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Singh P, Pandey P, Arya DK, Anjum MM, Poonguzhali S, Kumar A, Gupta R, Rajamanickam VM, Singh S, Chaurasia S, Dantuluri AK, Mcmahon S, Rajinikanth PS. Biomimicking dual drug eluting twisted electrospun nanofiber yarns for post-operative wound healing. Biomed Mater 2023; 18. [PMID: 36921352 DOI: 10.1088/1748-605x/acc4a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/15/2023] [Indexed: 03/17/2023]
Abstract
The morbidity rate following a surgical procedure increasing rapidly in the cases associated with surgical site infections. Traditional sutures lack the ability to deliver drugs as the incorporation of the drug in their structure would hamper their mechanical properties. To prevent such infections, we developed an extracellular matrix mimicking electrospun nanofibrous yarns of Poly-(D, L)-lactic acid and Polyvinyl alcohol loaded with Vancomycin and Ferulic Acid, prepared by uniaxial electrospinning technique. In-vitro characterization such as scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, tensile strength testing, degradation studies, and antimicrobial studies along with in-vivo evaluation done with help of incision wound healing rat model and simultaneous testing of microbial load in the incised tissue. The in-vitro studies indicated the nanofiber yarns have size range 200-300 nm with a tensile strength of 7.54±0.58 MPa. The dual drug-loaded yarn showed sustained drug release over a period of 48 hr. In-vitro water uptake and biodegradation data indicated optimum results suitable for suturing applications. Antimicrobial study showed excellent antimicrobial activity against both S. aureus and E. coli. Results obtained from in-vivo study suggested excellent wound healing potential of nanofiber yarns as compared with commercial silk sutures. The histopathological studies confirmed restoring ability of nanofiber yarn to the normal skin structure. ELISA study revealed the downregulation of inflammatory markers i.e. TNF-Alpha and IL-6, making nanofibers sutures suitable for surgical wound healing applications. Overall, the present study may conclude that the developed dual drug-loaded nanofiber yarns have excellent potential in surgical wound healing applications.
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Affiliation(s)
- Pragya Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | - Prashant Pandey
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | - Dilip Kumar Arya
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | - Md Meraj Anjum
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | - Subramaniam Poonguzhali
- Taylor's University Lakeside Campus, Kualamlupur, Malaysia, School of Pharmacy, Kualalumpur, 47500, MALAYSIA
| | - Abhishek Kumar
- Department of Microbiology, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | - Ravi Gupta
- Department of Microbiology, Babasaheb Bhimrao Ambedkar University, Lucknow, Lucknow, 226025, INDIA
| | | | - Sanjay Singh
- Department of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Varanasi, Lucknow, Uttar Pradesh, 226025, INDIA
| | - Sundeep Chaurasia
- Ashland Specialties Chemicals India Ltd, Telangana, Park, 500078, INDIA
| | | | - Sean Mcmahon
- Ashland Specialties Chemicals Ireland Ltd, Mullingar, Mullingar, N91A002, IRELAND
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Nath G, Kaur A, Chaurasia S. On the Blast Wave Propagation and Structure in a Rotational Axisymmetric Perfect Gas. Proc Natl Acad Sci , India, Sect A Phys Sci 2022. [DOI: 10.1007/s40010-021-00737-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Vaidya N, Sapkota P, Chaurasia S, Thapa B, Bhandari N, Bhattarai I. Diagnostic Accuracy of Drop Hydrogen Peroxide Test as a Novel Bedside Diagnostic Test to Differentiate Transudative and Exudative Pleural Effusion Against Light's Criteria. Kathmandu Univ Med J (KUMJ) 2022; 20:93-96. [PMID: 36273299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Background Diagnostic evaluation of pleural fluid according to Light's criteria to differentiate between exudative and transudative fluid takes 1 or 2 working days. For rapid clinical management, especially in critically ill patients, a simpler bedside diagnostic test can be done which has similar diagnostic accuracy as that of Light's Criteria. Objective To determine the diagnostic accuracy of Drop Hydrogen Peroxide test to differentiate exudative and transudative pleural effusion in comparison to Light's criteria. Method A concurrent validity test was performed using a convenient sampling technique including patients presenting to the Department of Internal Medicine from January to September 2021, who had pleural effusion. Two milliliters of tapped pleural fluid of patients who underwent aseptic thoracocentesis was collected in a test tube to which one to two drops of 20% hydrogen peroxide was added. Presence of bubbles suggested an exudative type of fluid. Rest of the tapped pleural fluid was sent to the laboratory for further evaluation by Light's criteria, which was compared with the results by Drop Hydrogen Peroxide Test. Result There were 83 patients who had pleural effusion, of them a total of 43 patients had transudative pleural effusion while 40 patients had exudative pleural effusion based on Light's criteria and 37 patients had transudative pleural effusion while 46 patients had exudative pleural effusion based on drop hydrogen peroxide test. Conclusion The drop hydrogen peroxide test allows cost effective and prompt evaluation of the type of pleural effusion is exudative or transudative, thereby making it a convenient diagnostic bedside test.
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Affiliation(s)
- N Vaidya
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
| | - P Sapkota
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
| | - S Chaurasia
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
| | - B Thapa
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
| | - N Bhandari
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
| | - I Bhattarai
- Department of Internal Medicine, Dhulikhel Hospital, Kathmandu University Hospital, Kathmandu University School of Medical Sciences, Dhulikhel, Kavre, Nepal
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Hasija R, Chaurasia S, Gupta S. Formulation design, optimization and in vivo evaluation of oral co-encapsulated resveratrol-humic acid colloidal polymeric nanocarriers. Pharm Dev Technol 2021; 26:953-966. [PMID: 34374616 DOI: 10.1080/10837450.2021.1966442] [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: 10/20/2022]
Abstract
The study aims at formulation and optimization of resveratrol and humic acid co-encapsulated colloidal polymeric nanocarriers to improve stability, oral bioavailability, and antiradical activity of water-insoluble, resveratrol. The eudragit E100 polymeric material was used to fabricate resveratrol and humic acid co-encapsulated oral colloidal polymeric nanocarriers (Res-HA-co-CPNs) using emulsification-diffusion-evaporation method. Taguchi orthogonal array design was employed to check the effect of formulation factors on in vitro physicochemical characteristics. The optimized formulation was further evaluated for oral bioavailability as well as for antiradical potential. Optimized Res-HA-co-CPNs demonstrated spherical and smooth surface including mean particle size, 120.56 ± 18.8 nm; polydispersity index, 0.122; zeta potential, +38.25 mV; and entrapment efficiency, 82.37 ± 1.49%. Solid-state characterization confirmed the amorphous characteristic of optimized Res-HA-co-CPNs. In vitro release profile of Res-HA-co-CPNs showed sustained release behavior up to 48 h and CPNs were found to remain stable at the refrigerated condition for 6 months. In vivo pharmacokinetic studies revealed significant (p < 0.05) improvement of ∼62.76-fold in oral bioavailability. The radical-scavenging activity was found to be increased with time and after 72 h, it was analogous to pure Res. IC50 values were reported to be decreased with time. Henceforth, developed Res-HA-co-CPNs was proven to be a proficient dosage form to increase stability, oral bioavailability, and antiradical activity of resveratrol.HighlightsResveratrol-humic acid co-encapsulated colloidal polymeric nanocarriers (Res-HA-co-CPNs) were fabricated by emulsification-diffusion-evaporation method and optimized by Taguchi orthogonal array design.The Res-HA-co-CPNs revealed favorable mean particle size and percent encapsulation efficiency with a spherical and smooth surface.The Res-HA-co-CPNs showed diffusion-controlled release of Res and were found to be stable at the refrigerated condition for 6 months.The optimized Res-HA-co-CPNs demonstrated significantly (p < 0.05) higher oral bioavailability with respect to pure Res and PM.The optimized Res-HA-co-CPNs demonstrated higher radical-scavenging activity with respect to time.
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Affiliation(s)
- Rahul Hasija
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida, India.,Formulation Research and Development, Mankind Research Centre, Gurgaon, India
| | - Sundeep Chaurasia
- Formulation Research and Development, Mankind Research Centre, Gurgaon, India.,Innovation and Pharma R&D, Ashland Specialty Ingredients, Shamirpet, India
| | - Swati Gupta
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida, India
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Hasija R, Chaurasia S, Gupta S. Assessment of Polymeric Nanoparticles to Enhance Oral Bioavailability and Antioxidant Activity of Resveratrol. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Chaurasia S, Reddy S. Design and Implementation of Data Collection & Analysis Tool for Healthcare Parameter Monitoring using Inverse Low Pass Filter. EAI Endorsed Transactions on Pervasive Health and Technology 2018. [DOI: 10.4108/eai.30-10-2018.160460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Chaubey P, Mishra B, Mudavath SL, Patel RR, Chaurasia S, Sundar S, Suvarna V, Monteiro M. Mannose-conjugated curcumin-chitosan nanoparticles: Efficacy and toxicity assessments against Leishmania donovani. Int J Biol Macromol 2018; 111:109-120. [DOI: 10.1016/j.ijbiomac.2017.12.143] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 11/21/2017] [Accepted: 12/27/2017] [Indexed: 02/07/2023]
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Chaurasia S, Patel RR, Vure P, Mishra B. Oral naringenin nanocarriers: Fabrication, optimization, pharmacokinetic and chemotherapeutic efficacy assessments. Nanomedicine (Lond) 2017; 12:1243-1260. [PMID: 28593828 DOI: 10.2217/nnm-2016-0436] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 02/04/2023] Open
Abstract
AIM To enhance oral bioavailability and chemotherapeutic efficacy of naringenin (NG) by fabricating the NG-encapsulated Soluthin-maltodextrin-based nanocarrier (NC) system. MATERIALS & METHODS NG-encapsulated nanocarriers (NG/NCs) were developed, and in vitro physicochemically characterized. Furthermore, Wistar rats were used to evaluate the pharmacokinetic profile. Furthermore, in vitro and in vivo colorectal cancer efficacy was evaluated in BALB/c mice-bearing colon-26 cells. RESULTS The NG/NCs demonstrated favorable mean particle size (176 ± 2.35 nm) and percent entrapment efficiency (70.83 ± 4.55%), respectively. The oral bioavailability was found to be approximately 116-fold higher and in vitro cytotoxicity exhibited approximately 21-fold reduction as compared with pure NG. Moreover, optimized NG/NCs demonstrated significant tumor suppression compared with pure NG in vivo. CONCLUSION The NG/NCs would be an efficient formulation for enhancing oral bioavailability and chemotherapeutic efficacy of NG.
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Affiliation(s)
- Sundeep Chaurasia
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, UP, INDIA.,Formulation Research & Development, Complex Generics Division, Virchow Biotech Pvt. Ltd, Survey No. 172 Part, Gagillapur Village, Quthbullapur Mandal, Ranga Reddy 500 043, Hyderabad, Telangana, India
| | - Ravi R Patel
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, UP, INDIA
| | - Prasad Vure
- Formulation Research & Development, Complex Generics Division, Virchow Biotech Pvt. Ltd, Survey No. 172 Part, Gagillapur Village, Quthbullapur Mandal, Ranga Reddy 500 043, Hyderabad, Telangana, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, UP, INDIA
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Chaurasia S, Patel RR, Vure P, Mishra B. Potential of Cationic-Polymeric Nanoparticles for Oral Delivery of Naringenin: In Vitro and In Vivo Investigations. J Pharm Sci 2017; 107:706-716. [PMID: 29031951 DOI: 10.1016/j.xphs.2017.10.006] [Citation(s) in RCA: 21] [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: 01/13/2017] [Revised: 09/26/2017] [Accepted: 10/02/2017] [Indexed: 02/02/2023]
Abstract
The objective of the study was to improve the bioavailability and anticancer potential of naringenin (NRG) by developing a drug-loaded polymeric nanodelivery system. NRG-loaded eudragit E100 nanoparticle (NRG-EE100-NPs) system was developed and physicochemically characterized. In vivo pharmacokinetic and in vitro cytotoxicity abilities of the NRG-EE100-NPs were investigated. In vivo anticancer activity was evaluated in murine BALB/c mice-bearing colorectal tumor. The NRG-EE100-NPs had an optimum mean particle size (430.42 ± 5.78 nm), polydispersity index (0.283 ± 0.089) with percent entrapment efficiency (68.83 ± 3.45%). The NRG-EE100-NPs demonstrated significant higher bioavailability (∼96-fold; p <0.05) as well as cytotoxicity (∼16-fold; p <0.001) as compared to free NRG. Furthermore, NRG-EE100-NPs indicated significant tumor suppression (p <0.01) subsequently improvement in survival rate compared to free NRG in vivo. Thus, the physicochemical properties and colorectal cancer efficacy of NRG were improved by successful encapsulating in cationic-polymeric nanoparticle system.
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Affiliation(s)
- Sundeep Chaurasia
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, Uttar Pradesh, India; Formulation Research and Development, Complex Generics Division, Virchow Biotech Pvt. Ltd., Survey No. 172 Part, Gagillapur (V), Quthbullapur (M), Ranga Reddy (Dist.), Hyderabad 500 043, Telangana, India
| | - Ravi R Patel
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, Uttar Pradesh, India
| | - Prasad Vure
- Formulation Research and Development, Complex Generics Division, Virchow Biotech Pvt. Ltd., Survey No. 172 Part, Gagillapur (V), Quthbullapur (M), Ranga Reddy (Dist.), Hyderabad 500 043, Telangana, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, Uttar Pradesh, India.
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Prasad V, Chaurasia S. Performance evaluation of non-ionic surfactant based tazarotene encapsulated proniosomal gel for the treatment of psoriasis. Materials Science and Engineering: C 2017. [DOI: 10.1016/j.msec.2017.05.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Chaurasia S, Mounika K, Bakshi V, Prasad V. 3-month parenteral PLGA microsphere formulations of risperidone: Fabrication, characterization and neuropharmacological assessments. Materials Science and Engineering: C 2017; 75:1496-1505. [DOI: 10.1016/j.msec.2017.03.065] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 12/23/2016] [Accepted: 03/09/2017] [Indexed: 12/16/2022]
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Phatak S, Chaurasia S, Mishra SK, Gupta R, Agrawal V, Aggarwal A, Misra R. Urinary B cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL): potential biomarkers of active lupus nephritis. Clin Exp Immunol 2016; 187:376-382. [PMID: 27804111 DOI: 10.1111/cei.12894] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2016] [Indexed: 12/23/2022] Open
Abstract
B cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL) help in B cell activation, maintenance and plasma cell survival. B cell infiltration has been demonstrated in kidneys of patients with lupus nephritis (LN). Serum levels of BAFF and APRIL have shown inconsistent relationships with lupus disease activity. We evaluated urinary levels of BAFF and APRIL as biomarker for LN. Thirty-six patients with proliferative lupus nephritis (AN), 10 with active lupus without nephritis (AL) and 15 healthy controls (HC) were studied. APRIL and BAFF levels were measured in both serum and urine using enzyme-linked immunosorbent assay (ELISA). Urine levels were normalized for urinary creatinine excretion. Urine levels were correlated with conventional disease activity markers and histology. Levels were reassessed in 20 AN patients at 6 months after treatment with cyclophosphamide. Urinary APRIL (uAPRIL) and BAFF (uBAFF) levels were raised significantly in AN. uAPRIL, but not uBAFF, correlated moderately with renal Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) in AN (r = 0·36, P < 0·05). On receiver operator curve (ROC) analysis, uBAFF and uAPRIL showed an area under the curve (AUC) of 0·825 and 0·781, respectively, in differentiating between nephritis and non-nephritis, which performed better than low C3, C4 and raised anti-dsDNA antibodies. There was no correlation of serum levels with uBAFF (r = 0·187, P = 0·261) and uAPRIL (r = 0·114, P = 0·494). uAPRIL levels reduced after treatment (mean 125 pg/mg to 36 pg/mg, P < 0·05). uBAFF levels reduced in 16 responders while two of four non-responders had increase in levels. Thus, uBAFF and uAPRIL are potential biomarkers of proliferative lupus nephritis.
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Affiliation(s)
- S Phatak
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - S Chaurasia
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - S K Mishra
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - R Gupta
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - V Agrawal
- Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - A Aggarwal
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
| | - R Misra
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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Mohan R, Gupta S, Sharma A, Anumanthan G, Sinha P, Fink M, Tripathi R, Raikwar S, Giuliano E, Rieger F, Hesemann N, Sinha N, Chaurasia S. Novel tissue-targeted localized gene therapy for corneal scarring and neovascularization. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chaurasia S, Shasany AK, Aggarwal A, Misra R. Recombinant Salmonella typhimurium outer membrane protein A is recognized by synovial fluid CD8 cells and stimulates synovial fluid mononuclear cells to produce interleukin (IL)-17/IL-23 in patients with reactive arthritis and undifferentiated spondyloarthropathy. Clin Exp Immunol 2016; 185:210-8. [PMID: 27060348 DOI: 10.1111/cei.12799] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/03/2016] [Accepted: 04/04/2016] [Indexed: 01/21/2023] Open
Abstract
In developing countries, one-third of patients with reactive arthritis (ReA) and undifferentiated spondyloarthropathy (uSpA) are triggered by Salmonella typhimurium. Synovial fluid mononuclear cells (SFMCs) of patients with ReA and uSpA proliferate to low molecular weight fractions (lmwf) of outer membrane proteins (Omp) of S. typhimurium. To characterize further the immunity of Omp of Salmonella, cellular immune response to two recombinant proteins of lmwf, OmpA and OmpD of S. typhimurium (rOmpA/D-sal) was assessed in 30 patients with ReA/uSpA. Using flow cytometry, 17 of 30 patients' SF CD8(+) T cells showed significant intracellular interferon (IFN)-γ to Omp crude lysate of S. typhimurium. Of these 17, 11 showed significantly more CD8(+) CD69(+) IFN-γ T cells to rOmpA-sal, whereas only four showed reactivity to rOmpD-sal. The mean stimulation index was significantly greater in rOmpA-sal than rOmpD-sal [3·0 (1·5-6·5) versus 1·5 (1·0-2·75), P < 0·005]. Similarly, using enzyme-linked immunospot (ELISPOT) in these 17 patients, the mean spots of IFN-γ-producing SFMCs were significantly greater in rOmpA-sal than rOmpD-sal [44·9 (3·5-130·7) versus 19·25 (6-41), P < 0·05]. SFMCs stimulated by rOmpA-sal produced significantly more proinflammatory cytokines than rOmpD-sal: IFN-γ [1·44 (0·39-20·42) versus 0·72 (0·048-9·15) ng/ml, P < 0·05], interleukin (IL)-17 [28·60 (6·15-510·86) versus 11·84 (6·83-252·62) pg/ml, P < 0·05], IL-23 [70·19 (15-1161·16) versus 28·25 (> 15-241·52) pg/ml, P < 0·05] and IL-6 [59·78 (2·03-273·36) versus 10·17 (0·004-190·19) ng/ml, P < 0·05]. The rOmpA-sal-specific CD8(+) T cell response correlated with duration of current synovitis (r = 0·53, P < 0·05). Thus, OmpA of S. typhimurium is a target of SF CD8(+) T cells and drives SFMC to produce increased cytokines of the IL-17/IL-23 axis which contribute to the pathogenesis of Salmonella-triggered ReA.
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Affiliation(s)
- S Chaurasia
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences
| | - A K Shasany
- Biotechnology Division, Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - A Aggarwal
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences
| | - R Misra
- Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences
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Patel RR, Chaurasia S, Khan G, Chaubey P, Kumar N, Mishra B. Highly water-soluble mast cell stabiliser-encapsulated solid lipid nanoparticles with enhanced oral bioavailability. J Microencapsul 2016; 33:209-20. [DOI: 10.3109/02652048.2016.1144819] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ravi R. Patel
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Sundeep Chaurasia
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Gayasuddin Khan
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Pramila Chaubey
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Nagendra Kumar
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
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Patel RR, Chaurasia S, Khan G, Chaubey P, Kumar N, Mishra B. Cromolyn sodium encapsulated PLGA nanoparticles: An attempt to improve intestinal permeation. Int J Biol Macromol 2016; 83:249-58. [DOI: 10.1016/j.ijbiomac.2015.11.084] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 11/09/2015] [Accepted: 11/29/2015] [Indexed: 12/17/2022]
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Kumar N, Chaurasia S, Patel RR, Khan G, Kumar V, Mishra B. Atorvastatin calcium loaded PCL nanoparticles: development, optimization, in vitro and in vivo assessments. RSC Adv 2016. [DOI: 10.1039/c5ra26674b] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The aim of the present study was to prepare atorvastatin calcium (ATR) loaded poly(ε-caprolactone) nanoparticles (ALPNs) to enhance the oral bioavailability, efficacy and safety profile of drugs.
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Affiliation(s)
- Nagendra Kumar
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Sundeep Chaurasia
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Ravi R. Patel
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Gayasuddin Khan
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Vikas Kumar
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
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Khan G, Patel RR, Yadav SK, Kumar N, Chaurasia S, Ajmal G, Mishra PK, Mishra B. Development, optimization and evaluation of tinidazole functionalized electrospun poly(ε-caprolactone) nanofiber membranes for the treatment of periodontitis. RSC Adv 2016. [DOI: 10.1039/c6ra22072j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The proposed work is focused to alleviate shortcomings in the treatment of periodontitis by electrospinning of a novel biodegradable poly(ε-caprolactone) based nanofiber membrane functionalized with tinidazole.
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Affiliation(s)
- Gayasuddin Khan
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Ravi R. Patel
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Sarita K. Yadav
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Nagendra Kumar
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Sundeep Chaurasia
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Gufran Ajmal
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Pradeep K. Mishra
- Department of Chemical Engineering
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
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Kharbanda OP, Chaurasia S. Functional jaw orthopedics for Class II malocclusion: Where do we stand today?∗. J Indian Orthod Soc 2015. [DOI: 10.4103/0301-5742.171198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- OP Kharbanda
- Professor and Head, Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
| | - S Chaurasia
- Former Postgraduate Student, Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
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Kharbanda OP, Chaurasia S. Functional jaw orthopedics for Class II malocclusion: Where do we stand today?∗. J Indian Orthod Soc 2015. [DOI: 10.1177/0974909820150507s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- OP Kharbanda
- Professor and Head, Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
| | - S Chaurasia
- Former Postgraduate Student, Division of Orthodontics and Dentofacial Deformities, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India
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Kumar N, Chaurasia S, Patel RR, Khan G, Kumar V, Mishra B. Atorvastatin calcium encapsulated eudragit nanoparticles with enhanced oral bioavailability, safety and efficacy profile. Pharm Dev Technol 2015; 22:156-167. [DOI: 10.3109/10837450.2015.1108983] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Nagendra Kumar
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Sundeep Chaurasia
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Ravi R. Patel
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Gayasuddin Khan
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Vikas Kumar
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
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Chaurasia S, Patel RR, Chaubey P, Kumar N, Khan G, Mishra B. Lipopolysaccharide based oral nanocarriers for the improvement of bioavailability and anticancer efficacy of curcumin. Carbohydr Polym 2015; 130:9-17. [DOI: 10.1016/j.carbpol.2015.04.062] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 03/28/2015] [Accepted: 04/25/2015] [Indexed: 12/19/2022]
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Chaurasia S, Chaubey P, Patel RR, Kumar N, Mishra B. Curcumin-polymeric nanoparticles against colon-26 tumor-bearing mice: cytotoxicity, pharmacokinetic and anticancer efficacy studies. Drug Dev Ind Pharm 2015; 42:694-700. [PMID: 26165247 DOI: 10.3109/03639045.2015.1064941] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [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: 01/19/2023]
Abstract
CONTEXT Curcumin (CUR), can inhibit proliferation and induce apoptosis of tumor cells, its extreme insolubility and limited bioavailability restricted its clinical application. OBJECTIVE An innovative polymeric nanoparticle of CUR has been developed to enhance the bioavailability and anti-cancer efficacy of CUR, in vitro and in vivo. MATERIALS AND METHODS Cationic copolymer Eudragit E 100 was selected as carrier, which can enhance properties of poor bioavailable chemotherapeutic drugs (CUR). The CUR-loaded Eudragit E 100 nanoparticles (CENPs) were prepared by emulsification-diffusion-evaporation method. The in vitro cytotoxicity study of CENPs was carried out using sulphorhodamine B assay. Pharmacokinetic and anti-cancer efficacy of CENPs was investigated in Wister rats as well as colon-26 tumor-bearing mice after oral administration. RESULTS CENPs showed acceptable particle size and percent entrapment efficiency. In vitro cytotoxicity studies in terms of 50% cell growth inhibition values demonstrated ∼19-fold reduction when treated with CENPs as compared to pure CUR. ∼91-fold increase in Cmax and ∼95-fold increase in AUC0-12h were observed indicating a significant enhancement in the oral bioavailability of CUR when orally administered as CENPs compared to pure CUR. The in vivo anti-cancer study performed with CENPs showed a significant increase in efficacy compared with pure CUR, as observed by tumor volume, body weight and survival rate. CONCLUSIONS The results clearly indicate that the developed polymeric nanoparticles offer a great potential to improve bioavailability and anticancer efficacy of hydrophobic chemotherapeutic drug.
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Affiliation(s)
- Sundeep Chaurasia
- a Department of Pharmaceutics , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh , India
| | - Pramila Chaubey
- a Department of Pharmaceutics , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh , India
| | - Ravi R Patel
- a Department of Pharmaceutics , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh , India
| | - Nagendra Kumar
- a Department of Pharmaceutics , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh , India
| | - Brahmeshwar Mishra
- a Department of Pharmaceutics , Indian Institute of Technology (Banaras Hindu University) , Varanasi , Uttar Pradesh , India
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Patel RR, Khan G, Chaurasia S, Kumar N, Mishra B. Rationally developed core–shell polymeric-lipid hybrid nanoparticles as a delivery vehicle for cromolyn sodium: implications of lipid envelop on in vitro and in vivo behaviour of nanoparticles upon oral administration. RSC Adv 2015. [DOI: 10.1039/c5ra12732g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the present study, cromolyn sodium, a highly water soluble molecule was encapsulated into rationally designed, core–shell polymeric-lipid hybrid nanoparticles for enhancing its oral bioavailability, by improving its intestinal permeability.
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Affiliation(s)
- Ravi R. Patel
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Gayasuddin Khan
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Sundeep Chaurasia
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Nagendra Kumar
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Brahmeshwar Mishra
- Department of Pharmaceutics
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
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Patel RR, Kumar N, Khan G, Chaurasia S, Mishra B. Investigation of Critical Variables of Core–Shell Polymer Lipid Hybrid Nanoparticles by Using Plackett-Burman Screening Design. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/asl.2014.5473] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kumar N, Chaurasia S, Patel RR, Kumar V, Mishra B. Development and Optimization of Atorvastatin Calcium Loaded Oral Biodegradable Polymeric Nanoparticles Using Central Composite Design. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/asl.2014.5483] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chaurasia S, Kumar N, Patel RR, Mishra B. Optimization of Parameters for the Fabrication of Curcumin Loaded Polymeric Nanoparticles Using Taguchi Robust Design. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/asl.2014.5478] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mallikarjuna K, Gupta S, Shukla S, Chaurasia S. Unusual extensive physiologic melanin pigmentation of the oral cavity: a clinical presentation. J Indian Soc Pedod Prev Dent 2013; 31:121-5. [PMID: 23886725 DOI: 10.4103/0970-4388.115718] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Pigmented lesions are commonly found in the oral cavity. Oral pigmentations may be physiological or pathological in nature. It may represent as a localized anomaly of limited significance or the presentation of potentially life threatening multisystem disease. Oral pigmentation has a multifactorial etiology. Most of the oral pigmentations are physiologic. Evaluation of a patient with pigmented lesions should include a full medical and dental history, extraoral and intraoral examinations. In this article, we report a case of extensive physiologic pigmentation of the oral cavity in a 12 year old female patient, posing a diagnostic challenge.
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Affiliation(s)
- K Mallikarjuna
- Department of Pedodontics and Preventive Dentistry, Hitkarini Dental College and Hospital, Hitkarini Hills, Dumna Road, Jabalpur-482 005, Madhya Pradesh, India
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Chaurasia S, Ramappa M, Garg P, Murthy SI, Senthil S, Sangwan VS. Endothelial keratoplasty in the management of irido-corneal endothelial syndrome. Eye (Lond) 2013; 27:564-6. [PMID: 23348727 DOI: 10.1038/eye.2012.298] [Citation(s) in RCA: 14] [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: 11/09/2022] Open
Abstract
PURPOSE To describe the results of endothelial keratoplasty (EK) in the management of irido-corneal endothelial (ICE) syndrome. DESIGN Retrospective, consecutive, interventional case series. METHODS Eight eyes of seven patients underwent EK for corneal edema owing to ICE syndrome. Simultaneous cataract surgery was performed in five eyes. The charts were reviewed for demographics, clinical findings, and outcomes after EK. RESULTS Mean age was 50.4 years (range 35-59 years). Mean follow-up was 12.5 months (range 6-24 months). Corneal clarity was restored in all eyes and was maintained till the last follow-up. Four patients had acute rise in the intraocular pressure in the post-operative period, which was well controlled on medical treatment. One patient who was non-compliant with medications and regular follow-up advice had progression of glaucomatous disc changes and visual field loss. The best-corrected visual acuity ranged from 20/50-20/30. CONCLUSIONS EK is a viable option in ICE syndrome. Adequate control of glaucoma is the paramount factor in maintaining good visual acuity in these eyes.
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Affiliation(s)
- S Chaurasia
- Cornea and Anterior Segment Services, LV Prasad Eye Institute, Hyderabad, India.
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Borisenko N, Chaurasia S, Dhareshwar L, Gromov A, Gupta N, Leshma P, Munda D, Orekhov A, Tripathi S, Merkuliev Y. Laser study into and explanation of the direct-indirect target concept. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135903014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Dhareshwar L, Chaurasia S, Manmohan K, Badziak J, Wolowski J, Kasperczuk A, Pisarczyk T, Ryc L, Rosinski M, Parys P, Pisarczyk P, Ullschmidt J, Krousky E, Masek K. Particle size effect on velocity of gold particle embedded laser driven plastic targets. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20135903015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chaurasia S, Vaddavalli PK, Ramappa M, Garg P, Sangwan VS. Clinical profile of graft detachment and outcomes of rebubbling after Descemet stripping endothelial keratoplasty. Br J Ophthalmol 2011; 95:1509-12. [DOI: 10.1136/bjophthalmol-2011-300155] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chaurasia S, Muralidhar R, Das S, Vaddavalli PK, Garg P, Gopinathan U. Pseudomonas keratitis with satellite lesions: an unusual presentation. Br J Ophthalmol 2010; 94:1409-10. [PMID: 20516141 DOI: 10.1136/bjo.2009.172171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Affiliation(s)
- Y B Tripathi
- Biochemistry Section, Department of Medicinal Chemistry, Institute of Medical Sciences,Banaras Hindu University, Varanasi-221005, India
| | - S Chaurasia
- Biochemistry Section, Department of Medicinal Chemistry, Institute of Medical Sciences,Banaras Hindu University, Varanasi-221005, India
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Hegazy H, Allam SH, Chaurasia S, Dhareshwar L, El-Sherbini TM, Kunze HJ, Mank G, McDaniel DH, Rosinski M, Ryc L, Stewart B, Wolowski J, Abd El-Ghany H, Abd El-Latif G, Abd El-Rahim FM, Bedrane Z, Diab F, Farrag A, Hedwig R, Helal A, Pardede M, Refaie A, Sharkawy H, Sir El-khatim A, Varandas C, Sliva C. Joint Experiments on X-ray∕Particle Emission from Plasmas Produced by Laser Irradiating Nano Structured Targets. AIP Conference Proceedings 2008. [DOI: 10.1063/1.2917018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Abstract
In this paper, it has been investigated that strychnine, the major active principle in the alcoholic extract of the seeds of Strychnos nux-vomica, is responsible for its antilipid peroxidative property. The mechanism of action of this drug is through the chelation of the free iron in the system. It has also been observed that strychnine does not have any pro-oxidant-property, because it does not convert Fe3+ to Fe2+ and vice versa in the reaction system, as has been observed with several other antioxidants.
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Affiliation(s)
- Y B Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
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Tripathi YB, Chaurasia S, Tripathi E, Upadhyay A, Dubey GP. Bacopa monniera Linn. as an antioxidant: mechanism of action. Indian J Exp Biol 1996; 34:523-6. [PMID: 8792640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Bacopa monniera, Linn. (Brahmi: Scrophulariaceae) an Ayurvedic medicine is clinically used for memory enhancing, epilepsy, insomnia and as mild sedative. For the first time the effect of alcohol and hexane fraction of Brahmi has been studied on FeSO4 and cumene hydroperoxide induced lipid peroxidation. Alcohol fraction showed greater protection with both inducers. Results were compared with known antioxidants tris, EDTA and a natural-antioxidant vitamin E. The effect of Brahmi was also examined on hepatic glutathione content. The mechanism of action could be through metal chelation at the initiation level and also as chain breaker. The results suggested that Brahmi is a potent antioxidant. The response of Brahmi was dose dependent. Tris, an hydroxyl trapper did not show any protection in comparison to Brahmi where as EDTA and vitamin E did protect against FeSO4. In experimental conditions 100 micrograms Brahmi extract (alcoholic) was equivalent to 247 micrograms of EDTA (0.66 microM) and 58 micrograms of vitamin E. Interestingly Brahmi only slightly protected the autooxidation and FeSO4 induced oxidation of reduced glutathione on lower doses 100 micrograms/ml and below, but on higher concentrations it enhanced the rate of oxidation.
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Affiliation(s)
- Y B Tripathi
- Department of Medicinal Chemistry, Banaras Hindu University, Varanasi, India
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Chaurasia S, Tripathi P, Tripathi YB. Antioxidant and anti-inflammatory property of Sandhika: a compound herbal drug. Indian J Exp Biol 1995; 33:428-32. [PMID: 7590949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present study was envisaged to assess the rationality for the use of "Sandhika", a popular Ayurvedic drug in rheumatoid arthritis. This drug, when tested against carrageenan induced paw oedema and cotton pellet granuloma, showed significant anti-inflammatory activity at the dose of 0.25 g/kg body weight. The antioxidant property was assessed by determining cumene hydroperoxide (CHP) induced lipid peroxidation and reduced glutathione content in rat liver homogenate (in vitro). Experiments show the significant protection against lipid peroxidation at the dose of 80 micrograms/ml, measured as reduction in the level of malondialdehyde (MDA) induced by 1.5 mM cumene hydroperoxide (CHP). This effect was accompanied by the maintained reduced glutathione (GSH) content in drug treated rats. Oral treatment of drug up to 2 g/kg body weight for 15 days did not show any rise in serum transaminases (SGOT and SGPT). The results suggest that "Sandhika" which is an indigenous drug for inflammation with no detectable adverse effect, might be acting through scavenging the free radicals.
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Affiliation(s)
- S Chaurasia
- Department of Medicinal Chemistry, Banaras Hindu University, Varanasi, India
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Chaturvedi P, Shukla S, Tripathi P, Chaurasia S, Singh S, Tripathi Y. Comparative study of Inula Racemosa and Saussurea Lappa on the glucose level in Albino rats. Anc Sci Life 1995; 15:62-70. [PMID: 22556722 PMCID: PMC3331181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/1995] [Accepted: 05/11/1995] [Indexed: 11/10/2022] Open
Abstract
Inula racemosa and Saussurea lappa have been used in ayurvedic system for the management of diabetes. The result of this communication concludes that I. racemosa reduces the blood glucose earlier as compared to S. lappa. Maximum response in case of I. racemosa is noted between 2 to 4 hours after drug administration while for S. lappa while for S. lappa, it is 4 to 8 hours. S. lappa can be used as substitute for I. racemosa for the management of diabetes, but it should not be taken for granted that this substitution should be applicable to all other systems, where I. racemosa has been recommended as a drug of choice.
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Affiliation(s)
- P. Chaturvedi
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
| | - S. Shukla
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
| | - P. Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
| | - S. Chaurasia
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
| | - S.K. Singh
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
| | - Y.B. Tripathi
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi – 221 005, India
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