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Parveen S, Khan S, Khan MM, Gupta B, Ahmad A, Alam R. Association of lipid profile and obesity in patients with polycystic ovary syndrome. Endocr Regul 2024; 58:83-90. [PMID: 38656255 DOI: 10.2478/enr-2024-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
Abstract
Objective. Abnormal lipid profile and obesity increase the risk of polycystic ovary syndrome (PCOS). PCOS patients may have a greater risk of infertility, metabolic syndrome (MetS) and cardiovascular disease (CVD) due to abnormal lipid profile and obesity. The aim of the study was to find the association between abnormal lipid profile and obesity in patients with PCOS. Methods. In this case-control study, a total of 102 female subjects (51 diagnosed PCOS and 51 age-matched healthy controls) were enrolled, aged between 20-40 years. Biochemical parameters such as total cholesterol (TC), triglycerides (TG), low-density lipoprotein-cholesterol (LDL-C), high-density lipoprotein-cholesterol (HDL-C), very low-density lipoprotein-cholesterol (VLDL-C), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) were estimated. Anthropometric parameters such as body mass index (BMI), waist circumference (WC), hip circumference (HC), and waist-to-hip ratio (WHR) were recorded. A p<0.05 was considered statistically significant. Results. Mean of BMI, WC, WHR, LH, FSH, TC, TG, LDL-C, and VLDL-C was found significantly elevated in patients with PCOS as compared to controls (p<0.01). However, the mean of HDL-C was found significantly reduced in patients with PCOS as compared to controls (p<0.01). BMI has shown a significant positive correlation with WC (r=0.562, p<0.01) and WHR (r=0.580, p<0.01) among PCOS patients. LH has shown a significant positive correlation with FSH (r=0.572, p<0.01) among PCOS patients. TC has shown a significant positive correlation with TG (r=0.687, p<0.01), LDL-C (r=0.917, p<0.01), and VLDL-C (r=0.726, p<0.01) among PCOS patients. Conclusion. The results showed that abnormal lipid profile and obesity have a significant association with PCOS patients. Regular monitoring and treatment of PCOS patients are required to reduce the risk of infertility, MetS, and CVD.
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Affiliation(s)
- Sadaf Parveen
- 1Department of Biochemistry, Integral Institute of Medical Sciences & Research (IIMSR), Integral University, Lucknow, Uttar Pradesh- 226026, India
| | - Saba Khan
- 1Department of Biochemistry, Integral Institute of Medical Sciences & Research (IIMSR), Integral University, Lucknow, Uttar Pradesh- 226026, India
| | - Mohammad Mustufa Khan
- 2Department of Basic Medical Sciences, Integral Institute of Allied Health Sciences & Research (IIAHSR), Integral University, Lucknow, Uttar Pradesh-226026, India
| | - Bhavana Gupta
- 3Department of Obstetrics and Gynaecology, Integral Institute of Medical Sciences & Research (IIMSR), Integral University, Lucknow, Uttar Pradesh-226026, India
| | - Ausaf Ahmad
- 4Department of Community Medicine, Integral Institute of Medical Sciences & Research (IIMSR), Integral University, Lucknow, Uttar Pradesh-226026, India
| | - Roshan Alam
- 1Department of Biochemistry, Integral Institute of Medical Sciences & Research (IIMSR), Integral University, Lucknow, Uttar Pradesh- 226026, India
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Noori MT, Mansi, Sundriyal S, Shrivastav V, Giri BS, Holdynski M, Nogala W, Tiwari UK, Gupta B, Min B. Copper foam supported g-C 3N 4-metal-organic framework bacteria biohybrid cathode catalyst for CO 2 reduction in microbial electrosynthesis. Sci Rep 2023; 13:22741. [PMID: 38123583 PMCID: PMC10733401 DOI: 10.1038/s41598-023-49246-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Microbial electrosynthesis (MES) presents a versatile approach for efficiently converting carbon dioxide (CO2) into valuable products. However, poor electron uptake by the microorganisms from the cathode severely limits the performance of MES. In this study, a graphitic carbon nitride (g-C3N4)-metal-organic framework (MOF) i.e. HKUST-1 composite was newly designed and synthesized as the cathode catalyst for MES operations. The physiochemical analysis such as X-ray diffraction, scanning electron microscopy (SEM), and X-ray fluorescence spectroscopy showed the successful synthesis of g-C3N4-HKUST-1, whereas electrochemical assessments revealed its enhanced kinetics for redox reactions. The g-C3N4-HKUST-1 composite displayed excellent biocompatibility to develop electroactive biohybrid catalyst for CO2 reduction. The MES with g-C3N4-HKUST-1 biohybrid demonstrated an excellent current uptake of 1.7 mA/cm2, which was noted higher as compared to the MES using g-C3N4 biohybrid (1.1 mA/cm2). Both the MESs could convert CO2 into acetic and isobutyric acid with a significantly higher yield of 0.46 g/L.d and 0.14 g/L.d respectively in MES with g-C3N4-HKUST-1 biohybrid and 0.27 g/L.d and 0.06 g/L.d, respectively in MES with g-C3N4 biohybrid. The findings of this study suggest that g-C3N4-HKUST-1 is a highly efficient catalytic material for biocathodes in MESs to significantly enhance the CO2 conversion.
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Affiliation(s)
- Md Tabish Noori
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin, South Korea
| | - Mansi
- CSIR-Central Scientific Instrument Organisation (CSIR-CSIO), Chandigarh, 160030, India
| | - Shashank Sundriyal
- Regional Center of Advanced Technologies and Materials, The Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitel ̊u 27, Olomouc, 779 00, Czech Republic
| | - Vishal Shrivastav
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Balendu Sekhar Giri
- Sustainability Cluster, School of Advanced Engineering, UPES, Dehradun, Uttarakhand, 248007, India
| | - Marcin Holdynski
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Wojciech Nogala
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Umesh K Tiwari
- CSIR-Central Scientific Instrument Organisation (CSIR-CSIO), Chandigarh, 160030, India
| | - Bhavana Gupta
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland.
| | - Booki Min
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin, South Korea.
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Gupta B, Gupta A, Singh N, Bhushan Singh R, Gupta V. Occurrence of Oral Premalignant Lesions Among Tobacco Users in a Tribal Population: A Systematic Review and Meta-Analysis. Cureus 2023; 15:e47162. [PMID: 38022083 PMCID: PMC10652032 DOI: 10.7759/cureus.47162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023] Open
Abstract
This review aimed to comprehensively assess the association between tobacco use and oral health outcomes, specifically the presence of premalignant lesions (PMLs), through a synthesis of multiple assessments conducted in diverse populations. A systematic search of relevant literature was performed, and studies meeting the inclusion criteria were selected using appropriate Medical Subject Headings (MeSH) words and Boolean operators. Data from these studies was pooled and analysed using Review Manager 5.4 (The Cochrane Collaboration, The Nordic Cochrane Centre, Copenhagen). The Newcastle-Ottawa scale was used to assess the methodological quality of the studies included. The pooled analysis of the five selected papers revealed a significant correlation between tobacco use and an increased prevalence of PMLs among tobacco users. Tobacco users had an odds ratio of 15.22 (95% CI: 10.01-23.15) as compared to non-user cohorts, significant at p 0.0001. This comprehensive synthesis of assessments underscores the detrimental impact of tobacco use on oral health, particularly in terms of potentially malignant lesions. The findings emphasise the urgency of targeted public health interventions to address tobacco consumption and promote oral health awareness, especially in populations with high tobacco consumption rates. Standardisation of methodologies and representation of diverse populations in future research would strengthen the evidence base and facilitate more effective strategies to improve oral health outcomes globally.
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Affiliation(s)
- Bhavana Gupta
- Department of Oral Pathology and Microbiology, Faculty of Dentistry, People's University, Bhopal, IND
| | - Anish Gupta
- Department of Oral Pathology and Microbiology, People's Dental Academy, People's University, Bhopal, IND
| | - Neha Singh
- Periodontology, Private Practitioner, Ranchi, IND
| | - Rajeev Bhushan Singh
- Department of Oral Pathology and Microbiology, Awadh Dental College and Hospital, Jamshedpur, IND
| | - Vivek Gupta
- Department of Periodontology and Oral Implantology, Dental Institute, Rajendra Institute of Medical Sciences (RIMS), Ranchi, IND
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Shrivastav V, Mansi, Gupta B, Dubey P, Deep A, Nogala W, Shrivastav V, Sundriyal S. Recent advances on surface mounted metal-organic frameworks for energy storage and conversion applications: Trends, challenges, and opportunities. Adv Colloid Interface Sci 2023; 318:102967. [PMID: 37523999 DOI: 10.1016/j.cis.2023.102967] [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: 05/02/2023] [Revised: 06/30/2023] [Accepted: 07/21/2023] [Indexed: 08/02/2023]
Abstract
Establishing green and reliable energy resources is very important to counteract the carbon footprints and negative impact of non-renewable energy resources. Metal-organic frameworks (MOFs) are a class of porous material finding numerous applications due to their exceptional qualities, such as high surface area, low density, superior structural flexibility, and stability. Recently, increased attention has been paid to surface mounted MOFs (SURMOFs), which is nothing but thin film of MOF, as a new category in nanotechnology having unique properties compared to bulk MOFs. With the advancement of material growth and synthesis technologies, the fine tunability of film thickness, consistency, size, and geometry with a wide range of MOF complexes is possible. In this review, we recapitulate various synthesis approaches of SURMOFs including epitaxial synthesis approach, direct solvothermal method, Langmuir-Blodgett LBL deposition, Inkjet printing technique and others and then correlated the synthesis-structure-property relationship in terms of energy storage and conversion applications. Further the critical assessment and current problems of SURMOFs have been briefly discussed to explore the future opportunities in SURMOFs for energy storage and conversion applications.
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Affiliation(s)
| | - Mansi
- CSIR-Central Scientific Instrument Organisation (CSIR-CSIO), Chandigarh 160030, India
| | - Bhavana Gupta
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Prashant Dubey
- Advanced Carbon Products and Metrology Department, CSIR-National Physical Laboratory (CSIR-NPL), New Delhi 110012, India
| | - Akash Deep
- Institute of Nano Science and Technology, Sector-81, Mohali 140306, Punjab, India
| | - Wojciech Nogala
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Vishal Shrivastav
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Shashank Sundriyal
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; Regional Center of Advanced Technologies and Materials, The Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic,.
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Gupta B, Aziz A, Sundriyal S, Shrivastav V, Melvin AA, Holdynski M, Nogala W. Evaluation of local oxygen flux produced by photoelectrochemical hydroxide oxidation by scanning electrochemical microscopy. Sci Rep 2023; 13:5019. [PMID: 36977815 PMCID: PMC10050193 DOI: 10.1038/s41598-023-32210-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/24/2023] [Indexed: 03/30/2023] Open
Abstract
Several in-situ electrochemical approaches have been developed for performing a localized photoelectrochemical investigation of the photoanode. One of the techniques is scanning electrochemical microscopy (SECM), which probes local heterogeneous reaction kinetics and fluxes of generated species. In traditional SECM analysis of photocatalysts, evaluation of the influence of radiation on the rate of studied reaction requires an additional dark background experiment. Here, using SECM and an inverted optical microscope, we demonstrate the determination of O2 flux caused by light-driven photoelectrocatalytic water splitting. Photocatalytic signal and dark background are recorded in a single SECM image. We used an indium tin oxide electrode modified with hematite (α-Fe2O3) by electrodeposition as a model sample. The light-driven flux of oxygen is calculated by analysis of SECM image recorded in substrate generation/tip collection mode. In photoelectrochemistry, the qualitative and quantitative knowledge of oxygen evolution will open new doors for understanding the local effects of dopants and hole scavengers in a straightforward and conventional manner.
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Affiliation(s)
- Bhavana Gupta
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
| | - Ariba Aziz
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Shashank Sundriyal
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Vishal Shrivastav
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Ambrose A Melvin
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Marcin Holdynski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Wojciech Nogala
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
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Lingegowda D, Som A, Gupta B, Gehani A, Ghosh P, Sen S. Abstract No. 552 Increasing Intra-Lesional pH with the Use of Bicarbonate along with Doxorubicin in Trans-Arterial Chemoembolization of Hepatocellular Carcinoma: Phase 1 Study. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.410] [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: 02/27/2023] Open
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Muacevic A, Adler JR, Singh P, Alam MS, Gupta B, Kumari P. Oral Hygiene Practices and the Awareness of Perio-Systemic Interrelationship Among the Population of Ranchi City: A Hospital-Based Study. Cureus 2022; 14:e32368. [PMID: 36632276 PMCID: PMC9828047 DOI: 10.7759/cureus.32368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The concept of the pathogenesis and etiology of periodontal disease, with their infectious and chronic natures, usually facilitates acknowledging the possibility of these infections influencing events elsewhere in the body. Concurrent awareness and recognition of the interaction between systemic and oral diseases are one of the enormous advances that require a periodontist to not only strictly direct their knowledge toward prevention and treatment but also spread awareness about the same among the unknown. Thus, the primary goal of our study was to assess public awareness of periodontal and systemic interrelationships with oral hygiene practices in Ranchi, Jharkhand. METHODOLOGY A total of 800 subjects between ages 18 and 60 years visiting the outpatient department of periodontology, Dental Institute, Rajendra Institute of Medical Sciences (RIMS), were randomly selected for inclusion in the study. After the oral hygiene checkup, the patients were presented with a self-constructed questionnaire form, where patients' awareness and knowledge about perio-systemic interrelationship and their patterns about oral hygiene practices were assessed. RESULTS The data collected was analyzed using mean and standard deviation (SD), while the chi-square (χ2) test was to evaluate the mean difference. The results of our study showed a fair oral hygiene index, minimal oral hygiene practices, and a lack of awareness regarding the interrelationship between bad oral health and systemic diseases among the population of Ranchi. Out of 800 subjects, the majority (around 44.25%) visited a dentist only if and when needed, and around 80% of the population continued using their toothbrushes for more than six months. In fact, awareness regarding the perio-systemic interrelationship was only among 5.12% (3.25% ± 1.87%) of the total population. CONCLUSION Within the limitations of our study, it can be concluded that there is a need to educate the general population about the pros and cons of maintaining oral hygiene. Dental awareness, along with periodontal health care and its impact on systemic health, should be intensified through various means.
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John S, Nogala W, Gupta B, Singh S. Synergy of photocatalysis and fuel cells: A chronological review on efficient designs, potential materials and emerging applications. Front Chem 2022; 10:1038221. [DOI: 10.3389/fchem.2022.1038221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/10/2022] [Indexed: 11/29/2022] Open
Abstract
The rising demand of energy and lack of clean water are two major concerns of modern world. Renewable energy sources are the only way out in order to provide energy in a sustainable manner for the ever-increasing demands of the society. A renewable energy source which can also provide clean water will be of immense interest and that is where Photocatalytic Fuel Cells (PFCs) exactly fit in. PFCs hold the ability to produce electric power with simultaneous photocatalytic degradation of pollutants on exposure to light. Different strategies, including conventional Photoelectrochemical cell design, have been technically upgraded to exploit the advantage of PFCs and to widen their applicability. Parallel to the research on design, researchers have put an immense effort into developing materials/composites for electrodes and their unique properties. The efficient strategies and potential materials have opened up a new horizon of applications for PFCs. Recent research reports reveal this persistently broadening arena which includes hydrogen and hydrogen peroxide generation, carbon dioxide and heavy metal reduction and even sensor applications. The review reported here consolidates all the aspects of various design strategies, materials and applications of PFCs. The review provides an overall understanding of PFC systems, which possess the potential to be a marvellous renewable source of energy with a handful of simultaneous applications. The review is a read to the scientific community and early researchers interested in working on PFC systems.
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Somasundaram K, Gupta B, Jain N, Jana S. LncRNAs divide and rule: The master regulators of phase separation. Front Genet 2022; 13:930792. [PMID: 36035193 PMCID: PMC9399341 DOI: 10.3389/fgene.2022.930792] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 04/28/2022] [Accepted: 07/07/2022] [Indexed: 11/13/2022] Open
Abstract
Most of the human genome, except for a small region that transcribes protein-coding RNAs, was considered junk. With the advent of RNA sequencing technology, we know that much of the genome codes for RNAs with no protein-coding potential. Long non-coding RNAs (lncRNAs) that form a significant proportion are dynamically expressed and play diverse roles in physiological and pathological processes. Precise spatiotemporal control of their expression is essential to carry out various biochemical reactions inside the cell. Intracellular organelles with membrane-bound compartments are known for creating an independent internal environment for carrying out specific functions. The formation of membrane-free ribonucleoprotein condensates resulting in intracellular compartments is documented in recent times to execute specialized tasks such as DNA replication and repair, chromatin remodeling, transcription, and mRNA splicing. These liquid compartments, called membrane-less organelles (MLOs), are formed by liquid–liquid phase separation (LLPS), selectively partitioning a specific set of macromolecules from others. While RNA binding proteins (RBPs) with low complexity regions (LCRs) appear to play an essential role in this process, the role of RNAs is not well-understood. It appears that short nonspecific RNAs keep the RBPs in a soluble state, while longer RNAs with unique secondary structures promote LLPS formation by specifically binding to RBPs. This review will update the current understanding of phase separation, physio-chemical nature and composition of condensates, regulation of phase separation, the role of lncRNA in the phase separation process, and the relevance to cancer development and progression.
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Gupta B, Suchomski P, Ashwin Melvin A, Linfield S, Opallo M, Nogala W. Optical readout of moisture in sand employing bipolar electrochemistry. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107329] [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: 11/30/2022] Open
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Gupta B, Thakur A, Limbu S, Malhotra C, Gupta A, Jain AK. Nocardia keratitis. QJM 2022; 115:111-112. [PMID: 34931685 DOI: 10.1093/qjmed/hcab324] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- B Gupta
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | - A Thakur
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | - S Limbu
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | - C Malhotra
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | - A Gupta
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | - A K Jain
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
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Thakur A, Agarwal S, Gupta B, Snehi S, Limbu S, Jain AK. Rosette cataract with intraocular foreign body. QJM 2022; 115:39-40. [PMID: 34694404 DOI: 10.1093/qjmed/hcab270] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Thakur
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
| | - S Agarwal
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
| | - B Gupta
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
| | - S Snehi
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
| | - S Limbu
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
| | - A K Jain
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, (PGIMER), Sector 12, Chandigarh 160012, India
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Gupta B, Sharma R, Garg K. Diagnostic Characterisation of Various Phenotypic Methods for Class-A Extended Spectrum of β-Lactamase among Multidrug Resistant Pseudomonas Aeruginosa Isolated from Diabetic Patients. J Clin Diagn Res 2022. [DOI: 10.7860/jcdr/2022/55865.16717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Introduction: Pseudomonas aeruginosa often causes nosocomial infection, especially in high risk group patients like diabetics. It shows a high degree of resistance to broad spectrum of antibiotics due to its high adaptabtibility in hospital settings, so their infections are difficult to treat. Extended Spectrum β-Lactamase (ESBL) enzymes confer resistance to most of the β-lactam antibiotics, including penicillin, cephalosporins and monobactams. Aim: To identify ESBL producing strains among Multidrug Resistant (MDR) Pseudomonas aeruginosa isolated from diabetes patients using various phenotypic methods with their performance characteristics. Materials and Methods: An observational descriptive crosssectional study was conducted in the Department of Microbiology at Sawai Man Singh Medical College, Jaipur, Rajasthan, India, from April 2017 to March 2019. Various clinical samples received from diabetic patients were cultured and P. aeruginosa were identified as per standard protocol. Antimicrobial susceptibility testing was done according to Clinical and Laboratory Standards Institute (CLSI) guidelines. ESBL producing MDR P. aeruginosa was detected by using standard Epsilometer test (E test), Phenotypic Confirmatory Disc Diffusion Test (PCDDT) and Double Disc Synergy Test (DDST). Test characteristics sensitivity, specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV) and accuracy were calculated. Kappa coefficient was used to show diagnostic agreement between the tests. Results: A total 430 clinical samples were received from diabetic patients, out of 430, 72 (16.7%) P. aeruginosa were recovered. Multidrug resistance was exhibited by 34 isolates out of 72 P. aeruginosa strains. Out of 34 MDR strains, 10 (29.4%) were found ESBL producers by PCDDT, 9 (26.47%) by DDST while 10 (29.4%) were found positive by E test. Sensitivity, specificity and accuracy for PCDDT was found 90%, 95.8% and 94.1% respectively and ‘almost perfect agreement’ was observed with E test. Conclusion: Magnitude of multidrug resistant strains was found 47.22% among P. aeruginosa isolated from diabetic patients which is an alarming sign. The ESBLs were found in 29.4% isolates. So, screening of ESBLs with the use of simple test like PCDDT in Pseudomonas aeruginosa will direct us for treatment option of suitable antibiotic regimens in diabetic patients and to prevent the spread of drug resistant organisms in hospitals.
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Kumar S, Gupta V, Singh S, Singhal P, Gupta P, Gupta B. Perception, awareness, and practice about missing teeth, prosthetic options, and knowledge about dental implants as a treatment modality in the adult population of Jharkhand State: A hospital-based study. J Pharm Bioall Sci 2022; 14:S644-S648. [PMID: 36110582 PMCID: PMC9469448 DOI: 10.4103/jpbs.jpbs_809_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 12/31/2021] [Accepted: 01/07/2022] [Indexed: 11/04/2022] Open
Abstract
Context: Several options to restore the missing teeth are currently available; however, minimal information is there regarding the tooth loss consequences and knowledge of the various prosthetic options in the Indian population. Aim: The aim of this study was to investigate the perception, awareness, and practice about missing teeth, prosthetic options, and knowledge about dental implants among the adult population of Jharkhand state. Materials and Methods: A questionnaire-based cross-sectional study was carried out on 400 participants. The questionnaire was divided into two sections, i.e., perception awareness and practice about missing teeth, its consequences, and prosthetic options and the second part was about the knowledge of dental implants. Statistical Analysis: Chi-square test was applied for comparison, and P < 0.05 was considered statistically significant. Results: Maximum numbers of people 178 (44.5%) were interested to get their teeth replaced as a definite requirement. Loss of esthetics as a consequence after tooth loss was known to 72.5% followed by tilting of adjacent teeth (47%). Awareness for prosthetic options available after tooth loss was highest (71.5%) for fixed partial denture's (Bridge). Sixty-three percentage of the studied population had not replaced their missing teeth with any dental prosthesis. Knowledge about dental implants was restricted to a meager of 84 (21%) of the participants. Dentist was the main source of information for dental implants, followed by media. Conclusion: Awareness of patients toward missing teeth and its consequences requires more emphasis. Special effort is needed to improve the knowledge of dental implants among the less educated population of this region.
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Gupta B, Somasundaram K. BRCA role changes with association: tissue-specific impact on the prognosis. Oncotarget 2021; 12:2541-2542. [PMID: 34966485 PMCID: PMC8711571 DOI: 10.18632/oncotarget.28149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/01/2021] [Indexed: 11/25/2022] Open
Affiliation(s)
- Bhavana Gupta
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore-560012, India
| | - Kumaravel Somasundaram
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore-560012, India
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16
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Judd J, Handorf E, Gupta B, Edelman M. OA08.02 First Line Treatment Patterns in Advanced NSCLC Patients With Compromised Performance Status or Comorbidities. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.058] [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: 10/20/2022]
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17
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Gupta B, Errington AC, Jimenez-Pascual A, Eftychidis V, Brabletz S, Stemmler MP, Brabletz T, Petrik D, Siebzehnrubl FA. The transcription factor ZEB1 regulates stem cell self-renewal and cell fate in the adult hippocampus. Cell Rep 2021; 36:109588. [PMID: 34433050 PMCID: PMC8411115 DOI: 10.1016/j.celrep.2021.109588] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 05/27/2021] [Accepted: 07/30/2021] [Indexed: 12/25/2022] Open
Abstract
Radial glia-like (RGL) stem cells persist in the adult mammalian hippocampus, where they generate new neurons and astrocytes throughout life. The process of adult neurogenesis is well documented, but cell-autonomous factors regulating neuronal and astroglial differentiation are incompletely understood. Here, we evaluate the functions of the transcription factor zinc-finger E-box binding homeobox 1 (ZEB1) in adult hippocampal RGL cells using a conditional-inducible mouse model. We find that ZEB1 is necessary for self-renewal of active RGL cells. Genetic deletion of Zeb1 causes a shift toward symmetric cell division that consumes the RGL cell and generates pro-neuronal progenies, resulting in an increase of newborn neurons and a decrease of newly generated astrocytes. We identify ZEB1 as positive regulator of the ets-domain transcription factor ETV5 that is critical for asymmetric division.
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Affiliation(s)
- Bhavana Gupta
- European Cancer Stem Cell Research Institute, Cardiff University School of Biosciences, Cardiff CF24 4HQ, UK
| | - Adam C Errington
- Neuroscience and Mental Health Research Institute, Cardiff University School of Biosciences, Cardiff CF24 4HQ, UK
| | - Ana Jimenez-Pascual
- European Cancer Stem Cell Research Institute, Cardiff University School of Biosciences, Cardiff CF24 4HQ, UK
| | - Vasileios Eftychidis
- European Cancer Stem Cell Research Institute, Cardiff University School of Biosciences, Cardiff CF24 4HQ, UK
| | - Simone Brabletz
- Department of Experimental Medicine I, Friedrich Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Marc P Stemmler
- Department of Experimental Medicine I, Friedrich Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Thomas Brabletz
- Department of Experimental Medicine I, Friedrich Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - David Petrik
- Cardiff University School of Biosciences, Cardiff CF10 3AX, UK
| | - Florian A Siebzehnrubl
- European Cancer Stem Cell Research Institute, Cardiff University School of Biosciences, Cardiff CF24 4HQ, UK.
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18
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19
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Abudan A, Kidd B, Hild P, Gupta B. Refractory Hypotension Following Heart Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1310] [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: 10/21/2022] Open
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20
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Gupta B, Singh NN, Tandon A. Concurrent dentigerous cyst with ossifying fibroma of the mandible. J Oral Maxillofac Pathol 2021; 25:S68-S70. [PMID: 34083975 PMCID: PMC8123241 DOI: 10.4103/jomfp.jomfp_85_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 11/30/2020] [Accepted: 01/15/2021] [Indexed: 11/04/2022] Open
Abstract
Dentigerous cyst (DC) and ossifying fibroma (OF) are intraosseous lesions of the jaw. Both are varied pathological entities with a wide spectrum of clinical and histological features along with distinct treatment plan and prognosis. While OF comes under fibro-osseous lesions of the jaws, DC is a developmental odontogenic cyst which is formed by the accumulation of fluid between reduced enamel epithelium and enamel or between layers of the enamel organ. This case report presents a rare display of two distinct pathologies synchronously and aims to discuss the possible histogenesis for the same.
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Affiliation(s)
- Bhavana Gupta
- Department of Oral Pathology, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Narendra Nath Singh
- Department of Oral Pathology, Dental Institute, RIMS, Ranchi, Jharkhand, India
| | - Ankita Tandon
- Department of Oral Pathology, Dental Institute, RIMS, Ranchi, Jharkhand, India
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21
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Smith ALM, Whitehall JC, Bradshaw C, Gay D, Robertson F, Blain AP, Hudson G, Pyle A, Houghton D, Hunt M, Sampson JN, Stamp C, Mallett G, Amarnath S, Leslie J, Oakley F, Wilson L, Baker A, Russell OM, Johnson R, Richardson CA, Gupta B, McCallum I, McDonald SAC, Kelly S, Mathers JC, Heer R, Taylor RW, Perkins ND, Turnbull DM, Sansom OJ, Greaves LC. Author Correction: Age-associated mitochondrial DNA mutations cause metabolic remodeling that contributes to accelerated intestinal tumorigenesis. Nat Cancer 2021; 2:129. [PMID: 35121898 DOI: 10.1038/s43018-020-00156-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna L M Smith
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Julia C Whitehall
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Carla Bradshaw
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - David Gay
- Cancer Research UK Beatson Institute, Glasgow, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Fiona Robertson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Alasdair P Blain
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Hudson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Angela Pyle
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - David Houghton
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Matthew Hunt
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - James N Sampson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Craig Stamp
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Grace Mallett
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Shoba Amarnath
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Jack Leslie
- Newcastle Fibrosis Research Group, Biosciences Institute, Newcastle upon Tyne, UK
| | - Fiona Oakley
- Newcastle Fibrosis Research Group, Biosciences Institute, Newcastle upon Tyne, UK
| | - Laura Wilson
- Newcastle Cancer Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Angela Baker
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Oliver M Russell
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Riem Johnson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Claire A Richardson
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Bhavana Gupta
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Iain McCallum
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Stuart A C McDonald
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Seamus Kelly
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - John C Mathers
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Rakesh Heer
- Newcastle Cancer Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Neil D Perkins
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Doug M Turnbull
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Glasgow, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Laura C Greaves
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, UK.
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK.
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22
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Rohit R, Gupta B, Gola K. Analysis of Machine Learning for Processing Big Data in High Performance Computing: A Review. EAI Endorsed Transactions on Cloud Systems 2020. [DOI: 10.4108/eai.7-9-2020.166353] [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: 11/05/2022] Open
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Abstract
Rational design and shaping of soft smart materials offer potential applications that cannot be addressed with rigid systems. In particular, electroresponsive elastic materials are well-suited for developing original active devices, such as pumps and actuators. However, applying the electric stimulus requires usually a physical connection between the active part and a power supply. Here we report about the design of an electromechanical system based on conducting polymers, enabling the actuation of a wireless microfluidic pump. Using the electric field-induced asymmetric polarization of miniaturized polypyrrole tubes, it is possible to trigger simultaneously site-specific chemical reactions, leading to shrinking and swelling in aqueous solution without any physical connection to a power source. The complementary electrochemical reactions occurring at the opposite extremities of the tube result in a differential change of its diameter. In turn, this electromechanical deformation allows inducing highly controlled fluid dynamics. The performance of such a remotely triggered electrochemically active soft pump can be fine-tuned by optimizing the wall thickness, length and inner diameter of the material. The efficient and fast actuation of the polymer pump opens up new opportunities for actuators in the field of fluidic or microfluidic devices, such as controlled drug release, artificial organs and bioinspired actuators. Tubular conducting polymer actuators are used for developing a wireless electropumping device. Bipolar electrochemistry, allowing symmetry breaking in terms of polarization and electrochemical reactions, is the key ingredient for efficient pumping. ![]()
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Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France .,National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Kaifeng 475004 China
| | - Lin Zhang
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France .,National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Kaifeng 475004 China
| | - Ambrose Ashwin Melvin
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Laurent Bouffier
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
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24
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Buruiana FE, Gupta B, Singh K. Rhabdomyosarcoma of the cervix in teenagers - Is fertility preservation a feasible option? Gynecol Oncol Rep 2020; 34:100677. [PMID: 33304979 PMCID: PMC7708689 DOI: 10.1016/j.gore.2020.100677] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/12/2020] [Accepted: 11/17/2020] [Indexed: 11/30/2022] Open
Abstract
Embryonal rhabdomyosarcoma (RMS) of the cervix. Subtypes of embryonal RMS. Disease of adolescence. Fertility preservation. Lack of standard treatment.
Embryonal rhabdomyosarcoma (RMS) of the cervix is a rare entity, encountered mainly in the first two decades of life. The literature consists mainly of case reports and few small case series, and no standard treatment guidelines are available. As this is a disease of adolescence, fertility preservation in well selected cases is of paramount importance. We report 3 cases of cervical RMS, in adolescents highlighting the clinical presentation, diagnosis and management.
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Affiliation(s)
- F E Buruiana
- ST7 O&G, Clinical Fellow Gynaecological Oncology, PanBirmingham Cancer Centre, Birmingham City Hospital NHS Trust, UK
| | - B Gupta
- Commomnwealth Fellow Gynaecological Oncology, PanBirmingham Cancer Centre, Birmingham City Hospital NHS Trust, UK
| | - K Singh
- Consultant Gynaecological Oncology, PanBirmingham Cancer Centre, Birmingham City Hospital NHS Trust, UK
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25
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Smith AL, Whitehall JC, Bradshaw C, Gay D, Robertson F, Blain AP, Hudson G, Pyle A, Houghton D, Hunt M, Sampson JN, Stamp C, Mallett G, Amarnath S, Leslie J, Oakley F, Wilson L, Baker A, Russell OM, Johnson R, Richardson CA, Gupta B, McCallum I, McDonald SA, Kelly S, Mathers JC, Heer R, Taylor RW, Perkins ND, Turnbull DM, Sansom OJ, Greaves LC. Age-associated mitochondrial DNA mutations cause metabolic remodelling that contributes to accelerated intestinal tumorigenesis. Nat Cancer 2020; 1:976-989. [PMID: 33073241 PMCID: PMC7116185 DOI: 10.1038/s43018-020-00112-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/05/2020] [Indexed: 01/15/2023]
Abstract
Oxidative phosphorylation (OXPHOS) defects caused by somatic mitochondrial DNA (mtDNA) mutations increase with age in human colorectal epithelium and are prevalent in colorectal tumours, but whether they actively contribute to tumorigenesis remains unknown. Here we demonstrate that mtDNA mutations causing OXPHOS defects are enriched during the human adenoma/carcinoma sequence, suggesting they may confer a metabolic advantage. To test this we deleted the tumour suppressor Apc in OXPHOS deficient intestinal stem cells in mice. The resulting tumours were larger than in control mice due to accelerated cell proliferation and reduced apoptosis. We show that both normal crypts and tumours undergo metabolic remodelling in response to OXPHOS deficiency by upregulating the de novo serine synthesis pathway (SSP). Moreover, normal human colonic crypts upregulate the SSP in response to OXPHOS deficiency prior to tumorigenesis. Our data show that age-associated OXPHOS deficiency causes metabolic remodelling that can functionally contribute to accelerated intestinal cancer development.
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Affiliation(s)
- Anna Lm Smith
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Julia C Whitehall
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Carla Bradshaw
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - David Gay
- Cancer Research UK Beatson Institute, Switchback Road, Glasgow, G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Switchback Road, Glasgow. G61 1QH, UK
| | - Fiona Robertson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Alasdair P Blain
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Gavin Hudson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Angela Pyle
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - David Houghton
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Matthew Hunt
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - James N Sampson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Craig Stamp
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Grace Mallett
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Shoba Amarnath
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Jack Leslie
- Newcastle Fibrosis Research Group, Biosciences Institute, Newcastle upon Tyne, NE2 4HH, UK
| | - Fiona Oakley
- Newcastle Fibrosis Research Group, Biosciences Institute, Newcastle upon Tyne, NE2 4HH, UK
| | - Laura Wilson
- Newcastle Cancer Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH UK
| | - Angela Baker
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Oliver M Russell
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Riem Johnson
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Claire A Richardson
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Bhavana Gupta
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Iain McCallum
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Stuart Ac McDonald
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Seamus Kelly
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - John C Mathers
- Human Nutrition Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH
| | - Rakesh Heer
- Newcastle Cancer Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Neil D Perkins
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Doug M Turnbull
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Switchback Road, Glasgow, G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Switchback Road, Glasgow. G61 1QH, UK
| | - Laura C Greaves
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
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26
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Suttipat D, Butcha S, Assavapanumat S, Maihom T, Gupta B, Perro A, Sojic N, Kuhn A, Wattanakit C. Chiral Macroporous MOF Surfaces for Electroassisted Enantioselective Adsorption and Separation. ACS Appl Mater Interfaces 2020; 12:36548-36557. [PMID: 32683858 DOI: 10.1021/acsami.0c09816] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of surfaces with chiral features is a fascinating challenge for modern materials science, especially when they are used for chiral separation technologies. In this contribution, the design of hierarchically structured chiral macroporous zeolitic imidazolate framework-8 (ZIF-8) electrodes is presented. They are elaborated by an electrochemical deposition-dissolution technique based on the electrodeposition of metal through a colloidal crystal template, followed by controlled electrooxidation. This generates locally metal cations, which can interact with a chiral ligand present in the solution to form metal-organic frameworks (MOFs). The macroporous structure facilitates the access of the chiral recognition sites, located in the mesoporous MOF, and thus helps to overcome mass transport limitations. The efficiency of the designed functional materials for chiral adsorption and separation can be fine-tuned by applying an adjustable electric potential to the electrode surfaces. This hierarchical chiral ZIF-8 structure was deposited at the walls of a microfluidic device and used as a stationary phase for enantioselective separation. The potential-controlled interaction between the stationary phase and the chiral analytes allows baseline separation of two enantiomers. This opens up interesting perspectives for using hierarchically structured chiral MOFs as an efficient material for the selective adsorption and separation of chiral compounds.
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Affiliation(s)
- Duangkamon Suttipat
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Sopon Butcha
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Sunpet Assavapanumat
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Thana Maihom
- Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand
| | - Bhavana Gupta
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Adeline Perro
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Neso Sojic
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Alexander Kuhn
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Chularat Wattanakit
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
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27
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Arnaboldi S, Gupta B, Benincori T, Bonetti G, Cirilli R, Kuhn A. Absolute Chiral Recognition with Hybrid Wireless Electrochemical Actuators. Anal Chem 2020; 92:10042-10047. [DOI: 10.1021/acs.analchem.0c01817] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Serena Arnaboldi
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Bhavana Gupta
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng 475004, China
| | - Tiziana Benincori
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Giorgia Bonetti
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Roberto Cirilli
- Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Roma, Italy
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
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Gupta B, Gupta S, Jafer M, Quadri F, Raj AT, Patil S. Profound approach to check legitimacy of an old technique used to gauge palatal rugae. Niger J Clin Pract 2020; 23:179-188. [PMID: 32031092 DOI: 10.4103/njcp.njcp_303_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Aims The present study aimed at assessing two fixed points of reference from where the mesial and distal point of all rugae can be measured so that the exact movement of particular rugae in any direction can be evaluated and assessing the changes in the palatal rugae after orthodontic treatment. Methods A longitudinal study conducted among a sample of 20 (8 male and 12 female) adult patients. Pre- and post-orthodontic treatment casts of patients were obtained from the Department of Orthodontics College of Dentistry Jazan University. Antero-posterior linear distances (Technique I) between medial and lateral points of primary, secondary and tertiary rugae were measured. Also, the transverse linear distance (Technique II) between medial and lateral points of right and left rugae were measured. Technique III involved marking two fixed points and using these two points a third point is located on the medial or lateral end of rugae of right and left side in pre and post-treatment orthodontic casts. The independent sample t-test was employed to compare gender. Difference between the pre- and post-treatment mean values were checked by the paired t-test. Results Technique III successfully showed the statistically significant difference (P ≤ 0.05, 95% CI) in the overall pre and post-treatment values on the patients' cast (N = 20) which was not observed with a technique I and technique II. Conclusion The triangle created by the three reference points in the technique III was able to identify the changes in the palatine rugae more precisely than the technique I and Technique II.
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Affiliation(s)
- B Gupta
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - S Gupta
- Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - M Jafer
- Department of Preventive Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - F Quadri
- Department of Preventive Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - A T Raj
- Department of Oral Pathology and Microbiology, Sri Venkateswara Dental College and Hospital, Chennai, Tamil Nadu, India
| | - S Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Gupta B, Ahmed N, Sidebottom A. Quality of life outcomes one year after replacement of the temporomandibular joint using a modified SF36 questionnaire. Br J Oral Maxillofac Surg 2020; 58:304-308. [DOI: 10.1016/j.bjoms.2019.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 12/05/2019] [Indexed: 10/24/2022]
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Gupta B, Kumari A, Belwal S, Singh RV, Fahmi N. Synthesis, characterization of platinum(II) complexes of Schiff base ligands and evaluation of cytotoxic activity of platinum nanoparticles. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1728552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Bhavana Gupta
- Department of Chemistry, University of Rajasthan, Jaipur, India
| | - Anita Kumari
- Department of Chemistry, University of Rajasthan, Jaipur, India
| | - Savita Belwal
- Department of Chemistry, Anurag group of institutions, Hyderabad, India
| | - R. V Singh
- Department of Chemistry, University of Rajasthan, Jaipur, India
| | - Nighat Fahmi
- Department of Chemistry, University of Rajasthan, Jaipur, India
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Gakhal M, Gupta B, Sidebottom A. Analysis of outcomes after revision replacement of failed total temporomandibular joint prostheses. Br J Oral Maxillofac Surg 2020; 58:220-224. [DOI: 10.1016/j.bjoms.2019.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 12/17/2019] [Indexed: 11/30/2022]
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Li B, Li Q, Gupta B, He C, Yang J. Boosting visible-light-driven catalytic hydrogen evolution via surface Ti 3+ and bulk oxygen vacancies in urchin-like hollow black TiO 2 decorated with RuO 2 and Pt dual cocatalysts. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01706j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A novel hollow urchin-like black RuO2/TiO2/Pt nanomaterial with surface Ti3+ and bulk single-electron oxygen vacancies (Vo·) was used for enhancing the hydrogen evolution performance under visible light.
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Affiliation(s)
- Bowen Li
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
| | - Qiuye Li
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
| | - Bhavana Gupta
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
| | - Chunqing He
- School of Physics and Technology
- Wuhan University
- Wuhan 430072
- China
| | - Jianjun Yang
- Engineering Research Center for Nanomaterials
- Henan University
- Kaifeng 475004
- China
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Assavapanumat S, Gupta B, Salinas G, Goudeau B, Wattanakit C, Kuhn A. Chiral platinum-polypyrrole hybrid films as efficient enantioselective actuators. Chem Commun (Camb) 2019; 55:10956-10959. [PMID: 31451809 DOI: 10.1039/c9cc05854k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report the synthesis of a hybrid bilayer, being composed of a free-standing conducting polymer film and a layer of mesoporous metal, encoded with chiral features. The resulting structure constitutes an enantioselective actuator, which can be electrochemically addressed in a wireless way. The controlled discriminatory deformation of the film allows an easy readout of chiral information.
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Affiliation(s)
- Sunpet Assavapanumat
- University of Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France.
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Gupta B, Afonso MC, Zhang L, Ayela C, Garrigue P, Goudeau B, Kuhn A. Cover Feature: Wireless Coupling of Conducting Polymer Actuators with Light Emission (ChemPhysChem 7/2019). Chemphyschem 2019. [DOI: 10.1002/cphc.201900273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
| | - Mariana C. Afonso
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
| | - Lin Zhang
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
| | - Cedric Ayela
- Univ. Bordeaux, IMS, CNRS, UMR 5218, Bordeaux INP, ENSCBP F-33405 Talence France
| | - Patrick Garrigue
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP 16 avenue Pey Berland 33607 Pessac France
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Gupta B, Afonso MC, Zhang L, Ayela C, Garrigue P, Goudeau B, Kuhn A. Wireless Coupling of Conducting Polymer Actuators with Light Emission. Chemphyschem 2019; 20:941-945. [PMID: 30840350 DOI: 10.1002/cphc.201900116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/01/2019] [Indexed: 12/16/2022]
Abstract
Combining the actuation of conducting polymers with additional functionalities is an interesting fundamental scientific challenge and increases their application potential. Herein we demonstrate the possibility of direct integration of a miniaturized light emitting diode (LED) in a polypyrrole (PPy) matrix in order to achieve simultaneous wireless actuation and light emission. A light emitting diode is used as a part of an electroactive surface on which electrochemical polymerization allows direct incorporation of the electronic device into the polymer. The resulting free-standing polymer/LED hybrid can be addressed by bipolar electrochemistry to trigger simultaneously oxidation and reduction reactions at its opposite extremities, leading to a controlled deformation and an electron flow through the integrated LED. Such a dual response in the form of actuation and light emission opens up interesting perspectives in the field of microrobotics.
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Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
| | - Mariana C Afonso
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
| | - Lin Zhang
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
| | - Cedric Ayela
- Univ. Bordeaux, IMS, CNRS, UMR 5218, Bordeaux INP, ENSCBP, F-33405, Talence, France
| | - Patrick Garrigue
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
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Abstract
The efficacy of scalp nerve block using 0.5% bupivacaine with adrenaline for postoperative pain relief in craniotomy patients was evaluated in 40 ASA I or II adult patients undergoing supratentorial craniotomy. A standard general anaesthesia technique was followed. Patients were randomly divided into two groups. Group B received 0.5% bupivacaine with 1:400,000 adrenaline and group S received normal saline with 1:400,000 adrenaline, both after skin closure. Postoperative pain was assessed at 30 seconds and 1, 2, 4, 6, 8 and 12 hours using a numerical rating scale. Diclofenac IM was administered as rescue analgesia if patients reported a numerical rating scale of 40 or more. Tramadol TV was administered as second rescue analgesia. Sixty per cent of patients in group S experienced moderate to severe pain (numerical rating scale of 40 or more) at some time during the first 12 postoperative hours in comparison to 25% patients in group B. Median pain scores were significantly lower in group B for up to 6 hours. Significantly more patients were pain free up to four hours in group B. Median duration for the requirement of first dose of diclofenac was longer in group B compared to group S (360 min vs 30 min, P<0.01). The number of doses of diclofenac (5 vs 19) was significantly lower in group B compared to group S (P<0.01). Tramadol was required by six patients in group S only. Scalp nerve block using 0.5% bupivacaine with 1:400,000 adrenaline decreases the incidence and severity of postoperative pain in patients undergoing supratentorial craniotomy.
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Affiliation(s)
- I Bala
- Department of Anaesthesiology and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Abstract
Collecting electrochemical information concerning the presence of molecules in a solution is usually achieved by measuring current, potential, resistance, or impedance via connection to a power supply. Here, we suggest wireless electromechanical actuation as a straightforward readout of chemical information. This can be achieved based on the concept of bipolar electrochemistry, which allows measuring the presence of different model species in a quantitative way. We validate the concept by using a free-standing polypyrrole film. Its positively polarized extremity participates in an oxidation of the analyte and delivers electrons to the opposite extremity for the reduction of the polymer. This reduction is accompanied by the insertion of counterions and thus leads to partial swelling of the film, inducing its bending. The resulting actuation is found to be a linear function of the analyte concentration, and also a Michaelis-Menten type correlation is obtained for biochemical analytes. This electromechanical transduction allows an easy optical readout and opens up very interesting perspectives not only in the field of sensing but also far beyond, such as for the elaboration of self-regulating biomimetic systems.
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Affiliation(s)
- Lin Zhang
- Université Bordeaux , CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland , 33607 Pessac , France.,Centre de Recherche Paul Pascal , CNRS UMR 5031, Avenue Albert Schweitzer , 33600 Pessac , France
| | - Bhavana Gupta
- Université Bordeaux , CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland , 33607 Pessac , France
| | - Bertrand Goudeau
- Université Bordeaux , CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland , 33607 Pessac , France
| | - Nicolas Mano
- Centre de Recherche Paul Pascal , CNRS UMR 5031, Avenue Albert Schweitzer , 33600 Pessac , France
| | - Alexander Kuhn
- Université Bordeaux , CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 Avenue Pey Berland , 33607 Pessac , France
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Avital YY, Dotan H, Klotz D, Grave DA, Tsyganok A, Gupta B, Kolusheva S, Visoly-Fisher I, Rothschild A, Yochelis A. Two-site H 2O 2 photo-oxidation on haematite photoanodes. Nat Commun 2018; 9:4060. [PMID: 30301897 PMCID: PMC6177486 DOI: 10.1038/s41467-018-06141-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 08/08/2018] [Indexed: 11/26/2022] Open
Abstract
H2O2 is a sacrificial reductant that is often used as a hole scavenger to gain insight into photoanode properties. Here we show a distinct mechanism of H2O2 photo-oxidation on haematite (α-Fe2O3) photoanodes. We found that the photocurrent voltammograms display non-monotonous behaviour upon varying the H2O2 concentration, which is not in accord with a linear surface reaction mechanism that involves a single reaction site as in Eley-Rideal reactions. We postulate a nonlinear kinetic mechanism that involves concerted interaction between adions induced by H2O2 deprotonation in the alkaline solution with adjacent intermediate species of the water photo-oxidation reaction, thereby involving two reaction sites as in Langmuir-Hinshelwood reactions. The devised kinetic model reproduces our main observations and predicts coexistence of two surface reaction paths (bi-stability) in a certain range of potentials and H2O2 concentrations. This prediction is confirmed experimentally by observing a hysteresis loop in the photocurrent voltammogram measured in the predicted coexistence range.
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Affiliation(s)
- Yotam Y Avital
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Blaustein Institutes for Desert Research (BIDR), Ben-Gurion University of the Negev, 8499000, Midreshet Ben-Gurion, Israel
| | - Hen Dotan
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Dino Klotz
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Daniel A Grave
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Anton Tsyganok
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Bhavana Gupta
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Blaustein Institutes for Desert Research (BIDR), Ben-Gurion University of the Negev, 8499000, Midreshet Ben-Gurion, Israel
| | - Sofia Kolusheva
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, 8410501, Be'er Sheva, Israel
| | - Iris Visoly-Fisher
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Blaustein Institutes for Desert Research (BIDR), Ben-Gurion University of the Negev, 8499000, Midreshet Ben-Gurion, Israel
| | - Avner Rothschild
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Arik Yochelis
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Blaustein Institutes for Desert Research (BIDR), Ben-Gurion University of the Negev, 8499000, Midreshet Ben-Gurion, Israel.
- Department of Physics, Ben-Gurion University of the Negev, 8410501, Be'er Sheva, Israel.
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Gupta B, Bhattacharyya A, Singh A, Sah K, Gupta V. Basaloid squamous cell carcinoma - A rare and aggressive variant of squamous cell carcinoma: A case report and review of literature. Natl J Maxillofac Surg 2018; 9:64-68. [PMID: 29937662 PMCID: PMC5996643 DOI: 10.4103/njms.njms_14_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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] [Indexed: 12/26/2022] Open
Abstract
Basaloid squamous cell carcinoma (BSCC) is a rare and aggressive variant of oral squamous cell carcinoma with a predilection for the tongue and in other locations, such as floor of the mouth, palate, retromolar trigone, and gingival mucosa. Here, we present a case of BSCC of oropharynx in a 60-year-old male patient.
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Affiliation(s)
- Bhavana Gupta
- Department of Oral Pathology, Dental institute, RIMS, Ranchi, Jharkhand, India
| | | | - Anil Singh
- Department of Oral Pathology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Kunal Sah
- Department of Oral Pathology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Vivek Gupta
- Department of Periodontology, Dental institute, RIMS, Ranchi, Jharkhand, India
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Gupta B, Gupta V. Oral pemphigus vulgaris: A case series and review of literature. J Dent Res Rev 2018. [DOI: 10.4103/jdrr.jdrr_10_18] [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: 11/04/2022] Open
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Gupta V, Kumar S, Gupta P, Gupta B. Evaluation of clinical consequences postpartial edentulism in patients of Ranchi District: An epidemiological study. J Dent Res Rev 2018. [DOI: 10.4103/jdrr.jdrr_46_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Bhattacharyya A, Gupta B, Singh A, Sah K, Gupta V. Probing natural substitute for formalin: Comparing honey, sugar, and jaggery syrup as fixatives. Natl J Maxillofac Surg 2018; 9:14-21. [PMID: 29937654 PMCID: PMC5996645 DOI: 10.4103/njms.njms_57_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Since its discovery in 1859, formalin has been considered as the “gold standard” in tissue fixation. As formalin is highly toxic and carcinogenic, the quest for its substitute has started recently. Literature search reveals very sparse studies on natural substitute for formalin. Here, it is an attempt to explore eco-friendly, economical, and readily available natural substance for formalin substitute. Aim: The aim of our study was to evaluate the efficacy of natural fixatives such as honey, sugar, jaggery, and water in comparison to the standard fixative used like formalin. Materials and Methods: Fresh goat tissues (tongue) were fixed separately with buffered 10% formalin (positive control), honey, sugar syrup, jaggery syrup, and distilled water (negative control). 24 h fixation was done at room temperature followed by conventional processing and routine H and E staining. The stained sections were assessed for cytoplasmic and nuclear detail by three pathologists under light microscope and were graded accordingly. Results: The results showed statistically significant differences between jaggery with other natural fixatives for both nuclear details and cytoplasmic staining. Conclusion: The preservation of tissue by honey, sugar, and jaggery syrup was comparable to that of formalin. Among the three natural fixatives, jaggery syrup excelled. Hence, it can be considered as an equally effective formalin substitute.
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Affiliation(s)
- Amritaksha Bhattacharyya
- Department of Oral Pathology, Maharana Pratap Dental College, Kanpur, Lucknow, Uttar Pradesh, India
| | - Bhavana Gupta
- Department of Oral Pathology, Dental Institute RIMS, Ranchi, Jharkhand, India
| | - Anil Singh
- Department of Oral Pathology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Kunal Sah
- Department of Oral Pathology, Saraswati Dental College, Lucknow, Uttar Pradesh, India
| | - Vivek Gupta
- Department of Periodontics, Dental Institute RIMS, Ranchi, Jharkhand, India
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Morgan RG, Mortensson E, Legge DN, Gupta B, Collard TJ, Greenhough A, Williams AC. LGR5 expression is regulated by EGF in early colorectal adenomas and governs EGFR inhibitor sensitivity. Br J Cancer 2017; 118:558-565. [PMID: 29149105 PMCID: PMC5830587 DOI: 10.1038/bjc.2017.412] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 12/25/2022] Open
Abstract
Background: LGR5 serves as a co-receptor for Wnt/β-catenin signalling and marks normal intestinal stem cells; however, its role in colorectal cancer (CRC) remains controversial. LGR5+ cells are known to exist outside the stem cell niche during CRC progression, and the requirement for epidermal growth factor (EGF) signalling within early adenomas remains to be fully elucidated. Methods: Epidermal growth factor and gefitinib treatments were performed in EGF-responsive LGR5+ early adenoma RG/C2 cells. 2D growth assays were measured using an IncuCyte. LGR5 or MEK1/2 silencing studies were executed using siRNA and LGR5 expression was assessed by qRT–PCR and immunoblotting. Ki67 level and cell cycle status were analysed by flow cytometry. Results: Epidermal growth factor suppresses expression of LGR5 at both the transcript and protein level in colorectal adenoma and carcinoma cells. Suppression of LGR5 reduces the survival of EGF-treated adenoma cells by increasing detached cell yield but also inducing a proliferative state, as evidenced by elevated Ki67 level and enhanced cell cycle progression. Repression of LGR5 further increases the sensitivity of adenoma cells to EGFR inhibition. Conclusions: LGR5 has an important role in the EGF-mediated survival and proliferation of early adenoma cells and could have clinical utility in predicting response of CRC patients to EGFR therapy.
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Affiliation(s)
- R G Morgan
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
| | - E Mortensson
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
| | - D N Legge
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
| | - B Gupta
- European Cancer Stem Cell Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff CF24 4HQ, UK
| | - T J Collard
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
| | - A Greenhough
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
| | - A C Williams
- School of Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, University Walk, Bristol BS8 1TD, UK
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Rigoni F, Maiti R, Baratto C, Donarelli M, MacLeod J, Gupta B, Lyu M, Ponzoni A, Sberveglieri G, Motta N, Faglia G. Transfer of CVD-grown graphene for room temperature gas sensors. Nanotechnology 2017; 28:414001. [PMID: 28805655 DOI: 10.1088/1361-6528/aa8611] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An easy transfer procedure to obtain graphene-based gas sensing devices operating at room temperature (RT) is presented. Starting from chemical vapor deposition-grown graphene on copper foil, we obtained single layer graphene which could be transferred onto arbitrary substrates. In particular, we placed single layer graphene on top of a SiO2/Si substrate with pre-patterned Pt electrodes to realize a chemiresistor gas sensor able to operate at RT. The responses to ammonia (10, 20, 30 ppm) and nitrogen dioxide (1, 2, 3 ppm) are shown at different values of relative humidity, in dark and under 254 nm UV light. In order to check the sensor selectivity, gas response has also been tested towards hydrogen, ethanol, acetone and carbon oxide. Finally, a model based on linear dispersion relation characteristic of graphene, which take into account humidity and UV light effects, has been proposed.
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Affiliation(s)
- F Rigoni
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Branze 38, I-25123 Brescia, Italy. Sensor Lab, CNR-INO Via Branze 45, I-25123 Brescia, Italy
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Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
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Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM UMR CNRS 5255; Bordeaux INP, ENSCBP; 33607 Pessac France
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Mohindra R, Capoor MR, Puri S, Raheja H, Gupta DK, Gupta B, Chowdhury R. Evaluation of serum galactomannan enzyme immunoassay at two different cut-offs for the diagnosis of invasive aspergillosis in patients with febrile neutropenia. Indian J Med Microbiol 2017; 35:237-242. [PMID: 28681812 DOI: 10.4103/ijmm.ijmm_17_47] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Invasive aspergillosis (IA) is an increasingly common and fatal opportunistic fungal infection in patients with haematological diseases. Early diagnosis is difficult as mycological culture techniques have low sensitivity and the radiological tools have low specificity. Galactomannan enzyme immunoassay (GEI) detects galactomannan in the human serum with a reported sensitivity and specificity between 30% and 100%. AIMS The aim of this study was to analyse the role of GEI in diagnosis of IA in patients with febrile neutropenia and to evaluate the role of GEI in the diagnosis of IA as per the revised (2008) European Organization for Research and Treatment of Cancer-Mycoses Study Group (EORTC-MSG) criteria at two different optical density (OD) cut-offs of 0.5 and 1.0. SETTING This prospective study was conducted in Safdarjung Hospital, New Delhi, India. METHODS GEI testing was performed in adult patients of febrile neutropenia with evidence of IA. Results at two different OD indices (ODIs) of 0.5 and 1.0 were analysed. The evaluation of the diagnostic parameter, that is, GEI was measured in terms of sensitivity, specificity and positive and negative predictive value and was validated with the revised (2008) EORTC-MSG diagnostic criteria of IA. RESULTS One hundred and eleven patients had evidence of IA, of which 79 patients were GEI positive when cut-off ODI was 0.5, whereas with cut-off ODI 1.0, 55 patients were GEI positive. CONCLUSION ODI of 1.0 should be considered as positive while in patients with OD between 0.5 and 1.0, repeat sampling from the patient is recommended.
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Affiliation(s)
- Ritin Mohindra
- Department of Hematology, VMMC and Safdarjung Hospital, New Delhi, India
| | - Malini R Capoor
- Department of Microbiology, VMMC and Safdarjung Hospital, New Delhi, India
| | - Shikha Puri
- Department of Microbiology, VMMC and Safdarjung Hospital, New Delhi, India
| | - Hitesh Raheja
- Department of Hematology, VMMC and Safdarjung Hospital, New Delhi, India
| | - Dinesh K Gupta
- Department of Hematology, VMMC and Safdarjung Hospital, New Delhi, India
| | - B Gupta
- Department of Medicine, VMMC and Safdarjung Hospital, New Delhi, India
| | - Ranadip Chowdhury
- Department of Medicine, VMMC and Safdarjung Hospital, New Delhi, India
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Gupta B, Kumar N, Panda K, Kanan V, Joshi S, Visoly-Fisher I. Role of oxygen functional groups in reduced graphene oxide for lubrication. Sci Rep 2017; 7:45030. [PMID: 28344337 PMCID: PMC5366868 DOI: 10.1038/srep45030] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [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: 10/03/2016] [Accepted: 02/20/2017] [Indexed: 12/25/2022] Open
Abstract
Functionalized and fully characterized graphene-based lubricant additives are potential 2D materials for energy-efficient tribological applications in machine elements, especially at macroscopic contacts. Two different reduced graphene oxide (rGO) derivatives, terminated by hydroxyl and epoxy-hydroxyl groups, were prepared and blended with two different molecular weights of polyethylene glycol (PEG) for tribological investigation. Epoxy-hydroxyl-terminated rGO dispersed in PEG showed significantly smaller values of the friction coefficient. In this condition, PEG chains intercalate between the functionalized graphene sheets, and shear can take place between the PEG and rGO sheets. However, the friction coefficient was unaffected when hydroxyl-terminated rGO was coupled with PEG. This can be explained by the strong coupling between graphene sheets through hydroxyl units, causing the interaction of PEG with the rGO to be non- effective for lubrication. On the other hand, antiwear properties of hydroxyl-terminated rGO were significantly enhanced compared to epoxy-hydroxyl functionalized rGO due to the integrity of graphene sheet clusters.
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Affiliation(s)
- Bhavana Gupta
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel
| | - Niranjan Kumar
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
| | - Kalpataru Panda
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Vigneshwaran Kanan
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
| | - Shailesh Joshi
- Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
| | - Iris Visoly-Fisher
- Department of Solar Energy and Environmental Physics, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel
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Gupta B, Shadbolt B, Hyam D. Referral patterns of general dental practitioners for bone grafting and implant placement. Aust Dent J 2017; 62:311-316. [PMID: 28241381 DOI: 10.1111/adj.12507] [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] [Accepted: 02/22/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Dental implant rehabilitation is a well-established procedure often conducted in the general dental practise setting. The outcomes for implant placement are reliable when the recipient site is favourable. The goal of this study was to assess the accuracy with which general dental practitioners (GDP) assess the bone volume available for implant placement and their referral patterns for implant sites, which may require bone grafting. METHODS Fifty-three GDP were surveyed and asked to assess five different scenarios and cone-beam scans for difficulty (0, 'no difficulty'; 5, 'the most difficult'), and bone grafting requirements ('yes'/'no' and 'who to perform'), prior to implant placement. RESULTS The GDP assessment of difficulty for the cases was: no graft required, 1.88; aesthetic zone involvement, 3.25; vertical deficiency, 2.8; sinus lift required, 3.68; and horizontal deficiency, 4.4. GDP seemed to have some difficulty identifying which cases required a bone graft, occasionally grafting a site with sufficient bone (12.5%), or not grafting a site with insufficient bone (45-75%). CONCLUSIONS These results show that GDP are accurate in assessing the difficulty of an implant case and conservative when it comes to attempting these complex cases. GDP are less confident when it comes to recognizing cases that require bone grafting, and what options are available.
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Affiliation(s)
- B Gupta
- Oral and Maxillofacial Unit, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - B Shadbolt
- Epidemiology and Statistics, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - D Hyam
- Oral and Maxillofacial Unit, The Canberra Hospital, Canberra, Australian Capital Territory, Australia.,Australian National Medical School, Canberra, Australian Capital Territory, Australia
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