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Chauhan SS, Garg P, Parthasarathi R. Computational framework for identifying and evaluating mutagenic and xenoestrogenic potential of food additives. J Hazard Mater 2024; 470:134233. [PMID: 38603913 DOI: 10.1016/j.jhazmat.2024.134233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/23/2024] [Accepted: 04/05/2024] [Indexed: 04/13/2024]
Abstract
Food additives are chemicals incorporated in food to enhance its flavor, color and prevent spoilage. Some of these are associated with substantial health hazards, including developmental disorders, increase cancer risk, and hormone disruption. Hence, this study aimed to comprehend the in-silico toxicology framework for evaluating mutagenic and xenoestrogenic potential of food additives and their association with breast cancer. A total of 2885 food additives were screened for toxicity based on Threshold of Toxicological Concern (TTC), mutagenicity endpoint prediction, and mutagenic structural alerts/toxicophores identification. Ten food additives were identified as having mutagenic potential based on toxicity screening. Furthermore, Protein-Protein Interaction (PPI) analysis identified ESR1, as a key hub gene in breast cancer. KEGG pathway analysis verified that ESR1 plays a significant role in breast cancer pathogenesis. Additionally, competitive interaction studies of the predicted potential mutagenic food additives with the estrogen receptor-α were evaluated at agonist and antagonist binding sites. Indole, Dichloromethane, Trichloroethylene, Quinoline, 6-methyl quinoline, Ethyl nitrite, and 4-methyl quinoline could act as agonists, and Paraldehyde, Azodicarbonamide, and 2-acetylfuranmay as antagonists. The systematic risk assessment framework reported in this study enables the exploration of mutagenic and xenoestrogenic potential associated with food additives for hazard identification and management.
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Affiliation(s)
- Shweta Singh Chauhan
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR, Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Prekshi Garg
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR, Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR, Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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2
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Gautam K, Pandey N, Yadav D, Parthasarathi R, Turner A, Anbumani S, Jha AN. Ecotoxicological impacts of landfill sites: Towards risk assessment, mitigation policies and the role of artificial intelligence. Sci Total Environ 2024; 927:171804. [PMID: 38513865 DOI: 10.1016/j.scitotenv.2024.171804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/14/2024] [Accepted: 03/16/2024] [Indexed: 03/23/2024]
Abstract
Waste disposal in landfills remains a global concern. Despite technological developments, landfill leachate poses a hazard to ecosystems and human health since it acts as a secondary reservoir for legacy and emerging pollutants. This study provides a systematic and scientometric review of the nature and toxicity of pollutants generated by landfills and means of assessing their potential risks. Regarding human health, unregulated waste disposal and pathogens in leachate are the leading causes of diseases reported in local populations. Both in vitro and in vivo approaches have been employed in the ecotoxicological risk assessment of landfill leachate, with model organisms ranging from bacteria to birds. These studies demonstrate a wide range of toxic effects that reflect the complex composition of leachate and geographical variations in climate, resource availability and management practices. Based on bioassay (and other) evidence, categories of persistent chemicals of most concern include brominated flame retardants, per- and polyfluorinated chemicals, pharmaceuticals and alkyl phenol ethoxylates. However, the emerging and more general literature on microplastic toxicity suggests that these particles might also be problematic in leachate. Various mitigation strategies have been identified, with most focussing on improving landfill design or leachate treatment, developing alternative disposal methods and reducing waste volume through recycling or using more sustainable materials. The success of these efforts will rely on policies and practices and their enforcement, which is seen as a particular challenge in developing nations and at the international (and transboundary) level. Artificial intelligence and machine learning afford a wide range of options for evaluating and reducing the risks associated with leachates and gaseous emissions from landfills, and various approaches tested or having potential are discussed. However, addressing the limitations in data collection, model accuracy, real-time monitoring and our understanding of environmental impacts will be critical for realising this potential.
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Affiliation(s)
- Krishna Gautam
- Ecotoxicology Laboratory, REACT Division, CSIR-Indian Institute of Toxicology Research, CRK Campus, Lucknow 226008, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Namrata Pandey
- Ecotoxicology Laboratory, REACT Division, CSIR-Indian Institute of Toxicology Research, CRK Campus, Lucknow 226008, Uttar Pradesh, India
| | - Dhvani Yadav
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Andrew Turner
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Sadasivam Anbumani
- Ecotoxicology Laboratory, REACT Division, CSIR-Indian Institute of Toxicology Research, CRK Campus, Lucknow 226008, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Awadhesh N Jha
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.
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Priyadarsinee L, Jamir E, Nagamani S, Mahanta HJ, Kumar N, John L, Sarma H, Kumar A, Gaur AS, Sahoo R, Vaikundamani S, Murugan NA, Priyakumar UD, Raghava GPS, Bharatam PV, Parthasarathi R, Subramanian V, Sastry GM, Sastry GN. Molecular Property Diagnostic Suite for COVID-19 (MPDS COVID-19): an open-source disease-specific drug discovery portal. GigaByte 2024; 2024:gigabyte114. [PMID: 38525218 PMCID: PMC10958779 DOI: 10.46471/gigabyte.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/11/2024] [Indexed: 03/26/2024] Open
Abstract
Molecular Property Diagnostic Suite (MPDS) was conceived and developed as an open-source disease-specific web portal based on Galaxy. MPDSCOVID-19 was developed for COVID-19 as a one-stop solution for drug discovery research. Galaxy platforms enable the creation of customized workflows connecting various modules in the web server. The architecture of MPDSCOVID-19 effectively employs Galaxy v22.04 features, which are ported on CentOS 7.8 and Python 3.7. MPDSCOVID-19 provides significant updates and the addition of several new tools updated after six years. Tools developed by our group in Perl/Python and open-source tools are collated and integrated into MPDSCOVID-19 using XML scripts. Our MPDS suite aims to facilitate transparent and open innovation. This approach significantly helps bring inclusiveness in the community while promoting free access and participation in software development. Availability & Implementation The MPDSCOVID-19 portal can be accessed at https://mpds.neist.res.in:8085/.
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Affiliation(s)
- Lipsa Priyadarsinee
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Esther Jamir
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - Selvaraman Nagamani
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Hridoy Jyoti Mahanta
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Nandan Kumar
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - Lijo John
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - Himakshi Sarma
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - Asheesh Kumar
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - Anamika Singh Gaur
- CSIR-Indian Institute of Toxicology Research, Lucknow, 226001, Uttar Pradesh, India
| | - Rosaleen Sahoo
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - S. Vaikundamani
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
| | - N. Arul Murugan
- Indraprastha Institute of Information Technology, Delhi, 110020, India
| | - U. Deva Priyakumar
- International Institute of Information Technology, Gachibowli, Hyderabad, 500032, India
| | - G. P. S. Raghava
- Indraprastha Institute of Information Technology, Delhi, 110020, India
| | - Prasad V. Bharatam
- National Institute of Pharmaceutical Education and Research, S.A.S. Nagar (Mohali), 160062, India
| | - Ramakrishnan Parthasarathi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- CSIR-Indian Institute of Toxicology Research, Lucknow, 226001, Uttar Pradesh, India
| | - V. Subramanian
- Department of Chemistry, Indian Institute of Technology, Chennai, 600036, India
| | - G. Madhavi Sastry
- Schrödinger Inc., Octave, Salarpuria Sattva Knowledge City, 1st Floor, Unit 3A, Hyderabad, 500081, India
| | - G. Narahari Sastry
- CSIR–North East Institute of Science and Technology, Jorhat, 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Indian Institute of Technology (IIT) Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
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Gupta A, Jamal T, Rajbhar P, Gaur AS, Chauhan SS, Parthasarathi R. Cytokines inhibitory mechanism of Prunus domestica L. (Plum) peptides as potential immunomodulators against systemic lupus erythematosus: an in-silico screening. In Silico Pharmacol 2024; 12:12. [PMID: 38370860 PMCID: PMC10866836 DOI: 10.1007/s40203-023-00188-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 12/28/2023] [Indexed: 02/20/2024] Open
Abstract
Natural bioactive peptides exhibit various chemical and structural properties to enhance the immune response against multiple inflammatory and autoimmune related disorders. The immunomodulatory function and bioactivity of seed peptides show the capability for the development of biotherapeutics that could prevent autoimmune diseases. The aim of current study is to determine the immunomodulatory function of bioactive peptides derived from the seed of plum (Prunus domestica L.) by applying various immunoinformatic approaches. A thorough analysis of forty-one peptides was performed including drug likeliness, pharmacokinetic, and bioactivity profiling studies. Further, molecular docking and molecular dynamics (MD) simulations of screened peptides were carried out with the two interleukin targets (IL-17A and IL-23) of systemic lupus erythematosus (SLE). After the systematic screening, four peptides, namely HLLP, LPLL, LPAGV, and NLPL, were found as potential inhibitors against SLE. Additionally, site-directed mutagenesis analysis was conducted to explore the role of essential amino acid residues in the binding pattern/energy change. Computational alanine screening analysis found that CYS123, CYS121 of IL-17A and ASP270, and SER249 of IL-23 as hot spot residues that could play an important role in the inhibition property of screened peptides. Overall, the methodology described in the study can be utilized for developing unique peptide inhibitors that have a preventative role against SLE. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s40203-023-00188-8.
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Affiliation(s)
- Anshika Gupta
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
| | - Tanya Jamal
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
| | - Priyanka Rajbhar
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
| | - Anamika Singh Gaur
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
| | - Shweta Singh Chauhan
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
- Academy of Scientific and Innovative Research (AcSIR), Uttar Pradesh, Ghaziabad, 201002 India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Toxicoinformatics Research Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001 India
- Academy of Scientific and Innovative Research (AcSIR), Uttar Pradesh, Ghaziabad, 201002 India
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Prakash V, Chauhan SS, Ansari MI, Jagdale P, Ayanur A, Parthasarathi R, Anbumani S. 4-Methylbenzylidene camphor induced neurobehavioral toxicity in zebrafish (Danio rerio) embryos. Environ Res 2024; 242:117746. [PMID: 38008201 DOI: 10.1016/j.envres.2023.117746] [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: 05/21/2023] [Revised: 09/05/2023] [Accepted: 11/19/2023] [Indexed: 11/28/2023]
Abstract
4-Methylbenzylidene camphor (4-MBC) is a widely used organic UV filter in personal care products. Extensive use of 4-MBC and its frequent detection in aquatic ecosystems defile the biota with muscular and neuronal impairments. This study investigates the neurobehavioral toxicity of 4-MBC using Danio rerio as a model organism. Embryos were exposed semi-statically to 4-MBC at 5, 50, and 500 μg/L concentrations for 10-day post fertilization (dpf). Embryos exhibited a significant thigmotaxis and decreased startle touch response with altered expression of nervous system mRNA transcripts on 5 & 10 dpf. Compared to the sham-exposed group, 4-MBC treated larvae exhibited changes in the expression of shha, ngn1, mbp, elavl3, α1-tubulin, syn2a, and gap43 genes. Since ngn1 induction is mediated by shh signaling during sensory neuron specification, the elevated protein expression of NGN1 indicates 4-MBC interference in the sonic hedgehog signaling pathway. This leads to sensory neuron impairment and function such as 'sense' as evident from reduced touch response. In addition, larval brain histology with a reduced number of cells in the Purkinje layer emblazing the defunct motor coordination. Predictive toxicity study also showed a higher affinity of 4-MBC to modeled Shh protein. Thus, the findings of the present work highlighted that 4-MBC is potential to induce developmental neurotoxicity at both behavioral and molecular functional perspectives, and developing D. rerio larvae could be considered as a suitable alternate animal model to assess the neurological dysfunction of organic UV filters.
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Affiliation(s)
- Ved Prakash
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shweta Singh Chauhan
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Mohammad Imran Ansari
- Food Drug and Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Pankaj Jagdale
- Pathology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
| | - Anjaneya Ayanur
- Pathology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sadasivam Anbumani
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Chauhan SS, Gupta A, Srivastava A, Parthasarathi R. Discovering targeted inhibitors for Escherichia coli efflux pump fusion proteins using computational and structure-guided approaches. J Comput Chem 2024; 45:13-24. [PMID: 37656428 DOI: 10.1002/jcc.27215] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/18/2023] [Accepted: 08/14/2023] [Indexed: 09/02/2023]
Abstract
Multidrug resistance pathogens causing infections and illness remain largely untreated clinically. Efflux pumps are one of the primary processes through which bacteria develop resistance by transferring antibiotics from the interior of their cells to the outside environment. Inhibiting these pumps by developing efficient derivatives appears to be a promising strategy for restoring antibiotic potency. This investigation explores literature-reported inhibitors of E. coli efflux pump fusion proteins AcrB-AcrA and identify potential chemical derivatives of these inhibitors to overcome the limitations. Using computational and structure-guided approaches, a study was conducted with the selected inhibitors (AcrA:25-AcrB:59) obtained by data mining and their derivatives (AcrA:857-AcrB:3891) to identify their inhibitory effect on efflux pump using virtual screening, molecular docking and density functional theory (DFT) calculations. The finding indicates that Compound 2 (ZINC000072136376) has shown better binding and a significant inhibitory effect on AcrA, while Compound 3 (ZINC000072266819) has shown stronger binding and substantial inhibition effect on both non-mutant and mutated AcrB subunits. The identified derivatives could exhibit a better inhibitor and provide a potential approach for restoring the actions of resistant antibiotics.
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Affiliation(s)
- Shweta Singh Chauhan
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Anshika Gupta
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - Aashna Srivastava
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Singh P, Pandit S, Sinha M, Yadav D, Parthasarathi R. Computational Risk Assessment of Persistence, Bioaccumulation, and Toxicity of Novel Flame-Retardant Chemicals. J Phys Chem A 2023; 127:10747-10757. [PMID: 38108655 DOI: 10.1021/acs.jpca.3c04160] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Novel brominated flame retardants (NBFRs) have emerged as chemicals of environmental concern, as they have been widely used as an alternative to polybrominated diphenyl ethers (PBDEs). Considering the similar structural features of NBFRs and PBDEs necessitates a comprehensive investigation to understand the physicochemical relationships of these compounds and their ability to alter biological functions. In this study, we investigated the persistent nature of NBFRs in terms of thyroid-disrupting potential by understanding the structure-stability aspects using density functional theory (DFT)-based reactivity parameters and interactions via molecular docking and molecular dynamics (MD) simulations. The results indicate that the DFT-based stability descriptor (chemical hardness) is associated with the persistent nature of NBFRs. The computed molecular interaction profile revealed prominent interactions between thyroid receptor-β (TR-β) and NBFRs. Stable trajectory and interactions with TR-β were obtained with ATE, p-TBX, PBT, PBEB, and TBBPA-DBPE during 100 ns of MD simulation. The results of these studies have suggested that the presence of a higher number of halogenated atoms increases the stability vis-à-vis the persistence and endocrine disruption potential of NBFRs.
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Affiliation(s)
- Prakrity Singh
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Shraddha Pandit
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Meetali Sinha
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Dhvani Yadav
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
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Szal T, Chauhan SS, Lewe P, Rachad FZ, Madre M, Paunina L, Witt S, Parthasarathi R, Windshügel B. Efflux Pump-Binding 4(3-Aminocyclobutyl)Pyrimidin-2-Amines Are Colloidal Aggregators. Biomolecules 2023; 13:1000. [PMID: 37371580 DOI: 10.3390/biom13061000] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Efflux pumps are a relevant factor in antimicrobial resistance. In E. coli, the tripartite efflux pump AcrAB-TolC removes a chemically diverse set of antibiotics from the bacterium. Therefore, small molecules interfering with efflux pump function are considered adjuvants for improving antimicrobial therapies. Several compounds targeting the periplasmic adapter protein AcrA and the efflux pump AcrB have been identified to act synergistically with different antibiotics. Among those, several 4(3-aminocyclobutyl)pyrimidin-2-amines have been shown to bind to both proteins. In this study, we intended to identify analogs of these substances with improved binding affinity to AcrA using virtual screening followed by experimental validation. While we succeeded in identifying several compounds showing a synergistic effect with erythromycin on E. coli, biophysical studies suggested that 4(3-aminocyclobutyl)pyrimidin-2-amines form colloidal aggregates that do not bind specifically to AcrA. Therefore, these substances are not suited for further development. Our study emphasizes the importance of implementing additional control experiments to identify aggregators among bioactive compounds.
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Affiliation(s)
- Tania Szal
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, 22525 Hamburg, Germany
- School of Science, Constructor University, 28759 Bremen, Germany
| | - Shweta Singh Chauhan
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Philipp Lewe
- Centre for Structural Systems Biology (CSSB), University Medical Center Hamburg-Eppendorf (UKE), 22607 Hamburg, Germany
| | - Fatima-Zahra Rachad
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, 22525 Hamburg, Germany
| | - Marina Madre
- Latvian Institute of Organic Synthesis, LV-1006 Riga, Latvia
| | - Laura Paunina
- Latvian Institute of Organic Synthesis, LV-1006 Riga, Latvia
| | - Susanne Witt
- Centre for Structural Systems Biology (CSSB), University Medical Center Hamburg-Eppendorf (UKE), 22607 Hamburg, Germany
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Toxicoinformatics & Industrial Research CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Björn Windshügel
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, 22525 Hamburg, Germany
- School of Science, Constructor University, 28759 Bremen, Germany
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Singh Gaur A, Nagamani S, Priyadarsinee L, Mahanta HJ, Parthasarathi R, Sastry GN. Galaxy for open-source computational drug discovery solutions. Expert Opin Drug Discov 2023; 18:579-590. [PMID: 37089036 DOI: 10.1080/17460441.2023.2205122] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
INTRODUCTION Drug discovery in academia and industry poses contrasting challenges. While academia focuses on producing new knowledge, industry is keen on product development and success in clinical trials. Galaxy is a web-based open-source computational workbench which is used to analyze large datasets and is customized to integrate analysis and visualization tools in a single framework. Depending on the methodology, one can generate customized and suitable workflows in the Galaxy platform. AREAS COVERED Herein, the authors appraise the suitability of the Galaxy platform for developing a disease specific web portal called the Molecular Property Diagnostic Suite (MPDS). The authors include their future perspectives in the expert opinion section. EXPERT OPINION Galaxy is ideally suited for community-based software development as the scripts, tools, and codes developed in the different programming languages can be integrated in an extremely efficient fashion. MPDS puts forth a new approach known as a disease-specific web portal which aims to implement a range of computational methods and algorithms that can be developed and shared freely across the community of computer aided drug design (CADD) scientists.
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Affiliation(s)
- Anamika Singh Gaur
- Advanced Computation and Data Sciences Division, CSIR -North East Institute of Science and Technology, Jorhat, India
- Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Selvaraman Nagamani
- Advanced Computation and Data Sciences Division, CSIR -North East Institute of Science and Technology, Jorhat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Lipsa Priyadarsinee
- Advanced Computation and Data Sciences Division, CSIR -North East Institute of Science and Technology, Jorhat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Hridoy J Mahanta
- Advanced Computation and Data Sciences Division, CSIR -North East Institute of Science and Technology, Jorhat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Ramakrishnan Parthasarathi
- Toxicoinformatics & Industrial Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - G Narahari Sastry
- Advanced Computation and Data Sciences Division, CSIR -North East Institute of Science and Technology, Jorhat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Gupta A, Chauhan SS, Gaur AS, Parthasarathi R. Computational screening for investigating the synergistic regulatory potential of drugs and phytochemicals in combination with 2-deoxy-D-glucose against SARS-CoV-2. Struct Chem 2022; 33:2179-2193. [PMID: 36093277 PMCID: PMC9439941 DOI: 10.1007/s11224-022-02049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/28/2022] [Indexed: 12/15/2022]
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Pandit S, Singh P, Parthasarathi R. Computational risk assessment framework for the hazard analysis of bisphenols and quinone metabolites. J Hazard Mater 2022; 426:128031. [PMID: 34933259 DOI: 10.1016/j.jhazmat.2021.128031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/17/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Bisphenol A (BPA) is a widely used chemical in plastics but its proven harmful effects has led to the replacement and production of its analogs that might also induce hazard as well as associated risks. To elucidate the adverse impact of the BPA analogs, a comprehensive computational framework is developed which applies toxicogenomics aligned with Density Functional Theory (DFT) and Molecular Dynamics (MD) based approaches to understand the toxic potential of quinone metabolites of Bisphenol F (BPF) and 3,3'-dimethylbisphenol A (DMBPA). The obtained results indicate a similar chemical reactivity profile for these metabolites of bisphenols to BPA metabolite. MD simulation revealed that the quinone metabolites tend to interact with the DNA comprising hydrogen bonding, van der Waals forces, and electrostatic interactions as an onset for covalent binding to adduct formation. Structural analysis suggests that interactions with DC9, DG10, DG16, DA17, DA18, and DT19 play a crucial role in stabilizing the quinone metabolite in the interactive pocket of DNA. These observations are demonstrating that BPF and DMBPA have the potential to impose genotoxicity via forming the quinone metabolite adducts. Combination of DFT and MD-based computational approaches providing a structure-activity-toxicity spectrum of chemicals can serve for the purpose of risk assessment.
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Affiliation(s)
- Shraddha Pandit
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prakrity Singh
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Vellingiri B, Aishwarya SY, Benita Jancy S, Sriram Abhishek G, Winster Suresh Babu H, Vijayakumar P, Narayanasamy A, Mariappan S, Sangeetha R, Valsala Gopalakrishnan A, Parthasarathi R, Iyer M. An anxious relationship between Autism Spectrum Disorder and Gut Microbiota: A tangled chemistry? J Clin Neurosci 2022; 99:169-189. [PMID: 35286970 DOI: 10.1016/j.jocn.2022.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 12/27/2022]
Abstract
Autism spectrum disorder (ASD) is a serious multifactorial neurodevelopmental disorder often accompanied by strained social communication, repetitive behaviour, immune dysregulation, and gastrointestinal (GI) issues. Recent studies have recorded a link between dysbiosis in the gut microbiota (gm) and the primary stages of ASD. A bidirectional connection (also called microbiota-gut-brain-axis) exchanges information between the gut bacteria and central nervous system. When the homeostasis of the microenvironment of the gut is dysregulated, it causes oxidative stress, affecting neuronal cells and neurotransmitters, thereby causing neurodevelopmental disorders. Studies have confirmed a difference in the constitution of gut bacteria among ASD cases and their controls. Numerous studies on animal models of ASD have shown altered gm and its association with abnormal metabolite profile and altered behaviour phenotype. This process happens due to an abnormal metabolite production in gm, leading to changes in the immune system, especially in ASD. Hence, this review aims to question the current knowledge on gm dysbiosis and its related GI discomforts and ASD behavioural symptoms and shed light on the possible therapeutic approaches available to deal with this situation. Thereby, though it is understood that more research might be needed to prove an association or causal relationship between gm and ASD, therapy with the microbiome may also be considered as an effective strategy to combat this issue.
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Affiliation(s)
- Balachandar Vellingiri
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India.
| | - S Y Aishwarya
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, Tamil Nadu, India
| | - S Benita Jancy
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, Tamil Nadu, India
| | - G Sriram Abhishek
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, Tamil Nadu, India
| | - Harysh Winster Suresh Babu
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India; Disease Proteomics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Padmavathi Vijayakumar
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Arul Narayanasamy
- Disease Proteomics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Sujitha Mariappan
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, Tamil Nadu, India
| | - R Sangeetha
- Department of Zoology and Wild Life Biology, Government Arts College, Udhagamandalam 643002, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014 Tamil Nadu, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Centre for Innovation and Translational Research, Environmental Monitoring and Intervention Hub (DSIR-CRTDH), CSIR-Indian Institute of Toxicology Research, Lucknow 226001 Uttar Pradesh, India
| | - Mahalaxmi Iyer
- Livestock Farming and Bioresource Technology, Tamil Nadu, India.
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Sinha M, Sachan DK, Bhattacharya R, Singh P, Parthasarathi R. ToxDP2 Database: Toxicity prediction of dietary polyphenols. Food Chem 2022; 370:131350. [PMID: 34788962 DOI: 10.1016/j.foodchem.2021.131350] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/10/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022]
Abstract
Polyphenols are bioactive substances that minimize the risk of a variety of chronic diseases. Exposure to polyphenol bioactive compounds in our diet has increased across the globe, with amplified expectations from consumers, industry, and regulators centered on the potential benefits and essential safety of these compounds. Several data resources for beneficial properties of dietary polyphenols are present; however, toxicological information remains partial. We present a dynamic web-based database to assess dietary polyphenols' safety and fulfill the toxicity data gaps in the domain of food safety. The database (ToxDP2) comprises 415 dietary polyphenolic compounds, distributed into 15 subclasses with 25,792 collected and predicted data points. This web server facilitates the exploration of polyphenols for divergent applications. The data-driven approach on the ToxDP2 provides researchers with an understanding of polyphenols structure-function-toxicity relationships beneficial for developing nutraceuticals, pharmaceuticals, herbal supplements, and formulations.
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Affiliation(s)
- Meetali Sinha
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Deepak Kumar Sachan
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Roshni Bhattacharya
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Prakrity Singh
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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14
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Ledesma JR, Ma J, Vongpradith A, Maddison ER, Novotney A, Biehl MH, LeGrand KE, Ross JM, Jahagirdar D, Bryazka D, Feldman R, Abolhassani H, Abosetugn AE, Abu-Gharbieh E, Adebayo OM, Adnani QES, Afzal S, Ahinkorah BO, Ahmad SA, Ahmadi S, Ahmed Rashid T, Ahmed Salih Y, Aklilu A, Akunna CJ, Al Hamad H, Alahdab F, Alemayehu Y, Alene KA, Ali BA, Ali L, Alipour V, Alizade H, Al-Raddadi RM, Alvis-Guzman N, Amini S, Amit AML, Anderson JA, Androudi S, Antonio CAT, Antony CM, Anwer R, Arabloo J, Arja A, Asemahagn MA, Atre SR, Azhar GS, B DB, Babar ZUD, Baig AA, Banach M, Barqawi HJ, Barra F, Barrow A, Basu S, Belgaumi UI, Bhagavathula AS, Bhardwaj N, Bhardwaj P, Bhattacharjee NV, Bhattacharyya K, Bijani A, Bikbov B, Boloor A, Briko NI, Buonsenso D, Burugina Nagaraja S, Butt ZA, Carter A, Carvalho F, Charan J, Chatterjee S, Chattu SK, Chattu VK, Christopher DJ, Chu DT, Claassens MM, Dadras O, Dagnew AB, Dai X, Dandona L, Dandona R, Daneshpajouhnejad P, Darwesh AM, Dhamnetiya D, Dianatinasab M, Diaz D, Doan LP, Eftekharzadeh S, Elhadi M, Emami A, Enany S, Faraon EJA, Farzadfar F, Fernandes E, Ferro Desideri L, Filip I, Fischer F, Foroutan M, Frank TD, Garcia-Basteiro AL, Garcia-Calavaro C, Garg T, Geberemariyam BS, Ghadiri K, Ghashghaee A, Golechha M, Goodridge A, Gupta B, Gupta S, Gupta VB, Gupta VK, Haider MR, Hamidi S, Hanif A, Haque S, Harapan H, Hargono A, Hasaballah AI, Hashi A, Hassan S, Hassankhani H, Hayat K, Hezam K, Holla R, Hosseinzadeh M, Hostiuc M, Househ M, Hussain R, Ibitoye SE, Ilic IM, Ilic MD, Irvani SSN, Ismail NE, Itumalla R, Jaafari J, Jacobsen KH, Jain V, Javanmardi F, Jayapal SK, Jayaram S, Jha RP, Jonas JB, Joseph N, Joukar F, Kabir Z, Kamath A, Kanchan T, Kandel H, Katoto PDMC, Kayode GA, Kendrick PJ, Kerbo AA, Khajuria H, Khalilov R, Khatab K, Khoja AT, Khubchandani J, Kim MS, Kim YJ, Kisa A, Kisa S, Kosen S, Koul PA, Koulmane Laxminarayana SL, Koyanagi A, Krishan K, Kucuk Bicer B, Kumar A, Kumar GA, Kumar N, Kumar N, Kwarteng A, Lak HM, Lal DK, Landires I, Lasrado S, Lee SWH, Lee WC, Lin C, Liu X, Lopukhov PD, Lozano R, Machado DB, Madhava Kunjathur S, Madi D, Mahajan PB, Majeed A, Malik AA, Martins-Melo FR, Mehta S, Memish ZA, Mendoza W, Menezes RG, Merie HE, Mersha AG, Mesregah MK, Mestrovic T, Mheidly NM, Misra S, Mithra P, Moghadaszadeh M, Mohammadi M, Mohammadian-Hafshejani A, Mohammed S, Molokhia M, Moni MA, Montasir AA, Moore CE, Nagarajan AJ, Nair S, Nair S, Naqvi AA, Narasimha Swamy S, Nayak BP, Nazari J, Neupane Kandel S, Nguyen TH, Nixon MR, Nnaji CA, Ntsekhe M, Nuñez-Samudio V, Oancea B, Odukoya OO, Olagunju AT, Oren E, P A M, Parthasarathi R, Pashazadeh Kan F, Pattanshetty SM, Paudel R, Paul P, Pawar S, Pepito VCF, Perico N, Pirestani M, Polibin RV, Postma MJ, Pourshams A, Prashant A, Pribadi DRA, Radfar A, Rafiei A, Rahim F, Rahimi-Movaghar V, Rahman M, Rahman M, Rahmani AM, Ranasinghe P, Rao CR, Rawaf DL, Rawaf S, Reitsma MB, Remuzzi G, Renzaho AMN, Reta MA, Rezaei N, Rezahosseini O, Rezai MS, Rezapour A, Roshandel G, Roshchin DO, Sabour S, Saif-Ur-Rahman KM, Salam N, Samadi Kafil H, Samaei M, Samy AM, Saroshe S, Sartorius B, Sathian B, Sawyer SM, Senthilkumaran S, Seylani A, Shafaat O, Shaikh MA, Sharafi K, Shetty RS, Shigematsu M, Shin JI, Silva JP, Singh JK, Sinha S, Skryabin VY, Skryabina AA, Spurlock EE, Sreeramareddy CT, Steiropoulos P, Sufiyan MB, Tabuchi T, Tadesse EG, Tamir Z, Tarkang EE, Tekalegn Y, Tesfay FH, Tessema B, Thapar R, Tleyjeh II, Tobe-Gai R, Tran BX, Tsegaye B, Tsegaye GW, Ullah A, Umeokonkwo CD, Valadan Tahbaz S, Vo B, Vu GT, Waheed Y, Walters MK, Whisnant JL, Woldekidan MA, Wubishet BL, Yahyazadeh Jabbari SH, Yazie TSY, Yeshaw Y, Yi S, Yiğit V, Yonemoto N, Yu C, Yunusa I, Zastrozhin MS, Zastrozhina A, Zhang ZJ, Zumla A, Mokdad AH, Salomon JA, Reiner Jr RC, Lim SS, Naghavi M, Vos T, Hay SI, Murray CJL, Kyu HH. Global, regional, and national sex differences in the global burden of tuberculosis by HIV status, 1990-2019: results from the Global Burden of Disease Study 2019. Lancet Infect Dis 2022; 22:222-241. [PMID: 34563275 PMCID: PMC8799634 DOI: 10.1016/s1473-3099(21)00449-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/21/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Tuberculosis is a major contributor to the global burden of disease, causing more than a million deaths annually. Given an emphasis on equity in access to diagnosis and treatment of tuberculosis in global health targets, evaluations of differences in tuberculosis burden by sex are crucial. We aimed to assess the levels and trends of the global burden of tuberculosis, with an emphasis on investigating differences in sex by HIV status for 204 countries and territories from 1990 to 2019. METHODS We used a Bayesian hierarchical Cause of Death Ensemble model (CODEm) platform to analyse 21 505 site-years of vital registration data, 705 site-years of verbal autopsy data, 825 site-years of sample-based vital registration data, and 680 site-years of mortality surveillance data to estimate mortality due to tuberculosis among HIV-negative individuals. We used a population attributable fraction approach to estimate mortality related to HIV and tuberculosis coinfection. A compartmental meta-regression tool (DisMod-MR 2.1) was then used to synthesise all available data sources, including prevalence surveys, annual case notifications, population-based tuberculin surveys, and tuberculosis cause-specific mortality, to produce estimates of incidence, prevalence, and mortality that were internally consistent. We further estimated the fraction of tuberculosis mortality that is attributable to independent effects of risk factors, including smoking, alcohol use, and diabetes, for HIV-negative individuals. For individuals with HIV and tuberculosis coinfection, we assessed mortality attributable to HIV risk factors including unsafe sex, intimate partner violence (only estimated among females), and injection drug use. We present 95% uncertainty intervals for all estimates. FINDINGS Globally, in 2019, among HIV-negative individuals, there were 1·18 million (95% uncertainty interval 1·08-1·29) deaths due to tuberculosis and 8·50 million (7·45-9·73) incident cases of tuberculosis. Among HIV-positive individuals, there were 217 000 (153 000-279 000) deaths due to tuberculosis and 1·15 million (1·01-1·32) incident cases in 2019. More deaths and incident cases occurred in males than in females among HIV-negative individuals globally in 2019, with 342 000 (234 000-425 000) more deaths and 1·01 million (0·82-1·23) more incident cases in males than in females. Among HIV-positive individuals, 6250 (1820-11 400) more deaths and 81 100 (63 300-100 000) more incident cases occurred among females than among males in 2019. Age-standardised mortality rates among HIV-negative males were more than two times greater in 105 countries and age-standardised incidence rates were more than 1·5 times greater in 74 countries than among HIV-negative females in 2019. The fraction of global tuberculosis deaths among HIV-negative individuals attributable to alcohol use, smoking, and diabetes was 4·27 (3·69-5·02), 6·17 (5·48-7·02), and 1·17 (1·07-1·28) times higher, respectively, among males than among females in 2019. Among individuals with HIV and tuberculosis coinfection, the fraction of mortality attributable to injection drug use was 2·23 (2·03-2·44) times greater among males than females, whereas the fraction due to unsafe sex was 1·06 (1·05-1·08) times greater among females than males. INTERPRETATION As countries refine national tuberculosis programmes and strategies to end the tuberculosis epidemic, the excess burden experienced by males is important. Interventions are needed to actively communicate, especially to men, the importance of early diagnosis and treatment. These interventions should occur in parallel with efforts to minimise excess HIV burden among women in the highest HIV burden countries that are contributing to excess HIV and tuberculosis coinfection burden for females. Placing a focus on tuberculosis burden among HIV-negative males and HIV and tuberculosis coinfection among females might help to diminish the overall burden of tuberculosis. This strategy will be crucial in reaching both equity and burden targets outlined by global health milestones. FUNDING Bill & Melinda Gates Foundation.
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Prakash V, Jain V, Chauhan SS, Parthasarathi R, Roy SK, Anbumani S. Developmental toxicity assessment of 4-MBC in Danio rerio embryo-larval stages. Sci Total Environ 2022; 804:149920. [PMID: 34509837 DOI: 10.1016/j.scitotenv.2021.149920] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [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: 04/24/2021] [Revised: 08/16/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Enormous production of cosmetic products and its indiscriminate use tends to discharge into the aquatic environment and might threaten non-target organisms inhabiting aquatic ecosystems. In the present study, developmental toxicity of 4-methylbenzylidene camphor (4-MBC), a widely used organic UV filter in personal care products has been evaluated using zebrafish embryo-larval stages. Waterborne exposure induced developmental toxicity and deduced 2.71 mg/L as 96 h LC50 whereas embryos exposed to sub-lethal concentrations (50 and 500 μg/L) caused a significant delay in hatching rate, heart rate, reduced larval length, and restricted hatchlings motility besides the axial curvature. Chronic exposure to 10 dpf resulted in significant decrease in SOD activity at 500 μg/L with no changes in CAT level besides a significant increase in GST enzyme at 5 μg/L concentration in 5 dpf sampled larvae. However, all the three enzymes were significantly elevated in 10 dpf larvae indicating differential oxidative stress during the stages of development. Similar trend is noticed for acetylcholine esterase enzyme activity. A concentration dependent increase in malondialdehyde content was noted in larvae sampled at 5 and 10 dpf. In addition, multixenobiotic resistance (MXR) activity inhibition, and elevated oxidative tissue damage were noticed at 5 dpf with no significant changes in 10 dpf larvae. Furthermore, immunoblot analysis confirms 4-MBC induced apoptosis in zebrafish larvae with promoted cleaved Caspase-3, Bax and inhibited Bcl-2 proteins expression. Subsequently, docking studies revealed the binding potential of 4-MBC to zebrafish Abcb4 and CYP450 8A1 proteins with the binding energy of -8.1 and -8.5 kcal/mol representing target proteins interaction and toxicity potentiation. Our results showed that 4-MBC exposure triggers oxidative stress at sub-lethal concentrations leading to apoptosis, deformities and locomotion perturbations in developing zebrafish.This is first of its kind in systematically demonstrating developmental toxicity of 4-MBC and the information shall be used for aquatic toxicity risk assessment.
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Affiliation(s)
- Ved Prakash
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Veena Jain
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shweta Singh Chauhan
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Somendu K Roy
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sadasivam Anbumani
- Ecotoxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, "Vishvigyan Bhawan", 31, Mahatma Gandhi Marg, P.O. Box No.80, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Singh P, Chauhan SS, Pandit S, Sinha M, Gupta S, Gupta A, Parthasarathi R. The dual role of phytochemicals on SARS-CoV-2 inhibition by targeting host and viral proteins. J Tradit Complement Med 2021; 12:90-99. [PMID: 34513611 PMCID: PMC8424525 DOI: 10.1016/j.jtcme.2021.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/05/2021] [Accepted: 09/06/2021] [Indexed: 12/26/2022] Open
Abstract
Background The severe acute respiratory syndrome-2019 has affected more than 190 million people around the world and caused severe crises throughout the globe. Due to rapid mutation in the viral genome, its became important to simultaneously improvise the host immunity while targeting viral proteins to reduce the severity of infection. Aim The current computational work focuses on multi-level rigorous screening of 47 medicinal plant-based phytochemicals for discovering effective phytochemical inhibitors against the host and viral targets. Experimental procedure A total of 586 phytochemicals were analyzed in detail based on their drug-likeness, pharmacological properties, and structure-based activity against the viral proteins (Spike glycoprotein, Papain-like protease, and Main protease) and host proteins (ACE2, Importin-subunit α-5, and β-1). Phytochemicals showing higher binding affinity with the dual capacity to target both the categories of proteins were further analyzed by profiling of their chemical reactivity using Density-Functional Theory (DFT) based quantum chemical methods. Finally, detailed molecular dynamics simulations were performed to analyze the interactions of the complexes. Results and conclusion The results revealed that the selected phytochemicals from Andrographis paniculata, Aconitum heterophyllum, Costus speciosus and Inula racemosa may have the capacity to act with prominent affinity towards the host and viral proteins. Therefore, the combination of active phytochemicals of these plants may prove to be more beneficial and can be used for developing the potential phytotherapeutic intervention. COVID-19 caused severe crisis throughout the globe. Current drug discovery efforts are targeting SARS-CoV-2 viral and host proteins using repurposed drugs. Screening of 586 phytochemicals from 47 medicinal plants against both the host as well as viral targets. Phytochemicals probably acts by inhibiting specific targets, thus help in reducing SARS-CoV-2 infection.
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Affiliation(s)
- Prakrity Singh
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Shweta Singh Chauhan
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Shraddha Pandit
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Meetali Sinha
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Shristee Gupta
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Anshika Gupta
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
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Padmanabhan J, Arif Z, Singh P, Parthasarathi R. Chemical Reactivity and Skin Sensitization Studies on a Series of Chloro- and Fluoropyrroles-A Computational Approach. ACS Omega 2021; 6:21514-21524. [PMID: 34471754 PMCID: PMC8388083 DOI: 10.1021/acsomega.1c02436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Global density functional descriptors analysis on a series of chloro- and fluoropyrroles provide vital data concerning their overall biochemical activities. In this study, a comprehensive investigation is presented for a series of chloro- and fluoropyrroles using DFT-based descriptors to elucidate physicochemical properties and their relevance to reactivity, charge transfer, site selectivity, and toxicity. Electrophilicity-based charge transfer (ECT) descriptor reveals the fact that chloro- and fluoropyrroles act as electron donors during their interaction with DNA bases. The local descriptor, namely, multiphilic descriptor conveys the activeness of specific sites in chloro- and fluoropyrroles. Further, Toxicity Prediction Komputer Assisted Technology (TOPKAT) studies on carcinogenicity bioassays using four rodent models provide the interesting fact that chloro- and fluoropyrroles exhibit a strong skin sensitization effect in these species.
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Affiliation(s)
- Jaganathan Padmanabhan
- Department
of Physics, Government Arts College for
Men (Autonomous), Nandanam, Chennai 600035, Tamilnadu, India
| | - Zeeshan Arif
- Computational
Toxicology Facility, CSIR-Indian Institute
of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Prakrity Singh
- Computational
Toxicology Facility, CSIR-Indian Institute
of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Computational
Toxicology Facility, CSIR-Indian Institute
of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
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18
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Baskaran R, Chauhan SS, Parthasarathi R, Mogili NS. In silico investigation and assessment of plausible novel tyrosinase inhibitory peptides from sesame seeds. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111619] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Sinha M, Gupta A, Gupta S, Singh P, Pandit S, Chauhan SS, Parthasarathi R. Analogue discovery of safer alternatives to HCQ and CQ drugs for SAR-CoV-2 by computational design. Comput Biol Med 2021; 130:104222. [PMID: 33535144 PMCID: PMC7817420 DOI: 10.1016/j.compbiomed.2021.104222] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 12/16/2022]
Abstract
COVID-19 outbreak poses a severe health emergency to the global community. Due to availability of limited data, the selection of an effective treatment is a challenge. Hydroxychloroquine (HCQ), a chloroquine (CQ) derivative administered for malaria and autoimmune diseases, has been shown to be effective against both Severe Acute Respiratory Syndrome (SARS-CoV-1) and SARS-CoV-2. Apart from the known adverse effects of these drugs, recently the use of CQ and HCQ as a potential treatment for COVID-19 is under flux globally. In this study, we focused on identifying a more potent analogue of HCQ and CQ against the spike protein of SAR-CoV-2 that can act as an effective antiviral agent for COVID-19 treatment. Systematic pharmacokinetics, drug-likeness, basicity predictions, virtual screening and molecular dynamics analysis (200 ns) were carried out to predict the inhibition potential of the analogous compounds on the spike protein. This work identifies the six potential analogues, out of which two compounds, namely 1-[1-(6-Chloroquinolin-4-yl) piperidin-4-yl]piperidin-3-ol and (1R,2R)-2-N-(7-Chloroquinolin-4-yl)cyclohexane-1,2-diamine interact with the active site of the spike protein similar to HCQ and CQ respectively with augmented safety profile.
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Affiliation(s)
- Meetali Sinha
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Anshika Gupta
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Shristee Gupta
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Prakrity Singh
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Shraddha Pandit
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Shweta Singh Chauhan
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India,Corresponding author. Computational Toxicology Facility, CSIR- Indian Institute of Toxicology Research, Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
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20
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Pandit S, Singh P, Sinha M, Parthasarathi R. Integrated QSAR and Adverse Outcome Pathway Analysis of Chemicals Released on 3D Printing Using Acrylonitrile Butadiene Styrene. Chem Res Toxicol 2021; 34:355-364. [PMID: 33416328 DOI: 10.1021/acs.chemrestox.0c00274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Additive manufacturing commonly known as 3D printing has numerous applications in several domains including material and biomedical technologies and has emerged as a tool of capabilities by providing fast, highly customized, and cost-effective solutions. However, the impact of the printing materials and chemicals present in the printing fumes has raised concerns about their adverse potential affecting humans and the environment. Thus, it is necessary to understand the properties of the chemicals emitted during additive manufacturing for developing safe and biocompatible fibers having controlled emission of fumes including its sustainable usage. Therefore, in this study, we have developed a computational predictive risk-assessment framework on the comprehensive list of chemicals released during 3D printing using the acrylonitrile butadiene styrene (ABS) filament. Our results showed that the chemicals present in the fumes of the ABS-based fiber used in additive manufacturing have the potential to lead to various toxicity end points such as inhalation toxicity, oral toxicity, carcinogenicity, hepatotoxicity, and teratogenicity. Moreover, because of their absorption, distribution in the body, metabolism, and excretion properties, most of the chemicals exhibited a high absorption level in the intestine and the potential to cross the blood-brain barrier. Furthermore, pathway analysis revealed that signaling like alpha-adrenergic receptor signaling, heterotrimeric G-protein signaling, and Alzheimer's disease-amyloid secretase pathway are significantly overrepresented given the identified target proteins of these chemicals. These findings signify the adversities associated with 3D printing fumes and the necessity for the development of biodegradable and considerably safer fibers for 3D printing technology.
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Affiliation(s)
- Shraddha Pandit
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prakrity Singh
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Meetali Sinha
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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21
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Nayak SK, Parthasarathi R, Gupta GHVR, Palanivelu C. Laparoscopic approach in cholecystogastric fistula with cholecystectomy and omental patching: A case report and review. J Minim Access Surg 2021; 17:245-248. [PMID: 32964876 PMCID: PMC8083744 DOI: 10.4103/jmas.jmas_87_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Cholecystoenteric fistulas are rare complications of cholelithiasis, with cholecystogastric fistulas (CGFs) being the rarest. Recommended treatment is surgery; however, select asymptomatic patients can be managed conservatively. The population frequently involved is old age with multiple comorbidities. Open surgery comes with its added morbidities, especially in this subgroup and hence laparoscopic surgery might be beneficial. Sometimes, these fistulas can be incomplete. Here, we describe a case of incomplete CGF managed by laparoscopic cholecystectomy and omental patching along with a brief review of the literature.
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Affiliation(s)
| | - R Parthasarathi
- GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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22
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23
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Abstract
Processing and packaging food has greatly exaggerated the use of food additives in different types of food products. Safety assessment to determine the pharmacokinetic and toxicological properties of food additives is imperative and experimentally challenging. Several resources of food additives properties have been collated; however, information remains partial, scattered, and not readily accessible, particularly for food safety. To address the concern related to the potential health hazard of food additives, we have developed the Food-Additive-Consumption-Safety Database (FOCUS-DB). Presently, the database comprises 2885 food additives, distributed into 18 categories with 40,800 collected data points, 89,435 predicted data points, and 14,425 external links. The dynamic web interface of the FOCUS-DB resource enables a risk assessment of additives, their approval status in various regulatory authorities, physicochemical properties, acceptable daily intake, GHS signals, biological pathways, predicted pharmacokinetic parameters, and various toxicity endpoint values. FOCUS-DB supports the exploration of food additives; it is beneficial for both the regulatory authorities and industries to optimize the usage limits of the additives and formulations. This database is a promising tool that helps understand the relationship between food additives and toxicity, which could be used to develop a future food safety framework.
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Affiliation(s)
- Shweta Singh Chauhan
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Deepak Kumar Sachan
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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24
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Nayak SK, Parthasarathi R, G H V RG, Rajapandian S, Palanisamy NV, Palanivelu C. Laparoscopic iliopubic tract repair for pediatric inguinal hernia has very low recurrence: an Indian experience. World Jnl Ped Surgery 2020; 3:e000150. [PMID: 36475271 DOI: 10.1136/wjps-2020-000150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/25/2020] [Accepted: 07/30/2020] [Indexed: 11/03/2022] Open
Abstract
BackgroundThe aim of this study is to document results of laparoscopic iliopubic tract (IPT) repair for inguinal hernia in the pediatric age group.MethodsHospital records of 190 children who underwent IPT repair between January 2015 and January 2020 were analyzed retrospectively for demographic details, variations between clinical, radiological and laparoscopic diagnosis, associated pathologies, operative time, hospital stay, postoperative complications and follow-up. The internal ring was narrowed by approximating IPT to conjoint tendon using 3-0 polypropylene continuous or interrupted suture.ResultsIn total, 238 IPT repairs were done under general anesthesia in 190 children aged between 1 and 17 years. 7.9% of children had phimosis, and three children had hydrocele. Three patients had undescended testis and another three IPT repairs were done in cases who presented with appendicitis. Contralateral patent processus vaginalis (CPPV) was detected at the time of laparoscopy in 18.3% of cases. Thus far, 166 children had been followed, and no recurrence was observed in any of these 96 of whom have completed more than 3 years after their surgery. However, two patients developed hernia on the contralateral side.ConclusionsLaparoscopy is beneficial to pick up CPPV. Laparoscopic IPT repair for pediatric inguinal hernia is reproducible and safe with the least recurrence reported thus far. However, further follow-up is needed. Moreover, development of contralateral hernia needs to be investigated.
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Prakhar G, Parthasarathi R, Cumar B, Subbaiah R, Nalankilli VP, Praveen Raj P, Palanivelu C. Extended View: Totally Extra Peritoneal (e-TEP) Approach for Ventral and Incisional Hernia-Early results from a single center. Surg Endosc 2020; 35:2005-2013. [PMID: 32347388 DOI: 10.1007/s00464-020-07595-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 04/22/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND Laparoscopy for ventral hernia repair is now an established technique with its proven benefits of less pain, early recovery, low-recurrence rate as compared to open repair. Several techniques have been described such as IPOM, MILOS, TES, EMILOS, SCOLA, e-TEP. e-TEP was originally conceptualized as an alternative approach to inguinal hernia in difficult cases (obese, previous scars) and for training surgery residents. Application of this approach for ventral hernia repair has recently been reported by few surgeons. We present our experience of e-TEP approach for ventral hernia from a tertiary care center in South India over one year duration. MATERIALS AND METHODS Electronically maintained data of patients who underwent e-TEP for ventral hernia during a period of November 2017 to November 2018 was reviewed retrospectively. Their demographic data, intraoperative details, postoperative complications and follow up data for a period of 6 months was noted. RESULTS 171 patients underwent e-TEP approach ventral hernia repair. Mean age was 49.34 ± 10.75 years with hypertension being most common comorbidity. Mean BMI was 29.2 ± 4.1 kg/m2. Mean defect area was 51.35 ± 45.09 cm2 and mean mesh size used was 397.56 ± 208.83 cm2. Fifty patients required TAR. Mean duration of surgery was 176.75 ± 62.42 min and blood loss was 78.7 ± 24.4 ml. Mean length of stay was 2.18 ± 1.27 days. Seven cases had paralytic ileus, 5 cases had surgical site infection, and 3 cases had recurrence at 6 months follow up. CONCLUSION e-TEP is a minimally invasive approach which is safe, feasible and also avoids placement of mesh in peritoneal cavity. Since it is a relatively new approach it requires further studies for standardization of techniques, criteria for patient selection and to study long-term outcomes.
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Affiliation(s)
- Gupta Prakhar
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India.
| | | | - Bharath Cumar
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India
| | - Rajapandian Subbaiah
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India
| | - V P Nalankilli
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India
| | - P Praveen Raj
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India
| | - Chinnusamy Palanivelu
- GEM Hospital and Research Center, 45 Pankaja Mills Road, Coimbatore, Tamil Nadu, 641045, India
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Stavila V, Foster ME, Brown JW, Davis RW, Edgington J, Benin AI, Zarkesh RA, Parthasarathi R, Hoyt DW, Walter ED, Andersen A, Washton NM, Lipton AS, Allendorf MD. IRMOF-74( n)-Mg: a novel catalyst series for hydrogen activation and hydrogenolysis of C-O bonds. Chem Sci 2019; 10:9880-9892. [PMID: 32015812 PMCID: PMC6977460 DOI: 10.1039/c9sc01018a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 02/28/2019] [Accepted: 09/02/2019] [Indexed: 12/15/2022] Open
Abstract
Metal-Organic Frameworks (MOFs) that catalyze hydrogenolysis reactions are rare and there is little understanding of how the MOF, hydrogen, and substrate molecules interact. In this regard, the isoreticular IRMOF-74 series, two of which are known catalysts for hydrogenolysis of aromatic C-O bonds, provides an unusual opportunity for systematic probing of these reactions. The diameter of the 1D open channels can be varied within a common topology owing to the common secondary building unit (SBU) and controllable length of the hydroxy-carboxylate struts. We show that the first four members of the IRMOF-74(Mg) series are inherently catalytic for aromatic C-O bond hydrogenolysis and that the conversion varies non-monotonically with pore size. These catalysts are recyclable and reusable, retaining their crystallinity and framework structure after the hydrogenolysis reaction. The hydrogenolysis conversion of phenylethylphenyl ether (PPE), benzylphenyl ether (BPE), and diphenyl ether (DPE) varies as PPE > BPE > DPE, consistent with the strength of the C-O bond. Counterintuitively, however, the conversion also follows the trend IRMOF-74(III) > IRMOF-74(IV) > IRMOF-74(II) > IRMOF-74(I), with little variation in the corresponding selectivity. DFT calculations suggest the unexpected behavior is due to much stronger ether and phenol binding to the Mg(ii) open metal sites (OMS) of IRMOF-74(III), resulting from a structural distortion that moves the Mg2+ ions toward the interior of the pore. Solid-state 25Mg NMR data indicate that both H2 and ether molecules interact with the Mg(ii) OMS and hydrogen-deuterium exchange reactions show that these MOFs activate dihydrogen bonds. The results suggest that both confinement and the presence of reactive metals are essential for achieving the high catalytic activity, but that subtle variations in pore structure can significantly affect the catalysis. Moreover, they challenge the notion that simply increasing MOF pore size within a constant topology will lead to higher conversions.
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Affiliation(s)
- Vitalie Stavila
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Michael E Foster
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Jonathan W Brown
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ryan W Davis
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Jane Edgington
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Annabelle I Benin
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ryan A Zarkesh
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - Ramakrishnan Parthasarathi
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
| | - David W Hoyt
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Eric D Walter
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Amity Andersen
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Nancy M Washton
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Andrew S Lipton
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , USA
| | - Mark D Allendorf
- Chemistry, Combustion, and Materials Center , Sandia National Laboratories , Livermore , California 94551 , USA . ;
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Sinha M, Dhawan A, Parthasarathi R. In Silico Approaches in Predictive Genetic Toxicology. Methods Mol Biol 2019; 2031:351-373. [PMID: 31473971 DOI: 10.1007/978-1-4939-9646-9_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Genetic toxicology testing is a weight-of-evidence approach to identify and characterize chemical substances that can cause genetic modifications in somatic and/or germ cells. Prediction of genetic toxicology using computational tools is gaining more attention and preferred by regulatory authorities as an alternate safety assessment for in vivo or in vitro approaches. Due to the cost and time associated with experimental genetic toxicity tests, it is essential to develop more robust in silico methods to predict chemical genetic toxicity. A number of in silico genotoxicity predictive tools/models are developed based on the experimental data gathered over the years. These in silico tools are divided into statistical quantitative structure-activity relationships (QSAR)-based approaches and expert-based systems. This chapter covers the state of the art in silico toxicology approaches and standardized protocols, essential for conducting genetic toxicity predictions of chemicals. This chapter also highlights various parameters for the validation of the prediction results obtained from QSAR models.
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Affiliation(s)
- Meetali Sinha
- Computational Toxicology Facility, Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Alok Dhawan
- Nanomaterials Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Ramakrishnan Parthasarathi
- Computational Toxicology Facility, Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India.
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Praveen Raj P, Bhattacharya S, Saravana Kumar S, Parthasarathi R, Cumar B, Palanivelu C. Morbid obesity with ventral hernia: is concomitant bariatric surgery with laparoscopic ventral hernia mesh repair the best approach? An experience of over 150 cases. Surg Obes Relat Dis 2019; 15:1098-1103. [DOI: 10.1016/j.soard.2019.04.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 03/28/2019] [Accepted: 04/16/2019] [Indexed: 11/26/2022]
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Kesavan S, Parthasarathi R, Gupta P, Palanivelu C. Laparoscopic management of epidermoid cyst in an unusual location. BMJ Case Rep 2019; 12:12/2/e228043. [PMID: 30765447 DOI: 10.1136/bcr-2018-228043] [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] [Indexed: 11/04/2022] Open
Abstract
The pararectal space or presacral space is a potential site for various cysts and tumours because it consists of many types of embryonic tissues. Although epidermoid cyst is a well-known entity, encountering a pararectal epidermoid cyst is relatively rare. The incidence of cystic tumours in the pararectal space has been reported to be 1 in 40 000 to 63 000 patients. Most of the tumours are asymptomatic and are incidentally discovered during routine imaging studies. Herein, we report a case of pararectal epidermoid cyst in a 51-year-old woman which was managed laparoscopically in a gastroenterology institute in South India.
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Affiliation(s)
- Sindhuja Kesavan
- Pathology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | | | - Prakhar Gupta
- Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Chinnusamy Palanivelu
- Minimally Invasive and G.I. Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Chittawadagi B, Senthilnathan P, Jankar SV, Sabnis SC, Parthasarathi R, Palanivelu C. Laparoscopic Roux-en Y duodenojejunostomy: A safe and physiological treatment for symptomatic annular pancreas in adults. J Minim Access Surg 2019; 16:121-125. [PMID: 30618433 PMCID: PMC7176005 DOI: 10.4103/jmas.jmas_245_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background: Annular pancreas is a rare, congenital, rotational anomaly of pancreas, seen usually in newborns who present with features of duodenal obstruction. However, in adults, only 24% of cases are present with duodenal obstruction. Surgery remains the procedure of choice in patients in whom symptoms can be attributed to duodenal obstruction and the goal of surgery is to relieve obstruction by bypassing the annulus. Laparoscopic Roux-en Y duodenostomy (DJ) is our preferred bypass approach for this condition. Literature search revealed that very few case reports have been published about laparoscopic management of annular pancreas, especially about duodenojejunal anastomosis. We present our experience in the laparoscopic management of symptomatic annular pancreas in adults and technique of the laparoscopic Roux-en Y DJ for annular pancreas. Materials and Methods: Between 1996 and 2016, a total of six adult patients underwent laparoscopic management for symptomatic annular pancreas. The demographic, perioperative and follow-up details were documented. Results: All surgeries were successfully performed by laparoscopic approach with no conversion to open. Five cases underwent Roux-en Y DJ and one underwent gastrojejunostomy. No major perioperative events occurred. The mean length of hospital stay was 5.6 days. Five out of six patients were followed up for 24 months, and no symptom recurrence was seen. Conclusion: Laparoscopic Roux-en Y duodenojejunostomy could be used as a safe and physiological treatment for annular pancreas in adult patients and should be preferred for the treatment of duodenal obstruction due to annular pancreas.
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Affiliation(s)
- Bhushan Chittawadagi
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Palanisamy Senthilnathan
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Samrat V Jankar
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Sandeep C Sabnis
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Ramakrishnan Parthasarathi
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Chinnusamy Palanivelu
- Department of Surgical Gastroenterology and HPB Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Nalini S, Inbakandan D, Venkatnarayanan S, Mohammed Riyaz SU, Dheenan PS, Vinithkumar NV, Sriyutha Murthy P, Parthasarathi R, Kirubagaran R. PYRROLO isolated from marine sponge associated bacterium Halobacillus kuroshimensis SNSAB01 - Antifouling study based on molecular docking, diatom adhesion and mussel byssal thread inhibition. Colloids Surf B Biointerfaces 2019; 173:9-17. [PMID: 30261347 DOI: 10.1016/j.colsurfb.2018.09.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/16/2018] [Accepted: 09/19/2018] [Indexed: 10/28/2022]
Abstract
In the present study, an attempt has been made to explore the antifouling potential of bioactive compound isolated from sponge associated bacterium Halobacillus kuroshimensis SNSAB01. The crude extract of SNSAB01 strongly inhibited the growth of fouling bacterial strains with least minimal inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The bioactive compound was characterized through FT-IR, HPLC, GCMS and NMR predicted as 'pyrrolo". From the mass spectral library, structure was elucidated as pyrrolo [1, 2-a] pyrazine-1, 4-dione, hexahydro. The in silico studies provided encouraging docking scores with two interactions by GLN 200 and GLU 304. The extract inhibited 89% diatom adhesion at 350 μg/ml concentration against Amphora sp. An EC50 value of 150 μg/ml for 50% inhibition of byssal thread of Perna viridis and LC50 was found to be 500 μg/ml. The LC50/EC50 ratio of 3.0 indicated nontoxic to nature. The result suggested that pyrrolo[1,2-a]pyrazine-1,4-dione can be used for antifouling coating.
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Affiliation(s)
- S Nalini
- Centre for Ocean Research, Col. Dr. Jeppiaar Research Park, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - D Inbakandan
- Centre for Ocean Research, Col. Dr. Jeppiaar Research Park, Sathyabama Institute of Science and Technology, Chennai, 600119, India.
| | - S Venkatnarayanan
- Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam, 603102, India
| | - S U Mohammed Riyaz
- Centre for Ocean Research, Col. Dr. Jeppiaar Research Park, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - P S Dheenan
- ATAL Centre for Ocean Science & Technology for Islands, National Institute of Ocean Technology, Ministry of Earth Sciences, Govt. of India, Port Blair, India
| | - N V Vinithkumar
- ATAL Centre for Ocean Science & Technology for Islands, National Institute of Ocean Technology, Ministry of Earth Sciences, Govt. of India, Port Blair, India
| | - P Sriyutha Murthy
- Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam, 603102, India
| | - R Parthasarathi
- Department of Microbiology, Faculty of Agriculture, Annamalai University, Annamalai Nagar, 608002, TamilNadu, India
| | - R Kirubagaran
- Marine Biotechnology Division, National Institute of Ocean Technology, Ministry of Earth Sciences, Govt. of India, Chennai 600 100, India
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Pradhan U, Karmakar N, Saha I, Ray S, Parthasarathi R, Sinha R. Overweight and obesity among adults in rural Bengal: A community-based cross-sectional study. CHRISMED J Health Res 2019. [DOI: 10.4103/cjhr.cjhr_6_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Singh M, Bittner S, Li Y, Bittner A, Han L, Cortez Y, Inayathullah M, Arif Z, Parthasarathi R, Rajadas J, Shen WJ, Nicolls MR, Kraemer FB, Azhar S. Anti-hyperlipidaemic effects of synthetic analogues of nordihydroguaiaretic acid in dyslipidaemic rats. Br J Pharmacol 2018; 176:369-385. [PMID: 30374952 DOI: 10.1111/bph.14528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 09/07/2018] [Accepted: 10/03/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE Previous studies have shown that Creosote bush-derived nordihydroguaiaretic acid (NDGA) exerts beneficial actions on the key components of metabolic syndrome including dyslipidaemia, insulin resistance and hypertension in several relevant rodent models. Here, we synthesized and screened a total of 6 anti-hyperlipidaemic analogues of NDGA and tested their efficacy against hepatic lipid metabolism in a high-fructose diet (HFrD) fed dyslipidaemic rat model. EXPERIMENTAL APPROACH HFrD fed Sprague-Dawley rats treated with NDGA or one of the six analogues were used. Serum samples were analysed for blood metabolites, whereas liver samples were quantified for changes in various mRNA levels by real-time RT-PCR. KEY RESULTS Oral gavage of HFrD-fed rats for 4 days with NDGA analogues 1 and 2 (100 mg·kg-1 ·day-1 ) suppressed the hepatic triglyceride content, whereas the NDGA analogues 2, 3 and 4, like NDGA, decreased the plasma triglyceride levels by 70-75%. qRT-PCR measurements demonstrated that among NDGA analogues 1, 2, 4 and 5, analogue 4 was the most effective at inhibiting the mRNA levels of some key enzymes and transcription factors involved in lipogenesis. All four analogues almost equally inhibited the key genes involved in triglyceride synthesis and fatty acid elongation. Unlike NDGA, none of the analogues affected the genes of hepatic fatty acid oxidation or transport. CONCLUSIONS AND IMPLICATIONS Our data suggest that NDGA analogues 1, 2, 4 and 5, particularly analogue 4, exert their anti-hyperlipidaemic actions by negatively targeting genes of key enzymes and transcription factors involved in lipogenesis, triglyceride synthesis and fatty acid elongation. These analogues have therapeutic potential.
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Affiliation(s)
- Madhurima Singh
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
| | - Stefanie Bittner
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Yihang Li
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
| | - Alex Bittner
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Lu Han
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
| | - Yuan Cortez
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | | | - Zeeshan Arif
- Computational Toxicology Facility, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | | | - Jayakumar Rajadas
- Division of Cardiovascular Pharmacology CVI, BioADD Laboratory, Stanford, CA, USA
| | - Wen-Jun Shen
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
| | - Mark R Nicolls
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Pulmonary and Critical Care Medicine, Stanford University, Stanford, CA, USA
| | - Fredric B Kraemer
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
| | - Salman Azhar
- Geriatric Research, Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA, USA.,Division of Endocrinology, Gerontology and Metabolism, Standford, CA, USA
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Raj PP, Bhattacharya S, Kumar SS, Parthasarathi R, Palanivelu C. Concomitant intraperitoneal onlay mesh repair with endoscopic component separation and sleeve gastrectomy. J Minim Access Surg 2018; 14:256-258. [PMID: 29226882 PMCID: PMC6001292 DOI: 10.4103/jmas.jmas_147_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 11/04/2017] [Indexed: 11/26/2022] Open
Abstract
Bariatric surgery can be safely combined with laparoscopic intraperitoneal onlay mesh (IPOM) repair. In case of large ventral hernias, laparoendoscopic component separation can also be combined to achieve tension-free closure of the defect. Concomitant bariatric surgery and hernia repair also offer the additional benefit of reduction in recurrence of hernias as obesity, one of the risk factors, is treated in the process. We present a case of 60-year-old man with a body mass index of 45.3 kg/m2 with a large recurrent ventral hernia. We performed a lap sleeve gastrectomy with laparoendoscopic anterior component separation with IPOM. The operative steps included hernia contents reduction, conventional sleeve gastrectomy, anterior component separation on either side, intra-corporeal closure of hernia defect and placement of a composite mesh. Patient recovery was uneventful. Concomitant bariatric surgery with laparoendoscopic component separation with IPOM may be safe, but more studies are required.
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Affiliation(s)
- P. Praveen Raj
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Siddhartha Bhattacharya
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - S. Saravana Kumar
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - R. Parthasarathi
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - C. Palanivelu
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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35
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Praveen Raj P, Bhattacharya S, Saravana Kumar S, Sabnis SC, Parthasarathi R, Swamy PDK, Palanivelu C. Do Bariatric Surgery-Related Type 2 Diabetes Remission Predictors Add Clinical Value? A Study on Asian Indian Obese Diabetics. Obes Surg 2018; 27:2113-2119. [PMID: 28236254 DOI: 10.1007/s11695-017-2615-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Bariatric surgery has emerged to be the most effective treatment strategy for the treatment of obesity and type 2 diabetes mellitus (T2DM) achieving high remission rates. Many factors have been evaluated with a potential to predict the improvement of glycemic control following bariatric procedures. This study aims to study the various predictive factors for T2DM and the ABCD score in obese diabetic patients undergoing bariatric surgery in a South Indian population. METHODS A total of 53 obese patients (BMI > 30 k/m2) with T2DM who underwent laparoscopic sleeve gastrectomy (LSG) and laparoscopic gastric bypass (LGB) from March 2014 to March 2015 were selected for the study. The patients were followed up to study the effects of various predictors of T2DM remission at 1 year. RESULTS Out of the 53 patients, 35 (66%) underwent LSG and 18 (34%) underwent LGB. Patients (81.1%) had T2DM remission. Mean HbA1c values decreased from 8.07 ± 1.98 to 6.0 ± 0.71. Only higher pre-operative body weight (p = 0.04) and lower HbA1c level (p = 0.04) were significantly associated with T2DM remission. Higher absolute weight loss (p = 0.03) after surgery was also significantly associated with T2DM remission. ABCD score was not significantly associated with T2DM remission although patients with ABCD score higher than 7 demonstrated 100% remission rate. CONCLUSION Among all the factors, only higher pre-operative weight and better glycaemic control along with better post-operative weight loss were significantly associated with the remission of T2DM. Although not significantly associated with remission of T2DM, higher ABCD scores had higher likelihood of remission.
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Affiliation(s)
- P Praveen Raj
- GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India.
| | | | | | | | - R Parthasarathi
- GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | | | - C Palanivelu
- GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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36
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Praveen Raj P, Bhattacharya S, Parthasarathi R, Senthilnathan P, Rajapandian S, Saravana Kumar S, Palanivelu C. Evolution and Standardisation of Techniques in Single-Incision Laparoscopic Bariatric Surgery. Obes Surg 2017; 28:574-583. [PMID: 29164509 DOI: 10.1007/s11695-017-3036-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Bariatric surgery has proven benefits for morbid obesity and its associated comorbidities. Laparoscopic approach is well established for bariatric surgery. Single-incision laparoscopic surgery (SILS) offers even more minimally invasive approach for the same with the added advantage of better cosmesis. We have developed and standardised the SILS approach at our institute. We share our experience and technical "tips" and modifications which we have learnt over the years. Technical details of performing sleeve gastrectomy and Roux-en-Y gastric bypass with special attention to liver retraction, techniques of dissection in difficult areas, creation of anastomoses and suturing have all been described. In our experience and in experience of others, single-incision bariatric surgery is feasible. Use of conventional laparoscopic instruments makes single-incision approach practical for day-to-day practice. Supervised training is essential to learn these techniques.
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Affiliation(s)
- P Praveen Raj
- GEM Hospital and Research Centre, Coimbatore, India.
| | | | | | | | | | | | - C Palanivelu
- GEM Hospital and Research Centre, Coimbatore, India
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Senthilnathan P, Dhaker KC, Kaje V, Naidu SB, Sarvani M, Sabnis SC, Srivatsan Gurumurthy S, Nalakilli VP, Anand Vijay N, Rajapandian S, Praveen Raj P, Parthasarathi R, Palanivelu C. Laparoscopic management of solid pseudo papillary neoplasm of pancreas in tertiary care center from south India. Pancreatology 2017; 17:927-930. [PMID: 29054814 DOI: 10.1016/j.pan.2017.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 08/26/2017] [Accepted: 09/08/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Solid pseudo papillary neoplasm (SPN) of the pancreas which predominantly affects young women is a relatively indolent entity with favorable prognosis. Resection through minimal access approach helps to achieve better short term benefits. The aim of this study is to describe our experience in laparoscopic management of this disease. METHODS A retrospective review of our prospectively maintained database revealed that 17 patients with SPN were managed with surgical resection between March 2009 and October 2016. The clinical data of these patients were then analyzed. RESULTS Among the 17 cases of SPN, 14 were females and 3 were males. The mean age at presentation was 26.1 years (11-46 years). The most common presenting symptom was an abdominal pain (n = 10; 58.8%). A tumor was incidentally detected in 5 patients. The neoplasm was localized in the pancreatic head/neck in 6 patients and in the body/tail in 11. The median diameter of the tumors was 7.5 cm (2-13 cm). Five patients underwent pancreaticoduodenectomy, 10 had distal pancreatectomy, while median pancreatectomy or enucleation was performed in one each. All the patients were offered laparoscopic surgery; one distal pancreatectomy was converted to open in view of bleeding. The median length of stay was 7 days (5-28 days). The patients were followed up for a median period of 31 months (3-62 months). CONCLUSION SPN is a rare neoplasm with low malignant potential and has an excellent prognosis. In our experience, laparoscopic surgical resection is safe and feasible, even for larger lesions.
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Affiliation(s)
- Palanisamy Senthilnathan
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Kailash Chandra Dhaker
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India.
| | - Vivek Kaje
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Subrahmaneswara Babu Naidu
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - M Sarvani
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Sandeep C Sabnis
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | | | - V P Nalakilli
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Natesan Anand Vijay
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Subbaiah Rajapandian
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Palanivelu Praveen Raj
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Ramakrishnan Parthasarathi
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
| | - Chinnusamy Palanivelu
- Department of Gastrointestinal & HPB Surgery, GEM Hospital and Research Center, Coimbatore, Tamil Nadu, 641045, India
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Rajapandian S, Jankar SV, Chittawadgi B, Bhattacharya S, Sabnis SC, Sathyamoorthy R, Parthasarathi R, Senthilnathan P, Raj PP, Palanivelu C. Laparoscopic excision of rare case of recurrent presacral teratoma. J Minim Access Surg 2017; 13:315-317. [PMID: 28872101 PMCID: PMC5607803 DOI: 10.4103/0972-9941.199213] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Tumours of the presacral space are rare to present. Most of them are benign masses, very rarely malignant. Surgery is the mainstay of treatment as it establishes the diagnosis and prevents the adverse consequences associated with malignant degeneration and secondary bacterial infection. Their surgical excision is often difficult because of their anatomic location. Very few cases have been reported so far concerning a laparoscopic management of presacral tumour. We hereby present a young girl with recurrent presacral teratoma. She underwent laparoscopic successful excision of tumour with uneventful post-operative recovery. Here, we are highlighting the importance of laparoscopic approach for this scenario in terms additional advantages of minimally invasive approach such as better visualisation of the deep structures in the narrow presacral space, precise dissection in a limited space between the tumour and neighbouring structures with avoiding injury to neurovascular structure.
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Affiliation(s)
- S Rajapandian
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Samrat V Jankar
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Bhushan Chittawadgi
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Siddhartha Bhattacharya
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Sandeep C Sabnis
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - R Sathyamoorthy
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - R Parthasarathi
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - P Senthilnathan
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - P Praveen Raj
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - C Palanivelu
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Praveen Raj P, Bhattacharya S, Kumar SS, Sabnis SC, Parthasarathi R, Kumara Swamy PD, Palanivelu C. Non-alcoholic steatohepatitis (NASH) and metabolic surgery in Asia. Ann Laparosc Endosc Surg 2017. [DOI: 10.21037/ales.2017.08.04] [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: 11/06/2022]
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40
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Rajapandian S, Jankar SV, Nayak DS, Chittawadgi B, Sabnis SC, Sathyamoorthy R, Parthasarathi R, Senthilnathan P, Raj PP, Palanivelu C. Laparoscopic management of 'Y-shaped' gallbladder duplication with review of literature. J Minim Access Surg 2017; 13:231-233. [PMID: 28607295 PMCID: PMC5485817 DOI: 10.4103/0972-9941.199611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Gallbladder duplication is a rare congenital malformation that occurs in about 1:4000 cases. Congenital anomalies of the gallbladder and anatomical variations of their position are associated with an increased risk of complications during laparoscopic cholecystectomy. We report a case of gallbladder duplication with symptomatic cholelithiasis, who presented with recurrent episodes of biliary colic and subsequently underwent laparoscopic cholecystectomy with intraoperative cholangiography. We also discussed in brief about the available literature support in relation to incidence of this disorder, imaging modalities used, intraoperative strategies and recommended measures for safe outcomes.
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Affiliation(s)
- S Rajapandian
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Samrat V Jankar
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Darshan S Nayak
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Bhushan Chittawadgi
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Sandeep C Sabnis
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - R Sathyamoorthy
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - R Parthasarathi
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - P Senthilnathan
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - P Praveen Raj
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - C Palanivelu
- Department of Minimal Invasive Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Parthasarathi R, Gomes RM, Palanivelu PR, Senthilnathan P, Rajapandian S, Venkatachalam R, Palanivelu C. First Virtual Live Conference in Healthcare. J Laparoendosc Adv Surg Tech A 2016; 27:722-725. [PMID: 27652991 DOI: 10.1089/lap.2016.0339] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Conferences and meetings bring together thousands of doctors from diverse locations. However, the traveling, accommodation, and arrangement of venues for conferences and meetings are expensive and a lot of time needs to be devoted to these logistics. The purpose of this article was to present our own virtual live conference experience using web conferencing and to briefly outline the basics and advantages of this technology in organization of healthcare conferences. METHODS Web conferencing technology was used to organize an international bariatric surgery conference, allowing a large number of attendees to participate and interact from wherever they were, using merely an Internet connection with a video player on their personal computers, laptops, or smartphones. RESULTS A virtual live conference saves a lot of time and cost and simplifies the logistics needed to organize a learning conference with worldwide participation. CONCLUSION As far as we know, this is the first report of a virtual live conference in healthcare. We see it as the future of organizing experts as well as medical teaching conferences.
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Affiliation(s)
| | - Rachel M Gomes
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre , Coimbatore, India
| | - Praveen Raj Palanivelu
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre , Coimbatore, India
| | | | - Subbiah Rajapandian
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre , Coimbatore, India
| | - Ramasamy Venkatachalam
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre , Coimbatore, India
| | - Chinnusamy Palanivelu
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre , Coimbatore, India
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Praveenraj P, Gomes RM, Kumar S, Senthilnathan P, Parthasarathi R, Rajapandian S, Palanivelu C. Management of gastric leaks after laparoscopic sleeve gastrectomy for morbid obesity: A tertiary care experience and design of a management algorithm. J Minim Access Surg 2016; 12:342-9. [PMID: 27251808 PMCID: PMC5022516 DOI: 10.4103/0972-9941.181285] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is the most commonly performed ‘standalone’ bariatric procedure in India. Staple line gastric leaks occur infrequently but cause significant and prolonged morbidity. The aim of this retrospective study was to analyse the management of patients with a gastric leak after LSG for morbid obesity at our institution. PATIENTS AND METHODS: From February 2008 to 2014, 650 patients with different degrees of morbid obesity underwent LSG. Among these, all those diagnosed with a gastric leak were included in the study. Patients referred to our institution with gastric leak after LSG were also included. The time of presentation, site of leak, investigations performed, treatment given and time of closure of all leaks were analysed. RESULTS: Among the 650 patients who underwent LSG, 3 (0.46%) developed a gastric leak. Two patients were referred after LSG was performed at another institution. The mean age was 45.60 ± 15.43 years. Mean body mass index (BMI) was 44.79 ± 5.35. Gastric leak was diagnosed 24 h to 7 months after surgery. One was early, two were intermediate and two were late leaks. Two were type I and three were type II gastric leaks. Endoscopic oesophageal stenting was used variably before or after re-surgery. Re-surgery was performed in all and included stapled fistula excision (re-sleeve), suture repair only or with conversion to roux-en-Y gastric bypass or fistula jujenostomy. There was no mortality. CONCLUSION: Leakage closure time may be shorter with intervention than expectant management. Sequence and choice of endoscopic oesophageal stenting and/or surgical re-intervention should be individualized according to clinical presentation.
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Affiliation(s)
- Palanivelu Praveenraj
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Rachel M Gomes
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Saravana Kumar
- Department of Bariatric Surgery, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Palanisamy Senthilnathan
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Ramakrishnan Parthasarathi
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Subbiah Rajapandian
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Chinnusamy Palanivelu
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Parthasarathi R, Sun J, Dutta T, Sun N, Pattathil S, Murthy Konda NVSN, Peralta AG, Simmons BA, Singh S. Activation of lignocellulosic biomass for higher sugar yields using aqueous ionic liquid at low severity process conditions. Biotechnol Biofuels 2016; 9:160. [PMID: 27486479 PMCID: PMC4969646 DOI: 10.1186/s13068-016-0561-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/12/2016] [Indexed: 05/02/2023]
Abstract
BACKGROUND Concerns around greenhouse gas emissions necessitate the development of sustainable processes for the production of chemicals, materials, and fuels from alternative renewable sources. The lignocellulosic plant cell walls are one of the most abundant sources of carbon for renewable bioenergy production. Certain ionic liquids (ILs) are very effective at disrupting the plant cell walls of lignocellulose, and generate a substrate that is effectively hydrolyzed into fermentable sugars. Conventional ILs are relatively expensive in terms of purchase price, and the most effective imidazolium-based ILs also require energy intensive processing conditions (>140 °C, 3 h) to release >90 % fermentable sugar yields after saccharification. RESULTS We have developed a highly effective pretreatment technology utilizing the relatively inexpensive IL comprised tetrabutylammonium [TBA](+) and hydroxide [OH](-) ions that generate high glucose yields (~95 %) after pretreatment at very mild processing conditions (50 °C). The efficiency of [TBA][OH] pretreatment of lignocellulose was further studied by analyzing chemical composition, powder X-ray diffraction for cellulose structure, NMR and SEC for lignin dissolution/depolymerization, and glycome profiling for cell wall modifications. Glycome profiling experiments and computational results indicate that removal of the noncellulosic polysaccharides occurs due to the ionic mobility of [TBA][OH] and is the key factor in determining pretreatment efficiency. Process modeling and energy demand analysis suggests that this [TBA][OH] pretreatment could potentially reduce the energy required in the pretreatment unit operation by more than 75 %. CONCLUSIONS By leveraging the benefits of ILs that are effective at very mild processing conditions, such as [TBA][OH], lignocellulosic biomass can be pretreated at similar efficiency as top performing conventional ILs, such as 1-ethyl-3-methylimidazolium acetate [C2C1Im][OAc], but at much lower temperatures, and with less than half the IL normally required to be effective. [TBA][OH] IL is more reactive in terms of ionic mobility which extends removal of lignin and noncellulosic components of biomass at the lower temperature pretreatment. This approach to biomass pretreatment at lower temperatures could be transformative in the affordability and energy efficiency of lignocellulosic biorefineries.
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Affiliation(s)
- Ramakrishnan Parthasarathi
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
- Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA USA
| | - Jian Sun
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
- Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA USA
| | - Tanmoy Dutta
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
- Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA USA
| | - Ning Sun
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
| | - Sivakumar Pattathil
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
- Oak Ridge National Laboratory, The BioEnergy Science Center, Oak Ridge, TN 37831 USA
| | | | - Angelo Gabriel Peralta
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
- Oak Ridge National Laboratory, The BioEnergy Science Center, Oak Ridge, TN 37831 USA
| | - Blake A. Simmons
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
- Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA USA
| | - Seema Singh
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, CA 94608 USA
- Sandia National Laboratories, Biological and Engineering Sciences Center, Livermore, CA USA
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Praveenraj P, Gomes RM, Kumar S, Perumal S, Senthilnathan P, Parthasarathi R, Rajapandian S, Palanivelu C. Comparison of weight loss outcomes 1 year after sleeve gastrectomy and Roux-en-Y gastric bypass in patients aged above 50 years. J Minim Access Surg 2016; 12:220-5. [PMID: 27279392 PMCID: PMC4916747 DOI: 10.4103/0972-9941.183481] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
INTRODUCTION: Safe, effective weight loss with resolution of comorbidities has been convincingly demonstrated with bariatric surgery in the aged obese. They, however, lose less weight than younger individuals. It is not known if degree of weight loss is influenced by the choice of bariatric procedure. The aim of this study was to compare the degree of weight loss between laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB) in patients above the age of 50 years at 1 year after surgery. MATERIALS AND METHODS: A retrospective analysis was performed of all patients more than 50 years of age who underwent LSG or LRYGB between February 2012 and July 2013 with at least 1 year of follow-up. Data evaluated at 1 year included age, sex, weight, body mass index (BMI), mean operative time, percentage of weight loss and excess weight loss, resolution/remission of diabetes, morbidity and mortality. RESULTS: Of a total of 86 patients, 54 underwent LSG and 32 underwent LRYGB. The mean percentage of excess weight loss at the end of 1 year was 60.19 ± 17.45 % after LSG and 82.76 ± 34.26 % after LRYGB (P = 0.021). One patient developed a sleeve leak after LSG, and 2 developed iron deficiency anaemia after LRYGB. The remission/improvement in diabetes mellitus and biochemistry was similar. CONCLUSION: LRYGB may offer better results than LSG in terms of weight loss in patients over 50 years of age.
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Affiliation(s)
- Palanivelu Praveenraj
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Rachel M Gomes
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Saravana Kumar
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Sivalingam Perumal
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Palanisamy Senthilnathan
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | | | - Subbiah Rajapandian
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
| | - Chinnusamy Palanivelu
- Department of Bariatric Surgery, Gem Hospital and Research Centre, Coimbatore, Tamil Nadu, India
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Praveenraj P, Gomes RM, Kumar S, Karthikeyan P, Shankar A, Parthasarathi R, Senthilnathan P, Rajapandian S, Palanivelu C. Prevalence and Predictors of Non-Alcoholic Fatty Liver Disease in Morbidly Obese South Indian Patients Undergoing Bariatric Surgery. Obes Surg 2016; 25:2078-87. [PMID: 25835982 DOI: 10.1007/s11695-015-1655-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Numerous studies worldwide have identified a high prevalence of non-alcoholic fatty liver disease (NAFLD) among morbidly obese subjects. Several predictors have been found to be associated with NAFLD and its histological high-risk components. Similar data from India is lacking. We aimed to determine the prevalence and the predictors of NAFLD and its histological high-risk components in a cohort of Indians with morbid obesity undergoing bariatric surgery. Safety of a routine intraoperative liver biopsy was also assessed. METHODS There were 134 morbidly obese patients who underwent bariatric surgery with concomitant liver biopsy. These were assessed for NAFLD and its histological high-risk components. Clinical, biochemical, and histological features were evaluated, and predictors of NAFLD, non-alcoholic steatohepatitis (NASH), fibrosis, and advanced fibrosis were identified. RESULTS Mean BMI was 44.66 ± 9.81. Eighty-eight (65.7 %) showed NAFLD. Forty-five (33.6 %) showed NASH and 42 (31.3 %) showed fibrosis both not mutually exclusive. Nineteen (14.1 %) showed advanced fibrosis. Higher alanine aminotransferase (ALT) independently predicted NAFLD and was significantly associated with NASH and fibrosis. Type 2 diabetes mellitus (T2DM) and the metabolic syndrome were significantly associated with fibrosis. Systemic hypertension (HT) independently predicted NASH and fibrosis. There were no intraoperative or postoperative complications related to the liver biopsy. CONCLUSIONS NAFLD has a high prevalence among morbidly obese patients. Elevated ALT, HT, T2DM, and the metabolic syndrome are predictors for NAFLD and its high-risk histological components. Routine intraoperative liver biopsy is safe in morbidly obese undergoing bariatric surgery for diagnosing NAFLD.
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Affiliation(s)
- Palanivelu Praveenraj
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | - Rachel M Gomes
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | - Saravana Kumar
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | | | - Annapoorni Shankar
- Department of Pathology, Gem Hospital and Research Centre, Coimbatore, 641045, India.
| | - Ramakrishnan Parthasarathi
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | - Palanisamy Senthilnathan
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | - Subbiah Rajapandian
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
| | - Chinnusamy Palanivelu
- Department of Minimal Access Surgery, Gem Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India.
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Parthasarathi R, Gomes RM, Rajapandian S, Sathiamurthy R, Praveenraj P, Senthilnathan P, Palanivelu C. Ligation of the intersphincteric fistula tract for the treatment of fistula-in-ano: experience of a tertiary care centre in South India. Colorectal Dis 2016; 18:496-502. [PMID: 26476011 DOI: 10.1111/codi.13162] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 08/01/2015] [Indexed: 12/24/2022]
Abstract
AIM Ligation of the intersphincteric fistula tract (LIFT) is a new sphincter-sparing surgical technique increasingly used to treat fistulae-in-ano yielding good results. The aim of this study was to evaluate its effectiveness in the treatment of complex fistulae-in-ano and to determine factors associated with recurrence and its subsequent management. METHOD A prospective observational study was performed of 167 patients with complex fistula-in-ano treated by LIFT from June 2013 to January 2014. In all patients a LIFT with partial core-out of the fistula tract was performed. RESULTS There were 167 patients of mean age 43.6 ± 12.8 years. Thirty-three fistulae were recurrent. 150 were trans-sphincteric, 16 were intersphincteric and one was a suprasphincteric fistula. The median postoperative stay was 2 (range: 1-14) days (mean = 2.4 days). At follow up there was no change in continence. The median healing time was 4 (range: 1-8) weeks. Two patients developed an intersphincteric abscess needing surgical drainage healing uneventfully. The mean follow up was 12.8 [median = 12 (range: 4-22)] months. The healing rate was 94.1%. Ten (5.9%) patients developed a recurrent fistula that was managed by a second LIFT procedure in seven, a sinus tract excision with curettage in two and seton placement in one. Recurrence was significantly associated with diabetes mellitus and perianal collections and showed an increased incidence with tract abscesses and multiple tracts. CONCLUSION LIFT has a high success rate in complex fistulae-in-ano. Recurrence is related to diabetes mellitus, perianal collections, tract abscesses and multiple tracts and a second LIFT procedure may be feasible and efficient.
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Affiliation(s)
- R Parthasarathi
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - R M Gomes
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - S Rajapandian
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - R Sathiamurthy
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - P Praveenraj
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - P Senthilnathan
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
| | - C Palanivelu
- Department of Surgical Gastroenterology, GEM Hospital and Research Centre, Coimbatore, India
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Praveenraj P, Gomes RM, Kumar S, Senthilnathan P, Parthasarathi R, Rajapandian S, Palanivelu C. Management of Type 2 Late Sleeve Leak by Laparoscopic Suturing and Conversion to Roux-en-Y Gastric Bypass: Video Report. Obes Surg 2016. [PMID: 26208410 DOI: 10.1007/s11695-015-1813-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Laparoscopic sleeve forming gastrectomy (SFG) is a commonly performed bariatric procedure for the surgical management of morbid obesity. Staple line gastric leaks occur infrequently but are the most feared complication causing prolonged morbidity (Burgos et al., Obes Surg 19(12):1672-7, 2009; Márquez et al., Obes Surg 20(9):1306-11, 2010). Roux-en-Y diversion is an accepted management (Baltasar et al., Surg Obes Relat Dis 4(6):759-63, 2008). The aim of this video was to demonstrate the operative management of a late sleeve leak by laparoscopic suturing & conversion to a RYGB. METHODS We present the case of an 18-year-old woman with a BMI of 44.68 kg/m(2) with hypothyroidism and polycystic ovarian disease who underwent laparoscopic sleeve gastrectomy and presented with a leak on postoperative day 13. She was diagnosed to have a type 2, late leak just beyond the esophagogastric junction (Csendes et al., Hepatogastroenterology 37 Suppl 2:174-7, 1990) RESULTS: In this multimedia high-definition video, we present step-by-step the operative management of a late sleeve leak by laparoscopic suturing and conversion to a RYGB. Procedure included mobilization of the gastric sleeve, identification and suturing of the fistulous opening, creation of a gastric pouch, creation of an ante-colic Roux limb, gastrojejunal anastomosis and jejuno-jejunal anastomosis. Drainage of fistula gradually decreased with absence of a leak on imaging in 12 days. This patient was diagnosed with a gastric sleeve leak on the 13th postoperative day, and the time to fistula closure from diagnosis was 1 month. CONCLUSIONS Sleeve leak fistula repair with conversion to a RYGB aids healing by providing surgical decompression and better drainage. It may be considered as an alternative management technique in sleeve leaks.
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Affiliation(s)
- Palanivelu Praveenraj
- Department of Bariatric Surgery, GEM Hospital and Research Centre, 45, Pankaja Mill Road, Coimbatore, 641045, India,
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Abstract
The Tamil Nadu model of public health is renowned for its success in providing quality health services at an affordable cost especially to the rural people. Tamil Nadu is the only state with a distinctive public health cadre in the district level and also the first state to enact a Public Health Act in 1939. Tamil Nadu has gained significant ground in the various aspects of health in the last few decades largely because of the significant reforms in its health sector which dates back to 1980s which saw rigorous expansion of rural health infrastructure in the state besides deployment of thousands of multipurpose health workers as village health nurses in rural areas. Effective implementation of Universal Immunization Programme, formation of Tamil Nadu Medical Services Corporation for regulating the drug procurement and promoting generic drugs, early incorporation of indigenous system of medicine into health care service, formulation of a health policy in 2003 by the state with special emphasis on low-income, disadvantaged communities alongside efficient implementation of The Tamil Nadu Health Systems Project (TNHSP) are the major factors which contributed for the success of the state. The importance of good political commitment and leadership in the health gains of the state warrants special mention. Moreover, the economic growth of the state, improved literacy rate, gender equality, and lowered fertility rate in the last few decades and contributions from the private sector have their share in the public health success of the state. In spite of some flaws and challenges, the Tamil Nadu Model remains the prototype health care delivery system in resource-limited settings which can be emulated by other states also toward a better health care delivery system.
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Affiliation(s)
- R Parthasarathi
- Department of Community Medicine, Dhanalakshmi Srinivasan Medical College, Siruvachur, Tamil Nadu, India
| | - S P Sinha
- Department of Community Medicine, Dhanalakshmi Srinivasan Medical College, Siruvachur, Tamil Nadu, India
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Nalini S, Parthasarathi R, Prabudoss V. Production and characterization of lipopeptide from Bacillus cereus SNAU01 under solid state fermentation and its potential application as anti-biofilm agent. Biocatalysis and Agricultural Biotechnology 2016. [DOI: 10.1016/j.bcab.2016.01.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Stavila V, Parthasarathi R, Davis RW, El Gabaly F, Sale KL, Simmons BA, Singh S, Allendorf MD. MOF-Based Catalysts for Selective Hydrogenolysis of Carbon–Oxygen Ether Bonds. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02061] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vitalie Stavila
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Ramakrishnan Parthasarathi
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Joint BioEnergy
Institute, 5885 Hollis Street, Emeryville, California 94608, United States
| | - Ryan W. Davis
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Farid El Gabaly
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Kenneth L. Sale
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Joint BioEnergy
Institute, 5885 Hollis Street, Emeryville, California 94608, United States
| | - Blake A. Simmons
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Joint BioEnergy
Institute, 5885 Hollis Street, Emeryville, California 94608, United States
| | - Seema Singh
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Joint BioEnergy
Institute, 5885 Hollis Street, Emeryville, California 94608, United States
| | - Mark D. Allendorf
- Sandia National
Laboratories, 7011 East Avenue, Livermore, California 94550, United States
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