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Crawford G, Lobo R, Maycock B, Brown G. More than mateship: exploring how Australian male expatriates, longer-term and frequent travellers experience social support. Int J Qual Stud Health Well-being 2023; 18:2251222. [PMID: 37643465 PMCID: PMC10467526 DOI: 10.1080/17482631.2023.2251222] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 08/18/2023] [Indexed: 08/31/2023] Open
Abstract
PURPOSE Those travelling overseas for work or leisure including male expatriates, longer-term and frequent travellers (ELoFTs) may be at heightened risk for a range of health and wellbeing issues. Social support may mediate this risk. However, from a public health perspective, little is written about how ELoFTs access health information and support and the role of their social networks in facilitating health and wellbeing outcomes. This research was part of a study examining social network processes of Australian male ELoFTs travelling, living, or working in Southeast Asia (SEA). METHODS Symbolic Interactionism and Grounded Theory were the conceptual framework and methodology supporting semi-structured, in-depth interviews (n = 25) conducted in Australia and Thailand with Australian male ELoFTs to SEA, aged 18 years or older. RESULTS Findings highlight supports that assist ELoFT transition and adjustment to country of destination or manage their transnational experience. Influential places, people, and points in the migration journey mediated engagement with social support. CONCLUSIONS ELoFT social networks and the support provided within them may provide a mechanism for intervention across a range of public health issues. Findings may support the development of policy and practice across industries charged with supporting successful ELoFT adjustment.
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Affiliation(s)
- G Crawford
- Collaboration for Evidence, Research and Impact in Public Health, Curtin School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - R Lobo
- Collaboration for Evidence, Research and Impact in Public Health, Curtin School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - B Maycock
- College of Medicine & Health, University of Exeter, Devon, UK
| | - G Brown
- Collaboration for Evidence, Research and Impact in Public Health, Curtin School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
- Centre for Social Impact, UNSW Sydney, Sydney, New South Wales, Australia
- Australian Research Centre in Sex, Health and Society, La Trobe University, Bundoora Victoria, Australia
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Mili A, Das S, Nandakumar K, Lobo R. Molecular docking and dynamics guided approach to identify potential anti-inflammatory molecules as NRF2 activator to protect against drug-induced liver injury (DILI): a computational study. J Biomol Struct Dyn 2023; 41:9193-9210. [PMID: 36326112 DOI: 10.1080/07391102.2022.2141885] [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: 06/28/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
Abstract
Inflammation and oxidative stress can contribute to the etiology of metabolic and chronic illnesses. The ability to prevent oxidative stress induced diseases such as cancer, cardiovascular disease, Alzheimer's disease, and others has been the subject of global research. Drug-induced liver injury (DILI) pathogenesis can be either due to oxidative stress or inflammatory response elicited by the drug, its metabolite, or herbal supplements. Our present research uses computational studies to identify a molecule with anti-inflammatory properties that can operate as an NRF2 activator. Acquiring and preparing the KEAP1-NRF2 Protein (PDB: 4L7D) with Schrodinger Suite was followed by developing a ligand library (Anti-inflammatory library downloaded from ChemDiv database). Molecular docking studies were performed in HTVS, SP, and XP modes, respectively. Based on the docking score, interaction, ADMET and binding free energy, the top ten compounds were selected and subjected to induced-fit docking (IFD) analysis for further study. The top three molecules were chosen for a molecular dynamics (MD) simulation study. Using the Desmond module of the Schrodinger Suite, the stability of the protein-ligand complex and protein-ligand contact throughout 100ns were evaluated during the MD simulation study. In our study, it was observed that three compounds exhibit exceptional stability and retain the essential interaction throughout the studies, and it is anticipated that these compounds may act as effective NRF2 activators. Further in vitro and in vivo assessments can be conducted to determine its potential to prevent DILI via acting as an NRF2 activator for future drug development.
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Affiliation(s)
- Ajay Mili
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Subham Das
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
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Mili A, Birangal S, Nandakumar K, Lobo R. A computational study to identify Sesamol derivatives as NRF2 activator for protection against drug-induced liver injury (DILI). Mol Divers 2023:10.1007/s11030-023-10686-8. [PMID: 37392347 DOI: 10.1007/s11030-023-10686-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Drug-induced liver injury can be caused by any drugs, their metabolites, or natural products due to the inefficient functioning of drug-metabolizing enzymes, resulting in reactive oxygen species generation and leading to oxidative stress-induced cell death. For protection against oxidative stress, our cell has various defense mechanisms. One of the mechanisms is NRF2 pathway, when activated, protects the cell against oxidative stress. Natural antioxidants such as Sesamol have reported pharmacological activity (hepatoprotective & cardioprotective) and signaling pathways (NRF2 & CREM) altering potential. A Computational analysis was done using molecular docking, IFD, ADMET, MM-GBSA, and Molecular dynamic simulation of the Schrödinger suite. A total of 63,345 Sesamol derivatives were downloaded for the PubChem database. The protein structure of KEAP1-NRF2 (PDB: 4L7D) was downloaded from the RCSB protein database. The molecular docking technique was used to screen compounds that can form an interaction similar to the co-crystalized ligand (1VX). Based on MM-GBSA, docking score, and interactions, ten compounds were selected for ADMET profiling and IFD. After IFD, five compounds (66867225, 46148111, 12444939, 123892179, & 94817569) were selected for molecular dynamics simulation (MDS). Protein-ligand complex stability was assessed during MDS. The selected compounds (66867225, 46148111, 12444939, 123892179, & 94817569) complex with KEAP1 protein shows good stability and bond retentions. In our study, we observed that the selected compounds show good interaction, PCA, Rg, binding free energy, and ADMET profile. We can conclude that the selected compounds can act as NRF2 activators, which should be validated using proper in-vivo/in-vitro models.
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Affiliation(s)
- Ajay Mili
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Sumit Birangal
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Sanghavi AD, Chopra A, Shah A, Lobo R, Shenoy PA. Antimicrobial, anti-adhesion, anti-biofilm properties of goji berry ( Lycium barbarum) against periodontal bacteria: potential benefits for periodontal diseases. J Complement Integr Med 2023; 20:129-136. [PMID: 36398568 DOI: 10.1515/jcim-2022-0214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVES Lycium barbarum, commonly known as goji berry, Himalayan berry, or Tibetian berry, is emerging as a popular "superfood" with anti-inflammatory and antioxidant properties. However, its use for the management of oral inflammatory diseases has not been explored. The present study aims to evaluate the antimicrobial, anti-adhesion, anti-biofilm, and cytotoxic properties of an ethanolic extract of L. barbarum (LBE) against common oral and periodontal pathogens. METHODS The antimicrobial properties of LBE against five potential periodontal pathogens (Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Prevotella intermedia, Tanerella forsythia) were tested and compared to chlorhexidine and doxycycline using serial dilution and disc diffusion assay. The MTT Assay was performed for evaluating the cytotoxicity and cell viability of the LBE on the gingival fibroblast and modified keratinocyte cell lines. The anti-adhesion and anti-biofilm properties of LBE against P. gingivalis at its minimal bactericidal value were also assessed. RESULTS LBE inhibited the growth of periodontal pathogens as compared to control, however, the zone of inhibition of LBE was less when compared to doxycycline and chlorhexidine. The de novo extract showed a maximum zone of inhibition against Tf and Aa. The LBE extract was also compatible to gingival fibroblast tissues and oral keratinocytes at 1 mg/mL. CONCLUSIONS L. barbarum is a promising alternative to Chlorhexidine for the management of oral and periodontal infections.
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Affiliation(s)
- Amee Dilip Sanghavi
- Department of Periodontology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aditi Chopra
- Department of Periodontology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ashmeet Shah
- Department of Periodontology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Padmaja A Shenoy
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Pena-Bermudez YA, Vincenzi R, Meo-Filho P, Sakamoto LS, Lobo R, Benetel G, Lobo A, Matos C, Benetel V, Lima CG, Berndt A, Cardenas LM, Bueno ICS. Effect of Yerba Mate Extract as Feed Additive on Ruminal Fermentation and Methane Emissions in Beef Cattle. Animals (Basel) 2022; 12:2997. [PMID: 36359122 PMCID: PMC9658154 DOI: 10.3390/ani12212997] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 09/19/2023] Open
Abstract
The inclusion of plant extracts that contain secondary compounds with the potential to modulate rumen fermentation and improve animal performance has gained attention in recent years. The aim of this study was to evaluate the effect of the inclusion of yerba mate extract (Ilex paraguariensis ST. Hilaire) (YME) on the ruminal parameters. Eight castrated cattle were divided into four groups, a control without YME (0%) and three treatment groups with 0.5, 1 and 2% inclusion of YME in the dry matter. The inclusion of YME did not show differences in ruminal methane emissions (CH4), and total apparent digestibility (p = 0.54). Likewise, YME did not modify ruminal pH, but positively affected NH3-N, which decreased linearly as the extract level in the diet increased (p = 0.01). No short chain fatty acids (SCFA) were influenced by YME, except isovaleric acid (p = 0.01), which showed a lower concentration in the inclusion of 2% YME. Our results show that up to 2% YME does not affect digestibility, ruminal fermentation parameters, or the concentration of short-chain fatty acids in the rumen.
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Affiliation(s)
- Yuli A. Pena-Bermudez
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Rafaela Vincenzi
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Paulo Meo-Filho
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
- Net Zero and Resilient Farming, Rothamsted Research–North Wyke. North Wyke, Okehampton, Devon EX20 2SB, UK
| | | | - Richard Lobo
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
- Department of Animal Science, Institute of Food and Agricultural Sciences, University of Florida, 2250 Shealy Dr, Gainesville, FL 32608, USA
| | - Gabriela Benetel
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Annelise Lobo
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Carol Matos
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Vanderlei Benetel
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Cesar G. Lima
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
| | - Alexandre Berndt
- Brazilian Agricultural Research Corporation (EMBRAPA), Embrapa–Southeast Livestock, São Carlos 13560-970, SP, Brazil
| | - Laura M. Cardenas
- Net Zero and Resilient Farming, Rothamsted Research–North Wyke. North Wyke, Okehampton, Devon EX20 2SB, UK
| | - Ives C. S. Bueno
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, SP, Brazil
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De Michieli L, Knott J, Attia Z, Ola O, Akula A, Mehta R, Dworak M, Lobo R, Hodge D, Tak T, Cagin C, Friedman P, Gulati R, Jaffe A, Sandoval Y. Artificial intelligence-enabled electrocardiographic algorithm for the detection of left ventricular dysfunction in emergency department patients undergoing high-sensitivity cardiac troponin T. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Artificial intelligence-augmented electrocardiogram (AI-ECG) algorithms have been developed from the standard 12-lead ECG and validated for the recognition of left ventricular systolic dysfunction (LVSD), defined as LV ejection fraction (LVEF)≤35%. Whether AI-ECG facilitates identification of LVSD and is associated with adverse outcomes in emergency department (ED) patients undergoing high-sensitivity cardiac troponin (hs-cTnT) testing is uncertain.
Purpose
To investigate the diagnostic and prognostic performance of AI-ECG in ED patients undergoing hs-cTnT measurement.
Methods
Observational US cohort study of ED patients undergoing hs-cTnT measurement. Cases with hs-cTnT increases >sex-specific 99th percentiles were adjudicated following the Fourth Universal Definition of Myocardial Infarction (MI). Post-discharge major adverse cardiac events (MACE) included death, MI, heart failure (HF) hospitalization, stroke or transient ischemic attack, and new onset atrial fibrillation/flutter during 2-years follow-up. The AI-ECG network output, which is a continuous number between 0–1, that provides a probability of LVSD, was obtained for each patient from the first ECG during the index presentation. An AI-ECG threshold of ≥0.256 indicates a positive screen that correlates with a high probability of LVSD.
Results
Among 1977 patients, 1729 (87%) had a negative AI-ECG screen, while 248 (13%) had a positive AI-ECG screen. Patients with a positive AI-ECG screen were older and had more comorbidities. As compared to patients with hs-cTnT≤99th percentile in whom AI-ECG was positive in 5.8%, those with hs-cTnT>99th percentile had a positive AI-ECG in 22% of cases (p<0.0001). Based on adjudicated diagnoses, the frequency of a positive AI-ECG was 20% in myocardial injury, 38% in type 1 MI, and 20% in type 2 MI. At 2-years follow-up, as compared to patients with a negative AI-ECG, those with a positive AI-ECG had a higher risk for MACE (48% vs. 21%, p<0.0001, adjusted HR 1.39, 95% CI 1.11–1.75) (Figure 1), mainly because of more deaths (43% vs. 30%, p=0.004) and HF hospitalizations (36% vs. 13%, p<0.0001). A positive AI-ECG was associated with a higher risk for MACE (60% vs. 41%, p<0.0001, adjusted HR 1.30, 95% CI 1.02–1.64) in those with hs-cTnT increases >99th percentile, but not in those without hs-cTnT increases. Among patients with an echocardiogram during index presentation or within 30-days (n=452), the diagnostic accuracy of AI-ECG for LVEF ≤35% was 81.4% (95% CI 77.5, 84.9) with a negative predictive value of 96.5% (95% CI 94.0, 98.2). A normal LVEF (>50%) was observed in 87% of those with a negative AI ECG, whereas in those with a positive AI-ECG LVEF was reduced (<50%) in 60%.
Conclusions
Among ED patients evaluated with hs-cTnT, a positive AI-ECG screen for LVSD identifies patients at high risk of MACE. These findings are largely because of more deaths and HF hospitalizations in those with hs-cTnT increases >sex-specific 99th percentiles.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - J Knott
- Mayo Clinic , Rochester , United States of America
| | - Z Attia
- Mayo Clinic , Rochester , United States of America
| | - O Ola
- Franciscan Skemp Healthcare Mayo Health System , La Crosse , United States of America
| | - A Akula
- Franciscan Skemp Healthcare Mayo Health System , La Crosse , United States of America
| | - R Mehta
- Mayo Clinic , Rochester , United States of America
| | - M Dworak
- Franciscan Skemp Healthcare Mayo Health System , La Crosse , United States of America
| | - R Lobo
- Mayo Clinic , Rochester , United States of America
| | - D Hodge
- Mayo Clinic , Jacksonville , United States of America
| | - T Tak
- Franciscan Skemp Healthcare Mayo Health System , La Crosse , United States of America
| | - C Cagin
- Franciscan Skemp Healthcare Mayo Health System , La Crosse , United States of America
| | - P Friedman
- Mayo Clinic , Rochester , United States of America
| | - R Gulati
- Mayo Clinic , Rochester , United States of America
| | - A Jaffe
- Mayo Clinic , Rochester , United States of America
| | - Y Sandoval
- Mayo Clinic , Rochester , United States of America
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Kaur J, Sanghavi AD, Chopra A, Lobo R, Saha S. Antimicrobial and cytotoxicity properties of Plumeria alba flower extract against oral and periodontal pathogens: A comparative in vitro study. J Indian Soc Periodontol 2022; 26:334-341. [PMID: 35959306 PMCID: PMC9362818 DOI: 10.4103/jisp.jisp_329_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/17/2021] [Accepted: 10/10/2021] [Indexed: 11/13/2022] Open
Abstract
Context: Plumeria alba, commonly known as frangipani or West Indian jasmine, is a traditional and ancient folklore medicine known for its antimicrobial, anti-inflammatory, and antioxidant properties. The extracts from P. alba obtained from the leaves, bark, and flowers, are commonly used to manage bacterial, fungal, and viral infections such as herpes, scabies, and fungal infections. The constituents of the P. alba plant have shown promising antihelmintic, antipyretic, and antirheumatic properties. Although studies have confirmed that extracts from Plumeria species are effective against microbial infections and cancer, its role in managing oral diseases, particularly the chronic inflammatory disease of the gums (gingivitis and periodontitis), has never been explored. Therefore, the current study aimed to explore the antimicrobial and cytotoxic properties of the P. alba flower extract against oral and periodontal pathogens compared to chlorhexidine and doxycycline. Settings and Design: This was an in vitro study. Materials and Methods: The ethanolic extract was prepared from the freshly plucked P. alba flowers. The antimicrobial properties of the extract were evaluated by testing the minimal inhibitory concentration, minimal bactericidal concentration, and well-diffusion assay against Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Prevotella intermedia, Tannerella forsythia, Streptococcus mutans, Actinomyces viscosus, Streptococcus salivarius, and Candida albicans. The results were compared to chlorhexidine and doxycycline. The cytotoxicity was checked by the against human-derived gingival fibroblast and keratinocytes. Statistical Analysis Used: One-way ANOVA for the mean zones of inhibition against all the microorganisms was done. Results: P. alba extract inhibited the growth for all the tested oral and periodontal pathogens at 25 μg/ml. The well-diffusion assay of P. alba extract was comparable to chlorhexidine but was not statistically significant compared to doxycycline. Conclusion: P. alba can be used as a promising alternative to chlorhexidine for the management of oral and periodontal infections.
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Affiliation(s)
- Jaskirat Kaur
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Amee Dilip Sanghavi
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aditi Chopra
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Swagata Saha
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Ota Y, Moore AG, Spector ME, Casper K, Stucken C, Malloy K, Lobo R, Baba A, Srinivasan A. Prediction of Wound Failure in Patients with Head and Neck Cancer Treated with Free Flap Reconstruction: Utility of CT Perfusion and MR Perfusion in the Early Postoperative Period. AJNR Am J Neuroradiol 2022; 43:585-591. [PMID: 35361578 PMCID: PMC8993192 DOI: 10.3174/ajnr.a7458] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/08/2022] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Free flap reconstruction in patients with head and neck cancer carries a risk of postoperative complications, and radiologic predictive factors have been limited. The aim of this study was to assess the factors that predict free flap reconstruction failure using CT and MR perfusion. MATERIALS AND METHODS This single-center prospective study included 24 patients (mean age, 62.7 [SD, 9.0] years; 16 men) who had free flap reconstruction from January 2016 to May 2018. CT perfusion and dynamic contrast-enhanced MR imaging with conventional CT and MR imaging were performed between 2 and 4 days after the free flap surgery, and the wound assessments within 14 days after the surgery were conducted by the surgical team. The parameters of CT perfusion and dynamic contrast-enhanced MR imaging with conventional imaging findings and patient demographics were compared between the patients with successful free flap reconstruction and those with wound failure as appropriate. P < .05 was considered significant. RESULTS There were 19 patients with successful free flap reconstruction and no wound complications (mean age, 63.9 [SD, 9.5] years; 14 men), while 5 patients had wound failure (mean age, 58.0 [SD, 5.7] years; 2 men). Blood flow, blood volume, MTT, and time maximum intensity projection (P = .007, .007, .015, and .004, respectively) in CT perfusion, and fractional plasma volume, volume transfer constant, peak enhancement, and time to maximum enhancement (P = .006, .039, .004, and .04, respectively) in dynamic contrast-enhanced MR imaging were significantly different between the 2 groups. CONCLUSIONS CT perfusion and dynamic contrast-enhanced MR imaging are both promising imaging techniques to predict wound complications after head and neck free flap reconstruction.
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Affiliation(s)
- Y Ota
- From the Division of Neuroradiology (Y.O., R.L., A.B., A.S.)
| | - A G Moore
- Department of Radiology (A.G.M.), Western Michigan University, Kalamazoo, Michigan
| | - M E Spector
- Department of Radiology, and Department of Otolaryngology (M.E.S., K.C., C.S., K.M.), University of Michigan, Ann Arbor, Michigan
| | - K Casper
- Department of Radiology, and Department of Otolaryngology (M.E.S., K.C., C.S., K.M.), University of Michigan, Ann Arbor, Michigan
| | - C Stucken
- Department of Radiology, and Department of Otolaryngology (M.E.S., K.C., C.S., K.M.), University of Michigan, Ann Arbor, Michigan
| | - K Malloy
- Department of Radiology, and Department of Otolaryngology (M.E.S., K.C., C.S., K.M.), University of Michigan, Ann Arbor, Michigan
| | - R Lobo
- From the Division of Neuroradiology (Y.O., R.L., A.B., A.S.)
| | - A Baba
- From the Division of Neuroradiology (Y.O., R.L., A.B., A.S.)
| | - A Srinivasan
- From the Division of Neuroradiology (Y.O., R.L., A.B., A.S.)
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Sanghavi A, Srivatsa A, Adiga D, Chopra A, Lobo R, Kabekkodu SP, Gadag S, Nayak U, Sivaraman K, Shah A. Goji berry (Lycium barbarum) inhibits the proliferation, adhesion, and migration of oral cancer cells by inhibiting the ERK, AKT, and CyclinD cell signaling pathways: an in-vitro study. F1000Res 2022; 11:1563. [PMID: 36761830 PMCID: PMC9887205 DOI: 10.12688/f1000research.129250.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
Background: Lycium barbarum (L. barbarum), popularly referred to as Goji berry, is a promising herb known for its powerful anti-antioxidant, antibacterial, and anti-inflammatory properties. It is used in traditional Chinese medicine for treating inflammatory and infectious diseases. It has also shown good anti-cancer properties and has been tested against liver, colon, prostate, breast, and cervical cancers. However, no study has yet evaluated the role of goji berries against oral cancer. Hence, the present paper aims to evaluate the anticancer properties of L. barbarum against oral squamous cell carcinoma. Method: Ethanolic extract of L. barbarum (EELB) was tested for its anticancer properties by performing the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, colony formation, cell proliferation, and scratch wound test. The impact of EELB on the signaling transduction pathways of Extracellular signal-regulated kinase (ERK1/2), protein kinase (AKT1), cyclin D1 and epithelial-mesenchymal transition (EMT) was also assessed by western blot. Results: The results showed that EELB can impede CAL-27 cell growth, proliferation and migration in-vitro. It even reduced the phosphorylation of ERK1/2 and AKT1 with concomitant downregulation of cyclin D1 (CCND1), cadherin 2 (CDH2), and vimentin (VIM) and upregulation of cadherin 1 (CDH1) expression suggesting its anti-proliferative and anti-EMT effects in oral cancer. Conclusion: Goji berry has good antiproliferative and anti-invasive properties. It affects potential EMT markers and signaling transduction pathways involved in oral cancers. Hence goji berry can be tried as a potential anticancer agent to manage oral squamous cell carcinoma.
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Affiliation(s)
- Amee Sanghavi
- Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Ananth Srivatsa
- Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Divya Adiga
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Aditi Chopra
- Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Richard Lobo
- Manipal College of Pharmaceutical Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Shama Prasada Kabekkodu
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Shivaprasada Gadag
- Manipal College of Pharmaceutical Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Usha Nayak
- Manipal College of Pharmaceutical Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Karthik Sivaraman
- Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Ashmeet Shah
- Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
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Mili A, Das S, Nandakumar K, Lobo R. A comprehensive review on Sesamum indicum L.: Botanical, ethnopharmacological, phytochemical, and pharmacological aspects. J Ethnopharmacol 2021; 281:114503. [PMID: 34364969 DOI: 10.1016/j.jep.2021.114503] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/29/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sesamum indicum L. (Pedaliaceae) is an annual plant, which has been domesticated for well over 5000 years. It is widely cultivated for its seeds and is one of the oldest known oilseed crops. Traditionally, its seeds, seed oil, and different organs of the plant have been used to treat various diseases or conditions like ulcers, asthma, wound healing, amenorrhea, hemorrhoids, inflammations, etc. AIM OF THE REVIEW: The main aim of this review is to provide an outline and to assess the reported ethnopharmacological, phytochemical, pharmacological and toxicological studies of Sesamum indicum L. MATERIALS AND METHODS An extensive literature survey was done on various search engines like PubMed, Web of Science, Scopus, SciFinder, Google Scholar, Science direct, etc. Other literature sources like Wikipedia, Ethnobotanical books, Chapters were also studied to get maximum information possible on the Sesamum indicum L. RESULTS Over 160 different phytochemical compounds have been characterized and isolated from seeds, seed oil, and various plant organs, including lignans, polyphenols, phytosterols, phenols, anthraquinones, naphthoquinones, triterpenes, cerebroside, fatty acids, vitamins, proteins, essential amino acids, and sugars using suitable analytical techniques (e.g., LC-MS, GC-MS, HPTLC, HPLC). All the reported pharmacological activities like antioxidant, anticancer, antipyretic, antihypertensive, hepatoprotective, and anti-inflammatory are due to the virtue of these phytochemical compounds. CONCLUSION This review mainly highlights the botanical aspect of Sesamum indicum and its phytochemical constituents, ethnomedicinal uses, different pharmacological activities followed by ongoing clinical trials and future prospects. Sesamum indicum has great importance in traditional Indian medicine, which is further supported by modern pharmacological studies, especially in hepatoprotection, inflammation, and cancer. Several researchers have suggested that Sesamum indicum extracts and isolated compounds could have a wide therapeutic potency range. More research is needed to uncover key features of Sesamum indicum in medical practice, such as structure-activity relationships, toxicity, and therapeutic potential. In order to fully explore the plant's potential, safety assessments and implementation of an integrated cultivation method are also areas that need to investigate.
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Affiliation(s)
- Ajay Mili
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Subham Das
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Reburiano R, Presas-Gregorio A, Lobo R. M150 FAMILIAL MEDITERRANEAN FEVER IN A 6-YEAR-OLD FILIPINO CHILD: A CASE REPORT 9052. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.291] [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: 11/26/2022]
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Horter S, Daftary A, Keam T, Bernays S, Bhanushali K, Chavan D, Denholm J, Furin J, Jaramillo E, Khan A, Lin YD, Lobo R, Loveday M, Majumdar SS, Mistry N, Patel H, Rane S, Swaminathan A, Triasih R, Venkatesan N, Viney K, du Cros P. Person-centred care in TB. Int J Tuberc Lung Dis 2021; 25:784-787. [PMID: 34615573 DOI: 10.5588/ijtld.21.0327] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- S Horter
- Burnet Institute, Melbourne, VIC, Australia
| | - A Daftary
- Dahdaleh Institute of Global Health Research, York University, Toronto, ON, Canada, Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - T Keam
- Burnet Institute, Melbourne, VIC, Australia
| | - S Bernays
- School of Public Health, University of Sydney, Sydney, NSW, Australia, Department of Global Health and Development, London School of Hygiene & Tropical Medicine, London, UK
| | | | - D Chavan
- Survivors Against TB, Mumbai, India
| | - J Denholm
- Victorian Tuberculosis Program, Melbourne Health, Melbourne, VIC, Australia, Department of Microbiology and Immunology, University of Melbourne, Melbourne, VIC, Australia
| | - J Furin
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
| | - E Jaramillo
- Global TB Programme, World Health Organization, Geneva, Switzerland
| | - A Khan
- Stop TB Partnership, Geneva, Switzerland
| | - Y D Lin
- Burnet Institute, Melbourne, VIC, Australia
| | | | - M Loveday
- HIV Prevention Research Unit, South African Medical Research Council, Durban, South Africa
| | - S S Majumdar
- Burnet Institute, Melbourne, VIC, Australia, Department of Paediatrics, University of Melbourne and Murdoch Children´s Research Institute, Melbourne, VIC, Australia
| | - N Mistry
- Foundation for Medical Research, Mumbai, India
| | - H Patel
- Survivors Against TB, Mumbai, India
| | - S Rane
- Survivors Against TB, Mumbai, India
| | | | - R Triasih
- Centre for Tropical Medicine, Universitas Gadjah Mada, Yogyakarta, Department of Paediatric, Dr Sardjito Hospital/Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - N Venkatesan
- Blavatnik School of Government, Oxford University, Oxford, UK
| | - K Viney
- Global TB Programme, World Health Organization, Geneva, Switzerland
| | - P du Cros
- Burnet Institute, Melbourne, VIC, Australia
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Shah A, Shah AA, Nandakumar K, Kumar A, Pai A, Lobo R. In-silico and in-vivo evaluation of sesamol and its derivatives for benign prostatic hypertrophy. 3 Biotech 2021; 11:411. [PMID: 34466348 PMCID: PMC8364611 DOI: 10.1007/s13205-021-02952-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/28/2021] [Indexed: 11/12/2022] Open
Abstract
Pharmacological treatment for BPH includes 5-α reductase inhibitors as Finasteride and Dutasteride as a monotherapy or in combination with antimuscarinic drugs, alpha-blockers, 5-phosphodiesterase inhibitor drugs. Androgen receptor inhibitors revealed several adverse events as decreased libido, erectile dysfunction, ejaculatory dysfunction, and gynecomastia. Hence, the emergence of complementary and alternative medications having safety profile—preferably, edible natural products—would be highly desirable. In-silico studies based on Maestro Molecular Modelling platform (version 10.5) by Schrӧdinger, LLC was used to identify the lead molecules. The in-vivo activity studied on rats gave the positive results. The findings based on experiments as antioxidant parameters showed the potential to quench the free radicals. The significant results were also seen in prostatic index and histopathological studies supported the above findings. Based on these data, sesamol and derivative have proven efficacy in protecting against testosterone induced BPH.
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Shah A, Shah AA, K N, Lobo R. Mechanistic targets for BPH and prostate cancer-a review. Rev Environ Health 2021; 36:261-270. [PMID: 32960781 DOI: 10.1515/reveh-2020-0051] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 09/02/2020] [Indexed: 05/26/2023]
Abstract
All men, almost, suffer from prostatic disorders in average life expectancy. In the year of 1950s, the first autopsy of prostate gland discovered the link between Benign prostatic hyperplasia (BPH) and Prostate Cancer (PCa). After that, many histology, biochemistry, epidemiology studies explained the association and associated risk factor for the same. From the various scientific evidence, it is proved that both diseases share some common transcription factors and signalling pathways. Still, BPH cannot be considered as the first step of PCa progression. To define, the relationship between both of the diseases, a well-defined large epidemiological study is needed. Along with androgen signalling, imbalanced apoptosis, oxidative stress, and microbial infection also crucial factors that significantly affect the pathogenesis of BPH. Various signalling pathways are involved in the progression of BPH. Androgen signalling is the driving force for the progress of PCa. In PCa androgen signalling is upregulated as compared to a healthy prostate. Some dominant Androgen-regulated genes and their functions have been discussed in this work.
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Affiliation(s)
- Abhishek Shah
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aarti Abhishek Shah
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Nandakumar K
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Ramadan S, Lobo R, Zhang Y, Xu L, Shaforost O, Kwong Hong Tsang D, Feng J, Yin T, Qiao M, Rajeshirke A, Jiao LR, Petrov PK, Dunlop IE, Titirici MM, Klein N. Carbon-Dot-Enhanced Graphene Field-Effect Transistors for Ultrasensitive Detection of Exosomes. ACS Appl Mater Interfaces 2021; 13:7854-7864. [PMID: 33560115 DOI: 10.1021/acsami.0c18293] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Graphene field-effect transistors (GFETs) are suitable building blocks for high-performance electrical biosensors, because graphene inherently exhibits a strong response to charged biomolecules on its surface. However, achieving ultralow limit-of-detection (LoD) is limited by sensor response time and screening effect. Herein, we demonstrate that the detection limit of GFET biosensors can be improved significantly by decorating the uncovered graphene sensor area with carbon dots (CDs). The developed CDs-GFET biosensors used for exosome detection exhibited higher sensitivity, faster response, and three orders of magnitude improvements in the LoD compared with nondecorated GFET biosensors. A LoD down to 100 particles/μL was achieved with CDs-GFET sensor for exosome detection with the capability for further improvements. The results were further supported by atomic force microscopy (AFM) and fluorescent microscopy measurements. The high-performance CDs-GFET biosensors will aid the development of an ultrahigh sensitivity biosensing platform based on graphene for rapid and early diagnosis of diseases.
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Affiliation(s)
- Sami Ramadan
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Richard Lobo
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Yuanzhou Zhang
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Lizhou Xu
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Olena Shaforost
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | | | - Jingyu Feng
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Tianyi Yin
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Mo Qiao
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Anvesh Rajeshirke
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Long R Jiao
- Department of Hepatobiliary Surgery, Division of Surgery & Cancer, Imperial College London, Hammersmith Hospital, Campus, Du Cane Road, London W12 0NN, United Kingdom
| | - Peter K Petrov
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Iain E Dunlop
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Maria-Magdalena Titirici
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Norbert Klein
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
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Lobo R, White R, Donato L, Cha Y, Melduni R, Jaffe A. The shocking lack of significant increases in high sensitivity troponin values after cardioversion. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and introduction
Cardioversion is commonly used to terminate cardiac arrhythmias. Some previous reports have suggested that cardioversion results in myocardial injury as evidenced by increased levels of cardiac troponin. However, many of these studies were done years ago with less sensitive troponin assays and monophasic waveform defibrillators.
Purpose
To determine if external direct current (DC) cardioversion with biphasic rectilinear waveform shocks results in myocardial injury as assessed by high sensitivity cardiac troponin T (hs-cTnT) and I (hs-cTnI).
Methods
Patients scheduled for elective DC cardioversion for atrial fibrillation or atrial flutter were recruited. Plasma samples for measurement of hs-cTnT and hs-cTnI were obtained pre-cardioversion and as late as feasible but at least 6 hours post-cardioversion [median of 9 (7–11) hours].
Results
A total of 96 patients were recruited. One patient was excluded because the pre-cardioversion sample was hemolysed. Median (25th–75th interquartile range) cumulative energy delivered was 121.6J (62.4–277.4J) and median highest energy individual shock was 121.0J (62.1–146.2J). A total of 39 (41.1%) patients received more than 1 shock, 23 (24.2%) patients received a cumulative energy of 300J or higher and 5 (5.3%) patients received a cumulative energy of 1,000J or more. The median pre-cardioversion hs-cTnT value was 11.48 (7.19–18.38) ng/L and the median hs-cTnI value was 5.1 (2.0–9.4) ng/L. Median post-cardioversion hs-cTnT value were 12.46 (7.98–20.28) ng/L and hs-cTnI value were 6.3 (3.5–10.0) ng/L. Wilcoxon-Signed ranks test showed a statistically significant change between the pre-and-post cardioversion hs-cTnT values (Z=−4.237, p<0.001) and hs-cTnI values (Z=−4.822, p<0.001). In only 5 (hs-cTnT) and 4 patients (hs-cTnI) was there an increase of >5 ng/L. There were 5 cases where the post-cardioversion values of both hs-cTnT and hs-cTnI were above the 50% reference change value. There was no relation between the change in hs-cTn values and sex, number of shocks, total energy delivered (even in those who received more than 1,000J), highest energy per shock, total current delivered, highest current delivered per shock or transthoracic impedance.
Conclusion(s)
There is a statistically significant but very small change in median hs-cTnT and hs-cTnI values (1 ng/L and 1.2 ng/L respectively) after DC cardioversion. The results were similar even in patients where high energy shocks were delivered and did not vary based on the pre cardioversion baseline value. Patients who have marked troponin elevations after cardioversion should be assessed for other causes of myocardial injury. It should not be assumed that they have myocardial injury from the cardioversion alone.
Figure 1
Funding Acknowledgement
Type of funding source: Other. Main funding source(s): Dr. Allan Jaffe has substantial research funds from both grants and private industry. Funds were used to pay for blood sample collection and analysis of high sensitivity cardiac troponin T at Mayo Clinic. Abbott Laboratories donated reagents for the high sensitivity cardiac troponin I analysis.
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Affiliation(s)
- R Lobo
- Mayo Clinic, Rochester, United States of America
| | - R.D White
- Mayo Clinic, Rochester, United States of America
| | - L.J Donato
- Mayo Clinic, Rochester, United States of America
| | - Y.M Cha
- Mayo Clinic, Rochester, United States of America
| | - R.M Melduni
- Mayo Clinic, Rochester, United States of America
| | - A.S Jaffe
- Mayo Clinic, Rochester, United States of America
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López Ramirez E, Martin L, Glaría L, Castro I, Molina R, Lobo R, Fernandez C, Krumina E, Esteban D, Domenech M, Moratino N, Cordon C, Diaz L. PO-1279: More intelligent workflow in a radiation oncology center with the implementation of LEAN thinking. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01297-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Nayak N, Varghese J, Shetty S, Bhat V, Durgekar T, Lobo R, Nayak UY, U V. Evaluation of a mouthrinse containing guava leaf extract as part of comprehensive oral care regimen- a randomized placebo-controlled clinical trial. BMC Complement Altern Med 2019; 19:327. [PMID: 31752836 PMCID: PMC6873761 DOI: 10.1186/s12906-019-2745-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 11/04/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND The control of biofilm adherence on tooth surface has always been the keystone of periodontal therapeutic systems. However, prevalence of gingivitis suggest inadequacy of self-performed oral hygiene measures and need for adjunctive aid for mechanical plaque control. Oral rinses containing chlorhexidine, has been widely used however, with certain limitations. Herbal products have been used widely reflecting its action as alternative and complementary remedy. Hence, the purpose of the present study was to evaluate the antimicrobial and antioxidant efficacy of a Guava leaf extract based mouthrinse in patients with chronic generalized gingivitis as an adjunct to oral prophylaxis. METHODS Sixty subjects (n = 20) in compliance with the inclusion criteria were randomly assigned to one of the 3 study groups i.e. Group A- 0.15%Guava mouth rinse, Group B- 0.2% Chlorhexidine (CHX) mouth rinse, Group C- Distilled water (placebo). All the participants received professional oral prophylaxis and were dispensed with experimental mouth rinses and instructed to use for period of 30 days. Clinical parameters such as gingival index, plaque index along with microbial colony forming units using plaque samples and antioxidant levels in saliva were estimated at baseline, 30 and 90 days' time intervals. RESULTS All 3 groups showed gradual reduction in GI, PI and microbial counts. Considering the mean scores of recorded parameters at the scheduled time intervals, notable changes were observed between chlorhexidine and guava mouth rinse compared to placebo group. Although there was improvement in the antioxidant status in all study participants, yet there was no statistically significant difference observed. CONCLUSION Guava mouth rinse can be used as an empirical adjunct to professional oral prophylaxis owing to its multifactorial properties and favourable acceptance. However, long term studies need to be conducted to validate its use for an extended period of time. TRIAL REGISTRATION The clinical trial has been prospectively registered on 17th February 2017 by the Clinical Trials Registry-India (CTRI/2017/02/007898).
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Kumar N, Shrungeswara AH, Mallik SB, Biswas S, Mathew J, Nandakumar K, Mathew J, Lobo R. Pinocembrin-Enriched Fractions of Elytranthe parasitica (L.) Danser Modulates Apoptotic and MAPK Cellular Signaling in HepG2 Cells. Anticancer Agents Med Chem 2019; 18:1563-1572. [DOI: 10.2174/1871520618666180911112127] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/20/2018] [Accepted: 09/03/2018] [Indexed: 12/22/2022]
Abstract
Background:
Hepatocellular carcinoma (HCC) is the fifth leading cause of cáncer mortality. Elytranthe
parasitica (L.) Danser (EP), a hemiparasitic plant (Loranthaceae) has potent anti-cancer properties.
Objective:
In the study, we investigated the effect of EP fractions on the expression of apoptosis and mitogenactivated
protein kinase (MAPK) markers deregulated in HCC. Bioactivity fractionation was performed to isolate the
phytochemical(s) exerting anti-tumor activity in HepG2 cells.
Method:
Anti-proliferative, clonogenic and anti-metastatic effects of EP fractions were examined in hepatocellular
carcinoma cell line, HepG2 by Sulphorhodamine B, colony formation and scratch wound assays respectively in
hepatocellular cell line, HepG2. The effects of EP fractions on key markers of apoptosis and MAPK signaling pathways
were explored.
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Key findings: EP bioactive fractions showed significant anti-tumor potential, reduced clonogenicity and considerably
inhibited cell migration in HepG2 cells in vitro. The fractions augmented annexin V binding and induced apoptosis
by causing cell cycle arrest at G2/M and S phase checkpoints. The fractions increased expression levels of p53, bad,
cleaved PARP (Poly ADP ribose polymerase) and cleaved Caspase-3. Expression levels of phosphorylated ERK1/2
(Extracellular signal-regulated kinase) were downregulated. Pinocembrin-7-O-ß-D-glucoside and chrysin were isolated
and characterized for the first time from Elytranthe parasitica (L.) Danser.
Conclusion:
Our findings reveal that EP fractions induced cell cycle arrest and triggered apoptosis in HepG2 cells by
upregulating apoptosis and deactivating MAPK pathway. It signifies that pinocembrin glycoside and chrysin are
bioactive phytochemicals contributing to the potent anti-hepatocarcinoma effects on HepG2 cells. Hence, bioactive
EP fractions could be used as a therapeutic agent for effective HCC therapy.
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Affiliation(s)
- Nimmy Kumar
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Akhila H. Shrungeswara
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Sanchari B. Mallik
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Subhankar Biswas
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Jesil Mathew
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
| | - Jessy Mathew
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Karnataka 576104, India
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Jitta SR, Daram P, Gourishetti K, Misra CS, Polu PR, Shah A, Shreedhara CS, Nampoothiri M, Lobo R. Terminalia tomentosa Bark Ameliorates Inflammation and Arthritis in Carrageenan Induced Inflammatory Model and Freund's Adjuvant-Induced Arthritis Model in Rats. J Toxicol 2019; 2019:7898914. [PMID: 30774656 PMCID: PMC6354132 DOI: 10.1155/2019/7898914] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 11/16/2018] [Accepted: 12/10/2018] [Indexed: 12/28/2022] Open
Abstract
Terminalia tomentosa bark belongs to the family Combretaceae. The plant bark is astringent and useful in the treatment of ulcers, vata, fractures, hemorrhages, bronchitis, and diarrhea. Phytochemical investigation of T. tomentosa bark confirms the presence of flavonoids, polyphenols, and tannins. The plant has not been investigated for its anti-inflammatory and antiarthritic activity. The present study was undertaken to explore its possible anti-inflammatory and antiarthritic activity. Anti-inflammatory activity of alcoholic and aqueous extracts of the bark was assessed by in vivo methods. In vivo antiarthritic potential of the extracts was evaluated by Complete Freund's Adjuvant (CFA) induced arthritis in Wistar rats. Our findings showed that the alcoholic and aqueous extracts exhibited anti-inflammatory activity at 500 mg/kg oral dose in carrageenan-induced hind paw edema and carrageenan-induced air pouch inflammation models. We also found alcoholic as well as aqueous extracts of the bark restored the altered blood and serum parameters caused by the Complete Freund's Adjuvant-induced arthritis in Wistar rats. This study shows that the T. tomentosa bark extracts possess anti-inflammatory activity and have pronounced effects on adjuvant arthritis also. Future studies are necessary to provide deeper insight into the exact mechanism of the action of anti-inflammatory and antiarthritic activity of T. tomentosa.
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Affiliation(s)
- Srinivasa Reddy Jitta
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Prasanthi Daram
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Karthik Gourishetti
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - C. S. Misra
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Picheswara Rao Polu
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Abhishek Shah
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - C. S. Shreedhara
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
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Amuthan A, Devi V, Shreedhara CS, Rao V, Lobo R. Cytoprotective Activity of Neichitti (Vernonia cinerea) in Human Embryonic Kidney (HEK293) Normal Cells and Human Cervix Epitheloid Carcinoma (HeLa) Cells against Cisplatin Induced Toxicity: A Comparative Study. J Clin Diagn Res 2019. [DOI: 10.7860/jcdr/2019/40242.12624] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- Richard Lobo
- Manipal College of Pharmaceutical Sciences, Manipal University, Karnataka, India
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Shearer J, Gray C, Crawford G, Lobo R. 5.5-O8HIV and mobility in Australia: creating a coalition and a road map for action. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Shearer
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - C Gray
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - G Crawford
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - R Lobo
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
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Gray C, Crawford G, Lobo R, Shearer J, Narciso L, Oudih E, Gunaratnam P, Thorpe R. 6.5-O7General practitioner experiences of testing people born in sub-Saharan Africa and South East Asia for HIV in Australia. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Gray
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - G Crawford
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - R Lobo
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | - J Shearer
- Collaboration for Evidence, Research and Impact in Public Health, Curtin University, Australia
| | | | - E Oudih
- Relationships Australia SA, Australia
| | - P Gunaratnam
- Kirby Institute, University of New South Wales, Australia
| | - R Thorpe
- Australian Research Centre in Sex, Health and Society, La Trobe University, Australia
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Shearer J, Gray C, Crawford G, Lobo R, Reid A. 4.10-P22HIV knowledge and use of health services among people born in sub-Saharan Africa and South East Asia living in Perth, Western Australia. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky048.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - C Gray
- Curtin University, Australia
| | | | - R Lobo
- Curtin University, Australia
| | - A Reid
- Curtin University, Australia
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Gray C, Crawford G, Lobo R, Shearer J, Narciso L, Oudih E, Gunaratnam P, Thorpe R. 4.10-P23Barriers and enablers to HIV testing among people born in sub-Saharan Africa and South East Asia living in Australia. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky048.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Gray
- Curtin University, Australia
| | | | - R Lobo
- Curtin University, Australia
| | | | | | - E Oudih
- Relationships Australia SA, Australia
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Muddukrishna BS, Pai V, Lobo R, Pai A. Application of two-dimensional binary fingerprinting methods for the design of selective Tankyrase I inhibitors. Mol Divers 2017; 22:359-381. [PMID: 29168093 DOI: 10.1007/s11030-017-9793-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 10/24/2017] [Indexed: 12/11/2022]
Abstract
In the present study, five important binary fingerprinting techniques were used to model novel flavones for the selective inhibition of Tankyrase I. From the fingerprints used: the fingerprint atom pairs resulted in a statistically significant 2D QSAR model using a kernel-based partial least square regression method. This model indicates that the presence of electron-donating groups positively contributes to activity, whereas the presence of electron withdrawing groups negatively contributes to activity. This model could be used to develop more potent as well as selective analogues for the inhibition of Tankyrase I. Schematic representation of 2D QSAR work flow.
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Affiliation(s)
- B S Muddukrishna
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences (MCOPS), Manipal University, Manipal, Karnataka, India
| | - Vasudev Pai
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences (MCOPS), Manipal University, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences (MCOPS), Manipal University, Manipal, Karnataka, India
| | - Aravinda Pai
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences (MCOPS), Manipal University, Manipal, Karnataka, 576 104, India.
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Maheshwari R, Shreedhara CS, Polu PR, Managuli RS, Xavier SK, Lobo R, Setty M, Mutalik S. Characterization of the Phenolic Compound, Gallic Acid from Sansevieria roxburghiana Schult and Schult. f. Rhizomes and Antioxidant and Cytotoxic Activities Evaluation. Pharmacogn Mag 2017; 13:S693-S699. [PMID: 29142435 PMCID: PMC5669118 DOI: 10.4103/pm.pm_497_16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/07/2016] [Indexed: 01/15/2023] Open
Abstract
Background: Sansevieria roxburghiana Schult. and Schult. f. (Asparagaceae) grows in India, Indonesia, Sri Lanka, and tropical Africa. Even though the plant has been traditionally used for the treatment of many ailments, the antioxidant and antiproliferative activities of S. roxburghiana methanol extract and its fractions have not yet been explored. Materials and Methods: Quantitative estimation of phenols and different antioxidant assays were performed using standard methods. Anti-proliferative effect of the extract and fractions were evaluated in HCT-116, HeLa, MCF-7, HepG2, and A-549 cancer cell lines by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and sulforhodamine B (SRB) assay methods. High-performance liquid chromatography (HPLC) and high-performance thin layer chromatography (HPTLC) fingerprint profiling were carried out for extract and different fractions. Results: Significant antioxidant and anti-proliferate activity were detected in ethyl acetate fraction. Ethyl acetate fraction showed prominent scavenging activity in 1,1-diphenyl-2-picrylhydrazyl, 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, and nitric oxide antioxidant assays with an concentration yielding 50% inhibition (IC50) 15.33 ± 1.45, 45.3 ± 1.93 and 48.43 ± 0.46 mg/ml, respectively. Cytotoxicity of ethyl acetate fraction was the highest among other fractions against HCT-116, HeLa, and MCF-7cancer cell lines with IC50 values 16.55 ± 1.28, 12.38 ± 1.36, and 8.03 ± 1.9 μg/ml, respectively, by MTT assay and 15.57 ± 0.70, 13.19 ± 0.49, and 10.34 ± 0.9 μg/ml, respectively, by SRB assay. The presence of gallic acid in the ethyl acetate fraction of S. roxburghiana rhizomes was confirmed by HPLC and HPTLC analysis. Conclusion: Results suggested that ethyl acetate fraction exhibited effective antioxidant and antiproliferative activities. The phenolic compounds identified in ethyl acetate fraction could be responsible for the activities. SUMMARY Sansevieria roxburghiana has been selected for in vitro antioxidant and cytotoxicity screening Ethyl acetate fraction of methanol extract of S. roxburghiana exhibited effective antioxidant and antiproliferative activities The activity of ethyl acetate fraction may be due to the presence of phenolic compound which is identified by high-performance liquid chromatography and high-performance thin layer chromatography techniques.
Abbreviations used: %: Percent, ºC: Celsius, mg: Microgram, ml-Microlitre, ANOVA: Analysis of variance, DMSO: Dimethyl sulfoxide, g: Grams, IC50: Concentration yielding 50% inhibition, Kg: Kilogram, mg: Milligram, min: Minutes, ml: Milliliter, HPLC: High-performance liquid chromatography, HPTLC: High-performance thin layer chromatography, DPPH: 1,1-diphenyl-2-picrylhydrazyl, ABTS: 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, GAE: Gallic acid equivalents, SRME: Methanol extract of S. roxburghiana, ROS: Reactive oxygen species, SRPE: Petroleum ether fraction of S. roxburghiana, SREA: Ethyl acetate fraction of S. roxburghiana, SRAQ: Aqueous fraction of S. roxburghiana, DMEM: Dulbecco's Minimum Essential Medium, FBS: Fetal bovine serum, OD: Optical density, TPC: Total phenolic content, SRBU: Butanol fraction of S. roxburghiana.
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Affiliation(s)
- Rajalekshmi Maheshwari
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | | | - Picheswara Rao Polu
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Renuka Suresh Managuli
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Seena Kanniparambil Xavier
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Manjunath Setty
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
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Fischer C, Prosser R, Engelstad K, Lobo R, Sauer M, Egli D. Toward clinical use of mitochondrial replacement therapy. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.468] [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: 11/24/2022]
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Safier L, Zuccaro M, Lobo R, Egli D. Gene editing in haploid human embryonic stem cells using CRISPR/Cas9. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.086] [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: 11/16/2022]
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Palmerola K, Rudick B, Lobo R. Low estradiol responses in oocyte donors do not influence in vitro fertilization cycle outcomes. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pattni I, Lobo R. P47 A pilot study to inform, test and treat people from non-english speaking backgrounds living with chronic hepatitis in Western Australia. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30788-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Arshad Q, Roberts RE, Ahmad H, Lobo R, Patel M, Ham T, Sharp DJ, Seemungal BM. Patients with chronic dizziness following traumatic head injury typically have multiple diagnoses involving combined peripheral and central vestibular dysfunction. Clin Neurol Neurosurg 2017; 155:17-19. [PMID: 28212927 DOI: 10.1016/j.clineuro.2017.01.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 01/27/2017] [Accepted: 01/31/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We hypothesised that chronic vestibular symptoms (CVS) of imbalance and dizziness post-traumatic head injury (THI) may relate to: (i) the occurrence of multiple simultaneous vestibular diagnoses including both peripheral and central vestibular dysfunction in individual patients increasing the chance of missed diagnoses and suboptimal treatment; (ii) an impaired response to vestibular rehabilitation since the central mechanisms that mediate rehabilitation related brain plasticity may themselves be disrupted. METHODS We report the results of a retrospective analysis of both the comprehensive clinical and vestibular laboratory testing of 20 consecutive THI patients with prominent and persisting vestibular symptoms still present at least 6months post THI. RESULTS Individual THI patients typically had multiple vestibular diagnoses and unique to this group of vestibular patients, often displayed both peripheral and central vestibular dysfunction. Despite expert neuro-otological management, at two years 20% of patients still had persisting vestibular symptoms. CONCLUSION In summary, chronic vestibular dysfunction in THI could relate to: (i) the presence of multiple vestibular diagnoses, increasing the risk of 'missed' vestibular diagnoses leading to persisting symptoms; (ii) the impact of brain trauma which may impair brain plasticity mediated repair mechanisms. Apart from alerting physicians to the potential for multiple vestibular diagnoses in THI, future work to identify the specific deficits in brain function mediating poor recovery from post-THI vestibular dysfunction could provide the rationale for developing new therapy for head injury patients whose vestibular symptoms are resistant to treatment.
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Affiliation(s)
- Q Arshad
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK
| | - R E Roberts
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK
| | - H Ahmad
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK
| | - R Lobo
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK
| | - M Patel
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK
| | - T Ham
- The Computational, Cognitive and Clinical Neuroimaging Laboratory, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
| | - D J Sharp
- The Computational, Cognitive and Clinical Neuroimaging Laboratory, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
| | - B M Seemungal
- Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College, Fulham Palace Road, London, W6 8RF, UK.
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Reilly T, Crawford G, Lobo R, Leavy J, Jancey J. Ethics and health promotion practice: exploring attitudes and practices in Western Australian health organisations. Health Promot J Austr 2017; 27:54-60. [PMID: 27041127 DOI: 10.1071/he15059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 02/12/2016] [Indexed: 11/23/2022] Open
Abstract
Issue addressed Evidence-informed practice underpinned by ethics is fundamental to developing the science of health promotion. Knowledge and application of ethical principles are competencies required for health promotion practice. However, these competencies are often inconsistently understood and applied. This research explored attitudes, practices, enablers and barriers related to ethics in practice in Western Australian health organisations. Methods Semistructured, in-depth interviews were conducted with 10 health promotion practitioners, purposefully selected to provide a cross-section of government and non-government organisations. Interviews were recorded, transcribed and then themed. Results The majority of participants reported consideration of ethics in their practice; however, only half reported seeking Human Research Ethics Committee (HREC) approval for projects in the past 12 months. Enablers identified as supporting ethics in practice and disseminating findings included: support preparing ethics applications; resources and training about ethical practice; ability to access HRECs for ethics approval; and a supportive organisational culture. Barriers included: limited time; insufficient resourcing and capacity; ethics approval not seen as part of core business; and concerns about academic writing. Conclusion The majority of participants were aware of the importance of ethics in practice and the dissemination of findings. However, participants reported barriers to engaging in formal ethics processes and to publishing findings. So what? Alignment of evidence-informed and ethics-based practice is critical. Resources and information about ethics may be required to support practice and encourage dissemination of findings, including in the peer-reviewed literature. Investigating the role of community-based ethics boards may be valuable to bridging the ethics-evidence gap.
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Affiliation(s)
- T Reilly
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, WA 6845, Australia
| | - G Crawford
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, WA 6845, Australia
| | - R Lobo
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, WA 6845, Australia
| | - J Leavy
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, WA 6845, Australia
| | - J Jancey
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, WA 6845, Australia
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Kumar N, Biswas S, Mathew AE, Varghese S, Mathew JE, Nandakumar K, Aranjani JM, Lobo R. Pro-apoptotic and cytotoxic effects of enriched fraction of Elytranthe parasitica (L.) Danser against HepG2 Hepatocellular carcinoma. BMC Complement Altern Med 2016; 16:420. [PMID: 27782823 PMCID: PMC5080845 DOI: 10.1186/s12906-016-1395-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 10/13/2016] [Indexed: 02/07/2023]
Abstract
Background Hepatocellular carcinoma (HCC), the most common type of liver cancer accounts for more than one million deaths worldwide. Current treatment modality for HCC is marginally effective. Plants belonging to Mistletoe family (Loranthaceae) have been used in chemotherapy for many years. The present study was aimed at exploring the anti-proliferative, pro-oxidant and pro-apoptotic potential of stem of Elytranthe parasitica (L.) Danser (EP), a parasitic shrub belonging to Loranthaceae. Methods Elytranthe parasitica (L.) Danser, a climbing parasitic shrub was investigated for its cytotoxic activity against HepG2, a hepatocellular carcinoma cell line by Sulforhodamine B (SRB) assay. Further, pro-oxidant activity of EP extract/fractions was studied using copper phenanthroline assay. To understand the mechanism of cell death, the pro-apoptotic effects of Hep-G2 cells treated with EP extract/fractions were visualized by dual staining using acridine orange and ethidium bromide, a morphological marker of apoptosis. Phytochemical profiling of EP was explored by estimating the phenol, flavonoid and tannin content in its various fractions and extract. The occurrence of gallic acid, a principal polyphenol in EP extract and fractions was detected and further quantified using HPTLC (High Performance Thin Layer Chromatography) fingerprinting. Result Active fraction of Elytranthe parasitica, EP.DEE exhibited potent cytotoxic activity in a dose dependent manner against HepG2 hepatocellular carcinoma cell line with an IC50 of 56.7 ± 7.8 μg/mL. Dual staining with acridine orange and ethidium bromide revealed that HepG2 cells treated with EP active fractions underwent cell death chiefly by apoptosis. Highest phenol, flavonoid and tannin content were observed in active fractions, EP.EA (Ethyl acetate fraction) and EP.DEE (Diethyl ether fraction). Gallic acid was identified and quantified in EP extract and active fractions, EP.DEE and EP.EA. Conclusion Our findings indicate EP active fraction could be a promising contender in the treatment of hepatocellular carcinoma.
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Arshad Q, Nigmatullina Y, Roberts RE, Goga U, Pikovsky M, Khan S, Lobo R, Flury AS, Pettorossi VE, Cohen-Kadosh R, Malhotra PA, Bronstein AM. Perceived state of self during motion can differentially modulate numerical magnitude allocation. Eur J Neurosci 2016; 44:2369-74. [DOI: 10.1111/ejn.13335] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 06/08/2016] [Accepted: 07/11/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Q. Arshad
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - Y. Nigmatullina
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - R. E. Roberts
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - U. Goga
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - M. Pikovsky
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - S. Khan
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - R. Lobo
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - A.-S. Flury
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - V. E. Pettorossi
- Department of Medicina Interna; Sezione di Fisiologia Umana; Universita di Perugia; Perugia Italy
| | - R. Cohen-Kadosh
- Department of Experimental Psychology; Oxford University; Oxford UK
| | - P. A. Malhotra
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
| | - A. M. Bronstein
- Division of Brain Sciences; Imperial College; Charing Cross Hospital; Fulham Palace Road London W6 8RF UK
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Crawford G, Lobo R, Brown G, Maycock B. The influence of population mobility on changing patterns of HIV acquisition: lessons for and from Australia. Health Promot J Austr 2016; 27:153-154. [PMID: 27040978 DOI: 10.1071/he15042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 12/01/2015] [Indexed: 11/23/2022] Open
Abstract
Investment, bipartisan support and involvement from affected communities have characterised Australia's HIV response, and helped maintain a low prevalence epidemic. Patterns of HIV acquisition are changing, with an increasing number of infections acquired overseas by migrant and mobile populations. A coordinated national response is required to address HIV acquisition in the context of population mobility.
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Affiliation(s)
- G Crawford
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - R Lobo
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - G Brown
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - B Maycock
- Collaboration for Evidence, Research and Impact in Public Health, School of Public Health, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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Gupta N, Lobo R, Kumar N, Bhagat JK, Mathew JE. Identity-based High-performance thin Layer Chromatography Fingerprinting Profile and Tumor Inhibitory Potential of Anisochilus carnosus (L.f.) wall Against Ehrlich Ascites Carcinoma. Pharmacogn Mag 2015; 11:S474-80. [PMID: 26929584 PMCID: PMC4745220 DOI: 10.4103/0973-1296.168977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
CONTEXT Anisochilus carnosus (L.f.) wall belonging to the family Lamiaceae is a plant that is widely used in folk medicine for treating eczema, cold, cough, and fever. OBJECTIVE In the present study, we explored the anticancer potential of A. carnosus leaves against Ehrlich ascites carcinoma (EAC) and estimated the quantity of luteolin present in various extracts and fractions of A. carnosus by high-performance thin layer chromatography (HPTLC) fingerprinting. MATERIALS AND METHODS Various factors such as tumor volume, tumor cell viability, tumor weight, prolongation of lifespan, and hematological parameters were assessed. RESULT We observed a significant lowering in tumor volume, tumor weight, and cell viability in EAC-induced mice following intervention with A. carnosus extracts. Also, there was a considerable prolongation of host lifespan and restoration of hematological parameters to almost normal levels with A. carnosus treatment. HPTLC fingerprinting of various extracts and fractions of A. carnosus along with luteolin as the reference standard revealed the occurrence of luteolin in all tested extracts and fractions of A. carnosus with the highest concentration being reported in the ethanol fraction. CONCLUSION A. carnosus exhibits potent anti-tumor potential which can most likely be attributed to the occurrence of different phytochemicals such as phytosterols, terpenoids, and flavonoids in the plant. Further studies to isolate compounds from A. carnosus and understand the mechanism of anti-tumor activity would be worthwhile. SUMMARY EAC induced mice that received A. carnosus treatment exhibited significant reduction in tumor volume, tumor weight and tumor cell viability. Their life span was considerably prolonged. We detected luteolin in A. carnosus aqueous and ethanol extract using HPTLC. Hence, anticancer activity of A. carnosus can be partly attributed to the presence of luteolin.
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Affiliation(s)
- Nilesh Gupta
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Nimmy Kumar
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Jay Kumar Bhagat
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Jessy Elizabeth Mathew
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
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Lobo R, Cahill C, Blake O, Abbas S, Meany TB, Hennessy T, Kiernan TJ. 13 High sensitive troponin t levels following elective external direct current cardioversion for atrial fibrillation and atrial flutter. Heart 2015. [DOI: 10.1136/heartjnl-2015-308621.13] [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: 11/04/2022]
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Palmerola K, Hsu J, Grossman L, Sauer M, Lobo R. Frozen embryo transfer pregnancy outcomes of hormonally replaced women of varying diagnoses using either leuprolide acetate suppressed or mid-cycle GNRH-antagonist approaches prior to embryo transfer. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sodde VK, Lobo R, Kumar N, Maheshwari R, Shreedhara CS. Cytotoxic activity of Macrosolen parasiticus (L.) Danser on the growth of breast cancer cell line (MCF-7). Pharmacogn Mag 2015; 11:S156-60. [PMID: 26109761 PMCID: PMC4461955 DOI: 10.4103/0973-1296.157719] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 10/31/2014] [Revised: 12/10/2014] [Accepted: 05/27/2015] [Indexed: 11/16/2022] Open
Abstract
Background: Macrosolen parasiticus (L.) Danser belonging to Loranthaceaea (mistletoe family) is a parasitic plant that grows on different host plants such as mango, jack fruit, peepal, neem tree, etc., This study was aimed to investigate the anti-cancer activity of methanolic and aqueous extract of stem of M. parasiticus. Objectives: To investigate the in vitro cytotoxic potential of the methanolic and aqueous extracts from stems of M. parasiticus against MCF-7 breast cancer cells by brine shrimp lethality (BSL) bioassay, MTT assay and sulforhodamine B (SRB) assay. Materials and Methods: The extracts were tested in human breast cancer cell lines in vitro for percentage cytotoxicity, apoptosis by acridine orange/ethidium bromide staining, LD50 and IC50 values after treatment with M. parasiticus extracts. Results: In BSL bioassay, aqueous extract showed more significant (P < 0.01) cytotoxicity with LD50 82.79 ± 2.67 μg/mL as compared to methanolic extract with LD50 125 ± 3.04 μg/mL. The methanolic extract of M. parasiticus showed IC50 97.33 ± 3.75 μg/mL (MTT) (P < 0.05) and 94.58 ± 3.84 μg/mL (SRB) (P < 0.01) assays against MCF-7. The aqueous extract of M. parasiticus demonstrated higher activity with IC50 59.33 ± 3.3 μg/mL (MTT) (P < 0.01) and 51.9 ± 1.87 μg/mL (SRB)(P < 0.01) assays, after 48 h of exposure and thus showed significant dose-dependent cytotoxic activity. Conclusion: The finding demonstrated that both extracts of M. parasiticus showed significant cytotoxic activity, however aqueous extract demonstrated higher activity against MCF-7 breast cancer cells.
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Affiliation(s)
- Vijay Kumar Sodde
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Nimmy Kumar
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - Rajalekshmi Maheshwari
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
| | - C S Shreedhara
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
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Srinivasan KK, Mathew JE, A.D’Silva KJ, Lobo R, Kumar N. Nephroprotective potential of Graptophyllum pictum against renal injury induced by gentamicin. Iran J Basic Med Sci 2015; 18:412-6. [PMID: 26019806 PMCID: PMC4439458] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 08/26/2014] [Indexed: 10/31/2022]
Abstract
OBJECTIVES To evaluate the effect of Graptophyllum pictum on lipid peroxidation and tissue antioxidant enzymes in liver and kidney of gentamicin induced nephrotoxic rats. MATERIALS AND METHODS Animals were grouped into 6: Group 1 received gum acacia, Group 2 received G. pictum ethanol extract (300 mg/kg), Group 3 received gentamicin, Groups 4, 5, 6 received gentamicin along with G. pictum at 300, 150, 75 mg/kg, respectively. Nephroprotective activity was evaluated by measuring thiobarbituric acid-reactive substances (TBARS), biochemical markers Glutathione (GSH), Glutathione-S Transferase(GST), Superoxide dismutase (SOD), Catalase (CAT), serum urea and creatinine levels. RESULTS Results obtained showed that gentamicin induced nephrotoxic rats exhibited lower activities of biochemical markers and raised levels of TBARS, serum creatinine and urea. Remarkably, after treatment with G. pictum extract, anomalous levels of biochemical markers, lipid peroxidation and serum creatinine were returned to normal. CONCLUSION The results propose that G. pictum has nephroprotective effects, and can be a promising natural source against gentamicin induced nephrotoxicity.
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Affiliation(s)
- Keloth Kaitheri Srinivasan
- Department of Chemistry, ShriMadhwaVadiraja Institute of Technology and Management, Udupi- 574115, India
| | - Jessy Elizabeth Mathew
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal-576104, Karnataka, India,*Corresponding author: Jessy Elizabeth Mathew. Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal-576104, India. Tel: +91820 2922482 ext. 138; Fax: +91820 2571998;
| | - Kerryn Joseph A.D’Silva
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal-576104, Karnataka, India
| | - Richard Lobo
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal-576104, Karnataka, India
| | - Nimmy Kumar
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal-576104, Karnataka, India
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Lobo R, McCann C, Hussaini A, Meany TB, Kiernan TJ. Left atrial appendage thrombus with resulting stroke post-RF ablation for atrial fibrillation in a patient on dabigatran. Ir Med J 2014; 107:329-330. [PMID: 25551903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Dabigatran etexilate is licensed for use in prevention of deep venous thromboembolism and in prevention of stroke and systemic embolism in nonvalvular atrial fibrillation (AF). It has also been used in patients for other indications as a substitute for warfarin therapy because it requires no monitoring; one group being patients undergoing radiofrequency (RF), ablation for AF, although there have been no consensus guidelines with regards to dosage and timing of dose. We report the case of a patient with documentary evidence of left atrial appendage (LAA) thrombus formation and neurological sequelae post-RF ablation despite being on dabigatran. This case highlights the concern that periprocedural dabigatran may not provide adequate protection from development of LAA thrombus and that a standardised protocol will need to be developed and undergo large multicentre trials before dabigatran can be safely used for patients undergoing RF-ablation.
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Affiliation(s)
- R Lobo
- University Hospital Limerick, Dooradoyle, Co Limerick.
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Lobo R, Lynch K, Casserly LF. Cross-sectional audit on the relevance of Elevated National Early Warning Score in medical patients at a Model 2 hospital in Ireland. Ir J Med Sci 2014; 184:893-8. [DOI: 10.1007/s11845-014-1216-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 10/18/2014] [Indexed: 10/24/2022]
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Bhagat J, Lobo R, Kumar N, Mathew JE, Pai A. Cytotoxic potential of Anisochilus carnosus (L.f.) wall and estimation of luteolin content by HPLC. BMC Complement Altern Med 2014; 14:421. [PMID: 25348394 PMCID: PMC4226858 DOI: 10.1186/1472-6882-14-421] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 10/17/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND Anisochilus carnosus (L.f.) wall (Lamiaceae), an annual herb which grows at high altitude is used extensively in folk medicine for the treatment of ailments such as gastric ulcer and skin diseases. The aim of our study was to evaluate the anticancer activity of different extracts of the leaves of A.carnosus. An attempt was also made to estimate the luteolin content in different extracts of Anisochilus carnosus by HPLC (High Performance Liquid Chromatography). METHODS In the current study, we explored the cytotoxic potential of petroleum ether, ethanolic and aqueous extracts of A.carnosus against breast adenocarcinoma cell line (BT-549), by in vitro MTT and SRB assay. We also detected the luteolin content in different extracts (ethanolic and aqueous) of A.carnosus by using HPLC as a tool of analysis. RESULTS The results demonstrate that petroleum ether and ethanolic extract of A.carnosus showed potent cytotoxic effect against BT-549 with an IC50 of 22.5 μg/ml (petroleum ether extract) and 87.24 μg/ml (ethanolic extract), by SRB assay, and 18.35 μg/ml (petroleum ether extract) and 58.64 μg/ml (ethanolic extract), by MTT assay. The aqueous extracts showed less cytotoxic effect with an IC50 of 211.26 μg/ml (by SRB assay) and 238.91 μg/ml (by MTT assay). HPLC results of luteolin content in various extracts using luteolin as the marker compound indicated the ethanol extract to contain the highest concentration of luteolin (0.372% w/w). The aqueous extract contained lower concentration of luteolin (0.282% w/w). CONCLUSION Our findings demonstrate that petroleum ether and ethanolic extract of A.carnosus shows promising anticancer activity and has the potential to be developed into a therapeutic option for the treatment of cancer.
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Lobo R, Kiernan TJ, Jaff MR. Medical therapy for critical limb ischemia and the diabetic foot: an update. J Cardiovasc Surg (Torino) 2013; 54:671-678. [PMID: 24126505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Critical limb ischemia is the most severe manifestation of chronic peripheral artery disease (PAD). The goal of medical care is to provide symptomatic relief in patients who are unsuitable for percutaneous or surgical revascularization and to reduce systemic cardiovascular risk. PAD is a common manifestation of systemic atherosclerosis and is associated with significant morbidity and mortality. PAD represents a marker for premature cardiovascular events. Patients with PAD, even in the absence of a history of myocardial infarction or ischemic stroke, have approximately the same relative risk of death from cardiovascular causes as do patients with a history of coronary or cerebrovascular disease alone. The PARTNERS study demonstrated that patients with PAD were less likely to receive appropriate treatment for their atherosclerotic risk factors than those who were being treated for coronary artery disease. The long term prognosis of patients with PAD is significantly worse than for patients with coronary artery disease alone. Newer therapies are being investigated to treat patients with critical limb ischemia who are unsuitable candidates for revascularization, and these will be discussed briefly.
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Affiliation(s)
- R Lobo
- Department of Cardiology, University Hospital Limerick Graduate Entry Medical School, University of Limerick, Limerick, Ireland
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Lamb D, Lobo R. Session 25: ASRM exchange session - Genetic and metabolic consequences for fertility in men and women. Hum Reprod 2013. [DOI: 10.1093/humrep/det153] [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: 11/13/2022] Open
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Lobo R, Meany B, O'Hanlon R, Kiernan TJ. Fever of unknown origin, with a twist. Case Reports 2013; 2013:bcr-2012-008074. [DOI: 10.1136/bcr-2012-008074] [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: 11/03/2022] Open
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Lobo R, Fraser A, Kiely P, Boers P. Parkinsonism can be cured. Case Reports 2013; 2013:bcr-2012-008057. [DOI: 10.1136/bcr-2012-008057] [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: 11/03/2022] Open
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Gianaroli L, Racowsky C, Geraedts J, Cedars M, Makrigiannakis A, Lobo R. Best practices of ASRM and ESHRE: a journey through reproductive medicine. Hum Reprod 2012; 27:3365-79. [PMID: 23097354 DOI: 10.1093/humrep/des338] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The American Society for Reproductive Medicine (ASRM) and the European Society of Human Reproduction and Embryology (ESHRE) are the two largest societies in the world whose members comprise the major experts and professionals working in the field of reproductive medicine and embryology. These societies have never before had a joint scientific meeting. METHODS A 3-day meeting was planned and took place in March of 2012. The goal was to present and debate key topics, as well as modes of practice in reproductive medicine and to discuss recent developments in the field. RESULTS Presentations by members of ASRM and ESHRE were of three types: 'state of the art' lectures, 'back-to-back' presentations of two points of view and debates. CONCLUSIONS For the first time, ASRM and ESHRE held a joint meeting where a special emphasis was given to presentations on the hottest topics in the field. Although different opinions and approaches sometimes exist on the two sides of the Atlantic, an appreciation and acceptance of these differences was evident, and there was more commonality than divergence of opinion.
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Affiliation(s)
- L Gianaroli
- Reproductive Medicine Unit, SIS MeR, Bologna, Italy.
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