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Marimuthu G, Priyadharsini CI, Prabhu S, Viji A, Vignesh S, AlSalhi MS, Lee J, Palanisamy G. Silver-decorated SrTiO 3 nanoparticles for high-performance supercapacitors and effective remediation of hazardous pollutants. Environ Geochem Health 2024; 46:96. [PMID: 38376605 DOI: 10.1007/s10653-024-01875-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/14/2024] [Indexed: 02/21/2024]
Abstract
SrTiO3/Ag nanocomposites were synthesized using a facile wet impregnation method, employing rigorous experimental techniques for comprehensive characterization. XRD, FTIR, UV, PL, FESEM, and HRTEM were meticulously utilized to elucidate their structural, functional, morphological, and optical properties. The electrochemical performance of the SrTiO3/Ag nanocomposite was rigorously assessed, revealing an impressive specific capacitance of 850 F/g at a current density of 1 A. Furthermore, the photocatalytic activity of the SrTiO3/Ag nanocomposite was rigorously examined using methylene blue (MB) dye, and the results were outstanding. After 120 min of UV irradiation, the nanocomposite exhibited an exceptional MB dye degradation efficiency exceeding 88%. The SrTiO3/Ag nanocomposite represents an exemplary catalyst in terms of efficiency, cost-effectiveness, environmental compatibility, and reusability. The electron and superoxide radicals play a chief role in the MB dye degradation process. The inclusion of Ag within the SrTiO3 matrix facilitated the formation of a conductive nano-network, ultimately resulting in superior capacitive and photocatalytic performance.
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Affiliation(s)
- G Marimuthu
- Department of Physics, Mahendra College of Engineering, Salem, Tamil Nadu, 636106, India
| | - C Indira Priyadharsini
- Department of Physics, Muthayammal College of Arts & Science, Rasipuram, Namakkal, Tamil Nadu, 637408, India.
| | - S Prabhu
- Department of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, 52900, Ramat Gan, Israel
- Department of Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 602 105, India
| | - A Viji
- Department of Physics, Kongunadu College of Engineering and Technology, Thottiyam, Tamil Nadu, 621215, India
| | - S Vignesh
- Department of Applied Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 602105, India
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, 114511, Riyadh, Saudi Arabia
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, Republic of Korea
| | - Govindasamy Palanisamy
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, Republic of Korea.
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Vignesh S, Renukadevi P, Nagendran K, Senthil N, Kumar RV, SwarnaPriya R, Behera TK, Karthikeyan G. A distinct strain of tomato leaf curl New Delhi virus that causes mosaic disease in ash gourd and other cucurbitaceous crops. Front Microbiol 2023; 14:1268333. [PMID: 37965544 PMCID: PMC10641021 DOI: 10.3389/fmicb.2023.1268333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/05/2023] [Indexed: 11/16/2023] Open
Abstract
Ash gourd (Benincasa hispida) is a cucurbitaceous crop cultivated as an edible vegetable rich in vitamins, minerals, dietary fibers and antioxidants. In a field survey conducted in the Udumalpet region of Tamil Nadu during 2019, the incidence of mosaic disease on ash gourd crop was observed to be 75%. The DNA-A and DNA-B components of begomovirus genome have been identified as associated with this disease. Both the cloned DNA-A and DNA-B genomic components shared highest pairwise sequence identities with the isolates of tomato leaf curl New Delhi virus (ToLCNDV), a bipartite begomovirus. Recombinant analysis showed that both the components are possibly evolved through intra-species recombination between ToLCNDV isolates. Tomato leaf curl Bangladesh betasatellite (ToLCBB) is not naturally associated with this sample. The results of infectivity studies on ash gourd and other cucurbitaceous crops demonstrates the Koch's postulates, when co-inoculation of DNA-A and DNA-B of ToLCNDV was undertaken. However, the inoculation of non-cognate ToLCBB along with DNA-A and DNA-B enhances the symptom expression and reduces the time taken for symptom development. Thus, Koch's postulates were proved for these virus complexes on cucurbitaceous crops. Furthermore, an enhanced accumulation of DNA-A component was detected in the cucurbits co-inoculated with ToLCNDV and ToLCBB. This report highlights the importance of investigating the spread of these disease complexes with other cucurbitaceous crops in India.
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Affiliation(s)
- S. Vignesh
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - P. Renukadevi
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - K. Nagendran
- Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - N. Senthil
- Department of Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - R. Vinoth Kumar
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - R. SwarnaPriya
- Floriculture Research Station, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | | | - G. Karthikeyan
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
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Dedhia KV, Vignesh S, Mukuntharajan T, Karunakaran N, Rajagopal G. Post-Traumatic High-Flow Priapism: Accessory Pudendal Origin of Cavernosal Artery From External Iliac Artery - A Case Report. Vasc Endovascular Surg 2023; 57:791-794. [PMID: 37121921 DOI: 10.1177/15385744231173195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
High-flow priapism is an uncommon condition typically resulting from penile or perineal trauma, due to laceration of cavernosal artery. We present a case of 24-year-old male who presented with post-traumatic painless priapism. Ultrasound showed hematoma with arterio-cavernosal fistula. On CT Angiogram, the cavernosal artery was seen arising from accessory pudendal artery, which arose from inferior epigastric artery (IEA), branch of external iliac artery (EIA). Catheter angiogram of EIA showed fistulous communication at the base of the penis from a branch of IEA. Selective embolisation of the artery was done using 33% glue (n-butyl cyanoacrylate). Post embolisation, no residual filling of the fistula and partial detumescence of penis was noted. Transarterial embolisation is usually preferred as first line of management in high-flow fistulous priapisms.
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Affiliation(s)
- Karan Visanji Dedhia
- Department of Imaging Sciences and Interventional Radiology, Meenakshi Mission Hospital and Research Centre, Madurai, TN, India
| | - S Vignesh
- Department of Imaging Sciences and Interventional Radiology, Meenakshi Mission Hospital and Research Centre, Madurai, TN, India
| | - T Mukuntharajan
- Department of Imaging Sciences and Interventional Radiology, Meenakshi Mission Hospital and Research Centre, Madurai, TN, India
| | - N Karunakaran
- Department of Imaging Sciences and Interventional Radiology, Meenakshi Mission Hospital and Research Centre, Madurai, TN, India
| | - Ganesh Rajagopal
- Department of Imaging Sciences and Interventional Radiology, Meenakshi Mission Hospital and Research Centre, Madurai, TN, India
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Nagendran K, Kumari S, Pandey S, Karmakar P, Chaubey T, Kumar R, Vignesh S, Karthikeyan G, Behera TK. Emergence of yellowing disease in cucurbitaceous vegetables caused by Crinivirus and Polerovirus in India. Virology 2023; 587:109876. [PMID: 37688923 DOI: 10.1016/j.virol.2023.109876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/13/2023] [Accepted: 08/29/2023] [Indexed: 09/11/2023]
Abstract
Totally 102 symptomatic samples of cucurbitaceous vegetables showing yellowing were collected from fields of Uttar Pradesh and screened by RT-PCR assay for the presence of Crinivirus and Polerovirus. Among them, Crinivirus (16%) and Polerovirus (23%) were tested positive with the universal primer pairs. Based on the sequence analysis of amplified product, two Crinivirus (Cucurbit chlorotic yellows virus - CCYV and Cucurbit yellow stunting disorder virus - CYSDV) and two Polerovirus (Cucurbit aphid-borne yellows virus - CABYV and Luffa aphid-borne yellows virus - LABYV) species were characterized. Phylogenetic analysis revealed less genetic distance among the Indian isolates of CCYV, CYSDV and LABYV whereas CABYV closely related to Chinese isolates. To the best of our knowledge, this study documents infection of CCYV on cucumber, round melon and muskmelon; CYSDV on satputia and sponge gourd; CABYV on ivy gourd; and LABYV on ridge gourd, satputia and muskmelon for the first time in India.
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Affiliation(s)
- Krishnan Nagendran
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India.
| | - Shweta Kumari
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India
| | - Sudhakar Pandey
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India
| | - Pradip Karmakar
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India
| | - Tribhuvan Chaubey
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India
| | - Rajesh Kumar
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305, India
| | - S Vignesh
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Gandhi Karthikeyan
- Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
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Ranjith R, Vignesh S, Balachandar R, Suganthi S, Raj V, Ramasundaram S, Kalyana Sundar J, Shkir M, Oh TH. Construction of novel g-C 3N 4 coupled efficient Bi 2O 3 nanoparticles for improved Z-scheme photocatalytic removal of environmental wastewater contaminant: Insight mechanism. J Environ Manage 2023; 330:117134. [PMID: 36584459 DOI: 10.1016/j.jenvman.2022.117134] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Recently, the major environmental pollution produced by the release of wastewater in liquid type is one of the most extensive forms of foremost pollution in water ecosystems. In this article, the Bi2O3/g-C3N4 nanocomposite with a direct Z-scheme was effectively obtained by a facile hydrothermal system. The crystal structures, surface morphology, chemical composition, and the optical belongings of the as-obtained composite catalysts were examined by Power XRD, FT-IR spectra, High-resolution XPS spectra, FE-SEM images with EDX spectra, High-resolution TEM images, UV-Vis DRS, and PL spectra respectively. Furthermore, the photocatalytic performance was assessed by the degradation of aqueous Rhodamine B (Rh B) dye under visible-light exposure. The Bi2O3/g-C3N4 composite photocatalysts (PCs) showed the maximum photo-degradation efficiency through a rate constant value of 0.0149 min-1, which is 4.9 and 5.3 folds superior to Bi2O3, and GCN, respectively. The better GBO2 nanocomposite PCs showed a superior photocatalytic degradation performance (>82%) of aqueous Rh B dye after five successive recycles. Moreover, based on these outcomes of the radical scavenging test, a direct and effective Z-scheme photocatalytic charger transfer mechanism was also projected. Finally, the reusability of the as-obtained Bi2O3/g-C3N4 nanocomposite has better stability and reusability, which was a favourable applicant for wastewater handling.
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Affiliation(s)
- R Ranjith
- Department of Physics, K.S.R. College of Engineering, Tiruchengode, 637 215, Tamil Nadu, India
| | - S Vignesh
- Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Ramalingam Balachandar
- Department of Biotechnology, Prathyusha Engineering College, Chennai, 602 025, Tamil Nadu, India
| | - S Suganthi
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India.
| | - V Raj
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Subramaniyan Ramasundaram
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-si, Gyeongbuk, 38541, Republic of Korea.
| | - J Kalyana Sundar
- Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Mohd Shkir
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; University Center for Research & Development (UCRD), Chandigarh University, NH95, Chandigarh-Ludhiana Highway, Gharuan, Mohali, Punjab, 140413, India
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-si, Gyeongbuk, 38541, Republic of Korea
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Saraswathi V, Vignesh S. EFFECT OF VAGAL NERVE STIMULATION AND JACOBSON RELAXATION TECHNIQUE ON AGORAPHOBIA AMONG POST NEUROLOGICAL ILL-PATIENTS. Psychiatr Danub 2023; 35:604-605. [PMID: 37992111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Affiliation(s)
- V Saraswathi
- Saveetha College of Physiotherapy, SIMATS, Chennai, Tamil Nadu, India
| | - S Vignesh
- Saveetha College of Physiotherapy, SIMATS, Chennai, Tamil Nadu, India
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Raj RM, Ganesan S, Suganthi S, Vignesh S, Hatamleh AA, Alnafisi BK, Venkatesan R, Raj V, Lo HM. Facile construction of cost-effective zinc-aluminium polymeric framework for efficient removal of selective both drug and dye from an aqueous medium. Chemosphere 2023; 311:137105. [PMID: 36347355 DOI: 10.1016/j.chemosphere.2022.137105] [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: 09/25/2022] [Revised: 10/17/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
A novel aluminium (Al) and its active alloys are extensively been used in nearly all areas owing to their cost-effectiveness. But when it is subjected to an aqueous medium, gets corroded through a chemical response. In this paper, a novel framework was fabricated by copolymer coating over on Al and loaded with zinc via electro polymerization and electrodeposition method ([EDA- OPDA]Al@Zn). The as-fabricated composite has emerged for the sorption of Methylene Blue (MB) aqueous dye and Paracetomal drug (PAR). The as-fabricated composite framework has been categorized via IR spectra, FE-SEM images, and EDX spectra. The sorption progression was optimized for numerous prompting features like pH, contact time and impact of dosage. Based on kinetics data, the growth in QE value by an enhancement in temperature for adsorption and the higher r values shows the adsorption progression is a pseudo-second-order model. The thermodynamic constraints specify that the field of adsorbate is impulsive and typical endothermic process. Instead, the corrosion resistance of a composite in the 3.5% of NaCl. Solution was explored via EIS spectra and potentio-dynamic polarization. Depending on the observed features, it indicates that the [EDA-OPDA]Al@Zn framework provided fantastic corrosion resistance. So it is obvious that the as-synthesized framework is of multitasking, that it could be successfully performed for the exclusion of MB aqueous dye and PAR drug from the aqueous medium and it also withstands effectively in this corrosive medium.
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Affiliation(s)
- R Mohan Raj
- Department of Chemistry, J.K.K.Nataraja College of Arts and Science, Komarapalayam, Namakkal, Tamil Nadu, India
| | - Sivarasan Ganesan
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, Taiwan
| | - S Suganthi
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636011, Tamil Nadu, India
| | - S Vignesh
- SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Ashraf Atef Hatamleh
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Bassam Khalid Alnafisi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Raja Venkatesan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - V Raj
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636011, Tamil Nadu, India.
| | - Huang-Mu Lo
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, Taiwan.
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Kumar S, Nirmal Thirunavookarasu S, Sunil C, Vignesh S, Venkatachalapathy N, Rawson A. Mass transfer kinetics and quality evaluation of tomato seed oil extracted using emerging technologies. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103203] [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: 11/09/2022]
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Kumar S, Rawson A, Kumar A, Sunil CK, Vignesh S, Venkatachalapathy N. Lycopene Extraction from Industrial Tomato Processing Waste using Emerging Technologies, and its application in Enriched Beverage Development. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.16156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sumit Kumar
- Center of Excellence in Non‐Thermal Processing National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
| | - Ashish Rawson
- Center of Excellence in Non‐Thermal Processing National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
| | - Anand Kumar
- Food Packaging and System Development National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
| | - CK Sunil
- Department of Food Engineering National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
| | - S Vignesh
- Department of Academics and Human Resource Development National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
| | - N. Venkatachalapathy
- Department of Food Engineering National Institute of Food Technology Entrepreneurship and Management (NIFTEM) Thanjavur Tamil Nadu 613005 India
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Goldstein I, Hassan T, Li J, Riad M, Vignesh S, Zou K. Treatment and comorbidities of patients with erectile dysfunction before and during COVID-19 in the United States: A real-world data analysis. J Sex Med 2022. [PMCID: PMC9080966 DOI: 10.1016/j.jsxm.2022.03.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Introduction Objectives Methods Results Conclusions Disclosure
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Vignesh S, Prasad SN, Singh V, Neyaz Z, Phadke RV, Mehrotra A, Mishra P. Angiographic analysis on posterior fossa hemorrhages and vascular malformations beyond aneurysms by CT angiography and digital subtraction angiography. Egypt J Neurosurg 2022. [DOI: 10.1186/s41984-022-00152-2] [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: 11/10/2022] Open
Abstract
Abstract
Background
Posterior fossa malformations are less common than supratentorial malformations, but hemorrhages in posterior fossa are more serious due to presence of vital structures within this region. Most common cause of bleed in posterior fossa apart from hypertension is aneurysms but other vascular malformations are also there which cause hemorrhage. Here we discuss other causes of posterior fossa bleed beyond aneurysms.
Results
A total of 80 patients were evaluated: 47 (58.8%) had aneurysms, 29 (36.3%) had arteriovenous malformations, one each had developmental venous anomaly and brainstem cavernoma. Thirty vascular malformations were detected, of which 18 (62.1%) were pial arteriovenous malformations (AVMs), 11 (37.9%) were dural arteriovenous fistulas (dAVF), and one had developmental venous anomaly (DVA). Six patients of AVM underwent both DSA and CTA, and CTA could correctly diagnose only 2 of 4 pial AVMs detected by DSA. Among two dAVFs detected by DSA, CTA could demonstrate dAVF only in one patient.
Conclusion
CTA could be used as alternative to DSA in diagnosis and characterizing aneurysms in posterior fossa but for AVMs, 3D-CTA cannot replace DSA; however potential of time-resolved CTA (TR-CTA) appears promising.
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Vignesh S, Prasad SN, Singh V, Phadke RV, Balaguruswamy MM, Udiya A, Shetty GS, Dhull V. Balloon-Assisted Coiling of Intracranial Aneurysms: Technical Details and Evaluation of Local Complications. Neurol India 2022; 70:643-651. [PMID: 35532633 DOI: 10.4103/0028-3886.344626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Wide-neck intracranial aneurysms need additional devices like balloons or stent for management. Balloon-assisted coiling has evolved both with interventionalist experience and device modifications. OBJECTIVE We discussed our experience, evolution, and complications with this novel technique. MATERIALS AND METHODS Data of 2014-2019 was retrospectively reviewed for type of balloon used along with complications in intracranial aneurysm coiling. Two hundred five aneurysms were detected in 188 patients, of which balloon-assisted coiling was planned for 198 aneurysms. Both single and double-lumen balloons were used. Aneurysms were divided into bifurcation and sidewall aneurysms. The complications were compared between bifurcation and sidewall aneurysms, and between single and double lumen balloons. RESULTS Balloon-assisted coiling was planned for 198 aneurysms but successfully done for 195 (98.5%) cases. Single-lumen balloons were used in 56 aneurysms (28.3%), and double-lumen balloons were used in 142 cases (71.7%). Procedural thromboembolism within parent vessel was seen in 28 cases (14.1%); however symptomatic were encountered in 5 cases (2.5%). Intraprocedural rupture of the aneurysmal sac was seen in 9 cases (4.5%). The procedure-related mortality in our series was 1.6% (3/188 patients), and morbidity was 4.3% (8/188 patients). The complications among bifurcation and sidewall aneurysms compared between single- and double-lumen balloons showed a greater number of symptomatic thromboembolic complications in sidewall aneurysms with the use of single lumen balloons. CONCLUSIONS There are significant symptomatic thromboembolic complications in sidewall aneurysms with the use of single-lumen balloons which decreased as interventionalist experience evolved and better hardware developed.
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Affiliation(s)
- S Vignesh
- Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Surya N Prasad
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Patna, Bihar, 801507, India
| | - Vivek Singh
- Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Rajendra V Phadke
- Department of Radiodiagnosis and Interventional Radiology, Apollomedics Superspeciality Hospitals; Former Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Madan M Balaguruswamy
- Department of Interventional Radiology, Royal Care Super Speciality Hospital, Coimbatore, India, Former Neuroradiology Fellow; Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Alok Udiya
- Department of Interventional Radiology, CHL Hospital, Indore, India, Former Neuroradiology Fellow; Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Gurucharan S Shetty
- Interventional Radiologist, Fortis Hospital and Cancer Institute, Bengaluru, Karnataka, India, Former Neuroradiology Fellow; Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Vedita Dhull
- Department of Radiodiagnosis (Former Neuroradiology Fellow), Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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Vignesh S, Iqbal UM. Preparation and characterization of bio-based nano cutting fluids for tribological applications. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2038191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S. Vignesh
- Department of Mechanical Engineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - U. Mohammed Iqbal
- Department of Mechanical Engineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
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Vignesh S, Gudapati P, Kumar G, Das J, Dhawan R, Mahapatra. Acute lymphocytic leukemia masqeurading as hypereosinophillia: A rare encounter. Pediatric Hematology Oncology Journal 2022. [DOI: 10.1016/j.phoj.2022.10.014] [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: 11/27/2022] Open
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Vignesh S, Rathish RL, Bipin KC, John L, Deepa PM. Molecular detection of quaternary ammonium compound resistance genes of Staphylococcus aureus from udder surface and mastitis milk of bovines. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.4.669-673] [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: 01/12/2023] Open
Abstract
Quaternary ammonium compounds (QAC) are widely used biocides in the field of medical and veterinary practice. Resistance to QACs is an emerging problem due to this widespread use. The present study was undertaken to detect the presence of genes that contribute to resistance to QACs in Staphylococcus aureus isolates obtained from udder surface and mastitis milk. A total 22 isolates of S. aureus were obtained from udder washings and milk of bovine mastitis cases. Among these, seventeen isolates were from udder wash samples and five isolates from clinical and subclinical cases of mastitis. Broth microdilution assay was performed to assess the minimum inhibitory concentration (MIC) of the isolates against Cetyltrimethylammonium bromide (CTAB), a QAC. Polymerase chain reaction (PCR) was done targeting qac A/B gene which codes for efflux pump which targets QACs. In the present study qac A/B gene was detected in seven out of 22 isolates of S. aureus. Three of these isolates were obtained from udder washings before milking and four, after milking. None of the S. aureus isolates from mastitis milk possessed the gene. The average minimum inhibitory concentration of qac A/B positive isolates against CTAB was 0.63 ± 0.55 μg/ml. The average MIC between qac A/B positive and negative isolates were statistically insignificant. The study points to the fact that multiple factors could be contributing to biocide resistance in S. aureus.
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Abdulkhader A, Meganath K, Vignesh S, Rojan P, Muhammed E, Rathish R, Asaf VM, Dinesh C. Comparison of California Mastitis Test and somatic cell counts for detection of subclinical mastitis in crossbred cattle. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.4.725-730] [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: 01/12/2023] Open
Abstract
Mastitis is a major constraint that severely affects milk production in dairy animals. The California Mastitis Test (CMT) is a reliable and rapid field test for the diagnosis of subclinical mastitis (SCM) which gives an indirect estimate of somatic cell count (SCC). Based on the results of CMT screening and SCC of the milk of 105 crossbred animals located in different farms in Wayanad and Calicut districts of Kerala state, the present study attempts to find the estimates of sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV), false discovery rate (FDR) and false omission rate (FOR) of CMT relative to SCC as the reference standard. The correlation and agreement between CMT and SCC were also analysed. The estimated Spearman and Kendall Tau b correlation coefficients were 0.88 and 0.76, respectively, which indicated a strong positive relationship between CMT and SCC. The sensitivity and specificity values of CMT were 1.000±0.000 and 0.510±0.071, respectively. These values indicate that the probability for an animal with mastitis to be identified using CMT is 100 per cent and the probability of correctly identifying an animal without mastitis animal is 51 per cent. The high sensitivity value of CMT in this study indicated that CMT could be used to find out the true prevalence of SCM in crossbred animals. Analysis of the data also revealed that CMT had a PPV of 0.700±0.051 and an NPV of 1.000±0.000. The calculated accuracy of CMT was 0.771±0.041. The estimated FDR and FOR were 0.300±0.051 and 0.000±0.000, respectively. Kappa statistic was used to determine the level of agreement between CMT and SCC and the kappa coefficient value was 0.53±0.07 which indicated moderate agreement.
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Sivakumar JS, Ajay R, Sudhakar V, Ravivarman C, Vignesh S, Ahamed S. Chemical Characterization and Physical Properties of Dental Restorative Composite Resin with a Novel Multifunctional Cross-linking Comonomer. J Contemp Dent Pract 2021; 22:630-636. [PMID: 34393119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
AIM AND OBJECTIVE To chemically characterize restorative composite resin polymerized with 20 wt.% and 40 wt.% dipentaerythritol penta-/hexaacrylate (DPEPHA) comonomer. Furthermore, this study aimed to evaluate the conversion degree (DC) and glass transition temperature (Tg) of the newly formed copolymer. MATERIALS AND METHODS The trial groups were photo-polymerized with DPEPHA comonomer, whereas the control group was photo-polymerized only with the propriety resin monomers. Infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies were used for establishing copolymerization. The characteristics and composition (mass %) of the surface were explained by field-emission scanning electron microscopy (FESEM) and energy-dispersive X-ray (EDX) spectroscopy, respectively. The DC and Tg of the resultant copolymers were evaluated through FTIR and differential scanning calorimetry, respectively. Appropriate statistical tests with corresponding post hoc tests were employed to compare the medians and means of DC and Tg, respectively. RESULTS The formation of a new copolymer P(GEU-Co-DPEPHA) was evident. The DC and Tg of the P(GEU-Co-DPEPHA) copolymer were greater than the control. DPEPHA in the copolymer at 40 wt.% concentration showed the highest DC and Tg. CONCLUSION DPEPHA comonomer addition leads to the formation of a new P(GEU-Co-DPEPHA) copolymer with improved DC and Tg. CLINICAL SIGNIFICANCE The novel P(GEU-Co-DPEPHA) copolymer may improve the physico-mechanical and biological properties of the restorative composite resin. This would improve the quality of restoration and its in vivo serviceability, thereby imparting a good living quality to the entailed population.
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Affiliation(s)
- Jambai Sampathkumar Sivakumar
- Department of Conservative Dentistry and Endodontics, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India
| | - Ranganathan Ajay
- Department of Prosthodontics and Crown and Bridge, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India, Phone: +91 8754120490. E-mail:
| | - Venkatesan Sudhakar
- Department of Conservative Dentistry and Endodontics, Adhi Parasakthi Dental College and Hospital, Melmaruvathur, Tamil Nadu, India
| | - Chandramohan Ravivarman
- Department of Conservative Dentistry and Endodontics, Dhanalakshmi Srinivasan Dental College, Perambalur, Tamil Nadu, India
| | - Sundaravadivel Vignesh
- Department of Conservative dentistry and Endodontics, KSR Institute of Dental Science and Research, Tamil Nadu, India
| | - Shafie Ahamed
- Department of Conservative Dentistry and Endodontics, Rajah Muthiah Dental College and Hospital, Tamil Nadu, India
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Vignesh S, Ghai A. A Study on the Outcome of Antibiotic Eluting Intramedullary Interlocking Nails in the Primary Fixation of Gustilo and Anderson Grades II and IIIA Open Fractures of Tibia. J Orthop Case Rep 2020; 10:65-70. [PMID: 34169020 PMCID: PMC8046437 DOI: 10.13107/jocr.2020.v10.i09.1906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction: The incidence and outcome of infection in open tibial fractures is adequately recorded in literature. The aim of this study is to find out the deep infection rate, union rate, and functional outcome of open tibial fractures managed by prophylactic antibiotic eluting interlocking nail. Methodology: A total of 18 patients with 20 open tibial fractures who met the study criteria were included and followed up for a minimum of 1 year after surgical intervention. Reamed intramedullary interlocking nailing with antibiotic eluting nail was done followed by adequate skin cover. Results: The outcomes were assessed using lower extremity functional scale and radiological union scale in tibial fractures both of which showed maximum improvement in initial 3 months followed by a steady improvement till 1 year with a good degree of correlation between the two scales. The total incidence of deep infection in this study was 5% (n = 1). All cases achieved union and independent ambulation by 1 year. Conclusion: Our study shows good radiological and functional outcomes with prophylactic antibiotic-coated nailing of open tibial fractures of Grades II and IIIA. The rate of deep infection is 5% and union rate is 100% in our study. Further comparative studies are required for drawing more conclusions on application of the results in clinical practice.
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Venkataprasanna KS, Prakash J, Vignesh S, Bharath G, Venkatesan M, Banat F, Sahabudeen S, Ramachandran S, Devanand Venkatasubbu G. Fabrication of Chitosan/PVA/GO/CuO patch for potential wound healing application. Int J Biol Macromol 2019; 143:744-762. [PMID: 31622704 DOI: 10.1016/j.ijbiomac.2019.10.029] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/20/2019] [Accepted: 10/01/2019] [Indexed: 12/23/2022]
Abstract
Wound healing is a common issue in our day to day life. Our immune system repairs the damaged tissue by itself and its a time-consuming process. The GO/CuO nanocomposite (NC) was synthesized through the sol-gel method. XRD, FT-IR, Raman, and TEM analysis were used to analysis the physico-chemical properties of the sample. The GO/CuO patches were prepared using chitosan (Cs)/poly vinyl alcohol (PVA) due to its biocompatibility and biodegradable nature. The obtained patches showed better antimicrobial and wound healing property than recently reported materials. The GO/CuO NC plays a major part in angiogenesis process and in the synthesis, stabilization of extracellular matrix skin proteins. Thus, GO/CuO NC enhance the wound healing mechanism by increasing cell proliferation, antimicrobial property and rapid initiation of inflammatory. Moreover, the antimicrobial activity of CuO, GO, GO/CuO and GO/CuO patch were tested against bacteria causing wound infections. Cs/PVA patch and Cs/PVA/GO/CuO patch were analyzed for swelling, evaporation and degradation behavior. Increase in cell viability and migration of NIH3t3 cells by NC patch shows a potential way for wound healing applications.
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Affiliation(s)
- K S Venkataprasanna
- Department of Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram Dist, Tamil Nadu 603 203, India
| | - J Prakash
- Department of Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram Dist, Tamil Nadu 603 203, India
| | - S Vignesh
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram Dist, Tamil Nadu, India
| | - G Bharath
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Manigandan Venkatesan
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research Education, Chettinad Hospital and Research Institute, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - S Sahabudeen
- Department of Biotechnology, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram Dist, Tamil Nadu, India
| | - Saravanan Ramachandran
- Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chettinad Academy of Research Education, Chettinad Hospital and Research Institute, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - G Devanand Venkatasubbu
- Department of Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram Dist, Tamil Nadu 603 203, India.
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Singh V, Vignesh S, Neyaz Z, Phadke RV, Mehrotra A, Mishra P. Detection and Evaluation of Intracranial Aneurysms in the Posterior Fossa by Multidetector Computed Tomography Angiography - Comparison with Digital Subtraction Angiography. Asian J Neurosurg 2019; 14:491-498. [PMID: 31143268 PMCID: PMC6516002 DOI: 10.4103/ajns.ajns_290_18] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction: Posterior fossa hemorrhages are not so frequent but as posterior cranial fossa space is narrow and has many vital structures, even a small amount of bleed can lead to compression of brain stem and serious consequences. Identification and planning management of cause of bleed requires angiogram. Digital subtraction angiography (DSA) being invasive modality but is gold standard, so noninvasive computed tomography angiography (CTA) is compared to detect cause of bleed in the posterior fossa in this study. Materials and Methods: From January 2017 to October 2018, all patients with posterior fossa bleed who underwent CTA and DSA for evaluation were compared regarding identification of aneurysm as cause of bleed. Results: A total of 49 patients were evaluated in this study during study duration, of which 26 (53%) were male and 23 (47%) were female. Out of 49 patients evaluated, 47 patients had aneurysms detected on DSA. Of 25 patients who underwent both procedures, 23 patients had aneurysms, and correct diagnosis was made with CTA in 24 out of 25 aneurysms. One aneurysm missed by CTA was close to bony structure. Discussion: With advancement of CTA technology, sensitivity of detecting intracranial aneurysms has increased to >96%. The overall sensitivity in detecting aneurysms is 96% with sensitivity in detecting aneurysms >4 mm being 100%. The sensitivity of CTA for smaller sized aneurysms is low which is attributed partially to lower spatial resolution of CT compared to DSA. Conclusion: CTA is a simple, fast, and noninvasive imaging modality that can be used to detect and characterize intracranial aneurysms in the posterior fossa.
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Affiliation(s)
- Vivek Singh
- Department of Radiodiagnosis, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - S Vignesh
- Department of Radiodiagnosis, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Zafar Neyaz
- Department of Radiodiagnosis, SGPGIMS, Lucknow, Uttar Pradesh, India
| | | | - Anant Mehrotra
- Department of Neurosurgery, SGPGIMS, Lucknow, Uttar Pradesh, India
| | - Prabhakar Mishra
- Department of Biostatistics, SGPGIMS, Lucknow, Uttar Pradesh, India
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Raj TS, Vignesh S, Nishanthi P, Graff KH, Suji HA. Induction of defence enzymes activities in grape plant treated by seaweed algae against Plasmopara viticola and Uncinula necator causing downy and powdery mildews of grapes. Novel Research in Microbiology Journal 2018. [DOI: 10.21608/nrmj.2018.22705] [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: 10/27/2022] Open
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Vignesh S, Gopalakrishnan A, M.R. P, Nair SV, Jayakumar R, Mony U. Fabrication of micropatterned alginate-gelatin and k-carrageenan hydrogels of defined shapes using simple wax mould method as a platform for stem cell/induced Pluripotent Stem Cells (iPSC) culture. Int J Biol Macromol 2018; 112:737-744. [DOI: 10.1016/j.ijbiomac.2018.02.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 12/21/2022]
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Tripathi R, Vignesh S, Tamarapalli V, Medhi D. Cost Efficient Design of Fault Tolerant Geo-Distributed Data Centers. IEEE Trans Netw Serv Manage 2017. [DOI: 10.1109/tnsm.2017.2691007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Iluyomade A, Olowoyeye A, Fadahunsi O, Thomas L, Libend CN, Ragunathan K, Fenster J, Vignesh S. Interference with daily activities and major adverse events during esophageal pH monitoring with bravo wireless capsule versus conventional intranasal catheter: a systematic review of randomized controlled trials. Dis Esophagus 2017; 30:1-9. [PMID: 26952638 DOI: 10.1111/dote.12464] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
For three decades, ambulatory 24-hour intranasal pH monitoring has been the established gold standard for detecting acid reflux in patients with refractory gastroesophageal reflux disease. However, device-associated adverse events and unpleasant experiences, reported by patients during pH monitoring have led to the invention of more convenient pH monitors such as Bravo wireless capsule. To compare the interference with daily activities and major adverse events during pH monitoring with Bravo wireless capsule (Bravo) versus conventional intranasal catheter (catheter), PubMed, Cochrane Library, Clinical Trials.gov, and Google Scholar were searched up to March 20, 2015. Only randomized controlled trials in adult patients that compared the interference with routine daily activities and adverse events between Bravo and catheter pH monitors were included. After screening 574 articles, three unique studies with 167 patients met our inclusion criteria. The average age of patients enrolled in these studies was 51 years. Interference with normal daily activities was more in the catheter than Bravo group: 75 ± 5 versus 92 ± 2, P < 0.001 (Andrews et al, findings were reported as100 mm, mean visual analogue scale (VAS) ± standard error of the mean, 100 = completely normal); Wong et al. (mean ± standard error of the mean): 1.3 ± 0.2 versus 0.32 ± 0.1, P = 0.001 and Wenner et al. using 10 cm median VAS (Interquartile range),10 been the worst is 5.7 (2.3-8.0) compared to 0.7 (0.2-3.4), P < 0.0001, respectively. Overall adverse events were more in the catheter group than Bravo (39 ± 4 vs. 26 ± 4, P = 0.012 for Andrews et al. (100 been the worst) and 5.1 (2.0-6.6) vs. 2.1 (0.5-4.6), P < 0.001 for Wenner et al.). No overall adverse events recorded for Wong et al. Most patients in catheter group complained of nasal and throat symptoms. Significantly, runny nose in 24 out of 25 patients (96%) catheter versus 13 out of 25 (52%) Bravo, P = 0.001 and nose pain 15 out 25 (60%) versus 8 out of 25 patients (32%), P = 0.047, respectively for Wong et al. Andrews and Wenner et al also showed profound nasal discomforts in catheter group compared to Bravo (39 ± 3 vs. 10 ± 3, P < 0.001 and 6.5 (1.5-8.0) versus 0.2 (0.0-1.9), P < 0.0001, respectively. Throat symptoms reported in Wong et al. were mainly throat discomfort in catheter group 23 out of 25 patients (92%) versus Bravo 12 out of 25 (48%), P = 0.001 and throat pain catheter (12 out of 25 patients (48%) vs. Bravo 4 out of 25 (16%)), P = 0.032. This trend was also observed in Andrews et al. with profound throat discomfort in the catheter group 43 ± 4 compared to Bravo 19 ± 4, P < 0.001. Majority of the patients randomized to Bravo group reportedly perceived chest pain higher than those in catheter group; 9 out of 25 patients (36%) versus 2 out of 25 (8%), P = 0.037 in Wong et al. 29 ± 4 versus 14 ± 3, P = 0.001 for Andrews et al., 2.4 (0.3-5.9) versus 1.1 (0.3-2.9), P = 0.084 in Wenner et al. respectively (though not statistically significant). Bravo wireless capsule pH monitor interfered less with daily activities and adverse events were minimal compared to conventional intranasal catheter.
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Affiliation(s)
- A Iluyomade
- Department of Medicine, St John's Episcopal Hospital, Far Rockaway, New York, USA
| | - A Olowoyeye
- Department of Pediatrics, Children's hospital, Los Angeles, California, USA
| | - O Fadahunsi
- Department of Medicine, Reading Health System, West Reading, Pennsylvania, USA
| | - L Thomas
- Department of Medicine, St John's Episcopal Hospital, Far Rockaway, New York, USA
| | - C N Libend
- Department of Medicine, St John's Episcopal Hospital, Far Rockaway, New York, USA
| | - K Ragunathan
- Department of Medicine, University of Illinois, Peoria, Illinois, USA
| | - J Fenster
- Department of Medicine, St John's Episcopal Hospital, Far Rockaway, New York, USA
| | - S Vignesh
- Division of Gastroenterology and Hepatology, SUNY Downstate, Brooklyn, New York, USA
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Vignesh S, Bhole C, Bafna C, Nirala N, Prajapati M, Samar N, Meena RL. Isolated Myocysticercosis. J Assoc Physicians India 2016; 64:94-95. [PMID: 27731573] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cysticercosis, a parasitic disease caused by larval form of Taenia solium, is a major health concern in the developing world. The encysted larval stage can affect any part of the body, but are most frequently detected in brain, eye, skeletal muscle and subcutaneous tissue. Most muscular cysticercosis are almost always associated with central nervous system involvement or with multiple intramuscular cysts or both. Here we report an unusual case of cysticercosis in right rectus muscle which was an isolated muscle involvement without any other systemic manifestation.
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Affiliation(s)
| | | | | | | | | | | | - R L Meena
- Professor and Unit Head, Department of Medicine, RNT Medical College, Udaipur, Rajasthan
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Vignesh G, Pradeep I, Arunachalam S, Vignesh S, Arthur James R, Arun R, Premkumar K. Biological and protein-binding studies of newly synthesized polymer-cobalt(III) complexes. LUMINESCENCE 2015; 31:533-543. [DOI: 10.1002/bio.2992] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/02/2015] [Accepted: 07/04/2015] [Indexed: 01/09/2023]
Affiliation(s)
- G. Vignesh
- School of Chemistry; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - I. Pradeep
- School of Chemistry; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - S. Arunachalam
- School of Chemistry; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - S. Vignesh
- Department of Marine Science; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - R. Arthur James
- Department of Marine Science; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - R. Arun
- Department of Biomedical Science; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
| | - K. Premkumar
- Department of Biomedical Science; Bharathidasan University; Tiruchirappalli- 620 024 Tamil Nadu India
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Vignesh G, Sugumar K, Arunachalam S, Vignesh S, Arthur James R, Arun R, Premkumar K. Studies on the synthesis, characterization, human serum albumin binding and biological activity of single chain surfactant-cobalt(III) complexes. LUMINESCENCE 2015; 31:523-532. [PMID: 26250655 DOI: 10.1002/bio.2991] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 03/10/2015] [Revised: 07/02/2015] [Accepted: 07/04/2015] [Indexed: 11/10/2022]
Abstract
The interaction of surfactant-cobalt(III) complexes [Co(bpy)(dien)TA](ClO4)3 · 3H2O (1) and [Co(dien)(phen)TA](ClO4)3 · 4H2O (2), where bpy = 2,2'-bipyridine, dien = diethylenetriamine, phen = 1,10-phenanthroline and TA = tetradecylamine with human serum albumin (HSA) under physiological conditions was analyzed using steady state, synchronous, 3D fluorescence, UV/visabsorption and circular dichroism spectroscopic techniques. The results show that these complexes cause the fluorescence quenching of HSA through a static mechanism. The binding constant (Kb ) and number of binding-sites (n) were obtained at different temperatures. The corresponding thermodynamic parameters (∆G°, ∆H° and ∆S°) and Ea were also obtained. According to Förster's non-radiation energy transfer theory, the binding distance (r) between the complexes and HSA were calculated. The results of synchronous and 3D fluorescence spectroscopy indicate that the binding process has changed considerably the polarity around the fluorophores, along with changes in the conformation of the protein. The antimicrobial and anticancer activities of the complexes were tested and the results show that the complexes have good activities against pathogenic microorganisms and cancer cells.
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Affiliation(s)
- G Vignesh
- School of Chemistry, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - K Sugumar
- School of Chemistry, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - S Arunachalam
- School of Chemistry, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - S Vignesh
- Department of Marine Science, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - R Arthur James
- Department of Marine Science, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - R Arun
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
| | - K Premkumar
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli-, 620 024, Tamil Nadu, India
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Vignesh G, Sugumar K, Arunachalam S, Vignesh S, Arthur James R. A comparative study on the binding of single and double chain surfactant-cobalt(III) complexes with bovine serum albumin. Spectrochim Acta A Mol Biomol Spectrosc 2013; 113:415-422. [PMID: 23747382 DOI: 10.1016/j.saa.2013.04.123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 06/02/2023]
Abstract
The comparative binding effect of single and double aliphatic chain containing surfactant-cobalt(III) complexes cis-[Co(bpy)2(DA)2](ClO4)3·2H2O (1), cis-[Co(bpy)2(DA)Cl](ClO4)2·2H2O (2), cis-[Co(phen)2(CA)2](ClO4)3·2H2O (3), and cis-[Co(phen)2(CA)Cl](ClO4)2·2H2O (4) with bovine serum albumin (BSA) under physiological condition was analyzed by steady state, time resolved fluorescence, synchronous, three-dimensional fluorescence, UV-Visible absorption and circular dichroism spectroscopic techniques. The results show that these complexes cause the fluorescence quenching of BSA through a static mechanism. The binding constants (Kb) and the number of binding sites were calculated and binding constant values are found in the range of 10(4)-10(5) M(-1). The results indicate that compared to single chain complex, double chain surfactant-cobalt(III) complex interacts strongly with BSA. Also the sign of thermodynamic parameters (ΔG°, ΔH°, and ΔS°) indicate that all the complexes interact with BSA through hydrophobic force. The binding distance (r) between complexes and BSA was calculated using Förster non-radiation energy transfer theory and found to be less than 7 nm. The results of synchronous, three dimensional fluorescence and circular dichroism spectroscopic methods indicate that the double chain surfactant-cobalt(III) complexes changed the conformation of the protein considerably than the respective single chain surfactant-cobalt(III) complexes. Antimicrobial studies of the complexes showed good activities against pathogenic microorganisms.
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Affiliation(s)
- G Vignesh
- School of Chemistry, Bharathidasan University, Tiruchirapalli 620 024, Tamil Nadu, India
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Pandiyarajan T, Udayabhaskar R, Vignesh S, James RA, Karthikeyan B. Synthesis and concentration dependent antibacterial activities of CuO nanoflakes. Mater Sci Eng C Mater Biol Appl 2013; 33:2020-4. [PMID: 23498227 DOI: 10.1016/j.msec.2013.01.021] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 11/24/2012] [Accepted: 01/11/2013] [Indexed: 10/27/2022]
Abstract
We report, synthesis and antibacterial activities of CuO nanoflakes. CuO nanoparticles are prepared at room temperature through sol-gel method. X-ray diffraction studies show the particles are monoclinic (crystalline) in nature. Scanning electron microscopy (SEM) images clearly show that the prepared particles are flake like in structure. Fourier transform infrared (FTIR) spectra exhibits three different bands that correspond to the Au and Bu modes. Antibacterial studies were performed on Shigella flexneri, Staphylococcus aureus, Staphylococcus epidermidis, Salmonella typhimurium, Bacillus subtilis, Escherichia coli, Vibrio cholera, Pseudomonas aeruginosa and Aeromonas liquefaciens bacterial strains. Among these bacterial strains, S. flexneri and B. subtilis are most sensitive to copper oxide nanoparticles than the positive control (Penicillin G) and S. typhimurium strain shows the less sensitive. Results show that sensitivity is highly dependent on the concentrations of CuO nanoflakes.
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Affiliation(s)
- T Pandiyarajan
- Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India
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Kumarasamy P, Govindaraj S, Vignesh S, Rajendran RB, James RA. Anthropogenic nexus on organochlorine pesticide pollution: a case study with Tamiraparani river basin, South India. Environ Monit Assess 2012; 184:3861-3873. [PMID: 21800068 DOI: 10.1007/s10661-011-2229-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 06/08/2011] [Indexed: 05/31/2023]
Abstract
The levels of 17 organochlorine pesticides residues (OCPs) in surface water and sediments from Tamiraparani river basin, South India were investigated to evaluate their potential pollution and risk impacts. A total of 96 surface water and sediment samples at 12 sampling stations were collected along the river in four seasons during 2008-2009. The ΣOCP concentrations in surface water and sediments were in the range of 0.1 to 79.9 ng l(-1) and 0.12 to 3,938.7 ng g(-1) dry weight (dw), respectively. Among the OCPs, the levels of dichlorodiphenyltrichloroethanes (DDTs), aldrin, dieldrin, cis-chlordane, trans-chlordane, and mirex were dominant in the sediments. The dominant OCPs in water samples are heptachlor, o,p'-DDE, dieldrin, o,p'-DDD, and mirex, which show different source of contamination pattern among sampling seasons. The distribution pattern of DDTs, hexachlorocyclohexane, and other OCPs in the present study shows heterogenic nature of nonpoint source of pollution. Notable contamination of water and sediment sample that was observed in upstream (S2) 58 ng l(-1) and downstream (S11) 1,693 ng g(-1) dw explains agricultural and municipal outfalls, whereas frequent damming effect reduces the concentration level in the midstream. The overall spatial-temporal distribution pattern of ΣOCP residues are illustrated by GIS package.
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Affiliation(s)
- P Kumarasamy
- Department of Marine Science, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
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Arul V, Masilamoni JG, Jesudason EP, Jaji PJ, Inayathullah M, Dicky John DG, Vignesh S, Jayakumar R. Glucose Oxidase Incorporated Collagen Matrices for Dermal Wound Repair in Diabetic Rat Models: A Biochemical Study. J Biomater Appl 2011; 26:917-38. [DOI: 10.1177/0885328210390402] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Impaired wound healing in diabetes is a well-documented phenomenon. Emerging data favor the involvement of free radicals in the pathogenesis of diabetic wound healing. We investigated the beneficial role of the sustained release of reactive oxygen species (ROS) in diabetic dermal wound healing. In order to achieve the sustained delivery of ROS in the wound bed, we have incorporated glucose oxidase in the collagen matrix (GOIC), which is applied to the healing diabetic wound. Our in vitro proteolysis studies on incorporated GOIC show increased stability against the proteases in the collagen matrix. In this study, GOIC film and collagen film (CF) are used as dressing material on the wound of streptozotocin-induced diabetic rats. A significant increase in ROS ( p < 0.05) was observed in the fibroblast of GOIC group during the inflammation period compared to the CF and control groups. This elevated level up regulated the antioxidant status in the granulation tissue and improved cellular proliferation in the GOIC group. Interestingly, our biochemical parameters nitric oxide, hydroxyproline, uronic acid, protein, and DNA content in the healing wound showed that there is an increase in proliferation of cells in GOIC when compared to the control and CF groups. In addition, evidence from wound contraction and histology reveals faster healing in the GOIC group. Our observations document that GOIC matrices could be effectively used for diabetic wound healing therapy.
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Affiliation(s)
- V. Arul
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - J. G. Masilamoni
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
- Department of Neurology, Yerkes National Primate Research Center Emory University, 954 Gatewood Rd., Atlanta, GA 30329, USA
| | - E. P. Jesudason
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
| | - P. J. Jaji
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
| | - M. Inayathullah
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
- Department of Neurology, David Geffen School of Medicine University of California, Los Angeles, CA 90095, USA
| | - D. G. Dicky John
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
- Department of Bioinformatics, Sri Ramachandra University Chennai 600116, India
| | - S. Vignesh
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
| | - R. Jayakumar
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Hagey Laboratory of Regenerative Medicine, 257 Campus Dr, Stanford, CA 94305, USA
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Vignesh S, Hoffe SE, Shridhar R, Klapman J, Barthel JS. The feasibility, safety, and technique of endoscopic ultrasound (EUS)-guided fiducial marker placement for stereotactic body radiation therapy (SBRT) in borderline resectable pancreatic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
327 Background: Fiducial markers implanted into tumors that move with respiration facilitate planning for SBRT. To date, there is little evidence regarding the safety and utility of EUS implanted markers for “borderline resectable” pancreatic cancer. Methods: This is a retrospective review of 13 patients (7 men and 6 women) with “borderline resectable” pancreatic cancer as per NCCN guidelines. EUS-guided fiducial placement for stereotactic body radiation therapy was performed between January 2009 and September 2010. Gold cylindrical fiducials (0.35mmx 10mm or 0.75 mm X 10 mm; VISICOIL) were loaded into a 22g or 19 g EUS needle. With the needle in the target, the fiducial was deployed by retracting the needle and advancing the stylet. EUS confirmed fiducial position after deployment. A mean of 3 fiducials were placed (range 1-6) per patient. Fiducial position was analyzed at 4D CT simulation and daily cone beam imaging prior to SBRT. Results: Fiducial placement was successful in all. Technical difficulty was encountered in 2 patients secondary to retained food in stomach and uncinate tumors. Smaller (10x0.35mm) fiducials were successfully placed in these 2 patients. 3 patients had abdominal pain lasting < 12 hours after fiducial placement but none had any acute complications. In 2 patients, change in fiducial position was noted on follow-up cone beam CT. This apparent change in position was related to biliary drainage, gastric distension and a pre-existing pseudocyst. Though this is not indicative of fiducial migration, it impacts radiation planning and delivery. No complications were noted at the end of a mean follow-up period of 6 months. Conclusions: EUS fiducial placement to assist with stereotactic body radiation for “borderline resectable” pancreatic cancer is safe, feasible, and technically successful in most cases. True migration did not occur but other factors may cause an apparent change in fiducial position. Further studies are planned to optimize the best configuration of fiducial placement by virtue of tumor location for SBRT planning and treatment. No significant financial relationships to disclose.
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Affiliation(s)
- S. Vignesh
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. E. Hoffe
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - R. Shridhar
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. Klapman
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. S. Barthel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
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Kucera S, Harris CL, Vignesh S, Klapman J, Barthel JS. The use of small-caliber, covered, self-expandable metal stents for palliation of severe malignant dysphagia. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.134] [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: 11/20/2022] Open
Abstract
134 Background: Self-expandable covered metal stents are an important component of palliative care for malignant dysphagia; however significant complication rates have been associated with large diameter stents. We hypothesized that small-caliber, fully covered, self-expandable metal stents (sccSEMS) would prove adequate palliation of dysphagia in the absence of major complications. Methods: Prospective observational study of 17 patients presenting with severe malignant dysphagia between 12/1/08 and 7/30/10. 31 sccSEMS with internal diameters ranging from 8 mm to 16 mm were placed in 17 patients with pre-stent luminal diameters of < 8 mm (n = 13) or 8-10 mm (n = 4). 7 tracheobronchial stents (internal diameter 14–16 mm), 2 biliary stents (internal diameter 8–10 mm), and 22 specially constructed esophageal stents (internal diameter 12–16 mm) were placed. All stents were placed under direct endoscopic vision without fluoroscopic support. Dysphagia scores, migration rates, and complications were identified through review of endoscopy reports, outpatient clinical encounters, and 24-hour post-procedure phone surveys. Anticipated stent migration was defined as events which occurred during chemoradiation. Unanticipated stent migration was defined as events which occurred in the absence of treatment. Results: The post-stent median dysphagia score improved (decreased) from 3 to 2 (p = 0.0003). The overall median duration of first stent placement was 64 days, IQR 32 – 110 days. The overall migration rate was 35.5% (11/31). The anticipated migration rate was 60% (9/15); the unanticipated migration rate was 18.2% (2/11) (p = 0.051). All 11 of the migrated stents were retrieved endoscopically without complication. 9.7% (3/31) of patients reported self-limited sore throat or chest pain within 24-hours of stent placement. All 3 patients were managed conservatively without need for narcotic analgesics, hospitalization, or repeat endoscopy. No other complications occurred. Conclusions: The direct endoscopic placement of sccSEMS in patients presenting with severe malignant dysphagia significantly improved dysphagia scores, provided excellent durability, and resulted in no major complications. No significant financial relationships to disclose.
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Affiliation(s)
- S. Kucera
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - C. L. Harris
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. Vignesh
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. Klapman
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. S. Barthel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
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Chuong MD, Shridhar R, Patel M, Klapman J, Barthel JS, Vignesh S, Hodul PJ, Springett GM, Malafa MP, Hoffe SE. Neoadjuvant stereotactic body radiation therapy (SBRT) for borderline resectable pancreas cancer: Moffitt Cancer Center initial experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.302] [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: 11/20/2022] Open
Abstract
302 Background: Our institution has reported a strategy of using neoadjuvant GTX (gemcitabine, docetaxel, and capecitabine) chemotherapy followed by 5FU-based intensity-modulated radiation therapy (IMRT) for borderline resectable pancreas cancer. We now report our early experience with induction chemotherapy followed by stereotactic body radiation therapy (SBRT). Methods: This retrospective review evaluates our initial 5 fraction SBRT experience in 15 patients following induction chemotherapy for borderline resectable pancreatic cancer. Staging included pancreatic protocol CT, endoscopic ultrasound, and PET/CT scan. Induction regimens consisted of GTX for 3 cycles in 12 patients and gemcitabine alone in 3. Daily SBRT was delivered to the pancreas at least 1 week after completing systemic chemotherapy. Endoscopically implanted fiducial markers and daily cone beam CT were used for image guidance. Treatment was delivered on a Varian Trilogy unit using 6-15 MV photons. Doses were selected based on dose painting the portion of tumor adjacent to the vasculature to a higher dose while meeting normal tissue constraints. The entire gross tumor received a dose of 5-6 Gy per fraction while the portion of the tumor adjacent to the vasculature resulting in the borderline designation received up to 8 Gy per fraction. Patients were re-imaged 3-4 weeks after SBRT for consideration of surgery. Results: There were no acute or late grade 3 toxicities. At the time of this analysis, not all treated patients have reached the restaging time point, but 9 of 15 (60%) were candidates for resection. Six patients have gone to resection with negative margins and without any increased complications. Two patients were found to have disease surrounding the vasculature preventing resection. One patient had cardiac issues at surgery and resection was aborted. One patient was explored and found to have liver metastases. Conclusions: Integration of SBRT in conjunction with systemic therapy is well-tolerated and appears to facilitate margin-negative resection in borderline resectable pancreatic cancer. No significant financial relationships to disclose.
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Affiliation(s)
- M. D. Chuong
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - R. Shridhar
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - M. Patel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. Klapman
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. S. Barthel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. Vignesh
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - P. J. Hodul
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - G. M. Springett
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - M. P. Malafa
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. E. Hoffe
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
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Shridhar R, Chuong MD, Hoffe SE, Biagioli M, Almhanna K, Weber J, Kucera S, Vignesh S, Barthel JS, Meredith K. Effect of neoadjuvant dose-painted IMRT to 56 Gy for locally advanced esophageal cancer on outcomes. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.144] [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: 11/20/2022] Open
Abstract
144 Background: Standard of care chemoradiation doses of 50.4 Gy for locally advanced (T3, T4, and/or node positive) esophageal cancer is associated with a pathologic complete response (pCR) rate of 40% at our institution. We evaluated whether pCR would be increased with 4D CT planning scans, intensity-modulated radiation therapy (IMRT) delivery with motion management, and dose painting to 56 Gy in 28 fractions. Methods: This retrospective review of 9 patients who have undergone esophagogastrectomy (7 adenocarcinoma, 2 squamous cell) evaluates our initial experience with neoadjuvant dose painted IMRT to 56 Gy. Pre-treatment workup included PET scan, chest and abdomen CT scans, endoscopic ultrasound (EUS), and EUS-guided fiducial marker placement. Fiducial markers were placed superior and inferior to the gross endoscopic tumor volume to facilitate analysis of tumor motion with 4D CT simulation. Internal target volumes (ITVs) of gross disease were generated to account for motion. Once the GITV was generated, a clinical target volume (CTV) encompassing a 3-4 cm superior margin and 3-4 cm distal margin was contoured. Two planning target volumes (PTVs) were created for dose painting: PTV 50.4 and PTV 56 Gy in 28 fractions. IMRT was utilized for all patients with either a weight belt or with compensators. Concurrent cisplatin and continuous infusion 5-FU were delivered with radiotherapy and patients were restaged 3-6 weeks after completion for response evaluation. Results: Treatment was well tolerated without any grade 3 acute morbidity. Surgical complications were not increased in this group overall. However, there was 1 patient with a chyle leak and radiation pneumonitis, but her case was complicated by having a remote history of radiotherapy. Six of the 9 treated patients were found to have a pCR (4 adenocarcinoma, 2 squamous cell). Two had a near CR with < 5 mm of residual disease. One additional patient with an initial bulky T4N1 tumor had 9 mm of viable tumor. Conclusions: With motion management, dose painted IMRT to 56 Gy is feasible and may be associated with improved rates of pathologic complete or near complete response. No significant financial relationships to disclose.
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Affiliation(s)
- R. Shridhar
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - M. D. Chuong
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. E. Hoffe
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - M. Biagioli
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - K. Almhanna
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. Weber
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. Kucera
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - S. Vignesh
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - J. S. Barthel
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
| | - K. Meredith
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
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Vignesh S, Parihar HH. O36 Comparison of supervised group physiotherapy with unsupervised individual physiotherapy in the management of spondyloarthropathy. Indian Journal of Rheumatology 2010. [DOI: 10.1016/s0973-3698(10)60611-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Fernandez D, Hoffe S, Dilling T, Vignesh S, Barthel J, Klapman J, Leuthold S, Zhang G, Feygelman V, Shridhar R. Effect of Abdominal Compression on Respiratory Motion of Esophageal Cancers Measured with 4DCT after EUS-guided Fiducial Marker Placement. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kumarasamy P, Vignesh S, Arthur Jam R, Muthukumar K, Rajendran A. Enumeration and Identification of Pathogenic Pollution Indicators in Cauvery River, South India. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/jm.2009.540.549] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Masilamoni JG, Jesudason EP, Dhandayuthapani S, Ashok BS, Vignesh S, Jebaraj WCE, Paul SFD, Jayakumar R. The neuroprotective role of melatonin against amyloid beta peptide injected mice. Free Radic Res 2008; 42:661-73. [PMID: 18654881 DOI: 10.1080/10715760802277388] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Widespread cerebral deposition of a 40-42 amino acid peptide called amyloid beta peptide (A beta) in the form of amyloid fibrils is one of the most prominent neuropathologic features of Alzheimer's disease (AD). The clinical study provides evidence that accumulation of protofibrils due to the Arctic mutation (E22G) causes early AD onset. Melatonin showed beneficial effects in an AD mouse model. Mice were divided into four different groups (n=8 per group): (i) control group, (ii) scrambled A beta-injected group, (iii) A beta protofibril-injected group and (iv) melatonin-treated group. A single dose of (5 microg) A beta protofibril was administered to the A beta protofibril-injected and melatonin-treated groups via intracerebroventricular injections. The results demonstrate that melatonin treatment significantly reduces A beta protofibril-induced reactive oxygen species (ROS) production, intracellular calcium levels and acetylcholinesterase activity in the neocortex and hippocampus regions. Based on these findings it is suggested that melatonin therapy might be a useful treatment for AD patients.
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Affiliation(s)
- J Gunasingh Masilamoni
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai, India
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Gunasingh MJ, Philip JE, Ashok BS, Kirubagaran R, Jebaraj WCE, Davis GDJ, Vignesh S, Dhandayuthapani S, Jayakumar R. Melatonin prevents amyloid protofibrillar induced oxidative imbalance and biogenic amine catabolism. Life Sci 2008; 83:96-102. [DOI: 10.1016/j.lfs.2008.05.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2008] [Revised: 04/14/2008] [Accepted: 05/09/2008] [Indexed: 01/09/2023]
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Jesudason EP, Masilamoni JG, Ashok BS, Baben B, Arul V, Jesudoss KS, Jebaraj WCE, Dhandayuthapani S, Vignesh S, Jayakumar R. Inhibitory effects of short-term administration of dl-α-lipoic acid on oxidative vulnerability induced by Aβ amyloid fibrils (25–35) in mice. Mol Cell Biochem 2008; 311:145-56. [DOI: 10.1007/s11010-008-9705-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2007] [Accepted: 01/10/2008] [Indexed: 12/31/2022]
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Masilamoni JG, Vignesh S, Kirubagaran R, Jesudason EP, Jayakumar R. The neuroprotective efficacy of alpha-crystallin against acute inflammation in mice. Brain Res Bull 2005; 67:235-41. [PMID: 16144660 DOI: 10.1016/j.brainresbull.2005.07.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2005] [Accepted: 07/07/2005] [Indexed: 01/30/2023]
Abstract
Acute inflammation activates macrophages or monocytes and subsequently releases several inflammatory cytokines and reactive oxygen and nitrogen species. These proinflammatory cytokines activate astrocytes and trigger neurodegenerative diseases. In this work, we chose to address the mechanistic aspects of alpha-crystallin's protective function in inflammation-triggered neurotoxicity in mice. Alpha-crystallin, a lens structural protein, comprising alpha-A and alpha-B subunits is an ubiquitous molecular chaperone, which have been shown to reduce reactive oxygen species (ROS) production and enhance cellular glutathione level in the acute inflammation-induced mice. Results show that the proinflammatory cytokines such as interleukin-1alpha (IL-1alpha) and tumor necrosis factor-alpha (TNF-alpha) and nitric oxide (NO) were significantly high (P<0.05) in the plasma, liver, cortex and hippocampus of inflammation-induced mice when compared to control. Alpha-crystallin pretreatment prevents inflammation-induced cytokines and NO production. In addition, a significant (P<0.05) reduction of dopamine (DA), 5-hydroxytryptamine (5-HT) and norepinephrine (NE) was also observed in the inflammation-induced mice. Nevertheless, their metabolites, such as 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA) and 5-hydroxyindole acetic acid (5-HIAA) increased significantly (P<0.05) as compared to control. The results indicate that alpha-crystallin pretreatment controls the inflammation-induced DA, 5-HT and NE catabolism and suggest that alpha-crystallin has the potential to act as an anti-inflammatory agent in the neuroprotective processes.
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Affiliation(s)
- J Gunasingh Masilamoni
- Bio-Organic and Neurochemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600020, Tamil Nadu, India
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