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Srinivasa V, Jayendiran S, Kayarkar D, Aliyar A, Aravind TI. Bilateral internal jugular vein ectasia: A rare cause of neck swelling. Natl Med J India 2023; 36:23-25. [PMID: 37615138 DOI: 10.25259/nmji_282_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Internal jugular vein ectasia or phlebectasia is a condition in which there is an isolated fusiform dilatation of the internal jugular vein. The patient usually presents with swelling in the neck, which aggravates in size while coughing or straining. This is a rare condition and is often mis-diagnosed. It can be diagnosed by proper history, clinical examination and imaging. We report a 5-year-old boy who had bilateral internal jugular vein ectasia aggravating in size while straining and coughing. Ultrasonography and computed tomography scan showed dilatation of internal jugular veins on both sides. Since the patient was asymptomatic and had no complications, he was advised regular follow-up. This rare benign condition should be kept in mind as a differential diagnosis of an expansile neck mass.
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Affiliation(s)
- V Srinivasa
- Department of ENT, Vinayaka Mission's Medical College and Hospital, Pondicherry 609609, India
| | - S Jayendiran
- Department of ENT, Vinayaka Mission's Medical College and Hospital, Pondicherry 609609, India
| | - Darshan Kayarkar
- Department of ENT, Vinayaka Mission's Medical College and Hospital, Pondicherry 609609, India
| | - Aleena Aliyar
- Vinayaka Mission's Medical College and Hospital, Pondicherry 609609, India
| | - T I Aravind
- Department of ENT, Vinayaka Mission's Medical College and Hospital, Pondicherry 609609, India
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Anderson SE, Han WM, Srinivasa V, Mohiuddin M, Ruehle MA, Moon JY, Shin E, San Emeterio CL, Ogle ME, Botchwey EA, Willett NJ, Jang YC. Determination of a Critical Size Threshold for Volumetric Muscle Loss in the Mouse Quadriceps. Tissue Eng Part C Methods 2019; 25:59-70. [PMID: 30648479 PMCID: PMC6389771 DOI: 10.1089/ten.tec.2018.0324] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/02/2019] [Indexed: 12/15/2022] Open
Abstract
IMPACT STATEMENT The goal of this study was to determine the threshold for a critically sized, nonhealing muscle defect by characterizing key components in the balance between fibrosis and regeneration as a function of injury size in the mouse quadriceps. There is currently limited understanding of what leads to a critically sized muscle defect and which muscle regenerative components are functionally impaired. With the substantial increase in preclinical VML models as testbeds for tissue engineering therapeutics, defining the critical threshold for VML injuries will be instrumental in characterizing therapeutic efficacy and potential for subsequent translation.
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Affiliation(s)
- Shannon E. Anderson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Woojin M. Han
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Vunya Srinivasa
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
| | - Mahir Mohiuddin
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Marissa A. Ruehle
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - June Young Moon
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
| | - Eunjung Shin
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
| | - Cheryl L. San Emeterio
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Molly E. Ogle
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Edward A. Botchwey
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Nick J. Willett
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- Department of Orthopedics, Emory University, Atlanta, Georgia
- Atlanta Veteran's Affairs Medical Center, Decatur, Georgia
| | - Young C. Jang
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
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Mohan CD, Srinivasa V, Rangappa S, Mervin L, Mohan S, Paricharak S, Baday S, Li F, Shanmugam MK, Chinnathambi A, Zayed ME, Alharbi SA, Bender A, Sethi G, Basappa, Rangappa KS. Trisubstituted-Imidazoles Induce Apoptosis in Human Breast Cancer Cells by Targeting the Oncogenic PI3K/Akt/mTOR Signaling Pathway. PLoS One 2016; 11:e0153155. [PMID: 27097161 PMCID: PMC4838272 DOI: 10.1371/journal.pone.0153155] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 03/24/2016] [Indexed: 12/31/2022] Open
Abstract
Overactivation of PI3K/Akt/mTOR is linked with carcinogenesis and serves a potential molecular therapeutic target in treatment of various cancers. Herein, we report the synthesis of trisubstituted-imidazoles and identified 2-chloro-3-(4, 5-diphenyl-1H-imidazol-2-yl) pyridine (CIP) as lead cytotoxic agent. Naïve Base classifier model of in silico target prediction revealed that CIP targets RAC-beta serine/threonine-protein kinase which comprises the Akt. Furthermore, CIP downregulated the phosphorylation of Akt, PDK and mTOR proteins and decreased expression of cyclin D1, Bcl-2, survivin, VEGF, procaspase-3 and increased cleavage of PARP. In addition, CIP significantly downregulated the CXCL12 induced motility of breast cancer cells and molecular docking calculations revealed that all compounds bind to Akt2 kinase with high docking scores compared to the library of previously reported Akt2 inhibitors. In summary, we report the synthesis and biological evaluation of imidazoles that induce apoptosis in breast cancer cells by negatively regulating PI3K/Akt/mTOR signaling pathway.
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Affiliation(s)
| | - V Srinivasa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India
| | - Shobith Rangappa
- Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 060-0808, Japan
| | - Lewis Mervin
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom
| | - Surender Mohan
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shardul Paricharak
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom.,Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Sefer Baday
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom.,Applied Informatics Department, Informatics Institute, Istanbul Technical University, 34469, Istanbul, Turkey
| | - Feng Li
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - M E Zayed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia
| | - Andreas Bender
- Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Kingdom of Saudi Arabia.,School of Biomedical Sciences, CHIRI Biosciences Research Precinct, Curtin University, Western Australia 6009, Australia
| | - Basappa
- Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Central College Campus, Palace Road, Bangalore 560001, India
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Abstract
Hot water epilepsy (HWE) is a type of reflex epilepsy which occurs when hot water is poured over the head. Most cases have been reported from Southern India. Genetic, cultural, and geographical factors can be responsible for HWE. HWE can be treated by clobazam 1-2 h prior to take a bath rather than continuous anti-epileptic therapy. Medication prior to bathing may be useful in treating older children, eliminating the need to be accompanied by an adult during bathing. It can also be treated by reducing the temperature of the water used for bathing. Here, we report three cases of HWE in varying age groups.
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Affiliation(s)
- Rajath Pejaver
- Department of Pediatrics, Basaveshwara Medical College Hospital and Research Centre, Chitradurga, Karnataka, India
| | - V. Srinivasa
- Department of Pediatrics, Basaveshwara Medical College Hospital and Research Centre, Chitradurga, Karnataka, India
| | - S. P. Basavanthappa
- Department of Pediatrics, Basaveshwara Medical College Hospital and Research Centre, Chitradurga, Karnataka, India
| | - C. L. Srinivasa Murthy
- Department of Pediatrics, Basaveshwara Medical College Hospital and Research Centre, Chitradurga, Karnataka, India
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Taylor JM, Srinivasa V, Medford J. Electrically protected resonant exchange qubits in triple quantum dots. Phys Rev Lett 2013; 111:050502. [PMID: 23952376 DOI: 10.1103/physrevlett.111.050502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Indexed: 06/02/2023]
Abstract
We present a modulated microwave approach for quantum computing with qubits comprising three spins in a triple quantum dot. This approach includes single- and two-qubit gates that are protected against low-frequency electrical noise, due to an operating point with a narrowband response to high frequency electric fields. Furthermore, existing double quantum dot advances, including robust preparation and measurement via spin-to-charge conversion, are immediately applicable to the new qubit. Finally, the electric dipole terms implicit in the high frequency coupling enable strong coupling with superconducting microwave resonators, leading to more robust two-qubit gates.
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Affiliation(s)
- J M Taylor
- Joint Quantum Institute/National Institute of Standards and Technology, College Park, Maryland 20742, USA.
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Srinivasa V, Nowack KC, Shafiei M, Vandersypen LMK, Taylor JM. Simultaneous spin-charge relaxation in double quantum dots. Phys Rev Lett 2013; 110:196803. [PMID: 23705734 DOI: 10.1103/physrevlett.110.196803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Indexed: 06/02/2023]
Abstract
We investigate phonon-induced spin and charge relaxation mediated by spin-orbit and hyperfine interactions for a single electron confined within a double quantum dot. A simple toy model incorporating both direct decay to the ground state of the double dot and indirect decay via an intermediate excited state yields an electron spin relaxation rate that varies nonmonotonically with the detuning between the dots. We confirm this model with experiments performed on a GaAs double dot, demonstrating that the relaxation rate exhibits the expected detuning dependence and can be electrically tuned over several orders of magnitude. Our analysis suggests that spin-orbit mediated relaxation via phonons serves as the dominant mechanism through which the double-dot electron spin-flip rate varies with detuning.
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Affiliation(s)
- V Srinivasa
- Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA.
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Mutreja D, Nijhawan VS, Srinivasa V, Lakhtakia R, Subramanya H. Value of ancillary studies in the evaluation of fine-needle aspiration specimens: Our experience. J Cytol 2012; 29:103-10. [PMID: 22787289 PMCID: PMC3391789 DOI: 10.4103/0970-9371.97148] [Citation(s) in RCA: 4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: The cytological diagnosis of poorly differentiated tumors is challenging because the tumor cells may have morphologically difficult presentations in materials obtained by fine-needle aspiration cytology (FNAC). With the application of FNAC in primary diagnosis of malignant lesions, there has been a significant increase in the use of ancillary studies in the aspirated material. Aims: We evaluated the value of ancillary studies, namely cell blocks, immunocytochemistry (ICC) and electron microscopy (EM), in the final interpretation of FNAC smears. Materials and Methods: Sixty-nine cases of neoplastic swellings were subjected to FNAC. Material acquired was divided for ICC, consisting of immunoperoxidase staining of direct smears, and/or cellblocks and EM, in addition to routine light microscopy (LM). Correlation with the available histological material with immunohistochemistry and/or pertinent clinical information was used as a “gold” standard. Results: Five (7.2%) cases were excluded from the study, the material being necrotic or insufficient. Cell blocks were available in 46/64 (71.8%) cases, ICC evaluation was performed in 41/64 cases (64%) and EM studies were done in 57/64 cases (89%). Diagnostic accuracy of LM alone was 32/64 (50%). Cell blocks improved the diagnoses in 8/46 (17%) cases. The ICC data were diagnostic in 18/41 (43.9%) cases, helpful in 8/41 (19.6%) cases and non-helpful in 15/41 (36.5%) cases. EM studies were diagnostic in 22/57 (38.5%) cases, helpful in 18/57 (31.5%) cases and non-helpful in 17/57 (30%) cases. In 34/64 (53.1%) cases, all ancillary techniques (cell blocks, ICC and EM) were applied and their diagnostic accuracy was compared. Conclusions: With appropriate case selection, ancillary studies performed on aspirated material can provide useful information in FNAC.
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Affiliation(s)
- D Mutreja
- Department of Pathology, 12 Air Force Hospital, Air Force Station, Gorakhpur, India
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Djalali AG, Srinivasa V, Sadovnikoff N. Hydroxyethyl starch and Gelofusine on pulmonary function in patients undergoing abdominal aortic aneurysm surgery. Br J Anaesth 2004; 93:467; author reply 467-8. [PMID: 15304411 DOI: 10.1093/bja/aeh606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
- V Srinivasa
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham & Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
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Lieberman ER, Gilbert SG, Srinivasa V. The use of gas permeability as a molecular probe for the study of cross-linked collagen structures. Trans N Y Acad Sci 1972; 34:694-708. [PMID: 4509225 DOI: 10.1111/j.2164-0947.1972.tb02724.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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