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Shewade HD, Frederick A, Suma KV, Rao R, Selvavinayagam TS, Ramachandran R, Murhekar MV. Differentiated TB care: Tamil Nadu's achievements, plans and implications for national TB programmes. Int J Tuberc Lung Dis 2024; 28:160-162. [PMID: 38454188 DOI: 10.5588/ijtld.23.0297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024] Open
Affiliation(s)
- H D Shewade
- ICMR-National Institute of Epidemiology (ICMR-NIE), Chennai
| | - A Frederick
- State TB Cell, Government of Tamil Nadu, Chennai
| | - K V Suma
- Office of the WHO Representative to India, WHO Country Office, New Delhi
| | - R Rao
- Central TB Division, Ministry of Health and Family Welfare, New Delhi
| | - T S Selvavinayagam
- Directorate of Public Health and Preventive Medicine, Government of Tamil Nadu, Chennai, India
| | - R Ramachandran
- Office of the WHO Representative to India, WHO Country Office, New Delhi
| | - M V Murhekar
- ICMR-National Institute of Epidemiology (ICMR-NIE), Chennai
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Chen TW, Chen SM, Anushya G, Kannan R, G. Al-Sehemi A, Alargarsamy S, Gajendran P, Ramachandran R. Development of Different Kinds of Electrocatalyst for the Electrochemical Reduction of Carbon Dioxide Reactions: An Overview. Molecules 2023; 28:7016. [PMID: 37894499 PMCID: PMC10609525 DOI: 10.3390/molecules28207016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/26/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
Significant advancements have been made in the development of CO2 reduction processes for applications such as electrosynthesis, energy storage, and environmental remediation. Several materials have demonstrated great potential in achieving high activity and selectivity for the desired reduction products. Nevertheless, these advancements have primarily been limited to small-scale laboratory settings, and the considerable technical obstacles associated with large-scale CO2 reduction have not received sufficient attention. Many of the researchers have been faced with persistent challenges in the catalytic process, primarily stemming from the low Faraday efficiency, high overpotential, and low limiting current density observed in the production of the desired target product. The highlighted materials possess the capability to transform CO2 into various oxygenates, including ethanol, methanol, and formates, as well as hydrocarbons such as methane and ethane. A comprehensive summary of the recent research progress on these discussed types of electrocatalysts is provided, highlighting the detailed examination of their electrocatalytic activity enhancement strategies. This serves as a valuable reference for the development of highly efficient electrocatalysts with different orientations. This review encompasses the latest developments in catalyst materials and cell designs, presenting the leading materials utilized for the conversion of CO2 into various valuable products. Corresponding designs of cells and reactors are also included to provide a comprehensive overview of the advancements in this field.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan;
| | - Ganesan Anushya
- Department of Physics, St. Joseph College of Engineering, Sriperumbudur, Chennai 602 117, India;
| | - Ramanujam Kannan
- Department of Chemistry, Sri Kumara Gurupara Swamigal Arts College (Affiliated to Manomaniam Sundaranar University), Srivaikuntam, Thoothukudi 628 619, India;
| | - Abdullah G. Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia;
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Saranvignesh Alargarsamy
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan;
| | - Pandi Gajendran
- Department of Chemistry, The Madura College (Affiliated to Madurai Kamaraj University), Vidya Nagar, Madurai 625 011, India;
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College (Affiliated to Madurai Kamaraj University), Vidya Nagar, Madurai 625 011, India;
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Rajendran P, Saini S, Kumar N, Vashistha H, Thiruvengadam K, Ramamoorthy T, Gopalaswamy R, Kayesth J, Alavadi U, Moore M, Joshi RP, Ramachandran R, Anand S, Shanmugam S, Padmapriyadarsini C. Establishing proof of concept for utility of Trueprep ®-extracted DNA in line-probe assay testing. Int J Tuberc Lung Dis 2023; 27:742-747. [PMID: 37749831 PMCID: PMC10519390 DOI: 10.5588/ijtld.23.0003] [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: 01/01/2023] [Accepted: 04/01/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND AND OBJECTIVES: With an increased demand for rapid, diagnostic tools for TB and drug resistance detection, Truenat® MTB-RIF assay has proven to be a rapid point of care molecular test. The present study aimed to establish a proof of concept of using Trueprep-extracted DNA for line-probe assay (LPA) testing.METHODS: A total of 150 sputum samples (MTB-positive at Truenat sites) were divided into two aliquots. One aliquot was used for DNA extraction using the Trueprep device and MTB testing. The second aliquot of the sample was subjected to GenoLyse® DNA extraction. DNA from both the Trueprep and GenoLyse methods was subjected to first-line (FL) and second-line (SL) LPA testing.RESULTS: Of 139 Trueprep-extracted DNA, respectively 135 (97%) and 105 (75%) had interpretable results by FL and SL-LPA testing. Of 128 GenoLyse-extracted DNA, all 128 (100%) had interpretable FL-LPA results and 114 (89%) had interpretable SL-LPA results.CONCLUSION: The results obtained in this study indicate that Trueprep-extracted DNA can be used in obtaining valid LPA results. However, the study needs to be conducted on a larger sample size before our recommendations can be used for policy-making decisions.
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Affiliation(s)
- P Rajendran
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
| | - S Saini
- Infectious Disease Detection and Surveillance Project, United States Agency for International Development (USAID), ICF Incorporated, Reston, VA, USA
| | - N Kumar
- Central TB Division, Ministry of Health and Family Welfare, New Delhi
| | - H Vashistha
- Infectious Disease Detection and Surveillance Project, United States Agency for International Development (USAID), ICF Incorporated, Reston, VA, USA
| | - K Thiruvengadam
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
| | - T Ramamoorthy
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
| | - R Gopalaswamy
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
| | - J Kayesth
- Infectious Disease Detection and Surveillance Project, United States Agency for International Development (USAID), ICF Incorporated, Reston, VA, USA
| | | | - M Moore
- Infectious Disease Detection and Surveillance Project, United States Agency for International Development (USAID), ICF Incorporated, Reston, VA, USA
| | - R P Joshi
- Central TB Division, Ministry of Health and Family Welfare, New Delhi
| | - R Ramachandran
- World Health Organization India Office, New Delhi, India
| | - S Anand
- World Health Organization India Office, New Delhi, India
| | - S Shanmugam
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
| | - C Padmapriyadarsini
- National Institute for Research in Tuberculosis, Indian Council of Medical Research, New Delhi
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Chen TW, Chen SM, Anushya G, Kannan R, Veerakumar P, Alam MM, Alargarsamy S, Ramachandran R. Metal-Oxides- and Metal-Oxyhydroxides-Based Nanocomposites for Water Splitting: An Overview. Nanomaterials (Basel) 2023; 13:2012. [PMID: 37446527 DOI: 10.3390/nano13132012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/17/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
Water electrolysis is an important alternative technology for large-scale hydrogen production to facilitate the development of green energy technology. As such, many efforts have been devoted over the past three decades to producing novel electrocatalysis with strong electrochemical (EC) performance using inexpensive electrocatalysts. Transition metal oxyhydroxide (OxH)-based electrocatalysts have received substantial interest, and prominent results have been achieved for the hydrogen evolution reaction (HER) under alkaline conditions. Herein, the extensive research focusing on the discussion of OxH-based electrocatalysts is comprehensively highlighted. The general forms of the water-splitting mechanism are described to provide a profound understanding of the mechanism, and their scaling relation activities for OxH electrode materials are given. This paper summarizes the current developments on the EC performance of transition metal OxHs, rare metal OxHs, polymers, and MXene-supported OxH-based electrocatalysts. Additionally, an outline of the suggested HER, OER, and water-splitting processes on transition metal OxH-based electrocatalysts, their primary applications, existing problems, and their EC performance prospects are discussed. Furthermore, this review article discusses the production of energy sources from the proton and electron transfer processes. The highlighted electrocatalysts have received substantial interest to boost the synergetic electrochemical effects to improve the economy of the use of hydrogen, which is one of best ways to fulfill the global energy requirements and address environmental crises. This article also provides useful information regarding the development of OxH electrodes with a hierarchical nanostructure for the water-splitting reaction. Finally, the challenges with the reaction and perspectives for the future development of OxH are elaborated.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Ganesan Anushya
- Department of Physics, St. Joseph College of Engineering, Chennai 602117, India
| | - Ramanujam Kannan
- Department of Chemistry, Sri Kumara Gurupara Swamigal Arts College, Thoothukudi 628619, India
| | - Pitchaimani Veerakumar
- Department of Biochemistry, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600077, India
| | - Mohammed Mujahid Alam
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Saranvignesh Alargarsamy
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625011, India
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Sachdeva KS, Bhatnagar AK, Bhaskar A, Singla N, Sridhar R, Ramraj B, Athawale A, Solanki R, Baruah SR, Patel Y, Ramachandran R, Padmapriyadarsini C. QTc prolongation with bedaquiline treatment for drug-resistant pulmonary TB in a programmatic setting. Int J Tuberc Lung Dis 2023; 27:329-331. [PMID: 37035973 DOI: 10.5588/ijtld.22.0406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023] Open
Affiliation(s)
- K S Sachdeva
- Central TB Division, Ministry of Health and Family Welfare, Government of India, New Delhi, India, The Union South East Asia, New Delhi, India
| | - A K Bhatnagar
- Rajan Babu Institute of Pulmonary Medicine and Tuberculosis, New Delhi, India
| | - A Bhaskar
- Indian Council of Medical Research-National Institute for Research in Tuberculosis, Chennai, India
| | - N Singla
- National Institute of Tuberculosis and Respiratory Diseases, New Delhi, India
| | - R Sridhar
- Government Hospital of Thoracic Medicine, Chennai, India
| | - B Ramraj
- Indian Council of Medical Research-National Institute for Research in Tuberculosis, Chennai, India
| | - A Athawale
- Seth GS Medical College & KEM Hospital and Group of TB Hospitals, Mumbai, India
| | - R Solanki
- BJ Medical College, Ahmedabad, India
| | | | - Y Patel
- Central TB Division, Ministry of Health and Family Welfare, Government of India, New Delhi, India, WHO Country Office for India, New Delhi, India
| | | | - C Padmapriyadarsini
- Indian Council of Medical Research-National Institute for Research in Tuberculosis, Chennai, India
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Hann A, Santiago Badenas A, Galipeau HJ, Constante M, Libertucci J, Rahmani S, Jackson K, Rueda G, Rossi L, Ramachandran R, Ruf W, Caminero A, Bercik P, Verdu EF. A3 CROHN’S DISEASE PROTEOLYTIC MICROBIOTA ENHANCES INFLAMMATION THROUGH PAR2 PATHWAY IN GNOTOBIOTIC MICE. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991128 DOI: 10.1093/jcag/gwac036.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background An imbalance in host proteases has been implicated in inflammatory bowel disease (IBD). Recent evidence implicates microbial proteolytic activity (PA) in ulcerative colitis but whether it also plays a role in Crohn’s disease (CD) remains unclear. Purpose We therefore investigated the colitogenic potential and underlying pathways of proteolytic CD microbiota. Method Adult germ-free (GF) C57BL/6 mice were colonized with CD microbiota selected based on high (CD-HPA) or low fecal proteolytic activity (CD-LPA), and from healthy controls with LPA (HC-LPA), after which total fecal proteolytic, elastolytic and mucolytic activity were analyzed in the mice. Microbial community was assessed by 16S rRNA gene sequencing. Immune function and colonic injury were investigated by inflammatory gene expression (NanoString) and histology. Colitis severity and underlying pathways were investigated in C57BL/6, Nucleotide-binding Oligomerization Domain-2 knock-out (Nod2-/-), and Protease-Activated Receptor 2 (PAR2) cleavage resistant mice (R38E-PAR2) subjected to 2% dextran sodium sulfate in drinking water for 5 days followed by 2 days on water. Result(s) Colonization with HC-LPA or CD-LPA lowered baseline fecal proteolytic activity compared with GF mice, which was paralleled by lower acute inflammatory cell infiltrate. CD-HPA further increased proteolytic activity compared with GF mice. Fecal supernatants from CD-LPA or HC-LPA colonized mice had lower in vitro PAR2 cleavage compared to supernatants from GF and CD-HPA colonized mice. Several genes, such as Map kinases, Rhoa, Myd88, and Tollip, were increased in GF mice compared to colonized mice. 18 genes related to inflammation and barrier function (e.g., Mapk2k6, Tnf, Claudin1) were differentially expressed between CD-LPA and CD-HPA. CD-HPA mice had lower alpha diversity, distinct microbial profiles, and higher fecal proteolytic activity compared with CD-LPA. Abundance of several beneficial species (e.g., Akkermansia muciniphilia) was decreased while other taxa were increased (e.g., Hungattella hathewayi) in CD-HPA compared to CD-LPA. H. hathewayi as well as the serine protease K04772 were transcriptionally increased in fecal samples from CD-HPA colonized mice. C57BL/6 and Nod2-/- mice, but not R38E-PAR2 mice, colonized with CD-HPA developed earlier and more severe colitis compared with mice colonized with CD-LPA. Conclusion(s) CD proteolytic microbiota is proinflammatory through a PAR2 pathway. H. hathewayi correlates with the proinflammatory phenotype through the serine protease K04772 in this model. The results support a role of microbial PA in CD, which could constitute a biomarker for identifying patients who would benefit from anti-proteolytic therapies. Disclosure of Interest None Declared
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Affiliation(s)
| | | | | | | | | | | | - K Jackson
- Medicine,Chemical Engineering, McMaster University, Hamilton
| | | | | | - R Ramachandran
- Physiology and Pharmacology, Western University, London, Canada
| | - W Ruf
- Immunology and Microbiology, The Scripps Research Institute, La Jolla, United States,Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
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PRABHAHAR A, Kaur P, Kumar V, Kohli H, Ramachandran R. WCN23-0977 TO STUDY THE ASSOCIATION OF BONE MINERAL DENSITY WITH CLINICAL ACTIVITY IN ADULT-ONSET NEPHROTIC SYNDROME. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.589] [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: 03/22/2023] Open
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SAMRA T, Kumar V, Mahajan V, Ramachandran R, Puri G, Pal A, Naik B, Bhalla A, Dixit R. WCN23-0857 Utility of urinary biomarkers for diagnosis of acute kidney injury (AKI) in COVID-19. Kidney Int Rep 2023. [PMCID: PMC10025671 DOI: 10.1016/j.ekir.2023.02.989] [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: 03/22/2023] Open
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Pavithraa S, Ramachandran R, Mifsud DV, Meka JK, Lo JI, Chou SL, Cheng BM, Rajasekhar BN, Bhardwaj A, Mason NJ, Sivaraman B. VUV photoabsorption of thermally processed carbon disulfide and ammonia ice mixtures - Implications for icy objects in the solar system. Spectrochim Acta A Mol Biomol Spectrosc 2022; 283:121645. [PMID: 36037552 DOI: 10.1016/j.saa.2022.121645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Many icy bodies in the solar system have been found to contain a rich mixture of simple molecules on their surfaces. Similarly, comets are now known to be a reservoir of molecules ranging from water to amides. The processing of planetary/cometary ices leads to the synthesis of more complex molecules some of which may be the harbingers of life. Carbon disulphide (CS2) and ammonia (NH3) are known to be present on many icy satellites and comets. Reactions involving CS2 and NH3 may lead to the formation of larger molecules that are stable under space conditions. In this paper we present temperature dependent VUV spectra of pure CS2 in the ice phase, and of CS2 and NH3 ices deposited as (i) layered, and (ii) mixed ices at 10 K and warmed to higher temperatures until their sublimation. Pure CS2 ice is found to have a broad absorption in the VUV region, which is unique for a small molecule in the ice phase. In layered and mixed ices, the molecules tend to affect the phase change and sublimation temperature of each other and also leave behind a form of CS2-NH3 complex after thermal annealing. This study of CS2-NH3 ice systems in layered and mixed configurations would support the detection of these species/complexes in mixed molecular ices analogous to that on planetary and cometary surfaces.
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Affiliation(s)
- S Pavithraa
- Physical Research Laboratory, Ahmedabad, India
| | | | - D V Mifsud
- Centre for Astrophysics and Planetary Science, School of Physical Sciences, University of Kent, Canterbury CT2 7NH, UK; Institute for Nuclear Research (Atomki), Debrecen 4026, Hungary
| | - J K Meka
- Physical Research Laboratory, Ahmedabad, India
| | - J I Lo
- Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - S L Chou
- National Synchrotron Radiation Research Center, Taiwan
| | - Bing-Ming Cheng
- Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | | | | | - N J Mason
- Centre for Astrophysics and Planetary Science, School of Physical Sciences, University of Kent, Canterbury CT2 7NH, UK
| | - B Sivaraman
- Physical Research Laboratory, Ahmedabad, India.
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Mariyappan V, Sundaresan R, Chen SM, Ramachandran R. Ultrasensitive electrochemical sensor for the detection of carbamazepine based on gadolinium vanadate nanostructure decorated functionalized carbon nanofiber nanocomposite. Chemosphere 2022; 307:135803. [PMID: 35931253 DOI: 10.1016/j.chemosphere.2022.135803] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/04/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The gadolinium vanadate nanostructure decorated functionalized carbon nanofiber (GdVO4/f-CNF) nanocomposite was prepared by the hydrothermal method, which is fabricated on a glassy carbon electrode (GCE) for the determination of carbamazepine (CBZ). The structural morphology of the hydrothermally synthesized GdVO4/f-CNF material was investigated by several spectroscopy methods such as FESEM, HRTEM, EDS-mapping, XRD, XPS, and Raman. Moreover, the electrical conductivity of our synthesized material was inspected by the electrochemical impedance spectroscopy (EIS) analysis, and the electrochemical performance towards CBZ was inspected by the cyclic voltammetry (CV) and amperometry (AMP) analysis under optimized conditions. The AMP determination of CBZ exhibits the lowest level LOD of 0.0018 μM and a good linear range of 0.01-157 μM. Additionally, our proposed sensor was used to determine the CBZ in the pharmaceutical and, human urine samples which have exposed the acceptable recoveries.
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Affiliation(s)
- Vinitha Mariyappan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Ruspika Sundaresan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai, 625 011, Tamil Nadu, India
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Ramachandran R, Chen TW, Veerakumar P, Anushya G, Chen SM, Kannan R, Mariyappan V, Chitra S, Ponmurugaraj N, Boominathan M. Recent development and challenges in fuel cells and water electrolyzer reactions: an overview. RSC Adv 2022; 12:28227-28244. [PMID: 36320254 PMCID: PMC9531000 DOI: 10.1039/d2ra04853a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/01/2022] [Indexed: 11/07/2022] Open
Abstract
Water electrolysis is the most promising method for the production of large scalable hydrogen (H2), which can fulfill the global energy demand of modern society. H2-based fuel cell transportation has been operating with zero greenhouse emission to improve both indoor and outdoor air quality, in addition to the development of economically viable sustainable green energy for widespread electrochemical applications. Many countries have been eagerly focusing on the development of renewable as well as H2-based energy storage infrastructure to fulfill their growing energy demands and sustainable goals. This review article mainly discusses the development of different kinds of fuel cell electrocatalysts, and their application in H2 production through various processes (chemical, refining, and electrochemical). The fuel cell parameters such as redox properties, cost-effectiveness, ecofriendlyness, conductivity, and better electrode stability have also been highlighted. In particular, a detailed discussion has been carried out with sufficient insights into the sustainable development of future green energy economy.
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Affiliation(s)
- Rasu Ramachandran
- Department of Chemistry, The Madura College (Madurai Kamaraj University) Vidhya Nagar, T.P.K. Road Madurai 625011 India
| | - Tse-Wei Chen
- Department of Materials, Imperial College London London SW7 2AZ UK
| | | | - Ganesan Anushya
- Department of Physics, St. Joseph College of Engineering Sriperumbudur Chennai 602117 India
| | - Shen-Ming Chen
- Electroanalysis and Bio-electrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology Taipei 106 Taiwan
| | - Ramanjam Kannan
- Department of Chemistry, Sri KumaraguruparaSwamigal Arts College Srivaikuntam Thoothukudi-628619 India
| | - Vinitha Mariyappan
- Electroanalysis and Bio-electrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology Taipei 106 Taiwan
| | - Selvam Chitra
- Department of Chemistry, Alagappa Government Arts College Karaikudi 630003 India
| | | | - Muthusamy Boominathan
- Department of Chemistry, The Madura College (Madurai Kamaraj University) Vidhya Nagar, T.P.K. Road Madurai 625011 India
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Devi Sangeetha A, Gopalakrishnan K, Ramachandran R, Narasimhan M, Ramraj B. A descriptive study of onychoscopic features in various subtypes of onychomycosis. Med J Armed Forces India 2022; 78:S219-S225. [PMID: 36147430 PMCID: PMC9485850 DOI: 10.1016/j.mjafi.2021.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 03/21/2021] [Indexed: 11/23/2022] Open
Abstract
Background The diagnosis of onychomycosis is usually clinical and is confirmed by 40% KOH examination. A diagnostic dilemma occurs when KOH examination is negative despite strong clinical suspicion. Dermoscopic evaluation of the nail is referred to as onychoscopy. We attempted to assess the dermoscopic findings in Onychomycosis positive with KOH examination. Methods A cross sectional study was conducted in a tertiary care center including 122 patients with clinical suspicion of onychomycosis with KOH positivity. After assessment of risk factors and gross nail examination, onychoscopic examination was done to identify the presence of the specific features. Results Primary findings of onychoscopic examination were 'spiked pattern' in 80.3% subjects, of which 95 were distal lateral subungual onychomycosis (DLSO), 8 of total dystrophic onychomycosis (TDO). True leukonychia was seen in the single patient of proximal subungual onychomycosis (PSO) and pseudoleukonychia in the single patient of white superficial onychomycosis (WSO). Distal irregular termination was observed in 23% of subjects - 8 from DLSO and in all 20 patients of TDO. 'Ruin appearance' was observed in all 20 patients of TDO, 56 patients with DLSO and not seen in other types of onychomycosis (OM). Presence of spiked pattern, Longitudinal striae, Distal irregular termination and Ruin appearance were found to be statistically significant (p < 0.001). Conclusion In suspected onychomycosis, specific onychoscopic findings such as Spiked pattern, Longitudinal striae, Ruin appearance and Distal irregular termination can be used as supporting evidence for diagnosing onychomycosis clinically and initiating antifungal therapy if mycological testing is unavailable or negative.
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Affiliation(s)
- A. Devi Sangeetha
- Junior Resident (Dermatology), SRM Medical College & Research Centre, SRM Nagar, Tamil Nadu, India
| | - K. Gopalakrishnan
- Associate Professor (Dermatology), SRM Medical College & Research Centre, SRM Nagar, Tamil Nadu, India
| | - R. Ramachandran
- Associate Professor (Dermatology), SRM Medical College & Research Centre, SRM Nagar, Tamil Nadu, India
| | - Murali Narasimhan
- Professor & Head (Dermatology), SRM Medical College & Research Centre, SRM Nagar, Tamil Nadu, India
| | - Balaji Ramraj
- Associate Professor (Community Medicine), SRM Medical College & Research Centre, SRM Nagar, Tamil Nadu, India
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KUMAR A, Nada R, Ramachandran R. POS-028 Rare genetic alterations in patients with C3 glomerulopathy-something to ponder upon. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.04.048] [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: 11/17/2022] Open
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14
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Ramachandran R, Pavithraa S, Meka JK, Rahul KK, Lo JI, Chou SL, Cheng BM, Rajasekhar BN, Bhardwaj A, Mason NJ, Sivaraman B. Vacuum ultraviolet photoabsorption spectra of icy isoprene and its oligomers. Spectrochim Acta A Mol Biomol Spectrosc 2022; 268:120586. [PMID: 34872862 DOI: 10.1016/j.saa.2021.120586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Isoprene and its oligomers, terpenes, are expected to be present, along with other complex organic molecules in the diverse environments of the ISM and in our solar system. Due to insufficient spectral information of these molecules at low temperature, detection and understanding the importance of these molecules has been rather incomplete. For this purpose, we have carried out the vacuum ultraviolet (VUV) photoabsorption measurements on pure molecular ices of isoprene and a few simple terpenes: limonene, α-pinene and β-pinene by forming icy mantles on cold dust analogs. From these experiments, we report the first low temperature (10 K) VUV spectra of isoprene and its oligomers limonene, α-pinene and β-pinene. VUV photoabsorption spectra of all the molecules reported here reveal similarities in the ice and gas phase as expected, with an exception of isoprene where a prominent red shift is observed in the ice phase absorption. This unqiue property of isoprene along with distinctive absorption at longer wavelengths supports its candidature for detection on icy bodies.
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Affiliation(s)
| | - S Pavithraa
- Department of Applied Chemistry and Institute of Molecular Sciences, National Chiao Tung University, Hsinchu, Taiwan
| | - J K Meka
- Physical Research Laboratory, Ahmedabad, India
| | - K K Rahul
- Physical Research Laboratory, Ahmedabad, India
| | - J-I Lo
- Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - S-L Chou
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - B-M Cheng
- Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - B N Rajasekhar
- Atomic and Molecular Physics Division, Bhabha Atomic Research Center, Mumbai, India
| | | | - N J Mason
- School of Physical Sciences, University of Kent, Canterbury, UK
| | - B Sivaraman
- Physical Research Laboratory, Ahmedabad, India.
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15
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Chowdhury Q, Ramachandran R, Ozdemir O, Lawrence M, Abdelhamed H. Characterization of the Role of FruR in Listeria monocytogenes Virulence and Identification of Its Regulons. Int J Infect Dis 2022. [DOI: 10.1016/j.ijid.2021.12.184] [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: 10/19/2022] Open
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16
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Lazzaro DR, Ramachandran R, Cohen E, Galetta SL. Covid-19 vaccination and possible link to Herpes zoster. Am J Ophthalmol Case Rep 2022; 25:101359. [PMID: 35097240 PMCID: PMC8789478 DOI: 10.1016/j.ajoc.2022.101359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 04/29/2021] [Revised: 10/25/2021] [Accepted: 01/22/2022] [Indexed: 11/19/2022] Open
Abstract
PURPOSE To report 3 otherwise healthy patients with Herpes zoster reactivation shortly after administration of a mRNA vaccine against the novel COVID-19 virus. OBSERVATIONS Patient 1 is a 54 year old who presented with Herpes zoster meningitis complicated by enhancing nodular leptomeningeal lesions of the spinal cord. The subsequent two patients had Herpes zoster ophthalmicus of the cornea (Case 2) and eyelid (Case 3). All three presented within 2 weeks of receiving the Pfizer/BioNTech COVID-19 vaccine. CONCLUSIONS Herpes zoster may be a side effect of m RNA vaccination against the Sars-CoV2 vaccine and requires further investigation.
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Affiliation(s)
- D R Lazzaro
- NYU Langone Medical Center: NYU Langone Health, United States
| | - R Ramachandran
- NYU Langone Medical Center: NYU Langone Health, United States
| | - E Cohen
- NYU Langone Medical Center: NYU Langone Health, United States
| | - S L Galetta
- NYU Langone Medical Center: NYU Langone Health, United States
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17
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Mariyappan V, Chen SM, Murugan K, Jeevika A, Jeyapragasam T, Ramachandran R. Electrochemical sensor based on cobalt ruthenium sulfide nanoparticles embedded on boron nitrogen co-doped reduced graphene oxide for the determination of nitrite. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128271] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Mariyappan V, Karuppusamy N, Chen SM, Raja P, Ramachandran R. Electrochemical determination of quercetin using glassy carbon electrode modified with WS 2/GdCoO 3 nanocomposite. Mikrochim Acta 2022; 189:118. [PMID: 35195788 DOI: 10.1007/s00604-022-05219-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/03/2022] [Indexed: 11/28/2022]
Abstract
A WS2/GdCoO3 nanocomposite was successfully prepared using hydrothermal-assisted synthesis. Our prepared WS2/GdCoO3 nanocomposite was fabricated on a glassy carbon electrode (GCE) for the detection of quercetin (QCT). The WS2/GdCoO3 nanomaterial was characterized by powder XRD, micro-Raman, FT-IR, XPS, FE-SEM, and HR-TEM, which proved that WS2 nanoplates were finely dispersed on the surface of the GdCoO3 nanoflakes. The electrocatalytic performance of WS2/GdCoO3 was investigated by the EIS technique, and it exhibited a small semi-circle, which confirms that it has a large active surface area and high electrical conductivity. The electrochemical behavior of QCT at the WS2/GdCoO3 sensor was explored by using the CV and DPV methods. The proposed electrochemical sensor exhibited excellent electrochemical response toward QCT with a wide linear range of 0.001 to 329 µM, low limit of detection (LOD) of 0.003 µM, and limit of quantification (LOQ) of 0.0101 µM. The sensor also displayed excellent selectivity, sensitivity, reproducibility, and stability. Additionally, the WS2/GdCoO3 sensor was utilized for the detection of QCT in apple juice and grape juice samples, and it exhibited good recovery results.
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Affiliation(s)
- Vinitha Mariyappan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Naveen Karuppusamy
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
| | - Paulsamy Raja
- Department of Chemistry, Vivekananda College of Arts and Science, Agastheeswaram, , Kanyakumari, 629 004, Tamil Nadu, India
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai, 625 011, Tamil Nadu, India
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19
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GAUR M, Ramachandran R, Kenwar D, Valliappan M, Kohli Singh H. POS-769 ALLOGRAFT OUTCOMES, SAFETY AND EFFICACY OF QUINOLONE BASED AND RIFAMPIN BASED REGIMENS FOR THE TREATMENT OF TUBERCULOSIS IN KIDNEY TRANSPLANT RECIPIENTS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.805] [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: 10/19/2022] Open
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20
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Karuppusamy N, Mariyappan V, Chen SM, Ramachandran R. A novel electrochemical sensor for the detection of enrofloxacin based on a 3D flower-like metal tungstate-incorporated reduced graphene oxide nanocomposite. Nanoscale 2022; 14:1250-1263. [PMID: 34994758 DOI: 10.1039/d1nr06343j] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In recent times, metal tungstates have received a lot of attention in various research fields. Accordingly, the CaWO4/RGO (CW/RGO) nanocomposite was prepared by a facile hydrothermal method. The electrocatalytic performance of the hydrothermally prepared CW/RGO nanocomposite was used for the electrochemical detection of the antibiotic medicine enrofloxacin (ENF). The electrocatalytic oxidation performance of ENF was examined by cyclic voltammetry (CV) and amperometry (AMP) techniques. The CV results showed the lowest anodic peak potential and the enhanced anodic peak current response compared to the other modified electrodes. Mainly, our newly proposed sensor exhibited excellent electrochemical performance with the lowest limit of detection (LOD) of 0.021 μM, and a significant linear range of 0.001-115 μM. Additionally, our proposed sensor exhibited good selectivity, great long-term stability, and excellent reproducibility. Then, our proposed sensor was successfully applied to detect the amount of ENF in a milk sample and river water, which exhibited good satisfactory results.
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Affiliation(s)
- Naveen Karuppusamy
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Vinitha Mariyappan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625 011, Tamil Nadu, India
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21
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Chen TW, Kalimuthu P, Veerakumar P, Lin KC, Chen SM, Ramachandran R, Mariyappan V, Chitra S. Recent Developments in Carbon-Based Nanocomposites for Fuel Cell Applications: A Review. Molecules 2022; 27:molecules27030761. [PMID: 35164025 PMCID: PMC8915178 DOI: 10.3390/molecules27030761] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 11/24/2021] [Revised: 01/15/2022] [Accepted: 01/19/2022] [Indexed: 11/16/2022] Open
Abstract
Carbon-based nanocomposites have developed as the most promising and emerging materials in nanoscience and technology during the last several years. They are microscopic materials that range in size from 1 to 100 nanometers. They may be distinguished from bulk materials by their size, shape, increased surface-to-volume ratio, and unique physical and chemical characteristics. Carbon nanocomposite matrixes are often created by combining more than two distinct solid phase types. The nanocomposites that were constructed exhibit unique properties, such as significantly enhanced toughness, mechanical strength, and thermal/electrochemical conductivity. As a result of these advantages, nanocomposites have been used in a variety of applications, including catalysts, electrochemical sensors, biosensors, and energy storage devices, among others. This study focuses on the usage of several forms of carbon nanomaterials, such as carbon aerogels, carbon nanofibers, graphene, carbon nanotubes, and fullerenes, in the development of hydrogen fuel cells. These fuel cells have been successfully employed in numerous commercial sectors in recent years, notably in the car industry, due to their cost-effectiveness, eco-friendliness, and long-cyclic durability. Further; we discuss the principles, reaction mechanisms, and cyclic stability of the fuel cells and also new strategies and future challenges related to the development of viable fuel cells.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Palraj Kalimuthu
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia;
| | - Pitchaimani Veerakumar
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan;
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
- Correspondence: (P.V.); (S.-M.C.); (R.R.)
| | - King-Chuen Lin
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan;
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Shen-Ming Chen
- Electroanalysis and Bio-electrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan;
- Correspondence: (P.V.); (S.-M.C.); (R.R.)
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidhya Nagar, T.P.K. Road, Madurai 625011, India
- Correspondence: (P.V.); (S.-M.C.); (R.R.)
| | - Vinitha Mariyappan
- Electroanalysis and Bio-electrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan;
| | - Selvam Chitra
- Department of Chemistry, Alagappa Government Arts College, Karaikudi 630003, India;
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22
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Chen TW, Anushya G, Chen SM, Kalimuthu P, Mariyappan V, Gajendran P, Ramachandran R. Recent Advances in Nanoscale Based Electrocatalysts for Metal-Air Battery, Fuel Cell and Water-Splitting Applications: An Overview. Materials (Basel) 2022; 15:ma15020458. [PMID: 35057176 PMCID: PMC8778511 DOI: 10.3390/ma15020458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 01/09/2023]
Abstract
Metal-air batteries and fuel cells are considered the most promising highly efficient energy storage systems because they possess long life cycles, high carbon monoxide (CO) tolerance, and low fuel crossover ability. The use of energy storage technology in the transport segment holds great promise for producing green and clean energy with lesser greenhouse gas (GHG) emissions. In recent years, nanoscale based electrocatalysts have shown remarkable electrocatalytic performance towards the construction of sustainable energy-related devices/applications, including fuel cells, metal-air battery and water-splitting processes. This review summarises the recent advancement in the development of nanoscale-based electrocatalysts and their energy-related electrocatalytic applications. Further, we focus on different synthetic approaches employed to fabricate the nanomaterial catalysts and also their size, shape and morphological related electrocatalytic performances. Following this, we discuss the catalytic reaction mechanism of the electrochemical energy generation process, which provides close insight to develop a more efficient catalyst. Moreover, we outline the future perspectives and challenges pertaining to the development of highly efficient nanoscale-based electrocatalysts for green energy storage technology.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Ganesan Anushya
- Department of Physics, S.A.V. Sahaya Thai Arts and Science (Women) College, Sahayam Nagar, Kumarapuram Road, Vadakkankulam, Tirunelveli 627116, India;
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
- Correspondence: (S.-M.C.); (R.R.)
| | - Palraj Kalimuthu
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia;
| | - Vinitha Mariyappan
- Electroanalysis and Bioelectrochemistry Laboratory, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
| | - Pandi Gajendran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625011, India;
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625011, India;
- Correspondence: (S.-M.C.); (R.R.)
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23
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Narasimhan M, Ramachandran R, Cornelius Gnanadurai JS, T Durai P, Kalaivani P, Nithila C. Lax skin and blurring of vision- A case report of pseudoxanthoma elasticum. J Family Med Prim Care 2022; 11:7972-7974. [PMID: 36994043 PMCID: PMC10040992 DOI: 10.4103/jfmpc.jfmpc_2337_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 09/14/2022] [Accepted: 10/12/2022] [Indexed: 01/31/2023] Open
Abstract
Increased laxity of the skin can be caused by aging, significant weight loss, or defects in the elastic tissue. A 38-year-old female presented with increased laxity of the skin over the neck, thighs, and abdomen for 6 years, associated with headache and blurring of vision for a week. On cutaneous examination, prominent skin folds, laxity, and wrinkles were noted over the neck, abdomen, thighs, and groin, with yellowish papules along the neck creases. Ocular examination revealed features suggestive of angioid streaks. Skin biopsy showed fragmented elastic fibers and intervening calcium deposits on Verhoeff Van Gieson and Von Kossa stains. Based on these findings, a diagnosis of pseudoxanthoma elasticum (PXE) was made. The patient was started on oral and topical sunscreens and eye protection and advised regular follow-up. Diagnosing the condition early based on skin findings can help prevent further multi-system manifestations by taking appropriate preventive measures as this condition is progressive and has no cure.
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24
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Anushya G, Mahesh R, Freeda TH, Ramachandran R, Raju G. Effect of Aegle marmelos on the growth of brushite crystals. Clin Phytosci 2021. [DOI: 10.1186/s40816-021-00280-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The urinary stone formation is a very common health problem due to the prolonged medication. Calcium Hydrogen Phosphate Dihydrate (CaHPO4.2H2O, CHPD and Brushite) is one of the major constituent of urinary stone crystals. The formation and deposition of brushite crystals is the central cause of recurrent kidney stone disease among the global population. The present study aims to investigate the effect of Aegle marmelos leaves on the growth of brushite crystals to explicate the inhibitory effect of urinary stones from a different point of view.
Methods
The CHPD crystals were grown by the Single Diffusion Gel growth technique. In order to inhibit the formation of urinary stones, CHPD crystals are grown in the laboratory in the pure form and by adding the prolonged medicine A. marmelos taken especially by diabetic patients. A comparative study of the pure and A. marmelos leaves added crystals has been carried out using the Growth factor, Powder X-ray diffraction, Microstructural parameters, FTIR and SEM-EDAX.
Results
Total mass of the grown crystals is found to decrease with increasing concentrations of leaf extract of the A. marmelos. On comparing with undoped, crystalline size of the A. marmelos doped samples is reduced. Disappearance of absorption band and peak shift in the FTIR shows the incorporation of functional groups of A. marmelos. The morphology changes of the treated crystals are assessed in SEM.
Conclusions
The result shows that herbal extracts prepared from A. marmelos have good inhibitory effect on the growth of the brushite urinary stone crystals considered.
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Karuppusamy N, Mariyappan V, Chen SM, Keerthi M, Ramachandran R. A simple electrochemical sensor for quercetin detection based on cadmium telluride nanoparticle incorporated on boron, sulfur co-doped reduced graphene oxide composite. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Sundaresan R, Mariyappan V, Chen SM, Keerthi M, Ramachandran R. Electrochemical sensor for detection of tryptophan in the milk sample based on MnWO4 nanoplates encapsulated RGO nanocomposite. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126889] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Chen TW, Kalimuthu P, Anushya G, Chen SM, Mariyappan V, Ramachandran R. Recent Progress in the Development of Advanced Functionalized Electrodes for Oxygen Evolution Reaction: An Overview. Materials (Basel) 2021; 14:4420. [PMID: 34442943 PMCID: PMC8400293 DOI: 10.3390/ma14164420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/01/2021] [Accepted: 08/03/2021] [Indexed: 12/02/2022]
Abstract
Presently, the global energy demand for increasing clean and green energy consumption lies in the development of low-cost, sustainable, economically viable and eco-friendly natured electrochemical conversion process, which is a significant advancement in different morphological types of advanced electrocatalysts to promote their electrocatalytic properties. Herein, we overviewed the recent advancements in oxygen evolution reactions (OERs), including easy electrode fabrication and significant action in water-splitting devices. To date, various synthetic approaches and modern characterization techniques have effectively been anticipated for upgraded OER activity. Moreover, the discussed electrode catalysts have emerged as the most hopeful constituents and received massive appreciation in OER with low overpotential and long-term cyclic stability. This review article broadly confers the recent progress research in OER, the general mechanistic approaches, challenges to enhance the catalytic performances and future directions for the scientific community.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Palraj Kalimuthu
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia;
| | - Ganesan Anushya
- Department of Physics, S.A.V. Sahaya Thai Arts and Science (Women) College, Sahayam Nagar, Kumarapuram Road, Vadakkankulam, Tirunelveli 627116, India;
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
| | - Vinitha Mariyappan
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625011, India
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Jegadish N, Fernandes SD, Narasimhan M, Ramachandran R. A descriptive study of the clinical and etiological profile of balanoposthitis. J Family Med Prim Care 2021; 10:2265-2271. [PMID: 34322423 PMCID: PMC8284224 DOI: 10.4103/jfmpc.jfmpc_2467_20] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/21/2021] [Accepted: 04/09/2021] [Indexed: 11/24/2022] Open
Abstract
Background: Balanoposthitis is defined as an inflammatory condition of glans penis and prepuce. There are wide variety of etiologies including both infectious and noninfectious conditions. This study attempts to throw light on information regarding clinical and microbiological aspects of balanoposthitis. Objectives: To study various clinical patterns, etiologies, and predisposing factors of balanoposthitis. Methodology: A descriptive study was undertaken on 106 cases who presented to sexually transmitted disease (STD) clinic with balanoposthitis between November 2017 and April 2019. A detailed history, physical examination, and investigations like KOH mount, leishman staining, gram staining, dark field microscopy, cultures, and other investigations were done wherever indicated. The data collected was tabulated and analyzed. Results: In our study, infectious etiology was the most common and was found in 77.36% cases. About 13.41% of cases with infectious balanoposthitis had multiple etiological agents. Noninfectious etiology was found in 22.64% cases. The most common infectious cause of balanoposthitis was candida, noted in 59.76% cases, followed by herpes simplex virus (19.51%), human papilloma virus (13.41%), and scabies (8.54%). Among noninfectious etiologies, adverse drug reaction (4.72% of total cases) was the most common, followed by lichen planus (3.77%) and psoriasis (3.77%). There was significantly higher incidence of phimosis in diabetic patients with candidal balanoposthitis. Conclusion: Identifying the etiology facilitates early treatment and hence reduces the infectivity and transmission of disease and also the disease complications like phimosis. In addition, multiple infectious etiologies should always be kept in mind while evaluating STDs.
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Affiliation(s)
- N Jegadish
- Department of Dermatology, S. R. M Medical College Hospital and Research Centre, Potheri, Chennai, Tamilnadu, India
| | - S D Fernandes
- Department of Dermatology, S. R. M Medical College Hospital and Research Centre, Potheri, Chennai, Tamilnadu, India
| | - Murali Narasimhan
- Department of Dermatology, S. R. M Medical College Hospital and Research Centre, Potheri, Chennai, Tamilnadu, India
| | - R Ramachandran
- Department of Dermatology, S. R. M Medical College Hospital and Research Centre, Potheri, Chennai, Tamilnadu, India
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29
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Sachdeva KS, Arora N, Solanki R, Singla R, Sarin R, Bhatnagar A, Khanna A, Atahavale A, Shridhar R, Barua SR, Parmar M, Farooq SI, Ramachandran R, Alavadi U, Swamickan R, Tonsing J, Patel Y, Singla N. Strengthened capacity of India´s bedaquiline Conditional Access Programme for introducing new drugs and regimens. Int J Tuberc Lung Dis 2021; 24:1067-1072. [PMID: 33126941 DOI: 10.5588/ijtld.20.0136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Addressing TB in India is critical to meeting global targets. With the scale-up of diagnostic networks and the availability of new TB drugs, India had the opportunity to improve the detection and treatment outcomes in drug-resistant TB (DR-TB).OBJECTIVE: To document how the introduction of new drugs and regimens is helping India improve the care of DR-TB patients.DESIGN: In 2016, India´s National TB Programme (NTP) introduced bedaquiline (BDQ) under a Conditional Access Programme (BDQ-CAP) at six sites after providing extensive training and strengthening laboratory testing, pre-treatment evaluation, active drug safety monitoring and management (aDSM) and follow-up systems.RESULTS: An interim analysis reflected earlier and better culture conversion rates: 83% of the 620 patients converted within a median time of 60 days. However, 248 serious adverse events were reported, including 73 deaths (12%) and 100 cardiotoxicity events (16.3%). Encouraged by the evidence of safety and efficacy of BDQ, the NTP took steps to systematically expand its access to cover the entire population by 2018.CONCLUSION: The cautious yet focused approach used to introduce BDQ under BDQ-CAP paved the way for the rapid introduction of delamanid, as well as the shorter treatment regimen and the all-oral regimen for DR-TB.
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Affiliation(s)
- K S Sachdeva
- Central TB Division, Ministry of Health and Family Welfare, Government of India, New Delhi
| | - N Arora
- International Union Against Tuberculosis and Lung Disease South East Asia, New Delhi
| | - R Solanki
- BJ Medical College and Hospital, Ahmedabad
| | - R Singla
- National Institute for TB and Respiratory Disease, New Delhi
| | - R Sarin
- National Institute for TB and Respiratory Disease, New Delhi
| | - A Bhatnagar
- Rajan Babu Institute for Pulmonary Medicine and Tuberculosis, New Delhi
| | - A Khanna
- Government of National Capital Territory of Delhi, New Delhi
| | - A Atahavale
- King Edward Memorial College & Group of TB Hospital, Mumbai
| | - R Shridhar
- Government Hospital of Thoracic Medicine, Chennai
| | | | - M Parmar
- World Health Organisation, India Country Office, New Delhi
| | - S I Farooq
- International Union Against Tuberculosis and Lung Disease South East Asia, New Delhi
| | - R Ramachandran
- World Health Organisation, India Country Office, New Delhi
| | - U Alavadi
- United States Agency for International Development India, New Delhi, India
| | - R Swamickan
- United States Agency for International Development India, New Delhi, India
| | - J Tonsing
- International Union Against Tuberculosis and Lung Disease South East Asia, New Delhi
| | - Y Patel
- Central TB Division, Ministry of Health and Family Welfare, Government of India, New Delhi
| | - N Singla
- National Institute for TB and Respiratory Disease, New Delhi
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Chen TW, Ramachandran R, Chen SM, Anushya G, Divya Rani S, Mariyappan V, Elumalai P, Vasimalai N. High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview. Nanomaterials (Basel) 2021; 11:1006. [PMID: 33919855 PMCID: PMC8070796 DOI: 10.3390/nano11041006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022]
Abstract
Perovskite-based electrode catalysts are the most promising potential candidate that could bring about remarkable scientific advances in widespread renewable energy-storage devices, especially supercapacitors, batteries, fuel cells, solid oxide fuel cells, and solar-cell applications. This review demonstrated that perovskite composites are used as advanced electrode materials for efficient energy-storage-device development with different working principles and various available electrochemical technologies. Research efforts on increasing energy-storage efficiency, a wide range of electro-active constituents, and a longer lifetime of the various perovskite materials are discussed in this review. Furthermore, this review describes the prospects, widespread available materials, properties, synthesis strategies, uses of perovskite-supported materials, and our views on future perspectives of high-performance, next-generation sustainable-energy technology.
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Affiliation(s)
- Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Rasu Ramachandran
- Department of Chemistry, The Madura College, Vidya Nagar, Madurai 625011, India;
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei, University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
| | - Ganesan Anushya
- Department of Physics, S.A.V. Sahaya Thai Arts and Science (Women) College, Sahayam Nagar, Kumarapuram Road, Vadakkankulam, Tirunelveli 627116, India;
| | | | - Vinitha Mariyappan
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei, University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan;
| | - Perumal Elumalai
- Department of Green Energy Technology, Pondicherry University, Puducherry 605014, India;
| | - Nagamalai Vasimalai
- Department of Chemistry, B.S. Abdur Rahman Cresecent Institute of Science and Technology, Chennai 600048, India;
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SULAIMAN S, Ramachandran R, Prabhahar A, Kohli H. POS-774 BORTEZOMIB BASED CHEMOTHERAPY AND BONE MARROW FOLLOWED BY RENAL TRANSPLANTATION IN MULTIPLE MYELOMA: CASE REPORT AND SYSTEMATIC REVIEW. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.806] [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: 10/21/2022] Open
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Ramachandran R, Arutchelvan K. Named entity recognition on bio-medical literature documents using hybrid based approach. J Ambient Intell Humaniz Comput 2021:1-10. [PMID: 33723489 PMCID: PMC7947151 DOI: 10.1007/s12652-021-03078-z] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 03/02/2021] [Indexed: 06/02/2023]
Abstract
There have been many changes in the medical field due to technological advances. The progression in technologies provides lot of opportunities to extract valuable insights from huge amount of unstructured data. The literature documents published by the researchers in medical domain consists enormous amount of knowledge. Many organizations are involving in retrieving the hidden information from the literature documents. Extracting the drug names, diseases, symptoms, route of administration, species and dosage forms from the textual document is an easy task due to the innovation of technologies in the Natural Language Processing. In this article, a new hybrid based approach is proposed to identify named entity from the medical literature documents. New dictionary has been built for route of administration, dosage forms and symptoms to annotate the entities in the medical documents. The annotated entities are trained by the blank Spacy machine learning model. The trained model provide a decent accuracy when compared with the existing model. The hybrid model is validated with the dictionary and human (optional)to calculate the confusion matrix. It is able to identify more entities than the prevailing model. The average F1 score for five entities of the proposed hybrid based approach 73.79%.
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Affiliation(s)
- R. Ramachandran
- Department of Computer and Information Science, Annamalai University, Tamil Nadu, Chidambaram, India
| | - K. Arutchelvan
- Department of Computer and Information Science, Annamalai University, Tamil Nadu, Chidambaram, India
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Kim MK, Ramachandran R, Séguin CA. Spatiotemporal and functional characterisation of transient receptor potential vanilloid 4 (TRPV4) in the murine intervertebral disc. Eur Cell Mater 2021; 41:194-203. [PMID: 33620083 DOI: 10.22203/ecm.v041a14] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The molecular regulators of mechano-transduction in intervertebral disc (IVD) cells are not well understood. The aim of the present study was to characterise the expression and function of the mechano-sensitive ion channel TRPV4 in the IVD. A novel transgenic reporter mouse, in which the endogenous Trpv4 locus drove the expression of LacZ, was used to localise Trpv4 expression at specific stages of spine development [embryonic day (E) 8.5, 12.5, 17.5, postnatal day 1] and time points following skeletal maturity (2.5, 6, 9 and 12 months). The TRPV4-specific agonist GSK1016790A and antagonist GSK2193874 were used to assess the functional response of annulus fibrosus (AF) cells using epifluorescence imaging with Ca2+-sensitive Fura-2 dye and F-actin staining. The effects of TRPV4 agonism and antagonism in mechanically stimulated AF cells were quantified by gene expression analysis. Trpv4 expression was specific to the developing notochord and intervertebral mesenchyme at E12.5. At 2.5, 6 and 9 months, Trpv4 expression was detected in the nucleus pulposus, inner AF, cartilage endplate and vertebral growth plate. AF cells treated with GSK1016790A demonstrated heterogeneity in TRPV4-dependent Ca2+ responses (no response, calcium oscillation or sustained response). TRPV4-induced Ca2+ signalling was associated with Rho/ROCK-dependent actin cytoskeleton remodelling and stress-fibre formation. In AF cells, cyclic-tensile-strain-induced changes in Acan and Prg4 expression were mediated by TRPV4 channel activation. These data establish TRPV4 as an important mechano- sensor regulating IVD mechano-biology.
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Affiliation(s)
| | | | - C A Séguin
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, N6A 5C1,
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Rebesco G, Ramachandran R, Bae S, Dobelbower M, McDonald A, Spencer S, Willey C, Bonner J, Keene K. A Pilot Study Investigating the Opioid Prescribing Patterns in an Academic Radiation Oncology Clinic. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1420] [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: 10/23/2022]
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Ramachandran R, Vinothkumar A, Sankarganesh D, Suriyakalaa U, Aathmanathan VS, Kamalakkannan S, Nithya V, Angayarkanni J, Archunan G, Akbarsha MA, Achiraman S. Detection of estrous biomarkers in the body exudates of Kangayam cattle (Bos indicus) from interplay of hormones and behavioral expressions. Domest Anim Endocrinol 2020; 72:106392. [PMID: 32105888 DOI: 10.1016/j.domaniend.2019.106392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/25/2019] [Accepted: 09/02/2019] [Indexed: 12/30/2022]
Abstract
Behavioral expressions and biochemical composition of body exudates are significantly altered in concert with the endocrine status, which are all clear indicators of physiological conditions of animals. In this study, we sought to infer about the reproductive physiological status of Kangayam cattle (Bos indicus) by analyzing behaviors, endocrine pattern, and body exudates and further to discover estrous biomarkers so as to facilitate timely artificial insemination/mating and to aid in aspects of conservation of the species. Therefore, in this study, we followed Kangayam cows through pre-estrous to post-estrous phases to correlate the endocrine dependence of biochemical constituents in urine and cervical mucus and sought to identify estrous biomarkers. Behavioral estrus was confirmed in 10 cows, from which urine samples were collected and subjected to determination of LH, FSH, estrogens, progesterone, proteins, and lipids. Furthermore, urinary fatty acids and proteins were profiled using gas chromatography and SDS-PAGE, respectively. The volatile compounds in the urine and cervical mucus were identified by gas chromatography-mass spectrometry analysis. The data revealed that LH, FSH, and estrogen levels increased significantly in estrous urine compared with nonestrous urine, whereas progesterone status was vice versa (P < 0.05). The lipid content was also significantly higher in estrous urine than in pre- and post-estrous urines (P < 0.05). There were also cyclical variations of volatiles and fatty acid profiles across phases of the estrous cycle. More acidic compounds were present in estrous urine, rendering it more acidic, than in pre- and post-estrous urines. Interestingly, oleic acid, which was present as a fatty acid in estrous and post-estrous urines, appeared to be a volatile in post-estrous urine and estrous cervical mucus. In addition, octanoic and butanoic acids were specific to both estrous urine and cervical mucus, indicating their possible candidature as estrous biomarkers. SDS-PAGE analysis showed pronounced expression of a 98 kDa protein in post-estrous urine, which in matrix-assisted laser desorption ionization-time of flight mass spectrometry was identified as albumin. Our results demonstrate multiple biomarkers in estrous urine and specific volatiles in cervical mucus that offer scope to develop viable estrus detection kits for Kangayam cows.
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Affiliation(s)
- R Ramachandran
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India; Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - A Vinothkumar
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India
| | - D Sankarganesh
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India; Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu 626126, India
| | - U Suriyakalaa
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India; Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - V S Aathmanathan
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India
| | - S Kamalakkannan
- Department of Zoology, Bishop Heber College, Tiruchirappalli, Tamil Nadu 620017, India
| | - V Nithya
- Department of Animal Health and Management, Alagappa University, Karaikudi, Tamil Nadu 630003, India
| | - J Angayarkanni
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - G Archunan
- Pheromone Technology Laboratory, Department of Animal Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India
| | - M A Akbarsha
- Research Co-ordinator, National College (Autonomous), Tiruchirappalli, Tamilnadu 620001, India
| | - S Achiraman
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India.
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Girimaji N, Duseja R, Kohli H, Ramachandran R. SAT-400 RITUXIMAB IN THE TREATMENT OF COLLAPSING FOCAL SEGMENTAL GLOMERULOSCLEROSIS- A CASE SERIES. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.424] [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: 10/24/2022] Open
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prabakaran MD R, Gupta K, sharma A, Kohli H, Ramachandran R. SUN-293 LOW-DOSE VALGANCICLOVIR IS AS EFFECTIVE AS THE STANDARD DOSE PROPHYLAXIS FOR CYTOMEGALOVIRUS IN RENAL TRANSPLANT RECIPIENTS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.830] [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: 10/24/2022] Open
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NAYAK S, Prabhahar A, Bahuguna P, Gupta K, Kohli H, Ramachandran R. SUN-003 ONLINE HEMODIAFILTRATION (POST-DILUTION) AS COMPARED TO HIGH FLUX HEMODIALYSIS DOES NOT IMPROVE OUTCOMES IN COMMUNITY ACQUIRED AKI WITH SIRS- A RANDOMISED CONTROLLED TRIAL. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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39
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Ramachandran R, Bharati J, Kohli H. SUN-372 CD 19 targeted Rituximab is safe and effective in the management of Steroid dependent/resistant Podocytopathy. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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40
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INAMDAR N, Prabhahar A, Tomer S, Bansal A, Gorsi U, Arora S, Gupta K, Kohli H, Ramachandran R. SAT-016 ENDOTHELIAL DYSFUNCTION REVERSES WITH RENAL FUNCTION RECOVERY IN PATIENTS WITH DIALYSIS REQUIRING COMMUNITY-ACQUIRED AKI WITH SIRS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.020] [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: 10/24/2022] Open
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41
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Gupta K, Girimaji N, Ramachandran R, Rathi M, Rakha A, Sharma A, Duseja R. SAT-402 STUDY OF T-REGULATORY CELLS AND B-REGULATORY CELLS IN LUPUS NEPHRITIS: A PROSPECTIVE CONTROLLED STUDY. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.426] [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: 10/24/2022] Open
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42
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Murhekar M, Joshua V, Kanagasabai K, Shete V, Ravi M, Ramachandran R, Sabarinathan R, Kirubakaran B, Gupta N, Mehendale S. Epidemiology of dengue fever in India, based on laboratory surveillance data, 2014–2017. Int J Infect Dis 2019; 84S:S10-S14. [DOI: 10.1016/j.ijid.2019.01.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 01/05/2019] [Accepted: 01/07/2019] [Indexed: 11/17/2022] Open
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Prudenzano D, Lique F, Ramachandran R, Bizzocchi L, Caselli P. Collisional excitation of NH( 3Σ -) by Ar: A new ab initio 3D potential energy surface and scattering calculations. J Chem Phys 2019; 150:214302. [PMID: 31176333 DOI: 10.1063/1.5097651] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Collisional excitation of light hydrides is important to fully understand the complex chemical and physical processes of atmospheric and astrophysical environments. Here, we focus on the NH(X3Σ-)-Ar van der Waals system. First, we have calculated a new three-dimensional Potential Energy Surface (PES), which explicitly includes the NH bond vibration. We have carried out the ab initio calculations of the PES employing the open-shell single- and double-excitation couple cluster method with noniterative perturbational treatment of the triple excitations. To achieve a better accuracy, we have first obtained the energies using the augmented correlation-consistent aug-cc-pVXZ (X = T, Q, 5) basis sets and then we have extrapolated the final values to the complete basis set limit. We have also studied the collisional excitation of NH(X3Σ-)-Ar at the close-coupling level, employing our new PES. We calculated collisional excitation cross sections of the fine-structure levels of NH by Ar for energies up to 3000 cm-1. After thermal average of the cross sections, we have then obtained the rate coefficients for temperatures up to 350 K. The propensity rules between the fine-structure levels are in good agreement with those of similar collisional systems, even though they are not as strong and pronounced as for lighter systems, such as NH-He. The final theoretical values are also compared with the few available experimental data.
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Affiliation(s)
- D Prudenzano
- Center for Astrochemical Studies, Max-Planck-Institut für Extraterrestrische Physik, Gießenbachstraße 1, 85748 Garching, Germany
| | - F Lique
- LOMC-UMR 6294, CNRS-Université du Havre, 25 Rue Philippe Lebon, BP 1123, 76063 Le Havre, France
| | - R Ramachandran
- LOMC-UMR 6294, CNRS-Université du Havre, 25 Rue Philippe Lebon, BP 1123, 76063 Le Havre, France
| | - L Bizzocchi
- Center for Astrochemical Studies, Max-Planck-Institut für Extraterrestrische Physik, Gießenbachstraße 1, 85748 Garching, Germany
| | - P Caselli
- Center for Astrochemical Studies, Max-Planck-Institut für Extraterrestrische Physik, Gießenbachstraße 1, 85748 Garching, Germany
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Agrawal P, Nada R, Ramachandran R, Rayat CS, Kumar A, Kohli HS. Loss of Subpodocytic Space Predicts Poor Response to Tacrolimus in Steroid-Resistant Calcineurin Inhibitor-Naïve Adult-Onset Primary Focal Segmental Glomerulosclerosis. Indian J Nephrol 2019; 29:90-94. [PMID: 30983748 PMCID: PMC6440328 DOI: 10.4103/ijn.ijn_422_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Focal segmental glomerulosclerosis (FSGS) is the most common cause of adult-onset nephrotic syndrome, but its pathophysiology is poorly understood. The question as to why only a subset of patients responds to treatment in unanswered. In the past few years, change of podocytic phenotype from stationary type in health to migratory type in disease has been described, of which loss of subpodocytic space is a surrogate marker. Diagnostic biopsies of adult-onset steroid-resistant calcineurin inhibitor-naïve primary FSGS cases, which were subsequently treated with tacrolimus were included in this retrospective study conducted from 2011 to 2013. The ultrastructure of all cases was studied in detail, especially in context to the presence or absence of subpodocytic space. In the present study, we have compared presence or absence of subpodocytic space in tacrolimus-responsive versus tacrolimus-resistant cases to identify potential electron microscopic features predictive of response to treatment, of which loss of subpodocytic space indicating migratory phenotype is the most important and consistent feature. The present series included 7 tacrolimus responsive cases (includes two cases with partial response) and seven tacrolimus-resistant cases. The tacrolimus-resistant patients were of older age, had a longer duration of illness, and a lower eGFR as compared to tacrolimus responsive cases. The subpodocytic space was preserved in patients on tacrolimus with complete remission and lost in patients with partial response and tacrolimus-resistant cases.
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Affiliation(s)
- P Agrawal
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - R Nada
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - R Ramachandran
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - C S Rayat
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - A Kumar
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - H S Kohli
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Singh N, Pattanashetti N, Joshi K, Kohli HS, Gupta KL, Ramachandran R. Missed Monoclonal Disease Manifesting in Early Post-renal Transplant Period. Indian J Nephrol 2019; 29:65-69. [PMID: 30814798 PMCID: PMC6375021 DOI: 10.4103/ijn.ijn_384_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
A 63-year-old diabetic gentleman with microvascular complications presented with advanced azotemia and anemia. He was stabilized with blood transfusion and hemodialysis. With the probable diagnosis of diabetic nephropathy-related end-stage renal disease, he underwent kidney transplantation. He had delayed graft function. Graft biopsy done on the 2nd postoperative day showed acute tubular necrosis. Graft biopsy repeated after 2 weeks for persistent graft dysfunction showed myeloma cast nephropathy (MCN) and light chain proximal tubulopathy. Work-up for multiple myeloma was positive. He was started on plasmapheresis and chemotherapy. However, he suffered sudden cardiac death during dialysis after 1 week. The presence of MCN in the early graft biopsy implies that it must have been the cause for his native kidney failure. Thus, renal failure in a diabetic should not always be presumed to be due to diabetic nephropathy, and kidney biopsy should be done in diabetics with atypical features.
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Affiliation(s)
- N Singh
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - N Pattanashetti
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - K Joshi
- Department of Pathology, Medicos Centre, Chandigarh, India
| | - H S Kohli
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - K L Gupta
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - R Ramachandran
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Ramachandran R. Highly Enhanced Electrochemical Performance of Novel based Electrode Materials for Supercapacitor Applications – An Overview. INT J ELECTROCHEM SC 2019. [DOI: 10.20964/2019.02.75] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Murhekar M, Kanagasabai K, Shete V, Joshua V, Ravi M, Kirubakaran BK, Ramachandran R, Sabarinathan R, Gupta N. Epidemiology of chikungunya based on laboratory surveillance data—India, 2016–2018. Trans R Soc Trop Med Hyg 2019; 113:259-262. [DOI: 10.1093/trstmh/try141] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/14/2018] [Accepted: 12/14/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Manoj Murhekar
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - K Kanagasabai
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - Vishal Shete
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - Vasna Joshua
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - M Ravi
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - B K Kirubakaran
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - R Ramachandran
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
| | - R Sabarinathan
- Indian Council of Medical Research–National Institute of Epidemiology, R127, Tamil Nadu Housing Board, Ayapakkam, Chennai, Tamil Nadu, India
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48
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Sankarganesh D, Ramachandran R, Suriyakalaa U, Ramesh Saravanakumar V, Archunan G, Akbarsha MA, Achiraman S. Assessment of urinary volatile compounds and proteins in the female goat Capra hircus: A pilot study to reveal potential indicators of oestrus. Reprod Domest Anim 2019; 54:646-651. [PMID: 30659685 DOI: 10.1111/rda.13407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/29/2018] [Indexed: 11/29/2022]
Abstract
Urine samples of female goats in pro-oestrus, oestrus and post-oestrus phases were analysed for finding oestrus-specific volatile compounds using gas chromatograph-mass spectrometry (GC-MS), and proteins using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF MS). Fourteen urinary volatile were identified covering all three phases among which four compounds, 1-Tetradecanol, n-Pentadecanol, 3-Methylene tridecane and 2-Ethyl-1-dodecene, were unique to oestrus. Also, oestrus urine contained a 25 kDa protein, which was totally absent in pro-oestrus urine, and less-expressed in post-oestrus urine. This protein revealed to be complement C3 fragment. This pilot study, for the first time, reveals the difference in urinary volatile compounds and proteins in the female goat during the different phases of oestrous cycle. The four unique volatile compounds and a 25 kDa protein that appeared as oestrus-specific in this study warrant further investigation to consider them as urinary biomarkers of oestrus in goats.
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Affiliation(s)
- D Sankarganesh
- Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli, India.,Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, India
| | - R Ramachandran
- Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli, India.,Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - U Suriyakalaa
- Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli, India.,Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - V Ramesh Saravanakumar
- Department of Livestock Production and Management, Veterinary College and Research Institute, Namakkal, India
| | - G Archunan
- Pheromone Technology Laboratory, Department of Animal Science, Bharathidasan University, Tiruchirappalli, India
| | - M A Akbarsha
- National College (Autonomous), Tiruchirappalli, India
| | - S Achiraman
- Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli, India
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49
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Ramachandran R, Chen TW, Chen SM, Baskar T, Kannan R, Elumalai P, Raja P, Jeyapragasam T, Dinakaran K, Gnana kumar GP. A review of the advanced developments of electrochemical sensors for the detection of toxic and bioactive molecules. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00602h] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The recent developments made regarding the novel, cost-effective, and environmentally friendly nanocatalysts for the electrochemical sensing of biomolecules, pesticides, nitro compounds and heavy metal ions are discussed in this review article.
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Affiliation(s)
| | - Tse-Wei Chen
- Electroanalysis and Bioelectrochemistry Lab
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Republic of China
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Republic of China
| | - Thangaraj Baskar
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang – 212013
- P.R. China
| | - Ramanjam Kannan
- Department of Chemistry
- Sri Kumaragurupara Swamigal Arts College
- Thoothukudi
- India
| | - Perumal Elumalai
- Centre for Green Energy Technology
- Madanjeet School of Green Energy Technologies
- Pondicherry University
- Puducherry – 605 014
- India
| | - Paulsamy Raja
- Department of Chemistry
- Vivekananda College of Arts and Science
- Kanyakumari – 629 004
- India
| | | | | | - George peter Gnana kumar
- Department of Physical Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
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50
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Pattanashetti N, Gupta S, Rana S, Dahiya D, Das A, Kumar V, Rathi M, Kohli HS, Gupta KL, Ramachandran R. Intestinal Tuberculosis: A Rare Case of Massive Gastrointestinal Bleed in a Post-Renal Transplant Recipient. Indian J Nephrol 2019; 29:132-134. [PMID: 30983756 PMCID: PMC6440334 DOI: 10.4103/ijn.ijn_360_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Massive rectal bleeding is an uncommon presentation of ileal tuberculosis (TB). We report an uncommon cause of anemia in a post-renal transplant patient due to massive lower gastrointestinal (LGI) bleed. The index case had a normal upper and LGI endoscopy, but the 99technetium labeled red blood cell scan showed active bleeding from terminal ileum and caecum. Microscopic examination of the resected specimen revealed tubercular granuloma with acid-fast bacilli. Intestinal TB should be a differential diagnosis for massive LGI bleed in immunosuppressed patients in developing country.
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Affiliation(s)
| | - S Gupta
- Department of Internal Medicine, PGIMER, Chandigarh, India
| | - S Rana
- Department of Gastroenterology, PGIMER, Chandigarh, India
| | - D Dahiya
- Department of General Surgery, PGIMER, Chandigarh, India
| | - A Das
- Department of Histopathology, PGIMER, Chandigarh, India
| | - V Kumar
- Department of Nephrology, PGIMER, Chandigarh, India
| | - M Rathi
- Department of Nephrology, PGIMER, Chandigarh, India
| | - H S Kohli
- Department of Nephrology, PGIMER, Chandigarh, India
| | - K L Gupta
- Department of Nephrology, PGIMER, Chandigarh, India
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