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Bhattacharyya A, Laycock H, Brett SJ, Beatty F, Kemp HI. Health care professionals' experiences of pain management in the intensive care unit: a qualitative study. Anaesthesia 2024; 79:611-626. [PMID: 38153304 DOI: 10.1111/anae.16209] [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] [Accepted: 11/24/2023] [Indexed: 12/29/2023]
Abstract
Despite the existence of evidence-based guidelines for the assessment and management of pain in the critical care setting, the prevalence of acute pain remains high. Inadequate pain management is associated with longer duration of mechanical ventilation, reduced capacity for rehabilitation and long-term psychological sequelae. This study aimed to describe the experiences of pain management from healthcare professionals working in intensive care units. Healthcare professionals were recruited from intensive care units in London, UK using a purposive sampling technique. Semi-structured interviews were transcribed verbatim. Transcripts were analysed using an inductive thematic analysis technique. Thirty participants were recruited from eight diverse intensive care units. Five themes were identified. First, there was a lack of consensus in pain assessment in the ICU where nursing staff described more knowledge and confidence of validated pain measures than physicians, and concerns over validity and usability were raised. Second, there was a universal perception of resource availability impacting the quality of pain management including high clinical workload, staff turnover and availability of certain pain management techniques. Third, acknowledgement of the importance of pain management was highest in those with experience of interacting with critical care survivors. Fourth, participants described their own emotional reaction to managing those in pain which influenced their learning. Finally, there was a perception that, due to the complexity of the intensive care unit population, pain was de-prioritised and there were conflicting views as to whether standardised analgosedation algorithms were useful. This study provides evidence to suggest interdisciplinary training, collaboratively designed decision-making tools, prioritisation initiatives and research priorities are areas that could be targeted to improve pain management in critical care.
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Affiliation(s)
| | - H Laycock
- Department of Anaesthesia, Great Ormond Street Hospital, London, UK
| | - S J Brett
- Division of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, UK
- Directorate of Critical Care, Imperial College Healthcare NHS Trust, London, UK
| | - F Beatty
- Guy's and St Thomas' NHS Trust, London, UK
| | - H I Kemp
- The Pain Research Group, Imperial College London, London, UK
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Kanekar AS, Bhattacharyya A, Mohapatra PK. Ligand structure and diluent nature in defining improved Am 3+ and Cm 3+ separation using diglycolamides: a combined solvent extraction and DFT study. Dalton Trans 2024; 53:5871-5880. [PMID: 38415375 DOI: 10.1039/d3dt03261b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Separation of Am3+ and Cm3+ is one of the most challenging yet unavoidable steps in the back end of the nuclear cycle. Various ligands evaluated for Am/Cm separation have their own merits and demerits, and not a single ligand has been uniquely proposed for this purpose. In the present work, we evaluated N,N,N',N'-tetra-n-octyldiglycolamide (TODGA) vis-à-vis N,N,N',N'-tetra-2-ethylhexyldiglycolamide (T2EHDGA) in combination with a hydrophilic 2,6-bis(1,2,4-triazinyl)pyridine (SO3PhBTP) derivative in the aqueous phase for the separation of Am3+ and Cm3+ from nitric acid medium. The results showed that marginal selectivity for Am3+ over Cm3+ was observed with T2EHDGA in the presence of SO3PhBTP, which was attributed to the difference in the entropy change for their extraction from both the temperature-dependent liquid-liquid extraction and computational studies.
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Affiliation(s)
- A S Kanekar
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | - A Bhattacharyya
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | - P K Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
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Tolmacheva N, Bhattacharyya A, Noh I. Calcium Phosphate Biomaterials for 3D Bioprinting in Bone Tissue Engineering. Biomimetics (Basel) 2024; 9:95. [PMID: 38392140 PMCID: PMC10886915 DOI: 10.3390/biomimetics9020095] [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: 12/23/2023] [Revised: 01/12/2024] [Accepted: 01/31/2024] [Indexed: 02/24/2024] Open
Abstract
Three-dimensional bioprinting is a promising technology for bone tissue engineering. However, most hydrogel bioinks lack the mechanical and post-printing fidelity properties suitable for such hard tissue regeneration. To overcome these weak properties, calcium phosphates can be employed in a bioink to compensate for the lack of certain characteristics. Further, the extracellular matrix of natural bone contains this mineral, resulting in its structural robustness. Thus, calcium phosphates are necessary components of bioink for bone tissue engineering. This review paper examines different recently explored calcium phosphates, as a component of potential bioinks, for the biological, mechanical and structural properties required of 3D bioprinted scaffolds, exploring their distinctive properties that render them favorable biomaterials for bone tissue engineering. The discussion encompasses recent applications and adaptations of 3D-printed scaffolds built with calcium phosphates, delving into the scientific reasons behind the prevalence of certain types of calcium phosphates over others. Additionally, this paper elucidates their interactions with polymer hydrogels for 3D bioprinting applications. Overall, the current status of calcium phosphate/hydrogel bioinks for 3D bioprinting in bone tissue engineering has been investigated.
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Affiliation(s)
- Nelli Tolmacheva
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Amitava Bhattacharyya
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
- Medical Electronics Research Center, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Insup Noh
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
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Bhattacharyya A, Khatun MR, Narmatha S, Nagarajan R, Noh I. Modulation of 3D Bioprintability in Polysaccharide Bioink by Bioglass Nanoparticles and Multiple Metal Ions for Tissue Engineering. Tissue Eng Regen Med 2024; 21:261-275. [PMID: 37979087 PMCID: PMC10825098 DOI: 10.1007/s13770-023-00605-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/28/2023] [Accepted: 10/01/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Bioglasses are used in applications related to bone rehabilitation and repair. The mechanical and bioactive properties of polysaccharides like alginate and agarose can be modulated or improved using bioglass nanoparticles. Further essential metal ions used as crosslinker have the potential to supplement cultured cells for better growth and proliferation. METHOD In this study, the alginate bioink is modulated for fabrication of tissue engineering scaffolds by extrusion-based 3D bioprinting using agarose, bioglass nanoparticles and combination of essential trace elements such as iron, zinc, and copper. Homogeneous bioink was obtained by in situ mixing and bioprinting of its components with twin screw extruder (TSE) based 3D bioprinting, and then distribution of metal ions was induced through post-printing diffusion of metal ions in the printed scaffolds. The mechanical and 3d bioprinting properties, microscopic structure, biocompatibility of the crosslinked alginate/agarose hydrogels were analyzed for different concentrations of bioglass. The adipose derived mesenchymal stem cells (ADMSC) and osteoblast cells (MC3T3) were used to evaluate this hydrogel's biological performances. RESULTS The porosity of hydrogels significantly improves with the incorporation of the bioglass. More bioglass concentration results in improved mechanical (compressive, dynamic, and cyclic) and 3D bioprinting properties. Cell growth and extracellular matrix are also enhanced with bioglass concentration. CONCLUSION For bioprinting of the bioinks, the advanced TSE head was attached to 3D bioprinter and in situ fabrication of cell encapsulated scaffold was obtained with optimized composition considering minimal effects on cell damage. Fabricated bioinks demonstrate a biocompatible and noncytotoxic scaffold for culturing MC3T3 and ADMSC, while bioglass controls the cellular behaviors such as cell growth and extracellular matrix formation.
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Affiliation(s)
- Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Mst Rita Khatun
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - S Narmatha
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - R Nagarajan
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
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Tran HN, Kim IG, Kim JH, Bhattacharyya A, Chung EJ, Noh I. Incorporation of Cell-Adhesive Proteins in 3D-Printed Lipoic Acid-Maleic Acid-Poly(Propylene Glycol)-Based Tough Gel Ink for Cell-Supportive Microenvironment. Macromol Biosci 2023; 23:e2300316. [PMID: 37713590 DOI: 10.1002/mabi.202300316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/01/2023] [Indexed: 09/17/2023]
Abstract
In extrusion-based 3D printing, the use of synthetic polymeric hydrogels can facilitate fabrication of cellularized and implanted scaffolds with sufficient mechanical properties to maintain the structural integrity and physical stress within the in vivo conditions. However, synthetic hydrogels face challenges due to their poor properties of cellular adhesion, bioactivity, and biofunctionality. New compositions of hydrogel inks have been designed to address this limitation. A viscous poly(maleate-propylene oxide)-lipoate-poly(ethylene oxide) (MPLE) hydrogel is recently developed that shows high-resolution printability, drug-controlled release, excellent mechanical properties with adhesiveness, and biocompatibility. In this study, the authors demonstrate that the incorporation of cell-adhesive proteins like gelatin and albumin within the MPLE gel allows printing of biologically functional 3D scaffolds with rapid cell spreading (within 7 days) and high cell proliferation (twofold increase) as compared with MPLE gel only. Addition of proteins (10% w/v) supports the formation of interconnected cell clusters (≈1.6-fold increase in cell areas after 7-day) and spreading of cells in the printed scaffolds without additional growth factors. In in vivo studies, the protein-loaded scaffolds showed excellent biocompatibility and increased angiogenesis without inflammatory response after 4-week implantation in mice, thus demonstrating the promise to contribute to the printable tough hydrogel inks for tissue engineering.
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Affiliation(s)
- Hao Nguyen Tran
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - In Gul Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Jong Heon Kim
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Eun-Jae Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
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Lee DN, Park JY, Seo YW, Jin X, Hong J, Bhattacharyya A, Noh I, Choi SH. Photo-crosslinked gelatin methacryloyl hydrogel strengthened with calcium phosphate-based nanoparticles for early healing of rabbit calvarial defects. J Periodontal Implant Sci 2023; 53:321-335. [PMID: 36919004 PMCID: PMC10627735 DOI: 10.5051/jpis.2203220161] [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: 07/12/2022] [Revised: 10/16/2022] [Accepted: 10/24/2022] [Indexed: 02/05/2023] Open
Abstract
PURPOSE The aim of this study was to investigate the efficacy of photo-crosslinked gelatin methacryloyl (GelMa) hydrogel containing calcium phosphate nanoparticles (CNp) when applying different fabrication methods for bone regeneration. METHODS Four circular defects were created in the calvaria of 10 rabbits. Each defect was randomly allocated to the following study groups: 1) the sham control group, 2) the GelMa group (defect filled with crosslinked GelMa hydrogel), 3) the CNp-GelMa group (GelMa hydrogel crosslinked with nanoparticles), and 4) the CNp+GelMa group (crosslinked GelMa loaded with nanoparticles). At 2, 4, and 8 weeks, samples were harvested, and histological and micro-computed tomography analyses were performed. RESULTS Histomorphometric analysis showed that the CNp-GelMa and CNp+GelMa groups at 2 weeks had significantly greater total augmented areas than the control group (P<0.05). The greatest new bone area was observed in the CNp-GelMa group, but without statistical significance (P>0.05). Crosslinked GelMa hydrogel with nanoparticles exhibited good biocompatibility with a minimal inflammatory reaction. CONCLUSIONS There was no difference in the efficacy of bone regeneration according to the synthesized method of photo-crosslinked GelMa hydrogel with nanoparticles. However, these materials could remain within a bone defect up to 2 weeks and showed good biocompatibility with little inflammatory response. Further improvement in mechanical properties and resistance to enzymatic degradation would be needed for the clinical application.
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Affiliation(s)
- Da-Na Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Medical & Dental Devices Usability Test Center, Yonsei University Dental Hospital, Seoul, Korea
| | - Young-Wook Seo
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Xiang Jin
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jongmin Hong
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
| | - Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Medical & Dental Devices Usability Test Center, Yonsei University Dental Hospital, Seoul, Korea.
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Bhattacharyya A, Ham HW, Sonh J, Gunbayar M, Jeffy R, Nagarajan R, Khatun MR, Noh I. 3D bioprinting of complex tissue scaffolds with in situ homogeneously mixed alginate-chitosan-kaolin bioink using advanced portable biopen. Carbohydr Polym 2023; 317:121046. [PMID: 37364947 DOI: 10.1016/j.carbpol.2023.121046] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 01/02/2023] [Revised: 05/19/2023] [Accepted: 05/20/2023] [Indexed: 06/28/2023]
Abstract
Control of in situ 3D bioprinting of hydrogel without toxic crosslinker is ideal for tissue regeneration by reinforcing and homogeneously distributing biocompatible reinforcing agent during fabrication of large area and complex tissue engineering scaffolds. In this study, homogeneous mixing, and simultaneous 3D bioprinting of a multicomponent bioink based on alginate (AL)-chitosan (CH), and kaolin was obtained by an advanced pen-type extruder to ensure structural and biological homogeneity during the large area tissue reconstruction. The static, dynamic and cyclic mechanical properties as well as in situ self-standing printability significantly improved with the kaolin concentration for AL-CH bioink-printed samples due to polymer-kaolin nanoclay hydrogen bonding and cross-linking with less amount of calcium ions. The Biowork pen ensures better mixing effectiveness for the kaolin-dispersed AL-CH hydrogels (evident from computational fluid dynamics study, aluminosilicate nanoclay mapping and 3D printing of complex multilayered structures) than the conventional mixing process. Two different cell lines (osteoblast and fibroblast) introduced during large area multilayered 3D bioprinting have confirmed the suitability of such multicomponent bioinks for in vitro even tissue regeneration. The effect of kaolin to promote uniform growth and proliferation of the cells throughout the bioprinted gel matrix is more significant for this advanced pen-type extruder processed samples.
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Affiliation(s)
- Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
| | - Hyeong-Wook Ham
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - JiAe Sonh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Marla Gunbayar
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - R Jeffy
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
| | - R Nagarajan
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
| | - Mst Rita Khatun
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
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Khatun MR, Bhattacharyya A, Gunbayar M, Jung M, Noh I. Study on Bioresponsive Gelatin-Hyaluronic Acid-Genipin Hydrogel for High Cell-Density 3D Bioprinting. Gels 2023; 9:601. [PMID: 37623056 PMCID: PMC10453927 DOI: 10.3390/gels9080601] [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: 06/28/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 08/26/2023] Open
Abstract
The Development of bioresponsive extrudable hydrogels for 3D bioprinting is imperative to address the growing demand for scaffold design as well as efficient and reliable methods of tissue engineering and regenerative medicine. This study proposed genipin (5 mg) cross-linked gelatin (1 to 1.5 g)-hyaluronic acid (0.3 g) hydrogel bioink (20 mL) tailored for 3D bioprinting. The focus is on high cell loading and a less artificial extra-cellular matrix (ECM) effect, as well as exploring their potential applications in tissue engineering. The bioresponsiveness of these hydrogel scaffolds was successfully evaluated at 37 °C and room temperature (at pH 2.5, 7.4, and 9). The rheological and mechanical properties (more than three times) increased with the increase in gelatin content in the hydrogel; however, the hydrogel with the least amount of gelatin showed the best extrusion capability. This optimized hydrogel's high extrusion ability and post-printing shape fidelity were evident from 3D and four-axis printing of complex structures such as hollow tubes, stars, pyramids, and zigzag porous tubular (four-axis) scaffolds (printed at 90 kPa pressure, 70 mm/s speed, 22G needle, fourth axis rotation of 4 rpm). 3 million/mL MC3T3-E1 mouse osteoblast cells were used in preparing 3D bioprinted samples. The in vitro cell culture studies have been carried out in a CO2 incubator (at 37 °C, 5% CO2). In the cytocompatibility study, almost three times more cell viability was observed in 3 days compared to day 1 control, proving the non-toxicity and cell-supportiveness of these hydrogels. High cell viability and cell-to-cell interactions observed at the end of day 3 using this moderately stable hydrogel in 3D bioprinting exhibit high potential for precise cell delivery modes in tissue engineering as well as regenerative medicine.
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Affiliation(s)
- Mst Rita Khatun
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; (M.R.K.); (A.B.); (M.G.); (M.J.)
| | - Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; (M.R.K.); (A.B.); (M.G.); (M.J.)
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Maral Gunbayar
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; (M.R.K.); (A.B.); (M.G.); (M.J.)
| | - Minsik Jung
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; (M.R.K.); (A.B.); (M.G.); (M.J.)
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; (M.R.K.); (A.B.); (M.G.); (M.J.)
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
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Taheri S, Ghazali HS, Ghazali ZS, Bhattacharyya A, Noh I. Correction: Progress in biomechanical stimuli on the cell-encapsulated hydrogels for cartilage tissue regeneration. Biomater Res 2023; 27:74. [PMID: 37488654 PMCID: PMC10367381 DOI: 10.1186/s40824-023-00414-6] [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: 07/26/2023] Open
Affiliation(s)
- Shiva Taheri
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Hanieh Sadat Ghazali
- Department of Nanotechnology, School of Advanced Technologies, Iran University of Science and Technology, Tehran, 1684613114, Iran
| | - Zahra Sadat Ghazali
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, 158754413, Iran
| | - Amitava Bhattacharyya
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Functional, Innovative, and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Insup Noh
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
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Taheri S, Ghazali HS, Ghazali ZS, Bhattacharyya A, Noh I. Progress in biomechanical stimuli on the cell-encapsulated hydrogels for cartilage tissue regeneration. Biomater Res 2023; 27:22. [PMID: 36935512 PMCID: PMC10026525 DOI: 10.1186/s40824-023-00358-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 01/27/2023] [Accepted: 02/25/2023] [Indexed: 03/21/2023] Open
Abstract
BACKGROUND Worldwide, many people suffer from knee injuries and articular cartilage damage every year, which causes pain and reduces productivity, life quality, and daily routines. Medication is currently primarily used to relieve symptoms and not to ameliorate cartilage degeneration. As the natural healing capacity of cartilage damage is limited due to a lack of vascularization, common surgical methods are used to repair cartilage tissue, but they cannot prevent massive damage followed by injury. MAIN BODY Functional tissue engineering has recently attracted attention for the repair of cartilage damage using a combination of cells, scaffolds (constructs), biochemical factors, and biomechanical stimuli. As cyclic biomechanical loading is the key factor in maintaining the chondrocyte phenotype, many studies have evaluated the effect of biomechanical stimulation on chondrogenesis. The characteristics of hydrogels, such as their mechanical properties, water content, and cell encapsulation, make them ideal for tissue-engineered scaffolds. Induced cell signaling (biochemical and biomechanical factors) and encapsulation of cells in hydrogels as a construct are discussed for biomechanical stimulation-based tissue regeneration, and several notable studies on the effect of biomechanical stimulation on encapsulated cells within hydrogels are discussed for cartilage regeneration. CONCLUSION Induction of biochemical and biomechanical signaling on the encapsulated cells in hydrogels are important factors for biomechanical stimulation-based cartilage regeneration.
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Affiliation(s)
- Shiva Taheri
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Hanieh Sadat Ghazali
- Department of Nanotechnology, School of Advanced Technologies, Iran University of Science and Technology, Tehran, 1684613114, Iran
| | - Zahra Sadat Ghazali
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, 158754413, Iran
| | - Amitava Bhattacharyya
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
- Functional, Innovative, and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Insup Noh
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
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Bhattacharyya A, Janarthanan G, Kim T, Taheri S, Shin J, Kim J, Bae HC, Han HS, Noh I. Modulation of bioactive calcium phosphate micro/nanoparticle size and shape during in situ synthesis of photo-crosslinkable gelatin methacryloyl based nanocomposite hydrogels for 3D bioprinting and tissue engineering. Biomater Res 2022; 26:54. [PMID: 36209133 PMCID: PMC9548207 DOI: 10.1186/s40824-022-00301-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/18/2022] [Indexed: 11/10/2022] Open
Abstract
Background The gelatin-methacryloyl (GelMA) polymer suffers shape fidelity and structural stability issues during 3D bioprinting for bone tissue engineering while homogeneous mixing of reinforcing nanoparticles is always under debate. Method In this study, amorphous calcium phosphates micro/nanoparticles (CNP) incorporated GelMA is synthesized by developing specific sites for gelatin structure-based nucleation and stabilization in a one-pot processing. The process ensures homogenous distribution of CNPs while different concentrations of gelatin control their growth and morphologies. After micro/nanoparticles synthesis in the gelatin matrix, methacrylation is carried out to prepare homogeneously distributed CNP-reinforced gelatin methacryloyl (CNP GelMA) polymer. After synthesis of CNP and CNP GelMA gel, the properties of photo-crosslinked 3D bioprinting scaffolds were compared with those of the conventionally fabricated ones. Results The shape (spindle to spherical) and size (1.753 μm to 296 nm) of the micro/nanoparticles in the GelMA matrix are modulated by adjusting the gelatin concentrations during the synthesis. UV cross-linked CNP GelMA (using Irgacure 2955) has significantly improved mechanical (three times compressive strength), 3D printability (160 layers, 2 cm self-standing 3D printed height) and biological properties (cell supportiveness with osteogenic differentiation). The photo-crosslinking becomes faster due to better methacrylation, facilitating continuous 3D bioprinting or printing. Conclusion For 3D bioprinting using GelMA like photo cross-linkable polymers, where structural stability and homogeneous control of nanoparticles are major concerns, CNP GelMA is beneficial for even bone tissue regeneration within short period. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s40824-022-00301-6.
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Affiliation(s)
- Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.,Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.,Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Gopinathan Janarthanan
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.,Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Taeyang Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Shiva Taheri
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Jisun Shin
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Jihyeon Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Hyun Cheol Bae
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Hyuk-Soo Han
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea. .,Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
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Bhattacharyya A, Priya VNK, Kim JH, Khatun MR, Nagarajan R, Noh I. Nanodiamond enhanced mechanical and biological properties of extrudable gelatin hydrogel cross-linked with tannic acid and ferrous sulphate. Biomater Res 2022; 26:37. [PMID: 35907919 PMCID: PMC9338610 DOI: 10.1186/s40824-022-00285-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/20/2022] [Indexed: 11/10/2022] Open
Abstract
Background The requirements for cell-encapsulated injectable and bioprintable hydrogels are extrusion ability, cell supportive micro-environment and reasonable post-printing stability for the acclimatization of the cells in the target site. Detonation nanodiamond (ND) has shown its potential to improve the mechanical and biological properties of such hydrogels. Enhancing the performance properties of natural biopolymer gelatin-based hydrogels can widen their biomedical application possibilities to various areas including drug delivery, tissue engineering and 3D bioprinting. Method In this study, natural cross-linker tannic acid (TA) is used along with ferrous sulphate (FS) to optimize the swelling and disintegration of extrudable and 3D printable gelatin hydrogels. The amounts of TA and FS are restricted to improve the extrusion ability of the gels in 3D printing. Further, ND particles (detonation type) are dispersed using twin screw extrusion technology to study their effect on mechanical and biological properties of the 3D printing hydrogel. Results The improved dispersion of ND particles helps to improve compressive strength almost ten times and dynamic modulus three times using 40 mg ND (2% w/w of gelatin). The surface-functional groups of detonation ND also contributed for such improvement in mechanical properties due to higher interaction with the hydrogel matrix. The stability of the hydrogels in water was also improved to 7 days. Four times improvement of the cell growth and proliferation was observed in ND based hydrogel. Conclusion The cell-supportive nature of these moderately stable and extrudable ND dispersed gelatin hydrogels makes them a good candidate for short term regenerative applications of cell-encapsulated injectable hydrogels with better mechanical properties. Supplementary Information The online version contains supplementary material available at 10.1186/s40824-022-00285-3.
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Affiliation(s)
- Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.,Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.,Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - V N Karthikai Priya
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Ji-Hyeon Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - Mst Rita Khatun
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea
| | - R Nagarajan
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea. .,Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, 01811, Republic of Korea.
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Bhattacharyya A, Sharma R, Mishra MK, Chamkha AJ, Mamatha E. Numerical and Statistical Analysis of Dissipative and Heat Absorbing Graphene Maxwell Nanofluid Flow Over a Stretching Sheet. j nanofluids 2021. [DOI: 10.1166/jon.2021.1808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This paper is basically devoted to carry out an investigation regarding the unsteady flow of dissipative and heat absorbing hydromagnetic graphene Maxwell nanofluid over a linearly stretched sheet taking momentum and thermal slip conditions into account. Ethylene glycol is selected
as a base fluid while graphene particles are considered as nanoparticles. The highly nonlinear mathematical model of the problem is converted into a set of nonlinear coupled differential equations by means of fitting similarity variables. Further, Runge-Kutta Fehlberg algorithms along with
the shooting scheme are instigated to analyse the numerical solution. The variations in graphene Maxwell nanofluid velocity and temperature owing to different physical parameters have been demonstrated via numerous graphs whereas Nusselt number and skin friction coefficients are illustrated
in numeric data form and are reported in different tables. In addition, a statistical method is implemented for multiple quadratic regression estimation analysis on the numerical figures of wall velocity gradient and local Nusselt number to establish the connection among heat transfer rate
and physical parameters. Our numerical findings reveal that the magnetic field, unsteadiness, inclination angle of magnetic field and porosity parameters boost the graphene Maxwell nanofluid velocity while Maxwell parameter has a reversal impact on it. The regression analysis confers that
Nusselt number is more prone to heat absorption parameter as compared to Eckert number. Finally, the numerical findings are compared with those of earlier published articles under restricted conditions to validate the numerical solution. The comparison of numerical findings shows an excellent
conformity among the results.
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Affiliation(s)
- A. Bhattacharyya
- Department of Mathematics, BMS Institute of Technology and Management, Bengaluru 560064, Karnataka, India
| | - R. Sharma
- Department of Mathematics, GITAM Bengaluru 562163, Karnataka, India
| | - M. K. Mishra
- Department of Mathematics, SAS, VIT - AP University, 522237, Andhra Pradesh, India
| | - Ali J. Chamkha
- Faculty of Engineering, Kuwait College of Science and Technology, Doha District, 35004, Kuwait
| | - E. Mamatha
- Department of Mathematics, GITAM Bengaluru 562163, Karnataka, India
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Bhattacharyya A, Ferreira PP, Panda K, Masunaga SH, de Faria LR, Correa LE, Santos FB, Adroja DT, Yokoyama K, Dorini TT, Jardim RF, Eleno LTF, Machado AJS. Electron-phonon superconductivity in C-doped topological nodal-line semimetal Zr 5Pt 3: a muon spin rotation and relaxation (μSR) study. J Phys Condens Matter 2021; 34:035602. [PMID: 34592722 DOI: 10.1088/1361-648x/ac2bc7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
In the present work, we demonstrate that C-doped Zr5Pt3is an electron-phonon superconductor (with critical temperatureTC= 3.8 K) with a nonsymmorphic topological Dirac nodal-line semimetal state, which we report here for the first time. The superconducting properties of Zr5Pt3C0.5have been investigated by means of magnetization, resistivity, specific heat, and muon spin rotation and relaxation (μSR) measurements. We find that at low temperatures, the depolarization rate is almost constant and it can be well described by a single-bands-wave model with a superconducting gap of 2Δ(0)/kBTC= 3.84, somewhat higher than the value of BCS theory. From the transverse field μSR analysis, we estimate the London penetration depthλL= 469 nm, superconducting carrier densityns= 1.83 × 1026 m-3, and effective massm* = 1.428me. The zero field μSR confirms the absence of any spontaneous magnetic field in the superconducting ground state. In order to gain additional insights into the electronic ground state of C-doped Zr5Pt3, we also performed first-principles calculations within the framework of density functional theory (DFT). The observed homogenous electronic character of the Fermi surface as well as the mutual decrease ofTCand density of states at the Fermi level are consistent with the experimental findings of this study. However, the band structure reveals the presence of robust, gapless fourfold-degenerate nodal lines protected by 63screw rotations and glide mirror planes. Therefore, Zr5Pt3represents a novel, unprecedented condensed matter system to investigate the intricate interplay between superconductivity and topology.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - P P Ferreira
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - K Panda
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, India, Howrah 711202, West Bengal, India
| | - S H Masunaga
- Departamento de Física, Centro Universitário FEI, São Bernardo do Campo, Brazil
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L R de Faria
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - L E Correa
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - F B Santos
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, Auckland Park 2006, South Africa
| | - K Yokoyama
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom
| | - T T Dorini
- Université de Lorraine, CNRS, IJL, Nancy, France
| | - R F Jardim
- Instituto de Física, Universidade de São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, SP, Brazil
| | - L T F Eleno
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
| | - A J S Machado
- Escola de Engenharia de Lorena, Universidade de São Paulo, DEMAR, Lorena, Brazil
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Shimura Y, Wörl A, Sundermann M, Tsuda S, Adroja DT, Bhattacharyya A, Strydom AM, Hillier AD, Pratt FL, Gloskovskii A, Severing A, Onimaru T, Gegenwart P, Takabatake T. Antiferromagnetic Correlations in Strongly Valence Fluctuating CeIrSn. Phys Rev Lett 2021; 126:217202. [PMID: 34114835 DOI: 10.1103/physrevlett.126.217202] [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] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
CeIrSn with a quasikagome Ce lattice in the hexagonal basal plane is a strongly valence fluctuating compound, as we confirm by hard x-ray photoelectron spectroscopy and inelastic neutron scattering, with a high Kondo temperature of T_{K}∼480 K. We report a negative in-plane thermal expansion α/T below 2 K, which passes through a broad minimum near 0.75 K. Volume and a-axis magnetostriction for B∥a are markedly negative at low fields and change sign before a sharp metamagnetic anomaly at 6 T. These behaviors are unexpected for Ce-based intermediate valence systems, which should feature positive expansivity. Rather they point towards antiferromagnetic correlations at very low temperatures. This is supported by muon spin relaxation measurements down to 0.1 K, which provide microscopic evidence for a broad distribution of internal magnetic fields. Comparison with isostructural CeRhSn suggests that these antiferromagnetic correlations emerging at T≪T_{K} result from geometrical frustration.
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Affiliation(s)
- Y Shimura
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - A Wörl
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - M Sundermann
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - S Tsuda
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
| | - A M Strydom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
| | - A D Hillier
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
| | - F L Pratt
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX, United Kingdom
| | - A Gloskovskii
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - A Severing
- Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
| | - T Onimaru
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - P Gegenwart
- Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany
| | - T Takabatake
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
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Singh SP, Bhattacharyya A, Mittal A, Pandey A, Tewari A, Latwal A, David B, Adhikari BS, Kumar D, Negi GCS, Mir IA, Tamta KK, Sambhav K, Shekhar M, Phulara M, Manzoor M, Singh N, Tewari P, Ranhotra PS, Singh P, Dhaila P, Sah P, Kumar R, Joshi R, Rawal RS, Rawal R, Singh RD, Shah S, Sharma S, Nanda SA, Gumber S, Singh U, Reshi Z. Indian Himalayan Timberline Ecotone in Response to Climate Change – Initial Findings. CURR SCI INDIA 2021. [DOI: 10.18520/cs/v120/i5/859-871] [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: 11/15/2022]
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Pillai MM, Tran HN, Sathishkumar G, Manimekalai K, Yoon J, Lim D, Noh I, Bhattacharyya A. Symbiotic culture of nanocellulose pellicle: A potential matrix for 3D bioprinting. Materials Science and Engineering: C 2021; 119:111552. [DOI: 10.1016/j.msec.2020.111552] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/14/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022]
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Houshyar S, Bhattacharyya A, Khalid A, Rifai A, Dekiwadia C, Kumar GS, Tran PA, Fox K. Multifunctional Sutures with Temperature Sensing and Infection Control. Macromol Biosci 2021; 21:e2000364. [PMID: 33433960 DOI: 10.1002/mabi.202000364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/03/2020] [Indexed: 12/15/2022]
Abstract
The next-generation sutures should provide in situ monitoring of wound condition such as temperature while reducing surgical site infection during wound closure. In this study, functionalized nanodiamond (FND) and reduced graphene oxide (rGO) into biodegradable polycaprolactone (PCL) are incorporated to develop a new multifunctional suture with such capabilities. Incorporation of FND and rGO into PCL enhances its tensile strength by about 43% and toughness by 35%. The sutures show temperature sensing capability in the range of 25-40 °C based on the shift in zero-splitting frequency of the nitrogen-vacancy (NV- ) centers in FND via optically detected magnetic resonance, paving the way for potential detection of infection or excessive inflammation in healing wounds. The suture surface readily coats with antibiotics to reduce bacterial infection risk to the wounds. The new suture thus is promising in monitoring and supporting wound closure.
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Affiliation(s)
- Shadi Houshyar
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Asma Khalid
- College of Science, Engineering and Health, School of Applied Sciences, RMIT University, Melbourne, 3000, Australia
| | - Aaqil Rifai
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia.,Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Waurn Ponds, Vic, Australia
| | - Chaitali Dekiwadia
- RMIT Microscopy & Microanalysis Facility, College of Science, Engineering and Health, RMIT University, Melbourne, 3000, Australia
| | - G Sathish Kumar
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Phong A Tran
- Centre for Biomedical Technologies, 2 George Street, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia.,Interface Science and Materials Engineering Group, School of Mechanical, Medical and Process Engineering, QUT, 2 George Street, Brisbane, Queensland, 4000, Australia
| | - Kate Fox
- College of Science, Engineering and Health, School of Engineering, RMIT University, Melbourne, 3001, Australia
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V. E, Krishnan K, Bhattacharyya A, R. S. Advances in Ayurvedic medicinal plants and nanocarriers for arthritis treatment and management: A review. J Herb Med 2020. [DOI: 10.1016/j.hermed.2020.100412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Khan PN, Bhattacharyya A, Sharma JN, Manohar S. The recovery of strontium from acidic medium using novel strontium selective extractant: An experimental and DFT study. J Hazard Mater 2020; 397:122476. [PMID: 32416382 DOI: 10.1016/j.jhazmat.2020.122476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 06/11/2023]
Abstract
In view of the limited solvent system known for the Sr2+ extraction from acidic media, extraction and recovery of 90Sr from acidic medium using novel Octabenzyloxyoctakis[[[(N,N-diethylamino)carbonyl)]methyl]oxy]calix[8]arene (BOC8A) extractant in nitro alkane medium are presented in this paper. BOC8A and nitro alkanes have been synthesized and characterized by 1H NMR, 13C NMR, FTIR and GC-MS techniques. Solvent composition of 0.01 M BOC8A in nitro octane (NO) has been optimized for substantial amount of extraction of strontium from feed acidity of 3.5-4 M nitric acid, (D3.5-4 M HNO3 = 7.1-7.8). Poor extraction of Pu4+, Ba2+, Na+ and UO22+ and negligible extraction of Am3+, Cs+, Ru3+, Nd3+, Zr2+ and trivalent lanthanides are observed. Ion dissociation mechanism was found to be operative involving an extractable complex having Sr2+, BOC8A and HNO3 in a ratio of 1:1:2. About 99 % of Sr2+ from the loaded solvent was recovered with 0.01 M HNO3. DFT calculations were used to predict the structures of free, protonated BOC8A and its complex with Sr2+. DFT result showed reorientation in conformation of BOC8A due to protonation resulting in the Sr2+ extraction from acidic medium with significantly high interaction energy between Sr2+ and diprotonated form of BOC8A.
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Affiliation(s)
- Pasupati Nath Khan
- Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - A Bhattacharyya
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India; Radio Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - J N Sharma
- G&AMD, Materials Group, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Manohar
- Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai 400085, India
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Houshyar S, Sarker A, Jadhav A, Kumar GS, Bhattacharyya A, Nayak R, Shanks RA, Saha T, Rifai A, Padhye R, Fox K. Polypropylene-nanodiamond composite for hernia mesh. Materials Science and Engineering: C 2020; 111:110780. [DOI: 10.1016/j.msec.2020.110780] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/23/2020] [Accepted: 02/25/2020] [Indexed: 12/23/2022]
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Pillai MM, Sathishkumar G, Houshyar S, Senthilkumar R, Quigley A, Shanthakumari S, Padhye R, Bhattacharyya A. Nanocomposite-Coated Silk-Based Artificial Conduits: The Influence of Structures on Regeneration of the Peripheral Nerve. ACS Appl Bio Mater 2020; 3:4454-4464. [DOI: 10.1021/acsabm.0c00430] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Gopal Sathishkumar
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
| | - Shadi Houshyar
- Centre for Materials Innovation and Future Fashion, College of Design and Social Context, RMIT University, Melbourne, Victoria 3056, Australia
| | - Rathinasamy Senthilkumar
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
| | - Anita Quigley
- Centre for Clinical Neurosciences and Neurological Research, St. Vincent’s Hospital, Melbourne, Victoria 3065, Australia
| | - Sivanandam Shanthakumari
- Department of Pathology, PSG Institute of Medical Sciences and Research, Coimbatore 641004, India
| | - Rajiv Padhye
- Centre for Materials Innovation and Future Fashion, College of Design and Social Context, RMIT University, Melbourne, Victoria 3056, Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore 641004, India
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Janarthanan G, Pillai MM, Kulasekaran SS, Rajendran S, Bhattacharyya A. Engineered knee meniscus construct: understanding the structure and impact of functionalization in 3D environment. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-02874-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
In 2008, the US Food and Drug Administration provided guidance for the evaluation of the cardiovascular safety of antidiabetes drugs. The newer antidiabetes drugs, approved after 2008, were therefore evaluated in long-term cardiovascular outcome trials, designed and powered for the assessment of cardiovascular safety. Accordingly, the primary endpoint of these trials was a cardiac composite endpoint. Since 2008, the data from various cardiovascular outcome trials have been reported, including SAVOR-TIMI 53 (saxagliptin), EXAMINE (alogliptin), TECOS (sitagliptin), CARMELINA (linagliptin), CAROLINA (linagliptin), ELIXA (lixisenatide), LEADER (liraglutide), EXSCEL (exenatide once-weekly), SUSTAIN-6 (injectable semaglutide), HARMONY Outcomes (albiglutide), REWIND (dulaglutide), PIONEER-6 (oral semaglutide), EMPA-REG OUTCOME (empagliflozin), the CANVAS Program (canagliflozin) and DECLARE-TIMI 53 (dapagliflozin). Some of these trials subsequently also published data on renal outcomes, although these were secondary or exploratory analyses. Dipeptidyl peptidase-4 inhibitors and glucagon-like peptide-1 receptor agonists had beneficial effects on albuminuria, while sodium-glucose co-transporter-2 inhibitors additionally showed a positive effect on 'hard' renal outcomes. In contrast to the cardiovascular outcome trials, the renal outcome trial of canagliflozin, CREDENCE, assessed a hard renal endpoint as its primary endpoint and showed positive effects on these hard renal outcomes. In this review, we aim to highlight the renal outcome data from the cardiovascular outcome trials and the CREDENCE trial and understand the differences between their results. The post CREDENCE era would appear to reinforce the position of sodium-glucose co-transporter-2 inhibitors as drugs providing cardiorenal protection, in addition to their anti-glycaemic effects.
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Affiliation(s)
- A Rajani
- Janssen India Medical Affairs, Johnson & Johnson Private Ltd, Mumbai, India
| | - M Sahay
- Department of Nephrology, Osmania Medical College, Hyderabad, India
| | - A Bhattacharyya
- Department of Diabetes and Endocrinology, Manipal Hospital, Bengaluru, India
| | - A Amar
- Janssen India Medical Affairs, Johnson & Johnson Private Ltd, Mumbai, India
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Bhattacharyya A, Panda K, Adroja DT, Kase N, Biswas PK, Saha S, Das T, Lees MR, Hillier AD. Investigation of superconducting gap structure in HfIrSi using muon spin relaxation/rotation. J Phys Condens Matter 2020; 32:085601. [PMID: 31689696 DOI: 10.1088/1361-648x/ab549e] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We have investigated the superconducting state of HfIrSi using magnetization, specific heat, muon spin rotation and relaxation ([Formula: see text]SR) measurements. Superconductivity was observed at [Formula: see text] K in both specific heat and magnetization measurements. From an analysis of the transverse-field [Formula: see text]SR data, it is clear that the temperature variation of superfluid density is well fitted by an isotropic Bardeen-Cooper-Schrieffer (BCS) type s-wave gap structure. The superconducting carrier density [Formula: see text] m-3, the magnetic penetration depth, [Formula: see text] nm, and the effective mass, [Formula: see text], were calculated from the TF-[Formula: see text]SR data. Zero-field [Formula: see text]SR data for HfIrSi reveal the absence of any spontaneous magnetic moments below [Formula: see text], indicating that time-reversal symmetry (TRS) is preserved in the superconducting state of HfIrSi. Theoretical investigations suggest that the Hf and Ir atoms hybridize strongly along the c-axis, and that this is responsible for the strong three-dimensionality of this system which screens the Coulomb interaction. As a result, despite the presence of d-electrons in HfIrSi, these correlation effects are weakened, making the electron-phonon coupling more important.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Howrah 711202, West Bengal, India
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Bhattacharyya A, Adroja DT, Biswas PK, Sato YJ, Lees MR, Aoki D, Hillier AD. Ir 5d-band derived superconductivity in LaIr 3. J Phys Condens Matter 2020; 32:065602. [PMID: 31509814 DOI: 10.1088/1361-648x/ab4389] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The superconducting properties of rhombohedral LaIr3 were examined using susceptibility, resistivity, heat capacity, and zero-field (ZF) and transverse-field (TF) muon spin relaxation and rotation ([Formula: see text]SR) measurements. The susceptibility and resistivity measurements confirm a superconducting transition below [Formula: see text] K. Two successive transitions are observed in the heat capacity data, one at [Formula: see text] K and a second at 1.2 K below [Formula: see text]. The heat capacity jump is [Formula: see text], which is lower than 1.43 expected for Bardeen-Cooper-Schrieffer (BCS) weak-coupling limit. TF-[Formula: see text]SR measurements reveal a fully gapped s-wave superconductivity with [Formula: see text], which is small compared to the BCS value of 3.56, suggesting weak-coupling superconductivity. The magnetic penetration depth, [Formula: see text], estimated from TF-[Formula: see text]SR gives [Formula: see text] nm, a superconducting carrier density [Formula: see text] carriers m-3 and a carrier effective-mass enhancement factor [Formula: see text]. ZF-[Formula: see text]SR data show no evidence for any spontaneous magnetic fields below [Formula: see text], which demonstrates that time-reversal symmetry is preserved in the superconducting state of LaIr3.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
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Houshyar S, Pillai MM, Saha T, Sathish-Kumar G, Dekiwadia C, Sarker SR, Sivasubramanian R, Shanks RA, Bhattacharyya A. Correction: Three-dimensional directional nerve guide conduits fabricated by dopamine-functionalized conductive carbon nanofibre-based nanocomposite ink printing. RSC Adv 2020; 10:43960-43961. [PMID: 35532429 PMCID: PMC9058512 DOI: 10.1039/d0ra90129f] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 11/25/2020] [Indexed: 11/21/2022] Open
Abstract
Correction for ’Three-dimensional directional nerve guide conduits fabricated by dopamine-functionalized conductive carbon nanofibre-based nanocomposite ink printing’ by Shadi Houshyar et al., RSC Adv., 2020, 10, 40351–40364, DOI: 10.1039/D0RA06556K.
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Affiliation(s)
- Shadi Houshyar
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Mamatha M. Pillai
- Tissue Engineering Laboratory
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Tanushree Saha
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - G. Sathish-Kumar
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Satya Ranjan Sarker
- Department of Biotechnology and Genetic Engineering
- Jahangirnagar University
- Savar
- Bangladesh
| | - R. Sivasubramanian
- Electrochemistry Laboratory
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Robert A. Shanks
- School of Science
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3000
- Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
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Bhattacharyya A, Das SL, Basu DA. Evaluation of Risk Factors of Peripheral Neuropathy in Type 2 Diabetes Mellitus Patients with Special Reference to Vitamin B12 Defi ciency. J Assoc Physicians India 2020; 68:52. [PMID: 31979580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
| | - S L Das
- Assam Medical College and Hospital
| | - D A Basu
- Assam Medical College and Hospital
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Houshyar S, Pillai MM, Saha T, Sathish-Kumar G, Dekiwadia C, Sarker SR, Sivasubramanian R, Shanks RA, Bhattacharyya A. Three-dimensional directional nerve guide conduits fabricated by dopamine-functionalized conductive carbon nanofibre-based nanocomposite ink printing. RSC Adv 2020; 10:40351-40364. [PMID: 35520827 PMCID: PMC9057509 DOI: 10.1039/d0ra06556k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/10/2020] [Accepted: 10/05/2020] [Indexed: 12/20/2022] Open
Abstract
Directional growth induced by dopamine-functionalized CNF-based nanocomposite ink printing.
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Affiliation(s)
- Shadi Houshyar
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Mamatha M. Pillai
- Tissue Engineering Laboratory
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Tanushree Saha
- School of Engineering
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - G. Sathish-Kumar
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3001
- Australia
| | - Satya Ranjan Sarker
- Department of Biotechnology and Genetic Engineering
- Jahangirnagar University
- Dhaka-1342
- Bangladesh
| | - R. Sivasubramanian
- Electrochemistry Laboratory
- PSG Institute of Advanced Studies
- Coimbatore- 641004
- India
| | - Robert A. Shanks
- School of Science
- College of Science, Engineering and Health
- RMIT University
- Melbourne 3000
- Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles
- PSG Institute of Advanced Studies
- Coimbatore-641004
- India
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Pillai MM, Kumar GS, Houshyar S, Padhye R, Bhattacharyya A. Effect of nanocomposite coating and biomolecule functionalization on silk fibroin based conducting 3D braided scaffolds for peripheral nerve tissue engineering. Nanomedicine 2019; 24:102131. [PMID: 31778808 DOI: 10.1016/j.nano.2019.102131] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 05/29/2019] [Accepted: 11/18/2019] [Indexed: 12/11/2022]
Abstract
In this work, the effects of carbon nanofiber (CNF) dispersed poly-ε-caprolactone (PCL) nanocomposite coatings and biomolecules functionalization on silk fibroin based conducting braided nerve conduits were studied for enhancing Neuro 2a cellular activities. A unique combination of biomolecules (UCM) and varying concentrations of CNF (5, 7.5, 10% w/w) were dispersed in 10% (w/v) PCL solution for coating on degummed silk threads. The coated silk threads were braided to develop the scaffold structure. As the concentration of CNF increased in the coating, the electrical impedance decreased up to 400 Ω indicating better conductivity. The tensile and dynamic mechanical property analysis showed better mechanical properties in CNF coated samples. In vitro cytocompatibility analysis proved the non-toxicity of the developed braided conduits. Cell attachment, growth and proliferation were significantly enhanced on the biomolecule functionalized nanocomposite coated silk braided structure, exhibiting their potential for peripheral nerve regeneration and recovery.
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Affiliation(s)
- Mamatha M Pillai
- Tissue Engineering Laboratory, PSG Institute of Advanced Studies, Coimbatore, India
| | - G Sathish Kumar
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, India
| | - Shadi Houshyar
- Centre for Materials Innovation and Future Fashion, College of Design and Social Context, RMIT University, Victoria, Australia
| | - Rajiv Padhye
- Centre for Materials Innovation and Future Fashion, College of Design and Social Context, RMIT University, Victoria, Australia
| | - Amitava Bhattacharyya
- Functional, Innovative and Smart Textiles, PSG Institute of Advanced Studies, Coimbatore, India; Nanoscience and Technology, Department of Electronics and Communication Engineering, PSG College of Technology, Coimbatore, India.
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Provino A, Smetana V, Hackett TA, Paudyal D, Kashyap MK, Bernini C, Bhattacharyya A, Dhar SK, Pani M, Gatti F, Mudring AV, Manfrinetti P. Stability, Crystal Chemistry, and Magnetism of U 2+xNi 21-xB 6 and Nb 3-yNi 20+yB 6 and the Role of Uranium in the Formation of the Quaternary U 2-zNb zNi 21B 6 and U δNb 3-δNi 20B 6 Systems. Inorg Chem 2019; 58:15045-15059. [PMID: 31675217 DOI: 10.1021/acs.inorgchem.9b01440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigated the U-Ni-B and Nb-Ni-B systems to search for possible new heavy fermion compounds and superconducting materials. The formation, crystal chemistry, and physical properties of U2Ni21B6 and Nb3-yNi20+yB6 [ternary derivatives of the cubic Cr23C6-type (cF116, Fm3̅m)] have been studied; the formation of the hypothetical "U3Ni20B6" and "Nb2Ni21B6" has been disproved. U2Ni21B6 [a = 10.6701(2) Å] crystallizes in the ordered W2Cr21C6-type, whereas Nb3-yNi20+yB6 [a = 10.5842(1) Å] adopts the Mg3Ni20B6-type. Ni in U2Ni21B6 can be substituted by U, leading to the solid solution U2+xNi21-xB6 (0 ≤ x ≤ 0.3); oppositely, Nb in Nb3Ni20B6 is partially replaced by Ni, forming the solution Nb3-yNi20+yB6 (0 ≤ y ≤ 0.5), none of them reaching the limit corresponding to the hypothetically ordered "U3Ni20B6" and "Nb2Ni21B6". These results prompted us to investigate quaternary compounds U2-zNbzNi21B6 and UδNb3-δNi20B6: strong competition in the occupancy of the 4a and 8c sites by U, Nb, and Ni atoms has been observed, with the 4a site occupied by U/Ni atoms only and the 8c site filled by U/Nb atoms only. U2Ni21B6, U2.3Ni20.7B6, and Nb3Ni20B6 are Pauli paramagnets. Interestingly, Nb2.5Ni20.5B6 shows ferromagnetism with TC ≈ 11 K; the Curie-Weiss fit gives an effective magnetic moment of 2.78 μB/Ni, suggesting that all Ni atoms in the formula unit contribute to the total magnetic moment. The M(H) data at 2 K further corroborate the ferromagnetic behavior with a saturation moment of 10 μB/fu (≈0.49 μB/Ni). The magnetic moment of Ni at the 4a site induces a moment in all of the Ni atoms of the whole unit cell (32f and 48h sites), with all atoms ordering ferromagnetically at 11 K. Density functional theory (DFT) shows that the formation of U2Ni21B6 and Nb3Ni20B6 is energetically preferred. The various electronic states generating ferromagnetism on Nb2.5Ni20.5B6 and Pauli paramagnetism on U2Ni21B6 and Nb3Ni20B6 have been identified.
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Affiliation(s)
| | - Volodymyr Smetana
- Department of Materials and Environmental Chemistry , Stockholm University , 10691 Stockholm , Sweden
| | - Timothy A Hackett
- Ames Laboratory, U.S. Department of Energy , Iowa State University , Ames , Iowa 50011-3020 , United States
| | - Durga Paudyal
- Ames Laboratory, U.S. Department of Energy , Iowa State University , Ames , Iowa 50011-3020 , United States
| | - Manish K Kashyap
- Department of Physics , Kurukshetra University , Kurukshetra 136119 , Haryana , India
| | | | - Amitava Bhattacharyya
- Department of Condensed Matter Physics & Materials Science , Tata Institute of Fundamental Research , Mumbai 400005 , India
| | - Sudesh K Dhar
- Department of Condensed Matter Physics & Materials Science , Tata Institute of Fundamental Research , Mumbai 400005 , India
| | | | | | - Anja-Verena Mudring
- Department of Materials and Environmental Chemistry , Stockholm University , 10691 Stockholm , Sweden
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Venugopal E, Sahanand KS, Bhattacharyya A, Rajendran S. Electrospun PCL nanofibers blended with Wattakaka volubilis active phytochemicals for bone and cartilage tissue engineering. Nanomedicine: Nanotechnology, Biology and Medicine 2019; 21:102044. [DOI: 10.1016/j.nano.2019.102044] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 01/26/2019] [Accepted: 06/12/2019] [Indexed: 10/26/2022]
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Abstract
Peripheral nerve injuries (PNIs) are the most common injury types to affect the nervous system. Restoration of nerve function after PNI is a challenging medical issue. Extended gaps in transected peripheral nerves are only repaired using autologous nerve grafting. This technique, however, in which nerve tissue is harvested from a donor site and grafted onto a recipient site in the same body, has many limitations and disadvantages. Recent studies have revealed artificial nerve conduits as a promising alternative technique to substitute autologous nerves. This Review summarizes different types of artificial nerve grafts used to repair peripheral nerve injuries. These include synthetic and natural polymers with biological factors. Then, desirable properties of nerve guides are discussed based on their functionality and effectiveness. In the final part of this Review, fabrication methods and commercially available nerve guides are described.
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Affiliation(s)
- Shadi Houshyar
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Amitava Bhattacharyya
- Nanoscience and Technology, Department of Electronics and Communication, PSG College of Technology, Coimbatore − 641004, India
| | - Robert Shanks
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
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Houshyar S, Kumar GS, Rifai A, Tran N, Nayak R, Shanks RA, Padhye R, Fox K, Bhattacharyya A. Nanodiamond/poly-ε-caprolactone nanofibrous scaffold for wound management. Materials Science and Engineering: C 2019; 100:378-387. [DOI: 10.1016/j.msec.2019.02.110] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/04/2019] [Accepted: 02/28/2019] [Indexed: 10/27/2022]
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Srivastava GP, Ravikumar B, Bi Y, Mishra S, Das A, Shah MI, Kamaraj B, Bhattacharyya A, Philip P, Devanarayan V, Bannon AW, Das S, Xi S, Townsend M. P4-670: DISCOVERING ALZHEIMER'S DISEASE NETWORKS IN ACCELERATING MEDICINES PARTNERSHIP - ALZHEIMER'S DISEASE DATASETS. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.09.036] [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: 10/25/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Sudeshna Das
- Massachusetts General Hospital and Harvard Medical School; Cambridge MA USA
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Indra A, Dey K, Bhattacharyya A, Berlie A, Giri S. Unveiling spin-glass transition and antiferromagnetic order by μSR studies in spin-chain Sm 2BaNiO 5. J Phys Condens Matter 2019; 31:165801. [PMID: 30681979 DOI: 10.1088/1361-648x/ab01e6] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report the zero-field and longitudinal field muon spin relaxation studies in a spin-chain compound Sm2BaNiO5. Two magnetic transitions, that have not been previously detected by the heat capacity and magnetization measurements, are confirmed at 46 and 9 K. The antiferromagnetic order is suggested at 46 K. Analysis of the muon spin polarization unveils the spin-glass transition at 9 K. Time-field scaling relation of the muon spin polarization verifies the spin-spin autocorrelation function following the cut-off power law, which is approximated by the Ogielski form, as employed numerically for characterizing the spin-glasses.
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Affiliation(s)
- A Indra
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India. Department of Physics, Srikrishna College, Bagula, Nadia, W. B., 741502, India
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Bhattacharyya A, Adroja DT, Panda K, Saha S, Das T, Machado AJS, Cigarroa OV, Grant TW, Fisk Z, Hillier AD, Manfrinetti P. Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric ThCoC_{2}. Phys Rev Lett 2019; 122:147001. [PMID: 31050469 DOI: 10.1103/physrevlett.122.147001] [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] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/14/2019] [Indexed: 06/09/2023]
Abstract
The newly discovered noncentrosymmetric superconductor ThCoC_{2} exhibits numerous types of unconventional behavior in the field dependent heat capacity data. Here we present the first measurement of the gap symmetry of ThCoC_{2} by muon spin rotation and relaxation (μSR) measurements. The temperature dependence of the magnetic penetration depth measured using the transverse field μSR experiment reveals the evidence of a nodal pairing symmetry. To understand this finding, we carry out calculations of the superconducting pairing eigenvalue and eigenfunction (pairing symmetry) due to the spin-fluctuation mechanism by directly implementing the ab initio band structures. We find that the system possesses a single Fermi surface with considerable three dimensionality and a strong nesting along the k_{z} direction. Such nesting promotes a superconducting state with a cosk_{z}-like pairing symmetry with a prominent nodal line on the k_{z}=±π/2 plane. The result agrees well with the experimental data.
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Affiliation(s)
- A Bhattacharyya
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - D T Adroja
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
- Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
| | - K Panda
- Department of Physics, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah 711202, West Bengal, India
| | - Surabhi Saha
- Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Tanmoy Das
- Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - A J S Machado
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
| | - O V Cigarroa
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - T W Grant
- Escola de Engenharia de Lorena, Universidade de São Paulo, P. O. Box 116, Lorena, São Paulo, 12602810
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - Z Fisk
- Department of Physics and Astronomy, University of California-Irvine, Irvine, California 92697, USA
| | - A D Hillier
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon, OX11 0QX, United Kingdom
| | - P Manfrinetti
- Department of Chemistry, University of Genova, 16146 Genova, Italy
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Bhattacharyya A, Ansari SA, Prabhu DR, Kumar D, Mohapatra PK. Highly efficient separation of Am3+ and Eu3+ using an aqueous soluble sulfonated BTP derivative by hollow-fiber supported liquid membrane containing TODGA. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1578803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- A. Bhattacharyya
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - S. A. Ansari
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - D. R. Prabhu
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Dheeraj Kumar
- Radiopharmaceuticals Program (RPhP) Group, Board of Radiation and Isotope Technology, Vashi, Navi-Mumbai, India
| | - P. K. Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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Rawat N, Kar A, Bhattacharyya A, Yadav AK, Bhattacharyya D, Jha SN, Kumar P, Nayak SK, Tomar BS. Complexation of U(VI) with Cucurbit[5]uril: Thermodynamic and Structural investigation in aqueous medium. Spectrochim Acta A Mol Biomol Spectrosc 2019; 207:354-362. [PMID: 30292112 DOI: 10.1016/j.saa.2018.09.037] [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] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/17/2018] [Accepted: 09/18/2018] [Indexed: 06/08/2023]
Abstract
The assessment of cucurbituril (CBn) for selective removal of actinides from nuclear waste streams requires comprehensive understanding of binding parameters and coordination of these complexes. The present work is the first experimental report on complexation of actinide ion with Cucurbit[5]uril (CB5) in solution. The thermodynamic parameters (ΔG, ΔH and ΔS) for complexation of CB5 with U(VI) in formic acid water medium were determined using microcalorimetry and UV-Vis spectroscopy. The enthalpy and entropy of complexation revealed the partial binding of U(VI) to CB5 portal. The partial binding was confirmed by spectroscopic techniques viz. extended X absorption fine structure spectroscopy (EXAFS), 1H and 13C NMR. The EXAFS χ(r) versus r spectra for U-CB5 complex has been fitted from 1.4 to 3.5 Å with two oxygen shells and a carbon shell. The presence of three carbon atom in secondary shell shows the involvement of only three carbonyl oxygens directly bonding to U(VI) which is in contrast to that calculated from gas phase DFT calculation of unhydrated system. The combined effect of hydration and formic acid encapsulation led to the enhanced stability of partially bound U(VI) to CB5. In the present work the binding of formic acid has also been studied by fluorescence spectroscopy. ESI-MS data shows the unusual stabilization of U(VI) by CB5 in gas phase.
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Affiliation(s)
- Neetika Rawat
- Radioanalytical Chemistry Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India.
| | - Aishwarya Kar
- Radioanalytical Chemistry Division, Trombay, Mumbai 400085, India
| | - A Bhattacharyya
- Radiochemistry Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - A K Yadav
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India
| | - D Bhattacharyya
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - S N Jha
- Atomic and Molecular Physics Division, Trombay, Mumbai 400085, India
| | - P Kumar
- Fuel Chemistry Division, Trombay, Mumbai 400085, India
| | - S K Nayak
- Bioorganic Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India
| | - B S Tomar
- Homi Bhabha National Institute, Mumbai 400094, India
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Bhattacharyya A, Tahir A, Chandrashekar A, Vasisht S, Stinson L, Omatseye J. A cost-utility analysis of decompressive hemicraniectomy versus medical treatment in the management of space-occupying brain oedema post middle cerebral artery infarction. Eur J Neurol 2018; 26:313-e19. [DOI: 10.1111/ene.13814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 09/24/2018] [Indexed: 11/29/2022]
Affiliation(s)
| | - A. Tahir
- Imperial College London Faculty of Medicine; London UK
| | | | - S. Vasisht
- Brighton and Sussex Medical School; Brighton UK
| | - L. Stinson
- King's College London School of Medical Education; London UK
| | - J. Omatseye
- University of Liverpool School of Medicine; Liverpool UK
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Chatterjee S, Chatterjee A, Jana S, Roy H, Nargis N, Bhattacharyya A. Breast tumor-associated exosomes mediate loss of antitumor immune response by arresting cytotoxic T cell functions in the tumor microenvironment. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy427.003] [Citation(s) in RCA: 2] [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: 11/12/2022] Open
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Nair HS, Kumar CMN, Adroja DT, Ritter C, Wills AS, Kockelmann WA, Deen PP, Bhattacharyya A, Strydom AM. Magnetic structure and field-dependent magnetic phase diagram of Ni 2In-type PrCuSi. J Phys Condens Matter 2018; 30:435803. [PMID: 30229750 DOI: 10.1088/1361-648x/aae28d] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The magnetic structure of the ternary equiatomic intermetallic compound PrCuSi is investigated using neutron powder diffraction experiments in 0 T as well as in external magnetic fields up to 2 T. The PrCuSi compound crystallizes in the hexagonal Ni2In-type structure, in the space group P63/mmc. In this structure, cationic ordering of Cu and Si takes place. The antiferromagnetic phase transition in the Pr sublattice takes place at [Formula: see text] K in 0 T. Under an external magnetic field of 2 T, a field-induced ferromagnetic phase is observed. Magnetoelastic coupling is evidenced by an increase in the unit cell volume. Clear signatures of a mixed antiferromagnetic and ferromagnetic phase in weak, intermediate fields, 0.4-0.8 T, are obtained from the present study. Using the present set of experimental data, we construct the H - T phase diagram of PrCuSi.
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Affiliation(s)
- Harikrishnan S Nair
- Department of Physics, University of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, United States of America
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Venugopal E, Rajeswaran N, Sahanand KS, Bhattacharyya A, Rajendran S. In vitro evaluation of phytochemical loaded electrospun gelatin nanofibers for application in bone and cartilage tissue engineering. ACTA ACUST UNITED AC 2018; 14:015004. [PMID: 30249812 DOI: 10.1088/1748-605x/aae3ef] [Citation(s) in RCA: 8] [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: 11/12/2022]
Abstract
Wattakaka volubilis, a medicinal plant, is known to exhibit various potential health benefits and has traditionally been used in Ayurveda for various medicinal applications. In the present study, phytochemicals hexadecanoic acid, octadecanoic acid and N,N-Diisopropyl(2,2,3,3,3-pentafluoropropyl)amine isolated from W. volubilis leaf extract were co-electrospun with gelatin nanofibers for meniscus and osteoblast cell attachment and proliferation. The electrospun nanofibers were characterized using suitable techniques such as a scanning electron microscope and Fourier transform infrared spectroscopy. The mechanical property of electrospun gelatin nanofibers and phytochemicals incorporated gelatin nanofibers were tensile tested. Both the control and phytochemical loaded nanofiber exhibited a similar stress-strain trend. The average diameter of the control and phytocompound loaded gelatin nanofiber was found to be 300 ± 5.5 nm and 483 ± 12 nm, respectively. The rate of biodegradation of the control and phytochemical loaded nanofiber was analyzed in a simulated body fluid. The cell attachment and proliferation were monitored using a fluorescence microscope after appropriate staining. The cell viability, DNA content, extracellular secretion confirmed that the phytocompound loaded gelatin nanofibers were non-toxic and enhanced the meniscus and osteoblast cell growth and proliferation. This phytocompound loaded gelatin matrix may be used as a potential scaffold for cartilage and bone tissue engineering applications.
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Affiliation(s)
- Elakkiya Venugopal
- Tissue Engineering Laboratory, PSG Institute of Advanced Studies, Coimbatore 641004, India
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Gopinathan J, Pillai MM, Shanthakumari S, Gnanapoongothai S, Dinakar Rai BK, Santosh Sahanand K, Selvakumar R, Bhattacharyya A. Carbon nanofiber amalgamated 3D poly-ε-caprolactone scaffold functionalized porous-nanoarchitectures for human meniscal tissue engineering: In vitro and in vivo biocompatibility studies. Nanomedicine: Nanotechnology, Biology and Medicine 2018; 14:2247-2258. [DOI: 10.1016/j.nano.2018.07.012] [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: 02/28/2018] [Revised: 07/09/2018] [Accepted: 07/26/2018] [Indexed: 10/28/2022]
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Abstract
PURPOSE OF REVIEW Lack of vascularity in the human knee meniscus often leads to surgical removal (total or partial meniscectomy) in the case of severe meniscal damage. However, complete recovery is in question after such removal as the meniscus plays an important role in knee stability. Thus, meniscus tissue regeneration strategies are of intense research interest in recent years. RECENT FINDINGS The structural complexity and inhomogeneity of the meniscus have been addressed with processing technologies for precisely controlled three dimensional (3D) complex porous scaffold architectures, the use of biomolecules and nanomaterials. The regeneration and replacement of the total meniscus have been studied by the orthopedic and scientific communities via successful pre-clinical trials towards mimicking the biomechanical properties of the human knee meniscus. Researchers have attempted different regeneration strategies which contribute to in vitro regeneration and are capable of repairing meniscal tears to some extent. This review discusses the present state of the art of these meniscus tissue engineering aspects.
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Affiliation(s)
- Mamatha M Pillai
- Tissue Engineering Laboratory, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - J Gopinathan
- Advanced Textile and Polymer Research Laboratory, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - R Selvakumar
- Tissue Engineering Laboratory, PSG Institute of Advanced Studies, Coimbatore, 641004, India
| | - Amitava Bhattacharyya
- Nanoscience and Technology Lab, Department of Electronics and Communication Engineering, PSG College of Technology, Coimbatore, 641004, India.
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Ghosh S, Ghosh S, Sinha M, Sadhasivam S, Bhattacharyya A, Samanta R, Nandy A, Saini S, Mishra M, Sengupta S. 1108 Preclinical evaluation of a novel fluoroquinolone for its multi-dimensional therapeutic effects against drug-resistant Propionibacterium acnes induced acne. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Indumathi B, Thamizharasan S, Gopinathan J, Karthikeyan KK, Bhattacharyya A. Electrically conducting, transparent, graphene based nanocomposite coatings on flexible film substrate. Polym Sci Ser A 2018. [DOI: 10.1134/s0965545x16050035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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Pillai MM, Gopinathan J, Senthil Kumar R, Sathish Kumar G, Shanthakumari S, Sahanand KS, Bhattacharyya A, Selvakumar R. Tissue engineering of human knee meniscus using functionalized and reinforced silk-polyvinyl alcohol composite three-dimensional scaffolds: Understanding thein vitroandin vivobehavior. J Biomed Mater Res A 2018; 106:1722-1731. [DOI: 10.1002/jbm.a.36372] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 02/09/2018] [Accepted: 02/14/2018] [Indexed: 12/30/2022]
Affiliation(s)
| | - Janarthanan Gopinathan
- Advanced Textile and Polymer Research Laboratory; PSG Institute of Advanced Studies; Coimbatore 641004 India
| | - Rathinasamy Senthil Kumar
- Advanced Textile and Polymer Research Laboratory; PSG Institute of Advanced Studies; Coimbatore 641004 India
| | - Gopal Sathish Kumar
- Advanced Textile and Polymer Research Laboratory; PSG Institute of Advanced Studies; Coimbatore 641004 India
| | - Sivanandam Shanthakumari
- Department of Pathology; PSG Institute of Medical Sciences and Research; Coimbatore 641004 India
| | | | - Amitava Bhattacharyya
- Nanoscience and Technology Laboratory, Department of Electronics and Communication Engineering; PSG College of Technology; Coimbatore 641004 India
| | - Rajendran Selvakumar
- Tissue Engineering Laboratory; PSG Institute of Advanced Studies; Coimbatore 641004 India
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Pillai MM, Elakkiya V, Lakshmipriya H, Gopinathan J, Selvakumar R, Bhattacharyya A. A novel method for developing three dimensional (3D) silk–PVA microenvironments for bone tissue engineering—an
in vitro
study. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aaa0af] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Bhattacharyya A, Majumdar S, Bhanja SK, Mandal AB, Dash BB. Effect of dietary manipulation and vaccination of turkey breeder hens on immunoglobulin levels of yolk, yolk sac and neonate poults. J Anim Physiol Anim Nutr (Berl) 2018; 102:e957-e963. [PMID: 29352493 DOI: 10.1111/jpn.12865] [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: 08/10/2017] [Accepted: 12/11/2017] [Indexed: 12/01/2022]
Abstract
Two hundred turkey breeder hens and 24 viable toms of 30-35 weeks age of small white variety were distributed into two treatment groups having four replicates of 25 hens and three toms in each treatment. First four replicates were offered a turkey breeder diet (Diet A) (Nutrient requirements of poultry, 1994, National Academic Press, Washington, DC) and the rest four replicates were maintained on a higher plane of nutrition (Diet B) for 8-week duration. After 6 weeks of experimental feeding, two replicates from each treatment groups were vaccinated with ND (R2 B) vaccine. Yolk sac of embryo from birds fed Diet B had a significantly higher (p < .05) IgG, IgM level and HI titre (log 2) than those fed Diet A. HI titre values of embryonic yolk sac from the vaccinated birds fed Diet B were significantly higher (p < .05) than that of the control groups. In addition, HI titre values were significantly higher (p < .05) in the day-old poults of the birds fed Diet B than that of those fed Diet A. There was significantly (p < .01) positive correlation between serum IgG and IgM of the breeder birds and day-old chicks. Similarly, there was significantly (p < .05) positive correlation between yolk IgG and IgM after 1-month experimental feeding and yolk sac IgG and IgM. Positive correlation (p < .05) also existed between yolk sac IgM and day-old chick serum IgM. Furthermore, the HI titres of breeder birds' serum at 14 days post-vaccination were positively correlated with their egg yolk after 10 and 15 days post-vaccination, yolk sac and day-old chicks. Thus, the study envisaged that a higher immunity in neonate poults from turkey breeders maintained on a higher plane of nutrition may be elicited as there was maternal transfer of antibodies from the serum of breeder birds to their offsprings through their yolk sac.
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Affiliation(s)
- A Bhattacharyya
- Department of Poultry Science, College of Veterinary Science and Animal Husbandry, Mathura, India
| | - S Majumdar
- Central Avian Research Institute, Bareilly, India
| | - S K Bhanja
- Central Avian Research Institute, Bareilly, India
| | - A B Mandal
- Central Avian Research Institute, Bareilly, India
| | - B B Dash
- Indian Veterinary Research Institute, Mukteswar, India
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