1
|
Zulhendri F, Lesmana R, Tandean S, Christoper A, Chandrasekaran K, Irsyam I, Suwantika AA, Abdulah R, Wathoni N. Recent Update on the Anti-Inflammatory Activities of Propolis. Molecules 2022; 27:molecules27238473. [PMID: 36500579 PMCID: PMC9740431 DOI: 10.3390/molecules27238473] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 12/09/2022]
Abstract
In recent years, research has demonstrated the efficacy propolis as a potential raw material for pharmaceuticals and nutraceuticals. There is limited report detailing the mechanisms of action of propolis and its bioactive compounds in relation to their anti-inflammatory properties. Thus, the aim of the present review is to examine the latest experimental evidence (2017-2022) regarding the anti-inflammatory properties of propolis. A systematic scoping review methodology was implemented. After applying the exclusion criteria, a total of 166 research publications were identified and retrieved from Scopus, Web of Science, and Pubmed. Several key themes related to the anti-inflammatory properties of propolis were subsequently identified, namely in relation to cancers, oral health, metabolic syndrome, organ toxicity and inflammation, immune system, wound healing, and pathogenic infections. Based on the latest experimental evidence, propolis is demonstrated to possess various mechanisms of action in modulating inflammation towards the regulatory balance and anti-inflammatory environment. In general, we summarize that propolis acts as an anti-inflammatory substance by inhibiting and downregulating TLR4, MyD88, IRAK4, TRIF, NLRP inflammasomes, NF-κB, and their associated pro-inflammatory cytokines such as IL-1β, IL-6, IFN-γ, and TNF-α. Propolis also reduces the migration of immune cells such as macrophages and neutrophils, possibly by downregulating the chemokines CXCL9 and CXCL10.
Collapse
Affiliation(s)
- Felix Zulhendri
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Kebun Efi, Kabanjahe 22171, Indonesia
| | - Ronny Lesmana
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Bandung 45363, Indonesia
- Biological Activity Division, Central Laboratory, Universitas Padjadjaran, Bandung 45363, Indonesia
- Correspondence: (R.L.); (S.T.)
| | - Steven Tandean
- Department of Neurosurgery, Faculty of Medicine, Universitas Sumatera Utara, Medan 20222, Indonesia
- Correspondence: (R.L.); (S.T.)
| | - Andreas Christoper
- Postgraduate Program of Medical Science, Faculty of Medicine, Universitas Padjadjaran, Bandung 45363, Indonesia
| | | | - Ilham Irsyam
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universitas Sumatera Utara, Medan 20222, Indonesia
| | - Auliya A. Suwantika
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
| | - Rizky Abdulah
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Bandung 45363, Indonesia
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Research Center of Biopolymers for Drug and Cosmetic Delivery, Bandung 45363, Indonesia
| |
Collapse
|
2
|
Williams CJ, Hodkinson S, Chandrasekaran K, Koc T, Gibb I, Dando C, Bowen C, Oakley J. A retrospective audit of the timescales involved in the diagnosis and management of suspected Achilles tendon ruptures at a single National Health Service trust: A quality service improvement and redesign project. Ultrasound 2022; 30:117-125. [PMID: 35509302 PMCID: PMC9058383 DOI: 10.1177/1742271x211023800] [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] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/14/2021] [Indexed: 11/16/2022]
Abstract
Introduction The Achilles tendon is the most frequently ruptured tendon. Prompt diagnosis of this injury ensures optimal management decisions are instituted early ensuring the best outcome and patient experience, at minimal cost to the United Kingdom National Health Service. Despite this, regional and national variations to diagnosis and management exist, with anecdotal evidence of inefficiencies in the local patient pathway. To explore this further, a retrospective departmental audit of timescales from presentation to ultrasound diagnosis and definitive treatment decision was undertaken. Methods All suspected Achilles tendon ruptures in 2018 were identified through electronic and written patient records, and information on timescales involved in the diagnosis and management of each compiled. Descriptive statistics were used to map each step of the pathway and timescales involved, with performance assessed against local departmental standards and the Swansea Morriston Achilles Rupture Treatment (SMART) protocol. Results In total, 119 patients were identified, of which 113 received an ultrasound examination. Local departmental standards were met in the majority of cases, with 78% (n = 88) diagnosed by ultrasound within one week of the request and 83% (n = 91) given a treatment decision within two weeks of presentation. However, this was suboptimal when compared with timeframes utilised for developing the SMART protocol, with only 7% (n = 8) scanned within 48 hours of presentation. Conclusions Key areas of the patient pathway were identified for quality service improvement and redesign, with multidisciplinary discussion resulting in the development of a revised patient pathway which expedites diagnosis and treatment for these injuries.
Collapse
Affiliation(s)
- C J Williams
- Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - S Hodkinson
- Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | | | - T Koc
- Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - I Gibb
- Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - C Dando
- School of Health Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
| | - C Bowen
- School of Health Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
| | - J Oakley
- School of Health and Care Professions, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK
| |
Collapse
|
3
|
Vivek J, Maridurai T, Lewise KAS, Pandiyarajan R, Chandrasekaran K. Recast Layer Thickness and Residual Stress Analysis for EDD AA8011/h-BN/B4C Composites Using Cryogenically Treated SiC and CFRP Powder-Added Kerosene. Arab J Sci Eng 2022. [DOI: 10.1007/s13369-022-06636-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
4
|
Zulhendri F, Perera CO, Tandean S, Abdulah R, Herman H, Christoper A, Chandrasekaran K, Putra A, Lesmana R. The Potential Use of Propolis as a Primary or an Adjunctive Therapy in Respiratory Tract-Related Diseases and Disorders: A Systematic Scoping Review. Biomed Pharmacother 2022; 146:112595. [PMID: 35062065 DOI: 10.1016/j.biopha.2021.112595] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/09/2021] [Accepted: 12/23/2021] [Indexed: 11/29/2022] Open
Abstract
Propolis is a resinous beehive product that is collected by the bees from plant resin and exudates, to protect and maintain hive homeostasis. Propolis has been used by humans therapeutically to treat many ailments including respiratory tract-related diseases and disorders. The aim of the present systematic scoping review is to evaluate the experimental evidence to support the use of propolis as a primary or an adjunctive therapy in respiratory tract-related diseases and disorders. After applying the exclusion criteria, 158 research publications were retrieved and identified from Scopus, Web of Science, Pubmed, and Google Scholar. The key themes of the included studies were pathogenic infection-related diseases and disorders, inflammation-related disorders, lung cancers, and adverse effects. Furthermore, the potential molecular and biochemical mechanisms of action of propolis in alleviating respiratory tract-related diseases and disorders are discussed. In conclusion, the therapeutic benefits of propolis have been demonstrated by various in vitro studies, in silico studies, animal models, and human clinical trials. Based on the weight and robustness of the available experimental and clinical evidence, propolis is effective, either as a primary or an adjunctive therapy, in treating respiratory tract-related diseases.
Collapse
Affiliation(s)
- Felix Zulhendri
- Kebun Efi, Kabanjahe 22171, North Sumatra, Indonesia; Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Indonesia; Research Fellow, Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Indonesia.
| | - Conrad O Perera
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland CBD, Auckland 1010, New Zealand.
| | - Steven Tandean
- Department of Neurosurgery, Faculty of Medicine, Universitas Sumatera Utara, Medan 20222, Sumatera Utara, Indonesia.
| | - Rizky Abdulah
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Indonesia; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Indonesia.
| | - Herry Herman
- Department of Orthopaedics, Faculty of Medicine, Universitas Padjadjaran, Indonesia.
| | - Andreas Christoper
- Postgraduate Program of Medical Science, Faculty of Medicine, Universitas Padjadjaran, Indonesia.
| | | | - Arfiza Putra
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Universitas Sumatera Utara Medan 20222, Sumatera Utara, Indonesia.
| | - Ronny Lesmana
- Center of Excellence in Higher Education for Pharmaceutical Care Innovation, Universitas Padjadjaran, Indonesia; Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Indonesia; Biological Activity Division, Central Laboratory, Universitas Padjadjaran, Indonesia.
| |
Collapse
|
5
|
Hermansyah D, Zulhendri F, Perera CO, Firsty NN, Chandrasekaran K, Abdulah R, Herman H, Lesmana R. The Potential Use of Propolis as an Adjunctive Therapy in Breast Cancers. Integr Cancer Ther 2022; 21:15347354221096868. [PMID: 35593403 PMCID: PMC9127854 DOI: 10.1177/15347354221096868] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Propolis is a resinous beehive product that has a wide range of biological activities, namely antimicrobial, antioxidant, and anti-inflammatory properties. Propolis is collected by the bees from plant resin and exudates to protect hives and maintain hive homeostasis. The aim of the present systematic scoping review is to explore the potential and suitability of propolis as an adjunctive treatment in breast cancers, based on the latest available experimental evidence (2012-2021). After applying the exclusion criteria, a total of 83 research publications were identified and retrieved from Scopus, Web of Science, and Pubmed. Several relevant key themes identified from the included studies were cytotoxicity, synergistic/combination treatment, improvement in bioavailability, human clinical trials, and others. A majority of the studies identified were still in the in vitro and in vivo stages. Nonetheless, we managed to identify 4 human clinical trials that demonstrated the successful use of propolis in alleviating side effects of chemotherapy and radiotherapy while increasing the quality of life of breast cancer patients, with minimal adverse effects. In conclusion, propolis, as an adjunctive treatment, may have therapeutic benefits in alleviating symptoms related to breast cancers. However, further clinical trials, preferably with higher number of participants/subjects/patients, are urgently needed.
Collapse
Affiliation(s)
| | - Felix Zulhendri
- Universitas Padjadjaran, Bandung, Indonesia.,Kebun Efi, Kabanjahe, Indonesia
| | | | | | | | | | | | | |
Collapse
|
6
|
Sahu P, Raghavan S, Chandrasekaran K. Ensemble deep neural network based quality of service prediction for cloud service recommendation. Neurocomputing 2021. [DOI: 10.1016/j.neucom.2021.08.110] [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: 11/28/2022]
|
7
|
Zulhendri F, Chandrasekaran K, Kowacz M, Ravalia M, Kripal K, Fearnley J, Perera CO. Antiviral, Antibacterial, Antifungal, and Antiparasitic Properties of Propolis: A Review. Foods 2021; 10:1360. [PMID: 34208334 PMCID: PMC8231288 DOI: 10.3390/foods10061360] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/18/2022] Open
Abstract
Propolis is a complex phytocompound made from resinous and balsamic material harvested by bees from flowers, branches, pollen, and tree exudates. Humans have used propolis therapeutically for centuries. The aim of this article is to provide comprehensive review of the antiviral, antibacterial, antifungal, and antiparasitic properties of propolis. The mechanisms of action of propolis are discussed. There are two distinct impacts with regards to antimicrobial and anti-parasitic properties of propolis, on the pathogens and on the host. With regards to the pathogens, propolis acts by disrupting the ability of the pathogens to invade the host cells by forming a physical barrier and inhibiting enzymes and proteins needed for invasion into the host cells. Propolis also inhibits the replication process of the pathogens. Moreover, propolis inhibits the metabolic processes of the pathogens by disrupting cellular organelles and components responsible for energy production. With regard to the host, propolis functions as an immunomodulator. It upregulates the innate immunity and modulates the inflammatory signaling pathways. Propolis also helps maintain the host's cellular antioxidant status. More importantly, a small number of human clinical trials have demonstrated the efficacy and the safety of propolis as an adjuvant therapy for pathogenic infections.
Collapse
Affiliation(s)
| | | | - Magdalena Kowacz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10 St., 10-748 Olsztyn, Poland; or
| | - Munir Ravalia
- The Royal London Hospital, Whitechapel Rd, Whitechapel, London E1 1FR, UK;
| | - Krishna Kripal
- Rajarajeswari Dental College & Hospital, No.14, Ramohalli Cross, Mysore Road, Kumbalgodu, Bengaluru 560074, Karnataka, India;
| | - James Fearnley
- Apiceutical Research Centre, Unit 3b Enterprise Way, Whitby, North Yorkshire YO18 7NA, UK;
| | - Conrad O. Perera
- Food Science Program, School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland CBD, Auckland 1010, New Zealand
| |
Collapse
|
8
|
|
9
|
D Chavan S, Chandrasekaran K, Kripal K, Anuroopa P. Immediate effects of diode laser (970±15 nm) on microbial load in patients with chronic periodontitis: A split-mouth study. Indian J Dent Res 2021; 32:453-458. [DOI: 10.4103/ijdr.ijdr_122_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
10
|
Raghavan S, Rai SS, Rohit MP, Chandrasekaran K. GPUPeP: Parallel Enzymatic Numerical P System simulator with a Python-based interface. Biosystems 2020; 196:104186. [PMID: 32535178 DOI: 10.1016/j.biosystems.2020.104186] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022]
Abstract
Membrane computing is a computational paradigm inspired by the structure and behavior of a living cell. P Systems are the computing devices that are used to realize membrane computing models. Numerous theoretical studies on many variants of P Systems have shown them to be computationally universal. There is a wide range of applications of P Systems from modeling of biological processes to image processing. Among many variants of P Systems, one of the most important is Enzymatic Numerical P System (ENPS). ENPS is a class of P System in which membranes operate on numerical values. To realize the power of ENPS there are a few simulators developed. Each and every simulator has some advantages as well as some disadvantages. Here, a GPU based simulator using Python as a user interaction language is developed. This tool is a completely parallel variant, compatible with a Python based sequential simulator (PeP) which was the first Python based work for ENPS. The developed simulator uses CUDA to interact with GPU and gives the desired speed up, while processing the membranes. There are two important case studies which show the performance of the developed tool to be far better than the other serial simulators.
Collapse
Affiliation(s)
- S Raghavan
- National Institute of Technology Karnataka, Surathkal, India.
| | - Shanthanu S Rai
- National Institute of Technology Karnataka, Surathkal, India.
| | - M P Rohit
- National Institute of Technology Karnataka, Surathkal, India.
| | | |
Collapse
|
11
|
Raghavan S, Gangadhar Y, Pattar V, Chandrasekaran K. Multi-ENPS simulator support tool with automatic file inter-conversion and multi-membrane execution. Biosystems 2019; 189:104067. [PMID: 31712063 DOI: 10.1016/j.biosystems.2019.104067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/19/2019] [Accepted: 10/26/2019] [Indexed: 11/18/2022]
Abstract
P System or Membrane Computing is an unconventional and natural computing model inspired by the functioning of a living cell. This model has an inherently parallel structure. There are several variants of P System developed, each of which has a different application. One of the variants, Enzymatic Numerical P System (ENPS), has primarily been developed to be used with numerical values (as in economics) and thus has vast applications. For realizing ENPS there are several tools available, primarily based on Java and Python, each of which has a different input format. Currently, there is no tool which allows the user to execute ENPS using both the simulators on the same platform, the issue being inter-conversion between input formats, namely, XML and PeP (specific format designed for Python based ENPS). Another major issue with existing simulators is their inability to allow multiple membrane systems to be executed and there is no facility for interconnection between two membrane systems. A tool developed here solves both problems namely, file inter-conversion and multiple membrane support by transferring dependent variable values automatically according to users' choice. The tool is developed using Python 3.0 and has only a few dependencies. The tool is tested under different scenarios and the results confirm the correctness of the tool.
Collapse
Affiliation(s)
- S Raghavan
- National Institute of Technology Karnataka, Surathkal, India.
| | | | - Varun Pattar
- National Institute of Technology Karnataka, Surathkal, India.
| | | |
Collapse
|
12
|
Kripal K, Chandrasekaran K, Chandrasekaran S, Kumar VR, Chavan SKD, Dileep A. Treatment of dentinal hypersensitivity using propolis varnish: A scanning electron microscope study. Indian J Dent Res 2019; 30:249-253. [PMID: 31169158 DOI: 10.4103/ijdr.ijdr_400_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Dentin hypersensitivity (DH) affects all age groups in a population and is perceived as pain to any stimuli. From time immemorial, researchers have sought herbal or natural solutions to treat hypersensitivity. Propolis is one such natural, nontoxic resinous substance produced by honey bees, which is useful in various applications in dentistry and effective in treating dentinal hypersensitivity. Aim The aim of this in vitro study is to assess the effect of propolis varnish on occlusion of dentinal tubules thus aiding in the treatment of dentinal hypersensitivity. The objective is to evaluate the effectiveness of the proposed treatment using scanning electron microscope (SEM) imaging. Materials and Methods Twenty naturally extracted teeth were collected and stored until in vitro assessment. Discs obtained from each tooth were divided into two groups of 20 each - I (test) and II (control), with each tooth acting as its own control. Propolis varnish was applied only to the acid-etched surface of the exposed dentin of discs in the test group, whereas all the discs were subjected to SEM imaging. Results Statistical analysis showed a significant reduction in open tubules (P < 0.001) from 160 ± 6.97 before treatment to 61.20 ± 9.10 after propolis varnish application in the test group. Conclusion This study showed the promise of propolis varnish as a natural treatment modality for DH.
Collapse
Affiliation(s)
- Krishna Kripal
- Department of Periodontology, Rajarajeswari Dental College and Hospital, Bangalore, Karnataka, India
| | - Kavita Chandrasekaran
- Department of Periodontology, Rajarajeswari Dental College and Hospital, Bangalore, Karnataka, India
| | | | - Vinaya R Kumar
- Department of Periodontology, Rajarajeswari Dental College and Hospital, Bangalore, Karnataka, India
| | - Sunil Kumar D Chavan
- Department of Microbiology, Academy of Medical Sciences, Pariyaram, Kannur, Kerala, India
| | - Aiswarya Dileep
- Department of Periodontology, Rajarajeswari Dental College and Hospital, Bangalore, Karnataka, India
| |
Collapse
|
13
|
Banumalar K, Manikandan B, Arul Jeyaraj K, Chandrasekaran K. Optimal placement of phasor measurement units using clustered gravitational search algorithm. IFS 2018. [DOI: 10.3233/jifs-17800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- K. Banumalar
- Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, India
| | - B.V. Manikandan
- Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, India
| | - K. Arul Jeyaraj
- Department of Electrical and Electronics Engineering, PSNA College of Engineering and Technology, Dindigul, Tamilnadu, India
| | - K. Chandrasekaran
- Department of Electrical and Electronics Engineering, National Institute of Technology Puducherry, Karaikal, India
| |
Collapse
|
14
|
Martin JP, Kandasamy A, Chandrasekaran K. Exploring the support for high performance applications in the container runtime environment. Hum Cent Comput Inf Sci 2018. [DOI: 10.1186/s13673-017-0124-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractCloud computing is the driving power behind the current technological era. Virtualization is rightly referred to as the backbone of cloud computing. Impacts of virtualization employed in high performance computing (HPC) has been much reviewed by researchers. The overhead in the virtualization layer was one of the reasons which hindered its application in the HPC environment. Recent developments in virtualization, especially the OS container based virtualization provides a solution that employs a lightweight virtualization layer and promises lesser overhead. Containers are advantageous over virtual machines in terms of performance overhead which is a major concern in the case of both data intensive applications and compute intensive applications. Currently, several industries have adopted container technologies such as Docker. While Docker is widely used, it has certain pitfalls such as security issues. The recently introduced CoreOS Rkt container technology overcomes these shortcomings of Docker. There has not been much research on how the Rkt environment is suited for high performance applications. The differences in the stack of the Rkt containers suggest better support for high performance applications. High performance applications consist of CPU-intensive and data-intensive applications. The High Performance Linpack Library and the Graph500 are the commonly used computation intensive and data-intensive benchmark applications respectively. In this work, we explore the feasibility of this inter-operable Rkt container in high performance applications by running the HPL and Graph500 applications and compare its performance with the commonly used container technologies such as LXC and Docker containers.
Collapse
|
15
|
Kawaskar K, Balasubramaniyan T, Gopalakrishnan N, Kumar TD, Chandrasekaran K, Sakthirajan R, Dhanapriya J. Incidence and outcome of transplant renal artery stenosis: A single-center experience. Indian J Transplant 2018. [DOI: 10.4103/ijot.ijot_31_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
16
|
|
17
|
|
18
|
Chandrasekaran K, Thilak Kumar R. Structural, spectral, thermodynamical, NLO, HOMO, LUMO and NBO analysis of fluconazole. Spectrochim Acta A Mol Biomol Spectrosc 2015; 150:974-991. [PMID: 26123515 DOI: 10.1016/j.saa.2015.06.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 11/26/2014] [Accepted: 06/01/2015] [Indexed: 06/04/2023]
Abstract
Fluconazole is an efficient antifungal drug used in the treatment and prevention of superficial and systemic fungal infections. The molecular structure, fundamental vibrational wavenumber and intensity of the vibrational bands are interpreted, aided by density functional theory method. The results of the calculations were applied to simulated spectra of the title compound, which show excellent agreement with observed spectra. The vibrational analysis of the title compound has been carried out using FT-IR and FT-Raman spectra. Stability of the molecule arising from hyperconjugative interactions and charge delocalization has been analyzed using natural bond orbital analysis. The present investigation is extended to calculate the HOMO-LUMO energy gap, polarizability, Mulliken charges and thermodynamical properties of fluconazole at different temperature. The calculated HOMO-LUMO energy gap shows that the charge transfer occurs within the molecule. The frontier orbital and molecular electrostatic potential surface studies have been employed to understand the active sites of fluconazole. Nonlinear optical properties related to polarizability and hyperpolarizability are also discussed. The absorption characteristics and solvent analysis of fluconazole have been made using UV-Vis spectroscopic method.
Collapse
Affiliation(s)
- K Chandrasekaran
- Department of Physics, Periyar University, Salem 636011, Tamil Nadu, India.
| | - R Thilak Kumar
- Department of Physics, Periyar Arts College, Cuddalore 607001, Tamil Nadu, India
| |
Collapse
|
19
|
Arul jeyaraj K, Rajasekaran V, Nandha Kumar S, Chandrasekaran K. A multi-objective placement of phasor measurement units using fuzzified artificial bee colony algorithm, considering system observability and voltage stability. J EXP THEOR ARTIF IN 2015. [DOI: 10.1080/0952813x.2015.1020520] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
20
|
Chandrasekaran K, Ranjit M, Arunachalam J. Determination of inorganic selenium species [Se(IV) and Se(VI)] in tube well water samples in Punjab, India. Chemical Speciation & Bioavailability 2015. [DOI: 10.3184/095422909x416405] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
21
|
|
22
|
Chandrasekaran K, Santurkar S, Arora A. Stormgen - A Domain specific language to create ad-hoc Storm Topologies. ANNALS OF COMPUTER SCIENCE AND INFORMATION SYSTEMS 2014. [DOI: 10.15439/2014f278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
23
|
|
24
|
Karthikeyan A, Chandrasekaran K, Geetha M, Kalaiselvi R. Growth response of Casuarina equisetifolia Forst. rooted stem cuttings to Frankia in nursery and field conditions. J Biosci 2013; 38:741-7. [PMID: 24287654 DOI: 10.1007/s12038-013-9362-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Casuarina equisetifolia Forst. is a tree crop that provides fuel wood, land reclamation, dune stabilization, and scaffolding for construction, shelter belts, and pulp and paper production. C. equisetifolia fixes atmospheric nitrogen through a symbiotic relationship with Frankia, a soil bacterium of the actinobacteria group. The roots of C. equisetifolia produce root nodules where the bacteria fix atmospheric nitrogen, which is an essential nutrient for all plant metabolic activities. However, rooted stem cuttings of elite clones of C. equisetifolia by vegetative propagation is being planted by the farmers of Pondicherry as costeffective method. As the vegetative propagation method uses inert material (vermiculite) for rooting there is no chance for Frankia association. Therefore after planting of these stocks the farmers are applying 150 kg of di-ammonium phosphate (DAP)/acre/year. To overcome this fertilizer usage, the Frankia-inoculated rooted stem cuttings were propagated under nursery conditions and transplanted in the nutrient-deficient soils of Karaikal, Pondicherry (India), in this study. Under nursery experiments the growth and biomass of C. equisetifolia rooted stem cuttings inoculated with Frankia showed 3 times higher growth and biomass than uninoculated control. These stocks were transplanted and monitored for their growth and survival for 1 year in the nutrient-deficient farm land. The results showed that the rooted stem cuttings of C. equisetifolia significantly improved growth in height (8.8 m), stem girth (9.6 cm) and tissue nitrogen content (3.3 mg g-1) than uninoculated controls. The soil nutrient status was also improved due to inoculation of Frankia.
Collapse
Affiliation(s)
- A Karthikeyan
- Institute of Forest Genetics and Tree Breeding, Coimbatore 641 002, India,
| | | | | | | |
Collapse
|
25
|
Chandrasekaran K, Whitten DG. Solar Photoelectrochemical Cells Based on Photoinduced Hydrogen Atom Abstraction Reactions in Solution. Isr J Chem 2013. [DOI: 10.1002/ijch.198200028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
26
|
|
27
|
Muhamat Nor FE, Chandrasekaran K, Marks JC. A retrospective audit of 200 cases of CNS tumours and their surgical management in a tertiary care centre. Ir J Med Sci 2013; 182:697-701. [PMID: 23645548 DOI: 10.1007/s11845-013-0959-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 04/22/2013] [Indexed: 10/26/2022]
Abstract
AIMS To study the nature of the tumours managed in the Irish population. METHODS This audit research was completed via a retrospective medical review on 200 patients with CNS tumours managed in a tertiary care centre between 2008 and 2009. RESULTS The mean age was 53 years. The male:female ratio was 2:1. The majority were glioblastomas and astrocytomas. Grade IV tumours were predominant (65.5 %). Headaches (37 %), motor weakness (32 %) and seizures (25.5 %) were the highest presentations. The commonest sites affected were the left parietal and left temporal lobes. There were 17.5 % operative morbidities with motor weakness (22.9 %), seizure (14.3 %) and thrombo-embolism (14.3 %) dominating and significant association to surgical radicality (p = 0.041). 3.5 % operative mortalities were reported. 52.5 and 62.5 % of patients received adjuvant chemotherapy and radiotherapy, respectively. CONCLUSIONS Patients with CNS tumours typically had multiple presentations. More extensive surgical resection was associated with higher postoperative morbidities (p = 0.041). The 30-day postoperative morbidity (17.5 %) and mortality (3.5 %) were concordant with the currently available literature.
Collapse
Affiliation(s)
- F E Muhamat Nor
- Department of Neurosurgery, Cork University Hospital, Wilton, Cork, Republic of Ireland,
| | | | | |
Collapse
|
28
|
Dunlay S, Park S, Chandrasekaran K, Choi JO, Pereira N, Joyce L, Daly R, Stulak J, Kushwaha S. Changes in Left Ventricular Ejection Fraction Following Implantation of Left Ventricular Assist Device as Destination Therapy. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.244] [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
|
29
|
Malhotra S, Vijayakumar D, Mudhukrishnan M, Chandrasekaran K. Some Studies on Fiber Reinforced Thermoplastics Laminates Fabricated by Film Stacking Method. ACTA ACUST UNITED AC 2013. [DOI: 10.11127/ijammc.2013.02.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
30
|
Massimo L, Morgan B, Chandrasekaran K, Boller A, Camp E, Rascovsky K, Grossman M. Initiation Difficulty and Apathy in Behavioral Variant Frontotemporal Degeneration (PD7.001). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.pd7.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
31
|
Columbus CC, Chandrasekaran K, Simon SP. Nodal ant colony optimization for solving profit based unit commitment problem for GENCOs. Appl Soft Comput 2012. [DOI: 10.1016/j.asoc.2011.08.057] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
32
|
Wang M, Yan G, Yue W, Siu C, Tse H, Perperidis A, Cusack D, White A, Macgillivray T, Mcdicken W, Anderson T, Ryabov V, Shurupov V, Suslova T, Markov V, Elmstedt N, Ferm Widlund K, Lind B, Brodin LA, Westgren M, Mantovani F, Barbieri A, Bursi F, Valenti C, Quaglia M, Modena M, Peluso D, Muraru D, Dal Bianco L, Beraldo M, Solda' E, Tuveri M, Cucchini U, Al Mamary A, Badano L, Iliceto S, Goncalves A, Almeria C, Marcos-Alberca P, Feltes G, Hernandez-Antolin R, Rodriguez H, Maroto L, Silva Cardoso J, Macaya C, Zamorano J, Squarciotta S, Innocenti F, Guzzo A, Bianchi S, Lazzeretti D, De Villa E, Vicidomini S, Del Taglia B, Donnini C, Pini R, Mennie C, Salmasi AM, Kutyifa V, Nagy V, Edes E, Apor A, Merkely B, Nyrnes S, Lovstakken L, Torp H, Haugen B, Said K, Shehata A, Ashour Z, El-Tobgy S, Cameli M, Bigio E, Lisi M, Righini F, Franchi F, Scolletta S, Mondillo S, Gayat E, Weinert L, Yodwut C, Mor-Avi V, Lang R, Hrynchyshyn N, Kachenoura N, Diebold B, Khedim R, Senesi M, Redheuil A, Mousseaux E, Perdrix L, Yurdakul S, Erdemir V, Tayyareci Y, Memic K, Yildirimturk O, Aytekin V, Gurel M, Aytekin S, Gargani L, Fernandez Cimadevilla C, La Falce S, Landi P, Picano E, Sicari R, Smedsrud MK, Gravning J, Eek C, Morkrid L, Skulstad H, Aaberge L, Bendz B, Kjekshus J, Edvardsen T, Bajraktari G, Hyseni V, Morina B, Batalli A, Tafarshiku R, Olloni R, Henein M, Mjolstad O, Snare S, Folkvord L, Helland F, Torp H, Haraldseth O, Grimsmo A, Haugen B, Berry M, Zaghden O, Nahum J, Macron L, Lairez O, Damy T, Bensaid A, Dubois Rande J, Gueret P, Lim P, Nciri N, Issaoui Z, Tlili C, Wanes I, Foudhil H, Dachraoui F, Grapsa J, Dawson D, Nihoyannopoulos P, Gianturco L, Turiel M, Atzeni F, Sarzi-Puttini P, Stella D, Donato L, Tomasoni L, Jung P, Mueller M, Huber T, Sevilmis G, Kroetz F, Sohn H, Panoulas V, Bratsas A, Dawson D, Nihoyannopoulos P, Raso R, Tartarisco G, Gargani L, La Falce S, Pioggia G, Picano E, Gargiulo P, Petretta M, Cuocolo A, Prastaro M, D'amore C, Vassallo E, Savarese G, Marciano C, Paolillo S, Perrone Filardi P, Aggeli C, Felekos I, Roussakis G, Poulidakis E, Pietri P, Toutouzas K, Stefanadis C, Kaladaridis A, Skaltsiotis I, Kottis G, Bramos D, Takos D, Matthaios I, Agrios I, Papadopoulou E, Moulopoulos S, Toumanidis S, Carrilho-Ferreira P, Cortez-Dias N, Jorge C, Silva D, Silva Marques J, Placido R, Santos L, Ribeiro S, Fiuza M, Pinto F, Stoickov V, Ilic S, Deljanin Ilic M, Kim W, Woo J, Bae J, Kim K, Descalzo M, Rodriguez J, Moral S, Otaegui I, Mahia P, Garcia Del Blanco L, Gonzalez Alujas T, Figueras J, Evangelista A, Garcia-Dorado D, Takeuchi M, Kaku K, Otani K, Iwataki M, Kuwaki H, Haruki N, Yoshitani H, Otsuji Y, Kukucka M, Pasic M, Unbehaun A, Dreysse S, Mladenow A, Kuppe H, Hetzer R, Rajamannan N, Yurdakul S, Tayyareci Y, Tanrikulu A, Yildirimturk O, Aytekin V, Aytekin S, Kristiansson L, Gustafsson S, Lindmark K, Henein MY, Evdoridis C, Stougiannos P, Thomopoulos M, Fosteris M, Spanos P, Sionis G, Giatsios D, Paschalis A, Sakellaris C, Trikas A, Yong ZY, Boerlage-Van Dijk K, Koch K, Vis M, Bouma B, Piek J, Baan J, Abid L, Frikha Z, Makni K, Maazoun N, Abid D, Hentati M, Kammoun S, Barbier P, Staron A, Cefalu' C, Berna G, Gripari P, Andreini D, Pontone G, Pepi M, Ring L, Rana B, Ho S, Wells F, Yurdakul S, Tayyareci Y, Yildirimturk O, Dogan A, Aytekin V, Aytekin S, Karaca O, Guler G, Guler E, Gunes H, Alizade E, Agus H, Gol G, Esen O, Esen A, Turkmen M, Agricola E, Ingallina G, Ancona M, Maggio S, Slavich M, Tufaro V, Oppizzi M, Margonato A, Orsborne C, Irwin B, Pearce K, Ray S, Garcia Alonso C, Vallejo N, Labata C, Lopez Ayerbe J, Teis A, Ferrer E, Nunez Aragon R, Gual F, Pedro Botet M, Bayes Genis A, Santos CM, Carvalho M, Andrade M, Dores H, Madeira S, Cardoso G, Ventosa A, Aguiar C, Ribeiras R, Mendes M, Petrovic M, Petrovic M, Milasinovic G, Vujisic-Tesic B, Nedeljkovic I, Zamaklar-Trifunovic D, Petrovic I, Draganic G, Banovic M, Boricic M, Villarraga H, Molini-Griggs Bs C, Silen-Rivera Bs P, Payne Mph Ms B, Koshino Md Phd Y, Hsiao Md J, Monivas Palomero V, Mingo Santos S, Mitroi C, Garcia Lunar I, Garcia Pavia P, Castro Urda V, Toquero J, Gonzalez Mirelis J, Cavero Gibanel M, Fernandez Lozano I, Oko-Sarnowska Z, Wachowiak-Baszynska H, Katarzynska-Szymanska A, Trojnarska O, Grajek S, Bellavia D, Pellikka P, Dispenzieri A, Oh JK, Polizzi V, Pitrolo F, Musumeci F, Miller F, Ancona R, Comenale Pinto S, Caso P, Severino S, Cavallaro C, Vecchione F, D'onofrio A, Calabro' R, Maceira Gonzalez AM, Ripoll C, Cosin-Sales J, Igual B, Salazar J, Belloch V, Cosin-Aguilar J, Pinamonti B, Iorio A, Bobbo M, Merlo M, Barbati G, Massa L, Faganello G, Di Lenarda A, Sinagra GF, Ishizu T, Seo Y, Enomoto M, Kameda Y, Ishibashi N, Inoue M, Aonuma K, Saleh A, Matsumori A, Negm H, Fouad H, Onsy A, Hamodraka E, Paraskevaidis I, Kallistratos M, Lezos V, Zamfir T, Manetos C, Mavropoulos D, Poulimenos L, Kremastinos D, Manolis A, Citro R, Rigo F, Ciampi Q, Patella M, Provenza G, Zito C, Tagliamonte E, Rotondi F, Silvestri F, Bossone E, Monivas Palomero V, Mingo Santos S, Beltran Correas P, Gutierrez Landaluce C, Mitroi C, Garcia Lunar I, Gonzalez Mirelis J, Cavero Gibanel M, Gomez Bueno M, Segovia Cubero J, Beladan C, Matei F, Popescu B, Calin A, Rosca M, Boanta A, Enache R, Savu O, Usurelu C, Ginghina C, Ciobanu AO, Dulgheru R, Magda S, Dragoi R, Florescu M, Vinereanu D, Silva Marques J, Robalo Martins S, Jorge C, Calisto C, Goncalves S, Ribeiro S, Barrigoto I, Carvalho De Sousa J, Almeida A, Nunes Diogo A, Sargento L, Satendra M, Sousa C, Lousada N, Palma Reis R, Schiano Lomoriello V, Esposito R, Santoro A, Raia R, Schiattarella P, Dores E, Galderisi M, Mansencal N, Caille V, Dupland A, Perrot S, Bouferrache K, Vieillard-Baron A, Jouffroy R, Moceri P, Liodakis E, Gatzoulis M, Li W, Dimopoulos K, Sadron M, Seguela PE, Arnaudis B, Dulac Y, Cognet T, Acar P, Shiina Y, Gatzoulis M, Uemura H, Li W, Kupczynska K, Kasprzak J, Michalski B, Lipiec P, Carvalho V, Almeida AMG, David C, Marques J, Silva D, Cortez-Dias N, Ferreira P, Amaro M, Costa P, Diogo A, Tritakis V, Ikonomidis I, Paraskevaidis I, Lekakis J, Tzortzis S, Kadoglou N, Papadakis I, Trivilou P, Koukoulis C, Anastasiou-Nana M, Bombardini T, Picano E, Gherardi S, Arpesella G, Maccherini M, Serra W, Magnani G, Del Bene R, Pasanisi E, Sicari R, Startari U, Panchetti L, Rossi A, Piacenti M, Morales M, Mansencal N, El Hajjaji I, El Mahmoud R, Digne F, Dubourg O, Gargani L, Agoston G, Moreo A, Pratali L, Moggi Pignone A, Pavellini A, Doveri M, Musca F, Varga A, Picano E, Pratali L, Faita F, Rimoldi S, Sartori C, Alleman Y, Salinas Salmon C, Villena M, Scherrer U, Picano E, Sicari R, Baptista R, Serra S, Castro G, Martins R, Salvador M, Monteiro P, Silva J, Szudi L, Temesvary A, Fekete B, Kassai I, Szekely L, Abdel Moneim SS, Martinez M, Mankad S, Bernier M, Dhoble A, Pellikka P, Chandrasekaran K, Oh J, Mulvagh S, Hong GR, Kim JY, Lee SC, Choi SH, Sohn IS, Seo HS, Choi JH, Cho KI, Yoon SJ, Lim SJ, Lipiec P, Wejner-Mik P, Kusmierek J, Plachcinska A, Szuminski R, Kasprzak J, Stoebe S, Tarr A, Trache T, Hagendorff A, Mor-Avi V, Yodwut C, Jenkins C, Kuhl H, Nesser H, Marwick T, Franke A, Niel J, Sugeng L, Lang R, Gustafsson S, Henein M, Soderberg S, Lindmark K, Lindqvist P, Necas J, Kovalova S, Saha SK, Kiotsekoglou A, Toole R, Govind S, Gopal A, Amzulescu MS, Florian A, Bogaert J, Janssens S, Voigt J, Parisi V, Losi M, Parrella L, Contaldi C, Chiacchio E, Caputi A, Scatteia A, Buonauro A, Betocchi S, Rimbas R, Dulgheru R, Mihaila S, Vinereanu D, Caputo M, Navarri R, Innelli P, Urselli R, Capati E, Ballo P, Furiozzi F, Favilli R, Mondillo S, Lindquist R, Miller A, Reece C, O'leary P, Cetta F, Eidem BW, Cikes M, Gasparovic H, Bijnens B, Velagic V, Kopjar T, Biocina B, Milicic D, Ta-Shma A, Nir A, Perles Z, Gavri S, Golender J, Rein A, Pinnacchio G, Barone L, Battipaglia I, Cosenza A, Marinaccio L, Coviello I, Scalone G, Sestito A, Lanza G, Crea F, Cakal S, Eroglu E, Ozkan B, Kulahcioglu S, Bulut M, Koyuncu A, Acar G, Alici G, Dundar C, Esen A, Labombarda F, Zangl E, Pellissier A, Bougle D, Maragnes P, Milliez P, Saloux E, Aggeli C, Lagoudakou S, Felekos I, Gialafos E, Poulidakis E, Tsokanis A, Roussakis G, Stefanadis C, Nagy A, Kovats T, Apor A, Vago H, Toth A, Sax B, Kovacs A, Merkely B, Elnoamany MF, Badran H, Abdelfattah I, Khalil T, Salama M, Butz T, Taubenberger C, Thangarajah F, Meissner A, Van Bracht M, Prull M, Yeni H, Plehn G, Trappe H, Rydman R, Bone D, Alam M, Caidahl K, Larsen F, Staron A, Gasior Z, Tabor Z, Sengupta P, Liu D, Niemann M, Hu K, Herrmann S, Stoerk S, Morbach C, Knop S, Voelker W, Ertl G, Weidemann F, Cawley P, Hamilton-Craig C, Mitsumori L, Maki J, Otto C, Astrom Aneq M, Nylander E, Ebbers T, Engvall J, Arvanitis P, Flachskampf F, Duvernoy O, De Torres Alba F, Valbuena Lopez S, Guzman Martinez G, Gomez De Diego J, Rey Blas J, Armada Romero E, Lopez De Sa E, Moreno Yanguela M, Lopez Sendon J, Aggeli C, Felekos I, Poulidakis E, Trikalinos N, Siasos G, Aggeli A, Roussakis G, Stefanadis C, Tomaszewski A, Kutarski A, Tomaszewski M, Ikonomidis I, Lekakis J, Tritakis V, Tzortzis S, Kadoglou N, Papadakis I, Trivilou P, Anastasiou-Nana M, Koukoulis C, Paraskevaidis I, Vriz O, Driussi C, Bettio M, Pavan D, Bossone E, Antonini Canterin F, Doltra Magarolas A, Fernandez-Armenta J, Silva E, Solanes N, Rigol M, Barcelo A, Mont L, Berruezo A, Brugada J, Sitges M, Ciciarello FL, Mandolesi S, Fedele F, Agati L, Marceca A, Rhee S, Shin S, Kim S, Yun K, Yoo N, Kim N, Oh S, Jeong J, Alabdulkarim N. Poster Session 4: Friday 9 December 2011, 14:00-18:00 * Location: Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
33
|
Devi NPG, Chandrasekaran K, Bhavani PK, Thiruvalluvan C, Swaminathan S. Persistence of stunting after highly active antiretroviral therapy in HIV-infected children in South India. Indian Pediatr 2011; 48:333-334. [PMID: 21532108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
After one year of antiretroviral treatment in 49 HIV infected children compared to 53 children without, weight for age improved significantly and was highly correlated with baseline immune status and CD4% increase but height for age did not change. Stunting is a common feature of pediatric HIV, both on and off HAART.
Collapse
|
34
|
Moustafa SE, Alharthi M, Kansal M, Deng Y, Chandrasekaran K, Mookadam F. Global left atrial dysfunction and regional heterogeneity in primary chronic mitral insufficiency. European Journal of Echocardiography 2011; 12:384-93. [DOI: 10.1093/ejechocard/jer033] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
35
|
Moustafa SE, Kansal M, Alharthi M, Deng Y, Chandrasekaran K, Mookadam F. Prediction of incipient left ventricular dysfunction in patients with chronic primary mitral regurgitation: a velocity vector imaging study. European Journal of Echocardiography 2011; 12:291-8. [DOI: 10.1093/ejechocard/jer003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
36
|
Kuznetsov VA, Kozhurina AO, Plusnin AV, Szulik M, Sredniawa B, Streb W, Lenarczyk R, Stabryla-Deska J, Sedkowska A, Kowalski O, Kalarus Z, Kukulski T, Katova TM, Nesheva A, Simova I, Hristova K, Kostova V, Boiadjiev L, Dimitrov N, Papamichalis Michalis MP, Sitafidis George SG, Dimopoulos Basilios BD, Kelepesis Glafkos GK, Economou Dimitrios DE, Skoularigis John JS, Triposkiadis Filippos FT, Attenhofer Jost CH, Pfyffer M, Naegeli B, Levis P, Faeh-Gunz A, Brunner-Larocca HP, Velasco Del Castillo MS, Cacicedo A, Onaindia JJ, Gonzalez Ruiz J, Subinas A, Alarcon JA, Quintana O, Rodriguez I, Laraudogoitia E, Lam YY, Henein MY, Mazzone A, Vianello A, Perlini S, Corciu AI, Cappelli S, Cerillo A, Chiappino D, Berti S, Glauber M, Herrmann S, Niemann M, Stoerk S, Strotmann J, Voelker W, Ertl G, Weidemann F, Yong ZY, Boerlage - Van Dijk K, Koch KT, Vis MM, Bouma BJ, Henriques JPS, Cocchieri R, De Mol BAJM, Piek JJ, Baan J, Keenan NGJ, Cueff C, Cimadevilla C, Brochet E, Lepage L, Detaint D, Iung B, Vahanian A, Messika-Zeitoun D, Otsuka T, Suzuki M, Yoshikawa H, Hashimoto G, Osaki T, Tsuchida T, Matsuyama M, Yamashita H, Ozaki S, Sugi K, Garcia Alonso CJ, Vallejo Camazon N, Ferrer Sistach E, Camara ML, Lopez Ayerbe J, Bosch Carabante C, Espriu Simon M, Gual Capllonch F, Bayes Genis A, Deswarte G, Vanesson C, Polge AS, Huchette D, Modine T, Marboeuf P, Lamblin N, Bauters C, Deklunder G, Le Tourneau T, Agricola A, Gullace M, Stella S, D'amato R, Slavich M, Oppizzi M, Ancona M, Margonato A, Le Ven F, Etienne Y, Jobic Y, Frachon I, Castellant P, Fatemi M, Blanc JJ, Muratori M, Montorsi P, Maffessanti F, Gripari P, Teruzzi G, Ghulam Ali S, Fusini L, Celeste F, Pepi M, Goebel B, Haugaa K, Meyer K, Otto S, Lauten A, Jung C, Edvardsen T, Figulla HR, Poerner TC, Aksoy H, Okutucu S, Evranos B, Aytemir K, Kaya EB, Kabakci G, Tokgozoglu L, Ozkutlu H, Oto A, Valeur N, Pedersen HH, Videbaek R, Hassager C, Svendsen JH, Kober L, Tigen MK, Karaahmet T, Gurel E, Pala S, Dundar C, Basaran Y, Caldararu CI, Ene E, Dorobantu M, Vatasescu RG, Tigen MK, Karaahmet T, Gurel E, Dundar C, Basaran Y, Tigen MK, Karaahmet T, Gurel E, Dundar C, Pala S, Basaran Y, Tigen MK, Pala S, Karaahmet T, Dundar C, Gurel E, Basaran Y, Cikes M, Bijnens B, Gasparovic H, Siric F, Velagic V, Lovric D, Samardzic J, Ferek-Petric B, Milicic D, Biocina B, Kjaergaard J, Ghio S, St John Sutton M, Hassager C, Moreau O, Kervio G, Thebault C, Leclercq C, Donal E, Mornos C, Rusinaru D, Petrescu L, Cozma D, Ionac A, Pescariu S, Dragulescu SI, Petrovic MZ, Vujisic-Tesic B, Milasinovic G, Petrovic MT, Nedeljkovic I, Zamaklar-Trifunovic D, Calovic Z, Jelic V, Boricic M, Petrovic I, Kuchynka P, Palecek T, Simek S, Nemecek E, Horak J, Hulinska D, Schramlova J, Vitkova I, Aster V, Linhart A, Paluszkiewicz L, Guersoy D, Ozegowski S, Spiliopoulos S, Koerfer R, Tenderich G, Gaggl M, Heinze G, Sunder-Plassmann G, Graf S, Zehetmayer M, Voigtlaender T, Mannhalter C, Paschke E, Fauler G, Mundigler G, Tesic M, Trifunovic D, Djordjevic-Dikic A, Petrovic O, Nedeljkovic I, Petrovic M, Boricic M, Beleslin B, Vujisic-Tesic B, Ostojic M, Trifunovic D, Tesic M, Vujisic-Tesic B, Petrovic O, Petrovic M, Nedeljkovic I, Boricic M, Draganic G, Ostojic M, Correia CE, Rodrigues B, Santos LF, Moreira D, Gama P, Nunes L, Nascimento C, Dionisio O, Santos O, Prinz C, Oldenburg O, Bitter T, Piper C, Horstkotte D, Faber L, Nemes A, Gavaller H, Csanady M, Forster T, Calcagnino M, O'mahony C, Tsovolas K, Lambiase PD, Elliott P, Olezac AS, Bensaid A, Nahum J, Teiger E, Dubois-Rande JL, Gueret P, Lim P, Prinz C, Langer C, Oldenburg O, Horstkotte D, Faber L, Kansal M, Surapaneni P, Sengupta PP, Lester SJ, Ommen SR, Ressler SW, Hurst RT, Monivas Palomero V, Mingo Santos S, Mitroi C, Garcia Lunar I, Garcia Pavia P, Gonzalez Mirelis J, Ruiz Bautista L, Castro Urda V, Toquero Ramos J, Fernandez Lozano I, Sommer A, Poulsen SH, Mogensen J, Thuesen L, Egeblad H, Montisci R, Ruscazio M, Vacca A, Garau P, Tuveri F, Soro C, Matthieu A, Meloni L, Kosmala W, Przewlocka-Kosmala M, Wojnalowicz A, Mysiak A, Marwick TH, Yotti R, Ripoll C, Bermejo J, Benito Y, Mombiela T, Rincon D, Barrio A, Banares R, Fernandez-Aviles F, Tomaszewski A, Kutarski A, Tomaszewski M, Ticulescu R, Vriz O, Sparacino L, Popescu BA, Ginghina C, Nicolosi GL, Carerj S, Antonini-Canterin F, Agricola E, Slavich M, Stella S, Ancona M, Oppizzi M, Bertoglio L, Melissano G, Margonato A, Chiesa R, Garcia Blas S, Iglesias Del Valle D, Lopez Fernandez T, Gomez De Diego JJ, Monedero Martin MC, Dominguez FJ, Moreno Yanguela M, Lopez Sendon JL, Adhya S, Murgatroyd FD, Monaghan M, Spinarova L, Meluzin J, Hude P, Krejci J, Podrouzkova H, Pesl M, Panovsky R, Dusek L, Orban M, Korinek J, Hammerstingl C, Schwiekendik M, Nickenig G, Momcilovic D, Lickfett L, Beladan CC, Calin A, Rosca M, Popescu BA, Muraru D, Voinea F, Popa E, Matei F, Curea F, Ginghina C, Di Salvo G, Pacileo G, Gala S, Castaldi B, D'aiello AF, Mormile A, Baldini L, Russo MG, Calabro R, Halvorsen PS, Dahle G, Bugge JF, Bendz B, Aaberge L, Rein KA, Fiane A, Bergsland J, Fosse E, Aakhus S, Koopman LP, Chahal N, Slorach C, Hui W, Sarkola T, Manlhiot C, Bradley TJ, Jaeggi ET, Mccrindle BW, Mertens L, Di Salvo G, Pacileo G, Castaldi B, Gala S, Baldini L, D'aiello FA, Mormilw A, Rea A, Russo MG, Calabro R, Calin A, Rosca M, O'Connor K, Romano G, Magne J, Beladan CC, Ginghina C, Pierard L, Lancellotti P, Popescu BA, Arita T, Ando K, Isotani A, Soga Y, Iwabuchi M, Nobuyoshi M, Hammerstingl C, Momcilovic D, Wiesen M, Nickenig G, Skowasch D, Mornos C, Cozma D, Rusinaru D, Ionac A, Pescariu S, Dragulescu SI, Niemann M, Breunig F, Beer M, Herrmann S, Strotmann J, Hu K, Voelker W, Ertl G, Wanner C, Weidemann F, Morel MA, Bernard YF, Descotes-Genon V, Meneveau N, Schiele F, Vitarelli A, Bernardi M, Scarno A, Caranci F, Padella V, Dettori O, Capotosto L, Vitarelli M, De Cicco V, Bruno P, Bajraktari G, Lindqvist P, Gustafsson U, Holmgren A, Henein MY, Hassan M, Said K, Baligh E, Farouk H, Osama D, Elmahdy MF, Elfaramawy A, Sorour K, Luckie M, Zaidi A, Fitzpatrick A, Khattar RS, Schwartz J, Huttin O, Popovic B, Zinzius PY, Christophe C, Marcon O, Groben L, Juilliere Y, Chabot F, Selton-Suty C, Krastev B, Kinova ETK, Zlatareva NIZ, Goudev ARG, Teske AJ, De Boeck BW, Mohames Hoesein FA, Van Driel V, Loh P, Cramer MJ, Doevendans PA, Dillenburg F, Mertens L, Abd El Salam KM, Ho EMM, Hall M, Hemeryck L, Bennett K, Scott K, King G, Murphy RT, Mahmud A, Brown AS, Dalen H, Thorstensen A, Romundstad PR, Aase SA, Stoylen A, Vatten L, Bochenek T, Wita K, Tabor Z, Doruchowska A, Lelek M, Trusz-Gluza M, Hamodraka E, Paraskevaidis I, Karamanou A, Michalakeas C, Vrettou H, Kapsali E, Tsiapras D, Lekakis I, Anastasiou-Nana M, Kremastinos D, Sirugo L, Bottari VE, Licciardi S, Blundo A, Atanasio A, Monte IP, Park CS, Kim JH, Cho JS, Kim MJ, Cho EJ, Ihm SH, Jung HO, Jeon HK, Youn HJ, Kim KS, Fontana A, Taravella L, Zambon A, Trocino G, Giannattasio C, Kalinin A, Alekhin M, Bahs G, Lejnieks A, Kalvelis A, Kalnins A, Shipachovs P, Zakharova E, Blumentale G, Trukshina M, Biering-Sorensen T, Mogelvang R, Haahr-Pedersen S, Schnohr P, Sogaard P, Skov Jensen J, Gargani L, Agoston G, Capati E, Badano L, Moreo A, Costantino MF, Caputo ML, Mondillo S, Sicari R, Picano E, Malev EG, Timofeev EV, Reeva SV, Zemtsovsky EV, Piazza R, Enache R, Roman-Pognuz A, Muraru D, Popescu BA, Leiballi E, Pecoraro R, Antonini-Canterin F, Ginghina C, Nicolosi GL, Sadeghian H, Lotfi_Tokaldany M, Rezvanfard M, Kasemisaeid A, Majidi S, Montazeri M, Saber-Ayad M, Nassar YS, Farhan A, Moussa A, El-Sherif A, Cooper RM, Somauroo JD, Shave RE, Williams KL, Forster J, George C, Bett T, Gaze DC, George KP, Mansencal N, Dupland A, Caille V, Perrot S, Bouferrache K, Vieillard-Baron A, Jouffroy R, Cioroiu SG, Alexe OS, Bobescu E, Rus H, Schiano Lomoriello V, Esposito R, Santoro A, Raia R, Farina F, Ippolito R, Galderisi M, Aburawi EH, Malcus P, Thuring A, Maxedius A, Pesonen E, Nair SV, Joyce E, Lee L, Shrimpton J, Newman E, James PR, Jurcut C, Caraiola S, Jurcut RO, Giusca S, Nitescu D, Amzulescu MS, Copaci I, Popescu BA, Tanasescu C, Ginghina C, Silva Marques J, Silva D, Ferreira F, Ferreira PC, Almeida AG, Martim Martins J, Lopes MG, Bergenzaun L, Chew M, Ersson A, Gudmundsson P, Ohlin H, Borowiec A, Dabrowski R, Wozniak J, Jasek S, Chwyczko T, Kowalik I, Musiej-Nowakowska E, Szwed H, Wen YL, Tian J, Yan L, Cheng H, Yang H, Luo B, Wang J, Kozman H, Villarreal D, Liu K, Karavidas A, Tsiachris D, Lazaros G, Matzaraki V, Xylomenos G, Levendopoulos G, Arapi S, Perpinia A, Matsakas E, Pyrgakis V, Liu YW, Su CT, Tsai WC, Huang JW, Hung KY, Chen JH, Larsson M, Kremer F, Kouznetsova T, Bjallmark A, Lind B, Brodin LA, D'hooge J, Santoro A, Caputo M, Antonelli G, Lisi M, Giacomin E, Mondillo S, Moustafa S, Alharthi M, Kansal M, Deng Y, Chandrasekaran K, Mookadam F, Hayashi SY, Bjallmark A, Larsson M, Nascimento MM, Lindholm B, Lind B, Seeberger A, Nowak J, Riella MC, Brodin LA, Theodosis A, Fousteris E, Tsiaousis G, Krommydas A, Margetis P, Katidis Z, Beldekos D, Argirakis S, Melidonis A, Foussas S, Khaleva O, Onyshchenko O, Lukaschuk E, Sherwi N, Nikitin N, Cleland JGF, Risum N, Jons C, Olsen NT, Valeur N, Kronborg MB, Jensen MT, Fritz-Hansen T, Bruun NE, Hojgaard MV, Sogaard P, Petrini J, Yousry M, Rickenlund A, Liska J, Franco-Cereceda A, Hamsten A, Eriksson P, Caidahl K, Eriksson MJ, Elmstedt N, Lind B, Ferm-Widlund K, Westgren M, Brodin LA, Szymczyk E, Kasprzak JD, Wozniakowski B, Rotkiewicz A, Szymczyk K, Stefanczyk L, Michalski B, Lipiec P, Ring L, Eller T, Deegan P, Rusk R, Urbano Moral JA, Arias JA, Kuvin JT, Patel AR, Pandian NG, Bellsham-Revell H, Bell AJ, Miller O, Greil GF, Simpson J, Moustafa S, Kansal M, Alharthi M, Deng Y, Chandrasekaran K, Mookadam F, Ancona R, Comenale Pinto S, Caso P, Severino S, Nunziata L, Roselli T, Calabro R, Dussault C, Donal E, Lafitte S, Habib G, Reant P, Derumeaux G, Thibault H, Gueret P, Lim P, Kaladaridis A, Agrios IA, Pamboucas CP, Mesogitis SM, Vasiladiotis NV, Bramos DB, Toumanidis STT, Martiniello AR, Santangelo G, Caso P, Pedrizzetti G, Tonti G, Cioppa C, Cavallaro M, Calvi V, Chianese R, Calabro R. Poster session I * Thursday 9 December 2010, 08:30-12:30. European Journal of Echocardiography 2010. [DOI: 10.1093/ejechocard/jeq136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
37
|
Dimova I, Hlushchuk R, Makanya A, Djonov V, Theurl M, Schgoer W, Albrecht K, Beer A, Patsch JR, Schratzberger P, Mahata S, Kirchmair R, Didie M, Christalla P, Rau T, Eschenhagen T, Schumacher U, Lin Q, Zenke M, Zimmmermann W, Hoch M, Fischer P, Stapel B, Missol-Kolka E, Erschow S, Scherr M, Drexler H, Hilfiker-Kleiner D, Diebold I, Petry A, Kennel P, Djordjevic T, Hess J, Goerlach A, Castellano J, Aledo R, Sendra J, Costales P, Badimon L, Llorente-Cortes V, Dworatzek E, Mahmoodzadeh S, Regitz-Zagrosek V, Posa A, Varga C, Berko A, Veszelka M, Szablics P, Vari B, Pavo I, Laszlo F, Brandenburger M, Wenzel J, Bogdan R, Richardt D, Reppel M, Hescheler J, Terlau H, Dendorfer A, Heijman J, Rudy Y, Westra R, Volders P, Rasmusson R, Bondarenko V, Ertas Gokhan MD, Ural Ertan MD, Karaoz Erdal PHD, Aksoy Ayca PHD, Kilic Teoman MD, Kozdag Guliz MD, Vural Ahmet MD, Ural Dilek MD, Poulet C, Christ T, Wettwer E, Ravens U, Van Der Pouw Kraan C, Schirmer S, Fledderus J, Moerland P, Leyen T, Piek J, Van Royen N, Horrevoets A, Fleissner F, Jazbutyte V, Fiedler J, Galuppo P, Mayr M, Ertl G, Bauersachs J, Thum T, Protze S, Bussek A, Ravens U, Li F, Hoo R, Lam K, Xu A, Westenbrink B, Maass A, Sillje H, Van Veldhuisen D, Van Gilst W, De Boer R, Biesmans L, Bito V, Driessen R, Holemans P, Subramanian P, Lenaerts I, Huysmans C, Sipido K, Mourouzis I, Pantos C, Galanopoulos G, Gavra M, Perimenis P, Spanou D, Cokkinos D, Karshovska E, Berezin A, Panasenko T, Euler G, Partsch S, Harjung C, Heger J, Bogdanova A, Mihov D, Mocharla P, Yakushev S, Megens R, Vogel J, Gassmann M, Tavakoli R, Johansen D, Sanden E, Xi C, Sundset R, Ytrehus K, Bliksoen M, Rutkovskiy A, Akhtar S, Mariero L, Vaage I, Stenslokken K, Pisarenko O, Shulzhenko V, Studneva I, Serebryakova L, Tskitishvili O, Pelogeykina Y, Timoshin A, Heyll K, Vanin A, Ziberna L, Lunder M, Drevensek G, Passamonti S, Gorza L, Ravara B, Scapin C, Vitadello M, Zigrino F, Jansen Y, Gerosa G, Gwathmey J, Del Monte F, Vilahur G, Juan-Babot O, Onate B, Casani L, Badimon L, Lemoine S, Calmettes G, Weber C, Jaspard-Vinassa B, Duplaa C, Couffinhal T, Diolez P, Dos Santos P, Fusco A, Santulli G, Cipolletta E, Sorriento D, Cervero P, Schober A, Trimarco B, Feliciello A, Iaccarino G, Loganathan S, Barnucz E, Korkmaz S, Hirschberg K, Karck M, Szabo G, Kozichova K, Zafeiriou M, Hlavackova M, Neckar J, Kolar F, Novakova O, Novak F, Kusmic C, Matteucci M, Pelosi G, Vesentini N, Barsanti C, Noack C, Trivella M, Abraham N, L'abbate A, Muntean D, Mirica S, Duicu O, Raducan A, Hancu M, Fira-Mladinescu O, Ordodi V, Renger A, Voelkl J, Haubner B, Neely G, Moriell C, Seidl S, Pachinger O, Penninger J, Metzler B, Dietz R, Zelarayan L, Bergmann M, Meln I, Malashicheva A, Anisimov S, Kalinina N, Sysoeva V, Zaritskey A, Barbuti A, Scavone A, Mazzocchi N, Crespi A, Capilupo D, Difrancesco D, Qian L, Shim W, Gu Y, Mohammed S, Wong P, Noack C, Renger A, Zafiriou M, Dietz R, Schaeffer H, Bergmann M, Zelarayan L, Kovacs P, Simon J, Christ T, Wettwer E, Varro A, Ravens U, Athias P, Wolf J, Bouchot O, Vandroux D, Mathe A, De Carvalho A, Laurent G, Rainer P, Huber M, Edelmann F, Stojakovic T, Trantina-Yates A, Trauner M, Pieske B, Von Lewinski D, De Jong A, Maass A, Oberdorf-Maass S, Van Gelder I, Lin Y, Li J, Wang F, He Y, Li X, Xu H, Yang X, Coppini R, Ferrantini C, Ferrara C, Rossi A, Mugelli A, Poggesi C, Cerbai E, Rozmaritsa N, Voigt N, Christ T, Wettwer E, Dobrev D, Ravens U, Kienitz MC, Zoidl G, Bender K, Pott L, Kohajda Z, Kristof A, Kovacs P, Virag L, Varro A, Jost N, Voigt N, Trafford A, Ravens U, Dobrev D, Prnjavorac B, Mujaric E, Jukic J, Abduzaimovic K, Brack K, Patel V, Coote J, Ng G, Wilders R, Van Ginneken A, Verkerk A, Brack K, Coote J, Ng G, Xaplanteris P, Vlachopoulos C, Baou K, Vassiliadou C, Dima I, Ioakeimidis N, Stefanadis C, Ruifrok W, Qian C, Sillje H, Van Goor H, Van Veldhuisen D, Van Gilst W, De Boer R, Schmidt K, Kaiser F, Erdmann J, De Wit C, Barnett O, Kyyak Y, Cesana F, Boffi L, Mauri T, Alloni M, Betelli M, Nava S, Giannattasio C, Mancia G, Vilskersts R, Kuka J, Svalbe B, Liepinsh E, Dambrova M, Zakrzewicz A, Maroski J, Vorderwuelbecke B, Fiedorowicz K, Da Silva-Azevedo L, Pries A, Gryglewska B, Necki M, Zelawski M, Grodzicki T, Scoditti E, Massaro M, Carluccio M, Distante A, Storelli C, De Caterina R, Kocgirli O, Valcaccia S, Dao V, Suvorava T, Kumpf S, Floeren M, Oppermann M, Kojda G, Leo C, Ziogas J, Favaloro J, Woodman O, Goettsch W, Marton A, Goettsch C, Morawietz H, Khalifa E, Ashour Z, Dao V, Floeren M, Kumpf S, Suvorava T, Kojda G, Rupprecht V, Scalera F, Martens-Lobenhoffer J, Bode-Boeger S, Li W, Kwan Y, Leung G, Patella F, Mercatanti A, Pitto L, Rainaldi G, Tsimafeyeu I, Tishova Y, Wynn N, Kalinchenko S, Clemente Lorenzo M, Grande M, Barriocanal F, Aparicio M, Martin A, Hernandez J, Lopez Novoa J, Martin Luengo C, Kurlianskaya A, Denisevich T, Leo C, Ziogas J, Favaloro J, Woodman O, Barth N, Loot A, Fleming I, Wang Y, Gabrielsen A, Ripa R, Jorgensen E, Kastrup J, Arderiu G, Pena E, Badimon L, Kobus K, Czyszek J, Kozlowska-Wiechowska A, Milkiewicz P, Milkiewicz M, Madonna R, Montebello E, Geng Y, De Caterina R, Chin-Dusting J, Michell D, Skilton M, Dixon J, Dart A, Moore X, Hlushchuk R, Ehrbar M, Reichmuth P, Heinimann N, Djonov V, Hewing B, Stangl V, Stangl K, Laule M, Baumann G, Ludwig A, Widmer-Teske R, Mueller A, Stieger P, Tillmanns H, Braun-Dullaeus R, Sedding D, Troidl K, Eller L, Benli I, Apfelbeck H, Schierling W, Troidl C, Schaper W, Schmitz-Rixen T, Hinkel R, Trenkwalder T, Pfosser A, Globisch F, Stachel G, Lebherz C, Bock-Marquette I, Kupatt C, Seyler C, Duthil-Straub E, Zitron E, Scholz E, Thomas D, Gierten J, Karle C, Fink R, Padro T, Lugano R, Garcia-Arguinzonis M, Badimon L, Schuchardt M, Pruefer J, Toelle M, Pruefer N, Jankowski V, Jankowski J, Zidek W, Van Der Giet M, Pena E, Arderiu G, Badimon L, Fransen P, Van Hove C, Michiels C, Van Langen J, Bult H, Quarck R, Wynants M, Alfaro-Moreno E, Rosario Sepulveda M, Wuytack F, Van Raemdonck D, Meyns B, Delcroix M, Christofi F, Wijetunge S, Sever P, Hughes A, Ohanian J, Forman S, Ohanian V, Wijetunge S, Hughes A, Gibbons C, Ohanian J, Ohanian V, Costales P, Aledo R, Vernia S, Das A, Shah V, Casado M, Badimon L, Llorente-Cortes V, Fransen P, Van Hove C, Van Langen J, Bult H, Bielenberg W, Daniel J, Tillmanns H, Sedding D, Daniel JM, Hersemeyer K, Schmidt-Woell T, Kaetzel D, Tillmans H, Sedding D, Kanse S, Tuncay E, Kandilci H, Zeydanli E, Sozmen N, Akman D, Yildirim S, Turan B, Nagy N, Acsai K, Farkas A, Papp J, Varro A, Toth A, Viero C, Mason S, Williams A, Marston S, Stuckey D, Dyer E, Song W, El Kadri M, Hart G, Hussain M, Faltinova A, Gaburjakova J, Urbanikova L, Hajduk M, Tomaskova B, Antalik M, Zahradnikova A, Steinwascher P, Jaquet K, Muegge A, Ferrantini C, Coppini R, Wang G, Zhang M, Cerbai E, Tesi C, Poggesi C, Ter Keurs H, Kettlewell S, Smith G, Workman A, Acsai K, Lenaerts I, Holemans P, Sokolow S, Schurmans S, Herchuelz A, Sipido K, Antoons G, Wehrens X, Li N, Respress JR, De Almeida A, Van Oort R, Bussek A, Lohmann H, Christ T, Wettwer E, Ravens U, Saes M, Muegge A, Jaquet K, Messer A, Copeland O, Leung M, Marston S, Matthes F, Steinbrecher J, Salinas-Riester G, Opitz L, Hasenfuss G, Lehnart S, Caracciolo G, Eleid M, Carerj S, Chandrasekaran K, Khandheria B, Sengupta P, Riaz I, Tyng L, Dou Y, Seymour A, Dyer C, Griffin S, Haswell S, Greenman J, Yasushige S, Amorim P, Nguyen T, Schwarzer M, Mohr F, Doenst T, Popin Sanja S, Lalosevic D, Capo I, Momcilov Popin T, Astvatsatryan A, Senan M, Astvatsatryan A, Senan M, Shafieian G, Goncalves N, Falcao-Pires I, Henriques-Coelho T, Moreira-Goncalves D, Leite-Moreira A, Bronze Carvalho L, Azevedo J, Andrade M, Arroja I, Relvas M, Morais G, Seabra M, Aleixo A, Winter J, Brack K, Ng G, Zabunova M, Mintale I, Lurina D, Narbute I, Zakke I, Erglis A, Astvatsatryan A, Senan M, Marcinkevics Z, Kusnere S, Abolins A, Aivars J, Rubins U, Nassar Y, Monsef D, Hamed G, Abdelshafy S, Chen L, Wu Y, Wang J, Cheng C, Sternak M, Khomich T, Jakubowski A, Szafarz M, Szczepanski W, Mateuszuk L, Szymura-Oleksiak J, Chlopicki S, Sulicka J, Strach M, Kierzkowska I, Surdacki A, Mikolajczyk T, Balwierz W, Guzik T, Grodzicki T, Dmitriev V, Oschepkova E, Polovitkina O, Titov V, Rogoza A, Shakur R, Metcalfe S, Bradley J, Demyanets S, Kaun C, Kastl S, Pfaffenberger S, Huk I, Maurer G, Huber K, Wojta J, Eriksson O, Aberg M, Siegbahn A, Prnjavorac B, Niccoli G, Sgueglia G, Conte M, Giubilato S, Cosentino N, Ferrante G, Crea F, Dmitriev V, Oschepkova E, Polovitkina O, Titov V, Ilisei D, Leon M, Mitu F, Kyriakakis E, Philippova M, Cavallari M, Bochkov V, Biedermann B, De Libero G, Erne P, Resink T, Titov V, Bakogiannis C, Antoniades C, Tousoulis D, Demosthenous M, Psarros C, Sfyras N, Channon K, Stefanadis C, Del Turco S, Navarra T, Basta G, De Caterina R, Carnicelli V, Frascarelli S, Zucchi R, Kostareva A, Malashicheva A, Sjoberg G, Gudkova A, Semernin E, Shlyakhto E, Sejersen T, Cucu N, Anton M, Stambuli D, Botezatu A, Arsene C, Lupeanu E, Anton G, Beer A, Theurl M, Schgoer W, Albrecht K, Patsch J, Huber E, Schratzberger P, Kirchmair R, Lande C, Cecchettini A, Tedeschi L, Trivella M, Citti L, Chen B, Ma Y, Yang Y, Ma X, Liu F, Hasanzad M, Rejali L, Fathi M, Minassian A, Mohammad Hassani R, Najafi A, Sarzaeem M, Sezavar S, Akhmedov A, Klingenberg R, Yonekawa K, Lohmann C, Gay S, Maier W, Neithard M, Luescher T, Xie X, Ma Y, Yang Y, Fu Z, Li X, Ma X, Liu F, Chen B, Kevorkov A, Verduci L, Mercatanti A, Cremisi F, Pitto L, Wonnerth A, Katsaros K, Zorn G, Kaun C, Weiss T, Huber K, Maurer G, Wojta J, De Rosa R, Galasso G, Piscione F, Santulli G, Iaccarino G, Piccolo R, Luciano R, Chiariello M, Szymanski M, Schoemaker R, Van Veldhuisen D, Van Gilst W, Hillege H, Rizzo S, Basso C, Thiene G, Valente M, Rickelt S, Franke W, Bartoloni G, Bianca S, Giurato E, Barone C, Ettore G, Bianca I, Eftekhari P, Wallukat G, Bekel A, Heinrich F, Fu M, Briedert M, Briand J, Roegel J, Rizzo S, Pilichou K, Basso C, Thiene G, Korkmaz S, Radovits T, Pali S, Hirschberg K, Zoellner S, Loganathan S, Karck M, Szabo G, Bartoloni G, Pucci A, Pantaleo J, Martino S, Pelosi G, Matteucci M, Kusmic C, Vesentini N, Piccolomini F, Viglione F, Trivella M, L'abbate A, Slavikova J, Chottova Dvorakova M, Kummer W, Campanile A, Spinelli L, Santulli G, Ciccarelli M, De Gennaro S, Assante Di Panzillo E, Trimarco B, Iaccarino G, Akbarzadeh Najar R, Ghaderian S, Tabatabaei Panah A, Vakili H, Rezaei Farimani A, Rezaie G, Beigi Harchegani A, Falcao-Pires I, Hamdani N, Gavina C, Van Der Velden J, Niessen H, Stienen G, Leite-Moreira A, Paulus W, Goncalves N, Falcao-Pires I, Moura C, Lamego I, Eloy C, Niessen H, Areias J, Leite-Moreira A, Bonda T, Dziemidowicz M, Hirnle T, Dmitruk I, Kaminski K, Musial W, Winnicka M, Villar A, Merino D, Ares M, Pilar F, Valdizan E, Hurle M, Nistal J, Vera V, Toelle M, Van Der Giet M, Zidek W, Jankowski J, Astvatsatryan A, Senan M, Karuppasamy P, Chaubey S, Dew T, Sherwood R, Desai J, John L, Marber M, Kunst G, Cipolletta E, Santulli G, Attanasio A, Del Giudice C, Campiglia P, Illario M, Iaccarino G, Berezin A, Koretskaya E, Bishop E, Fearon I, Heger J, Warga B, Abdallah Y, Meyering B, Schlueter K, Piper H, Euler G, Lavorgna A, Cecchetti S, Rio T, Coluzzi G, Carrozza C, Conti E, Crea F, Andreotti F, Berezin A, Glavatskiy A, Uz O, Kardesoglu E, Yiginer O, Bas S, Ipcioglu O, Ozmen N, Aparci M, Cingozbay B, Ivanes F, Hillaert M, Susen S, Mouquet F, Doevendans P, Jude B, Montalescot G, Van Belle E, Leon M, Ilisei D, Mitu F, Castellani C, Angelini A, De Boer O, Van Der Loos C, Gerosa G, Thiene G, Van Der Wal A, Dumitriu I, Baruah P, Kaski J, Maytham O, D Smith J, Rose M, Cappelletti A, Pessina A, Mazzavillani M, Calori G, Margonato A, De Rosa R, Galasso G, Piscione F, Cassese S, Piccolo R, Luciano R, D'anna C, Chiariello M, Niccoli G, Ferrante G, Leo A, Giubilato S, Silenzi A, Baca' M, Biasucci L, Crea F, Baller D, Gleichmann U, Holzinger J, Bitter T, Horstkotte D, Bakogiannis C, Antoniades C, Antonopoulos A, Tousoulis D, Miliou A, Triantafyllou C, Channon K, Stefanadis C, Masson W, Siniawski D, Sorroche P, Casanas L, Scordo W, Krauss J, Cagide A, Schuchardt M, Toelle M, Huang T, Wiedon A, Van Der Giet M, Chin-Dusting J, Lee S, Walker K, Dart A, O'dea K, Skilton M, Perez Berbel P, Arrarte Esteban V, Garcia Valentin M, Sola Villalpando M, Lopez Vaquero C, Caballero L, Quintanilla Tello M, Sogorb Garri F, Duerr G, Elhafi N, Bostani T, Swieny L, Kolobara E, Welz A, Roell W, Dewald O, Kaludercic N, Takimoto E, Nagayama T, Chen K, Shih J, Kass D, Di Lisa F, Paolocci N, Vinet L, Pezet M, Briec F, Previlon M, Rouet-Benzineb P, Hivonnait A, Charpentier F, Mercadier J, Villar A, Cobo M, Llano M, Montalvo C, Exposito V, Nistal J, Hurle M, Ruifrok W, Meems L. Saturday, 17 July 2010. Cardiovasc Res 2010. [DOI: 10.1093/cvr/cvq174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
38
|
Yang HS, Mookadam F, Warsame TA, Khandheria BK, Tajik JA, Chandrasekaran K. Evaluation of right ventricular global and regional function during stress echocardiography using novel velocity vector imaging. European Journal of Echocardiography 2009; 11:157-64. [DOI: 10.1093/ejechocard/jep190] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
39
|
Krishna MB, Ranjit M, Chandrasekaran K, Venkateswarlu G, Karunasagar D. On-line preconcentration and recovery of palladium from waters using polyaniline (PANI) loaded in mini-column and determination by ICP-MS; elimination of spectral interferences. Talanta 2009; 79:1454-63. [DOI: 10.1016/j.talanta.2009.06.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 06/02/2009] [Accepted: 06/03/2009] [Indexed: 11/28/2022]
|
40
|
McGregor C, Byrne G, Vlasin M, Walker R, Tazelaar H, Davies W, Chandrasekaran K, Oehler E, Boilson B, Wiseman B, Logan J. 456: Preclinical Orthotopic Cardiac Xenotransplantation. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
41
|
Raichlin E, Villarraga HR, Chandrasekaran K, Clavell AL, Frantz RP, Kushwaha SS, Rodeheffer RJ, McGregor CG, Daly RC, Park SJ, Kremers WK, Edwards BS, Pereira NL. Cardiac allograft remodeling after heart transplantation is associated with increased graft vasculopathy and mortality. Am J Transplant 2009; 9:132-9. [PMID: 19067662 DOI: 10.1111/j.1600-6143.2008.02474.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The aim of this study was to assess the patterns, predictors and outcomes of left ventricular remodeling after heart transplantation (HTX). Routine echocardiographic studies were performed and analyzed at 1 week, 1 year and 3-5 years after HTX in 134 recipients. At each study point the total cohort was divided into three subgroups based on determination of left ventricle mass and relative wall thickness: (1) NG-normal geometry (2) CR-concentric remodeling and (3) CH-concentric hypertrophy. Abnormal left ventricular geometry was found as early as 1 week after HTX in 85% of patients. Explosive mode of donor brain death was the most significant determinant of CH (OR 2.9, p = 0.01) at 1 week. CH at 1 week (OR 2.72, p = 0.01), increased body mass index (OR 1.1, p = 0.01) and cytomegalovirus viremia (OR - 4.06, p = 0.02) were predictors of CH at 1 year. CH of the cardiac allograft at 1 year was associated with increased mortality as compared to NG (RR 1.87, p = 0.03). CR (RR 1.73, p = 0.027) and CH (RR 2.04, p = 0.008) of the cardiac allograft at 1 year is associated with increased subsequent graft arteriosclerosis as compared to NG.
Collapse
Affiliation(s)
- E Raichlin
- Division of Cardiology, William J. Von Liebig Transplant Center, Mayo Clinic, Rochester, MN, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Chandrasekaran K, Arivarignan G. Disease mapping using mixture distribution. Indian J Med Res 2006; 123:788-98. [PMID: 16885601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
BACKGROUND & OBJECTIVES Data on infectious diseases like tuberculosis (TB) have been analyzed in the past without giving adequate attention to spatial variations. Earlier studies also attempted to display disease status of sub regions, usually census tracts, by categorizing them into quartiles, that helps the authorities to identify high- or low-risk areas. This approach is based mainly on binomial and Poisson models for disease data, and the recent attempts focus on using mixture models of Poisson distribution. We carried out this study to find wards of Madurai Corporation having high risks for TB disease, to develop a model of mixture of Poisson distributions for the number of cases and to classify each ward to one of many risk groups for TB disease, and to represent spatial distribution of TB incidence in Madurai city. METHODS produced the observed counts of TB patients in 72 wards of Madurai Corporation. The number of risk groups and the Poisson parameters of each group were found by maximum likelihood approach using the computer package C.A.MAN (Computer Assisted Mixture ANalysis). Bayesian methods were used to associate each ward to a particular risk group. The results were geographically presented in maps by using ArcView mapping software. RESULTS Using binomial model, 26 wards were categorized as high risk wards, and with mixture model approach 15 wards showed standardized morbility ratio (SMR) >1. The wards along river Vaigai and densely populated wards had high risk. INTERPRETATION & CONCLUSION Our findings demonstrate the usefulness of the mixture models for disease data with geographical variations.
Collapse
Affiliation(s)
- K Chandrasekaran
- Tuberculosis Research Centre (Madurai Unit), ICMR, Government Rajaji Hospital, Madurai, India.
| | | |
Collapse
|
43
|
Packer DL, Keelan P, Munger TM, Breen JF, Asirvatham S, Peterson LA, Monahan KH, Hauser MF, Chandrasekaran K, Sinak LJ, Holmes DR. Clinical presentation, investigation, and management of pulmonary vein stenosis complicating ablation for atrial fibrillation. Circulation 2005; 111:546-54. [PMID: 15699274 DOI: 10.1161/01.cir.0000154541.58478.36] [Citation(s) in RCA: 229] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Although segmental or circumferential ablation is effective in eliminating pulmonary vein (PV)-mediated atrial fibrillation (AF), this procedure may be complicated by the occurrence of PV stenosis. METHODS AND RESULTS To establish the clinical presentation, diagnostic manifestations, and interventional management of PV stenosis, 23 patients with stenosis of 34 veins complicating ablation of AF were evaluated. Each patient became symptomatic 103+/-100 days after undergoing ablation. In 8 veins, the ablation producing the PV stenosis was a repeated procedure for continued AF. Nineteen patients presented with dyspnea on exertion, 7 with dyspnea at rest, 9 with cough, and 6 with chest pain. On multirow spiral computed tomography examination, the narrowest lumen of the affected PVs measured 3+/-2 mm compared with 13+/-3 mm at baseline (P< or =0.001). The relative perfusion of affected lung segments on isotope scans was reduced to 4+/-3% of total perfusion compared with 22+/-10% in unaffected segments. At percutaneous intervention, these veins showed 80+/-13% stenosis, with a mean gradient of 12+/-5 mm Hg. This was significantly reduced to a residual stenosis of 9+/-8% (P< or =0.001) and a residual gradient of 3+/-4 mm Hg (P< or =0.001). Twenty veins were treated with balloon dilatation alone, whereas 14 veins were stented with standard 10-mm-diameter bare-metal stents. Although the symptomatic response was nearly immediate and impressive, 14 patients developed in-stent or in-segment restenosis, requiring repeated interventions in 13. CONCLUSIONS Percutaneous intervention produces rapid and dramatic symptom relief in patients with highly symptomatic PV stenosis after radiofrequency ablation for AF. Nevertheless, alternative treatment methods will be required to decrease recurrent in-stent or in-segment restenosis.
Collapse
Affiliation(s)
- Douglas L Packer
- Division of Cardiac Electrophysiology/Cardiology, Department of Internal Medicine, Mayo Clinic and Foundation, Saint Mary's Hospital Complex, Rochester, Minn 55902, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Chandrasekaran K, Liu LI, Hatanpää K, Shetty U, Mehrabian Z, Murray PD, Fiskum G, Rapoport SI. Chronic exposure of neural cells to elevated intracellular sodium decreases mitochondrial mRNA expression. Mitochondrion 2005; 1:141-50. [PMID: 16120274 DOI: 10.1016/s1567-7249(01)00010-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2000] [Revised: 03/21/2001] [Accepted: 03/29/2001] [Indexed: 12/30/2022]
Abstract
Regulation of expression of mitochondrial DNA- (mtDNA-) encoded genes of oxidative phosphorylation can occur rapidly in neural cells subjected to a variety of physiological and pathological conditions. However, the intracellular signal(s) involved in regulating these processes remain unknown. Using mtDNA-encoded cytochrome oxidase subunit III (COX III), we show that its mRNA expression in a differentiated rat pheochromocytoma cell line PC12S is decreased by chronic exposure to agents that increase intracellular sodium. Treatment of differentiated PC12S cells either with ouabain, an inhibitor of Na/K-ATPase, or with monensin, a sodium ionophore, decreased the steady-state levels of COX III mRNA by 50%, 3-4 h after addition of the drugs. No significant reduction in mtDNA-encoded 12S rRNA or nuclear DNA-encoded beta-actin mRNA were observed. Removal of the drugs restored the normal levels of COX III mRNA. Determination of half-lives of COX III mRNA, 12S rRNA, and beta-actin mRNA revealed a selective decrease in the half-life of COX III mRNA from 3.3 h in control cells to 1.6 h in ouabain-treated cells, and to 1 h in monensin-treated cells. These results suggest the existence of a mechanism of posttranscriptional regulation of mitochondrial gene expression that is independent of the energetic status of the cell and may operate under pathological conditions.
Collapse
Affiliation(s)
- K Chandrasekaran
- Department of Anesthesiology, University of Maryland School of Medicine, MSTF 5-34, 685 West Baltimore Street, Baltimore, MD 21201, USA.
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Dhavile SM, Thangavel S, Chandrasekaran K, Dash K, Rao SV, Chaurasia SC. In situ matrix evaporation by isothermal distillation of high-purity reagents for the determination of trace impurities by ion chromatography. J Chromatogr A 2004; 1050:223-7. [PMID: 15508316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
In situ matrix evaporation of high-purity acids based on isothermal distillation was achieved in a high-density polyethylene (HDPE) container on a water bath, to avoid contamination from the laboratory environment. The solubility of water and acid vapours in glycerol due to co-association was utilized to achieve complete evaporation. All major sources which contribute to the process blank were taken care of in a simple and effective way. A 50-fold preconcentration with >99.9% matrix removal was achieved for the analysis of low-boiling acids, HCl, HF, HNO3 and H2O2. The non-volatile ions NH4+, Li+, Na+, K+, Mg2+, Ca2+, SO4(2-) and PO4(3-) were determined by ion chromatograph with conductivity detection. The detection limits were 6-130 ng/l with recoveries of 85-110% for all ions studied.
Collapse
Affiliation(s)
- S M Dhavile
- National Centre for Compositional Characterisation of Materials (CCCM), Bhabha Atomic Research Centre, Hyderabad 500062, India
| | | | | | | | | | | |
Collapse
|
46
|
Dash K, Thangavel S, Rao SV, Chandrasekaran K, Chaurasia SC, Arunachalam J. Ion chromatographic determination of trace level phosphorus in purified quartz. J Chromatogr A 2004; 1036:223-7. [PMID: 15146925 DOI: 10.1016/j.chroma.2004.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trace levels of phosphorus in purified quartz are determined by ion chromatography. In situ reagent purification, matrix digestion and oxidation of phosphorus to orthophosphate ion are carried out simultaneously in a vapour phase digestion (VPD) assembly using a mixture of HF, HNO3 and H2O2. A drastic reduction (475 times) in phosphate blank from reagents (HF/H2O2) was achieved in the VPD through in situ purification of the reagent. The residues remaining after volatilisation (solvent/matrix), mostly consisting of insoluble phosphate/fluoride salts of divalent and trivalent cations, were solubilised by ion-exchange dissolution. Phosphate was analysed on the IonPac AS17 column with suppressed conductivity detection. The results of the ion chromatography (IC) method were compared with a spectrophotometric method. Accuracy was evaluated by analysing a certified reference material (silicon, NIST 57a). The method detection limit was 0.05 microg g(-1).
Collapse
Affiliation(s)
- K Dash
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL (P.O.), Hyderabad City, Andhra Pradesh 500062, India
| | | | | | | | | | | |
Collapse
|
47
|
Dash K, Chandrasekaran K, Thangavel S, Dhaville SM, Arunachalam J. Determination of trace metallic impurities in high-purity quartz by ion chromatography. J Chromatogr A 2004; 1022:25-31. [PMID: 14753768 DOI: 10.1016/j.chroma.2003.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A method has been developed for the determination of relevant trace impurities (alkali, alkaline and transition metals) in high purity quartz by ion-chromatography. In situ reagent (HF) purification and simultaneous sample dissolution was achieved in a multichannel vapour phase digestion assembly. Twenty-one samples can be digested at a time in this vapour phase system. Significant decrease in the process blank levels for all the analytes was observed. Drastic reduction (250 times) of NH4+ blank was achieved in the described vapour phase digestion, which enables the determination of trace concentration of sodium in high purity quartz. After volatilisation of the matrix and unreacted HF, the clear water leached solutions were injected into an ion-chromatograph equipped with conductivity detector for the determination of alkali and alkaline earth metals. In the case of transition metals, the trace residues were leached with 10 mM HCl and after separation on a mixed bed analytical column (IonPac CS5) were detected by spectrophotometry after post column derivatisation using 4-(2-pyridylazo)resorcinol (PAR). The accuracy of the result was checked by their comparison with those obtained by independent methods like inductively coupled plasma (ICP) MS and ICP atomic emission spectrometry. The achievable detection limits are between 0.4 ng/g (Li) and 22 ng/g (Mn). The application of the method to the determination of the above trace metals in two high-purity-grade quartz samples is demonstrated.
Collapse
Affiliation(s)
- K Dash
- National Centre for Compositional Characterisation of Materials, Bhabha Atomic Research Centre, ECIL (PO), Hyderabad City, Andhra Pradesh 500062, India
| | | | | | | | | |
Collapse
|
48
|
Gowrishankar N, Chandrasekaran K, Manavalan R, Venkappayya D. Preliminary phytochemical studies on bark of commiphora berryi (arn) engllor. Anc Sci Life 2004; 24:88-91. [PMID: 22557159 PMCID: PMC3330921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2004] [Accepted: 08/28/2004] [Indexed: 11/15/2022] Open
Abstract
Commiphora berryi (Arn)Englor (Burseraceae) is a well known plant in Tamil nadu, India. It is used in several parts of the state for various medicinal properties. The present work summarizes preliminary phyto chemical study of bark of this plant.
Collapse
Affiliation(s)
- N.L. Gowrishankar
- Department of Pharmacognosy, Swamy Vivekanandha College of Pharmacy, Tiruchengode, India
| | - K. Chandrasekaran
- Department of Pharmacognosy, Swamy Vivekanandha College of Pharmacy, Tiruchengode, India
| | - R. Manavalan
- Institute of Pharmaceutical Technology, Annamali University, Chidambaram, India
| | - D. Venkappayya
- School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur – 613 402, India
| |
Collapse
|
49
|
Al Ahmari S, Malouf J, Al Atawi F, Schaff H, Chandrasekaran K. Anatomical basis for acquired intracardiac shunt postaortic valve replacement: Doppler echocardiographic diagnosis. European Journal of Echocardiography 2004; 5:68-71. [PMID: 15113014 DOI: 10.1016/s1525-2167(03)00040-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a case of postoperative intracardiac shunts across the membranous septum detected by Doppler echocardiography and discuss the anatomical basis for the development of such a complication.
Collapse
Affiliation(s)
- S Al Ahmari
- Cardiovascular Division, Echocardiography Laboratory, Mayo Clinic, 200 First Street SW, Gonda 6-138 NW, Rochester, MN 55905, USA
| | | | | | | | | |
Collapse
|
50
|
Pfizenmaier DH, Al Atawi FO, Castillo Y, Chandrasekaran K, Cooper LT. Predictors of left ventricular dysfunction in patients with Takayasu's or giant cell aortitis. Clin Exp Rheumatol 2004; 22:S41-5. [PMID: 15675134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
OBJECTIVES The aim of this study was to determine the clinical and angiographic predictors of left ventricular systolic dysfunction (LVSD) from a relatively large and angiographically characterized Takayasu's or Giant Cell aortitis (TA/GCA) population. BACKGROUND LVSD in patients with TA/GCA has been described in case reports and attributed variously to hemodynamic and immunologic factors. The predictors of LVSD in patients with angiographically confirmed TA/GCA are not known. METHODS We identified 78 patients with angiographically confirmed TA/ GCA that underwent transthoracic echocardiography (TTE) at Mayo Clinic. Echocardiograms were then reviewed independently by reviewers blinded to clinical and angiographic data. LVSD was defined as an ejection fraction (LVEF) less than 50%. RESULTS The study population was 84% Caucasian (54/78), 91% female (58/78), and had a mean age of disease onset of 30 years (+/- 15 years). LVSD was present in 14 of 78 patients (18%) with TA/GCA. The mean LVEF in the LVSD group (n = 14) was 37% +/- 7%, compared to an LVEF of 62% +/- 6% (p < 0.0001) in those without LVSD (n = 64). LVSD was not associated with hypertension or aortic regurgitation (p > 0.5). However, LVSD was found in 43% (9/21) of patients with aortic arch involvement, versus only 9% (5/57) of patients without aortic arch involvement (p = 0.0013). Patients with LVSD had a median of 2 (range 1-4) involved aortic segments compared to a median of 1 (range 1-4) among those without LVSD (p = 0.013). CONCLUSIONS In TA/GCA aortitis, LVSD is associated with involvement of the aortic arch and with the greater extent of aortic involvement. The hemodynamic variables, aortic regurgitation and systemic hypertension, were not associated with LVSD, consistent with reports that cardiac inflammation is responsible for LVSD in a majority of cases. Ours is the first study to estimate an incidence of LVSD in patients with TA/GCA aortitis, which was 18%.
Collapse
Affiliation(s)
- D H Pfizenmaier
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota 55905, USA
| | | | | | | | | |
Collapse
|