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Sreedhar SS, Rajalakshmi AR, Nagarajan S, Easow JM, Rajendran P. Comparison of preoperative prophylaxis with povidone-iodine (5%) and moxifloxacin (0.5%) versus povidone-iodine (5%) alone: a prospective study from India. Int Ophthalmol 2024; 44:48. [PMID: 38337066 DOI: 10.1007/s10792-024-03025-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/11/2024] [Indexed: 02/12/2024]
Abstract
PURPOSE To compare the effect of povidone-iodine (PI) 5% and moxifloxacin 0.5% solutions versus PI 5% solution alone on the conjunctival bacterial flora. METHODOLOGY This is a comparative study in which the study population comprised adult patients scheduled for elective small incision cataract surgery. The eye to be operated (control eye) received topical moxifloxacin 0.5% drops 4 times, 1 day before surgery and 2 applications on the day of surgery. As placebo, the contralateral eye (study eye) received saline 0.90% drops as per the same schedule. Before surgery, on table, PI 5% was instilled in the conjunctival sac in both eyes. Conjunctival swabs were taken before initiation of therapy and 3 min after instillation of PI. RESULTS Of the 96 pairs of eyes included in the study, conjunctival cultures before prophylaxis were similar between the two groups (p = 0.31), with 54 samples (56%) of the study group and 49 (51%) of the control group showing growth. With positive cultures reducing to 7 (14%) in the study group and 8 (16%) in the control group, both the prophylaxis methods appeared equally efficacious (p = 0.79). Both the groups showed a significant reduction in positive cultures following prophylaxis (p < 0.0001). CONCLUSIONS PI 5% alone as preoperative prophylaxis was as effective as its combination therapy with moxifloxacin 0.5% in the reduction in conjunctival bacterial colonization.
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Affiliation(s)
- Sanjana S Sreedhar
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
| | - A R Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India.
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
| | - Joshy M Easow
- Department of Microbiology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
| | - Prabha Rajendran
- Department of Microbiology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
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Shaikh ZM, Rajalakshmi AR, Nagarajan S. Knowledge and awareness of COVID-19-associated mucormycosis among doctors in a tertiary care center. Indian J Ophthalmol 2023; 71:2309-2310. [PMID: 37202990 PMCID: PMC10391457 DOI: 10.4103/ijo.ijo_2740_22] [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: 05/20/2023] Open
Affiliation(s)
- Zeba Muzammil Shaikh
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (SBV) Deemed to be University, Puducherry, India
| | - A R Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (SBV) Deemed to be University, Puducherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (SBV) Deemed to be University, Puducherry, India
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Alekhya C, Rajalakshmi AR, Nagarajan S. Ixodidae - A rare cause of blepharitis. Trop Parasitol 2023; 13:63-65. [PMID: 37415755 PMCID: PMC10321583 DOI: 10.4103/tp.tp_92_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 04/15/2022] [Accepted: 01/25/2023] [Indexed: 07/08/2023] Open
Abstract
Hard ticks are mainly responsible for more "tick-borne" diseases in humans when compared to soft ticks. Tick infestation of ocular and periocular tissues is rare. We report the case of a 61-year-old male with left upper eyelid edema with erythema and live parasite on the lid margin.
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Affiliation(s)
- C. Alekhya
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
| | - A. R. Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Puducherry, India
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Sonthi VK, Nagarajan S, Krishnaraj N. An Intelligent Telugu Handwritten Character Recognition using Multi-Objective Mayfly Optimization with Deep Learning Based DenseNet Model. ACM T ASIAN LOW-RESO 2022. [DOI: 10.1145/3520439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Handwritten character recognition process has gained significant attention among research communities due to the application in assistive technologies for visually impaired people, human robot interaction, automated registry for business document, and so on. Handwritten character recognition of Telugu language is hard owing to the absence of massive dataset and trained convolution neural network (CNN). Therefore, this paper introduces an intelligent Telugu character recognition using multi-objective mayfly optimization with deep learning (MOMFO-DL) model. The proposed MOMFO-DL technique involves DenseNet-169 model as a feature extractor to generate a useful set of feature vectors. Moreover, functional link neural network (FLNN) is used as a classification model to recognize and classify the printer characters. The design of MOMFO technique for the parameter optimization of DenseNet model and FLNN model shows the novelty of the work. The use of MOMFO technique helps to optimally tune the parameters in such a way that the overall performance can be improved. The extensive experimental analysis takes place on benchmark datasets and the outcomes are examined with respect to different measures. The experimental results pointed out the supremacy of the MOMFO technique over the recent state of art methods.
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Affiliation(s)
| | - S. Nagarajan
- Associate Professor, Department of CSE, FEAT, Annamalai University
| | - N. Krishnaraj
- Associate Professor, School of Computing, SRM Institute of Science & Technology
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Vijayabaskaran S, B. D, Damodaran V, Nagarajan S. Association between Lipid Levels and Short-Term Heart Rate Variability (HRV) In Type 2 Diabetes. Egyptian Academic Journal of Biological Sciences C, Physiology and Molecular Biology 2022. [DOI: 10.21608/eajbsc.2022.213921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Paul A, Sreedhar S, Nagarajan S, Naggalakshmi VS. A sunkissed lens. TNOA J Ophthalmic Sci Res 2022. [DOI: 10.4103/tjosr.tjosr_102_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Paul A, Nagarajan S. Making the most of limited resources in wet-lab training during COVID-19. Indian J Ophthalmol 2021; 70:351-352. [PMID: 34937295 PMCID: PMC8917605 DOI: 10.4103/ijo.ijo_1996_21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Anujeet Paul
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Sri Balaji Vidyapeeth, Pondicherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Sri Balaji Vidyapeeth, Pondicherry, India
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Bermingham WH, Bhogal R, Nagarajan S, Mutlu L, El-Shabrawy RM, Madhan R, Maheshwari UM, Murali M, Kudagammana ST, Shrestha R, Sumantri S, Christopher DJ, Mahesh PA, Dedicoat M, Krishna MT. 'Practical management of suspected hypersensitivity reactions to anti-tuberculosis drugs.'. Clin Exp Allergy 2021; 52:375-386. [PMID: 34939251 DOI: 10.1111/cea.14084] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 12/07/2021] [Accepted: 12/09/2022] [Indexed: 11/28/2022]
Abstract
Tuberculosis (TB) is the commonest cause of death by a single infectious agent globally and ranks amongst the top ten causes of global mortality. The incidence of TB is highest in Low-Middle Income countries (LMICs). Prompt institution of, and compliance with, therapy are cornerstones for a favourable outcome in TB and to mitigate the risk of multiple drug resistant (MDR)-TB, which is challenging to treat. There is some evidence that adverse drug reactions (ADRs) and hypersensitivity reactions (HSRs) to anti-TB drugs occur in over 60% and 3-4% of patients respectively. Both ADRs and HSRs represent significant barriers to treatment adherence and are recognised risk factors for MDR-TB. HSRs to anti-TB drugs are usually cutaneous and benign, occur within few weeks after commencement of therapy and are likely to be T-cell mediated. Severe and systemic T-cell mediated HSRs and IgE mediated anaphylaxis to anti-TB drugs are relatively rare, but important to recognise and treat promptly. T-cell mediated HSRs are more frequent amongst patients with co-existing HIV infection. Some patients develop multiple sensitisation to anti-TB drugs. Whilst skin tests, patch tests and in vitro diagnostics have been used in the investigation of HSRs to anti-TB drugs, their predictive value is not established, they are onerous, require specialist input of an allergist and are resource-dependent. This is compounded by the global, unmet demand for allergy specialists, particularly in low income countries (LICs) / LMICs and now the challenging circumstances of the SARS-CoV-2 pandemic. This narrative review provides a critical analysis of the limited published evidence on this topic and proposes a cautious and pragmatic approach to optimise and standardise the management of HSRs to anti-TB drugs. This includes clinical risk stratification and a dual strategy involving sequential re-challenge and rapid drug desensitisation. Furthermore, a concerted international effort is needed to generate real-time data on ADRs, HSRs, safety and clinical outcomes of these interventions.
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Affiliation(s)
- W H Bermingham
- Department of Allergy & Immunology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - R Bhogal
- Department of Pharmacy, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - S Nagarajan
- Department of Allergy and Immunology, Mallige Hospital, Bangalore, India
| | - L Mutlu
- Department of Allergy & Immunology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | | | - R Madhan
- Department of Pharmacy Practice, JSS College of Pharmacy, JSS AHER, Mysuru, India
| | - U M Maheshwari
- Department of Respiratory Medicine, St Johns Medical College, Bengaluru, India
| | - M Murali
- Division of Allergy and Clinical Immunology, Department of Medicine, Massachusetts General hospital, Boston, MA, 02114, USA
| | - S T Kudagammana
- Faculty of Medicine, University of Peradeniya, Honorary Consultant Paediatrician, Teaching hospital, Peradeniya, Sri Lanka
| | - R Shrestha
- Departments of Clinical Pharmacology, Dhulikhel Hospital, Kathmandu University Hospital, Nepal
| | - S Sumantri
- Department of Internal Medicine, Universitas Pelita Harapan, Siloam Academic Hospital Lippo Village, Tangerang, Banten, Indonesia
| | - D J Christopher
- Department of Pulmonary Medicine, Christian Medical College, Vellore, India
| | - P A Mahesh
- Department of Respiratory Medicine, JSS Medical College, JSSAHER, Mysuru, India
| | - M Dedicoat
- Department of Infectious Diseases and Tropical Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - M T Krishna
- Department of Allergy & Immunology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Institute of Immunology and Immunotherapy, University of Birmingham, UK
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Paul A, Sainath D, Nagarajan S, Rajalakshmi AR. Practical problems and possible work-arounds for indirect ophthalmoscopy with personal protective equipment. Indian J Ophthalmol 2021; 69:3798. [PMID: 34827062 PMCID: PMC8837363 DOI: 10.4103/ijo.ijo_1473_21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Anujeet Paul
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - Dipika Sainath
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - A R Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
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Paul A, Sainath D, Nagarajan S, Rajalakshmi AR. Two brutal waves of COVID-19: Where does ophthalmology residency training stand? Indian J Ophthalmol 2021; 69:2547. [PMID: 34427269 PMCID: PMC8544049 DOI: 10.4103/ijo.ijo_1832_21] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Anujeet Paul
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - Dipika Sainath
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
| | - A R Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
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Kumar M, Murugkar HV, Nagarajan S, Tosh C, Patil S, Nagaraja KH, Rajukumar K, Senthilkumar D, Dubey SC. Experimental infection and pathology of two highly pathogenic avian influenza H5N1 viruses isolated from crow and chicken in house crows (Corvus splendens). Acta Virol 2021; 64:325-330. [PMID: 32985206 DOI: 10.4149/av_2020_306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We investigated the experimental infection of two highly pathogenic avian influenza H5N1 viruses isolated from crow (A/crow/Assam/142119/2008) and chicken (A/chicken/Sikkim/151466/2009) in house crows (Corvus splendens). Both viruses caused infection in crows, where four out of six and three out of six crows succumbed to H5N1 infection within 11 days post challenge by crow and chicken viruses, respectively. The major clinical signs in crows were wing paralysis, circling and torticollis. The virus shedding detected from swabs was not persistent in both crow nor chicken viruses. Both viruses were isolated more frequently from oral swabs than from cloacal swabs. Both virus strains were isolated from brain, lungs, heart, liver, pancreas, spleen, large intestines of crows that succumbed to H5N1 infection. The surviving birds seroconverted in response to H5N1 virus infection. Microscopically, both viruses caused coagulative necrosis in pancreas and kidneys. Brain showed gliosis and neuronal degeneration. This experimental study highlights that crows could be infected with H5N1 viruses from different hosts with minor differences in pathogenicity. Therefore, it is imperative to carry out surveillance of highly pathogenic avian influenza H5N1 virus in synanthropic birds along with biosecurity measures to mitigate the H5N1 spread in poultry population. Keywords: chicken virus; crow virus; highly pathogenic avian influenza; house crows.
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Shivakumar K, Rajalakshmi A, Jha KN, Nagarajan S, Srinivasan A, Lokesh Maran A. Serum magnesium in diabetic retinopathy: the association needs investigation. Ther Adv Ophthalmol 2021; 13:25158414211056385. [PMID: 34901747 PMCID: PMC8655827 DOI: 10.1177/25158414211056385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 10/08/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Magnesium has an essential role in glucose metabolism, and hypomagnesaemia is common in diabetes mellitus. However, the relationship between serum magnesium and diabetic retinopathy is poorly understood. AIM To determine the association between serum magnesium levels and retinopathy in type 2 diabetic patients with normal renal function and to correlate it with severity of retinopathy. METHODS This cross-sectional observational study was conducted in a semi-urban tertiary-care teaching hospital. Clinicodemographic profile and serum magnesium levels were determined in patients with type 2 diabetes mellitus (DM) with (group 1) and without (group 2) retinopathy. Serum magnesium levels were correlated with the presence and severity of retinopathy. RESULTS Of 104 type 2 DM patients, 50 had retinopathy. Younger age, longer duration of disease and poorer glycaemic control (p < 0.05) were found to be associated with retinopathy. The mean serum magnesium levels in patients with retinopathy and those without retinopathy were 1.63 ± 0.30 mg/dL and 1.76 ± 0.22 mg/dL, respectively (p = 0.029). Reduced serum magnesium was associated with elevated fasting sugars (p = 0.019) and female gender (p = 0.037). On comparative analysis of patients with sight-threatening diabetic retinopathy (STDR), non-STDR and no retinopathy by ANOVA test, patients with STDR had significantly lower serum magnesium (1.55 ± 0.33 mg/dL) (p = 0.031). CONCLUSION Serum magnesium levels were lower in patients with diabetic retinopathy. Patients with STDR had lower serum magnesium compared with those without STDR. SUMMARY Serum magnesium, studied extensively for its role in glucose metabolism, was found to be lower in patients with diabetic retinopathy compared with those without retinopathy. Sight-threatening diabetic retinopathy had significantly lower levels of serum magnesium.
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Affiliation(s)
- Koushik Shivakumar
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry, India
| | - A.R. Rajalakshmi
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry UT 607402, India
| | - Kirti Nath Jha
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry, India
| | - A.R. Srinivasan
- Department of Biochemistry, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry, India
| | - A. Lokesh Maran
- Department of Community Medicine, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth, Pondicherry, India
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Parvathy P, Dheepika R, Abhijnakrishna R, Imran P, Nagarajan S. Fluorescence quenching of triarylamine functionalized phenanthroline-based probe for detection of picric acid. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112780] [Citation(s) in RCA: 3] [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: 12/11/2022]
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Kumar N, Bhatia S, Pateriya AK, Sood R, Nagarajan S, Murugkar HV, Kumar S, Singh P, Singh VP. Label-free peptide nucleic acid biosensor for visual detection of multiple strains of influenza A virus suitable for field applications. Anal Chim Acta 2019; 1093:123-130. [PMID: 31735205 DOI: 10.1016/j.aca.2019.09.060] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/21/2019] [Accepted: 09/23/2019] [Indexed: 01/10/2023]
Abstract
Accurate and rapid diagnosis of Influenza A viruses (IAVs) is challenging because of multiple strains circulating in humans and animal populations, and the emergence of new strains. In this study, we demonstrate a simple and rapid strategy for visual detection of multiple strains of IAVs (H1 to H16 subtypes) using peptide nucleic acid (PNA) as a biosensor and unmodified gold nanoparticles (AuNPs) as a reporter. The design principle of the assay is based on the color change on account of free PNA-induced aggregation of AuNPs in the presence of non-complementary viral RNA sequence and vice-versa. The assay could detect IAV RNA with a visual limit of detection of 2.3 ng. The quantification of RNA with a considerable accuracy on a simple spectrophotometer was achieved on plotting the PNA-induced colorimetric changes (absorption ratio of A640/A520) in the presence of a varying concentration of complementary RNA. As a proof-of-concept, the visual assay was validated on 419 avian clinical samples and receiver operating characteristic (ROC) curve analysis showed a high diagnostic specificity (96.46%, 95% CI = 93.8 to 98.2) and sensitivity (82.41%, 95% CI = 73.9 to 89.1) when RT-qPCR was used as reference test. Hence, the simplicity, rapidity, and universality of this strategy make it a potential candidate visual assay for clinical diagnosis and surveillance of IAVs, especially in the resource-limited settings. The proposed strategy establishes new avenues for developing a simple and rapid diagnostic system for viral infections and biomolecules.
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Affiliation(s)
- Naveen Kumar
- Diagnostics & Vaccines Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India.
| | - Sandeep Bhatia
- Diagnostics & Vaccines Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
| | - Atul Kumar Pateriya
- Diagnostics & Vaccines Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
| | - Richa Sood
- Diagnostics & Vaccines Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
| | - S Nagarajan
- Avian Diseases Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
| | - Harshad V Murugkar
- Avian Diseases Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
| | - Satish Kumar
- Central Instrumentation Facility- Bioengineering, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122, India
| | - Praveen Singh
- Central Instrumentation Facility- Bioengineering, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122, India; Biophysics and Electron Microscopy Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122, India
| | - Vijendra Pal Singh
- Diagnostics & Vaccines Section, ICAR-National Institute of High Security Animal Diseases, Bhopal, 462022, India
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Abstract
Purpose: Pseudoexfoliation syndrome (PXS) is an age related microfibrillopathy characterized by deposition of whitish flaky material over various ocular tissues. PXS eyes are known to have thinner corneas and thus can lead to an underestimation in intraocular pressure measurement. The purpose of this study was to find if there is any variation in central corneal thickness and intraocular pressure in PXS eyes and if there was any relationship between them. Methods: A prospective observational study was done on 141 eyes of 85 patients with PXS without glaucoma between November 2015 to April 2017 in the department of Ophthalmology in a tertiary hospital. CCT and IOP were measured by a handheld ultrasonic pachymeter (DGH Technology INC. Pachette 2, USA) and Goldmann applanation tonometer respectively at 4 different times during office hours. Results: A significant reduction of about 10 μm in mean CCT and 1.4 mmHg in mean IOP was noted over the 4 sessions which was statistically significant (P < 0.001). A significant correlation exists between IOP and CCT in PXS eyes at all times during the day (P < 0.001). Conclusion: The CCT measurements show significant thinning throughout the day, similar drop in IOP was also noted. Our study shows that there is a significant correlation between diurnal variation of CCT and IOP. Hence, it is prudent to measure CCT along with IOP at all times.
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Affiliation(s)
- Zeeshan Syed
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - Krishnagopal Srikanth
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - Swathi Nagarajan
- Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
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Meenakshisundaram S, Gopalakrishnan M, Nagarajan S, Sarathi N, Sumathi P. Kinetics and mechanism of the oxidation of alkenes by chromium(VI) in the presence of complexing agents. Journal of Chemical Research 2019. [DOI: 10.3184/0308234054497173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The catalytic activities of 2,2′-bipyridyl (bipy) and oxalic acid (Oxa) in the HCrO4– oxidation of some substituted trans-cinnamic acids have been investigated in acidic solutions. The Cr(VI)–bipy and Cr(VI)–Oxa complexes are believed to be the probable reactive electrophiles in this redox process. The kinetic data reveal that electron-releasing groups enhance the reactivity to a significant extent while the electron-withdrawing ones reduce the rate marginally. It appears that the mechanism of bipy/Oxa catalysed chromium(VI) oxidation of unsaturated systems to the corresponding cleavage products involves an electrophilic attack of the reactive complex at the C–C double bond. The formation of a ternary complex as an intermediate is envisaged to describe the redox process. In this paper, we also report on the kinetic form of the oxidation of trans-stilbene to methyl 3-hydroxy-2,3-diphenylpropanoate. The mechanistic pathway has been determined based on the kinetic behaviour and the product assignment.
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Affiliation(s)
| | - M. Gopalakrishnan
- Department of Chemistry, Annamalai University, Annamalainagar – 608 002, India
| | - S. Nagarajan
- Department of Chemistry, Annamalai University, Annamalainagar – 608 002, India
| | - N. Sarathi
- Department of Chemistry, Annamalai University, Annamalainagar – 608 002, India
| | - P. Sumathi
- Department of Chemistry, Annamalai University, Annamalainagar – 608 002, India
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Manian DV, Nagarajan S, Vastardi M. CLINICAL PREDICTORS OF OBESITY AND ALLERGIC RHINITIS SEASONALITY IN AN INNER-CITY PEDIATRIC COHORT. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.206] [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]
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Lowrence RC, Ramakrishnan A, Sundaramoorthy NS, Shyam A, Mohan V, Subbarao HMV, Ulaganathan V, Raman T, Solomon A, Nagarajan S. Norfloxacin salts of carboxylic acids curtail planktonic and biofilm mode of growth in ESKAPE pathogens. J Appl Microbiol 2018; 124:408-422. [PMID: 29178633 DOI: 10.1111/jam.13651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 09/14/2017] [Accepted: 11/17/2017] [Indexed: 12/19/2022]
Abstract
AIMS To enhance the antimicrobial and antibiofilm activity of norfloxacin against the planktonic and biofilm mode of growth in ESKAPE pathogens using chemically modified norfloxacin salts. METHODS AND RESULTS Antimicrobial testing, synergy testing and time-kill curve analysis were performed to evaluate antibacterial effect of norfloxacin carboxylic acid salts against ESKAPE pathogens. In vivo efficacy to reduce bacterial bioburden was evaluated in zebrafish infection model. Crystal violet assay and live-dead staining were performed to discern antibiofilm effect. Membrane permeability, integrity and molecular docking studies were carried out to ascertain the mechanism of action. The carboxylic acid salts, relative to parent molecule norfloxacin, displayed two- to fourfold reduction in minimum inhibitory concentration against Staphylococcus aureus and Pseudomonas aeruginosa, in addition to displaying potent bacteriostatic effect against certain members of ESKAPE pathogens. In vivo treatments revealed that norfloxacin tartrate (SRIN2) reduced MRSA bioburden by greater than 1 log fold relative to parent molecule in the muscle tissue. In silico docking with gyrA of S. aureus showed increased affinity of SRIN2 towards DNA gyrase. The enhanced antibacterial effect of norfloxacin salts could be partially accounted by altered membrane permeability in S. aureus and perturbed membrane integrity in P. aeruginosa. Antibiofilm studies revealed that SRIN2 (norfloxacin tartrate) and SRIN3 (norfloxacin benzoate) exerted potent antibiofilm effect particularly against Gram-negative ESKAPE pathogens. The impaired colonization of both S. aureus and P. aeruginosa due to improved norfloxacin salts was further supported by live-dead imaging. CONCLUSION Norfloxacin carboxylic acid salts can act as potential alternatives in terms of drug resensitization and reuse. SIGNIFICANCE AND IMPACT OF THE STUDY Our study shows that carboxylic acid salts of norfloxacin could be effectively employed to treat both planktonic- and biofilm-based infections caused by select members of ESKAPE pathogens.
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Affiliation(s)
- R C Lowrence
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.,Center for Research on Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - A Ramakrishnan
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - N S Sundaramoorthy
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - A Shyam
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - V Mohan
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - H M V Subbarao
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - V Ulaganathan
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - T Raman
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - A Solomon
- Department of Chemistry, School of Engineering, Dayananda Sagar University, Bangalore, Karnataka, India
| | - S Nagarajan
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.,Center for Research on Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
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Nagarajan S, Narmada MP, Kavitha N. Detecting ocular surface changes associated with soft contact lens wear using conjunctival impression cytology. J Clin Ophthalmol Res 2018. [DOI: 10.4103/jcor.jcor_13_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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21
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Khurshid F, Jeyavelan M, Takahashi K, Leo Hudson MS, Nagarajan S. Aryl fluoride functionalized graphene oxides for excellent room temperature ammonia sensitivity/selectivity. RSC Adv 2018; 8:20440-20449. [PMID: 35541670 PMCID: PMC9080835 DOI: 10.1039/c8ra01818a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/29/2018] [Indexed: 11/21/2022] Open
Abstract
Herein, we report the covalent functionalization of graphene oxide (GO) through ‘‘click’’ reaction and its applications towards ammonia sensing. This inimitable method of covalent functionalization involves linking GO with azide moiety and click coupling of different derivatives of aryl propargyl ether, which enhances the sensitivity towards ammonia. The functionalized GO were characterized using NMR, XRD, SEM, FT-IR, Raman, UV-Vis, TGA and DSC. Compared to pristine GO, the GO functionalized with Ar samples (GO-Ar) exhibit excellent room temperature ammonia sensing properties with good response/recovery characteristics. It has been observed that 2,3-difluoro and 2,3,4-trifluoro substituted aryl propargyl ether functionalized GO (GO-Ar2 and GO-Ar3) shows superior ammonia sensing with response/recovery of 63%/∼90% and 60%/100%, respectively at 20 ppm. The GO-Ar3 exhibits high sensitivity towards ammonia at 20–100 ppm. Computational studies supports the high sensitivity of GO-Ar towards ammonia due to its high adsorption energy. Covalent functionalization of graphene oxide (GO) through ‘‘click’’ reaction and its applications towards ammonia sensing has been demonstrated.![]()
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Affiliation(s)
| | - M. Jeyavelan
- Department of Physics
- Central University of Tamil Nadu
- India
| | - Keisuke Takahashi
- Center for Materials Research By Information Integration (CMI2)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | | | - S. Nagarajan
- Department of Chemistry
- Central University of Tamil Nadu
- India
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22
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Pathak AP, Murugkar HV, Nagarajan S, Sood R, Tosh C, Kumar M, Athira CK, Praveen A. Survivability of low pathogenic (H9N2) avian influenza virus in water in the presence of Atyopsis moluccensis (Bamboo shrimp). Zoonoses Public Health 2017; 65:e124-e129. [PMID: 29115743 DOI: 10.1111/zph.12420] [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] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Indexed: 11/30/2022]
Abstract
Low pathogenic avian influenza virus (LPAIV) exhibits an ecological climax with the aquatic ecosystem. The most widely prevalent subtype of LPAIV is H9N2. Wild aquatic birds being the natural reservoirs and ducks, the "Trojan horses" for Avian Influenza Virus (AIV), can contaminate the natural water bodies inhabited by them. The virus can persist in the contaminated water from days to years depending upon the environmental conditions. Various aquatic species other than ducks can promote the persistence and transmission of AIV; however, studies on the role of aquatic fauna in persistence and transmission of avian influenza virus are scarce. This experiment was designed to evaluate the survivability of H9N2 LPAIV in water with and without Atyopsis moluccensis (bamboo shrimp) for a period of 12 days. The infectivity and amount of virus in water were calculated and were found to be significantly higher in water with A. moluccensis than in water without A. moluccensis. The study also showed that A. moluccensis can accumulate the virus mechanically which can infect chicken eggs up to 11 days. The virus transmission potential of A. moluccensis requires further studies.
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Affiliation(s)
- A P Pathak
- Department of Veterinary Public Health and Epidemiology, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - H V Murugkar
- Indian Council of Agricultural Research- National Institute of High Security Animal Diseases (ICAR-NIHSAD), Bhopal, Madhya Pradesh, India
| | - S Nagarajan
- Indian Council of Agricultural Research- National Institute of High Security Animal Diseases (ICAR-NIHSAD), Bhopal, Madhya Pradesh, India
| | - R Sood
- Indian Council of Agricultural Research- National Institute of High Security Animal Diseases (ICAR-NIHSAD), Bhopal, Madhya Pradesh, India
| | - C Tosh
- Indian Council of Agricultural Research- National Institute of High Security Animal Diseases (ICAR-NIHSAD), Bhopal, Madhya Pradesh, India
| | - M Kumar
- Indian Council of Agricultural Research- National Institute of High Security Animal Diseases (ICAR-NIHSAD), Bhopal, Madhya Pradesh, India
| | - C K Athira
- Division of Veterinary Public Health, Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - A Praveen
- Veterinary Dispensary, Korukollu, Krishna District, Andhra Pradesh, India
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Vasudevan G, Vanamayya PR, Nagarajan S, Rajukumar K, Suba S, Venketash G, Tosh C, Sood R, Nissly RH, Kuchipudi SV. Infectious dose-dependent accumulation of live highly pathogenic avian influenza H5N1 virus in chicken skeletal muscle-implications for public health. Zoonoses Public Health 2017; 65:e243-e247. [PMID: 28941132 DOI: 10.1111/zph.12406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Indexed: 11/27/2022]
Abstract
Highly pathogenic avian influenza viruses (HPAIV) of H5N1 subtype are a major global threat to poultry and public health. Export of poultry products, such as chicken and duck meat, is a known source for the cross-boundary spread of HPAI H5N1 viruses. Humans get infected with HPAI H5N1 viruses either by close contact with infected poultry or through consumption of fresh/undercooked poultry meat. Skeletal muscle is the largest soft tissue in chicken that has been shown to contain virus during systemic HPAIV infection and supports productive virus infection. However, the time between infection of a chicken with H5N1 virus and presence of virus in muscle tissue is not yet known. Further, it is also not clear whether chicken infected with low doses of H5N1 virus that cause non-fatal subclinical infections continue to accumulate virus in skeletal muscle. We investigated the amount and duration of virus detection in skeletal muscle of chicken experimentally infected with different doses (102 , 103 and 104 EID50 ) of a HPAI H5N1 virus. Influenza viral antigen could be detected as early as 6 hr after infection and live virus was recovered from 48 hr after infection. Notably, chicken infected with lower levels of HPAI H5N1 virus (i.e., 102 EID50 ) did not die acutely, but continued to accumulate high levels of H5N1 virus in skeletal muscle until 6 days post-infection. Our data suggest that there is a potential risk of human exposure to H5N1 virus through meat from clinically healthy chicken infected with a low dose of virus. Our results highlight the need to implement rigorous monitoring systems to screen poultry meat from H5N1 endemic countries to limit the global spread of H5N1 viruses.
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Affiliation(s)
- G Vasudevan
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India.,Poultry Disease Diagnosis and Surveillance Laboratory, Veterinary College and Research Institute Campus, Tamil Nadu Veterinary and Animal Sciences University, Namakkal, Tamil Nadu, India
| | - P R Vanamayya
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - S Nagarajan
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - K Rajukumar
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - S Suba
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - G Venketash
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - C Tosh
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - R Sood
- National Institute of High Security Animal Diseases, Bhopal, Madhya Pradesh, India
| | - R H Nissly
- Animal Diagnostic Laboratory, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, USA
| | - S V Kuchipudi
- Animal Diagnostic Laboratory, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA, USA
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Naresh-Kumar G, Vilalta-Clemente A, Jussila H, Winkelmann A, Nolze G, Vespucci S, Nagarajan S, Wilkinson AJ, Trager-Cowan C. Quantitative imaging of anti-phase domains by polarity sensitive orientation mapping using electron backscatter diffraction. Sci Rep 2017; 7:10916. [PMID: 28883500 PMCID: PMC5589861 DOI: 10.1038/s41598-017-11187-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/14/2017] [Indexed: 11/16/2022] Open
Abstract
Advanced structural characterisation techniques which are rapid to use, non-destructive and structurally definitive on the nanoscale are in demand, especially for a detailed understanding of extended-defects and their influence on the properties of materials. We have applied the electron backscatter diffraction (EBSD) technique in a scanning electron microscope to non-destructively characterise and quantify antiphase domains (APDs) in GaP thin films grown on different (001) Si substrates with different offcuts. We were able to image and quantify APDs by relating the asymmetrical intensity distributions observed in the EBSD patterns acquired experimentally and comparing the same with the dynamical electron diffraction simulations. Additionally mean angular error maps were also plotted using automated cross-correlation based approaches to image APDs. Samples grown on substrates with a 4° offcut from the [110] do not show any APDs, whereas samples grown on the exactly oriented substrates contain APDs. The procedures described in our work can be adopted for characterising a wide range of other material systems possessing non-centrosymmetric point groups.
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Affiliation(s)
- G Naresh-Kumar
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK.
| | - A Vilalta-Clemente
- Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
| | - H Jussila
- Department of Electronics and Nanoengineering, Aalto University, FI-00076, Aalto, Finland
| | - A Winkelmann
- Bruker Nano GmbH, Am Studio 2D, 12489, Berlin, Germany
| | - G Nolze
- BAM, Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205, Berlin, Germany
| | - S Vespucci
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK
| | - S Nagarajan
- Department of Electronics and Nanoengineering, Aalto University, FI-00076, Aalto, Finland
| | - A J Wilkinson
- Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
| | - C Trager-Cowan
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 ONG, UK
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25
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Iyer L, Noack C, Nagarajan S, Woelfer M, Schoger E, Pang S, Kari V, Zafeiriou M, Toischer K, Hasenfuss G, Johnsen S, Zelarayan L. P4479B-catenin/TCF7L2 signaling orchestrates initiation of pathological hypertrophic cardiac remodeling by inducing chromatin modifications. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4479] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Laishram M, Srikanth K, Rajalakshmi AR, Nagarajan S, Ezhumalai G. Microperimetry - A New Tool for Assessing Retinal Sensitivity in Macular Diseases. J Clin Diagn Res 2017; 11:NC08-NC11. [PMID: 28892948 DOI: 10.7860/jcdr/2017/25799.10213] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 06/08/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Macular disease is the leading cause of low vision in the Western world. Drusen and pigmentary irregularities are common among the rural Northern Indian population. The disease process leads to loss of central vision, metamorphopsia, macropsia or micropsia and colour vision defect. AIM To study the retinal sensitivity changes in macular diseases using microperimetry. MATERIALS AND METHODS It was an observational study, conducted in the Department of Ophthalmology at a rural tertiary care hospital. This study was started from December 2014 until June 2016, in all patients with macular disease above the age of 20 years attending the outpatient department. Microperimetry was done for 84 eyes of 52 patients with macular disease. Mean retinal Sensitivity (MS) and fixation stability was evaluated. The statistical analysis of mean retinal sensitivity, central 2° and 4° fixation was done by calculating the mean and standard deviation using 95% confidence interval. RESULTS The range of age was between 20-81 years. Majority were 32 males (62%) and 20 females (38%). Out of the 84 eyes studied, majority of the macular disease were Age-Related Macular Degeneration (AMD) (50%). Rest 50% were other macular diseases. The mean retinal sensitivity (dB) shown by microperimetry was 10.83 in AMD, 9.12 in Cystoid Macular Oedema (CME), 10.34 in Epiretinal Membrane (ERM), 10.74 in Pigment Epithelial Detachment (PED), 8.96 in Central Serous Chorioretinopathy (CSCR), 6.43 in macular dystrophy, 7.15 in Lamellar Hole (LMH), 9.8 in Pseudomacular Hole (PMH), 3 in geographic atrophy, 11.1 in macular telangiectasia, 5.6 in Berlin oedema, 12.3 in macular scar and 15.2 in haemorrhage in macula. The study showed 64% of the eyes had stable 2° central fixation, 35% had relatively unstable fixation and 1% had unstable fixation. No significant correlation between retinal sensitivity and retinal thickness in AMD was found. CONCLUSION This study shows that microperimetry can be a useful tool for objective evaluation of macular function and progression of the disease.
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Affiliation(s)
- Memota Laishram
- Resident, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - Krishnagopal Srikanth
- Professor and Head, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - A R Rajalakshmi
- Associate Professor, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - Swathi Nagarajan
- Assistant Professor, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
| | - G Ezhumalai
- Senior Statistician, Department of Statistics, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
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Song T, Nairismagi M, Lim J, Nagarajan S, Pang J, Laurensia Y, Wijaya G, Jing T, Ong C. ONCOGENIC ACTIVATION OF STAT3 PATHWAY DRIVES PD-L1 EXPRESSION IN NATURAL KILLER/T CELL LYMPHOMA. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- T. Song
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - M. Nairismagi
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - J. Lim
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - S. Nagarajan
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - J.W. Pang
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - Y. Laurensia
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - G.C. Wijaya
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - T. Jing
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
| | - C. Ong
- Division of Medical Oncology; National Cancer Centre Singapore; Singapore Singapore
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Reekhaye A, Sakthivel A, Nagarajan S, Gowda R. Metachronous bilateral testicular metastases from renal cell carcinoma: a case report. Journal of Clinical Urology 2017. [DOI: 10.1177/2051415815607420] [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: 11/16/2022]
Affiliation(s)
- A Reekhaye
- Department of Urology, James Cook University Hospital, Middlesbrough, UK
| | - A Sakthivel
- Department of Urology, James Cook University Hospital, Middlesbrough, UK
| | - S Nagarajan
- Department of Pathology, James Cook University Hospital, Middlesbrough, UK
| | - R Gowda
- Department of Urology, James Cook University Hospital, Middlesbrough, UK
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Nagarajan S, Deepthi K, Gowd EB. Structural evolution of poly(l-lactide) block upon heating of the glassy ABA triblock copolymers containing poly(l-lactide) A blocks. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.06.031] [Citation(s) in RCA: 14] [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] [Indexed: 12/01/2022]
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Abstract
We present a case that we believe to be the largest mixed germ cell testicular tumour reported in the United Kingdom. A 23-year-old male was admitted to our urology department with a large scrotal swelling. The patient was found to have a giant left testicular tumour and a solitary lung metastasis at presentation. He underwent an emergency radical orchidectomy and subsequently received four cycles of bleomycin, etoposide and cisplatin chemotherapy. Four months after starting treatment, the tumour markers had normalised and a repeat staging computed tomography showed no active disease. The tumour reached that size because of the patient's failure to seek medical attention due to fear and embarrassment.
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Affiliation(s)
- A Reekhaye
- James Cook University Hospital , Middlesbrough , UK
| | - A Harris
- James Cook University Hospital , Middlesbrough , UK
| | - S Nagarajan
- James Cook University Hospital , Middlesbrough , UK
| | - D Chadwick
- James Cook University Hospital , Middlesbrough , UK
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31
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Wu H, Nagarajan S, Zhou L, Duan Y, Zhang J. Synthesis and characterization of cellulose nanocrystal-graft-poly(d-lactide) and its nanocomposite with poly(l-lactide). POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.070] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Thomas L, Fatah S, Nagarajan S, Taylor WD. An intensely itchy papular eruption. Clin Exp Dermatol 2016; 41:834-6. [PMID: 27663170 DOI: 10.1111/ced.12905] [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] [Accepted: 12/08/2015] [Indexed: 11/26/2022]
Affiliation(s)
- L Thomas
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK.
| | - S Fatah
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK
| | - S Nagarajan
- Department of Histopathology, James Cook University Hospital, Middlesbrough, UK
| | - W D Taylor
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK
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Kochupurakal RT, Srikanth K, Jha KN, Rajalakshmi AR, Nagarajan S, Ezhumalai G. Role of Optical Coherence Tomography in Assessing Anterior Chamber Angles. J Clin Diagn Res 2016; 10:NC18-20. [PMID: 27190851 DOI: 10.7860/jcdr/2016/17879.7701] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/31/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Gonioscopy is the gold standard in assessing anterior chamber angles. However, interobserver variations are common and there is a need for reliable objective method of assessment. AIM To compare the anterior chamber angle by gonioscopy and Spectral Domain Optical Coherence Tomography (SD-OCT) in individuals with shallow anterior chamber. MATERIALS AND METHODS This comparative observational study was conducted in a rural tertiary multi-speciality teaching hospital. A total of 101 eyes of 54 patients with shallow anterior chamber on slit lamp evaluation were included. Anterior chamber angle was graded by gonioscopy using the shaffer grading system. Angles were also assessed by SD-OCT with Trabecular Iris Angle (TIA) and Angle Opening Distance (AOD). Chi-square test, sensitivity, specificity, positive and negative predictive value to find correlation between OCT parameters and gonioscopy grading. RESULTS Females represented 72.7%. The mean age was 53.93 ±8.24 years and mean anterior chamber depth was 2.47 ± 0.152 mm. Shaffer grade ≤ 2 were identified in 95(94%) superior, 42(41.5%) inferior, 65(64.3%) nasal and 57(56.4%) temporal quadrants. Cut-off values of TIA ≤ 22° and AOD ≤ 290 μm were taken as narrow angles on SD-OCT. TIA of ≤ 22° were found in 88(92.6%) nasal and 87(87%) temporal angles. AOD of ≤ 290 μm was found in 73(76.8%) nasal and 83(83%) temporal quadrants. Sensitivity in detecting narrow angles was 90.7% and 82.2% for TIA and AOD, while specificity was 11.7% and 23.4%, respectively. CONCLUSION Individuals were found to have narrow angles more with SD-OCT. Sensitivity was high and specificity was low in detecting narrow angles compared to gonioscopy, making it an unreliable tool for screening.
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Affiliation(s)
- Reema Thomas Kochupurakal
- Resident, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
| | - Krishnagopal Srikanth
- Professor and Head, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
| | - Kirti Nath Jha
- Professor, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
| | - A R Rajalakshmi
- Associate Professor, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
| | - Swathi Nagarajan
- Associate Professor, Department of Ophthalmology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
| | - G Ezhumalai
- Senior Statistician and Research Consultant, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University , Pondicherry, India
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Kamali D, Sharpe A, Nagarajan S, Elsaify W. Non-functioning parathyroid adenoma: a rare differential diagnosis for vocal-cord paralysis. Ann R Coll Surg Engl 2016; 98:e94-6. [PMID: 27055408 DOI: 10.1308/rcsann.2016.0137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction Adenomas of the parathyroid gland typically present with symptoms of hyperparathyroidism, manifested by fatigue, bone pain, abdominal pain, weakness, dyspepsia, nephrolithiasis and skeletal bone disease. Here, we describe, for the first time, a case of a non-functioning benign tumour of the parathyroid gland presenting as vocal-cord paralysis. Case History A 49-year-old male presented with a 10-week history of dysphonia and the feeling of having 'something stuck in my throat'. History-taking elicited no other associated symptoms. Flexible nasal endoscopy demonstrated paralysis of the left vocal cord. Computed tomography of the neck revealed a cystic lesion, 18mm in diameter adjacent to the oesophagus. After more rigorous tests, a neck exploration, left hemithyroidectomy, excision of the left paratracheal mass and level-VI neck dissection was undertaken, without incident to the patient or surgical team. Histology was consistent with a parathyroid adenoma. Conclusions This case emphasises the importance of including adenomatous disease of the parathyroid gland in the differential diagnosis despite normal parathyroid status as a cause of vocal cord palsy.
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Affiliation(s)
- D Kamali
- James Cook University Hospital , UK
| | - A Sharpe
- James Cook University Hospital , UK
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35
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Berman JI, Chudnovskaya D, Blaskey L, Kuschner E, Mukherjee P, Buckner R, Nagarajan S, Chung WK, Sherr EH, Roberts TPL. Relationship between M100 Auditory Evoked Response and Auditory Radiation Microstructure in 16p11.2 Deletion and Duplication Carriers. AJNR Am J Neuroradiol 2016; 37:1178-84. [PMID: 26869473 DOI: 10.3174/ajnr.a4687] [Citation(s) in RCA: 16] [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] [Received: 07/28/2015] [Accepted: 11/16/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE Deletion and duplication of chromosome 16p11.2 (BP4-BP5) have been associated with developmental disorders such as autism spectrum disorders, and deletion subjects exhibit a large (20-ms) delay of the auditory evoked cortical response as measured by magnetoencephalography (M100 latency). The purpose of this study was to use a multimodal approach to test whether changes in white matter microstructure are associated with delayed M100 latency. MATERIALS AND METHODS Thirty pediatric deletion carriers, 9 duplication carriers, and 39 control children were studied with both magnetoencephalography and diffusion MR imaging. The M100 latency and auditory system DTI measures were compared between groups and tested for correlation. RESULTS In controls, white matter diffusivity significantly correlated with the speed of the M100 response. However, the relationship between structure and function appeared uncoupled in 16p11.2 copy number variation carriers. The alterations to auditory system white matter microstructure in the 16p11.2 deletion only partially accounted for the 20-ms M100 delay. Although both duplication and deletion groups exhibit abnormal white matter microstructure, only the deletion group has delayed M100 latency. CONCLUSIONS These results indicate that gene dosage impacts factors other than white matter microstructure, which modulate conduction velocity.
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Affiliation(s)
- J I Berman
- From the Department of Radiology (J.I.B., D.C., L.B., E.K., T.P.L.R.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania Department of Radiology (J.I.B., T.P.L.R.), Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - D Chudnovskaya
- From the Department of Radiology (J.I.B., D.C., L.B., E.K., T.P.L.R.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - L Blaskey
- From the Department of Radiology (J.I.B., D.C., L.B., E.K., T.P.L.R.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - E Kuschner
- From the Department of Radiology (J.I.B., D.C., L.B., E.K., T.P.L.R.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | | | - R Buckner
- Department of Psychology (R.B.), Harvard University, Cambridge, Massachusetts
| | - S Nagarajan
- Departments of Pediatrics and Medicine (S.N., W.K.C.), Columbia University Medical Center, New York, New York
| | - W K Chung
- Departments of Pediatrics and Medicine (S.N., W.K.C.), Columbia University Medical Center, New York, New York
| | - E H Sherr
- Neurology (E.H.S.), University of California, San Francisco School of Medicine, San Francisco, California
| | - T P L Roberts
- From the Department of Radiology (J.I.B., D.C., L.B., E.K., T.P.L.R.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania Department of Radiology (J.I.B., T.P.L.R.), Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Nairismägi ML, Tan J, Lim JQ, Nagarajan S, Ng CCY, Rajasegaran V, Huang D, Lim WK, Laurensia Y, Wijaya GC, Li ZM, Cutcutache I, Pang WL, Thangaraju S, Ha J, Khoo LP, Chin ST, Dey S, Poore G, Tan LHC, Koh HKM, Sabai K, Rao HL, Chuah KL, Ho YH, Ng SB, Chuang SS, Zhang F, Liu YH, Pongpruttipan T, Ko YH, Cheah PL, Karim N, Chng WJ, Tang T, Tao M, Tay K, Farid M, Quek R, Rozen SG, Tan P, Teh BT, Lim ST, Tan SY, Ong CK. JAK-STAT and G-protein-coupled receptor signaling pathways are frequently altered in epitheliotropic intestinal T-cell lymphoma. Leukemia 2016; 30:1311-9. [PMID: 26854024 PMCID: PMC4895162 DOI: 10.1038/leu.2016.13] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [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: 07/15/2015] [Revised: 01/07/2016] [Accepted: 01/18/2016] [Indexed: 12/11/2022]
Abstract
Epitheliotropic intestinal T-cell lymphoma (EITL, also known as type II enteropathy-associated T-cell lymphoma) is an aggressive intestinal disease with poor prognosis and its molecular alterations have not been comprehensively characterized. We aimed to identify actionable easy-to-screen alterations that would allow better diagnostics and/or treatment of this deadly disease. By performing whole-exome sequencing of four EITL tumor-normal pairs, followed by amplicon deep sequencing of 42 tumor samples, frequent alterations of the JAK-STAT and G-protein-coupled receptor (GPCR) signaling pathways were discovered in a large portion of samples. Specifically, STAT5B was mutated in a remarkable 63% of cases, JAK3 in 35% and GNAI2 in 24%, with the majority occurring at known activating hotspots in key functional domains. Moreover, STAT5B locus carried copy-neutral loss of heterozygosity resulting in the duplication of the mutant copy, suggesting the importance of mutant STAT5B dosage for the development of EITL. Dysregulation of the JAK-STAT and GPCR pathways was also supported by gene expression profiling and further verified in patient tumor samples. In vitro overexpression of GNAI2 mutants led to the upregulation of pERK1/2, a member of MEK-ERK pathway. Notably, inhibitors of both JAK-STAT and MEK-ERK pathways effectively reduced viability of patient-derived primary EITL cells, indicating potential therapeutic strategies for this neoplasm with no effective treatment currently available.
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Affiliation(s)
- M-L Nairismägi
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - J Tan
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - J Q Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Nagarajan
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - C C Y Ng
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - V Rajasegaran
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - D Huang
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - W K Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Y Laurensia
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - G C Wijaya
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - Z M Li
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - I Cutcutache
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Centre for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - W L Pang
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Thangaraju
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - J Ha
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - L P Khoo
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S T Chin
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S Dey
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - G Poore
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - L H C Tan
- Department of Pathology, Singapore General Hospital, Singapore, Singapore
| | - H K M Koh
- Advanced Molecular Pathology Laboratory, Singapore Health Services, Singapore, Singapore
| | - K Sabai
- Advanced Molecular Pathology Laboratory, Singapore Health Services, Singapore, Singapore
| | - H-L Rao
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - K L Chuah
- Department of Pathology, Tan Tock Seng Hospital, Singapore, Singapore
| | - Y-H Ho
- Department of Pathology, Tan Tock Seng Hospital, Singapore, Singapore
| | - S-B Ng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Pathology, National University Hospital, National University Health System, Singapore, Singapore
| | - S-S Chuang
- Department of Pathology, Chi Mei Medical Center, Tainan, Taiwan.,Department of Pathology, Taipei Medical University and National Taiwan University, Taipei, Taiwan
| | - F Zhang
- Department of Pathology, Guangdong General Hospital, Guangzhou, China
| | - Y-H Liu
- Department of Pathology, Guangdong General Hospital, Guangzhou, China
| | - T Pongpruttipan
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Y H Ko
- Department of Pathology, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - P-L Cheah
- Department of Pathology, University of Malaya, Kuala Lumpur, Malaysia
| | - N Karim
- Department of Pathology, Hospital Raja Permaisuri Bainun, Ipoh, Malaysia
| | - W-J Chng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Department of Haematology-Oncology, National University Hospital, National University Health System, Singapore, Singapore
| | - T Tang
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - M Tao
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - K Tay
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - M Farid
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - R Quek
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - S G Rozen
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Centre for Computational Biology, Duke-NUS Medical School, Singapore, Singapore
| | - P Tan
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Genome Institute of Singapore, A*STAR, Singapore, Singapore
| | - B T Teh
- Laboratory of Cancer Epigenome, Division of Medical Sciences, National Cancer Centre Singapore, Singapore, Singapore.,Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - S T Lim
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore.,Office of Education, Duke-NUS Medical School, Singapore, Singapore
| | - S-Y Tan
- Department of Pathology, Singapore General Hospital, Singapore, Singapore.,Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Pathology, National University Hospital, National University Health System, Singapore, Singapore.,Department of Pathology, Guangdong General Hospital, Guangzhou, China.,Department of Pathology, University of Malaya, Kuala Lumpur, Malaysia.,Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - C K Ong
- Lymphoma Genomic Translational Research Laboratory, Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
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37
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Redda YT, Venkatesh G, Kalaiyarasu S, Bhatia S, Kumar DS, Nagarajan S, Pillai A, Tripathi S, Kulkarni DD, Dubey SC. Expression and purification of recombinant H5HA1 protein of H5N1 avian influenza virus in E. coli and its application in indirect ELISA. J Immunoassay Immunochem 2016; 37:346-58. [PMID: 26829111 DOI: 10.1080/15321819.2015.1135160] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The PCR amplified HA1 fragment of H5N1 (H5HA1) avian influenza virus (AIV) hemagglutinin gene was cloned into pET28a (+) expression vector and expressed in Rosetta Blue (DE3) pLysS cells. The recombinant H5HA1 (rH5HA1) protein purified by passive gel elution after SDS-PAGE of the inclusion bodies reacted specifically with H5N1 serum in Western blot analysis. A subtype specific indirect enzyme linked immunosorbent assay (iELISA) using the rH5HA1 protein as the coating antigen was developed for detecting antibodies to H5 subtype of AIV. The assay had 89.04% sensitivity and 95.95% specificity when compared with haemagglutination inhibition test. The Kappa value of 0.842 indicated a perfect agreement between the tests. The iELISA developed can be used for serosurveillance of avian influenza in chickens.
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Affiliation(s)
- Y T Redda
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - G Venkatesh
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Kalaiyarasu
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Bhatia
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - D Senthil Kumar
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Nagarajan
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - A Pillai
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S Tripathi
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - D D Kulkarni
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
| | - S C Dubey
- a ICAR - National Institute of High Security Animal Diseases , Anand Nagar, Bhopal , Madhya Pradesh , India
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Nan F, Chen Q, Liu P, Nagarajan S, Duan Y, Zhang J. Iridescent graphene/cellulose nanocrystal film with water response and highly electrical conductivity. RSC Adv 2016. [DOI: 10.1039/c6ra20133d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The co-assembly of cellulose nanocrystal (CNC) and thermal reduced graphene (TRG) leads to composite films with highly ordered, layered structures at submicrometer level, which can be reversibly changed by the hydration or dehydration process.
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Affiliation(s)
- Fuchun Nan
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
| | - Qi Chen
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
| | - Ping Liu
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
| | - S. Nagarajan
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
| | - Yongxin Duan
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
| | - Jianming Zhang
- Key Laboratory of Rubber-Plastics
- Ministry of Education
- Shandong Provincial Key Laboratory of Rubber-Plastics
- Qingdao University of Science & Technology
- Qingdao City 266042
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Jacob A, Sood R, Chanu KV, Bhatia S, Khandia R, Pateriya AK, Nagarajan S, Dimri U, Kulkarni DD. Amantadine resistance among highly pathogenic avian influenza viruses (H5N1) isolated from India. Microb Pathog 2015; 91:35-40. [PMID: 26639679 DOI: 10.1016/j.micpath.2015.11.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 07/17/2015] [Revised: 11/03/2015] [Accepted: 11/11/2015] [Indexed: 11/24/2022]
Abstract
Emergence of antiviral resistance among H5N1 avian influenza viruses is the major challenge in the control of pandemic influenza. Matrix 2 (M2) inhibitors (amantadine and rimantadine) and neuraminidase inhibitors (oseltamivir and zanamivir) are the two classes of antiviral agents that are specifically active against influenza viruses and are used for both treatment and prophylaxis of influenza infections. Amantadine targets the M2 ion channel of influenza A virus and interrupts virus life cycle through blockade of hydrogen ion influx. This prevents uncoating of the virus in infected host cells which impedes the release of ribonucleoprotein required for transcription and replication of virion in the nucleus. The present study was carried out to review the status of amantadine resistance in H5N1 viruses isolated from India and to study their replicative capability. Results of the study revealed resistance to amantadine in antiviral assay among four H5N1 viruses out of which two viruses had Serine 31 Asparagine (AGT-AAT i.e., S31N) mutation and two had Valine 27 Alanine (GTT-GCT i.e., V27A) mutation. The four resistant viruses not only exhibited significant difference in effective concentration 50% (EC50) values of amantadine hydrochloride from that of susceptible viruses (P < 0.0001) but also showed significant difference between two different types (S31N and V27A) of mutant viruses (P < 0.05). Resistance to amantadine could also be demonstrated in a simple HA test after replication of the viruses in MDCK cells in presence of amantadine. The study identifies the correlation between in vitro antiviral assay and presence of established molecular markers of resistance, the retention of replicative capacity in the presence of amantadine hydrochloride by the resistant viruses and the emergence of resistant mutations against amantadine among avian influenza viruses (H5N1) without selective drug pressure.
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Affiliation(s)
- Aron Jacob
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - Richa Sood
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India.
| | - Kh Victoria Chanu
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - Sandeep Bhatia
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - Rekha Khandia
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - A K Pateriya
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - S Nagarajan
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
| | - U Dimri
- Division of Veterinary Medicine, ICAR-Indian Veterinary Research Institute, Izatnagar 243122, Uttar Pradesh, India
| | - D D Kulkarni
- ICAR-National Institute of High Security Animal Diseases, Anand Nagar, Bhopal 462022, Madhya Pradesh, India
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40
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Deek M, Nagarajan S, Kim S, Ahmed I, Paul S, Scher E, Listo M, Chen A, Aisner J, Hussain S, Haffty B, Jabbour S. Clinical Characteristics and Dose Volume Histogram Parameters Associated With Pleural Effusion in Non-Small Cell Lung Cancer Patients Treated With Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Nagarajan S, Gowd EB. Cold Crystallization of PDMS and PLLA in Poly(l-lactide-b-dimethylsiloxane-b-l-lactide) Triblock Copolymer and Their Effect on Nanostructure Morphology. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01179] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- S. Nagarajan
- Materials
Science and Technology
Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019 Kerala, India
| | - E. Bhoje Gowd
- Materials
Science and Technology
Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019 Kerala, India
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42
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Fazal E, Panicker CY, Varghese HT, Nagarajan S, Sudha BS, War JA, Srivastava SK, Harikumar B, Anto PL. Spectroscopic investigation (FT-IR, FT-Raman), HOMO-LUMO, NBO analysis and molecular docking study of 4-chlorophenyl quinoline-2-carboxylate. Spectrochim Acta A Mol Biomol Spectrosc 2015; 145:260-269. [PMID: 25791883 DOI: 10.1016/j.saa.2015.01.089] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 10/23/2014] [Revised: 01/11/2015] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
FT-IR and FT-Raman spectra of 4-chlorophenyl quinoline-2-carboxylate were recorded and analyzed. The vibrational wavenumbers were computed using DFT quantum chemical calculations. The data obtained from wavenumber calculations are used to assign vibrational bands obtained experimentally. Potential energy distribution was done using GAR2PED program. The geometrical parameters obtained theoretically are in agreement with the XRD data. NBO analysis, HOMO-LUMO, first hyperpolarizability and molecular electrostatic potential results are also reported. The calculated hyperpolarizability of the title compound is 77.53 times that of the standard NLO material urea and the title compound and its derivatives are attractive object for future studies of nonlinear optical properties. Molecular docking results suggest that the compound might exhibit inhibitory activity against GPb.
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Affiliation(s)
- E Fazal
- Department of Chemistry, Yuvaraja's College, Mysore, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - S Nagarajan
- Department of Spice and Flavour Science, CSIR Central Food Technology Research Institute, Mysore, India
| | - B S Sudha
- Department of Chemistry, Yuvaraja's College, Mysore, India
| | - Javeed Ahamad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - B Harikumar
- Department of Chemistry, TKM College of Arts and Science, Kollam, Kerala, India
| | - P L Anto
- Department of Physics, Christ College, Iringalakkuda, Thrissur, Kerala, India
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43
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Fazal E, Panicker CY, Varghese HT, Nagarajan S, Sudha BS, War JA, Srivastava SK, Harikumar B, Anto PL. Vibrational spectroscopic and molecular docking study of 4-Methylphenylquinoline-2-carboxylate. Spectrochim Acta A Mol Biomol Spectrosc 2015; 143:213-222. [PMID: 25733248 DOI: 10.1016/j.saa.2015.01.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 01/11/2015] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
FT-IR and FT-Raman spectra of 4-Methylphenylquinoline-2-carboxylate were recorded and analyzed. The structure of the molecule has been optimized and structural characteristics have been determined by density functional theory. The geometrical parameters (DFT) are in agreement with the XRD results. HOMO and LUMO and other chemical properties are reported. Nonlinear optical properties are also reported. A detailed molecular picture of the title compound and its interactions were obtained from NBO analysis. The negative (red and yellow) regions of the MEP are related to electrophilic reactivity and the positive (blue) regions to nucleophilic reactivity, as shown in the MEP plot and the carbonyl group and the phenyl rings are observed as electrophilic. PASS analysis predicts that the 4-Methylphenylquinoline-2-carboxylate might exhibit anti-diabetic activity. Molecular docking results suggest that the compound might exhibit inhibitory activity against GPb.
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Affiliation(s)
- E Fazal
- Department of Chemistry, Yuvaraja's College, Mysore, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - S Nagarajan
- Department of Spice and Flavour Science, CSIR-Central Food Technology Research Institute, Mysore, India
| | - B S Sudha
- Department of Chemistry, Yuvaraja's College, Mysore, India
| | - Javeed Ahamad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - B Harikumar
- Department of Chemistry, TKM College of Arts and Science, Kollam, Kerala, India
| | - P L Anto
- Department of Physics, Christ College, Iringalakkuda, Thrissur, Kerala, India
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44
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Thomas L, Fatah S, Nagarajan S, Natarajan S. Eosinophilic annular erythema: successful response to ultraviolet B therapy. Clin Exp Dermatol 2015; 40:883-6. [PMID: 25958878 DOI: 10.1111/ced.12668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2014] [Indexed: 11/30/2022]
Abstract
Eosinophilic annular erythema (EAE) is a rare and relatively newly described eosinophil-rich dermatosis. Debate still exists as to whether it represent a subtype of Well syndrome or a separate disease entity. We report an 8-year-old boy with a 4-year history of recurrent, asymptomatic annular lesions, which were diagnosed after clincopathological correlation as EAE. This condition usually runs a relapsing and remitting course with resistance to multiple treatments. Prednisolone and hydroxychloroquine have been reported as successful but the response to these was limited in this case. Complete resolution occurred after treatment with ultraviolet B (UVB) therapy. To our knowledge, this is the first report of a favourable response of EAE to such therapy.
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Affiliation(s)
- L Thomas
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK
| | - S Fatah
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK
| | - S Nagarajan
- Department of Histopathology, James Cook University Hospital, Middlesbrough, UK
| | - S Natarajan
- Department of Dermatology, James Cook University Hospital, Middlesbrough, UK
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45
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Suba S, Nagarajan S, Saxena VK, Kumar M, Vanamayya PR, Rajukumar K, Gowthaman V, Jain V, Singh DP, Dubey SC. Pathology of a H5N1, highly pathogenic avian influenza virus, in two Indian native chicken breeds and a synthetic broiler line. Indian J Exp Biol 2015; 53:202-207. [PMID: 26011980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, susceptibility to H5N1 virus infection was studied in two Indian native chicken breeds viz. Kadaknath and Aseel (Peela) and an Indian synthetic broiler strain (Synthetic dam line (SDL-IC). Fifty birds from each genetic group were infected intra-nasally with 1000 EID50 of a highly pathogenic avian influenza virus (HPAIV) strain A/chicken/Navapur/India/7972/ 06 (H5N1) and observed for a period of 10 days. Significant differences in severity of clinical signs, gross lesions and time for onset of symptoms were observed. The overall severity of clinical signs and gross lesions was less in SDL-IC broilers as compared to the other two genetic groups. The mortality percentages were 100, 98 and 92% with Mean Death Time (MDT) of 3.12, 5.92 and 6.96 days, respectively for the two native breeds Kadaknath and Aseel (Peela), the and SDL-IC broiler strain. Comparison of histological lesions revealed differences in disease progression among the genetic groups. Vascular lesions such as disseminated intravascular coagulopathy (DIC) were predominant on 3 days post infection (dpi) in Kadaknath, and on 5 and 6 dpi in Aseel (Peela) and SDL-IC broiler. The mean log2 HA titres of the re-isolated virus from various organs of H5N1 AIV infected birds of the three genetic groups ranged from 2.32 (lung, trachea and bursa) to 5.04 (spleen) in Kadaknath; 2.32 (lung) to 6.68 (brain) in Aseel (Peela); and 2.06 (liver) to 7.01 (lungs and kidney) in SDL-IC broiler. These results suggest that the susceptibility to H5N1 highly pathogenic avian influenza virus infection differed among the three breeds; Kadaknath being highest followed by Aseel (Peela) and synthetic SDL-IC broiler. This is possibly the first report on the differences in the susceptibility of the India native breeds to H5N1 virus infection and its severity.
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46
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Nagarajan S, Shaikh TM, Kandasamy E. An ionic liquid catalyzed reusable protocol for one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one under mild conditions. NEW J CHEM 2015. [DOI: 10.1039/c5nj01545f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article describes an efficient protocol for the syntheses of 2,3-dihydroquinazolinones. The synthetic utility of this methodology has been demonstrated with 30 different substrates. The reaction showed good functional group tolerance and high levels of catalytic activity.
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Affiliation(s)
- S. Nagarajan
- Department of Chemistry
- Vel Tech University
- Chennai 610062
- India
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47
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Dash S, Kumar M, Kataria J, Tosh C, Murugkar H, Rajukumar K, Kulkarni D, Nagarajan S. Experimental assessment of pathogenicity and infectivity of H9N2 influenza virus isolated from a natural outbreak. ACTA ACUST UNITED AC 2015. [DOI: 10.5958/0973-970x.2015.00053.x] [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: 10/23/2022]
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48
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Kayalvizhi M, Vakees E, Suresh J, Nagarajan S, Arun A. Spacer length controlled highly thermo reversible polyurethane-urea based on polystyrene: synthesis and crystallization studies. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- M. Kayalvizhi
- P.G. & Research Department of Chemistry; Government Arts College; Tiruvannamalai 606603 Tamil Nadu India
| | - E. Vakees
- P.G. & Research Department of Chemistry; Government Arts College; Tiruvannamalai 606603 Tamil Nadu India
| | - J. Suresh
- P.G. & Research Department of Chemistry; Government Arts College; Tiruvannamalai 606603 Tamil Nadu India
| | - S. Nagarajan
- Central Leather Research Institute; Adyar Chennai 600 020 Tamil Nadu India
| | - A. Arun
- P.G. & Research Department of Chemistry; Government Arts College; Tiruvannamalai 606603 Tamil Nadu India
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49
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Meyer F, Blum M, Benkert A, Hauschild D, Nagarajan S, Wilks RG, Andersson J, Yang W, Zharnikov M, Bär M, Heske C, Reinert F, Weinhardt L. “Building Block Picture” of the Electronic Structure of Aqueous Cysteine Derived from Resonant Inelastic Soft X-ray Scattering. J Phys Chem B 2014; 118:13142-50. [DOI: 10.1021/jp5089417] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- F. Meyer
- Experimentelle
Physik VII, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - M. Blum
- Department
of Chemistry, University of Nevada, Las Vegas, 4505 Maryland
Parkway, Las Vegas, Nevada 89154-4003, United States
| | - A. Benkert
- Experimentelle
Physik VII, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - D. Hauschild
- Experimentelle
Physik VII, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - S. Nagarajan
- Angewandte
Physikalische Chemie, Universität Heidelberg, INF 253,69120 Heidelberg, Germany
| | - R. G. Wilks
- Solar
Energy Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - J. Andersson
- Department
of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden
| | - W. Yang
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - M. Zharnikov
- Angewandte
Physikalische Chemie, Universität Heidelberg, INF 253,69120 Heidelberg, Germany
| | - M. Bär
- Department
of Chemistry, University of Nevada, Las Vegas, 4505 Maryland
Parkway, Las Vegas, Nevada 89154-4003, United States
- Solar
Energy Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institut
für Physik und Chemie, Brandenburgische Technische Universität Cottbus-Senftenberg, Platz der Deutschen Einheit 1, 03046 Cottbus, Germany
| | - C. Heske
- Department
of Chemistry, University of Nevada, Las Vegas, 4505 Maryland
Parkway, Las Vegas, Nevada 89154-4003, United States
- Institute
for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 18/20, 76128 Karlsruhe, Germany
| | - F. Reinert
- Experimentelle
Physik VII, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - L. Weinhardt
- Department
of Chemistry, University of Nevada, Las Vegas, 4505 Maryland
Parkway, Las Vegas, Nevada 89154-4003, United States
- Institute
for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 18/20, 76128 Karlsruhe, Germany
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50
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Vakees E, Suresh J, Kayalvizhi M, Nagarajan S, Arun A. Highly Solvent-Resistant Polystyrene Based on Uniform Tetraamide Units. Adv Polym Technol 2014. [DOI: 10.1002/adv.21485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- E. Vakees
- P. G. and Research Department of Chemistry; Government Arts College; Tiruvannamalai 606 603 India
| | - J. Suresh
- P. G. and Research Department of Chemistry; Government Arts College; Tiruvannamalai 606 603 India
| | - M. Kayalvizhi
- P. G. and Research Department of Chemistry; Government Arts College; Tiruvannamalai 606 603 India
| | - S. Nagarajan
- Central Leather Research Institute; Adyar; Chennai 600 020 India
| | - A. Arun
- P. G. and Research Department of Chemistry; Government Arts College; Tiruvannamalai 606 603 India
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