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Yadav AK, Tripathi H, Rajput S, Singh P, Dubey AK, Kumar K, Chawla R, Rath C. Drug kinetics and antimicrobial properties of quaternary bioactive glasses 81S(81SiO 2-(16-x)CaO-2P 2O 5-1Na 2O-xMgO); an in-vitro study. Biomater Adv 2024; 157:213729. [PMID: 38101068 DOI: 10.1016/j.bioadv.2023.213729] [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: 04/24/2023] [Revised: 11/20/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Bioactive glasses have recently been attracted to meet the challenge in bone tissue regeneration, repair, healing, dental implants, etc. Among the conventional bio-glasses, a novel quaternary mesoporous nano bio-glass with composition 81S(81SiO2-(16-x)CaO-2P2O5-1Na2O-xMgO) (x = 0, 1.6, 2.4, 4 and 8 mol%) employing Stober's method has been explored for examining the above potential application through in-vitro SBF assay, MTT assay, antimicrobial activity and drug loading and release ability. With increasing the MgO concentration up to 4 mol%, from in-vitro SBF assay, we observe that HAp layer develops on the surface of the nBGs confirmed from XRD, FTIR and FESEM. MTT assay using MG-63 cells confirms the biocompatibility of the nBGs having cell viability >225 % for MGO_4 after 72 h which is more than the clinically used 45S5 bio-glass. We have observed cell viability of >125 % even after 168 h. Moreover, MGO_4 is found to restrict the growth of E. coli by 65 % while S. aureus by 75 %, confirming the antimicrobial activity. Despite an increase in the concentration of magnesium, nBGs are found to be non-toxic towards the RBCs up to 4 mol% of MgO while for 8 %, the hemolysis percentage is >6 % which is toxic. Being confirmed MGO_4 nBG as a bioactive material, various concentrations of drug (Dexamethasone (DEX)) loading and release kinetics are examined. We show that 80 % of loading in case of 10 mg-ml-1 and 70 % of cumulative release in 100 h. The mesoporous structure of MGO_4 having an average pore diameter of 5 nm and surface area of 216 m2 g-1 confirmed from BET supports the loading and release kinetics. We conclude that the quaternary MGO_4 nBG may be employed effectively for bone tissue regeneration due to its high biocompatibility, excellent in-vitro cell viability, antimicrobial response and protracted drug release.
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Affiliation(s)
- Akhilesh Kumar Yadav
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Himanshu Tripathi
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Sanjna Rajput
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Priya Singh
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Krishan Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ruchi Chawla
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Chandana Rath
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
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Ahmed A, Tripathi H, van Meijgaarden KE, Kumar NC, Adiga V, Rakshit S, Parthiban C, Eveline J S, D’Souza G, Dias M, Ottenhoff TH, Netea MG, Joosten SA, Vyakarnam A. BCG revaccination in adults enhances pro-inflammatory markers of trained immunity along with anti-inflammatory pathways. iScience 2023; 26:107889. [PMID: 37817935 PMCID: PMC10561055 DOI: 10.1016/j.isci.2023.107889] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/22/2023] [Accepted: 09/07/2023] [Indexed: 10/12/2023] Open
Abstract
This study characterized mechanisms of Bacille Calmette-Guérin (BCG) revaccination-induced trained immunity (TI) in India. Adults, BCG vaccinated at birth, were sampled longitudinally before and after a second BCG dose. BCG revaccination significantly elevated tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, and IL-6 in HLA-DR+CD16-CD14hi monocytes, demonstrating induction of TI. Mycobacteria-specific CD4+ T cell interferon (IFN) γ, IL-2, and TNF-α were significantly higher in re-vaccinees and correlated positively with HLA-DR+CD16-CD14hi TI responses. This, however, did not translate into increased mycobacterial growth control, measured by mycobacterial growth inhibition assay (MGIA). Post revaccination, elevated secreted TNF-α, IL-1β, and IL-6 to "heterologous" fungal, bacterial, and enhanced CXCL-10 and IFNα to viral stimuli were also observed concomitant with increased anti-inflammatory cytokine, IL-1RA. RNA sequencing after revaccination highlighted a BCG and LPS induced signature which included upregulated IL17 and TNF pathway genes and downregulated key inflammatory genes: CXCL11, CCL24, HLADRA, CTSS, CTSC. Our data highlight a balanced immune response comprising pro- and anti-inflammatory mediators to be a feature of BCG revaccination-induced immunity.
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Affiliation(s)
- Asma Ahmed
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | - Himanshu Tripathi
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | | | - Nirutha Chetan Kumar
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | - Vasista Adiga
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
- Department of Biotechnology, PES University, Bangalore, India
| | - Srabanti Rakshit
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | - Chaitra Parthiban
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | - Sharon Eveline J
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
| | - George D’Souza
- Department of Pulmonary Medicine, St. John’s Medical College, Bangalore, India
| | - Mary Dias
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
| | - Tom H.M. Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
| | - Mihai G. Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
- Department of Immunology and Metabolism, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Simone A. Joosten
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
| | - Annapurna Vyakarnam
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
- Infectious Disease Unit, St. John’s Research Institute, Bangalore, India
- Department of Immunobiology, School of Immunology & Microbial Sciences, Faculty of Life Science & Medicine, King’s College, London, UK
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Kaushik G, Vashishtha R, Tripathi H, Yadav RN. Genetic polymorphism of toll-like receptors in HIV-I infected patients with and without tuberculosis co-infection. Int J Mycobacteriol 2022; 11:95-102. [PMID: 35295030 DOI: 10.4103/ijmy.ijmy_4_22] [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: 06/14/2023] Open
Abstract
BACKGROUND Toll-like receptors (TLRs) are identified as one of the key components of innate immune system due to their ability to sense conserved molecular motifs associated with several pathogens. It has been implicated from several evidence that mutations in genes encoding TLRs are associated with increased or decreased susceptibility to various infectious diseases. METHODS The study was prospective, cross-sectional, as well as longitudinal in nature, which includes 223 HIV-positive patients, 150 HIV-positive patients with latent tuberculosis (TB) infection, 150 HIV-positive patients with active TB, 200 HIV-negative newly diagnosed sputum smear positive pulmonary TB patients, and 205 healthy subjects. RESULTS A statistically significant difference was observed in allelic frequencies of TLR4 between healthy subjects and HIV + TB patients (P < 0.001), healthy subjects, and pulmonary TB (PTB) Category-I patients (P < 0.01) and between healthy subjects and HIV + TB patients (P < 0.001). TLR4 genotype frequencies were also significantly different between healthy subjects and PTB Cat I patients (P < 0.001) and HIV + and HIV + TB patients (P < 0.01). A statistically significant difference was also observed between HIV + and PTB Cat I patients (P = 0.04), HIV + LTBI and HIV + TB patients (P = 0.01), and between HIV + TB and PTB Cat I patients (P < 0.01). CONCLUSION This study implicates that Asp299Gly polymorphism in TLR4 gene is associated with increased susceptibility to active TB in HIV-seropositive patients. Increased frequency of 'A' allele in TLR9 gene was also discovered at the time of active TB development in ART naïve HIV + patients, who developed active TB on follow-up.
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Affiliation(s)
- Gaurav Kaushik
- Department of Medicine, All India Institute of Medical Sciences, New Delhi; University Institute of Applied Health Sciences, Chandigarh University, Mohali, Punjab, India
| | - Richa Vashishtha
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Himanshu Tripathi
- University Institute of Applied Health Sciences, Chandigarh University, Mohali, Punjab, India
| | - Raj Narayan Yadav
- Department of Microbiology, National Institute of Tuberculosis and Respiratory Diseases, New Delhi, India
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Puttoo AN, Shah NN, Tripathi S, Nazir R, Bashir H, Kauser R, Tripathi H, Haq IU. Study of Prevalence of Tuberculosis Disease in the North Indian Subcontinent Kashmir Valley: A Cross-sectional Hospital-based Study. J Clin Diagn Res 2022. [DOI: 10.7860/jcdr/2022/53062.15847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
BACKGROUND Sepsis and cancer are both leading causes of death, and occurrence of any one, increases the likelihood of the other. While cancer patients are susceptible to sepsis, survivors of sepsis are also susceptible to develop certain cancers. This mutual dependence for susceptibility suggests shared biology between the two disease categories. Earlier analysis had revealed a cancer-related pathway to be up-regulated in Septic Shock (SS), an advanced stage of sepsis. This has motivated a more comprehensive comparison of the transcriptomes of SS and cancer. METHODS Gene Set Enrichment Analysis was performed to detect the pathways enriched in SS and cancer. Thereafter, hierarchical clustering was applied to identify relative segregation of 17 cancer types into two groups vis-a-vis SS. Biological significance of the selected pathways was explored by network analysis. Clinical significance of the pathways was tested by survival analysis. A robust classifier of cancer groups was developed based on machine learning. RESULTS A total of 66 pathways were observed to be enriched in both SS and cancer. However, clustering segregated cancer types into two categories based on the direction of transcriptomic change. In general, there was up-regulation in SS and one group of cancer (termed Sepsis-Like Cancer, or SLC), but not in other cancers (termed Cancer Alone, or CA). The SLC group mainly consisted of malignancies of the gastrointestinal tract (head and neck, oesophagus, stomach, liver and biliary system) often associated with infection. Machine learning classifier successfully segregated the two cancer groups with high accuracy (> 98%). Additionally, pathway up-regulation was observed to be associated with survival in the SLC group of cancers. CONCLUSION Transcriptome-based systems biology approach segregates cancer into two groups (SLC and CA) based on similarity with SS. Host response to infection plays a key role in pathogenesis of SS and SLC. However, we hypothesize that some component of the host response is protective in both SS and SLC.
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Affiliation(s)
- Himanshu Tripathi
- National Institute of Biomedical Genomics, P.O. NSS, Kalyani, Nadia, West Bengal, 741251, India
| | - Samanwoy Mukhopadhyay
- National Institute of Biomedical Genomics, P.O. NSS, Kalyani, Nadia, West Bengal, 741251, India
| | - Saroj Kant Mohapatra
- National Institute of Biomedical Genomics, P.O. NSS, Kalyani, Nadia, West Bengal, 741251, India.
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Chandel NS, Tiwari PS, Singh KP, Jat D, Gaikwad BB, Tripathi H, Golhani K. Yield Prediction in Wheat ( Triticum aestivum L.) using Spectral Reflectance Indices. CURR SCI INDIA 2019. [DOI: 10.18520/cs/v116/i2/272-278] [Citation(s) in RCA: 10] [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: 11/15/2022]
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Paliwal P, Kumar AS, Tripathi H, Singh S, Patne SC, Krishnamurthy S. Pharmacological application of barium containing bioactive glass in gastro-duodenal ulcers. Materials Science and Engineering: C 2018; 92:424-434. [DOI: 10.1016/j.msec.2018.06.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 05/28/2018] [Accepted: 06/30/2018] [Indexed: 01/28/2023]
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Tripathi H, Rath C, Kumar AS, Manna PP, Singh SP. Structural, physico-mechanical and in-vitro bioactivity studies on SiO 2-CaO-P 2O 5-SrO-Al 2O 3 bioactive glasses. Mater Sci Eng C Mater Biol Appl 2018; 94:279-290. [PMID: 30423710 DOI: 10.1016/j.msec.2018.09.041] [Citation(s) in RCA: 26] [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] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 08/20/2018] [Accepted: 09/12/2018] [Indexed: 10/28/2022]
Abstract
Strontium based bioactive glasses have shown a better biocompatibility than calcia based bioactive glasses. In this report, we have shown that the bioactivity is found to be even more when we incorporate Al2O3 upto 1.5 mol% in SiO2-CaO-P2O5-SrO bioactive glass. We have studied the structural, physico-mechanical and bioactive properties in these glasses with varying alumina concentration from 0.5 to 2.5 mol%. The bioactivity of the glasses is evaluated by in vitro test in simulated body fluid (SBF). The formation of hydroxy carbonated apatite layer (HCA) on the surface of glasses after immersion in SBF is identified by the XRD, FTIR and SEM. The substitution of Al2O3 for SrO in these glasses demonstrates a significant enhancement in compressive strength and elastic modulus. However cytotoxicity and cell viability assessed using human osteosarcoma U2-OS cell lines show the growth of the cells without causing any significant loss of viability and cell death upto 1.5 mol% addition of Al2O3. Osteosarcoma cells grow on the surface of bioglasses which make them biocompatible and fit for use in clinical trials.
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Affiliation(s)
- Himanshu Tripathi
- Department of Ceramic Engineering, IIT (BHU), Varanasi 221005, India; School of Materials Science & Technology, IIT (BHU), Varanasi 221005, India..
| | - Chandana Rath
- School of Materials Science & Technology, IIT (BHU), Varanasi 221005, India..
| | | | - Partha Pratim Manna
- Immunobiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - S P Singh
- Department of Ceramic Engineering, IIT (BHU), Varanasi 221005, India.
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Kumar Y, Prakash O, Tripathi H, Tandon S, Gupta MM, Rahman LU, Lal RK, Semwal M, Darokar MP, Khan F. AromaDb: A Database of Medicinal and Aromatic Plant's Aroma Molecules With Phytochemistry and Therapeutic Potentials. Front Plant Sci 2018; 9:1081. [PMID: 30150996 PMCID: PMC6099104 DOI: 10.3389/fpls.2018.01081] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 07/04/2018] [Indexed: 05/25/2023]
Abstract
In traditional, herbal medicine, and aromatherapy, use of essential oils and their aroma compounds have been known since long, for the management of various human diseases. The essential oil is a mixture of highly complex, naturally occurring volatile aroma compounds synthesized by medicinal and aromatic plants as secondary metabolites. Essential oils widely used in pharmaceutical, cosmetic, sanitary, food industry and agriculture for their antibacterial, antiviral, antifungal, antiparasitic, insecticidal, anticancer, neuroprotective, psychophysiological, and anti-aging activities. Moreover, volatile aroma compounds comprise a chemically diverse class of low molecular weight organic compounds with significant vapor pressure. However, aroma compounds produced by plants, mainly attract pollinators, seed dispersers and provide defense against pests or pathogens. However, in humans, about 300 active olfactory receptor genes are involved to detect thousands of different aroma compounds and modulates expression of different metabolic genes regulating human psychophysiological activity, brain function, pharmacological signaling, and therapeutic potential. Keeping in mind this importance, present database, namely, AromaDb (http://bioinfo.cimap.res.in/aromadb/) covers information of plant varieties/chemotypes, essential oils, chemical constituents, GC-MS profile, yield variations due to agro-morphological parameters, trade data, aroma compounds, fragrance type, and bioactivity details. The database includes 1,321 aroma chemical structures, bioactivities of essential oil/aroma compounds, 357 fragrance type, 166 commercially used plants, and their high yielding 148 varieties/chemotypes. Also includes calculated cheminformatics properties related to identification, physico-chemical properties, pharmacokinetics, toxicological, and ecological information. Also comprises interacted human genes affecting various diseases related cell signaling pathways correlating the use of aromatherapy. This database could be a useful resource to the plant's growers/producers, an aroma/fragrance industrialist, health professionals, and researchers exploring the potential of essential oils and aroma compounds in the development of novel formulations against human diseases.
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Affiliation(s)
- Yogesh Kumar
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Om Prakash
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Himanshu Tripathi
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Sudeep Tandon
- Department of Process Chemistry and Chemical Engineering, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Madan M. Gupta
- Department of Analytical Chemistry, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Laiq-Ur Rahman
- Department of Plant Biotechnology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Raj K. Lal
- Department of Plant Breeding, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Manoj Semwal
- Information and Communication Technology Lab, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Mahendra Pandurang Darokar
- Department of Molecular Bioprospection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Feroz Khan
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, San Diego, CA, United States
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Tripathi H, Khan F. Identification of potential inhibitors against nuclear Dam1 complex subunit Ask1 of Candida albicans using virtual screening and MD simulations. Comput Biol Chem 2018; 72:33-44. [DOI: 10.1016/j.compbiolchem.2017.12.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 11/22/2017] [Accepted: 12/30/2017] [Indexed: 11/29/2022]
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Arepalli SK, Tripathi H, Hira SK, Manna PP, Pyare R. Enhanced bioactivity, biocompatibility and mechanical behavior of strontium substituted bioactive glasses. Mater Sci Eng C Mater Biol Appl 2016; 69:108-16. [PMID: 27612694 DOI: 10.1016/j.msec.2016.06.070] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [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: 03/03/2016] [Revised: 06/13/2016] [Accepted: 06/22/2016] [Indexed: 11/19/2022]
Abstract
Strontium contained biomaterials have been reported as a potential bioactive material for bone regeneration, as it reduces bone resorption and stimulates bone formation. In the present investigation, the bioactive glasses were designed to partially substitute SrO for SiO2 in Na2O-CaO-SrO-P2O5-SiO2 system. This work demonstrates that the substitution of SrO for SiO2 has got significant benefit than substitution for CaO in the bioactive glass. Bioactivity was assessed by the immersion of the samples in simulated body fluid for different intervals. The formation of hydroxy carbonate apatite layer was identified by X-ray diffractometry, scanning electron microscopy (SEM) and energy dispersive spectroscopy. The elastic modulus of the bioactive glasses was measured and found to increase with increasing SrO for SiO2. The blood compatibility of the samples was evaluated. In vitro cell culture studies of the samples were performed using human osteosarcoma U2-OS cell lines and found a significant improvement in cell viability and proliferation. The investigation showed enhancement in bioactivity, mechanical and biological properties of the strontia substituted for silica in glasses. Thus, these bioactive glasses would be highly potential for bone regeneration.
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Affiliation(s)
- Sampath Kumar Arepalli
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
| | - Himanshu Tripathi
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Sumit Kumar Hira
- Immunobiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - Partha Pratim Manna
- Immunobiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - Ram Pyare
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
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Arepalli SK, Tripathi H, Vyas VK, Jain S, Suman SK, Pyare R, Singh S. Influence of barium substitution on bioactivity, thermal and physico-mechanical properties of bioactive glass. Materials Science and Engineering: C 2015; 49:549-559. [DOI: 10.1016/j.msec.2015.01.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 12/11/2014] [Accepted: 01/09/2015] [Indexed: 01/01/2023]
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Kalani K, Cheema HS, Tripathi H, Khan F, Daroker MP, Srivastava SK. QSAR-guided semi-synthesis and in vitro validation of antiplasmodial activity in ursolic acid derivatives. RSC Adv 2015. [DOI: 10.1039/c4ra13709d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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
As a part of antimalarial drug discovery programme, a QSAR model was developed for the prediction of antiplasmodial activity in ursolic acid derivatives, followed by semi-synthesis of virtually active derivatives and their biological evaluation.
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Affiliation(s)
- Komal Kalani
- Medicinal Chemistry Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Harveer Singh Cheema
- Molecular Bioprospection Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Himanshu Tripathi
- Metabolic & Structural Biology Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Feroz Khan
- Metabolic & Structural Biology Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - M. P. Daroker
- Molecular Bioprospection Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Santosh Kumar Srivastava
- Medicinal Chemistry Department
- CSIR-Central Institute of Medicinal and Aromatic Plants
- Lucknow-226015
- India
- Academy of Scientific and Innovative Research (AcSIR)
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Qidwai T, Priya A, Khan N, Tripathi H, Khan F, Darokar M, Pal A, Bawankule D, Shukla R, Bhakuni R. Antimalarial Drug Targets and Drugs Targeting Dolichol Metabolic Pathway of Plasmodium falciparum. Curr Drug Targets 2014; 15:374-409. [DOI: 10.2174/13894501113149990169] [Citation(s) in RCA: 4] [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] [Received: 04/24/2013] [Revised: 05/30/2013] [Accepted: 05/31/2013] [Indexed: 11/22/2022]
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Tripathi H, Luqman S, Meena A, Khan F. Genomic Identification of Potential Targets Unique to Candida albicans for the Discovery of Antifungal Agents. Curr Drug Targets 2014; 15:136-49. [DOI: 10.2174/138945011501140115112242] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 06/21/2013] [Accepted: 07/30/2013] [Indexed: 11/22/2022]
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Bhattacharya R, Satpute R, Hariharakrishnan J, Tripathi H, Saxena P. Acute toxicity of some synthetic cyanogens in rats and their response to oral treatment with alpha-ketoglutarate. Food Chem Toxicol 2009; 47:2314-20. [DOI: 10.1016/j.fct.2009.06.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 05/21/2009] [Accepted: 06/10/2009] [Indexed: 11/16/2022]
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Abstract
Previous research investigating the response of plasma beta-endorphins (beta-EP) to resistance exercise has resulted in equivocal findings. To examine further the effects of resistance exercise on beta-EP immunoreactivity, 10 male and 10 female college-age students participated in a series of controlled isotonic resistance exercises. The session consisted of three sets of eight repetitions at 80% of one repetition maximum (1-RM) for each of the following exercises: (1) bench press; (2) lateral pull-downs; (3) seated arm curls; and (4) military press. Blood plasma was sampled both before and after the lifting routine and beta-endorphin levels were determined by radioimmunoassay. A Students t test for paired samples indicated that mean(s.e.) plasma beta-endorphin levels after exercise (10.5(1.3) pg beta-EP ml-1) were significantly decreased as compared with pre-exercise (control) levels (16.5(1.2), P < 0.05). While the mechanism(s) contributing to the decrease in immunoreactivity is unclear, it may be the result of the synergistic effect of beta-EP clearance during rest intervals and changes in psychological states between sampling.
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Affiliation(s)
- E F Pierce
- Department of Health and Sport Science, University of Richmond, Virginia 23173
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