10.3390/s23177345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/07/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023]
Abstract
In this study, a novel chromotropic acid-based color development method was proposed for quick estimation of soil nitrate (NO3-). The method utilized a 3D printed device integrated with the rear-end camera of a smartphone and a stand-alone application called SMART NP. By analyzing the mean Value (V) component of the sample's image, the SMART NP provides instant predictions of soil NO3- levels. The limit of detection was calculated as 0.1 mg L-1 with a sensitivity of 0.26 mg L-1. The device showed a % bias of 0.9% and a precision of 1.95%, indicating its reliability. Additionally, the device-predicted soil NO3- data, combined with kriging interpolation, showcased spatial variability in soil NO3- levels at the regional level. The study employed a Gaussian model of variogram for kriging, and the high Nugget/Sill ratio indicated low spatial autocorrelation, emphasizing the impact of management factors on the spatial distribution of soil NO3- content in the study area. Overall, the imaging device, along with geostatistical interpolation, provided a comprehensive solution for the rapid assessment of spatial variability in soil NO3-content.
Collapse
Affiliation(s)
- Veerabhadrappa Lavanya
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
| | - Anshuman Nayak
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
| | - Partha Deb Roy
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
- ICAR-Indian Institute of Water Management, Bhubaneswar 751023, India
| | - Shubhadip Dasgupta
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
- Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741252, India
| | - Subhadip Dey
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
| | - Bin Li
- Department of Experimental Statistics, Louisiana State University, Baton Rouge, LA 70803, USA;
| | - David C. Weindorf
- Department of Earth and Atmospheric Sciences, Central Michigan University, Mount Pleasant, MI 48859, USA;
| | - Somsubhra Chakraborty
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, India; (V.L.); (A.N.); (P.D.R.); (S.D.); (S.D.)
| |
Collapse
|
5
|
Namgial T, Singh AK, Singh NP, Francis A, Chattopadhyay D, Voloudakis A, Chakraborty S. Correction to: Differential expression of genes during recovery of Nicotiana tabacum from tomato leaf curl Gujarat virus infection. Planta 2023; 258:51. [PMID: 37490148 PMCID: PMC10368538 DOI: 10.1007/s00425-023-04206-z] [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] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Affiliation(s)
- T Namgial
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Athens, 11855, Greece
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - A K Singh
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - N P Singh
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - A Francis
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - D Chattopadhyay
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - A Voloudakis
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Athens, 11855, Greece.
| | - S Chakraborty
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
6
|
Namgial T, Singh AK, Singh NP, Francis A, Chattopadhyay D, Voloudakis A, Chakraborty S. Differential expression of genes during recovery of Nicotiana tabacum from tomato leaf curl Gujarat virus infection. Planta 2023; 258:37. [PMID: 37405593 PMCID: PMC10322791 DOI: 10.1007/s00425-023-04182-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/10/2023] [Indexed: 07/06/2023]
Abstract
MAIN CONCLUSION Nicotiana tabacum exhibits recovery response towards tomato leaf curl Gujarat virus. Transcriptome analysis revealed the differential expression of defense-related genes. Genes encoding for cysteine protease inhibitor, hormonal- and stress-related to DNA repair mechanism are found to be involved in the recovery process. Elucidating the role of host factors in response to viral infection is crucial in understanding the plant host-virus interaction. Begomovirus, a genus in the family Geminiviridae, is reported throughout the globe and is known to cause serious crop diseases. Tomato leaf curl Gujarat virus (ToLCGV) infection in Nicotiana tabacum resulted in initial symptom expression followed by a quick recovery in the systemic leaves. Transcriptome analysis using next-generation sequencing (NGS) revealed a large number of differentially expressed genes both in symptomatic as well as recovered leaves when compared to mock-inoculated plants. The virus infected N. tabacum results in alteration of various metabolic pathways, phytohormone signaling pathway, defense related protein, protease inhibitor, and DNA repair pathway. RT-qPCR results indicated that Germin-like protein subfamily T member 2 (NtGLPST), Cysteine protease inhibitor 1-like (NtCPI), Thaumatin-like protein (NtTLP), Kirola-like (NtKL), and Ethylene-responsive transcription factor ERF109-like (NtERTFL) were down-regulated in symptomatic leaves when compared to recovered leaves of ToLCGV-infected plants. In contrast, the Auxin-responsive protein SAUR71-like (NtARPSL) was found to be differentially down-regulated in recovered leaves when compared to symptomatic leaves and the mock-inoculated plants. Lastly, Histone 2X protein like (NtHH2L) gene was found to be down-regulated, whereas Uncharacterized (NtUNCD) was up-regulated in both symptomatic as well as recovered leaves compared to the mock-inoculated plants. Taken together, the present study suggests potential roles of the differentially expressed genes that might govern tobacco's susceptibility and/or recovery response towards ToLCGV infection.
Collapse
Affiliation(s)
- T Namgial
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Athens, 11855, Greece
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - A K Singh
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - N P Singh
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - A Francis
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - D Chattopadhyay
- Laboratory of Plant Molecular Biology, National Institute of Plant Genome Research, New Delhi, 110067, India
| | - A Voloudakis
- Laboratory of Plant Breeding and Biometry, Department of Crop Science, Agricultural University of Athens, Athens, 11855, Greece.
| | - S Chakraborty
- Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| |
Collapse
|
7
|
T Silva de Sá R, Tesser Antunes Prianti M, Andrade R, Oliveira Silva A, Rodrigues Batista É, Valentim Dos Santos J, Magno Silva F, Aurélio Carbone Carneiro M, Roberto Guimarães Guilherme L, Chakraborty S, C Weindorf D, Curi N, Henrique Godinho Silva S, Teixeira Ribeiro B. Detailed characterization of iron-rich tailings after the Fundão dam failure, Brazil, with inclusion of proximal sensors data, as a secure basis for environmental and agricultural restoration. Environ Res 2023; 228:115858. [PMID: 37062481 DOI: 10.1016/j.envres.2023.115858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/27/2023] [Accepted: 04/04/2023] [Indexed: 05/16/2023]
Abstract
Following the Fundão dam failure in Brazil, 60 million m3 of iron-rich tailings were released impacting an extensive area. After this catastrophe, a detailed characterization and monitoring of iron-rich tailings is required for agronomic and environmental purposes. This can be facilitated by using proximal sensors which have been an efficient, fast, and cost-effective tool for eco-friendly analysis of soils and sediments. This work hypothesized that portable X-ray fluorescence (pXRF) spectrometry combined with a pocket-sized (Nix™ Pro) color sensor and benchtop magnetic susceptibilimeter can produce substantial data for fast and clean characterization of iron-rich tailings. The objectives were to differentiate impacted and non-impacted areas (soils and sediments) based on proximal sensors data, and to predict attributes of agronomic and environmental importance. A total of 148 composite samples were collected on totally impacted, partially impacted, and non-impacted areas (natural soils). The samples were analyzed via pXRF to obtain the total elemental composition; via Nix™ Pro color sensor to obtain the red (R), green (G), and blue (B) parameters; and assessed for magnetic susceptibility (MS). The same samples used for analyses via the aforementioned sensors were wet-digested (USEPA 3051a method) followed by ICP-OES quantification of potentially toxic elements. Principal component analysis was performed to differentiate impacted and non-impacted areas. The pXRF data alone or combined with other sensors were used to predict soil agronomic properties and semi-total concentration of potentially toxic elements via random forest regression. For that, samples were randomly separated into modeling (70%) and validation (30%) datasets. The pXRF proved to be an efficient method for rapid and eco-friendly characterization of iron-rich tailings, allowing a clear differentiation of impacted and non-impacted areas. Also, important soil agronomic properties (clay, cation exchange capacity, soil organic carbon, pH and macronutrients availability) and semi-total concentrations of Ba, Pb, Cr, V, Cu, Co, Ni, Mn, Ti, and Li were accurately predicted (based upon the lowest RMSE and highest R2 and RPD values). Sensor data fusion (pXRF + Nix Pro + MS) slightly improved the accuracy of predictions. This work highlights iron-rich tailings from the Fundão dam failure can be in detail characterized via pXRF ex situ, providing a secure basis for complementary studies in situ aiming at identify contaminated hot spots, digital mapping of soil and properties variability, and embasing pedological, agricultural and environmental purposes.
Collapse
Affiliation(s)
| | | | - Renata Andrade
- Department of Soil Science, Federal University of Lavras, Lavras, 37200000, Brazil
| | - Aline Oliveira Silva
- Department of Soil Science, Federal University of Lavras, Lavras, 37200000, Brazil
| | | | | | - Fernanda Magno Silva
- Department of Soil Science, Federal University of Lavras, Lavras, 37200000, Brazil
| | | | | | | | - David C Weindorf
- Department of Earth and Atmospheric Sciences, Central Michigan University, Mount Pleasant, MI, 48859, USA
| | - Nilton Curi
- Department of Soil Science, Federal University of Lavras, Lavras, 37200000, Brazil
| | | | | |
Collapse
|
8
|
Pandey A, Bhushan R, Rohilla A, Chakraborty S, Singh RP, Ojha S, Mehta D, Kumar S, Chamoli SK. Fabrication of thin Molybdenum backed target using rolling method. Appl Radiat Isot 2023; 199:110860. [PMID: 37290268 DOI: 10.1016/j.apradiso.2023.110860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 02/15/2023] [Accepted: 04/08/2023] [Indexed: 06/10/2023]
Abstract
A successful attempt was made to fabricate a thin foil of natural Mo target on a thick Au backing with Indium in between to improve adhesion between the foils. Rolling at elevated temperature was considered to fabricate Mo foil while gold foil was fabricated employing conventional rolling technique. The heating of Mo foil under natural environment lead to the oxidation or carbonization on foil surface which was confirmed through Energy Dispersive X-ray Spectroscopy (EDS) measurements. Indium of thickness ∼86μg/cm2 was evaporated on Mo foil to improve adhesion between Mo and Au foils. The characterization of fabricated thin Mo foil was done using the Energy Dispersive X-ray Spectroscopy (EDS) and the Scanning Electron microscope (SEM) techniques. Thickness measurement of the target (Mo-Au) was done using Energy Dispersive X-ray Fluorescence (EDXRF) technique, in the measurements the thickness of the Mo foil and of gold backing are found out to be 1.3 mg/cm2 and 9 mg/cm2 respectively.
Collapse
Affiliation(s)
- Anand Pandey
- Department of Physics & Astrophysics, University of Delhi, New Delhi, India
| | - Ravi Bhushan
- Department of Physics & Astrophysics, University of Delhi, New Delhi, India
| | - Aman Rohilla
- Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of China
| | - S Chakraborty
- Variable Energy Cyclotron Centre, Kolkata 700064, India
| | - R P Singh
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, India
| | - Sunil Ojha
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, India
| | - D Mehta
- Department of Physics, Punjab University, Chandigarh, India
| | - Sanjeev Kumar
- Goswami Ganesh Dutta Sanatan Dharma College, Sector 32 Chandigarh, India
| | - S K Chamoli
- Department of Physics & Astrophysics, University of Delhi, New Delhi, India.
| |
Collapse
|
9
|
Baker J, Chakraborty S, Buccoliero R, Thakur S. Wilson's disease - a tricky diagnosis on the acute take. Acute Med 2023; 22:96-100. [PMID: 37306135 DOI: 10.52964/amja.0941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Wilson's disease is a rare genetic disorder that affects copper metabolism in the body, leading to excess copper accumulation in various organs, including the liver and brain. It often presents to both primary and secondary care, with a combination of liver disease and neurological or psychiatric symptoms, but the presentation can be highly variable. Early recognition and treatment of Wilson's disease is important to prevent critical hepatic and neurological complications. In this case report, we describe the presentation of an 18-year-old male university student with a combination of dysphagia, tremors, and slurred speech, which progressed over several months. Through a series of investigations, the patient was diagnosed with Wilson's disease and received appropriate treatment. This report highlights the importance of considering Wilson's disease in patients with a wide range of symptoms and the need for a pragmatic approach to diagnosis, including routine and additional testing as necessary.
Collapse
Affiliation(s)
- J Baker
- Harrogate and District NHS Foundation Trust
| | | | | | - S Thakur
- Harrogate and District NHS Foundation Trust
| |
Collapse
|
10
|
Chakraborty S, Mann IR, Watt CEJ, Rae IJ, Olifer L, Ozeke LG, Sandhu JK, Mauk BH, Spence H. Intense chorus waves are the cause of flux-limiting in the heart of the outer radiation belt. Sci Rep 2022; 12:21717. [PMID: 36522393 PMCID: PMC9755534 DOI: 10.1038/s41598-022-26189-9] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Chorus waves play a key role in outer Van Allen electron belt dynamics through cyclotron resonance. Here, we use Van Allen Probes data to reveal a new and distinct population of intense chorus waves excited in the heart of the radiation belt during the main phase of geomagnetic storms. The power of the waves is typically ~ 2-3 orders of magnitude greater than pre-storm levels, and are generated when fluxes of ~ 10-100 keV electrons approach or exceed the Kennel-Petschek limit. These intense chorus waves rapidly scatter electrons into the loss cone, capping the electron flux to a value close to the limit predicted by Kennel and Petschek over 50 years ago. Our results are crucial for understanding the limits to radiation belt fluxes, with accurate models likely requiring the inclusion of this chorus wave-driven flux-limiting process, that is independent of the acceleration mechanism or source responsible for enhancing the flux.
Collapse
Affiliation(s)
- S. Chakraborty
- grid.42629.3b0000000121965555Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK
| | - I. R. Mann
- grid.42629.3b0000000121965555Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK ,grid.17089.370000 0001 2190 316XDepartment of Physics, University of Alberta, Edmonton, AB Canada
| | - C. E. J. Watt
- grid.42629.3b0000000121965555Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK
| | - I. J. Rae
- grid.42629.3b0000000121965555Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK
| | - L. Olifer
- grid.17089.370000 0001 2190 316XDepartment of Physics, University of Alberta, Edmonton, AB Canada
| | - L. G. Ozeke
- grid.17089.370000 0001 2190 316XDepartment of Physics, University of Alberta, Edmonton, AB Canada
| | - J. K. Sandhu
- grid.42629.3b0000000121965555Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, UK
| | - B. H. Mauk
- grid.21107.350000 0001 2171 9311Applied Physics Laboratory, Johns Hopkins University, Laurel, MD USA
| | - H. Spence
- grid.167436.10000 0001 2192 7145Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH USA
| |
Collapse
|
11
|
Dorjee L, Chakraborty S, Bhatia A, Manu CB, Medhi R. Migrated and Impacted Foreign Body of Retropharyngeal Space: A Case Report. Indian J Otolaryngol Head Neck Surg 2022; 74:5664-5667. [PMID: 36742513 PMCID: PMC9895500 DOI: 10.1007/s12070-021-02928-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 10/14/2021] [Indexed: 02/07/2023] Open
Abstract
Foreign body upper aerodigestive tract is a common presentation but foreign body migrating into retropharyngeal space is not only uncommon, but its management also differs and is challenging too. Here we present a case of a foreign body migrating into the retropharyngeal space which was removed intraorally. A 28- year old male patient presented with complaints of pain while swallowing following consumption of sausage and pork two days earlier to the onset of symptoms. X-Ray Neck AP and lateral view were done which revealed a thin metallic foreign body at the level of the T4 vertebra. Upper gastrointestinal endoscopy and rigid esophagoscopy were done in which a foreign body was not visualized in the esophageal lumen. NCCT neck was done which gave precise location and was removed intraorally with the patient in Rose position. A repeat x-ray was done on the 5th day which revealed no foreign body, the patient was discharged on the 7th day. Although the upper aerodigestive tract foreign body is common, foreign body migrating to the posterior pharyngeal wall or into the retropharyngeal space is not common and it is difficult to remove a migrated foreign body many cases requiring open procedures, thoracoscopy, thoracotomy.
Collapse
Affiliation(s)
- L. Dorjee
- Dept. of Otorhinolaryngology, NEIGRIHMS, Shillong, Meghalaya 793018 India
| | - S. Chakraborty
- Dept. of Otorhinolaryngology, NEIGRIHMS, Shillong, India
| | - A. Bhatia
- Dept. of Otorhinolaryngology, NEIGRIHMS, Shillong, India
| | - C. B. Manu
- Dept. of Otorhinolaryngology, NEIGRIHMS, Shillong, India
| | - R. Medhi
- Dept. of Otorhinolaryngology, NEIGRIHMS, Shillong, India
| |
Collapse
|
12
|
Hajra A, Patel N, Bandyopadhyay D, Chakraborty S, Goel A, Gupta R, Amgai B, Malik A. Incidence of in-hospital all-cause mortality, resource utilization and complications in patients with adult congenital heart disease undergoing TAVR-a national inpatient sample study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The prevalence of congenital heart disease (CHD) in adults in the United States is approximately 1.4 million. (1) With the advancement in diagnostic modalities and advanced treatments, including minimally invasive techniques, the life expectancy of individuals with CHD has greatly improved. (2) As these patients enter the 8th decade of their lives, the risk of calcification and aortic stenosis increases like the population without CHD. Current evidence supports transcatheter aortic valve replacement (TAVR) over surgical aortic valve replacement in individuals with moderate to high surgical risk. (3) Adults with acyanotic CHD (ACHD) with a higher risk for surgical complications are candidates for consideration of TAVR. There are sparse data about the cardiovascular outcome in these patients.
Purpose
With this National inpatient sample (NIS) study, the authors have shown the incidence of in-hospital all-cause mortality, resource utilization, and complications in adult patients with ACHD undergoing TAVR.
Methods
NIS 2016–2018 were utilized to conduct the study. Analyses were performed using STATA, version 16.0. Using appropriate ICD-10-PCS codes, authors identified adult patients with ACHD undergoing TAVR. The primary outcome of the study is to identify the impact of ACHD on all-cause in-hospital mortality and complications. Secondary outcomes of interest were resource utilization.
Results
134,170 patients were identified who had TAVR done between 2016–2018. Patients aged ≤18 years were excluded (N=25). Out of 134,170 patients that underwent TAVR, 1,170 (0.87%) were noted to have ACHD. Using the greedy algorithm, 1,115 matched pairs were generated. The ACHD group had a higher burden of co-morbidities including atrial fibrillation (46.2% vs. 38.8%, p=0.016), pulmonary hypertension (27.4% vs. 17.5%, p<0.001), metabolic syndrome (1.3% vs. 0.3%, p=0.005), peripheral vascular disease (29.5% vs. 24.1%, p=0.049), alcohol use disorder (3.0% vs. 1.3%, p=0.018), coagulation disorder (22.7% vs. 12.8%, p<0.001), drug abuse (1.3% vs. 0.4%, p=0.043), liver disease (7.3% vs. 3.1%, p<0.001) and electrolyte disturbances (20.5% vs. 14.9%, p=0.017). We also noted a possible trend towards higher complication odds (cardiac complications such as the need for pericardial drain or cardiac implantable electronic device and cardiac arrest) in patients with ACHD undergoing TAVR without statistical significance based on multivariate analysis. On propensity matching, no difference was found in the incidence of overall cardiac complications between patients with ACHD and patients without ACHD, except STEMI (OR 4.16, 95% CI, 1.08–16.00, p=0.038).
Conclusion(s)
The study points towards the possible safety of pursuing TAVR in ACHD patients provided adequate technical support and operator competency.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- A Hajra
- Albert Einstein College of Medicine, Internal Medicine , Bronx , United States of America
| | - N Patel
- University of Kansas Hospital, Cardiology , Kansas City , United States of America
| | - D Bandyopadhyay
- New York Medical College, Cardiology , Valhalla , United States of America
| | - S Chakraborty
- Miami Valley Hospital, Internal Medicine , Columbus , United States of America
| | - A Goel
- New York Medical College, Cardiology , Valhalla , United States of America
| | - R Gupta
- Lehigh Valley Hospital, Cardiology , Allentown , United States of America
| | - B Amgai
- The Wright Center for Graduate Medical Education, Internal Medicine , Scranton , United States of America
| | - A Malik
- New York Medical College, Cardiology , Valhalla , United States of America
| |
Collapse
|
13
|
Goel A, Malik A, Bandyopadhyay D, Chakraborty S, Gupta R, Hajra A, Abbott JD, Ahmad H. Same-day discharge following transcatheter aortic valve replacement: a propensity-matched analysis from national readmission database. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The length of hospital stay following transcatheter aortic valve replacement (TAVR) has decreased in recent years, and next-day discharge strategy is being increasingly adopted in some centers. Whether it is safe to further expedite discharge post-TAVR in selected patients by allowing discharge on the same day as the procedure remains unknown. In addition to potentially decreasing hospitalization costs, it could also limit the inpatient footprint and strain on healthcare resources.
Purpose
The purpose of our study was to compare the 30-day readmission rate in patients receiving TAVR who were discharged the same day (same-day discharge or SDD group) with those who were discharged on a different day (different-day discharge or DDD group). Additionally, we aimed to identify risk factors for readmission after TAVR.
Methods
We used the United States Nationwide Readmission Database to identify all adults who underwent elective TAVR in the years 2015–2019. The primary outcome of this study was all-cause 30-day readmission rate. The secondary outcomes were total hospital costs for the index admission, and risk factors for 30-day readmission. Propensity score matching was conducted to compare the SDD and DDD groups. Independent risk factors of 30-day readmission were identified using multivariate Cox proportional hazards regression analysis of the unmatched cohort.
Results
Of the 196,618 patients who received TAVR (mean age 79.5±8.4 years, 45.0% females), 245 (0.12%) patients were discharged on the same day they received TAVR (SDD group), and the remaining 196,373 were discharged on a different day (DDD group). In the DDD group, the median length of hospital stay was 2 days (interquartile range 1–4 days). A 1:3 propensity score analysis generated a matched cohort including 245 and 889 patients in the SDD and DDD groups, respectively. The 30-day readmission rate was similar between the SDD and DDD groups (11.0% versus 10.8%, hazard ratio [HR] 1.01, 95% confidence interval [CI] 0.59–1.71, p=0.989). Hospitalization costs were significantly lower in the SDD group than the DDD group ($37,811±18,029 versus $49,130±27,007, p<0.001) (see Picture 1). Age, female gender, history of diabetes, chronic kidney disease, chronic pulmonary disease, oxygen use, prior stroke, peripheral vascular disease, anemia, liver disease, and cancer were found to be independent risk factors for 30-day readmission after TAVR (see Picture 2).
Conclusion
In this large nationwide database analysis, patients receiving uncomplicated TAVR who were discharged on the same day as the procedure had a similar all-cause 30-day readmission rate and significantly lower hospital costs compared to those discharged on a different day. These results indicate that same-day discharge after TAVR may be a safe and feasible option in carefully selected patients.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- A Goel
- Westchester Medical Center , Valhalla , United States of America
| | - A Malik
- Westchester Medical Center , Valhalla , United States of America
| | - D Bandyopadhyay
- Westchester Medical Center , Valhalla , United States of America
| | - S Chakraborty
- Miami Valley Hospital , Columbus , United States of America
| | - R Gupta
- Lehigh Valley Hospital , Allentown , United States of America
| | - A Hajra
- Jacobi Medical Center/Albert Einstein College of Medicine , New York , United States of America
| | - J D Abbott
- Brown University , Providence , United States of America
| | - H Ahmad
- Westchester Medical Center , Valhalla , United States of America
| |
Collapse
|
14
|
De P, Deb S, Deb D, Chakraborty S, Santra P, Dutta P, Hoque A, Choudhury A. Soil quality under different land uses in eastern India: Evaluation by using soil indicators and quality index. PLoS One 2022; 17:e0275062. [PMID: 36137131 PMCID: PMC9499302 DOI: 10.1371/journal.pone.0275062] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/09/2022] [Indexed: 12/05/2022] Open
Abstract
Indian soils are inherently poor in quality due to the warm climate and erosion. Conversion of land uses like forests to croplands and faulty management practices in croplands further cause soil degradation. This study aimed to understand the extent of these impacts in a small representative part of eastern India, covering Himalayan terai and nearing alluvial plains. Soils were collected from (i) forests, (ii) croplands (under agricultural practices for more than 50–60 years) and (iii) converted lands (converted from forests to croplands or tea gardens over the past 15–20 years). Different soil quality indicators were assessed and soil quality index (SQI) was generated to integrate, scale and allot a single value per soil. Results indicated that continuous organic matter deposition and no disturbances consequence the highest presence of soil carbon pools, greater aggregation and maximum microbial dynamics in forest soils whereas high application of straight fertilizers caused the highest available nitrogen and phosphorus in cropland soils. The SQI scorebook indicated the best soil quality under forests ( x¯ 0.532), followed by soils of converted land ( x¯ 0.432) and cropland ( x¯ 0.301). Comparison of the SQI spatial distribution with land use and land cover confirmed the outcome. Possibly practices like excessive tillage, high cropping intensity, no legume in crop rotations, cultivation of heavy feeder crops caused degraded soil quality in croplands. This study presented an example of soil quality degradation in India due to land use change and faulty management practices. Such soil degradation on a larger scale may affect future food security.
Collapse
Affiliation(s)
- Parijat De
- Uttar Banga Krishi Viswavidyalaya, Cooch Behar, India
| | - Shovik Deb
- Uttar Banga Krishi Viswavidyalaya, Cooch Behar, India
- * E-mail:
| | - Dibyendu Deb
- ICAR-Indian Agricultural Research Institute, Gogamukh, Assam, India
| | | | - Priyabrata Santra
- ICAR-Central Arid Zone Research Institute, Jodhpur, Rajasthan, India
| | | | - Anarul Hoque
- Uttar Banga Krishi Viswavidyalaya, Cooch Behar, India
| | | |
Collapse
|
15
|
Agarwala V, MV C, Daga A, Basu M, Ganguly M, Kumar S, Mandal K, Chakraborty S, Sunani D, Choudhary N, Basu K, Das S, Mallik S. 1578P Scalp cooling system for prevention of chemotherapy induced alopecia: A single center one-year prospective observational study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
16
|
Chakraborty S, Bhattacharya S. Remote working in India during the COVID-19 crisis. CM 2022. [DOI: 10.18137/cardiometry.2022.23.369380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
India has been reeling from the effects of the COVID-19 pandemic and has enforced a nationwide lockdown to ensure the spread is contained, and the situation is under control. This has paved the way for corporate across the length and breadth of the country to embrace remote working as the only feasible option to continue their business. Earlier, it used to be the IT sector employees and a handful of employees from other industries who had the privilege of working remotely. Now, with remote working becoming the norm, we aim to capture how it has affected people’s working style and if interactions with family at home during work hours affect their work. We also aim to find out whether performance takes a hit due to the absence of co-workers.A questionnaire was filled up by employees working from home that sought out details about their working style, daily routine, interactions with other people (family member or colleague), and their thoughts on the remote working lifestyle. The major factors were measured on a five-point Likert scale.People work for a longer time when working from home, due to distractions caused by interactions with family members or other people and also the absence of colleagues causes problems to be solved at a slower pace. Women work longer hours when compared to men, additionally due to household chores. The absence of colleagues coupled with distractions at home cause people to prefer working from the office rather than from home. This study would help identify what sort of impact remote working has on an employee’s performance and how it can affect the working style.The paper analyses the effect of remote working and the presence of family at home on an employee’s performance.
Collapse
|
17
|
Chakraborty H, Kayal T, Lianthuamluaia L, Sarkar UK, Das AK, Chakraborty S, Sahoo BK, Mondal K, Mandal S, Das BK. Use of geographical information systems (GIS) in assessing ecological profile, fish community structure and production of a large reservoir of Himachal Pradesh. Environ Monit Assess 2022; 194:643. [PMID: 35930070 DOI: 10.1007/s10661-022-10292-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The present study demonstrates the spatial analysis and mapping of fish and different measures of environmental parameters and fish diversity of Pong reservoir, Himachal Pradesh, using Kriging spatial interpolation methods for geographical information system mapping. Seasonal data on environmental parameters, potential fish habitat and fish diversity was collected from lentic (dam), lentic (reservoir), transitional and lotic zone of the reservoir.. Important environmental parameters like water temperature, dissolved oxygen, electrical conductivity, water depth and transparency showed variations across the different zones of the reservoir. The sediment of the reservoir was sandy clay loam in nature as per texture analysis. Fish species richness, Shannon index and evenness index showed a similarity of the lotic and lentic (reservoir) zones of the reservoir. Six potential fish breeding grounds were identified in the reservoir indicating high conservation significance. The analysis of data showed a declining trend in fish production from 456.9 tonnes during the decade 1976-1987 to 347.91 tonnes during 2009-2020. The factors like anthropogenic climate change, predation of a stocked fish juvenile by water birds, undersized fish stocking and unscientific management are the probable reasons for the decreasing fish production. The spatial variation pattern of the water spread area, environmental parameters, fish catch and potential fish breeding grounds depicted in the GIS platform can be used as an important information base by the policy makers for fisheries management. The stocking of large size fish as a stocking material and adequate protection of the potential fish breeding grounds are the key advisories for the sustainable enhancement of fisheries as well as conservation.
Collapse
Affiliation(s)
- H Chakraborty
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - T Kayal
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - L Lianthuamluaia
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - U K Sarkar
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - A K Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - S Chakraborty
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - B K Sahoo
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - K Mondal
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - S Mandal
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India
| | - B K Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, India.
| |
Collapse
|
18
|
Chakraborty S, Qian L, Baker JBH, Ruohoniemi JM, Kuyeng K, Mclnerney JM. Driving Influences of the Doppler Flash Observed by SuperDARN HF Radars in Response to Solar Flares. J Geophys Res Space Phys 2022; 127:e2022JA030342. [PMID: 35864909 PMCID: PMC9286435 DOI: 10.1029/2022ja030342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Sudden enhancement in high-frequency absorption is a well-known impact of solar flare-driven Short-Wave Fadeout (SWF). Less understood, is a perturbation of the radio wave frequency as it traverses the ionosphere in the early stages of SWF, also known as the Doppler flash. Investigations have suggested two possible sources that might contribute to it's manifestation: first, enhancements of plasma density in the D-and lower E-regions; second, the lowering of the F-region reflection point. Our recent work investigated a solar flare event using first principles modeling and Super Dual Auroral Radar Network (SuperDARN) HF radar observations and found that change in the F-region refractive index is the primary driver of the Doppler flash. This study analyzes multiple solar flare events observed across different SuperDARN HF radars to determine how flare characteristics, properties of the traveling radio wave, and geophysical conditions impact the Doppler flash. In addition, we use incoherent scatter radar data and first-principles modeling to investigate physical mechanisms that drive the lowering of the F-region reflection points. We found, (a) on average, the change in E- and F-region refractive index is the primary driver of the Doppler flash, (b) solar zenith angle, ray's elevation angle, operating frequency, and location of the solar flare on the solar disk can alter the ionospheric regions of maximum contribution to the Doppler flash, (c) increased ionospheric Hall and Pedersen conductance causes a reduction of the daytime eastward electric field, and consequently reduces the vertical ion-drift in the lower and middle latitude ionosphere, which results in lowering of the F-region ray reflection point.
Collapse
Affiliation(s)
- S. Chakraborty
- Bradley Department of Electrical and Computer EngineeringVirginia TechBlacksburgVAUSA
| | - L. Qian
- National Center for Atmospheric ResearchBoulderCOUSA
| | - J. B. H. Baker
- Bradley Department of Electrical and Computer EngineeringVirginia TechBlacksburgVAUSA
| | - J. M. Ruohoniemi
- Bradley Department of Electrical and Computer EngineeringVirginia TechBlacksburgVAUSA
| | - K. Kuyeng
- Radio Observatorio de JicamarcaInstituto Geofisico del PeruLimaPeru
| | | |
Collapse
|
19
|
Huq FN, Momenuzzaman NAM, Chowdhury AW, Hoque MM, Khan KN, Begum F, Shafique AM, Anis R, Rahman MA, Nahar S, Chakraborty S, Ahmad T, Khan TA, Ullah R, Rahman MM. Effect of telephone-monitored home-based cardiac rehabilitation exercise on functional capacity and quality of life in heart failure patients in a lower-middle-income country. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Chronic heart failure (CHF) prevails as one of the major cardiovascular diseases in lower-middle-income countries (LMICs) like Bangladesh. Home-Based Cardiac Rehabilitation (HBCR) is a cost-effective method of secondary prevention of chronic heart failure which, if provided, might not only improve the health status of the patients but might also reduce the financial and hospitalization burden on the health care system of these countries. The study aims to assess the scope and benefits of HBCR in such low resource settings.
Purpose
The study evaluates the effect of telephone-monitored HBCR exercise programme in improving the functional capacity and quality of life (QoL) in patients of CHF with reduced ejection fraction due to ischemic heart disease (IHD).
Method
This self-controlled interventional study was conducted from August 2019 to July 2020 at a heart failure clinic, a tertiary healthcare centre in Bangladesh. A total of 115 patients of CHF with ejection fraction <40% and in NYHA class II and III were included in the study according to selection criteria. The functional capacity of the patients was evaluated by NYHA classification and 6-minute walk test. The quality of life of the patients was evaluated by Minnesota Living with Heart Failure Questionnaire (MLHFQ). All patients were advised to perform HBCR exercise as per recommended guideline and were telephone-monitored 2-weekly. After the 3-months study period, the participants were divided into compliant and partial compliant groups based on their adherence to the guideline. Repeat evaluation of patients' condition was carried out. Results were then compared within the groups and data was analyzed through appropriate statistical methods.
Results
Significant improvement of NYHA class (p<0.05), and 6-minute walk test distance (6MWTD) (1102.01±215.90 feet vs 1243.30±217.86 feet; p<0.001) were noticed after the rehabilitation programme. Improvement of total MLHFQ score was also observed (35.53±14 vs 28.22±12.84; p<0.001) at 3-months follow up. The functional capacity and quality of life of the patients in both the compliant and partially compliant groups showed significant improvement after the rehabilitation programme (p<0.001); though no difference was found in the indicators when compared between compliant vs partially compliant groups after rehabilitation except for 6MWTD (1302.86±219.61 feet vs 1230.71±212.284 feet, p<0.001).
Conclusion
From the results, it can be concluded that any amount of routine exercise tends to improve quality of life and symptoms in patients of chronic heart failure with reduced ejection fraction. However, to achieve the best effect in functional capacity and overall health status, the addition of a structured exercise programme like HBCR can be beneficial for proper rehabilitation in low resource settings. Further validation of the results is recommended through randomized control trials in larger study groups.
Collapse
Affiliation(s)
- FN Huq
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | | | - AW Chowdhury
- Dhaka Medical College Hospital, Cardiology, Dhaka, Bangladesh
| | - MM Hoque
- Bangabandhu Sheikh Mujib Medical University (BSMMU), Biochemistry, Dhaka, Bangladesh
| | - KN Khan
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - F Begum
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - AM Shafique
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - R Anis
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - MA Rahman
- Sorkari Karmachari Hospital, Cardiology, Dhaka, Bangladesh
| | - S Nahar
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | | | - T Ahmad
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - TA Khan
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - R Ullah
- United Hospital Ltd, Cardiology, Dhaka, Bangladesh
| | - MM Rahman
- Keraniganj Upazila Health Complex, Dhaka, Bangladesh
| |
Collapse
|
20
|
Chakraborty S. Monitoring COVID-19 Cases and Vaccination in Indian States and Union Territories Using Unsupervised Machine Learning Algorithm. Ann Data Sci 2022; 10:967-989. [PMID: 38625290 PMCID: PMC9065662 DOI: 10.1007/s40745-022-00404-w] [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] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 10/20/2021] [Accepted: 10/30/2021] [Indexed: 11/01/2022]
Abstract
The worldwide spread of the novel coronavirus originating from Wuhan, China led to an ongoing pandemic as COVID-19. The disease being a contagion transmitted rapidly in India through the people having travel histories to the affected countries, and their contacts that tested positive. Millions of people across all states and union territories (UT) were affected leading to serious respiratory illness and deaths. In the present study, two unsupervised clustering algorithms namely k-means clustering and hierarchical agglomerative clustering are applied on the COVID-19 dataset in order to group the Indian states/UTs based on the pandemic effect and the vaccination program from the period of March, 2020 to early June, 2021. The aim of the study is to observe the plight of each state and UT of India combating the novel coronavirus infection and to monitor their vaccination status. The research study will be helpful to the government and to the frontline workers coping to restrict the transmission of the virus in India. Also, the results of the study will provide a source of information for future research regarding the COVID-19 pandemic in India.
Collapse
Affiliation(s)
- S. Chakraborty
- Department of Mathematical and Computational Sciences, National Institute of Technology Karnataka, Mangalore, 575025 India
| |
Collapse
|
21
|
Borges CS, Vega R RA, Chakraborty S, Weindorf DC, Lopes G, Guimarães Guilherme LR, Curi N, Li B, Ribeiro BT. Pocket-sized sensor for controlled, quantitative and instantaneous color acquisition of plant leaves. J Plant Physiol 2022; 272:153686. [PMID: 35381493 DOI: 10.1016/j.jplph.2022.153686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 01/07/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
The color of plant leaves can be assessed qualitatively by color charts or after processing of digital images. This pilot study employed a novel pocket-sized sensor to obtain the color of plant leaves. In order to assess its performance, a color-dependent parameter (SPAD index) was used as the dependent variable, since there is a strong correlation between SPAD index and greenness of plant leaves. A total of 1,872 fresh and intact leaves from 13 crops were analyzed using a SPAD-502 meter and scanned using the Nix™ Pro color sensor. The color was assessed via RGB and CIELab systems. The full dataset was divided into calibration (70% of data) and validation (30% of data). For each crop and color pattern, multiple linear regression (MLR) analysis and multivariate modeling [least absolute shrinkage and selection operator (LASSO), and elastic net (ENET) regression] were employed and compared. The obtained MLR equations and multivariate models were then tested using the validation dataset based on r, R2, root mean squared error (RMSE), and mean absolute error (MAE). In both RGB and CIELab color systems, the Nix™ Pro color sensor was able to differentiate crops, and the SPAD indices were successfully predicted, mainly for mango, quinoa, peach, pear, and rice crops. Validation results indicated that ENET performed best in most crops (e.g., coffee, corn, mango, pear, rice, and soy) and very close to MLR in bean, grape, peach, and quinoa. The correlation between SPAD and greenness is crop-dependent. Overall, the Nix™ Pro color sensor was a fast, sensible and an easy way to obtain leaf color directly in the field, constituting a reliable alternative to digital camera imagery and associated image processing.
Collapse
Affiliation(s)
- Camila Silva Borges
- Department of Soil Science, Federal University of Lavras, Lavras, 37200-000, Minas Gerais State, Brazil
| | - Ruby Antonieta Vega R
- Department of Soil Science, Federal University of Lavras, Lavras, 37200-000, Minas Gerais State, Brazil
| | - Somsubhra Chakraborty
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, India
| | - David C Weindorf
- Department of Earth and Atmospheric Sciences, Central Michigan University, Mount Pleasant, MI, USA
| | - Guilherme Lopes
- Department of Soil Science, Federal University of Lavras, Lavras, 37200-000, Minas Gerais State, Brazil
| | | | - Nilton Curi
- Department of Soil Science, Federal University of Lavras, Lavras, 37200-000, Minas Gerais State, Brazil
| | - Bin Li
- Department of Experimental Statistics, Louisiana State University, Baton Rouge, LA, USA
| | - Bruno Teixeira Ribeiro
- Department of Soil Science, Federal University of Lavras, Lavras, 37200-000, Minas Gerais State, Brazil.
| |
Collapse
|
22
|
Rakshit A, Meena VS, Chakraborty S, Sarkar B, Ghosh S. Editorial: Adaptive Farming Sustainability Practices: Fundamentals to Advances. Front Sustain Food Syst 2022. [DOI: 10.3389/fsufs.2022.823437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Biswas S, Mukherjee A, Chakraborty S, Chaturvedi A, Samanta B, Khanra D, Ray S, Sharma RK. Impact of plasma glucose and duration of type 2 diabetes mellitus on SYNTAX Score II in patients suffering from non ST-elevation myocardial infarction. Kardiologiia 2022; 62:40-48. [PMID: 35414360 DOI: 10.18087/cardio.2022.3.n1799] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Aim The objective was to assess the correlation of fasting plasma glucose (FPG), HbA1c, and the duration of type 2 diabetes mellitus (T2DM) with SYNTAX score (SS) II in patients with non-ST elevation myocardial infarction (NSTEMI).Material and methods FPG and HbA1C were measured in 398 patients presenting with NSTEMI at admission. SS II was calculated using an online calculator. Patients were stratified according to SS II (≤21.5, 21.5-30.6, and ≥30.6), defined as SS II low, mid, and high, respectively.Results 37.7 % of subjects were diabetic. Correlations of FPG (R=0.402, R2=0.162, p<0.001) and HbA1c (R=0.359, R2=0.129, p<0.001) with SS II were weak in the overall population. Duration of T2DM showed very strong correlation with SS II (R=0.827, R2=0.347). For the prediction of high SS II in the study population, FPG≥98.5 mg / dl demonstrated a sensitivity of 58 % and a specificity of 60 %, and HbA1c ≥6.05 demonstrated a sensitivity of 63 % and a specificity of 69 %. Duration of T2DM (adjusted odds ratio (OR): 1.182; 95 % confidence interval (CI): 1.185-2.773) and FPG (OR: 0.987; 95 % CI: 0.976-0.9959) were significantly associated with high SS II after controlling for other risk factors. Duration of T2DM (Beta=0.439) contributed strongly to variance of SS II, whereas HbA1c (Beta=0.063) contributed weakly.Conclusion Duration of T2DM is a very important risk factor for severity of coronary artery disease.
Collapse
Affiliation(s)
- S Biswas
- Nilratan Sircar Medical College and Hospital
| | - A Mukherjee
- Nilratan Sircar Medical College and Hospital
| | | | | | - B Samanta
- Nilratan Sircar Medical College and Hospital
| | - D Khanra
- Heart and Lung Centre, Royal Wolverhampton NHS Trust
| | - S Ray
- Jagannath Gupta Institute of Medical Sciences and Hospitals
| | - R K Sharma
- Nilratan Sircar Medical College and Hospital
| |
Collapse
|
24
|
Dai L, Chakraborty S, Wu G, Ye J, Lau YH, Ramanarayan H, Wu DT. Molecular simulation of linear octacosane via a CG10 coarse grain scheme. Phys Chem Chem Phys 2022; 24:5351-5359. [PMID: 35169819 DOI: 10.1039/d1cp05143a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Following our previous work on the united-atom simulation on octacosane (C28H58) (Dai et al., Phys. Chem. Chem. Phys., 2021, 23, 21262-21271), we developed a coarse grain scheme (CG10), which is able to reproduce the pivotal phase characteristics of octacosane with highly improved computational efficiency. The CG10 octacosane chain was composed of 10 consecutive beads, maintaining the fundamental zigzag chain morphology. When the potential functions were set up and the coefficients were parameterized, our CG10 models yielded solid phase diagrams and transitions during an annealing process. We also detected the melting point by various means: direct observation, bond order, density tracking, and an enthalpy plot. Furthermore, our CG10 successfully reproduced the liquid density with only 2% underestimation, indicating its applicability across the solid and liquid phases. Therefore, with the ability to reproduce critical structure and property characteristics, our CG10 scheme provides an effective means of numerically modelling octacosane with highly improved computational efficiency.
Collapse
Affiliation(s)
- L Dai
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - S Chakraborty
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - G Wu
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - J Ye
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - Y H Lau
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - H Ramanarayan
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - D T Wu
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| |
Collapse
|
25
|
Maniyar RR, Chakraborty S, Jarboe T, Suriano R, Wallack M, Geliebter J, Tiwari RK. Interacting Genetic Lesions of Melanoma in the Tumor Microenvironment: Defining a Viable Therapy. Adv Exp Med Biol 2021; 1350:123-143. [PMID: 34888847 DOI: 10.1007/978-3-030-83282-7_6] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Melanoma is the most aggressive form of skin cancer with an estimated 106,110 newly diagnosed cases in the United States of America in 2021 leading to an approximated 7180 melanoma-induced deaths. Cancer typically arises from an accumulation of somatic mutations and can be associated with mutagenic or carcinogenic exposure. A key characteristic of melanoma is the extensive somatic mutation rate of 16.8 mutations/Mb, which is largely attributed to UV exposure. Bearing the highest mutational load, many of them occur in key driver pathways, most commonly the BRAFV600E in the mitogen-activated protein kinase (MAPK) pathway. This driver mutation is targeted clinically with FDA-approved therapies using small molecule inhibitors of oncogenic BRAFV600E and MEK, which has greatly expanded therapeutic intervention following a melanoma diagnosis. Up until 2011, therapeutic options for metastatic melanoma were limited, and treatment typically fell under the spectrum of surgery, radiotherapy, and chemotherapy.Attributed to the extensive mutation rate, as well as having the highest number of neoepitopes, melanoma is deemed to be extremely immunogenic. However, despite this highly immunogenic nature, melanoma is notorious for inducing an immunosuppressive microenvironment which can be relieved by checkpoint inhibitor therapy. The two molecules currently approved clinically are ipilimumab and nivolumab, which target the molecules CTLA-4 and PD-1, respectively.A plethora of immunomodulatory molecules exist, many with redundant functions. Additionally, these molecules are expressed not only by immune cells but also by tumor cells within the tumor microenvironment. Tumor profiling of these cell surface checkpoint molecules is necessary to optimize a clinical response. The presence of immunomodulatory molecules in melanoma, using data from The Cancer Genome Atlas and validation of expression in two model systems, human melanoma tissues and patient-derived melanoma cells, revealed that the expression levels of B and T lymphocyte attenuator (BTLA), TIM1, and CD226, concurrently with the BRAFV600E mutation status, significantly dictated overall survival in melanoma patients. These molecules, along with herpesvirus entry mediator (HVEM) and CD160, two molecules that are a part of the HVEM/BTLA/CD160 axis, had a higher expression in human melanoma tissues when compared to normal skin melanocytes and have unique roles to play in T cell activation. New links are being uncovered between the expression of immunomodulatory molecules and the BRAFV600E genetic lesion in melanoma. Small molecule inhibitors of the MAPK pathway regulate the surface expression of this multifaceted molecule, making BTLA a promising target for immuno-oncology to be targeted in combination with small molecule inhibitors, potentially alleviating T regulatory cell activation and improving patient prognosis.
Collapse
Affiliation(s)
- R R Maniyar
- Human Oncology and Pathogenesis Program, Ludwig Collaborative and Swim Across America Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - S Chakraborty
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - T Jarboe
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
| | - R Suriano
- Division of Natural Sciences, College of Mount Saint Vincent, Bronx, NY, USA
| | - M Wallack
- Department Surgery, Metropolitan Hospital, New York, NY, USA
| | - J Geliebter
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA
| | - R K Tiwari
- Departments of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA.
| |
Collapse
|
26
|
Patel N, Amgai B, Chakraborty S, Hajra A, Ashish K, Patel Z, Aryal B, Aronow W, Singh A. Effect of thrombocytopenia in patients with infective endocarditis: an insight from the National Inpatient Sample database. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Infective endocarditis (IE) is one of the feared diseases in septic patients, and incidences are rising due to the intravenous drug abuse epidemic. Sepsis causes an escalation of the platelet destructions leading to thrombocytopenia (1). Few independent hospital-based studies have proposed increase mortality with thrombocytopenia in patients with IE (2–5). We aim to evaluate the significance of thrombocytopenia in IE subjects from the national inpatient sample (NIS) database.
Method
We analyzed the NIS database from Jan-2016 to Dec-2018 using Stata 16.0. NIS is the largest publicly available all-payer inpatient care database in the United States, containing data on more than seven million hospital stays per year. We identified patients with IE with or without thrombocytopenia using ICD-10 codes. The primary outcome of interest was in-hospital mortality comparison. We adjusted potential confounders (age, sex, diabetes, hypertension, etc.) with multivariate logistic regression analysis. Further analysis was done after balancing the population co-morbidity using a Greedy propensity match for accuracy.
Results
A total of 174,495 subjects were included in this study with a diagnosis of IE. Among these individuals, 33,285 patients had a concurrent diagnosis of thrombocytopenia. The mean ages were 53±19.5 years for the thrombocytopenia group and 55±19.8 years for others. Females were equally represented in both cohorts. There were 4,945 (14.86%) vs 2,835 (2.01%) mortalities reported in with and without thrombocytopenia group respectively. After propensity matching, there was a pronounced increase in mortality [Odds ratio (OR): 1.93 (1.72 – 2.15), p-value: <0.001] in the group with thrombocytopenia comparing to others. Complications such as Major bleeding requiring blood transfusion [OR: 1.45 (1.35–1.57)], acute myocardial infarction [OR: 1.56 (1.35–1.70)], complete heart block [OR: 1.44 (1.16–1.53)], cardiac arrest [OR: 1.44 (1.25–1.72)], acute respiratory failure [OR: 1.51 (1.39–1.73)] and pressor support requirement [(OR: 1.73 (1.57–2.01)] were notably higher in the cohort of thrombocytopenia with statistically significant p-value (<0.001). The difference in length of stay between both cohorts after propensity match wasn't statistically significant.
Conclusion
In conclusion, IE patients with thrombocytopenia have higher incidences of in-patient mortality and poor outcomes than cohort without thrombocytopenia. Some of the adverse consequences could be temporally explained by complications related to underlying thrombocytopenia. Further investigations are needed to delineate the outcome in this group of subjects.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Patel
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - B Amgai
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| | - S Chakraborty
- Miami Valley Hospital, Ohio, United States of America
| | - A Hajra
- Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - K Ashish
- Crozer-Chester Medical Center, Internal Medicine, Upland, United States of America
| | - Z Patel
- AMC MET medical college, Ahmedabad, India
| | - B Aryal
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - W Aronow
- Westchester Medical Center, Director of Cardiology Research, Valhalla, United States of America
| | - A Singh
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| |
Collapse
|
27
|
Patel N, Amgai B, Chakraborty S, Hajra A, Binit A, Patel Z, Ashish K, Reddy M, Aronow W, Khalid M. Impact of atrial fibrillation in patients with colorectal cancer: a national inpatient sample database analysis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is the most common cardiac arrhythmia affecting approximately 1–2% overall population (1). Its causal relationship with colorectal cancer (CRC) is much for debate. According to one hypothesis, the presence of autoantibodies directed against ionic channels or acetylcholine receptors can predispose to the development of atrial fibrillation (2–3). Thus, AF may be regarded as an inflammatory complication in patients with colon cancer. Our study objective was to determine if AF impacts the outcome of patients with CRC.
Method
We analyzed the National Inpatient Sample (NIS) database from Oct-2015 to Dec 2018 using Stata 16.0. The NIS databases are released under the Healthcare Cost and Utilization Project, which includes inpatient admissions from the United States' participating hospitals. Total population with CRC were identified using their respective ICD-10 diagnostic codes then divided based on AF. To determine atrial fibrillation association with mortality and complications, we used multivariate logistic regression analysis using weights to generate nationally representative results. Later, a propensity-matched population analysis was done for the accuracy of the results.
Result
We found 245,305 patients admitted with CRC between Oct 2015 to Dec-2018 in the USA, out of which 28,170 (11.5%) were having AF. The mean age for the patients with AF was 77±10 compare to 65±14 years in those without AF. Patients with AF were associated with higher comorbidities and had a high population percentage with Carlson category three or above. There were 1,456 (5.2%) mortalities in the AF group compared to 5,689 (2.6%) in the other. The higher odds of mortality in patients with AF was present in multivariate logistic regression analysis in both non-propensity matched [1.71 (1.45–2.02), P-value: <0.000] and propensity-matched [1.44 (1.18–1.75), P-value: <0.001] cohorts. Patients with AF were hospitalized longer (9.20±7.8 vs. 6.85±7.0 days), leading to a high admission costs (US$ 25,875±22,875 vs. 20,087±19,314). Odds of complications such as need for blood transfusions [1.61 (1.05–1.29), P-value: 0.005], hemorrhage requiring blood transfusion [1.17 (1.05–1.29), P-value: 0.003], lower-GI bleed [1.31 (1.21–1.43), P-value: <0.001], sepsis [1.45 (1.30–1.62), P-value: <0.001], respiratory failure [1.39 (1.15–1.67), P-value: 0.001] etc. were also higher in group of patients with CRC and AF.
Conclusion
In our retrospective, propensity-matched national inpatient sample analyses of patients admitted with colorectal cancer, atrial fibrillation is associated with higher morbidity and mortality. AF was associated with a high burden of complications with prolonged hospital stay leading to increased health care expenditures.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Patel
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - B Amgai
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| | - S Chakraborty
- Miami Valley Hospital, Ohio, United States of America
| | - A Hajra
- Jacobi Medical Center, Albert Einstein College of Medicine, New York, United States of America
| | - A Binit
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - Z Patel
- AMC MET medical college, Ahmedabad, India
| | - K Ashish
- Crozer-Chester Medical Center, Internal Medicine, Upland, United States of America
| | - M Reddy
- University of Kansas Medical Center, Division Chief, Cardiac Electrophysiology, Kansas City, United States of America
| | - W Aronow
- Westchester Medical Center, Director of Cardiology Research, Valhalla, United States of America
| | - M Khalid
- Maimonides Medical Center, New York, United States of America
| |
Collapse
|
28
|
Patel N, Amgai B, Chakraborty S, Hajra A, Aryal B, Patel Z, Ashish K, Reddy M, Aronow W, Khalid M. Gender based outcome of IABP implantation in patients with acute coronary syndrome and cardiogenic shock: a national inpatient sample database analysis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Intra-Aortic Balloon counter-pulsation is frequently used as a circulatory support device in patients requiring hemodynamic support - in cardiogenic shock and in patients at risk of hemodynamic decompensation during a high-risk coronary intervention. Impact of IABP in this patient population has been variable. Certain studies have shown a beneficial effect of IABP on selected populations having acute coronary syndrome with cardiogenic shock (1–3). Our objective was to compare the outcomes based on gender in the ACS population with cardiogenic shock and IABP placement.
Methods
We analyzed the National Inpatient Sample database from Oct-2015 to Dec-2017 released under Healthcare Cost utilization Project in the USA using Stata 16.0. The population was identified using respective ICD-10 codes. We excluded the population with sudden cardiac arrest, pulmonary embolism, and patients with anatomical post-MI complications. Multivariate logistic regression analysis was done to determine the difference in outcomes based on gender using clinically relevant variables. Later, propensity-matched cohort analysis was performed based on the regression variables.
Results
Of 36, 990 patients who met our inclusion criteria 25,670 (69%) were male and 11,320 (31%) were female. The average age for male and female populations was 66±11 and 69±12 years. Femnales were more likely to have higher Charlson co-morbidity index three or above. We found higher mortality in the female population [3,146 (27.79%)] compared to male [5,884 (22.92%)] in univariate analyses. Propensity-matched multivariate regression analysis showed no difference [OR: 1.06 (0.91–1.22) with P-value: 0.482] in mortality after adjusting for clinically relevant variables. Subgroup analysis in STEMI and NSTEMI populations did not show a difference. The average hospital stay was similar in both cohorts, with the male having a higher cost per stay. We found no difference in most of the complications included in our study except for higher coronary artery dissection [OR: 2.98 (1.73–5.13), P-value: <0.001] and lower rates of AKI [OR: 0.72 (0.63–0.83), P-value: <0.001], AKI requiring hemodialysis [OR: 0.74 (0.56–0.97), P-value:0.031] and ventricular tachycardia [OR: 0.73 (0.64–0.84), P-value: <0.001] in the female population.
Conclusion
The inpatient population of ACS with Cardiogenic shock and IABP insertion showed no significant difference in mortality between males and females which was valid for subgroup analysis of NSTEMI and STEMI groups. Complications such as coronary artery dissection were higher, whereas AKI, AKI requiring hemodialysis, and ventricular tachycardias, were lower in females than males.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Patel
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - B Amgai
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| | - S Chakraborty
- Miami Valley Hospital, Ohio, United States of America
| | - A Hajra
- Jacobi Medical Center, Albert Einstein College of Medicine, New York, United States of America
| | - B Aryal
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - Z Patel
- AMC MET medical college, Ahmedabad, India
| | - K Ashish
- Crozer-Chester Medical Center, Internal Medicine, Upland, United States of America
| | - M Reddy
- University of Kansas Medical Center, Division Chief, Cardiac Electrophysiology, Kansas City, United States of America
| | - W Aronow
- Westchester Medical Center, Director of Cardiology Research, Valhalla, United States of America
| | - M Khalid
- Maimonides Medical Center, New York, United States of America
| |
Collapse
|
29
|
Kwek JW, Chakraborty S, Kuan KC, Yeo WC, Yin H, Liu CK, Guo L, Zidar J, Li C, Lim FCH. Interactions between poloxamer, PEOx-PPOy-PEOx, and non-ionic surfactant, sucrose monolaurate: A study on potential allergenic effect using model phospholipid membrane. Colloids Surf B Biointerfaces 2021; 209:112153. [PMID: 34673306 DOI: 10.1016/j.colsurfb.2021.112153] [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: 05/25/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 11/18/2022]
Abstract
Sugar-based surfactants are involved in skin related allergy cases in the past decade. Skin irritation starts with the interaction of the surfactant with the skin lipids leading to lipid emulsification and eventual barrier damage. Polymers or co-surfactants can be used to mitigate the allergenic effect but the mechanism of formulation mildness on skin remains unclear. We have used the quartz crystal microbalance (QCM) together with dissipative particle dynamics (DPD) simulation, small angle x-ray scattering (SAXS) as well as cell viability tests to decipher the interactions between poloxamers and sucrose monolaurate (SML), and how these interactions could prevent the disruption of a model supported phospholipid bilayer (SLB). Poloxamer addition to the SML solution can delay or totally prevent the disruption of the SLB depending on poloxamer type and concentration. Poloxamer P407 (Pluronic® F127) delays the onset of disruption while poloxamer P188 (Pluronic® F68) does not preserve the bilayer integrity even at high concentration of up to 15% w/w. Preservation of the SLB is likely due to the differences in the aggregates formation between SML-F127 and SML-F68 mixtures with corresponding retarded motion of SML micelles through the SML-F127 polymer matrix that improved cell viability.
Collapse
Affiliation(s)
- Jin W Kwek
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore.
| | - S Chakraborty
- Institute of High Performance Computing, A⁎STAR, 1 Fusionopolis Way, #16-16 Connexis, 138632, Singapore
| | - Kai C Kuan
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Wen C Yeo
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - H Yin
- Department for Technology, Innovation and Enterprise, Singapore Polytechnic, 500 Dover Road, 139651, Singapore
| | - Connie K Liu
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - L Guo
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - J Zidar
- Institute of High Performance Computing, A⁎STAR, 1 Fusionopolis Way, #16-16 Connexis, 138632, Singapore
| | - C Li
- Department for Technology, Innovation and Enterprise, Singapore Polytechnic, 500 Dover Road, 139651, Singapore
| | - Freda C H Lim
- Institute of Chemical and Engineering Sciences, A⁎STAR, 1 Pesek Road, Jurong Island, 627833, Singapore; Institute of High Performance Computing, A⁎STAR, 1 Fusionopolis Way, #16-16 Connexis, 138632, Singapore.
| |
Collapse
|
30
|
Dai L, Rutkevych PP, Chakraborty S, Wu G, Ye J, Lau YH, Ramanarayan H, Wu DT. Molecular dynamics simulation of octacosane for phase diagrams and properties via the united-atom scheme. Phys Chem Chem Phys 2021; 23:21262-21271. [PMID: 34543374 DOI: 10.1039/d1cp02720d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We used the united-atom scheme to build three types of crystalline structures for octacosane (C28H58) and carried out molecular dynamics simulations to investigate their phase properties. By gradually heating the three polymorphs, we managed to reproduce the sequence of experimentally reported crystalline phases and rotator phases. By studying the system density, molecule morphology, chain tilt angle and cell anisotropy, we hypothesized three mechanisms behind the observed system deformations and phase transformations during the annealing process. Furthermore, our model successfully predicted the melting temperature and heat of fusion. We also reproduced the characteristics of the rotator phases and the liquid phase, validating the transferability of the united-atom scheme among the different condensed phases of octacosane. Our methodology represents an effective and efficient means of numerical study for octacosane and may be used for other members of the n-alkane family.
Collapse
Affiliation(s)
- L Dai
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - P P Rutkevych
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), Singapore
| | - S Chakraborty
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - G Wu
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - J Ye
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - Y H Lau
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - H Ramanarayan
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| | - D T Wu
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore.
| |
Collapse
|
31
|
Menezes AFB, Mazucheli J, de Oliveira RP, Chakraborty S. Improved maximum likelihood estimation of the parameters of the Gamma-Uniform distribution with bias-corrections. COMMUN STAT-SIMUL C 2021. [DOI: 10.1080/03610918.2021.1951760] [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: 10/20/2022]
Affiliation(s)
- A. F. B. Menezes
- Department of Statistics, Universidade Estadual de Maringá, DEs, Maringá, Paraná, Brazil
| | - J. Mazucheli
- Department of Statistics, Universidade Estadual de Maringá, DEs, Maringá, Paraná, Brazil
| | - R. P. de Oliveira
- Medical School, Universidade de São Paulo, Ribeirão Preto, Sao Paulo, Brazil
| | - S. Chakraborty
- Department of Statistics, Dibrugarh University, Dibrugarh, Assam, India
| |
Collapse
|
32
|
Basu Achari R, Goyal L, Chakraborty S, Arunsingh M, Arun B, Das S, Bhattacharyya T, Mallick I, Chatterjee S, Chatterjee J, Dhara S, Ghosh N, Mukhopadhyay J. PO-1033 Molecular profile and early MRI changes after chemoradiation in high grade diffuse astrocytoma. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07484-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
33
|
Sasidharan R, Bhattacharyya T, H Lal V, Mallick I, ArunSingh M, Chakraborty S, Basu Achari R, Chatterjee S. PO-1233 Real world results of CTRT in Ca esophagus: Can SCOPE-1 results be replicated outside trial setting? Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07684-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
34
|
Chakraborty A, Chakraborty S, Sen S, Bhatacharya T, Khemka R. Modification of the sacral erector spinae plane block using an ultrasound-guided sacral foramen injection: dermatomal distribution and radiocontrast study. Anaesthesia 2021; 76:1538-1539. [PMID: 34309009 DOI: 10.1111/anae.15549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2021] [Indexed: 11/27/2022]
Affiliation(s)
| | | | - S Sen
- Tata Medical Center, Kolkata, India
| | | | - R Khemka
- Tata Medical Center, Kolkata, India
| |
Collapse
|
35
|
Jha G, Mukhopadhyay S, Ulery AL, Lombard K, Chakraborty S, Weindorf DC, VanLeeuwen D, Brungard C. Agricultural soils of the Animas River watershed after the Gold King Mine spill: An elemental spatiotemporal analysis via portable X-ray fluorescence spectroscopy. J Environ Qual 2021; 50:730-743. [PMID: 33638153 DOI: 10.1002/jeq2.20209] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
In August 2015, 11.3 million L of heavy metal-contaminated water spilled into the Animas River from the Gold King Mine (Colorado, USA). National attention focused on water quality and agricultural production in areas affected by the spill. In response to local concerns, surface soil elemental concentrations were analyzed in three New Mexico agricultural fields to determine potential threats to agronomic production. Irrigated fields in the Animas watershed were scanned using portable X-ray fluorescence (PXRF) spectrometry to monitor the spatiotemporal variability of Pb, As, Cu, and Cr. A total of 175 locations were scanned using PXRF before and after the growing season for 3 yr. The geostatistical model with the lowest RMSE was chosen as the optimal model. The lowest RMSE for the elements ranged from to 0.10 to 0.44 m for As, from 0.50 to 0.98 m for Cr, from 0.15 to 0.91 m for Cu, and from 0.14 to 0.44 m for Pb across the models selected. The spatial dependence between the measured values exhibited strong to moderate autocorrelation for all metals except for As, for which spatial dependence was strong to weak. Some areas in each field exceeded the New Mexico Environment Department soil screening limit of 7.07 mg As kg-1 . All sampling locations were below the screening limit at last sampling time in 2019. Mixed models used for temporal analysis showed a significant decrease only in As below the screening value at the end of the study. Results indicate that the agricultural soils were below the soil screening guideline values.
Collapse
Affiliation(s)
- Gaurav Jha
- Dep. of Plant and Environmental Sciences, New Mexico State Univ., Las Cruces, NM, 88003, USA
- Dep. of Land, Air and Water Resources, Univ. of California Davis, Davis, CA, 95616, USA
| | - Swagata Mukhopadhyay
- Agricultural and Food Engineering Dep., Indian Institute of Technology, Kharagpur, WB, 721302, India
| | - April L Ulery
- Dep. of Plant and Environmental Sciences, New Mexico State Univ., Las Cruces, NM, 88003, USA
| | - Kevin Lombard
- Dep. of Plant and Environmental Sciences, New Mexico State Univ., Las Cruces, NM, 88003, USA
| | - Somsubhra Chakraborty
- Agricultural and Food Engineering Dep., Indian Institute of Technology, Kharagpur, WB, 721302, India
| | - David C Weindorf
- Dep. of Earth and Atmospheric Sciences, Central Michigan Univ., Mount Pleasant, MI, 48859, USA
| | - Dawn VanLeeuwen
- Dep. of Economics, Applied Statistics & International Business Development, New Mexico State Univ., Las Cruces, NM, 88003, USA
| | - Colby Brungard
- Dep. of Plant and Environmental Sciences, New Mexico State Univ., Las Cruces, NM, 88003, USA
| |
Collapse
|
36
|
Ferreira GWD, Ribeiro BT, Weindorf DC, Teixeira BI, Chakraborty S, Li B, Guilherme LRG, Scolforo JRS. Assessment of iron-rich tailings via portable X-ray fluorescence spectrometry: the Mariana dam disaster, southeast Brazil. Environ Monit Assess 2021; 193:203. [PMID: 33751261 DOI: 10.1007/s10661-021-08982-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
On November 5, 2015, the Fundão dam collapsed and released > 60 million m3 of iron-rich mining sediments into the Doce river basin, covering >1000 ha of floodplain soils across ~80 km from the rupture. The characterization of alluvial mud covering and/or mixed with native soil is a priority for successful environmental rehabilitation. Portable X-ray fluorescence (pXRF) spectrometry was used to (1) assess the elemental composition of native soils and alluvial mud across impacted riparian areas; and 2) predict fertility properties of the mud and soils that are crucial for environmental rehabilitation and vegetation establishment (e.g., pH, available macro and micronutrients, cation exchange capacity, organic matter). Native soils and alluvial mud were sampled across impacted areas and analyzed via pXRF and conventional laboratory methods. Random forest (RF) regression was used to predict fertility properties using pXRF data for pooled soil and alluvial mud samples. Mud and native surrounding soils were clearly differentiated based on chemical properties determined via pXRF (mainly SiO2, Al2O3, Fe2O3, TiO2, and MnO). The pXRF data and RF models successfully predicted pH for pooled samples (R2 = 0.80). Moderate predictions were obtained for soil organic matter (R2 = 0.53) and cation exchange capacity (R2 = 0.54). Considering the extent of impacted area and efforts required for successful environmental rehabilitation, the pXRF spectrometer showed great potential for screening impacted areas. It can assess total elemental composition, differentiate alluvial mud from native soils, and reasonably predict related fertility properties in pooled heterogeneous substrates (native soil + mud + river sediments).
Collapse
Affiliation(s)
- Gabriel W D Ferreira
- Department of Forest Sciences, Federal University of Lavras, Minas Gerais State, Doutor Sylvio Menicucci Avenue, Lavras, 37200-900, Brazil.
- Savannah River Ecology, University of Georgia, P O Drawer E, SC, Aiken, 29802, USA.
| | - Bruno T Ribeiro
- Department of Soil Science, Federal University of Lavras, Minas Gerais State, Doutor Sylvio Menicucci Avenue, Lavras, 37200-900, Brazil
- Department of Plant and Soil Science, Texas Tech University, Bayer Plant Science Building, Room 211A, 2911 15th Street, Lubbock, TX, 79409, USA
| | - David C Weindorf
- Department of Plant and Soil Science, Texas Tech University, Bayer Plant Science Building, Room 211A, 2911 15th Street, Lubbock, TX, 79409, USA
- Department of Earth and Atmospheric Sciences, Central Michigan University, Mount Pleasant, MI, 48859, USA
| | - Barbara I Teixeira
- Department of Forest Sciences, Federal University of Lavras, Minas Gerais State, Doutor Sylvio Menicucci Avenue, Lavras, 37200-900, Brazil
| | - Somsubhra Chakraborty
- Agricultural and Food Engineering Department, Indian Institute of Technology , Kharagpur, West Bengal, 721302, India
| | - Bin Li
- Department of Experimental Statistics, Louisiana State University, Baton Rouge, LA, 70802, USA
| | - Luiz Roberto G Guilherme
- Department of Soil Science, Federal University of Lavras, Minas Gerais State, Doutor Sylvio Menicucci Avenue, Lavras, 37200-900, Brazil
| | - José Roberto S Scolforo
- Department of Forest Sciences, Federal University of Lavras, Minas Gerais State, Doutor Sylvio Menicucci Avenue, Lavras, 37200-900, Brazil
| |
Collapse
|
37
|
Kalai S, Roychoudhury P, Dutta TK, Subudhi PK, Chakraborty S, Barman NN, Sen A. Multidrug resistant staphylococci isolated from pigs with exudative epidermitis in North eastern Region of India. Lett Appl Microbiol 2021; 72:535-541. [PMID: 33421175 DOI: 10.1111/lam.13448] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 12/31/2020] [Accepted: 01/04/2021] [Indexed: 11/30/2022]
Abstract
Exudative epidermatitis or greasy pig disease (GPD) is a contagious disease of pig and endemic worldwide caused by toxigenic strains under genus Staphylococcus. The present study reported an outbreak of GPD in Champhai district of Mizoram adjoining to the southern border of Myanmar. A total of 60 samples were collected from 22 clinically affected animals and processed for isolation and identification of Staphylococcus spp. All the isolates were subjected to antimicrobial sensitivity assay, biofilm production assay and detection of virulence genes, biofilm genes and mec genes followed by cloning and sequencing for phylogenetic analysis. A total of 44 staphylococci belonged to four species (S. sciuri, S. aureus,S. lentus, and S. hyicus) were isolated. Majority of the isolates were multidrug resistant with maximum resistance against ampicillin, penicillin including vancomycin. None of the S. hyicus isolates was methicillin resistant (MRSH) but 66·67% isolates were MRSA. By PCR, mecA gene was detected in S. aureus (n = 2), S. sciuri (n = 4) and S. lentus (n = 3). Biofilm associated gene icaD was detected in S. aureus (n = 3), S. sciuri (n = 5), S. hyicus (n = 4) and S. lentus (n = 6). The exfoliative toxin genes (ehxB, shetA and tsst1) were detected in S. hyicus (n = 3) and S. aureus (n = 1) isolates. All the isolates were closely related with the isolates from pigs of China, Germany, Japan and USA. The pathogens might be transmitted through illegal migration of pigs from Myanmar to India.
Collapse
Affiliation(s)
- S Kalai
- Department of Veterinary Microbiology, CVSc&AH, Central Agricultural University, Aizawl, Mizoram, India
| | - P Roychoudhury
- Department of Veterinary Microbiology, CVSc&AH, Central Agricultural University, Aizawl, Mizoram, India
| | - T K Dutta
- Department of Veterinary Microbiology, CVSc&AH, Central Agricultural University, Aizawl, Mizoram, India
| | - P K Subudhi
- Department of Veterinary Microbiology, CVSc&AH, Central Agricultural University, Aizawl, Mizoram, India
| | - S Chakraborty
- Department of Veterinary Microbiology, CVSc&AH, Central Agricultural University, Aizawl, Mizoram, India
| | - N N Barman
- Department of Veterinary Microbiology, Assam Agricultural University, Guwahati, Assam, India
| | - A Sen
- Division of Animal Health, ICAR-RCNEH, Shillong, Meghalaya, India
| |
Collapse
|
38
|
Bueno-Zabala KA, Lopresto CG, Calabro V, Curcio S, Ruiz-Colorado AA, Chakraborty S. Optimized Production of Glucose Syrup and Enzyme Membrane Reactor Using In Situ Product Recovery. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- K. A. Bueno-Zabala
- Facultad de Minas, Universidad Nacional de Colombia, Medellín 050041, Colombia
| | - C. G. Lopresto
- Laboratory of Transport Phenomena & Biotechnology, Department of Informatics, Modelling Electronics & Systems Engineering, Cubo-42A, Università Della Calabria, 87036 Rende, CS, Italy
| | - V. Calabro
- Laboratory of Transport Phenomena & Biotechnology, Department of Informatics, Modelling Electronics & Systems Engineering, Cubo-42A, Università Della Calabria, 87036 Rende, CS, Italy
| | - S. Curcio
- Laboratory of Transport Phenomena & Biotechnology, Department of Informatics, Modelling Electronics & Systems Engineering, Cubo-42A, Università Della Calabria, 87036 Rende, CS, Italy
| | - A. A. Ruiz-Colorado
- Facultad de Minas, Universidad Nacional de Colombia, Medellín 050041, Colombia
| | - S. Chakraborty
- Laboratory of Transport Phenomena & Biotechnology, Department of Informatics, Modelling Electronics & Systems Engineering, Cubo-42A, Università Della Calabria, 87036 Rende, CS, Italy
| |
Collapse
|
39
|
Hunter E, Stander M, Kossmann J, Chakraborty S, Prince S, Peters S, Loedolff B. Toward the identification of a phytocannabinoid-like compound in the flowers of a South African medicinal plant (Leonotis leonurus). BMC Res Notes 2020; 13:522. [PMID: 33172494 PMCID: PMC7653773 DOI: 10.1186/s13104-020-05372-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 10/31/2020] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Current global trends on natural therapeutics suggest an increasing market interest toward the use and discovery of new plant-derived therapeutic compounds, often referred to as traditional medicine (TM). The Cannabis industry is currently one such focal area receiving attention, owing to the occurrence of phytocannabinoids (pCBs) which have shown promise in health-promotion and disease prevention. However, the occurrence of pCBs in other plant species are often overlooked and rarely studied. Leonotis leonurus (L.) R. Br. is endemic to South Africa with a rich history of use in TM practices amongst indigenous people and, has been recorded to induce mild psychoactive effects akin to Cannabis. While the leaves have been well-reported to contain therapeutic phytochemicals, little information exists on the flowers. Consequently, as part of a larger research venture, we targeted the flowers of L. leonurus for the identification of potential pCB or pCB-like compounds. RESULTS Flower extracts were separated and analyzed using high performance thin layer chromatography (HPTLC). A single pCB candidate was isolated from HPTLC plates and, using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), we could successfully group this compound as a fatty amide and tentatively identified as 7,10,13,16-Docosatetraenoylethanolamine (adrenoyl-EA), a known bioactive compound.
Collapse
Affiliation(s)
- E. Hunter
- Department of Genetics, Institute of Plant Biotechnology, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa
| | - M. Stander
- Central Analytical Facilities, Stellenbosch University, Stellenbosch, South Africa
| | - J. Kossmann
- Department of Genetics, Institute of Plant Biotechnology, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa
| | - S. Chakraborty
- Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - S. Prince
- Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - S. Peters
- Department of Genetics, Institute of Plant Biotechnology, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa
| | - Bianke Loedolff
- Department of Genetics, Institute of Plant Biotechnology, Faculty of AgriSciences, Stellenbosch University, Stellenbosch, South Africa
| |
Collapse
|
40
|
Talaat KR, Porter CK, Bourgeois AL, Lee TK, Duplessis CA, Maciel M, Gutierrez RL, DeNearing B, Adjoodani B, Adkinson R, Testa KJ, Feijoo B, Alcala AN, Brubaker J, Beselman A, Chakraborty S, Sack D, Halpern J, Trop S, Wu H, Jiao J, Sullivan E, Riddle MS, Joseph SS, Poole ST, Prouty MG. Oral delivery of Hyperimmune bovine serum antibodies against CS6-expressing enterotoxigenic Escherichia coli as a prophylactic against diarrhea. Gut Microbes 2020; 12:1732852. [PMID: 32167011 PMCID: PMC7524165 DOI: 10.1080/19490976.2020.1732852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND . Oral administration of bovine antibodies active against enterotoxigenic Escherichia coli (ETEC) have demonstrated safety and efficacy against diarrhea in human challenge trials. The efficacy of bovine serum immunoglobulins (BSIgG) against recombinant colonization factor CS6 or whole cell ETEC strain B7A was assessed against challenge with the CS6-expressing B7A. METHODS . This was a randomized, double-blind, placebo-controlled trial in which healthy adults received oral hyperimmune BSIgG anti-CS6, anti-B7A whole cell killed or non-hyperimmune BSIgG (placebo) in a 1:1:1 ratio then challenged with ETEC B7A. Two days pre-challenge, volunteers began a thrice daily, seven day course of immunoprophylaxis. On day 3, subjects received 1 × 1010 CFUs of B7A. Subjects were observed for safety and the primary endpoint of moderate-severe diarrhea (MSD). RESULTS . A total of 59 volunteers received product and underwent ETEC challenge. The BSIgG products were well-tolerated across all subjects. Upon challenge, 14/20 (70%) placebo recipients developed MSD, compared to 12/19 (63%; p = .74) receiving anti-CS6 BSIgG and 7/20 (35%; p = .06) receiving anti-B7A BSIgG. Immune responses to the ETEC infection were modest across all groups. CONCLUSIONS . Bovine-derived serum antibodies appear safe and well tolerated. Antibodies derived from cattle immunized with whole cell B7A provided 50% protection against MSD following B7A challenge; however, no protection was observed in subjects receiving serum antibodies targeting CS6. The lack of observed efficacy in this group may be due to low CS6 surface expression on B7A, the high dose challenge inoculum and/or the use of serum derived antibodies versus colostrum-derived antibodies.
Collapse
Affiliation(s)
- KR Talaat
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - CK Porter
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA,CONTACT CK Porter Naval Medical Research Center, Silver Spring, MD, USA
| | - AL Bourgeois
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - TK Lee
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| | - CA Duplessis
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| | - M Maciel
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - RL Gutierrez
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| | - B DeNearing
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - B Adjoodani
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - R Adkinson
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - KJ Testa
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - B Feijoo
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - AN Alcala
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - J Brubaker
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - A Beselman
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - S Chakraborty
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - D Sack
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - J Halpern
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - S Trop
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - H Wu
- SAB Biotherapeutics Inc, Sioux Falls, SD, USA
| | - J Jiao
- SAB Biotherapeutics Inc, Sioux Falls, SD, USA
| | - E Sullivan
- SAB Biotherapeutics Inc, Sioux Falls, SD, USA
| | - MS Riddle
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| | - SS Joseph
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - ST Poole
- The Henry M. Jackson Foundation, Bethesda, MD, USA
| | - MG Prouty
- Enteric Diseases Department, Naval Medical Research Center, Silver Spring, MD, USA
| |
Collapse
|
41
|
Guarnizo A, Chung HS, Chakraborty S. Subcallosal haemorrhage as a sign of diffuse axonal injury in patients with traumatic brain injury. Clin Radiol 2020; 76:237.e15-237.e21. [PMID: 33160606 DOI: 10.1016/j.crad.2020.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 10/02/2020] [Indexed: 11/17/2022]
Abstract
AIM To identify the relationship between subcallosal haemorrhage and diffuse axonal injury (DAI) grading. MATERIALS AND METHODS Computed tomography (CT) and magnetic resonance imaging (MRI) images of all patients with traumatic brain injury over the past 5 years were reviewed. Subcallosal haemorrhage was defined as the presence of haemorrhage on admission CT underneath the corpus callosum. Grading of DAI was performed using MRI or CT exclusive of subcallosal haemorrhage status. The association of demographic factors, mechanism of injury, Glasgow Coma Scale (GCS) on admission, and positive subcallosal haemorrhage status with the presence of moderate-severe DAI was assessed. Receiver operating characteristic (ROC) curve analysis was used to evaluate the performance of subcallosal haemorrhage status in predicting DAI severity. Median modified Rankin Scale (mRS) scores were compared between subcallosal haemorrhage positive and negative cases. RESULTS The images of 1,150 patients were reviewed with 301 patients showing DAI. Of those, 64 patients (21.2%) and 237 patients (78.7%) were positive and negative for subcallosal haemorrhage, respectively. Isolated subcallosal haemorrhage was noted in 15 patients (23.4%). A subcallosal haemorrhage positive status (OR=5.16, p < 0.001) was statistically significantly associated with moderate-severe DAI. The ROC curve for predicting moderate-severe DAI with subcallosal haemorrhage status showed an area under the curve of 0.625 (95% confidence interval [CI]: 0.561-0.688, p < 0.001). The median mRS score was significantly higher (p < 0.001) in the subcallosal haemorrhage positive group (median 4.5, interquartile range [IQR] 2-6) versus the negative group (median 2, IQR 2-3). Isolated subcallosal haemorrhage group showed moderate-severe DAI in 80% (12/15) of cases. CONCLUSION Subcallosal haemorrhage is a highly specific radiographic predictor of moderate-severe DAI (grade 2-3).
Collapse
Affiliation(s)
- A Guarnizo
- Department of Radiology, Division of Neuroradiology, University of Ottawa, The Ottawa Hospital Civic and General Campus, 1053 Carling Avenue, Ottawa, Ontario, K1Y 4E9, Canada
| | - H S Chung
- Faculty of Medicine, University of Ottawa, The Ottawa Hospital Civic and General Campus, 1053 Carling Avenue, Ottawa, Ontario, K1Y 4E9, Canada
| | - S Chakraborty
- Department of Radiology, Division of Neuroradiology, University of Ottawa, The Ottawa Hospital Civic and General Campus, 1053 Carling Avenue, Ottawa, Ontario, K1Y 4E9, Canada.
| |
Collapse
|
42
|
Bhusal S, Chatterjee S, Chakraborty S, Kumari A, Bachianathan S, Mahato A, Lal P, Gupta S, Solomon P, Das K, Mandal S. PO-1797: Dosimetric analysis of simultaneous integrated boost in the HYPORT Adjuvant Trial (NCT03788213). Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01815-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
43
|
Mallick I, Paul S, Chakraborty S. Stress and Burnout among Radiation Oncologists in India. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2472] [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]
|
44
|
Santosham R, Chatterjee S, Chakraborty S, Mahata A, Mandal S, Das A, Kumari A, Ray S, Ahmed R. PO-0985: Hypofractionated radiotherapy with SIB in advanced incurable breast cancer-HYPORT B study. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01003-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
45
|
Mallick I, Lal V, Arunsingh M, Bhattacharyya T, Chatterjee S, Chakraborty S, Achari R. PO-1528: Predicting response to neoadjuvant chemoradiation in esophageal cancer using CT radiomic features. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01546-2] [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: 10/22/2022]
|
46
|
Maulik S, Mallick I, Arunsingh M, Chatterjee S, Achari R, Chakraborty S, Arun B, Prasath S. PO-1196: long term results with moderately hypofractionated RT in high-risk localized prostate cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01214-7] [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: 10/22/2022]
|
47
|
Zakhari N, Nguyen T, Omaiche S, Chakraborty S. Posterior spinal cord indentation: imaging findings and clinical outcome. Clin Radiol 2020; 75:615-621. [DOI: 10.1016/j.crad.2020.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 03/11/2020] [Indexed: 10/24/2022]
|
48
|
Chakraborty S, Gowrishankar J, Joshi A, Kannan P, Kohli RK, Lakhotia SC, Misra G, Nautiyal CM, Ramasubramanian K, Sathyamurthy N, Singhvi AK. Suggestions for a National Framework for Publication of and Access to Literature in Science and Technology in India. CURR SCI INDIA 2020. [DOI: 10.18520/cs/v118/i7/1026-1034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
49
|
Lakhoo K, Davies J, Chakraborty S, Berg S, Tennyson R, Fowler D, Manek S, Verrill C, Lane S. Correction to: Development of a new reproductive tissue cryopreservation clinical service for children: the Oxford programme. Pediatr Surg Int 2020; 36:537. [PMID: 32030460 PMCID: PMC7645559 DOI: 10.1007/s00383-020-04624-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the published version, the Acknowledgements section was missing a funding note of co-author Dr C Verrill. The corrected version should read as follows.
Collapse
Affiliation(s)
- K. Lakhoo
- Department of Paediatric Surgery, University of Oxford and Oxford University Hospitals, Oxford, UK ,Nuffield Department of Surgery, Oxford University and Oxford University Hospitals, Headley Way, Oxford, OX39DA UK
| | - J. Davies
- Oxford Tissue Bank, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - S. Chakraborty
- Department of Paediatric Radiology, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - S. Berg
- Department of Paediatric Anaesthesia, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - R. Tennyson
- Department of Psychology, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - D. Fowler
- Department of Cellular Pathology, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - S. Manek
- Department of Cellular Pathology, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - C. Verrill
- Department of Cellular Pathology, University of Oxford and Oxford University Hospitals, Oxford, UK
| | - S. Lane
- Department of Paediatrics and Child Health, University of Oxford and Oxford University Hospitals, Oxford, UK
| |
Collapse
|
50
|
Liu K, Sun H, Zhang L, Li B, Chakraborty S, Wang X. Do patient-specific cutting guides and plates improve the accuracy of maxillary repositioning in hemifacial microsomia? Br J Oral Maxillofac Surg 2020; 58:590-596. [PMID: 32156446 DOI: 10.1016/j.bjoms.2020.02.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 07/01/2019] [Accepted: 02/25/2020] [Indexed: 11/25/2022]
Abstract
The aim of this retrospective study was to use computer-aided design and manufacturing (CAD/CAM) patient-specific plates and cutting guides for the waferless positioning and fixation of the maxilla after bimaxillary osteotomies in cases of hemifacial microsomia with condylar dysplasia or absence of the temporomandibular joint (TMJ), and to compare the results with the CAD/CAM fabricated surgical wafer by 3-dimensional analysis. Eighteen patients were selected from the hospital database, preoperative surgical planning and simulation were done on 3-dimensional computed tomographic models for all patients, and they were divided into Group I - in which CAD/CAM patient-specific cutting guides and plates were used; and Group II - in which CAD/CAM fabricated surgical wafers were used. Finally, the outcome was evaluated by comparing planned with postoperative outcomes. The largest discrepancies of the Le Fort I segment were 0.50 (0.18) mm in the anteroposterior direction and 0.82 (0.60)° in the yaw orientation with Group I. The largest discrepancies of the Le Fort I segment were 1.32 (1.40) mm in superioinferior direction and 8.48 (7.73)° in the yaw orientation with Group II. The CAD/CAM patient-specific cutting guides and plates proved to be reliable and have great value in improving the accuracy in repositioning the Le Fort I segment and in the efficacy of orthognathic treatment of hemifacial microsomia with condylar dysplasia or no TMJ. The CAD/CAM patient-specific cutting guides and plates are therefore a useful alternative to the wafer technique.
Collapse
Affiliation(s)
- K Liu
- Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology,National Clinical Research Center for Oral Diseases, Shanghai, China
| | - H Sun
- Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology,National Clinical Research Center for Oral Diseases, Shanghai, China
| | - L Zhang
- Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology,National Clinical Research Center for Oral Diseases, Shanghai, China
| | - B Li
- Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology,National Clinical Research Center for Oral Diseases, Shanghai, China
| | | | - X Wang
- Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology,National Clinical Research Center for Oral Diseases, Shanghai, China.
| |
Collapse
|