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Pasqualetti G, Bettermann O, Darkwah Oppong N, Ibarra-García-Padilla E, Dasgupta S, Scalettar RT, Hazzard KRA, Bloch I, Fölling S. Equation of State and Thermometry of the 2D SU(N) Fermi-Hubbard Model. Phys Rev Lett 2024; 132:083401. [PMID: 38457712 DOI: 10.1103/physrevlett.132.083401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 01/09/2024] [Indexed: 03/10/2024]
Abstract
We characterize the equation of state (EoS) of the SU(N>2) Fermi-Hubbard Model (FHM) in a two-dimensional single-layer square optical lattice. We probe the density and the site occupation probabilities as functions of interaction strength and temperature for N=3, 4, and 6. Our measurements are used as a benchmark for state-of-the-art numerical methods including determinantal quantum Monte Carlo and numerical linked cluster expansion. By probing the density fluctuations, we compare temperatures determined in a model-independent way by fitting measurements to numerically calculated EoS results, making this a particularly interesting new step in the exploration and characterization of the SU(N) FHM.
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Affiliation(s)
- G Pasqualetti
- Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - O Bettermann
- Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - N Darkwah Oppong
- Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - E Ibarra-García-Padilla
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005-1892, USA
- Rice Center for Quantum Materials, Rice University, Houston, Texas 77005-1892, USA
- Department of Physics, University of California, Davis, California 95616, USA
- Department of Physics and Astronomy, San José State University, San José, California 95192, USA
| | - S Dasgupta
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005-1892, USA
- Rice Center for Quantum Materials, Rice University, Houston, Texas 77005-1892, USA
| | - R T Scalettar
- Department of Physics, University of California, Davis, California 95616, USA
| | - K R A Hazzard
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005-1892, USA
- Rice Center for Quantum Materials, Rice University, Houston, Texas 77005-1892, USA
- Department of Physics, University of California, Davis, California 95616, USA
| | - I Bloch
- Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
| | - S Fölling
- Ludwig-Maximilians-Universität, Schellingstraße 4, 80799 München, Germany
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany
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Gupta A, Shareef M, Twisha M, Bhattacharjee S, Mukherjee G, Nayak SS, Basu S, Dasgupta S, Datta J, Bhattacharyya S, Mukherjee A. True coincidence summing correction for a BEGe detector in close geometry measurements. Appl Radiat Isot 2023; 200:110966. [PMID: 37566947 DOI: 10.1016/j.apradiso.2023.110966] [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: 04/12/2023] [Revised: 07/06/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023]
Abstract
The true coincidence summing correction factor for a Broad Energy Germanium detector has been calculated at far and close geometry set-up using radioactive γ-ray sources. The correction factors were calculated using both experimental and analytical methods. Geant4 simulation was done to calculate the full-energy peak and total efficiencies of the detector. Standard, as well as fabricated mono-energetic γ-ray sources, were used for the γ-ray efficiency measurements. The simulated efficiencies of mono-energetic γ-ray sources were matched to the experimental γ-ray efficiencies by optimizing the detector parameters. The same parameters were used to obtain the full-energy peak and total efficiencies for γ-rays of current interest. Analytical and experimental correction factors were found to agree well with each other. The coincidence summing effect is found to be significant for source-to-detector distances less than 5 cm.
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Affiliation(s)
- Ashish Gupta
- Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700064, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - M Shareef
- Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - Munmun Twisha
- Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700064, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Saikat Bhattacharjee
- Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700064, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Gopal Mukherjee
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - Satya Samiran Nayak
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - Sansaptak Basu
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - S Dasgupta
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - J Datta
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - S Bhattacharyya
- Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata, 700064, India
| | - A Mukherjee
- Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700064, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
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Dantis K, Ramchandani R, Sahu SA, Singh VY, Dasgupta S. Primary Cutaneous Adenoid Cystic Carcinoma Of The Chest Wall With Axillary Lymph Node Metastases And Its Management: A Case Report. Port J Card Thorac Vasc Surg 2023; 30:51-54. [PMID: 37418769 DOI: 10.48729/pjctvs.293] [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] [Received: 08/15/2022] [Accepted: 03/31/2023] [Indexed: 07/09/2023]
Abstract
Primary cutaneous adenoid cystic carcinoma (PCACC) is a rare form of adenoid cystic carcinoma (ACC) arising commonly from the salivary gland. Less often they originate outside the head and neck region, with the scalp being the commonest cutaneous site in 40% of the cases. The presentation on the chest wall is rare, with no reports to date on axillary lymph node metastases. Here we report a case of a 65-year-old female with previously operated PCACC of the chest wall at a different center, showing uptake on positron emission tomography imaging at the site of surgical scar that w as inconclusive on needle biopsy metastasized to the axillary lymph node confirmed by needle biopsy managed with wide local excision, axillary lymph node dissection, and chest wall reconstruction with keystone island flap. The postoperative outcome was uneventful with no recurrence or axillary complications at one year's follow-up. She was advised to receive adjuvant radiotherapy; however, she refused. To conclude, though PCACC is rare, they can have an aggressive presentation, and a multidisciplinary approach is necessary for a better outcome.
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Affiliation(s)
- Klein Dantis
- Assistant Professor, Department of Cardiothoracic Surgery, All India Institute of Medical Sciences, Raipur, India
| | - Radhakrishna Ramchandani
- Associate Professor, Department of General Surgery, All India Institute of Medical Sciences, Raipur, India
| | - Shamendra Anand Sahu
- Assistant Professor, Department of Burnsand Plastic Surgery, All India Institute of Medical Sciences, Raipur, India
| | - Vandita Yogendra Singh
- Associate Professor, Department of Pathology, All India Institute of Medical Sciences, Raipur, India
| | - Subhajit Dasgupta
- Junior resident, Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, India
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Mishra A, Ravina M, Kote R, Kumar A, Kashyap Y, Dasgupta S, Reddy M. Role of Textural Analysis of Pretreatment 18F Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Response Prediction in Esophageal Carcinoma Patients. Indian J Nucl Med 2023; 38:255-263. [PMID: 38046976 PMCID: PMC10693362 DOI: 10.4103/ijnm.ijnm_1_23] [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: 01/03/2023] [Accepted: 03/30/2023] [Indexed: 12/05/2023] Open
Abstract
Introduction Positron emission tomography/computed tomography (PET/CT) is routinely used for staging, response assessment, and surveillance in esophageal carcinoma patients. The aim of this study was to investigate whether textural features of pretreatment 18F-fluorodeoxyglucose (18F-FDG) PET/CT images can contribute to prognosis prediction in carcinoma oesophagus patients. Materials and Methods This is a retrospective study of 30 diagnosed carcinoma esophagus patients. These patients underwent pretreatment 18F-FDG PET/CT for staging. The images were processed in a commercially available textural analysis software. Region of interest was drawn over primary tumor with a 40% threshold and was processed further to derive 92 textural and radiomic parameters. These parameters were then compared between progression group and nonprogression group. The original dataset was subject separately to receiver operating curve analysis. Receiver operating characteristic (ROC) curves were used to identify the cutoff values for textural features with a P < 0.05 for statistical significance. Feature selection was done with principal component analysis. The selected features of each evaluator were subject to 4 machine-learning algorithms. The highest area under the curve (AUC) values was selected for 10 features. Results A retrospective study of 30 primary carcinoma esophagus patients was done. Patients were followed up after chemo-radiotherapy and they underwent follow-up PET/CT. On the basis of their response, patients were divided into progression group and nonprogression group. Among them, 15 patients showed disease progression and 15 patients were in the nonprogression group. Ten textural analysis parameters turned out to be significant in the prediction of disease progression. Cutoff values were calculated for these parameters according to the ROC curves, GLZLM_long zone emphasis (Gray Level Zone Length Matrix)_long zone emphasis (44.9), GLZLM_low gray level zone emphasis (0.006), GLZLM_short zone low gray level emphasis (0.0032), GLZLM_long zone low gray level emphasis (0.185), GLRLM_long run emphasis (Gray Level Run Length Matrix) (1.31), GLRLM_low gray level run emphasis (0.0058), GLRLM_short run low gray level emphasis (0.005496), GLRLM_long run low gray level emphasis (0.00727), NGLDM_Busyness (Neighborhood Gray Level Difference Matrix) (0.75), and gray level co-occurrence matrix_homogeneity (0.37). Feature selection by principal components analysis and feature classification by the K-nearest neighbor machine-learning model using independent training and test samples yielded the overall highest AUC. Conclusions Textural analysis parameters could provide prognostic information in carcinoma esophagus patients. Larger multicenter studies are needed for better clinical prognostication of these parameters.
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Affiliation(s)
- Ajit Mishra
- Department of Surgical Gastroenterology, DKS Multispeciality Hospital, Raipur, India
| | - Mudalsha Ravina
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, India
| | - Rutuja Kote
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, India
| | - Amit Kumar
- Department of Medical Oncology, All India Institute of Medical Sciences, Raipur, India
| | - Yashwant Kashyap
- Department of Medical Oncology, All India Institute of Medical Sciences, Raipur, India
| | - Subhajit Dasgupta
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, India
| | - Moulish Reddy
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, India
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Mishra A, Ravina M, Kote R, Kumar A, Kashyap Y, Dasgupta S, Reddy M. Role of textural analysis parameters derived from FDG PET/CT in differentiating hepatocellular carcinoma and hepatic metastases. Nucl Med Commun 2023; 44:381-389. [PMID: 36826419 DOI: 10.1097/mnm.0000000000001676] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
INTRODUCTION Texture and radiomic analysis characterize the tumor's phenotype and evaluate its microenvironment in quantitative terms. The aim of this study was to investigate the role of textural features of 18F-FDG PET/computed tomography (CT) images in differentiating hepatocellular carcinoma (HCC) and hepatic metastasis in patients with suspected liver tumors. METHODS This is a retrospective, single-center study of 30 patients who underwent FDG PET/CT for the characterization of liver lesions or for staging a suspected liver tumor. The histological diagnosis of either primary or metastatic tumor was obtained from CT-guided biopsy, ultrasound-guided biopsy, or surgical removal of a liver lesion. The PET/CT images were then processed in commercially available textural analysis software. Region of interest was drawn over the primary tumor with a 40% threshold and was processed further to derive 42 textural and radiomic parameters. These parameters were then compared between HCC group and hepatic metastases group. Receiver-operating characteristic (ROC) curves were used to identify cutoff values for textural features with a P value <0.05 for statistical significance. RESULTS A retrospective study of 30 patients with suspected liver tumors was done. After undergoing PET/CT, the histological diagnosis of these lesions was confirmed. Among these 30 patients, 15 patients had HCC, and 15 patients had hepatic metastases from various primary sites. Seven textural analysis parameters were significant in differentiating HCC from liver metastasis. Cutoff values were calculated for these parameters according to the ROC curves, standardized uptake value (SUV) Skewness (0.705), SUV Kurtosis (3.65), SUV Excess Kurtosis (0.653), gray-level zone length matrix_long zone emphasis (349.2), gray-level zone length matrix_long zone low gray-level emphasis (1.6), gray-level run length matrix_long run emphasis (1.38) and gray-level co-occurrence matrix_Homogeneity (0.406). CONCLUSION Textural analysis parameters could successfully differentiate HCC and hepatic metastasis non-invasively. Larger multi-center studies are needed for better clinical prognostication of these parameters.
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Affiliation(s)
- Ajit Mishra
- Department of Surgical Gastroenterology, DKS Multispeciality Hospital
| | - Mudalsha Ravina
- Department of Nuclear Medicine, AIl India Institute of Medical Sciences
| | - Rutuja Kote
- Department of Nuclear Medicine, AIl India Institute of Medical Sciences
| | - Amit Kumar
- Department of Medical Oncology, AIl India Institute of Medical Sciences, Raipur, Chattisgarh, India
| | - Yashwant Kashyap
- Department of Medical Oncology, AIl India Institute of Medical Sciences, Raipur, Chattisgarh, India
| | - Subhajit Dasgupta
- Department of Nuclear Medicine, AIl India Institute of Medical Sciences
| | - Moulish Reddy
- Department of Nuclear Medicine, AIl India Institute of Medical Sciences
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Krishna S, Ravina M, Kashyap Y, Dasgupta S, Kote R. 18F-Labeled Fluoro-2-Deoxyglucose Positron Emission Tomography and Computed Tomography Findings in a Case of Atypical Presentation of Adult Cutaneous T-cell Lymphoma. Indian J Nucl Med 2023; 38:167-169. [PMID: 37456180 PMCID: PMC10348491 DOI: 10.4103/ijnm.ijnm_128_22] [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: 07/26/2022] [Revised: 09/17/2022] [Accepted: 09/22/2022] [Indexed: 07/18/2023] Open
Abstract
Adult cutaneous T-cell lymphoma is an uncommon malignancy with poor prognosis and is usually seen in association with human T-cell lymphotropic virus type 1. We present the case of a 25-year-old female who gave a history of extensive whole-body polypoidal cutaneous and bilateral orbital and breast swellings. Biopsy was suggestive of cutaneous T-cell lymphoma and the patient was evaluated with 18F-labeled fluoro-2-deoxyglucose positron emission tomography and computed tomography for initial staging of the disease.
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Affiliation(s)
- Sarin Krishna
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Mudalsha Ravina
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Yashwant Kashyap
- Department of Medical Oncology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Subhajit Dasgupta
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Rutuja Kote
- Department of Nuclear Medicine, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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Dasgupta S, Samad A, Howlader SS, Choudhury DI, Hossain A, Khan MS, Hasan MR, Talukder QI, Rahman MK. Complete Heparin Reversal by Protamine during Off-Pump Coronary Artery Bypass Surgery (OPCAB): A Necessity or Myth? Mymensingh Med J 2023; 32:421-429. [PMID: 37002753] [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: 04/04/2023]
Abstract
In our country majority of the coronary artery bypass surgery (CABG) are done off-pump and was reported having excellent clinical outcome along with cost efficiency by various investigators. Heparin is commonly used as most effective anticoagulant, and protamine sulfate is now generally used to reverse the anticoagulant action of heparin. While under dosing of protamine may result in incomplete heparin reversal and prolonged anticoagulation, protamine overdosing is associated with impaired clot formation exerted by the intrinsic anti-coagulation properties of protamine itself, moreover protamine administration is associated with mild to severe cardiovascular and pulmonary complications. Apart from traditional full neutralization of heparin now-a-days, half dose protamine was also introduced showing good outcome regarding lower activated clotting time (ACT), overall, less surgical bleeding with less transfusion. This comparative study was designed to detect differences between traditional and decreased protamine dosing in Off-Pump Coronary Artery Bypass (OPCAB) surgery. Four hundred (400) patients who underwent Off-Pump Coronary Artery Bypass Surgery (OPCAB) surgery at our institution over a period of 12 months were analyzed and were divided into two groups. Group A- received 0.5mg of protamine per 100 unit of heparin; Group B-received 1.0mg of protamine per 100 unit of heparin. ACT, blood loss, hemoglobin and platelet count units of blood and blood product transfusion requirements, clinical outcome and hospital stay were assessed in each patient. This study showed that 0.5mg of protamine per 100 unit of heparin was always able to reverse the anticoagulant effect of heparin with no significant difference in hemodynamic parameters, amount of blood loss and requirements of blood transfusion in between the groups. A standard protamine dosing formula (protamine-heparin at ratio of 1:1) adequate for on-pump cardiac surgical procedures significantly overestimates protamine requirements for OPCAB. Patients treated with decreased protamine do not appear to have adverse outcomes in terms of post-operative bleeding.
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Affiliation(s)
- S Dasgupta
- Dr Saikat Das Gupta, Associate Consultant, Department of Cardiac Surgery, Square Hospitals Ltd, Dhaka, Bangladesh; E-mail:
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Krishna S, Ravina M, Kumar A, Dasgupta S, Kote R. 18F Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Findings in a Case of Metastatic Eccrine Porocarcinoma - An Extremely Rare Malignant Adnexal Tumor. Indian J Nucl Med 2023; 38:89-90. [PMID: 37180188 PMCID: PMC10171768 DOI: 10.4103/ijnm.ijnm_140_22] [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: 08/06/2022] [Accepted: 09/22/2022] [Indexed: 02/25/2023] Open
Abstract
Porocarcinoma is a rare malignant neoplasm of eccrine sweat glands representing 0.005 to 0.1% of all cutaneous tumors. As eccrine porocarcinoma carries a high risk of recurrence and metastases, early diagnosis and management are crucial to lower mortality rate. We present the case of porocarcinoma in a 69-years-old woman who underwent 18F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) for staging the disease. PET/CT showed metabolically active multiple cutaneous lesions and also picked up lymph nodal and distant metastases to lungs and breast accurately. PET/CT is useful for accurate staging of the disease and for treatment planning.
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Affiliation(s)
- Sarin Krishna
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Mudalsha Ravina
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Amit Kumar
- Department of Medical Oncology, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Subhajit Dasgupta
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Rutuja Kote
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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Krishna S, Mishra AK, Ravina M, Kashyap Y, Bansal H, Dasgupta S. Primary Biliary Tuberculosis Masquerading Cholangiocarcinoma in 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography. Indian J Nucl Med 2022; 37:265-267. [PMID: 36686295 PMCID: PMC9855251 DOI: 10.4103/ijnm.ijnm_204_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/13/2022] [Accepted: 02/23/2022] [Indexed: 11/05/2022] Open
Abstract
Hepatobiliary involvement is a less common manifestation of abdominal tuberculosis. We present the case of a 42-year-old female who presented with fever, abdominal pain, and jaundice of 2 months duration. 18F-fluorodeoxyglucose positron emission tomography/computed tomography done for disease evaluation suggested the likely possibility of cholangiocarcinoma but excision biopsy from periportal lymph node later confirmed a granulomatous etiology and she was successfully treated with antitubercular therapy.
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Affiliation(s)
- Sarin Krishna
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Ajit Kumar Mishra
- Department of General Surgery, DKS Hospital, Raipur, Chhattisgarh, India
| | - Mudalsha Ravina
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Yashwanth Kashyap
- Department of Medical Oncology, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Himanshu Bansal
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Subhajit Dasgupta
- Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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Khoja K, Dasgupta S, Frodsham L, Patra P, Chanda A, Yap T. O-199 Couples presenting to Infertility clinics - Are they really infertile? Hum Reprod 2022. [DOI: 10.1093/humrep/deac105.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Are couples presenting to infertility clinics actually infertile, or is there an undiagnosed underlying sexual dysfunction whose treatment can lead to natural conception avoiding the need for assisted reproductive techniques?
Summary answer
All couples presenting with infertility should be asked about sexual function. If sexual dysfunction is diagnosed, a signicant proportion can achieve pregnancy without assisted reproduction
What is known already
Infertility is defined as the inability to conceive after one year of frequent and regular unprotected sexual intercourse (SI). Although sexual histories are a key part of primary care screening guidelines for infertility, they are often overlooked during the infertility work-up. It is postulated that a large proportion of couples presenting to infertility clinics have underlying sexual dysfunction. Treatment through specialist counselling for couples with sexual dysfunction can help achieve pregnancy, negating the need for complex assisted reproductive techniques such as intravaginal insemination (IVI) and intrauterine insemination (IUl).
Study design, size, duration
108 couples were recruited from a national fertility clinic. The duration of the study was 3.5 years, from January 2016 to August 2019. The study was based primarily on surveys, where diagnostic work-up for infertility included tools for measuring sexual dysfunction, such as the IIEF-15 questionnaire. Our objectives were to find the extent of improvement of SI before and after specialist referral, and the time to conceive (TTC) in those with and without sexual dysfunction.
Participants/materials, setting, methods
Couples who never had successful completion of SI (despite producing an ejaculate sample) prior to clinic attendance were included. Treatment via specialist referral was then offered to these patients.
Data were analysed to compare outcomes between those who subsequently had successful SI (“Group A”) and those who had not had successful SI (“Group B”). Both groups were counselled for fertility treatments, such as IVI and IUI. TTC between the groups was analysed using Kaplan-Meier analysis
Main results and the role of chance
Out of 2057 couples presenting to the Infertility Clinic, 128 (5.98%) had never had successful SI. From this, 108 couples were included in the study. Two-thirds of couples revealed sexual difficulties at the beginning of the initial consultation. In men, erectile dysfunction was the predominant cause (70.4%, n = 76). In women, dyspareunia was the leading problem (18.2%, N = 20). Fertility investigations, which included hormone profiles, revealed normal results in most cases.
Treatment via referral to specialist sexual counselling was offered to all couples. Only 33 couples reported successful SI during subsequent visits (Group A). 13 of these 33 couples went on to conceive (11 naturally, 1 by IUI and 1 by IVI). The rest (n = 75), who had no improvement (Group B), had a significantly longer duration of sexual dysfunction, which was also more severe. Out of these 75 couples, 8 conceived (0 naturally, 6 by IVI, and 2 by IUI).The IIEF-15 scores (index for sexual dysfunction) between groups A and B were 10.72 ± 4.28 vs. 8 ± 4.73, P-value 0.0142. Group A couples (less severe sexual dysfunction) conceived earlier than Group B (mean duration 27.2 weeks vs. 48.8 weeks log-rank P value <0.001).
Limitations, reasons for caution
The main limitations of this study include a small sample size and a small minority of couples refusing to undergo specialist counselling despite having sexual difficulties as they were only interested in assisted reproductive interventions such as IUl and IVI. These limitations hinder the internal/external validity of the study.
Wider implications of the findings
All couples presenting with infertility should be asked about sexual function. If sexual dysfunction is diagnosed, a signicant proportion can be helped to achieve pregnancy without assisted reproduction. In the cases of couples with persistent sexual difficulty, assisted reproductive techniques like IUI and IVI give a reasonable pregnancy rate.
Trial registration number
Not applicable
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Affiliation(s)
- K Khoja
- Guy's and St Thomas' NHS Foundation Trust, Dept. of Urology , London, United Kingdom
| | - S Dasgupta
- RSV Hospital Kolkata, Reproductive Medicine , Kolkata, India
| | - L.C.G Frodsham
- Guy's and St Thomas' NHS Foundation Trust, Sexual reproduction and health , London, United Kingdom
| | - P Patra
- Purba Medinipur District Hospital , Psychiatry, West Bengal, India
| | - A Chanda
- Biometrics- Quartesian Clinical Research , Biostatistics, West bengal, India
| | - T Yap
- Guy's and St Thomas' NHS Foundation Trust, Dept. of Urology , London, United Kingdom
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Abdel-Latif M, Nyantakyi A, Frodsham L, Patra P, Chanda A, Yap T, Dasgupta S. P-118 Timed Intercourse exacerbates the risk of sexual dysfunction in men & women without an improvement in time to pregnancy. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.113] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Investigate the differences in sexual dysfunction and time to pregnancy between infertile couples pursuing timed intercourse and Regular Intercourse (RI at least twice a week).
Summary answer
TI significantly increased the risk of SD compared to RI for both males and females after adjusting all other contributing factors.
What is known already
Timed Intercourse (TI) involves aligning sexual intercourse to the time around ovulation to increase the chance of conception in couples trying to conceive. Whilst TI is often advocated to increase conception rates and potentially accelerate the time to pregnancy (TTP) for infertile couples, the stressful nature of this approach may be associated with adverse effects such as sexual dysfunction (SD) within the couple.
Study design, size, duration
This prospective cohort study recruited 371 infertile couples who had been trying to conceive for more than a year, presenting to three regional infertility clinics between January 2016 and December 2018. 283 couples pursued TI and 88 couples pursued RI for a year, with all couples having no pre-existing sexual or psychiatric illness, and no medical contraindications to frequent intercourse.
Participants/materials, setting, methods
The SD score of both partners was assessed at the first visit using the validated Arizona Sexual Experiences Scale (ASEX) and the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V). TTP was determined using Kaplan Meier Analysis in couples for whom natural conception was possible and no reversible fertility pathology was identified.
Main results and the role of chance
Timed Intercourse (TI) involves aligning sexual intercourse to the time around ovulation to increase the chance of conception in couples trying to conceive. Whilst TI is often advocated to increase conception rates and potentially accelerate the time to pregnancy (TTP) for infertile couples, the stressful nature of this approach may be associated with adverse effects such as sexual dysfunction (SD) within the couple.
TI significantly increased the risk of SD compared to RI for both males (Odds ratio [OR] 15.24, 95% confidence interval [CI] 7.96-29.15) and females (OR 5.52, 95% CI 2.38- 12.78), after adjusting for age, medical disorders, obesity, smoking, cause of infertility, and previous assisted reproductive techniques. TI carried a higher risk of developing erectile dysfunction, premature ejaculation, male hypoactive sexual dysfunction, female sexual interest-arousal disorder, and female orgasmic disorder. The TTP for natural conception was similar between TI and RI (p = 0.1365).
Limitations, reasons for caution
TI, a well-known strategy for increasing conception rates, did not improve time to natural conception compared to regular sexual intercourse. In contrast, the risk of sexual dysfunction in both men and women was significantly higher in TI, compared with RI.
Wider implications of the findings
This large study raises the question of effectiveness of the long-held belief that TI (intercourse limited around the ovulation-time, based on different methods of ovulation-prediction) improves pregnancy outcomes.
Trial registration number
N/A
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Affiliation(s)
- M Abdel-Latif
- Guy's and St. Thomas' NHS Foundation Trust, Urology Department, United kingdom , United Kingdom
| | - A Nyantakyi
- King’s College London, GKT School of Medicine , London, United Kingdom
| | - L.C Frodsham
- Guy’s and St Thomas’ NHS Foundation Trust, Department of Sexual Reproductive Health , London, United Kingdom
| | - P Patra
- Purba Medinipur District Hospital, Department of Psychiatry , West Bengal, India
| | - A Chanda
- Quartesian Clinical Research, Department of Biostatistics - Biometrics , West Bengal, India
| | - T Yap
- Guy's and St. Thomas' NHS Foundation Trust, Urology Department , London, United Kingdom
| | - S Dasgupta
- Genome Fertility Centre, Department of Reproductive Medicine , Kolkata, India
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12
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Wang X, Zhang G, Dasgupta S, Niewold EL, Li C, Li Q, Luo X, Tan L, Ferdous A, Lorenzi PL, Rothermel BA, Gillette TG, Adams CM, Scherer PE, Hill JA, Wang ZV. ATF4 Protects the Heart From Failure by Antagonizing Oxidative Stress. Circ Res 2022; 131:91-105. [PMID: 35574856 PMCID: PMC9351829 DOI: 10.1161/circresaha.122.321050] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cellular redox control is maintained by generation of reactive oxygen/nitrogen species balanced by activation of antioxidative pathways. Disruption of redox balance leads to oxidative stress, a central causative event in numerous diseases including heart failure. Redox control in the heart exposed to hemodynamic stress, however, remains to be fully elucidated. METHODS Pressure overload was triggered by transverse aortic constriction in mice. Transcriptomic and metabolomic regulations were evaluated by RNA-sequencing and metabolomics, respectively. Stable isotope tracer labeling experiments were conducted to determine metabolic flux in vitro. Neonatal rat ventricular myocytes and H9c2 cells were used to examine molecular mechanisms. RESULTS We show that production of cardiomyocyte NADPH, a key factor in redox regulation, is decreased in pressure overload-induced heart failure. As a consequence, the level of reduced glutathione is downregulated, a change associated with fibrosis and cardiomyopathy. We report that the pentose phosphate pathway and mitochondrial serine/glycine/folate metabolic signaling, 2 NADPH-generating pathways in the cytosol and mitochondria, respectively, are induced by transverse aortic constriction. We identify ATF4 (activating transcription factor 4) as an upstream transcription factor controlling the expression of multiple enzymes in these 2 pathways. Consistently, joint pathway analysis of transcriptomic and metabolomic data reveal that ATF4 preferably controls oxidative stress and redox-related pathways. Overexpression of ATF4 in neonatal rat ventricular myocytes increases NADPH-producing enzymes' whereas silencing of ATF4 decreases their expression. Further, stable isotope tracer experiments reveal that ATF4 overexpression augments metabolic flux within these 2 pathways. In vivo, cardiomyocyte-specific deletion of ATF4 exacerbates cardiomyopathy in the setting of transverse aortic constriction and accelerates heart failure development, attributable, at least in part, to an inability to increase the expression of NADPH-generating enzymes. CONCLUSIONS Our findings reveal that ATF4 plays a critical role in the heart under conditions of hemodynamic stress by governing both cytosolic and mitochondrial production of NADPH.
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Affiliation(s)
- Xiaoding Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Guangyu Zhang
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Subhajit Dasgupta
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Erica L. Niewold
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Chao Li
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Qinfeng Li
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Xiang Luo
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Lin Tan
- Metabolomics Core Facility, Department of Bioinformatics & Computational Biology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Anwarul Ferdous
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philip L. Lorenzi
- Metabolomics Core Facility, Department of Bioinformatics & Computational Biology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Beverly A. Rothermel
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Thomas G. Gillette
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Christopher M. Adams
- Division of Endocrinology, Metabolism and Nutrition, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Philipp E. Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Joseph A. Hill
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zhao V. Wang
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Wadhwa B, Grover P, Dasgupta S, Uppal A. Role of power distance phenomena in blended learning in higher education post-Covid-19. CM 2022. [DOI: 10.18137/cardiometry.2022.22.343350] [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
COVID has posed several challenges for higher education. There is a rise in blended teaching and learning models that can improve the quality of education, observed Raman. Classroom interaction vital in quality of education is affected by power distance between the teacher and students, states Kasuya. Much research has been done on blended learning but hardly any on the role of power distance in blended learning in higher education, specifically post COVID. Keeping in mind the growing significance of blended learning shortly, it becomes strategically important to understand the role of power distance in blended learning in higher education post-COVID-19. This research paper tries to address the research gap. The study is exploratory, exploring the role of power distancing in blended learning formats during post-COVID-19. The findings indicate that there is a relationship between power distance and the autonomy of an individual. The higher the power distance between a teacher and a student from the teacher’s perspective, it becomes teacher-centred learning. So blended learning with the best of low power distances in terms of the media and delivery mechanism of offline and online ensures the mitigation of power between the teacher and the taught. The research will help the universities create a perfect blended learning format that enhances the quality of higher education. Due to the paucity of time and resources and a ban on respondent interaction due to pandemics, this research is based on secondary data analysis.
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14
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Waghmare A, Chugh N, Sagaram U, Arun S, Menon D, Subhash GV, Nagle V, Dattaroy T, Dasgupta S. Characterization of storage stability of microalgal biomass for its applications as protein feed ingredients in animal and aquafeeds. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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15
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Kanungo SK, Whalen JD, Lu Y, Yuan M, Dasgupta S, Dunning FB, Hazzard KRA, Killian TC. Realizing topological edge states with Rydberg-atom synthetic dimensions. Nat Commun 2022; 13:972. [PMID: 35190541 PMCID: PMC8861171 DOI: 10.1038/s41467-022-28550-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/18/2022] [Indexed: 11/09/2022] Open
Abstract
A discrete degree of freedom can be engineered to match the Hamiltonian of particles moving in a real-space lattice potential. Such synthetic dimensions are powerful tools for quantum simulation because of the control they offer and the ability to create configurations difficult to access in real space. Here, in an ultracold 84Sr atom, we demonstrate a synthetic-dimension based on Rydberg levels coupled with millimeter waves. Tunneling amplitudes between synthetic lattice sites and on-site potentials are set by the millimeter-wave amplitudes and detunings respectively. Alternating weak and strong tunneling in a one-dimensional configuration realizes the single-particle Su-Schrieffer-Heeger (SSH) Hamiltonian, a paradigmatic model of topological matter. Band structure is probed through optical excitation from the ground state to Rydberg levels, revealing symmetry-protected topological edge states at zero energy. Edge-state energies are robust to perturbations of tunneling-rates that preserve chiral symmetry, but can be shifted by the introduction of on-site potentials. Synthetic dimensions, states of a system engineered to act as if they were a reconfigurable extra spatial dimension, have been demonstrated with different systems previously. Here the authors create a synthetic dimension using Rydberg atoms and configure it to support topological edge states.
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16
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Divyaveer S, Dasgupta S, Ray Chaudhury A, Banerjee A, Banerjee S, Das Bhattacharya T, Bagur V, Dubey U, Bhattacharjee K, Saini S, Abraham A, Pandey R. POS-120 ROLE OF STEROIDS IN IGA NEPHROPATHY AND ITS CORRELATION TO HISTOPATHOLOGY. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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17
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Dasgupta S, Khoja K, Frodsham L, Patra P, Chanda A, Yap T. Couples presenting to Infertility Clinics - are they really infertile? Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00880-6] [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: 11/04/2022]
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18
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Das A, Dasgupta S, Gong Y, Shah UA, Fradley MG, Cheng RK, Roy B, Guha A. Cardiotoxicity as an adverse effect of immunomodulatory drugs and proteasome inhibitors in multiple myeloma: A network meta-analysis of randomized clinical trials. Hematol Oncol 2021; 40:233-242. [PMID: 34940983 DOI: 10.1002/hon.2959] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/01/2021] [Accepted: 12/12/2021] [Indexed: 01/21/2023]
Abstract
We aim to determine the cumulative and comparative risk of cardiovascular events associated with different Immunomodulatory Drugs (iMiDs) and Proteasome Inhibitor (PIs) in Multiple Myeloma (MM) patients through pairwise and network meta-analysis. Electronic searches were conducted using Ovid MEDLINE, EMBASE, CINAHL, Web of Science, and Clinical Trial Registry (Clinical Trials.gov) up to May 2021. Phase 3 randomized clinical trials (RCTs) reporting cardiotoxicity in MM patients (newly diagnoses and/or relapsed) treated with iMiD and/or PI. Studies, where iMiD or PI was used alongside the chemotherapy versus placebo or no additional drugs (control) in the other arm were included. The primary outcome was the presence of cardiotoxicity after follow-up. Pairwise meta-analysis and network meta-analysis were performed using the frequentist's approach to estimate the odds ratio (OR). Twenty RCTs with 10,373 MM patients were included in this analysis. Eleven studies compared iMiDs with control, seven studies compared PIs with control, and two studies compared bortezomib against carfilzomib. CTACE high-grade (≥grade 3) cardiotoxic events were increased with iMiDs compared to their control counterpart (OR 2.05; 95% CI 1.30-3.26). Similar high-grade cardiotoxicity was also noted more frequently with PI use when compared to the control group (OR 1.67; 95% CI 1.17-2.40). Among the PIs, carfilzomib was associated with a maximum risk of cardiotoxicity (OR 2.68; 95% CI 1.63-4.40). There was no evidence of publication bias among studies. iMiDs and PIs, particularly carfilzomib, appear to be associated with increased risk of high-grade cardiovascular events in MM patients.
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Affiliation(s)
- Avash Das
- Department of Molecular Genetics, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Subhajit Dasgupta
- Department of Molecular Genetics, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Yan Gong
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, Florida, USA
| | - Urvi A Shah
- Department of Medicine, Myeloma Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Michael G Fradley
- Department of Medicine, Division of Cardiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Richard K Cheng
- Cardiology Division, University of Washington, Seattle, Washington, USA
| | - Bhaskar Roy
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Avirup Guha
- Harrington Heart and Vascular Institute, UH Cleveland Medical Center, Cleveland, Ohio, USA.,Department of Medicine, Division of Cardiology, Augusta University, Augusta, Georgia, USA
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Chauhan N, Bagga N, Banchhor S, Garg C, Sharma A, Datta A, Dasgupta S, Bulusu A. BOX engineering to mitigate negative differential resistance in MFIS negative capacitance FDSOI FET: an analog perspective. Nanotechnology 2021; 33:085203. [PMID: 34678795 DOI: 10.1088/1361-6528/ac328a] [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: 06/18/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Till date, the existing understanding of negative differential resistance (NDR) is obtained from metal-ferro-metal-insulator-semiconductor (MFMIS) FET, and it has been utilized for both MFMIS and metal-ferro-insulator-semiconductor (MFIS) based NCFETs. However, in MFIS architecture, the ferroelectric capacitance (CFE) is not a lumped capacitance. Therefore, for MFIS negative capacitance (NC) devices, the physical explanation which governs the NDR mechanism needs to be addressed. In this work, for the first time, we present the first principle explanation of the NDR effect in MFIS NC FDSOI. We found that the output current variation with the drain to source voltage (VDS), (i.e.gds) primarily depends upon two parameters: (a)VDSdependent inversion charge gradient (∂n/∂VDS); (b)VDSsensitive electron velocity (∂v/∂VDS), and the combined effect of these two dependencies results in NDR. Further, to mitigate the NDR effect, we proposed the BOX engineered NC FDSOI FET, in which the buried oxide (BOX) layer is subdivided into the ferroelectric (FE) layer and the SiO2layer. In doing so, the inversion charge in the channel is enhanced by the BOX engineered FE layer, which in turn mitigates the NDR and a nearly zerogdswith a minimal positive slope has been obtained. Through well-calibrated TCAD simulations, by utilizing the obtained positivegds, we also designed aVDSindependent constant current mirror which is an essential part of analog circuits. Furthermore, we discussed the impact of the FE parameter (remanent polarization and coercive field) variation on the device performances. We have also compared the acquired results with existing literature on NC-based devices, which justifies that our proposed structure exhibits complete diminution of NDR, thus enabling its use in analog circuit design.
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Affiliation(s)
- Nitanshu Chauhan
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
- Department of Electronics and Communication Engineering, NIT Uttarakhand, Srinagar Pauri Garhwal, India
| | | | - Shashank Banchhor
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
| | - Chirag Garg
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
| | | | - Arnab Datta
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
| | - S Dasgupta
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
| | - Anand Bulusu
- Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, India
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20
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Dasgupta S, Bandyopadhyay M. Molecular docking of SARS-COV-2 Spike epitope sequences identifies heterodimeric peptide-protein complex formation with human Zo-1, TLR8 and brain specific glial proteins. Med Hypotheses 2021; 157:110706. [PMID: 34673372 PMCID: PMC8511551 DOI: 10.1016/j.mehy.2021.110706] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/25/2021] [Accepted: 10/04/2021] [Indexed: 12/24/2022]
Abstract
SARS-COV-2 infection causes severe respiratory tract illness leading to asphyxia and death. The onset of infection is associated with loss of smell, blurred vision, headache with bronchopulmonary symptoms. The clinical observations of neurological abnormalities lead us to address the question, does the virus enter into brain and what is the underlying mechanism of brain infection? The working hypothesis is, SARS-COV-2 Spike epitopes modify blood brain barrier and infect glial cells to induce brain inflammation in genetically diverse human population. The hypothesis is tested by determining binding or interacting ability of virus Spike epitope peptides M1Lys60 and Ala240Glu300 with human toll-like receptor 8 (TLR 8), brain targeted Vascular Cell adhesion Molecules (VCAM1) proteins, Zonula Occludens (ZO), glial cell specific protein NDRG2 and Apo- S100B. The molecular dynamic experiments are performed, and root mean square deviation (RMSD) values are determined for interactions between the Spike peptides and selected proteins. The observations demonstrate formation of heterodimeric complex between the epitope peptides and selected protein structures. The viral epitopes have ability to bind with HLA-DRB1 15:01, 07:01 or 03.01 alleles thus found immunogenic in nature. The observations altogether suggest entry of these Spike protein epitopes into human brain causes inflammation.
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Affiliation(s)
- Subhajit Dasgupta
- Regenerative Neuro Immune Research Institute of South Carolina, Charleston, United States; NeuroDrug Research LLC, Charleston, SC, United States.
| | - Mausumi Bandyopadhyay
- Department of Natural Sciences, Biology Division, Trident Technical College, North Charleston, SC, United States
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21
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Gulati U, Ray K, Dasgupta S, Jerusik B. 124 Comparison of First-Pass Peripheral Intravenous Cannulation Using a Handheld Ultrasound Device to Using a Traditional High-End Ultrasound System: A Randomized Controlled Trial. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.134] [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: 10/20/2022]
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22
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Alexeev GD, Alexeev MG, Amoroso A, Andrieux V, Anosov V, Antoshkin A, Augsten K, Augustyniak W, Azevedo CDR, Badełek B, Balestra F, Ball M, Barth J, Beck R, Bedfer Y, Berenguer Antequera J, Bernhard J, Bodlak M, Bradamante F, Bressan A, Burtsev VE, Chang WC, Chatterjee C, Chiosso M, Chumakov AG, Chung SU, Cicuttin A, Correia PMM, Crespo ML, D'Ago D, Dalla Torre S, Dasgupta SS, Dasgupta S, Denisenko I, Denisov OY, Donskov SV, Doshita N, Dreisbach C, Dünnweber W, Dusaev RR, Efremov A, Eversheim PD, Faccioli P, Faessler M, Finger M, Finger M, Fischer H, Franco C, Friedrich JM, Frolov V, Gautheron F, Gavrichtchouk OP, Gerassimov S, Giarra J, Gnesi I, Gorzellik M, Grasso A, Gridin A, Grosse Perdekamp M, Grube B, Guskov A, von Harrach D, Heitz R, Herrmann F, Horikawa N, d'Hose N, Hsieh CY, Huber S, Ishimoto S, Ivanov A, Iwata T, Jandek M, Jary V, Joosten R, Jörg P, Kabuß E, Kaspar F, Kerbizi A, Ketzer B, Khaustov GV, Khokhlov YA, Kisselev Y, Klein F, Koivuniemi JH, Kolosov VN, Kondo Horikawa K, Konorov I, Konstantinov VF, Kotzinian AM, Kouznetsov OM, Koval A, Kral Z, Krinner F, Kulinich Y, Kunne F, Kurek K, Kurjata RP, Kveton A, Lavickova K, Levorato S, Lian YS, Lichtenstadt J, Lin PJ, Longo R, Lyubovitskij VE, Maggiora A, Magnon A, Makins N, Makke N, Mallot GK, Maltsev A, Mamon SA, Marianski B, Martin A, Marzec J, Matoušek J, Matsuda T, Mattson G, Meshcheryakov GV, Meyer M, Meyer W, Mikhailov YV, Mikhasenko M, Mitrofanov E, Mitrofanov N, Miyachi Y, Moretti A, Nagaytsev A, Naim C, Neyret D, Nový J, Nowak WD, Nukazuka G, Nunes AS, Olshevsky AG, Ostrick M, Panzieri D, Parsamyan B, Paul S, Pekeler H, Peng JC, Pešek M, Peshekhonov DV, Pešková M, Pierre N, Platchkov S, Pochodzalla J, Polyakov VA, Pretz J, Quaresma M, Quintans C, Reicherz G, Riedl C, Rudnicki T, Ryabchikov DI, Rybnikov A, Rychter A, Samoylenko VD, Sandacz A, Sarkar S, Savin IA, Sbrizzai G, Schmieden H, Selyunin A, Sinha L, Slunecka M, Smolik J, Srnka A, Steffen D, Stolarski M, Subrt O, Sulc M, Suzuki H, Sznajder P, Tessaro S, Tessarotto F, Thiel A, Tomsa J, Tosello F, Townsend A, Tskhay V, Uhl S, Vasilishin BI, Vauth A, Veit BM, Veloso J, Ventura B, Vidon A, Virius M, Wagner M, Wallner S, Zaremba K, Zavada P, Zavertyaev M, Zemko M, Zemlyanichkina E, Zhao Y, Ziembicki M. Triangle Singularity as the Origin of the a_{1}(1420). Phys Rev Lett 2021; 127:082501. [PMID: 34477443 DOI: 10.1103/physrevlett.127.082501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 05/04/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
The COMPASS Collaboration experiment recently discovered a new isovector resonancelike signal with axial-vector quantum numbers, the a_{1}(1420), decaying to f_{0}(980)π. With a mass too close to and a width smaller than the axial-vector ground state a_{1}(1260), it was immediately interpreted as a new light exotic meson, similar to the X, Y, Z states in the hidden-charm sector. We show that a resonancelike signal fully matching the experimental data is produced by the decay of the a_{1}(1260) resonance into K^{*}(→Kπ)K[over ¯] and subsequent rescattering through a triangle singularity into the coupled f_{0}(980)π channel. The amplitude for this process is calculated using a new approach based on dispersion relations. The triangle-singularity model is fitted to the partial-wave data of the COMPASS experiment. Despite having fewer parameters, this fit shows a slightly better quality than the one using a resonance hypothesis and thus eliminates the need for an additional resonance in order to describe the data. We thereby demonstrate for the first time in the light-meson sector that a resonancelike structure in the experimental data can be described by rescattering through a triangle singularity, providing evidence for a genuine three-body effect.
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Affiliation(s)
- G D Alexeev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M G Alexeev
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - A Amoroso
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - V Andrieux
- CERN, 1211 Geneva 23, Switzerland
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - V Anosov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Antoshkin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - K Augsten
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - W Augustyniak
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - C D R Azevedo
- Department of Physics, University of Aveiro, I3N, 3810-193 Aveiro, Portugal
| | - B Badełek
- Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
| | - F Balestra
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - M Ball
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - J Barth
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Y Bedfer
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Berenguer Antequera
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - J Bernhard
- CERN, 1211 Geneva 23, Switzerland
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - M Bodlak
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | | | - A Bressan
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - V E Burtsev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - W-C Chang
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - C Chatterjee
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - M Chiosso
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - A G Chumakov
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - S-U Chung
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - A Cicuttin
- Trieste Section of INFN, 34127 Trieste, Italy
| | - P M M Correia
- Department of Physics, University of Aveiro, I3N, 3810-193 Aveiro, Portugal
| | - M L Crespo
- Trieste Section of INFN, 34127 Trieste, Italy
| | - D D'Ago
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | | | - S S Dasgupta
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
| | - S Dasgupta
- Trieste Section of INFN, 34127 Trieste, Italy
| | - I Denisenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | | | - S V Donskov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - N Doshita
- Yamagata University, Yamagata 992-8510, Japan
| | - Ch Dreisbach
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - W Dünnweber
- Department of Physics, University of Aveiro, I3N, 3810-193 Aveiro, Portugal
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
- Institute of Scientific Instruments of the CAS, 61264 Brno, Czech Republic
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
- CERN, 1211 Geneva 23, Switzerland
- Technical University in Liberec, 46117 Liberec, Czech Republic
- LIP, 1649-003 Lisbon, Portugal
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
- University of Miyazaki, Miyazaki 889-2192, Japan
- Lebedev Physical Institute, 119991 Moscow, Russia
- Physik Department, Technische Universität München, 85748 Garching, Germany
- Nagoya University, 464 Nagoya, Japan
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
- Yamagata University, Yamagata 992-8510, Japan
| | - R R Dusaev
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - A Efremov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - P D Eversheim
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | | | - M Faessler
- Department of Physics, University of Aveiro, I3N, 3810-193 Aveiro, Portugal
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
- Institute of Scientific Instruments of the CAS, 61264 Brno, Czech Republic
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
- CERN, 1211 Geneva 23, Switzerland
- Technical University in Liberec, 46117 Liberec, Czech Republic
- LIP, 1649-003 Lisbon, Portugal
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
- University of Miyazaki, Miyazaki 889-2192, Japan
- Lebedev Physical Institute, 119991 Moscow, Russia
- Physik Department, Technische Universität München, 85748 Garching, Germany
- Nagoya University, 464 Nagoya, Japan
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
- Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
- Yamagata University, Yamagata 992-8510, Japan
| | - M Finger
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - M Finger
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - H Fischer
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | | | - J M Friedrich
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - V Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- CERN, 1211 Geneva 23, Switzerland
| | - F Gautheron
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - O P Gavrichtchouk
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Gerassimov
- Lebedev Physical Institute, 119991 Moscow, Russia
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - J Giarra
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - I Gnesi
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - M Gorzellik
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - A Grasso
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - A Gridin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Grosse Perdekamp
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - B Grube
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - A Guskov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - D von Harrach
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - R Heitz
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - F Herrmann
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | | | - N d'Hose
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - C-Y Hsieh
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - S Huber
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - S Ishimoto
- Yamagata University, Yamagata 992-8510, Japan
| | - A Ivanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - T Iwata
- Yamagata University, Yamagata 992-8510, Japan
| | - M Jandek
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - V Jary
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - R Joosten
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - P Jörg
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - E Kabuß
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - F Kaspar
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - A Kerbizi
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - B Ketzer
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - G V Khaustov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - Yu A Khokhlov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - Yu Kisselev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Klein
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - J H Koivuniemi
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - V N Kolosov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | | | - I Konorov
- Lebedev Physical Institute, 119991 Moscow, Russia
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - V F Konstantinov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | | | - O M Kouznetsov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Koval
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - Z Kral
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - F Krinner
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - Y Kulinich
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - F Kunne
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - K Kurek
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - R P Kurjata
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - A Kveton
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - K Lavickova
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - S Levorato
- CERN, 1211 Geneva 23, Switzerland
- Trieste Section of INFN, 34127 Trieste, Italy
| | - Y-S Lian
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - J Lichtenstadt
- School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
| | - P-J Lin
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - R Longo
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | | | - A Maggiora
- Torino Section of INFN, 10125 Torino, Italy
| | - A Magnon
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
| | - N Makins
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - N Makke
- Trieste Section of INFN, 34127 Trieste, Italy
| | - G K Mallot
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
- CERN, 1211 Geneva 23, Switzerland
| | - A Maltsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S A Mamon
- Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - B Marianski
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - A Martin
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - J Marzec
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - J Matoušek
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192, Japan
| | - G Mattson
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - G V Meshcheryakov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Meyer
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - W Meyer
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
| | - Yu V Mikhailov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - M Mikhasenko
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
- CERN, 1211 Geneva 23, Switzerland
| | - E Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - N Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Miyachi
- Yamagata University, Yamagata 992-8510, Japan
| | - A Moretti
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - A Nagaytsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - C Naim
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - D Neyret
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Nový
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - W-D Nowak
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - G Nukazuka
- Yamagata University, Yamagata 992-8510, Japan
| | | | - A G Olshevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Ostrick
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - D Panzieri
- Torino Section of INFN, 10125 Torino, Italy
| | - B Parsamyan
- Department of Physics, University of Torino, 10125 Torino, Italy
- Torino Section of INFN, 10125 Torino, Italy
| | - S Paul
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - H Pekeler
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - J-C Peng
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - M Pešek
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - D V Peshekhonov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Pešková
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - N Pierre
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Platchkov
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Pochodzalla
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - V A Polyakov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - J Pretz
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - M Quaresma
- LIP, 1649-003 Lisbon, Portugal
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | | | - G Reicherz
- Institut für Experimentalphysik, Universität Bochum, 44780 Bochum, Germany
| | - C Riedl
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - T Rudnicki
- Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
| | - D I Ryabchikov
- Physik Department, Technische Universität München, 85748 Garching, Germany
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - A Rybnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Rychter
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - V D Samoylenko
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - A Sandacz
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - S Sarkar
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
| | - I A Savin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G Sbrizzai
- Department of Physics, University of Trieste, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - H Schmieden
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - A Selyunin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - L Sinha
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
| | - M Slunecka
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - J Smolik
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Srnka
- Institute of Scientific Instruments of the CAS, 61264 Brno, Czech Republic
| | - D Steffen
- CERN, 1211 Geneva 23, Switzerland
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | | | - O Subrt
- CERN, 1211 Geneva 23, Switzerland
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - M Sulc
- Technical University in Liberec, 46117 Liberec, Czech Republic
| | - H Suzuki
- Yamagata University, Yamagata 992-8510, Japan
| | - P Sznajder
- National Centre for Nuclear Research, 02-093 Warsaw, Poland
| | - S Tessaro
- Trieste Section of INFN, 34127 Trieste, Italy
| | - F Tessarotto
- CERN, 1211 Geneva 23, Switzerland
- Trieste Section of INFN, 34127 Trieste, Italy
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - J Tomsa
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - F Tosello
- Torino Section of INFN, 10125 Torino, Italy
| | - A Townsend
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA
| | - V Tskhay
- Lebedev Physical Institute, 119991 Moscow, Russia
| | - S Uhl
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | | | - A Vauth
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
- CERN, 1211 Geneva 23, Switzerland
| | - B M Veit
- CERN, 1211 Geneva 23, Switzerland
- Institut für Kernphysik, Universität Mainz, 55099 Mainz, Germany
| | - J Veloso
- Department of Physics, University of Aveiro, I3N, 3810-193 Aveiro, Portugal
| | - B Ventura
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Vidon
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Virius
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - M Wagner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - S Wallner
- Physik Department, Technische Universität München, 85748 Garching, Germany
| | - K Zaremba
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - P Zavada
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Zavertyaev
- Lebedev Physical Institute, 119991 Moscow, Russia
| | - M Zemko
- CERN, 1211 Geneva 23, Switzerland
- Faculty of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - E Zemlyanichkina
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Zhao
- Trieste Section of INFN, 34127 Trieste, Italy
| | - M Ziembicki
- Institute of Radioelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
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Khan D, Ara T, Ravi V, Rajagopal R, Tandon H, Parvathy J, Gonzalez EA, Asirvatham-Jeyaraj N, Krishna S, Mishra S, Raghu S, Bhati AS, Tamta AK, Dasgupta S, Kolthur-Seetharam U, Etchegaray JP, Mostoslavsky R, Rao PSM, Srinivasan N, Sundaresan NR. SIRT6 transcriptionally regulates fatty acid transport by suppressing PPARγ. Cell Rep 2021; 35:109190. [PMID: 34077730 PMCID: PMC8190874 DOI: 10.1016/j.celrep.2021.109190] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 03/08/2021] [Accepted: 05/07/2021] [Indexed: 12/27/2022] Open
Abstract
Pathological lipid accumulation is often associated with enhanced uptake of free fatty acids via specific transporters in cardiomyocytes. Here, we identify SIRT6 as a critical transcriptional regulator of fatty acid transporters in cardiomyocytes. We find that SIRT6 deficiency enhances the expression of fatty acid transporters, leading to enhanced fatty acid uptake and lipid accumulation. Interestingly, the haploinsufficiency of SIRT6 is sufficient to induce the expression of fatty acid transporters and cause lipid accumulation in murine hearts. Mechanistically, SIRT6 depletion enhances the occupancy of the transcription factor PPARγ on the promoters of critical fatty acid transporters without modulating the acetylation of histone 3 at Lys 9 and Lys 56. Notably, the binding of SIRT6 to the DNA-binding domain of PPARγ is critical for regulating the expression of fatty acid transporters in cardiomyocytes. Our data suggest exploiting SIRT6 as a potential therapeutic target for protecting the heart from metabolic diseases.
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Affiliation(s)
- Danish Khan
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Tarannum Ara
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Venkatraman Ravi
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Raksha Rajagopal
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Himani Tandon
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, India
| | - Jayadevan Parvathy
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, India; IISc-Mathematics Initiative, Indian Institute of Science, Bengaluru, India
| | - Edward A Gonzalez
- Department of Biological Sciences, Rutgers University, Newark, NJ, USA
| | - Ninitha Asirvatham-Jeyaraj
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Swati Krishna
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Sneha Mishra
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Sukanya Raghu
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Arvind Singh Bhati
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Ankit Kumar Tamta
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Subhajit Dasgupta
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Ullas Kolthur-Seetharam
- Tata Institute of Fundamental Research, Colaba, Mumbai, India; Tata Institute of Fundamental Research, Hyderabad, India
| | | | - Raul Mostoslavsky
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, USA
| | | | | | - Nagalingam Ravi Sundaresan
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India.
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Schiattarella GG, Altamirano F, Kim SY, Tong D, Ferdous A, Piristine H, Dasgupta S, Wang X, French KM, Villalobos E, Spurgin SB, Waldman M, Jiang N, May HI, Hill TM, Luo Y, Yoo H, Zaha VG, Lavandero S, Gillette TG, Hill JA. Xbp1s-FoxO1 axis governs lipid accumulation and contractile performance in heart failure with preserved ejection fraction. Nat Commun 2021; 12:1684. [PMID: 33727534 PMCID: PMC7966396 DOI: 10.1038/s41467-021-21931-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is now the dominant form of heart failure and one for which no efficacious therapies exist. Obesity and lipid mishandling greatly contribute to HFpEF. However, molecular mechanism(s) governing metabolic alterations and perturbations in lipid homeostasis in HFpEF are largely unknown. Here, we report that cardiomyocyte steatosis in HFpEF is coupled with increases in the activity of the transcription factor FoxO1 (Forkhead box protein O1). FoxO1 depletion, as well as over-expression of the Xbp1s (spliced form of the X-box-binding protein 1) arm of the UPR (unfolded protein response) in cardiomyocytes each ameliorates the HFpEF phenotype in mice and reduces myocardial lipid accumulation. Mechanistically, forced expression of Xbp1s in cardiomyocytes triggers ubiquitination and proteasomal degradation of FoxO1 which occurs, in large part, through activation of the E3 ubiquitin ligase STUB1 (STIP1 homology and U-box-containing protein 1) a novel and direct transcriptional target of Xbp1s. Our findings uncover the Xbp1s-FoxO1 axis as a pivotal mechanism in the pathogenesis of cardiometabolic HFpEF and unveil previously unrecognized mechanisms whereby the UPR governs metabolic alterations in cardiomyocytes.
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Affiliation(s)
- Gabriele G Schiattarella
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Advanced Biomedical Sciences, Federico II University, Naples, Italy
- Center for Cardiovascular Research (CCR), Department of Cardiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Translational Approaches in Heart Failure and Cardiometabolic Disease, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Francisco Altamirano
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Soo Young Kim
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Dan Tong
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Anwarul Ferdous
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Hande Piristine
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Subhajit Dasgupta
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Xuliang Wang
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kristin M French
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Elisa Villalobos
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Stephen B Spurgin
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Maayan Waldman
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nan Jiang
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Herman I May
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Theodore M Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yuxuan Luo
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Heesoo Yoo
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Vlad G Zaha
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Harold C. Simmons Comprehensive Cancer, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Parkland Health & Hospital System, Dallas, TX, USA
| | - Sergio Lavandero
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical & Pharmaceutical Sciences & Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Thomas G Gillette
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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25
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Phanthunane C, Wijers R, de Herdt M, Langeveld TPM, Koljenovic S, Dasgupta S, Sleijfer S, Baatenburg de Jong RJ, Hardillo J, Balcioglu HE, Debets R. B-cell clusters at the invasive margin associate with longer survival in early-stage oral-tongue cancer patients. Oncoimmunology 2021; 10:1882743. [PMID: 33643695 PMCID: PMC7894457 DOI: 10.1080/2162402x.2021.1882743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In oral-cancer, the number of tumor-infiltrating lymphocytes (TILs) associates with improved survival, yet the prognostic value of the cellular composition and localization of TILs is not defined. We quantified densities, localizations, and cellular networks of lymphocyte populations in 138 patients with T1-T2 primary oral-tongue squamous cell carcinoma treated with surgical resections without any perioperative (chemo)radiotherapy, and correlated outcomes to overall survival (OS). Multiplexed in-situ immunofluorescence was performed for DAPI, CD4, CD8, CD20, and pan-cytokeratin using formalin-fixed paraffin-embedded sections, and spatial distributions of lymphocyte populations were assessed in the tumor and stroma compartments at the invasive margin (IM) as well as the center of tumors. We observed a high density of CD4, CD8, and CD20 cells in the stroma compartment at the IM, but neither lymphocyte densities nor networks as single parameters associated with OS. In contrast, assessment of two contextual parameters within the stroma IM region of tumors, i.e., the number of CD20 cells within 20 µm radii of CD20 and CD4 cells, termed the CD20 Cluster Score, yielded a highly significant association with OS (HR 0.38; p = .003). Notably, the CD20 Cluster Score significantly correlated with better OS and disease-free survival in multivariate analysis (HR 0.34 and 0.47; p = .001 and 0.019) as well as with lower local recurrence rate (OR: 0.13; p = .028). Taken together, our study showed that the presence of stromal B-cell clusters at IM, in the co-presence of CD4 T-cells, associates with good prognosis in early oral-tongue cancer patients.
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Affiliation(s)
- C Phanthunane
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands.,Department of Medical Oncology, HRH Princess Chulabhorn College of Medical Science, Bangkok, Thailand
| | - R Wijers
- Departments of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - M de Herdt
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - T P M Langeveld
- Department of Otorhinolaryngology, Head and Neck Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - S Koljenovic
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - S Dasgupta
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - S Sleijfer
- Departments of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - R J Baatenburg de Jong
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - J Hardillo
- Departments of Otorhinolaryngology and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - H E Balcioglu
- Departments of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - R Debets
- Departments of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
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26
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Giorli A, Ferretti F, Biagini C, Salerni L, Bindi I, Dasgupta S, Pozza A, Gualtieri G, Gusinu R, Coluccia A, Mandalà M. A Literature Systematic Review with Meta-Analysis of Symptoms Prevalence in Covid-19: the Relevance of Olfactory Symptoms in Infection Not Requiring Hospitalization. Curr Treat Options Neurol 2020; 22:36. [PMID: 32874091 PMCID: PMC7453082 DOI: 10.1007/s11940-020-00641-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE OF REVIEW To investigate the association between the olfactory dysfunction and the more typical symptoms (fever, cough, dyspnoea) within the Sars-CoV-2 infection (COVID-19) in hospitalized and non-hospitalized patients. RECENT FINDINGS PubMed, Scopus and Web of Science databases were reviewed from May 5, 2020, to June 1, 2020. Inclusion criteria included English, French, German, Spanish or Italian language studies containing original data related to COVID19, anosmia, fever, cough, and dyspnoea, in both hospital and non-hospital settings. Two investigators independently reviewed all manuscripts and performed quality assessment and quantitative meta-analysis using validated tools. A third author arbitrated full-text disagreements. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), 11 of 135 studies fulfilled eligibility. Anosmia was estimated less prevalent than fever and cough (respectively rate difference = - 0.316, 95% CI: - 0.574 to - 0.058, Z = - 2.404, p < 0.016, k = 11 and rate difference = - 0.249, 95% CI: - 0.402 to - 0.096, Z = - 3.185, p < 0.001, k = 11); the analysis between anosmia and dyspnoea was not significant (rate difference = - 0.008, 95% CI: - 0.166 to 0.150, Z = - 0.099, p < 0.921, k = 8). The typical symptoms were significantly more frequent than anosmia in hospitalized more critical patients than in non-hospitalized ones (respectively [Q(1) = 50.638 p < 0.000, Q(1) = 52.520 p < 0.000, Q(1) = 100.734 p < 0.000). SUMMARY Patient with new onset olfactory dysfunction should be investigated for COVID-19. Anosmia is more frequent in non-hospitalized COVID-19 patients than in hospitalized ones.
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Affiliation(s)
- A. Giorli
- Otolaryngology Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - F. Ferretti
- Dipartimento Scienze Mediche Chirurgiche e Neuroscienze, Università di Siena, Siena, Italy
| | - C. Biagini
- Otolaryngology Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - L. Salerni
- Otolaryngology Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - I. Bindi
- Otolaryngology Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - S. Dasgupta
- Department of Audiovestibular Medicine and Neurotology, Alder Hey Children’s Hospital NHS Trust, Liverpool, UK
- United Kingdom and Sheffield Vertigo and Balance Centre, Sheffield, UK
| | - A. Pozza
- Dipartimento Scienze Mediche Chirurgiche e Neuroscienze, Università di Siena, Siena, Italy
| | - G. Gualtieri
- Dipartimento Scienze Mediche Chirurgiche e Neuroscienze, Università di Siena, Siena, Italy
| | - R. Gusinu
- Dipartimento Scienze Mediche Chirurgiche e Neuroscienze, Università di Siena, Siena, Italy
| | - A. Coluccia
- Dipartimento Scienze Mediche Chirurgiche e Neuroscienze, Università di Siena, Siena, Italy
| | - Marco Mandalà
- Otolaryngology Department, Azienda Ospedaliera Universitaria Senese, Siena, Italy
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27
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Lasitha P, Dasgupta S, Naresh Patwari G. Unraveling the Origin of Differentiable 'Turn-On' Fluorescence Sensing of Zn 2+ and Cd 2+ Ions with Squaramides. Chemphyschem 2020; 21:1564-1570. [PMID: 32488932 DOI: 10.1002/cphc.202000332] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/01/2020] [Indexed: 11/09/2022]
Abstract
A squaramide ring conjugated with Schiff-bases decorated with hydroxy and methoxy functional groups differentially senses zinc and cadmium ions, which turn on the fluorescence. The feebly emitting free ligands light up in the presence of zinc and cadmium acetates, with the acetate ion playing a pivotal role as a conjugate anion. The selective and differentiable emission responses for zinc and cadmium ions make these ligands efficient multi-analyte sensing agents. Furthermore, these ligands could be used to differentially sense zinc and cadmium ions even in aqueous environments. The NMR investigations reveal marginal differences in the binding of zinc and cadmium ions to the ligands, whereas density functional theory calculations suggest the different extent of ligand-to-metal charge transfer (LMCT) contributes to the differential behavior. Finally, comparison of the excited-state dynamics of free ligand and the metal complexes reveal the appearance of longer lifetime (about 500-700 ps) component with complexation, due to rigidified molecular skeleton, thereby impeding the non-radiative processes.
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Affiliation(s)
- P Lasitha
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - S Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
| | - G Naresh Patwari
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai, 400076, India
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28
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Das A, Roy B, Bandyopadhyay D, Dasgupta S, Chakraborty S, Soudant C, Gulati M, Ray KK, Lavie CJ. Non-statin interventions in the prevention of cardiovascular events: Sex-based meta-analysis. Prog Cardiovasc Dis 2020; 63:228-232. [PMID: 32224114 DOI: 10.1016/j.pcad.2020.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To explore the sex-specific association of non-statin classes of drugs in reducing cardiovascular outcomes. METHODS Published data search up to November 2019 reporting primary outcomes that approximate with major vascular events (MVEs) after treatment with non-statin group of drugs was performed. The primary outcome was the sex-specific association with MVEs. Random-effects meta-analysis was performed to estimate relative risk (RR) of the individual classes of therapies. RESULTS Seven Randomized Clinical Trials (RCTs) including 122,164 patients were included in our analysis. Four studies compared the Triglyceride (TG)-lowering group of drugs with placebo and 3 studies compared low-density lipoprotein cholesterol (LDL-c) lowering drugs with placebo. Overall, with non-statin drugs, there was no difference in the risk reduction of cardiovascular (CV) events between men (RR 0.86; 95% CI 0.79-0.94, p-value <0.001) and women (RR 0.88; 95% CI 0.83-0.93, p-value 0.91). However, TG targeting interventions showed no cardiovascular outcome benefits in men (RR 0.85; 95% CI 0.71-1.02, p-value <0.001) while no significant benefit was seen in women (RR 0.87; 95% CI 0.77-0.98, p value = 0.85). No such difference existed in non-statin LDL-c lowering group of drugs in between men (RR 0.88; 95% CI 0.81-0.94, p value = 0.18) and women (RR 0.88; 95% CI 0.82-0.94, p value = 0.46). However, lowering of TG was only associated with a higher risk reduction of CV events (RR 0.86; 95% CI 0.77-0.95, p value = 0.03) in the entire study population. CONCLUSION Non-statin group of drugs was effective in reducing adverse CV outcomes for both sexes. Lowering TG was associated with higher risk reduction in CV events in general.
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Affiliation(s)
- Avash Das
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA..
| | - Bhaskar Roy
- Department of Neurology, Division of Neuromuscular Medicine, Yale School of Medicine, New Haven, CT, USA
| | | | - Subhajit Dasgupta
- Department of Cardiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | | | - Celine Soudant
- Gustave L. and Janet W. Levy Library, Mount Sinai Health System, One Gustave L. Levy Place, New York, NY, USA
| | - Martha Gulati
- Division of Cardiology, University of Arizona, Phoenix, AZ, USA
| | - Kausik K Ray
- Imperial Centre for Cardiovascular Disease Prevention, Department of Primary Care and Public Health, Imperial College London, London, UK
| | - Carl J Lavie
- Cardiac Rehabilitation and Preventive Cardiology, John Ochsner Heart and Vascular Institute, Ochsner Clinical School - The University of Queensland School of Medicine, New Orleans, LA, USA
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29
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Dasgupta S, Gomez JJ, Singh I, Khan M. S-Nitrosylation in Regulation of Inflammation and Cell Damage. Curr Drug Targets 2019; 19:1831-1838. [PMID: 29437005 DOI: 10.2174/1389450119666180213094747] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 01/06/2018] [Accepted: 02/07/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cell signaling through nitric oxide (NO) is a multifaceted mechanism, which regulates metabolic activities and fate in different tissues. The peroxynitrite (ONOO-) formed as reaction product of nitric oxide radical and superoxide interacts with cell membrane phospholipids and proteins causing damage. OBJECTIVE The reaction kinetics to form nitrotyrosine (ONOO-tyrosine) and/or nitrosylated cysteine (ONOO-cysteine) in protein molecules during posttranslational modification and nitration of lipids are therefore critical in determining cells' signaling mechanism for survival or apoptosis. RESULTS The nitrosylation was found to modulate GPCRs and activation of guanylate cyclase as well as regulate NF-κB activation. The recent findings have shown the neuroprotective effects of S- nitrosylation, though mechanism is unclear. CONCLUSION While keeping the background in mind, we address here the biological function of NO derivatives in medicine. We target four known compounds: SNAP, SIN- 1 chloride, SNP and GSNO to understand the effect of NO in different tissues. Here we analyze the existing findings to assess therapeutic relevance of NO-signaling during inflammation, vasodilation and tolerance.
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Affiliation(s)
- Subhajit Dasgupta
- Medical University of South Carolina, Charleston, SC 29425, United States.,Department of Physical Sciences, Chemistry, Trident Technical College, Charleston, South Carolina, United States
| | | | - Inderjit Singh
- Medical University of South Carolina, Charleston, SC 29425, United States
| | - Mushfiquddin Khan
- Medical University of South Carolina, Charleston, SC 29425, United States
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Amin Mughal S, Bryson P, Brady D, Dasgupta S. Improving patient care by designing and implementing an electronic handover system. Clin Oncol (R Coll Radiol) 2019. [DOI: 10.1016/j.clon.2019.09.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Dasgupta S, Ewing-Graham PC, Groenendijk FH, Stam O, Biermann KE, Doukas M, Dubbink HJ, van Velthuysen MF, Dinjens WNM, Van Bockstal MR. Granular dot-like staining with MLH1 immunohistochemistry is a clone-dependent artefact. Pathol Res Pract 2019; 216:152581. [PMID: 31402167 DOI: 10.1016/j.prp.2019.152581] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/25/2019] [Accepted: 08/03/2019] [Indexed: 11/15/2022]
Abstract
Immunohistochemistry (IHC) for DNA mismatch repair proteins MLH1, PMS2, MSH2, and MSH6 is used for microsatellite instability (MSI) screening in colorectal carcinoma (CRC) and endometrial carcinoma (EC). Loss of PMS2, with retained MLH1 staining occurs in germline mutations of PMS2 gene, and is an indication for genetic testing. We report a pitfall of immunohistochemical interpretation in an EC, initially regarded as MLH1-positive and PMS2-negative. Review of the MLH1-IHC (M1-clone) revealed a granular, dot-like, nuclear staining. On repeating the MLH1-IHC with a different clone (ES05-clone), complete negativity was noted, and on molecular testing, MLH1 promotor methylation was detected. The dot-like pattern was therefore adjudged a clone-dependent artefact. On reviewing the archived MLH1-IHC slides, we observed the same dot-like pattern in two CRCs; in both cases the M1-clone had been used. Awareness of this artefact may prevent reporting errors, and unnecessary referrals for germline mutation testing.
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Affiliation(s)
- S Dasgupta
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - P C Ewing-Graham
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - F H Groenendijk
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - O Stam
- Department of Pathology, Pathan BV, Sint Franciscus Gasthuis, Rotterdam, the Netherlands.
| | - K E Biermann
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - M Doukas
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - H J Dubbink
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - M F van Velthuysen
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - W N M Dinjens
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands.
| | - M R Van Bockstal
- Department of Pathology, Erasmus MC, University Medical Centre Rotterdam, the Netherlands; Department of Pathology, University Clinics Saint-Luc, Brussels, Belgium.
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32
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Peng X, Dasgupta S, Zhong G, Du M, Xu H, Chen M, Chen S, Ta K, Li J. Large debris dumps in the northern South China Sea. Mar Pollut Bull 2019; 142:164-168. [PMID: 31232290 DOI: 10.1016/j.marpolbul.2019.03.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/13/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Knowledge of the abundance, source, and fate of marine debris in the deep sea is largely constrained thus far. Here, we report the existence of large deep-sea debris dumps that have not been reported before on the seafloor worldwide. Marine debris remarkably accumulated at ~1700-1800 m in the tributary submarine canyons of the Xisha Trough, northern South China Sea (SCS). Although marine debris in Xisha Trough is patchy, the debris abundance was as high as 36,818 and 51,929 items/km2 at locations SY78 and SY82, respectively, which is one order of magnitude higher than that in other submarine canyons. We propose that most of the debris came from fishery and navigation activities, as indicated by the categories of debris collected from the seafloor dumps. Seasonal surface ocean currents of the SCS and geomorphology of submarine canyons possibly influence the movement of the debris from coasts to the deep seafloor.
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Affiliation(s)
- X Peng
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - S Dasgupta
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China.
| | - G Zhong
- State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
| | - M Du
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - H Xu
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - M Chen
- Institute of Marine Geology and Resources, Ocean College, Zhejiang University, Zhoushan 316021, China; Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - S Chen
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - K Ta
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
| | - J Li
- Deep Sea Science Division, Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, Hainan 572000, China
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33
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Ragin C, Banydeen R, Zhang C, Ben A, Calabrese V, Villa NN, Reville J, Dasgupta S, Bandyopadhyay M, Louden D, Dasgupta S. Breast Cancer Research in the Caribbean: Analysis of Reports From 1975 to 2017. J Glob Oncol 2019; 4:1-21. [PMID: 30481085 PMCID: PMC6818300 DOI: 10.1200/jgo.18.00044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Purpose Breast cancer is among the leading causes of death resulting from cancer in
Caribbean women. Studies examining exogenous and genetically predetermined
endogenous risk factors are critical to define breast cancer susceptibility
in Caribbean women. The purpose of this systematic review is to assess the
existing scientific literature in the last 42 years (1975 to 2017) to
describe the body of research generated for the population of this region
and determine future research directions. Methods We selected published research articles using a combination of definite
keyword searches in PubMed. Only articles presenting the Caribbean
population as the focus of their research objectives were included in this
analysis. Results Studies on breast cancer in the Caribbean are limited. A majority of
publications on Caribbean populations were descriptive, focusing on cancer
trends and clinicopathologic factors. High incidence and mortality rates for
breast cancer are reported for the region, and there seem to be some
differences between countries in the frequency of cases according to age at
presentation. A limited number of epidemiologic, behavioral, and genetic and
molecular studies were conducted in more recent years. Conclusion A regional strategy for cancer registration is needed for the Caribbean to
address possible underestimates of breast cancer incidence. Furthermore,
behavioral, molecular, genetic, and epidemiologic investigations of breast
cancer are critical to address the concerns related to currently described
high incidence and mortality rates in the Caribbean.
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Affiliation(s)
- Camille Ragin
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Rishika Banydeen
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Christine Zhang
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Athena Ben
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Victoria Calabrese
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Nina N Villa
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Jade Reville
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Shaoni Dasgupta
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Mausumi Bandyopadhyay
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Delroy Louden
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
| | - Subhajit Dasgupta
- Camille Ragin, Fox Chase Cancer Center, Temple Health; Camille Ragin, African Caribbean Cancer Consortium, Philadelphia, PA; Rishika Banydeen, Centre Hospitalier Universitaire de Martinique; Rishika Banydeen, African Caribbean Cancer Consortium, Fort-de-France, Martinique; Christine Zhang, Athena Ben, Victoria Calabrese, Nina N. Villa, Jade Reville, and Subhajit Dasgupta, Saint James School of Medicine; Subhajit Dasgupta, African Caribbean Cancer Consortium, The Quarter; Delroy Louden, Anguilla Community College, George Hill, Anguilla; Shaoni Dasgupta, Academic Magnet High School; and Mausumi Bandyopadhyay, Trident Technical College, Charleston, SC
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Dasgupta S, Anand V, John H, Sawant Dessai A, Katsuta E, Takabe K, O'Malley B. Abstract P5-05-01: Metabolic enzyme PFKFB4 activates transcriptional coactivator SRC-3 to drive aggressive metastatic breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-05-01] [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: 11/16/2022]
Abstract
Abstract
Background: Metabolic rewiring is one of the central hallmarks of cancer progression and survival to support anabolic and energetic demands. Tumor cells constantly alter their metabolic state in response to oncogenic stimuli, nutrient availability, and interaction with immune cells however the precise regulation that precedes the metabolic alteration is poorly understood. Here we report a direct interaction of glycolytic enzyme PFKFB4 with transcriptional coregulator SRC-3. PFKFB4 functions as a critical regulator of Warburg effect and our study reveals that upon glucose stimulation PFKFB4 activates SRC-3 driving an invasive-metastatic breast cancer.
Methods: Molecular experiments were performed to understand the transcriptional activation of SRC-3 by PFKFB4 enzyme. Chromatin immunoprecipitation and gene expression studies were performed to investigate the functions of PFKFB4/SRC-3 crosstalk on transcriptional regulation. Metabolomics and isotope tracing studies were performed to identify the metabolic adaptations regulated by PFKFB4/SRC-3 in breast tumors. PFKFB4-knockout was established using CRISPR-Cas9 system and functional studies were carried out to define its role in tumor cell proliferation, invasion-migration, and breast to lung metastasis. Human breast tumor samples were evaluated to identify the clinical importance of PFKFB4/SRC-3 crosstalk in patients.
Results:Molecular studies revealed that PFKFB4 enzyme phosphorylates SRC-3 at serine 857 (S857) enhancing its transcriptional activity, whereas either suppression of PFKFB4 or ectopic expression of a phosphorylation-deficient SRC-3 mutant S857A (SRC-3S857A) significantly abolished SRC-3-mediated transcriptional output (p<0.000001). Functionally, PFKFB4-driven SRC-3 activation drives glucose flux towards the pentose phosphate pathway enabling purine synthesis by transcriptionally upregulating the expression of enzyme transketolase (TKT). Deletion of PFKFB4 by CRISPR-Cas9 system resulted in significantly reduced proliferation (p<0.05) and migration-invasion (p<0.001) compared to wildtype breast tumor cells. Ablation of SRC-3 or PFKFB4 suppressed in vivo breast tumor growth and prevents metastasis to the lung from an orthotopic setting (p<0.0001). PFKFB4 and phosphorylated SRC-3 levels are significantly increased in breast tumors (p=0.02), whereas, in patients with the basal subtype, PFKFB4 and SRC-3 drive a common protein signature that correlates with the poor survival of TNBC patients (p=0.03).
Conclusion:Our data suggest that the Warburg pathway enzyme PFKFB4 acts as a molecular fulcrum that couples sugar metabolism to transcriptional activation by stimulating SRC-3 to promote aggressive metastatic tumors. It also provides first evidence how Warburg pathway drives aggressive breast tumorigenesis by directly activating powerful oncogene SRC-3. Our work suggests that targeting the PFKFB4–SRC-3 axis may be therapeutically valuable in breast tumors that are notably dependent on glucose metabolism.
(This work is funded by grants from Susan G. Komen and NCI to S.D.)
Citation Format: Dasgupta S, Anand V, John H, Sawant Dessai A, Katsuta E, Takabe K, O'Malley B. Metabolic enzyme PFKFB4 activates transcriptional coactivator SRC-3 to drive aggressive metastatic breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-05-01.
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Affiliation(s)
- S Dasgupta
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - V Anand
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - H John
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - A Sawant Dessai
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - E Katsuta
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - K Takabe
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
| | - B O'Malley
- Roswell Park Comprehensive Cancer Center, Buffalo, NY; Baylor College of Medicine, Houston, TX
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Katsuta E, Anand V, Yan L, Dasgupta S, Takabe K. Abstract P2-02-04: CD73 expression regulated by estrogen signaling associates with poor prognosis in estrogen receptor (ER)-positive breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-02-04] [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: 11/16/2022]
Abstract
Abstract
Introduction: CD73, a cell surface enzyme, catalyzes the generation of adenosine from ATP and ADP in the tumor microenvironment along with CD39. Accumulated extracellular adenosine functions as immune-suppressor, and also binds to adenosine receptors which promotes angiogenesis and cell proliferation that results in accelerate cancer progression. However, the clinical significance and molecular function of CD73 expression in breast cancer remains unclear.
Methods: Utilizing publicly available breast cancer cohorts of The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO), clinical significance as well as underlying mechanisms were investigated. Molecular experiments were carried out in MCF7 cells, ER-positive breast cancer cell line, to investigate the role of estrogen signaling on CD73/CD39 expression.
Results: In treatment naïve TCGA cohort, CD73 expression level was significantly lower in ER-positive breast cancers compared to ER-negative tumors. Higher CD73 expression was associated with worse overall survival in whole cohort (p=0.021) and ER-positive tumors (p=0.003), but not in ER-negative tumors. Gene Set Enrichment Analysis revealed that estrogen response gene sets (Early; NES=-1.57, p=0.043, Late; NES=-1.61, p=0.021) were significantly enriched in CD73 low expressing ER-positive tumors, suggesting estrogen signaling may repress CD73 expression. To test this hypothesis, we analyzed the expression of CD73 and CD39 in MCF7 cells treated with estrogen, tamoxifen or both. Our data revealed that estrogen treatment suppressed CD73 and CD39 expression, whereas tamoxifen treatment enhanced expression of the genes. These findings suggest that CD73 and CD39 gene expression is suppressed by estrogen signaling, whereas binding of ER antagonists such as tamoxifen can remove the repressive effect on gene expression. On the other hand, epithelial-mesenchymal transition (EMT) (Normalized Enrichment Score; NES=2.41, p<0.001) and angiogenesis (NES=2.33, p<0.001) gene sets were significantly enriched in CD73 high expressing ER-positive tumors. CIBERSORT, which is an algorithm to estimate infiltrating immune cells by gene expression, demonstrated that CD73 high expressing ER-positive tumors have less infiltrating CD8-positive T cells, memory B cells and plasma cells, implying that CD73 high expressing tumors have immune suppressive environment, which is in agreement with the notion that CD73 high tumors are immunosuppressive. Finally, we found that CD73 expression was significantly elevated post-chemotherapy compared to tumors prior to the treatment (p=0.007), and CD73 high expression patients showed worse relapse-free survival in neoadjuvant chemotherapy patients cohort (p=0.003).
Conclusion: Molecular studies revealed that CD73 expression is regulated by estrogen signaling. Increased expression of CD73 significantly correlates with worse outcomes in ER-positive breast cancer patients. This may be due to upregulated pro-metastatic gene signatures such as EMT and angiogenesis as well as less infiltration of anti-cancer immune cells by adenosine generated by CD73 in the tumor microenvironment. Our data reveals an intriguing mechanism which may be responsible for recurrence and metastasis of ER-positive breast cancer.
Citation Format: Katsuta E, Anand V, Yan L, Dasgupta S, Takabe K. CD73 expression regulated by estrogen signaling associates with poor prognosis in estrogen receptor (ER)-positive breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-02-04.
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Affiliation(s)
- E Katsuta
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - V Anand
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - L Yan
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - S Dasgupta
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - K Takabe
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
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Scheie A, Dasgupta S, Sanders M, Sakai A, Matsumoto Y, Prisk TR, Nakatsuji S, Cava RJ, Broholm C. Homogeneous reduced moment in a gapful scalar chiral kagome antiferromagnet. Phys Rev B 2019; 100:10.1103/physrevb.100.024414. [PMID: 38617197 PMCID: PMC11015473 DOI: 10.1103/physrevb.100.024414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
We present a quantitative experimental investigation of the scalar chiral magnetic order with in Nd3Sb3Mg2O14. Static magnetization reveals a net ferromagnetic ground state, and inelastic neutron scattering from the hyperfine coupled nuclear spin reveals a local ordered moment of 1.76(6) μ B , just 61(2)% of the saturated moment size. The experiments exclude static disorder as the source of the reduced moment. A 38(1) μ eV gap in the magnetic excitation spectrum inferred from heat capacity rules out thermal fluctuations and suggests a multipolar explanation for the moment reduction. We compare Nd3Sb3Mg2O14 to Nd pyrochlores and show that Nd2Zr2O7 is in a spin fragmented state using nuclear Schottky heat capacity.
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Affiliation(s)
- A Scheie
- Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218
| | - S Dasgupta
- Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218
| | - M Sanders
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - A Sakai
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Matsumoto
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - T R Prisk
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
| | - S Nakatsuji
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R J Cava
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - C Broholm
- Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218
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Apoorva A, Dasgupta S, Padmavati M. Stem extract of Basella alba with potential anticancer and antiangiogenic activity. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dasgupta S, Sanyal S, Sengupta SP. Transpectoral Anterior Approach to the Axilla for Lymph Node Dissection in Association with Mastectomy Preserving Both Pectoral Muscles and Their Neurovascular Bundles. Tumori 2018; 85:498-502. [PMID: 10774573 DOI: 10.1177/030089169908500614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In Patey's mastectomy, which is still the most common operation for breast cancer, axillary node dissection (AND) is performed through the base of the axilla after retracting the pectoralis major muscle and excising the pectoralis minor muscle (some surgeons preserve the latter). This has the disadvantage of inadequate exposure of the axilla and the risk of damage to the neurovascular bundles supplying the pectoral muscles, which in the long run may lead to atrophy of these muscles. A transpectoral anterior approach to the axilla for AND in association with mastectomy was attempted in 115 cases to obviate the above-mentioned disadvantages. The approach included: 1) splitting of the pectoralis major between the clavicular and sternal fibers; 2) mobilization and swinging of the pectoralis minor into different directions by means of a sling to facilitate AND at selected levels. The major advantages of this approach were: 1) total preservation of both pectoral muscles with their neurovascular bundles maintained the normal anatomy and function of the shoulder; 2) the axilla was directly approached through the anterior wall instead of through the base; in this way the axillary contents were exposed almost at surface level; 3) the dissection plane could be limited to anterior to and below the axillary vein and the risk of postoperative lymphedema could thus be minimized; 4) change of position of the ipsilateral arm was not necessary; 5) the duration of surgery was reduced. Monoblock ablation of significant and suspected tissues, maintaining the normal anatomy and function of the shoulder, could be easily accomplished with this approach.
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Affiliation(s)
- S Dasgupta
- Department of Surgery, Medical College, Calcutta, India
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Khan D, Sarikhani M, Dasgupta S, Maniyadath B, Pandit AS, Mishra S, Ahamed F, Dubey A, Fathma N, Atreya HS, Kolthur-Seetharam U, Sundaresan NR. SIRT6 deacetylase transcriptionally regulates glucose metabolism in heart. J Cell Physiol 2018; 233:5478-5489. [PMID: 29319170 DOI: 10.1002/jcp.26434] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/05/2018] [Indexed: 01/31/2023]
Abstract
Sirtuins are a family of enzymes, which govern a number of cellular processes essential for maintaining physiological balance. SIRT6, a nuclear sirtuin, is implicated in the development of metabolic disorders. The role of SIRT6 in regulation of cardiac metabolism is unexplored. Although glucose is not the primary energy source of heart, defects in glucose oxidation have been linked to heart failure. SIRT6+/- mice hearts exhibit increased inhibitory phosphorylation of PDH subunit E1α. SIRT6 deficiency enhances FoxO1 nuclear localization that results in increased expression of PDK4. We show that SIRT6 transcriptionally regulates the expression of PDK4 by binding to its promoter. SIRT6+/- hearts show accumulation of lactate, indicating compromised mitochondrial oxidation. SIRT6 deficiency results in decreased oxygen consumption rate and concomitantly lesser ATP production. Mechanistically, SIRT6 deficiency leads to increased FoxO1-mediated transcription of PDK4. Our findings establish a novel link between SIRT6 and cardiac metabolism, suggesting a protective role of SIRT6 in maintaining cardiac homeostasis.
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Affiliation(s)
- Danish Khan
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Mohsen Sarikhani
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Subhajit Dasgupta
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | | | - Anwit S Pandit
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Sneha Mishra
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Faiz Ahamed
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Abhinav Dubey
- NMR Research Centre, Indian Institute of Science, Bengaluru, India
| | - Nowrin Fathma
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | | | | | - Nagalingam R Sundaresan
- Cardiovascular and Muscle Research Laboratory, Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
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Alexeev M, Birsa R, Bradamante F, Bressan A, Chiosso M, Ciliberti P, Dalla Torre S, Dasgupta S, Denisov O, Finger M, Finger M, Fishcher H, Gobbo B, Gregori M, Hamar G, Herrmann F, Königsmann K, Levorato S, Maggiora A, Makke N, Martin A, Menon G, Novy J, Panzieri D, Pereira FA, Santos CA, Sbrizzai G, Schiavon P, Schopferer S, Slunechka M, Steiger K, Steiger L, Sulc M, Tessarotto F, Veloso JFCA. Status of COMPASS RICH-1 Upgrade with MPGD-based Photon Detectors. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201817401004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A Set of new MPGD-based Photon Detectors is being built for the upgrade of COMPASS RICH-1. The detectors cover a total active area of 1.4 m2 and are based on a hybrid architecture consisting of two THGEM layers and a Micromegas. A CsI film on one THGEM acts as a reflective photocathode. The characteristics of the detector, the production of the components and their validation tests are described in detail.
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Dasgupta S, Dasgupta S. Therapeutic Interventions of Tissue Specific Autoimmune Onset in Systemic Lupus Erythematosus. Mini Rev Med Chem 2017; 17:1418-1424. [PMID: 27290913 DOI: 10.2174/1389557516666160611020838] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 02/18/2016] [Accepted: 06/09/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Systemic lupus erythematosus (lupus) is a female predominant autoimmune disease. The autoreactive B cells and T helper cells together are known to develop adverse immune responses in different tissues like kidney, bone, cardiovascular and central nervous system. Progression of disease is associated with deposition of immune complex which initiates tissue damage. The therapy for lupus still includes corticosteroids to reduce allergic manifestations and inflammatory immune responses. Recent observations suggested that, mycophenolate mofetil and cyclophosphamide treatment in combination with corticosteroids have benefit in lupus therapy. METHOD The prospect of B cell depletion by CD20 targeted monoclonal antibody Rituximab has been demonstrated in lupus patients. The CD52 specific monoclonal antibody Alemtuzumab is another proposition for lupus therapy. The drug Belimumab inhibits B cell activation by altering BAFF/APRIL signal cascade. Recent discovery of the CD22 targeted Epratuzumab also shows therapeutic prospect. The researches on new generation drugs for autoimmune lupus include search for inhibitors of CD40- CD40Ligand interactions, CD86 activation, selective modulation of complement cascades. The choice of inhibitors of transcription factor NF-κBp65 and selective modulators for estrogen receptor alpha are proposed areas of lupus drug discovery research. RESULTS & CONCLUSION Keeping a close eye on the mechanisms of disease onset, a comprehensive view is provided on recent therapy of systemic lupus erythematosus.
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Affiliation(s)
- Subhajit Dasgupta
- Microbiology, Immunology and Biochemistry, Albert Lake Drive, The Quarter, A-I-2640, P.O. Box 318; Anguilla. United Kingdom
| | - Shaoni Dasgupta
- Academic Magnet High School, Charleston, South Carolina. United States
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Banerjee T, Das A, Ghosh E, Saha M, Dasgupta S, Chowdhury D, Ojha S, Nandi S, Haldar A, Datta A, Purakayastha S. Clinical profile and outcome of optic neuritis in the City of Kolkata, India. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dasgupta S, Auth T, Gompper G. Nano- and microparticles at fluid and biological interfaces. J Phys Condens Matter 2017; 29:373003. [PMID: 28608781 PMCID: PMC7104866 DOI: 10.1088/1361-648x/aa7933] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/12/2017] [Accepted: 06/13/2017] [Indexed: 05/05/2023]
Abstract
Systems with interfaces are abundant in both technological applications and biology. While a fluid interface separates two fluids, membranes separate the inside of vesicles from the outside, the interior of biological cells from the environment, and compartmentalize cells into organelles. The physical properties of interfaces are characterized by interface tension, those of membranes are characterized by bending and stretching elasticity. Amphiphilic molecules like surfactants that are added to a system with two immiscible fluids decrease the interface tension and induce a bending rigidity. Lipid bilayer membranes of vesicles can be stretched or compressed by osmotic pressure; in biological cells, also the presence of a cytoskeleton can induce membrane tension. If the thickness of the interface or the membrane is small compared with its lateral extension, both can be described using two-dimensional mathematical surfaces embedded in three-dimensional space. We review recent work on the interaction of particles with interfaces and membranes. This can be micrometer-sized particles at interfaces that stabilise emulsions or form colloidosomes, as well as typically nanometer-sized particles at membranes, such as viruses, parasites, and engineered drug delivery systems. In both cases, we first discuss the interaction of single particles with interfaces and membranes, e.g. particles in external fields, non-spherical particles, and particles at curved interfaces, followed by interface-mediated interaction between two particles, many-particle interactions, interface and membrane curvature-induced phenomena, and applications.
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Affiliation(s)
- S Dasgupta
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Singapore
- Institut Curie, CNRS, UMR 168, 75005 Paris, France
- Present address: Department of Physics, University of Toronto, Toronto, Ontario M5S1A7, Canada
| | - T Auth
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - G Gompper
- Theoretical Soft Matter and Biophysics, Institute of Complex Systems and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
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Aghasyan M, Akhunzyanov R, Alexeev GD, Alexeev MG, Amoroso A, Andrieux V, Anfimov NV, Anosov V, Antoshkin A, Augsten K, Augustyniak W, Austregesilo A, Azevedo CDR, Badełek B, Balestra F, Ball M, Barth J, Beck R, Bedfer Y, Bernhard J, Bicker K, Bielert ER, Birsa R, Bodlak M, Bordalo P, Bradamante F, Bressan A, Büchele M, Chang WC, Chatterjee C, Chiosso M, Choi I, Chung SU, Cicuttin A, Crespo ML, Dalla Torre S, Dasgupta SS, Dasgupta S, Denisov OY, Dhara L, Donskov SV, Doshita N, Dreisbach C, Dünnweber W, Dziewiecki M, Efremov A, Eversheim PD, Faessler M, Ferrero A, Finger M, Finger M, Fischer H, Franco C, du Fresne von Hohenesche N, Friedrich JM, Frolov V, Fuchey E, Gautheron F, Gavrichtchouk OP, Gerassimov S, Giarra J, Giordano F, Gnesi I, Gorzellik M, Grasso A, Grosse Perdekamp M, Grube B, Grussenmeyer T, Guskov A, Hahne D, Hamar G, von Harrach D, Heinsius FH, Heitz R, Herrmann F, Horikawa N, d'Hose N, Hsieh CY, Huber S, Ishimoto S, Ivanov A, Ivanshin Y, Iwata T, Jary V, Joosten R, Jörg P, Kabuß E, Kerbizi A, Ketzer B, Khaustov GV, Khokhlov YA, Kisselev Y, Klein F, Koivuniemi JH, Kolosov VN, Kondo K, Königsmann K, Konorov I, Konstantinov VF, Kotzinian AM, Kouznetsov OM, Kral Z, Krämer M, Kremser P, Krinner F, Kroumchtein ZV, Kulinich Y, Kunne F, Kurek K, Kurjata RP, Kveton A, Lednev AA, Levillain M, Levorato S, Lian YS, Lichtenstadt J, Longo R, Maggiora A, Magnon A, Makins N, Makke N, Mallot GK, Marianski B, Martin A, Marzec J, Matoušek J, Matsuda H, Matsuda T, Meshcheryakov GV, Meyer M, Meyer W, Mikhailov YV, Mikhasenko M, Mitrofanov E, Mitrofanov N, Miyachi Y, Nagaytsev A, Nerling F, Neyret D, Nový J, Nowak WD, Nukazuka G, Nunes AS, Olshevsky AG, Orlov I, Ostrick M, Panzieri D, Parsamyan B, Paul S, Peng JC, Pereira F, Pešek M, Peshekhonov DV, Pierre N, Platchkov S, Pochodzalla J, Polyakov VA, Pretz J, Quaresma M, Quintans C, Ramos S, Regali C, Reicherz G, Riedl C, Rogacheva NS, Roskot M, Ryabchikov DI, Rybnikov A, Rychter A, Salac R, Samoylenko VD, Sandacz A, Santos C, Sarkar S, Savin IA, Sawada T, Sbrizzai G, Schiavon P, Schmidt K, Schmieden H, Schönning K, Seder E, Selyunin A, Shevchenko OY, Silva L, Sinha L, Sirtl S, Slunecka M, Smolik J, Srnka A, Steffen D, Stolarski M, Subrt O, Sulc M, Suzuki H, Szabelski A, Szameitat T, Sznajder P, Takewaka S, Tasevsky M, Tessaro S, Terça G, Tessarotto F, Thiel A, Tomsa J, Tosello F, Tskhay V, Uhl S, Vauth A, Veloso J, Virius M, Vit M, Vondra J, Wallner S, Weisrock T, Wilfert M, Ter Wolbeek J, Zaremba K, Zavada P, Zavertyaev M, Zemlyanichkina E, Zhuravlev N, Ziembicki M. First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process. Phys Rev Lett 2017; 119:112002. [PMID: 28949229 DOI: 10.1103/physrevlett.119.112002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Indexed: 06/07/2023]
Abstract
The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/c π^{-} beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving access to different transverse-momentum-dependent (TMD) parton distribution functions (PDFs) are extracted using dimuon events with invariant mass between 4.3 GeV/c^{2} and 8.5 GeV/c^{2}. Within the experimental uncertainties, the observed sign of the Sivers asymmetry is found to be consistent with the fundamental prediction of quantum chromodynamics (QCD) that the Sivers TMD PDFs extracted from DY have a sign opposite to the one extracted from semi-inclusive deep-inelastic scattering (SIDIS) data. We present two other asymmetries originating from the pion Boer-Mulders TMD PDFs convoluted with either the nucleon transversity or pretzelosity TMD PDFs. A recent COMPASS SIDIS measurement was obtained at a hard scale comparable to that of these DY results. This opens the way for possible tests of fundamental QCD universality predictions.
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Affiliation(s)
- M Aghasyan
- Trieste Section of INFN, 34127 Trieste, Italy
| | - R Akhunzyanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - G D Alexeev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M G Alexeev
- University of Turin, Department of Physics, 10125 Turin, Italy
| | - A Amoroso
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - V Andrieux
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - N V Anfimov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - V Anosov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Antoshkin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - K Augsten
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - W Augustyniak
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - A Austregesilo
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - C D R Azevedo
- University of Aveiro, Department of Physics, 3810-193 Aveiro, Portugal
| | - B Badełek
- University of Warsaw, Faculty of Physics, 02-093 Warsaw, Poland
| | - F Balestra
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - M Ball
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - J Barth
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
| | - R Beck
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - Y Bedfer
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Bernhard
- CERN, 1211 Geneva 23, Switzerland
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - K Bicker
- CERN, 1211 Geneva 23, Switzerland
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | | | - R Birsa
- Trieste Section of INFN, 34127 Trieste, Italy
| | - M Bodlak
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | | | - F Bradamante
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - A Bressan
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - M Büchele
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - W-C Chang
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - C Chatterjee
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
| | - M Chiosso
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - I Choi
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - S-U Chung
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - A Cicuttin
- Trieste Section of INFN, 34127 Trieste, Italy
| | - M L Crespo
- Trieste Section of INFN, 34127 Trieste, Italy
| | | | - S S Dasgupta
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
| | - S Dasgupta
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | | | - L Dhara
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
| | - S V Donskov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - N Doshita
- Yamagata University, Yamagata 992-8510, Japan
| | - Ch Dreisbach
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - W Dünnweber
- University of Aveiro, Department of Physics, 3810-193 Aveiro, Portugal
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- Institute of Scientific Instruments, AS CR, 61264 Brno, Czech Republic
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- CERN, 1211 Geneva 23, Switzerland
- Technical University in Liberec, 46117 Liberec, Czech Republic
- LIP, 1000-149 Lisbon, Portugal
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- University of Miyazaki, Miyazaki 889-2192, Japan
- Lebedev Physical Institute, 119991 Moscow, Russia
- Technische Universität München, Physik Department , 85748 Garching, Germany
- Nagoya University, 464 Nagoya, Japan
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- Tel Aviv University, School of Physics and Astronomy, 69978 Tel Aviv, Israel
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- University of Warsaw, Faculty of Physics, 02-093 Warsaw, Poland
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- Yamagata University, Yamagata 992-8510, Japan
| | - M Dziewiecki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
| | - A Efremov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - P D Eversheim
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - M Faessler
- University of Aveiro, Department of Physics, 3810-193 Aveiro, Portugal
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- Institute of Scientific Instruments, AS CR, 61264 Brno, Czech Republic
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- CERN, 1211 Geneva 23, Switzerland
- Technical University in Liberec, 46117 Liberec, Czech Republic
- LIP, 1000-149 Lisbon, Portugal
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- University of Miyazaki, Miyazaki 889-2192, Japan
- Lebedev Physical Institute, 119991 Moscow, Russia
- Technische Universität München, Physik Department , 85748 Garching, Germany
- Nagoya University, 464 Nagoya, Japan
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- Tel Aviv University, School of Physics and Astronomy, 69978 Tel Aviv, Israel
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- University of Warsaw, Faculty of Physics, 02-093 Warsaw, Poland
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- Yamagata University, Yamagata 992-8510, Japan
| | - A Ferrero
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Finger
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | - M Finger
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | - H Fischer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | | | | | - J M Friedrich
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - V Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- CERN, 1211 Geneva 23, Switzerland
| | - E Fuchey
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - F Gautheron
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
| | - O P Gavrichtchouk
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Gerassimov
- Lebedev Physical Institute, 119991 Moscow, Russia
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - J Giarra
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - F Giordano
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - I Gnesi
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - M Gorzellik
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - A Grasso
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - M Grosse Perdekamp
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - B Grube
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - T Grussenmeyer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - A Guskov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - D Hahne
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
| | - G Hamar
- Trieste Section of INFN, 34127 Trieste, Italy
| | - D von Harrach
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - F H Heinsius
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - R Heitz
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - F Herrmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | | | - N d'Hose
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - C-Y Hsieh
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - S Huber
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - S Ishimoto
- Yamagata University, Yamagata 992-8510, Japan
| | - A Ivanov
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - Yu Ivanshin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - T Iwata
- Yamagata University, Yamagata 992-8510, Japan
| | - V Jary
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - R Joosten
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - P Jörg
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - E Kabuß
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - A Kerbizi
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - B Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - G V Khaustov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - Yu A Khokhlov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - Yu Kisselev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Klein
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
| | - J H Koivuniemi
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - V N Kolosov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - K Kondo
- Yamagata University, Yamagata 992-8510, Japan
| | - K Königsmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - I Konorov
- Lebedev Physical Institute, 119991 Moscow, Russia
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - V F Konstantinov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - A M Kotzinian
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - O M Kouznetsov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Z Kral
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - M Krämer
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - P Kremser
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - F Krinner
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - Z V Kroumchtein
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Kulinich
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - F Kunne
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - K Kurek
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - R P Kurjata
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
| | - A Kveton
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - A A Lednev
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - M Levillain
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Levorato
- Trieste Section of INFN, 34127 Trieste, Italy
| | - Y-S Lian
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - J Lichtenstadt
- Tel Aviv University, School of Physics and Astronomy, 69978 Tel Aviv, Israel
| | - R Longo
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - A Maggiora
- Torino Section of INFN, 10125 Turin, Italy
| | - A Magnon
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - N Makins
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - N Makke
- Trieste Section of INFN, 34127 Trieste, Italy
| | | | - B Marianski
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - A Martin
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - J Marzec
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
| | - J Matoušek
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - H Matsuda
- Yamagata University, Yamagata 992-8510, Japan
| | - T Matsuda
- University of Miyazaki, Miyazaki 889-2192, Japan
| | - G V Meshcheryakov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Meyer
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - W Meyer
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
| | - Yu V Mikhailov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - M Mikhasenko
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - E Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - N Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - Y Miyachi
- Yamagata University, Yamagata 992-8510, Japan
| | - A Nagaytsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - F Nerling
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - D Neyret
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Nový
- CERN, 1211 Geneva 23, Switzerland
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - W-D Nowak
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - G Nukazuka
- Yamagata University, Yamagata 992-8510, Japan
| | | | - A G Olshevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - I Orlov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Ostrick
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - D Panzieri
- Torino Section of INFN, 10125 Turin, Italy
| | - B Parsamyan
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - S Paul
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - J-C Peng
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - F Pereira
- University of Aveiro, Department of Physics, 3810-193 Aveiro, Portugal
| | - M Pešek
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | - D V Peshekhonov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - N Pierre
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Platchkov
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Pochodzalla
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - V A Polyakov
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - J Pretz
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
| | | | | | - S Ramos
- LIP, 1000-149 Lisbon, Portugal
| | - C Regali
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - G Reicherz
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
| | - C Riedl
- University of Illinois at Urbana-Champaign, Department of Physics, Urbana, Illinois 61801-3080, USA
| | - N S Rogacheva
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Roskot
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | - D I Ryabchikov
- Technische Universität München, Physik Department , 85748 Garching, Germany
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - A Rybnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Rychter
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
| | - R Salac
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - V D Samoylenko
- State Scientific Center Institute for High Energy Physics of National Research Center "Kurchatov Institute," 142281 Protvino, Russia
| | - A Sandacz
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - C Santos
- Trieste Section of INFN, 34127 Trieste, Italy
| | - S Sarkar
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
| | - I A Savin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - T Sawada
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
| | - G Sbrizzai
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - P Schiavon
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
| | - K Schmidt
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - H Schmieden
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
| | | | - E Seder
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Selyunin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - O Yu Shevchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - L Silva
- LIP, 1000-149 Lisbon, Portugal
| | - L Sinha
- Matrivani Institute of Experimental Research and Education, Calcutta 700 030, India
| | - S Sirtl
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - M Slunecka
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - J Smolik
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - A Srnka
- Institute of Scientific Instruments, AS CR, 61264 Brno, Czech Republic
| | - D Steffen
- CERN, 1211 Geneva 23, Switzerland
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | | | - O Subrt
- CERN, 1211 Geneva 23, Switzerland
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - M Sulc
- Technical University in Liberec, 46117 Liberec, Czech Republic
| | - H Suzuki
- Yamagata University, Yamagata 992-8510, Japan
| | - A Szabelski
- University of Trieste, Department of Physics, 34127 Trieste, Italy
- Trieste Section of INFN, 34127 Trieste, Italy
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - T Szameitat
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - P Sznajder
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
| | - S Takewaka
- University of Turin, Department of Physics, 10125 Turin, Italy
- Torino Section of INFN, 10125 Turin, Italy
| | - M Tasevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - S Tessaro
- Trieste Section of INFN, 34127 Trieste, Italy
| | - G Terça
- LIP, 1000-149 Lisbon, Portugal
| | | | - A Thiel
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
| | - J Tomsa
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
| | - F Tosello
- Torino Section of INFN, 10125 Turin, Italy
| | - V Tskhay
- Lebedev Physical Institute, 119991 Moscow, Russia
| | - S Uhl
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - A Vauth
- CERN, 1211 Geneva 23, Switzerland
| | - J Veloso
- University of Aveiro, Department of Physics, 3810-193 Aveiro, Portugal
| | - M Virius
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - M Vit
- University of Turin, Department of Physics, 10125 Turin, Italy
| | - J Vondra
- Czech Technical University in Prague, 16636 Prague, Czech Republic
| | - S Wallner
- Technische Universität München, Physik Department , 85748 Garching, Germany
| | - T Weisrock
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - M Wilfert
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
| | - J Ter Wolbeek
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
| | - K Zaremba
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
| | - P Zavada
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Zavertyaev
- Lebedev Physical Institute, 119991 Moscow, Russia
| | - E Zemlyanichkina
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - N Zhuravlev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
| | - M Ziembicki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
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Affiliation(s)
- Subhajit Dasgupta
- Saint James School of Medicine, Albert Lake Drive, The Quarter, A-I-2640 Anguilla, and, 1480 Renaissance Drive, Suite 300 Park Ridge, Chicago, IL 60068, United States
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Kannan A, Wells RM, Ikebe M, Dasgupta S. Abstract P6-01-15: Novel regulation of breast cancer cell aggressiveness by cancer testis antigen. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-01-15] [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: 11/16/2022]
Abstract
Abstract
We recently demonstrated that a vesicular endocytosis associated protein SH3GL2, attenuates spontaneous metastases of breast cancer cells by inducing a mesenchymal to epithelial differentiation and the onset of the intrinsic apoptotic pathway. The present study aims to understand the molecular mechanism behind the SH3Gl2 mediated reduction of spontaneous metastasis of the breast cancer cells.
We employed a cDNA microarray analysis of the SH3GL2-overexpressing breast cancer cells exhibiting reduced pulmonary metastasis and identified a 12.1 fold downregulation of SPANXB1, a cancer-testis antigen that regulates sperm motility. A limited number of studies reported an association between increased SPANXB1 expression and progression of melanoma and hepatocellular carcinoma. Augmented SPANXB1 mRNA and protein expression was evident in primary breast tumors and its upregulation was associated with pulmonary metastasis of breast cancer cells. However, the expression pattern of SPANXB1 and its role in BCa development and progression is unknown. By immunohistochemical analysis, we detected high expression (p=0.002) of SPANXB1 in 78% (18/23) of the primary breast cancer tissues and corresponding lymph node metastases compared to the matched normal breast tissues. A couple of non-tumorigenic human breast epithelial cell lines were stably transformed with SPANXB1 to understand its effect on cellular growth and progression. The SPANXB1-transformed cells exhibited increased invasion (p=0.0001) and epithelial to mesenchymal transition accompanied by an augmented expression ratio of Vimentin/E-Cadherin, molecules regulating differentiation and metastasis. The SPANXB1-transformed cells also exhibited a markedly reduced expression of SH3GL2, implicating a SPANXB1:SH3GL2 crosstalk accompanied by an enhanced production of lactate (p=0.004). Our investigation identifies new breast cancer promoting role of a cancer testis antigen, which bears potential for biomarker and targeted therapeutic development.
Citation Format: Kannan A, Wells RM, Ikebe M, Dasgupta S. Novel regulation of breast cancer cell aggressiveness by cancer testis antigen [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-01-15.
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Affiliation(s)
- A Kannan
- The University of Texas Health Science Center
| | - RM Wells
- The University of Texas Health Science Center
| | - M Ikebe
- The University of Texas Health Science Center
| | - S Dasgupta
- The University of Texas Health Science Center
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Bennardo M, Sanyaolu A, Dasgupta S. The Antimicrobial Effects of Secondary Metabolites of Anguillan Fungi. JAMB 2017; 3:1-10. [DOI: 10.9734/jamb/2017/34619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Singh S, Kumar S, Dasgupta S, Kenwar DB, Rathi M, Sharma A, Kohli HS, Jha V, Gupta KL, Minz M. A Single-center Experience of Kidney Transplantation from Donation after Circulatory Death: Challenges and Scope in India. Indian J Nephrol 2017; 27:205-209. [PMID: 28553041 PMCID: PMC5434687 DOI: 10.4103/0971-4065.202843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Donation after circulatory death (DCD) has never been attempted in India because of legal constraints and lack of guidelines for the withdrawal of life support in end-of-life situations. The present report describes the initial experience of transplantation of organs from DCD donors in a tertiary care center in India. Between 2011 and 2015, five donors had kidneys retrieved after cardiac arrest. These patients were declared dead after waiting for 5 min with no electrocardiographic signal on monitor following cardiopulmonary resuscitation (CPR), which was restarted in three patients till organ retrieval. All donors received heparin and underwent rapid cannulation of aorta, infusion of preservative cold solution, and immediate surface cooling of organs during retrieval surgery. 9/10 kidneys were utilized. Mean donor age was 29.6 ± 16.3 years, M:F 4:1 and mean age of recipients was 38.7 ± 10.8 years, M:F 7:2. Seven patients required dialysis in postoperative period. Mean postoperative day 0 urine output was 1.9 ± 2.6 L. Baseline creatinine achieved was 1.38 ± 0.35 mg/dl after a mean duration of 26.12 ± 15.4 days. Kidneys from donors where CPR was continued after the declaration of death (n = 3) had better recovery of renal function (time to reach baseline creatinine 21.2 ± 7.2 vs. 34.3 ± 23.7 days, baseline creatinine 1.36 ± 0.25 vs. 1.52 ± 0.45 mg%). In donors without CPR, one kidney never functioned and others had patchy cortical necrosis on protocol biopsy, which was not seen in the kidneys from donors with CPR. Kidneys from DCD donors can serve as a useful adjunct in deceased donor program. Continuing CPR after the declaration of death seems to help in improving outcomes.
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Affiliation(s)
- S Singh
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - S Kumar
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - S Dasgupta
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - D B Kenwar
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - M Rathi
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - A Sharma
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - H S Kohli
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - V Jha
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - K L Gupta
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - M Minz
- Department of Renal Transplant Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Dasgupta S, Dasgupta S. Antigen presentation for priming T cells in central system. Int J Biochem Cell Biol 2016; 82:41-48. [PMID: 27903432 DOI: 10.1016/j.biocel.2016.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/16/2016] [Accepted: 11/23/2016] [Indexed: 12/15/2022]
Abstract
Generation of myelin antigen-specific T cells is a major event in neuroimmune responses that causes demyelination. The antigen-priming of T cells and its location is important in chronic and acute inflammation. In autoimmune multiple sclerosis, the effector T cells are considered to generate in periphery. However, the reasons for chronic relapsing-remitting events are obscure. Considering mechanisms, a feasible aim of research is to investigate the role of antigen-primed T cells in lupus cerebritis. Last thirty years of investigations emphasize the relevance of microglia and infiltrated dendritic cells/macrophages as antigen presenting cells in the central nervous system. The recent approach towards circulating B-lymphocytes is an important area in the context. Here, we analyze the existing findings on antigen presentation in the central nervous system. The aim is to visualize signaling events of myelin antigen presentation to T cells and lead to the strategy of future goals on immunotherapy research.
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Affiliation(s)
| | - Subhajit Dasgupta
- Microbiology, Immunology and Biochemistry, Saint James School of Medicine, P.O. Box 318, Albert Lake Drive, The Quarter, AI-2640, British West Indies, Anguilla.
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