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Amato F, van Drooge BL, Jaffrezo JL, Favez O, Colombi C, Cuccia E, Reche C, Ippolito F, Ridolfo S, Lara R, Uzu G, Ngoc TVD, Dominutti P, Darfeuil S, Albinet A, Srivastava D, Karanasiou A, Lanzani G, Alastuey A, Querol X. Aerosol source apportionment uncertainty linked to the choice of input chemical components. Environ Int 2024; 184:108441. [PMID: 38241832 DOI: 10.1016/j.envint.2024.108441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/19/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
For a Positive Matrix Factorization (PMF) aerosol source apportionment (SA) studies there is no standard procedure to select the most appropriate chemical components to be included in the input dataset for a given site typology, nor specific recommendations in this direction. However, these choices are crucial for the final SA outputs not only in terms of number of sources identified but also, and consequently, in the source contributions estimates. In fact, PMF tends to reproduce most of PM mass measured independently and introduced as a total variable in the input data, regardless of the percentage of PM mass which has been chemically characterized, so that the lack of some specific source tracers (e.g. levoglucosan) can potentially affect the results of the whole source apportionment study. The present study elaborates further on the same concept, evaluating quantitatively the impact of lacking specific sources' tracers on the whole source apportionment, both in terms of identified sources and source contributions. This work aims to provide first recommendations on the most suitable and critical components to be included in PMF analyses in order to reduce PMF output uncertainty as much as possible, and better represent the most commons PM sources observed in many sites in Western countries. To this aim, we performed three sensitivity analyses on three different datasets across EU, including extended sets of organic tracers, in order to cover different types of urban conditions (Mediterranean, Continental, and Alpine), source types, and PM fractions. Our findings reveal that the vehicle exhaust source resulted to be less sensitive to the choice of analytes, although source contributions estimates can deviate significantly up to 44 %. On the other hand, for the detection of the non-exhaust one is clearly necessary to analyze specific inorganic elements. The choice of not analysing non-polar organics likely causes the loss of separation of exhaust and non-exhaust factors, thus obtaining a unique road traffic source, which provokes a significant bias of total contribution. Levoglucosan was, in most cases, crucial to identify biomass burning contributions in Milan and in Barcelona, in spite of the presence of PAHs in Barcelona, while for the case of Grenoble, even discarding levoglucosan, the presence of PAHs allowed identifying the BB factor. Modifying the rest of analytes provoke a systematic underestimation of biomass burning source contributions. SIA factors resulted to be generally overestimated with respect to the base case analysis, also in the case that ions were not included in the PMF analysis. Trace elements were crucial to identify shipping emissions (V and Ni) and industrial sources (Pb, Ni, Br, Zn, Mn, Cd and As). When changing the rest of input variables, the uncertainty was narrow for shipping but large for industrial processes. Major and trace elements were also crucial to identify the mineral/soil factor at all cities. Biogenic SOA and Anthropogenic SOA factors were sensitive to the presence of their molecular tracers, since the availability of OC alone is unable to separate a SOA factor. Arabitol and sorbitol were crucial to detecting fungal spores while odd number of higher alkanes (C27 to C31) for plant debris.
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Affiliation(s)
- F Amato
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain.
| | - B L van Drooge
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - J L Jaffrezo
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, INRAE, IGE, 38000 Grenoble, France
| | - O Favez
- Institut national de l'environnement industriel et des risques (Ineris), 60550 Verneuil en Halatte, France
| | - C Colombi
- Environmental Monitoring Sector, Arpa Lombardia, Via Rosellini 17, Milan, 20124, Italy
| | - E Cuccia
- Environmental Monitoring Sector, Arpa Lombardia, Via Rosellini 17, Milan, 20124, Italy
| | - C Reche
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - F Ippolito
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - S Ridolfo
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - R Lara
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - G Uzu
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, INRAE, IGE, 38000 Grenoble, France
| | - T V D Ngoc
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, INRAE, IGE, 38000 Grenoble, France
| | - P Dominutti
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, INRAE, IGE, 38000 Grenoble, France
| | - S Darfeuil
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, INRAE, IGE, 38000 Grenoble, France
| | - A Albinet
- Institut national de l'environnement industriel et des risques (Ineris), 60550 Verneuil en Halatte, France
| | - D Srivastava
- Institut national de l'environnement industriel et des risques (Ineris), 60550 Verneuil en Halatte, France
| | - A Karanasiou
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - G Lanzani
- Environmental Monitoring Sector, Arpa Lombardia, Via Rosellini 17, Milan, 20124, Italy
| | - A Alastuey
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - X Querol
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
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Balkrishna A, Rana M, Mishra S, Srivastava D, Bhardwaj R, Singh S, Rajput SK, Arya V. Incredible Combination of Lifestyle Modification and Herbal Remedies for Polycystic Ovarian Syndrome Management. Evid Based Complement Alternat Med 2023; 2023:3705508. [PMID: 37383339 PMCID: PMC10299884 DOI: 10.1155/2023/3705508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/30/2023]
Abstract
A relatively frequent endocrine-metabolic illness called polycystic ovarian syndrome (PCOS) is characterized by polycystic ovaries, persistent anovulation, and hyperandrogenism, which cause symptoms such as irregular menstruation, infertility, and hirsutism. PCOS is linked to obesity, insulin resistance, and increased amounts of androgens, or male hormones. The sedentary lifestyle, dietary fluctuations, inactivity, and stress are other contributing variables. According to estimates from India in 2021, around 22.5% of women, or one in five Indian women, suffer from PCOS. Evidence-based medical care for PCOS places a strong focus on a multidisciplinary approach, as standard pharmacological treatment frequently targets a single symptom, may be contraindicated, has adverse effects, and is ineffective in certain circumstances. However, long-term treatments have drawbacks and are likely to be ineffective, making complementary and alternative therapies a worthwhile choice. Yoga science is a thorough treatment plan for a healthy body and mind that may eradicate PCOS's primary causes, stress and obesity. Some common herbal remedies, including Foeniculum vulgare, Tinospora cordifolia, Asparagus racemosus, Ocimum tenuiflorum, Areca catechu, and Lepidium meyenii, have been highly regarded sources that have the benefits of lowering PCOS as well as having hypoglycemic and antiobesity effects. In light of existing literature, women with PCOS experienced symptomatic relief, improvement in hormonal balance, and the quality of life by utilizing yoga practices as well as herbal remedies. In conclusion, combining lifestyle modifications with herbal remedies can be used in the management of PCOS as a holistic approach. Therefore, this review opens a new window for researchers all across the world to validate such findings.
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Affiliation(s)
| | - Maneesha Rana
- Patanjali Herbal Research Department, Patanjali Herbal Research Institute, Haridwar 249405, Uttarakhand, India
| | - Shalini Mishra
- Patanjali Herbal Research Department, Patanjali Herbal Research Institute, Haridwar 249405, Uttarakhand, India
| | - Deepika Srivastava
- Patanjali Herbal Research Department, Patanjali Herbal Research Institute, Haridwar 249405, Uttarakhand, India
| | - Rohit Bhardwaj
- Department of Pharmaceutical Sciences, Gurukula Kangri (Deemed to be University), Haridwar, Uttarakhand 249404, India
| | - Shalini Singh
- Department of Pharmaceutical Sciences, Gurukula Kangri (Deemed to be University), Haridwar, Uttarakhand 249404, India
| | - Satyendra Kumar Rajput
- Department of Pharmaceutical Sciences, Gurukula Kangri (Deemed to be University), Haridwar, Uttarakhand 249404, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Herbal Research Institute, Haridwar 249405, Uttarakhand, India
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Balkrishna A, Singh S, Srivastava D, Mishra S, Sharma S, Mishra R, Arya V. A systematic review on traditional, ayurvedic, and herbal approaches to treat solar erythema. Int J Dermatol 2023; 62:322-336. [PMID: 35643834 DOI: 10.1111/ijd.16231] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 03/21/2022] [Accepted: 04/14/2022] [Indexed: 01/22/2023]
Abstract
Solar erythema is a kind of radiation burn that strikes living tissue, such as skin, that arises from overexposure to UV radiation often from the sun. Ordinary symptoms of solar erythema include reddish skin, specifically warm to touch, overall tiredness, hurting, and mild whirl. Sunscreen contains SPF value, which measures how much ultraviolet radiation is needed to cause sunburn on sunscreen-applied skin, which is proportional to the quantity of solar energy needed to cause sunburn on unprotected skin. Between 30 and 50 SPF value is sufficient to protect from sunburn, especially for the people who are more sensitive to sunburn. Sunscreen also protects from sun damage including dark spots and discoloration and helps to keep skin smooth, spotless, and more even. Chemical-based sunscreen is widely used because it effectively protects the skin from sun damage, but it clogs pores and can be problematic for sensitive skin as it can cause itching or stinging of the skin and pus in the hair follicles. On the other hand, herbal sunscreen absorbs light preferentially over the range of 280-320 mm without causing any harm to the skin and eyes. Ayurveda rejuvenates dull skin by regaining the skin's natural glow and radiance. This review concludes the damaging and harmful effects of UV rays, along with various traditional, ayurvedic, and herbal approaches to treat solar erythema naturally.
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Affiliation(s)
- Acharya Balkrishna
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India.,University of Patanjali, Patanjali Yogpeeth, Haridwar, India
| | - Shalini Singh
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India
| | - Deepika Srivastava
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India
| | - Shalini Mishra
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India
| | - Shivani Sharma
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India
| | - Rajesh Mishra
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India.,Patanjali Bhartiya Ayurvigyan Evam Anusandhan Sansthan, Haridwar, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, India.,University of Patanjali, Patanjali Yogpeeth, Haridwar, India
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Heitman N, Martino P, Srivastava D, Sunkara R, Rendl M. LB1012 Dermal sheath mechanosignaling activation of TGF-β controls progenitor death during hair follicle regression. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lanzafame GM, Srivastava D, Favez O, Bandowe BAM, Shahpoury P, Lammel G, Bonnaire N, Alleman LY, Couvidat F, Bessagnet B, Albinet A. One-year measurements of secondary organic aerosol (SOA) markers in the Paris region (France): Concentrations, gas/particle partitioning and SOA source apportionment. Sci Total Environ 2021; 757:143921. [PMID: 33261871 DOI: 10.1016/j.scitotenv.2020.143921] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Twenty-five biogenic and anthropogenic secondary organic aerosol (SOA) markers have been measured over a one-year period in both gaseous and PM10 phases in the Paris region (France). Seasonal and chemical patterns were similar to those previously observed in Europe, but significantly different from the ones observed in America and Asia due to dissimilarities in source precursor emissions. Nitroaromatic compounds showed higher concentrations in winter due to larger emissions of their precursors originating from biomass combustion used for residential heating purposes. Among the biogenic markers, only isoprene SOA marker concentrations increased in summer while pinene SOA markers did not display any clear seasonal trend. The measured SOA markers, usually considered as semi-volatiles, were mainly associated to the particulate phase, except for the nitrophenols and nitroguaiacols, and their gas/particle partitioning (GPP) showed a low temperature and OM concentrations dependency. An evaluation of their GPP with thermodynamic model predictions suggested that apart from equilibrium partitioning between organic phase and air, the GPP of the markers is affected by processes suppressing volatility from a mixed organic and inorganic phase, such as enhanced dissolution in aerosol aqueous phase and non-equilibrium conditions. SOA marker concentrations were used to apportion secondary organic carbon (SOC) sources applying both, an improved version of the SOA-tracer method and positive matrix factorization (PMF) Total SOC estimations agreed very well between both models, except in summer and during a highly processed Springtime PM pollution event in which systematic underestimation by the SOA tracer method was evidenced. As a first approach, the SOA-tracer method could provide a reliable estimation of the average SOC concentrations, but it is limited due to the lack of markers for aged SOA together with missing SOA/SOC conversion fractions for several sources.
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Affiliation(s)
- G M Lanzafame
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France; Sorbonne Universités, UPMC, PARIS, France
| | - D Srivastava
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France
| | - O Favez
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France
| | - B A M Bandowe
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, Mainz, Germany
| | - P Shahpoury
- Environment and Climate Change Canada, Air Quality Processes Research Section, Toronto, Canada
| | - G Lammel
- Max Planck Institute for Chemistry, Multiphase Chemistry Department, Mainz, Germany; Masaryk University, RECETOX, Brno, Czech Republic
| | - N Bonnaire
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - L Y Alleman
- IMT Lille Douai, SAGE, Université de Lille, 59000 Lille, France
| | - F Couvidat
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France
| | - B Bessagnet
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France
| | - A Albinet
- Ineris, Parc Technologique Alata, Verneuil-en-Halatte, France.
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Srivastava D, Daellenbach KR, Zhang Y, Bonnaire N, Chazeau B, Perraudin E, Gros V, Lucarelli F, Villenave E, Prévôt ASH, El Haddad I, Favez O, Albinet A. Comparison of five methodologies to apportion organic aerosol sources during a PM pollution event. Sci Total Environ 2021; 757:143168. [PMID: 33143914 DOI: 10.1016/j.scitotenv.2020.143168] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Abstract
This study presents a comparison of five methodologies to apportion primary (POA) and secondary organic aerosol (SOA) sources from measurements performed in the Paris region (France) during a highly processed PM pollution event. POA fractions, estimated from EC-tracer method and positive matrix factorization (PMF) analyses, conducted on measurements from PM10 filters, aerosol chemical speciation monitor (ACSM) and offline aerosol mass spectrometry (AMS), were all comparable (2.2-3.7 μg m-3 as primary organic carbon (POC)). Associated relative uncertainties (measurement + model) on POC estimations ranged from 8 to 50%. The best apportionment of primary traffic OA was achieved using key markers (EC and 1-nitropyrene) in the chemical speciation-based PMF showing more pronounced rush-hour peaks and greater correlation with NOx than other traffic related POC factors. All biomass burning-related factors were in good agreement, with a typical diel profile and a night-time increase linked to residential heating. If PMF applied to ACSM data showed good agreement with other PMF outputs corrected from dust-related factors (coarse PM), discrepancies were observed between individual POA factors (traffic, biomass burning) and directly comparable SOA factors and highly oxidized OA. Similar secondary organic carbon (SOC) concentrations (3.3 ± 0.1 μg m-3) were obtained from all approaches, except the SOA-tracer method (1.8 μg m-3). Associated uncertainties ranged from 14 to 52% with larger uncertainties obtained for PMF-chemical data, EC- and SOA-tracer methods. This latter significantly underestimated total SOA loadings, even including biomass burning SOA, due to missing SOA classes and precursors. None of the approaches was able to identify the formation mechanisms and/or precursors responsible for the highly oxidized SOA fraction associated with nitrate- and/or sulfate-rich aerosols (35% of OA). We recommend the use of a combination of different methodologies to apportion the POC/SOC concentrations/contributions to get the highest level of confidence in the estimates obtained.
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Affiliation(s)
- D Srivastava
- Ineris, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France; CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France.
| | | | - Y Zhang
- Ineris, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France
| | - N Bonnaire
- LSCE - UMR8212, CNRS-CEA-UVSQ, 91191 Gif-sur-Yvette, France
| | - B Chazeau
- Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
| | - E Perraudin
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - V Gros
- LSCE - UMR8212, CNRS-CEA-UVSQ, 91191 Gif-sur-Yvette, France
| | - F Lucarelli
- University of Florence, Dipartimento di Fisica Astronomia, 50019, Sesto Fiorentino, Italy
| | - E Villenave
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - A S H Prévôt
- Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
| | - I El Haddad
- Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
| | - O Favez
- Ineris, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France
| | - A Albinet
- Ineris, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France.
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Ankaiah D, Mitra S, Srivastava D, Sivagnanavelmurugan M, Ayyanna R, Jha N, Venkatesan A. Probiotic characterization of bacterial strains from fermented South Indian tomato pickle and country chicken intestine having antioxidative and antiproliferative activities. J Appl Microbiol 2021; 131:949-963. [PMID: 33404172 DOI: 10.1111/jam.14991] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/07/2020] [Accepted: 12/28/2020] [Indexed: 12/31/2022]
Abstract
AIM The present study aims to evaluate the potential antioxidant and antiproliferative properties of probiotic bacterial isolates Weissella cibaria p3B, Bacillus subtilis CS, and Bacillus tequilensis CL, isolated from South Indian fermented tomato pickle (homemade) and gut content of indigenous country chicken. METHODS AND RESULTS The bacterial isolates exhibited antimicrobial activity against food-borne, human pathogenic bacteria, along with better survival under different bile and acidic conditions, hydrophobicity towards several hydrocarbons, and adherence to intestinal epithelial cells (INT-407 cells). Also, the intact cell (IC) mixture of the three species showed better DPPH, ABTS, and Fe2+ chelating activity as compared to the individual IC or cell extract (CE) activity. Among the three bacterial species, W. cibaria p3B revealed maximum antiproliferative activity against HeLa and Caco-2 cancer cells, all of which were nontoxic to INT-407 cells. Apart from being non-hemolytic, the bacterial isolates did not display any necrotic inhibition in HeLa and Caco-2 cells. The cell free supernatant (CFS) of the three bacterial isolates were tested for the production of antimicrobial peptides or bacteriocins. It found that the CFS of bacterial isolates was stable at various temperature, pH and sensitive to proteolytic enzymes confirms protenoius in nature of the antimicrobil peptides or bacteriocins. CONCLUSION The bacterial isolates showed promising antimicrobial, antioxidant as well as antiproliferative activities with better survival ability at different pH and bile concentrations. The three bacterial isolates were able to produce potential antimicrobial peptides or bacteriocins. SIGNIFICANCE AND IMPACT OF THE STUDY These results indicate better compatibility of our bacterial isolates against synthetic drugs to avoid adverse side effects and can be processed as dietary supplements against food and human pathogens. They can also provide antioxidative and antiproliferative benefits to humans and animals.
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Affiliation(s)
- D Ankaiah
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - S Mitra
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - D Srivastava
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - M Sivagnanavelmurugan
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - R Ayyanna
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - N Jha
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - A Venkatesan
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
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Foo I, Macfarlane AJR, Srivastava D, Bhaskar A, Barker H, Knaggs R, Eipe N, Smith AF. The use of intravenous lidocaine for postoperative pain and recovery: international consensus statement on efficacy and safety. Anaesthesia 2020; 76:238-250. [PMID: 33141959 DOI: 10.1111/anae.15270] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
Intravenous lidocaine is used widely for its effect on postoperative pain and recovery but it can be, and has been, fatal when used inappropriately and incorrectly. The risk-benefit ratio of i.v. lidocaine varies with type of surgery and with patient factors such as comorbidity (including pre-existing chronic pain). This consensus statement aims to address three questions. First, does i.v. lidocaine effectively reduce postoperative pain and facilitate recovery? Second, is i.v. lidocaine safe? Third, does the fact that i.v. lidocaine is not licensed for this indication affect its use? We suggest that i.v. lidocaine should be regarded as a 'high-risk' medicine. Individual anaesthetists may feel that, in selected patients, i.v. lidocaine may be beneficial as part of a multimodal peri-operative pain management strategy. This approach should be approved by hospital medication governance systems, and the individual clinical decision should be made with properly informed consent from the patient concerned. If i.v. lidocaine is used, we recommend an initial dose of no more than 1.5 mg.kg-1 , calculated using the patient's ideal body weight and given as an infusion over 10 min. Thereafter, an infusion of no more than 1.5 mg.kg-1 .h-1 for no longer than 24 h is recommended, subject to review and re-assessment. Intravenous lidocaine should not be used at the same time as, or within the period of action of, other local anaesthetic interventions. This includes not starting i.v. lidocaine within 4 h after any nerve block, and not performing any nerve block until 4 h after discontinuing an i.v. lidocaine infusion.
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Affiliation(s)
- I Foo
- Western General Infirmary, Edinburgh, UK
| | | | | | - A Bhaskar
- Imperial College Healthcare NHS Trust, London, UK
| | - H Barker
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
| | - R Knaggs
- University of Nottingham, Nottingham, UK
| | - N Eipe
- Ottowa Hospital, Ottowa, Canada
| | - A F Smith
- Royal Lancaster Infirmary, Lancaster, UK
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Lubas MM, Mandrell BN, Ehrhardt MJ, Ness KK, Srivastava D, Robison LL, Hudson MM, Krull KR, Brinkman TM. 1015 Sleep Duration and Physical and Mental Health Among Adult Survivors of Childhood Cancer: Results from the St. Jude Lifetime Cohort. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Sleep disturbances are prevalent among adult survivors of childhood cancer, though little is known about associations between sleep and health in this vulnerable population.
Methods
Survivors recruited from the St. Jude Lifetime Cohort (n=911; 52% female; mean age 34 years; 26 years post-diagnosis) completed surveys assessing habitual sleep patterns and mental health and underwent comprehensive physical examinations. A subset of survivors (n=491) completed sleep actigraphy. Short sleep duration was defined as sleeping <7 hours per night, assessed via self-report or actigraphy. Clinically-assessed health outcomes were defined as grade ≥2 using modified CTCAE criteria for cardiac, pulmonary, and renal conditions. Anxiety and depression were defined as scores ≥90th percentile on the Brief Symptom Inventory-18. Covariates included childhood cancer treatment exposures, demographics, body mass index, and physical inactivity. Separate logistic or modified Poisson (common outcomes) regression models were computed for each health category to estimate odds ratios (OR) or relative risks (RR) and 95% confidence intervals (CI).
Results
Self-report and actigraphy-assessed short sleep was identified in 44% and 42% of survivors, respectively. However, these measures were weakly correlated (r=0.23). In adjusted multivariable models, self-reported short sleep was associated with higher risk of pulmonary conditions (RR=1.3, 95% CI=1.1-1.7), depression (OR=2.6, 95% CI=1.4-5.1) and anxiety (OR=3.4, 95% CI=1.6-6.8), while associations with cardiac (RR=1.10, 95% CI=0.94-1.30) and renal conditions (OR=1.30, 95% CI=0.79-2.13) were not significant. There were no significant associations between actigraphy-assessed short sleep and any of the health outcomes.
Conclusion
Habitual self-reported short sleep was associated with clinically ascertained adverse health outcomes. Although the temporality of these associations cannot be determined in this cross-sectional study, sleep is a modifiable health behavior and improving sleep may improve health in survivors. Measures of self-reported sleep may have unique value when assessing the relationship between sleep and health.
Support
CA225590, K. Krull Principal Investigator; CA195547, M. Hudson and L. Robison Principal Investigators; CA21765, C. Roberts, Principal Investigator
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Affiliation(s)
- M M Lubas
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - B N Mandrell
- St. Jude Children’s Research Hospital, Department of Pediatric Medicine, Memphis, TN
| | - M J Ehrhardt
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - K K Ness
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - D Srivastava
- St. Jude Children’s Research Hospital, Department of Biostatistics, Memphis, TN
| | - L L Robison
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - M M Hudson
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - K R Krull
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
| | - T M Brinkman
- St. Jude Children’s Research Hospital, Department of Epidemiology and Cancer Control, Memphis, TN
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10
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Abstract
The synchondrosis in the cranial base is an important growth center for the craniofacial region. Abnormalities in the synchondroses affect the development of adjacent regions, including the craniofacial skeleton. Here, we report that the transcription factor TBX1, the candidate gene for DiGeorge syndrome, is expressed in mesoderm-derived chondrocytes and plays an essential and specific role in spheno-occipital synchondrosis development by inhibiting the expression of genes involved in chondrocyte hypertrophy and osteogenesis. In Tbx1-deficient mice, the spheno-occipital synchondrosis was completely mineralized at birth. TBX1 interacts with RUNX2, a master molecule of osteoblastogenesis and a regulator of chondrocyte maturation, and suppresses its transcriptional activity. Indeed, deleting Tbx1 triggers accelerated mineralization due to accelerated chondrocyte differentiation, which is associated with ectopic expression of downstream targets of RUNX2 in the spheno-occipital synchondrosis. These findings reveal that TBX1 acts as a regulator of chondrocyte maturation and osteogenesis during the spheno-occipital synchondrosis development. Thus, the tight regulation of endochondral ossification by TBX1 is crucial for the normal progression of chondrocyte differentiation in the spheno-occipital synchondrosis.
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Affiliation(s)
- N Funato
- Department of Signal Gene Regulation, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Research Core, Tokyo Medical and Dental University, Tokyo, Japan
| | - D Srivastava
- Gladstone Institute of Cardiovascular Disease and Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA
| | - S Shibata
- Department of Maxillofacial Anatomy, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Yanagisawa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Japan
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11
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Srivastava D, Favez O, Petit JE, Zhang Y, Sofowote UM, Hopke PK, Bonnaire N, Perraudin E, Gros V, Villenave E, Albinet A. Speciation of organic fractions does matter for aerosol source apportionment. Part 3: Combining off-line and on-line measurements. Sci Total Environ 2019; 690:944-955. [PMID: 31302558 DOI: 10.1016/j.scitotenv.2019.06.378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/13/2019] [Accepted: 06/23/2019] [Indexed: 06/10/2023]
Abstract
The present study proposes an advanced methodology to refine the source apportionment of organic aerosol (OA). This methodology is based on the combination of offline and online datasets in a single Positive Matrix Factorization (PMF) analysis using the multilinear engine (ME-2) algorithm and a customized time synchronization procedure. It has been applied to data from measurements conducted in the Paris region (France) during a PM pollution event in March 2015. Measurements included OA ACSM (Aerosol Chemical Speciation Monitor) mass spectra and specific primary and secondary organic molecular markers from PM10 filters on their original time resolution (30 min for ACSM and 4 h for PM10 filters). Comparison with the conventional PMF analysis of the ACSM OA dataset (PMF-ACSM) showed very good agreement for the discrimination between primary and secondary OA fractions with about 75% of the OA mass of secondary origin. Furthermore, the use of the combined datasets allowed the deconvolution of 3 primary OA (POA) factors and 7 secondary OA (SOA) factors. A clear identification of the source/origin of 54% of the total SOA mass could be achieved thanks to specific molecular markers. Specifically, 28% of that fraction was linked to combustion sources (biomass burning and traffic emissions). A clear identification of primary traffic OA was also obtained using the PMF-combined analysis while PMF-ACSM only gave a proxy for this OA source in the form of total hydrocarbon-like OA (HOA) mass concentrations. In addition, the primary biomass burning-related OA source was explained by two OA factors, BBOA and OPOA-like BBOA. This new approach has showed undeniable advantages over the conventional approaches by providing valuable insights into the processes involved in SOA formation and their sources. However, the origins of highly oxidized SOA could not be fully identified due to the lack of specific molecular markers for such aged SOA.
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Affiliation(s)
- D Srivastava
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France; CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France.
| | - O Favez
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France
| | - J-E Petit
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - Y Zhang
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France; LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - U M Sofowote
- Environmental Monitoring and Reporting Branch, Ontario Ministry of the Environment, Conservation and Parks, Toronto, Ontario M9P 3V6, Canada
| | - P K Hopke
- Center for Air Resources Engineering and Science, Clarkson University, Potsdam, NY, USA; Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - N Bonnaire
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - E Perraudin
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - V Gros
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - E Villenave
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - A Albinet
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France.
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12
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Sabin ND, Cheung YT, Reddick WE, Bhojwani D, Liu W, Glass JO, Brinkman TM, Hwang SN, Srivastava D, Pui CH, Robison LL, Hudson MM, Krull KR. The Impact of Persistent Leukoencephalopathy on Brain White Matter Microstructure in Long-Term Survivors of Acute Lymphoblastic Leukemia Treated with Chemotherapy Only. AJNR Am J Neuroradiol 2018; 39:1919-1925. [PMID: 30213807 DOI: 10.3174/ajnr.a5791] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/19/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Survivors of acute lymphoblastic leukemia are at risk for neurocognitive deficits and leukoencephalopathy. We performed a longitudinal assessment of leukoencephalopathy and its associations with long-term brain microstructural white matter integrity and neurocognitive outcomes in survivors of childhood acute lymphoblastic leukemia treated on a modern chemotherapy-only protocol. MATERIALS AND METHODS One hundred seventy-three survivors of acute lymphoblastic leukemia (49% female), treated on a chemotherapy-only protocol, underwent brain MR imaging during active therapy and repeat imaging and neurocognitive testing at follow-up (median, 13.5 years of age; interquartile range, 10.7-17.6 years; median time since diagnosis, 7.5 years; interquartile range, 6.3-9.1 years). Persistence of leukoencephalopathy was examined in relation to demographic and treatment data and to brain DTI in major fiber tracts and neurocognitive testing at follow-up. RESULTS Leukoencephalopathy was found in 52 of 173 long-term survivors (30.0%) and persisted in 41 of 52 (78.8%) who developed it during therapy. DTI parameters were associated with leukoencephalopathy in multiple brain regions, including the corona radiata (fractional anisotropy, P = .001; mean diffusivity, P < .001), superior longitudinal fasciculi (fractional anisotropy, P = .02; mean diffusivity, P < .001), and superior fronto-occipital fasciculi (fractional anisotropy, P = .006; mean diffusivity, P < .001). Mean diffusivity was associated with neurocognitive impairment including in the genu of the corpus callosum (P = .04), corona radiata (P = .02), and superior fronto-occipital fasciculi (P = .02). CONCLUSIONS Leukoencephalopathy during active therapy and neurocognitive impairment at long-term follow-up are associated with microstructural white matter integrity. DTI may be more sensitive than standard MR imaging for detection of clinically consequential white matter abnormalities in childhood acute lymphoblastic leukemia survivors treated with chemotherapy and in children undergoing treatment.
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Affiliation(s)
- N D Sabin
- From the Departments of Diagnostic Imaging (N.D.S., W.E.R., J.O.G., S.N.H.)
| | - Y T Cheung
- Epidemiology and Cancer Control (Y.T.C., T.M.B., L.L.R., M.M.H., K.R.K.)
| | - W E Reddick
- From the Departments of Diagnostic Imaging (N.D.S., W.E.R., J.O.G., S.N.H.)
| | - D Bhojwani
- Children's Center for Cancer and Blood Diseases (D.B.), Children's Hospital Los Angeles, Los Angeles, California
| | - W Liu
- Biostatistics (W.L., D.S.)
| | - J O Glass
- From the Departments of Diagnostic Imaging (N.D.S., W.E.R., J.O.G., S.N.H.)
| | - T M Brinkman
- Epidemiology and Cancer Control (Y.T.C., T.M.B., L.L.R., M.M.H., K.R.K.)
- Psychology (T.M.B., K.R.K.)
| | - S N Hwang
- From the Departments of Diagnostic Imaging (N.D.S., W.E.R., J.O.G., S.N.H.)
| | | | - C-H Pui
- Oncology (C.-H.P., M.M.H.), St. Jude Children's Research Hospital, Memphis, Tennessee
| | - L L Robison
- Epidemiology and Cancer Control (Y.T.C., T.M.B., L.L.R., M.M.H., K.R.K.)
| | - M M Hudson
- Epidemiology and Cancer Control (Y.T.C., T.M.B., L.L.R., M.M.H., K.R.K.)
- Oncology (C.-H.P., M.M.H.), St. Jude Children's Research Hospital, Memphis, Tennessee
| | - K R Krull
- Epidemiology and Cancer Control (Y.T.C., T.M.B., L.L.R., M.M.H., K.R.K.)
- Psychology (T.M.B., K.R.K.)
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13
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Srivastava D, Favez O, Bonnaire N, Lucarelli F, Haeffelin M, Perraudin E, Gros V, Villenave E, Albinet A. Speciation of organic fractions does matter for aerosol source apportionment. Part 2: Intensive short-term campaign in the Paris area (France). Sci Total Environ 2018; 634:267-278. [PMID: 29627550 DOI: 10.1016/j.scitotenv.2018.03.296] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/23/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
The present study aimed at performing PM10 source apportionment, using positive matrix factorization (PMF), based on filter samples collected every 4h at a sub-urban station in the Paris region (France) during a PM pollution event in March 2015 (PM10>50μgm-3 for several consecutive days). The PMF model allowed to deconvolve 11 source factors. The use of specific primary and secondary organic molecular markers favoured the determination of common sources such as biomass burning and primary traffic emissions, as well as 2 specific biogenic SOA (marine+isoprene) and 3 anthropogenic SOA (nitro-PAHs+oxy-PAHs+phenolic compounds oxidation) factors. This study is probably the first one to report the use of methylnitrocatechol isomers as well as 1-nitropyrene to apportion secondary OA linked to biomass burning emissions and primary traffic emissions, respectively. Secondary organic carbon (SOC) fractions were found to account for 47% of the total OC. The use of organic molecular markers allowed the identification of 41% of the total SOC composed of anthropogenic SOA (namely, oxy-PAHs, nitro-PAHs and phenolic compounds oxidation, representing 15%, 9%, 11% of the total OC, respectively) and biogenic SOA (marine+isoprene) (6% in total). Results obtained also showed that 35% of the total SOC originated from anthropogenic sources and especially PAH SOA (oxy-PAHs+nitro-PAHs), accounting for 24% of the total SOC, highlighting its significant contribution in urban influenced environments. Anthropogenic SOA related to nitro-PAHs and phenolic compounds exhibited a clear diurnal pattern with high concentrations during the night indicating the prominent role of night-time chemistry but with different chemical processes involved.
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Affiliation(s)
- D Srivastava
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France; CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France.
| | - O Favez
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France
| | - N Bonnaire
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - F Lucarelli
- University of Florence, Dipartimento di Fisica Astronomia, 50019 Sesto Fiorentino, Italy
| | - M Haeffelin
- Institut Pierre Simon Laplace, CNRS, Ecole Polytechnique, 91128 Palaiseau, France
| | - E Perraudin
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - V Gros
- LSCE - UMR8212, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
| | - E Villenave
- CNRS, EPOC, UMR 5805 CNRS, 33405 Talence, France; Université de Bordeaux, EPOC, UMR 5805 CNRS, 33405 Talence, France
| | - A Albinet
- INERIS, Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France.
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14
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Small C, Kemp H, Haywood K, Srivastava D. Current variation in the practice of measuring post-operative pain outcomes: time for a national consensus? Br J Anaesth 2018. [DOI: 10.1016/j.bja.2017.11.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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15
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Daniel LC, Wang M, Srivastava D, Schwartz L, Brinkman T, Edelstein K, Mulrooney D, Zhou E, Howell R, Gibson T, Leisenring W, Armstrong GT, Krull K. 0863 Sleep Behaviors And Patterns In Adult Survivors Of Childhood Cancers: A Report From The Childhood Cancer Survivor Study (CCSS). Sleep 2018. [DOI: 10.1093/sleep/zsy061.862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - M Wang
- St. Jude Children’s Research Hospital, Memphis, TN
| | - D Srivastava
- St. Jude Children’s Research Hospital, Memphis, TN
| | - L Schwartz
- The Children’s Hospital of Philadelphia, Philadelphia, PA
| | - T Brinkman
- St. Jude Children’s Research Hospital, Memphis, TN
| | - K Edelstein
- Princess Margaret Cancer Center, Toronto, ON, CANADA
| | - D Mulrooney
- St. Jude Children’s Research Hospital, Memphis, TN
| | - E Zhou
- Havard Medical School, Boston, MA
| | - R Howell
- MD Anderston Cancer Center, Houston, TX
| | - T Gibson
- St. Jude Children’s Research Hospital, Memphis, TN
| | - W Leisenring
- Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | - K Krull
- St. Jude Children’s Research Hospital, Memphis, TN
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16
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Verma S, Rao B, Srivastava A, Srivastava D, Kaul R, Singh B. A facile synthesis of broad plasmon wavelength tunable silver nanoparticles in citrate aqueous solutions by laser ablation and light irradiation. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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17
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Singh H, Maurya RK, Kapoor P, Sharma P, Srivastava D. Subjective and objective evaluation of frontal smile esthetics in patients with facial asymmetry-a comparative cross-sectional study. Orthod Craniofac Res 2016; 20:8-20. [PMID: 27862935 DOI: 10.1111/ocr.12135] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2016] [Indexed: 11/27/2022]
Abstract
AIM AND OBJECTIVES To analyze the relationship between subjective and objective evaluations of pre-treatment posed smiles in patients with facial asymmetry and to assess the influence of dentofacial structures involved in asymmetry on the perception of smile attractiveness. SAMPLE Thirty-five patients (25 males and 10 females) between 18 and 25 years of age with facial asymmetry were selected. MATERIALS AND METHODS Pre-treatment clinical photographs of posed smiles were subjectively evaluated by a panel of 20 orthodontists, 20 oral surgeons, and 20 laypersons. A customized Smile Mesh program was used for objective evaluation of the same smiles. Direct comparison among three smile groups (unattractive, slightly attractive, and attractive) for different Smile Mesh measurements was carried out using two-way anova test. Additionally, linear regression was performed to evaluate whether these measurements could predict the attractiveness of captured smiles. RESULTS Patients with 'slightly attractive' smiles had a significantly greater distance between the incisal margin of the maxillary central incisor and the lower lip during smiling. The Smile Index was significantly greater in attractive smiles. However, based on the coefficients of linear regression, no objectively gathered measurement could predict smile attractiveness. CONCLUSIONS Attractiveness or unattractiveness of smiles in patients with facial asymmetry could not be predicted by any measurement of Smile Mesh. The presence of facial asymmetry did not significantly influence the perception of smile esthetics.
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Affiliation(s)
- H Singh
- Department of Orthodontics and Craniofacial Orthopedics, ESIC Dental College and Hospital, Delhi, India
| | - R K Maurya
- Sultania Infantry Line, Bhopal Military Station, Bhopal, India
| | - P Kapoor
- Department of Orthodontics and Craniofacial Orthopedics, ESIC Dental College and Hospital, Delhi, India
| | - P Sharma
- Department of Orthodontics and Craniofacial Orthopedics, ESIC Dental College and Hospital, Delhi, India
| | - D Srivastava
- Department of Oral and Cranio-Maxillofacial Surgery, ESIC Dental College and Hospital, Delhi, India
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18
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Srivastava D, Azough F, Freer R, Combe E, Funahashi R, Kepaptsoglou DM, Ramasse QM, Molinari M, Yeandel SR, Baran JD, Parker SC. Crystal structure and thermoelectric properties of Sr-Mo substituted CaMnO 3: a combined experimental and computational study. J Mater Chem C Mater 2015; 3:12245-12259. [PMID: 28496979 PMCID: PMC5361175 DOI: 10.1039/c5tc02318a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/30/2015] [Indexed: 06/07/2023]
Abstract
A combination of experimental and computational techniques has been employed to study doping effects in perovskite CaMnO3. High quality Sr-Mo co-substituted CaMnO3 ceramics were prepared by the conventional mixed oxide route. Crystallographic data from X-ray and electron diffraction showed an orthorhombic to tetragonal symmetry change on increasing the Sr content, suggesting that Sr widens the transition temperature in CaMnO3 preventing phase transformation-cracking on cooling after sintering, enabling the fabrication of high density ceramics. Atomically resolved imaging and analysis showed a random distribution of Sr in the A-site of the perovskite structure and revealed a boundary structure of 90° rotational twin boundaries across {101}orthorhombic; the latter are predominant phonon scattering sources to lower the thermal conductivity as suggested by molecular dynamics calculations. The effect of doping on the thermoelectric properties was evaluated. Increasing Sr substitution reduces the Seebeck coefficient but the power factor remains high due to improved densification by Sr substitution. Mo doping generates additional charge carriers due to the presence of Mn3+ in the Mn4+ matrix, reducing electrical resistivity. The major impact of Sr on thermoelectric behaviour is the reduction of the thermal conductivity as shown experimentally and by modelling. Strontium containing ceramics showed thermoelectric figure of merit (ZT) values higher than 0.1 at temperatures above 850 K. Ca0.7Sr0.3Mn0.96Mo0.04O3 ceramics exhibit enhanced properties with S1000K = -180 μV K-1, ρ1000K = 5 × 10-5 Ωm, k1000K = 1.8 W m-1 K-1 and ZT ≈ 0.11 at 1000 K.
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Affiliation(s)
- D Srivastava
- School of Materials , University of Manchester , Manchester , M13 9PL , UK .
| | - F Azough
- School of Materials , University of Manchester , Manchester , M13 9PL , UK .
| | - R Freer
- School of Materials , University of Manchester , Manchester , M13 9PL , UK .
| | - E Combe
- National Institute of Advanced Industrial Science and Technology , Midorigaoka , Ikeda , Osaka 563-8577 , Japan
| | - R Funahashi
- National Institute of Advanced Industrial Science and Technology , Midorigaoka , Ikeda , Osaka 563-8577 , Japan
| | - D M Kepaptsoglou
- SuperSTEM Laboratory , SciTech Daresbury Campus , Daresbury WA4 4AD , UK
| | - Q M Ramasse
- SuperSTEM Laboratory , SciTech Daresbury Campus , Daresbury WA4 4AD , UK
| | - M Molinari
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , UK .
| | - S R Yeandel
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , UK .
| | - J D Baran
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , UK .
| | - S C Parker
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , UK .
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Kulshrestha N, Srivastava D, Ghatak T, Yadav MS, Samanta S. An unusual case of recurrent urinary tract infection. Indian J Nephrol 2015; 25:392-3. [PMID: 26664226 PMCID: PMC4663788 DOI: 10.4103/0971-4065.161027] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- N Kulshrestha
- Department of Microbiology, KGMU, Lucknow, Uttar Pradesh, India
| | - D Srivastava
- Department of Anesthesia and Critical Care, IIMS and R, Lucknow, Uttar Pradesh, India
| | - T Ghatak
- Department of Anesthesia and Critical Care, IIMS and R, Lucknow, Uttar Pradesh, India
| | - M S Yadav
- Department of Urology, KGMU, Lucknow, Uttar Pradesh, India
| | - S Samanta
- Department of Critical Care Medicine, SGPGIMS, Lucknow, Uttar Pradesh, India
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20
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Srivastava D, Shanker A. Identification of Simple Sequence Repeats in Chloroplast Genomes of Magnoliids Through Bioinformatics Approach. Interdiscip Sci 2015; 8:327-336. [PMID: 26471998 DOI: 10.1007/s12539-015-0129-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 01/26/2015] [Revised: 06/11/2015] [Accepted: 09/30/2015] [Indexed: 10/22/2022]
Abstract
Basal angiosperms or Magnoliids is an important clade of commercially important plants which mainly include spices and edible fruits. In this study, 17 chloroplast genome sequences belonging to clade Magnoliids were screened for the identification of chloroplast simple sequence repeats (cpSSRs). Simple sequence repeats or microsatellites are short stretches of DNA up to 1-6 base pair in length. These repeats are ubiquitous and play important role in the development of molecular markers and to study the mapping of traits of economic, medical or ecological interest. A total of 479 SSRs were detected, showing average density of 1 SSR/6.91 kb. Depending on the repeat units, the length of SSRs ranged from 12 to 24 bp for mono-, 12 to 18 bp for di-, 12 to 26 bp for tri-, 12 to 24 bp for tetra-, 15 bp for penta- and 18 bp for hexanucleotide repeats. Mononucleotide repeats were the most frequent (207, 43.21 %) followed by tetranucleotide repeats (130, 27.13 %). Penta- and hexanucleotide repeats were least frequent or absent in these chloroplast genomes.
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Affiliation(s)
- Deepika Srivastava
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Banasthali, Rajasthan, 304022, India
| | - Asheesh Shanker
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Banasthali, Rajasthan, 304022, India.
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Srivastava D, Dhakad U, Das S, Wakhlu A, Kumar P, Nolkha N, Sharma A, Bhadu D, Sharma M. Bone Mineral density levels in patients of ankylosing spondylitis – An observational short study. Indian Journal of Rheumatology 2014. [DOI: 10.1016/j.injr.2014.10.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Srivastava D, Ghoshal U, Mittal RD, Ghoshal UC. Associations between IL-1RA polymorphisms and small intestinal bacterial overgrowth among patients with irritable bowel syndrome from India. Neurogastroenterol Motil 2014; 26:1408-16. [PMID: 25073651 DOI: 10.1111/nmo.12399] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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] [Received: 05/27/2013] [Accepted: 06/18/2014] [Indexed: 01/08/2023]
Abstract
BACKGROUND Low-grade inflammation (controlled by pro and anti-inflammatory molecules), induced by gut microbes in patients with small intestinal bacterial overgrowth (SIBO), may be associated with irritable bowel syndrome (IBS). Polymorphisms of IL-RA gene (anti-inflammatory) was evaluated in IBS and healthy subjects (HS); small intestinal mucosal IL-1α and β levels (pro-inflammatory) in relation to the presence of SIBO were evaluated in a subset of patients. METHODS Two hundred and twenty-one IBS patients and 273 age- and gender-matched HS were included. Exactly 209 of 221 patients (Rome III) and 273 HS were genotyped (PCR) for IL-1RA polymorphism. Mucosal IL-1α and β levels (pg/mg of biopsy) were estimated (ELISA) in 82/221 patients with and without SIBO (≥10(5) CFU/mL upper gut aspirate bacteria). KEY RESULTS Genotype 1/1 (IL-1RA over-producer) was less frequent among patients than controls (p = 0.007); genotypes 1/3 (p = 0.012, OR = 3.301, 95% CI = 1.31-8.35) and 2/3 (both under-producers; p = 0.009, OR = 7.703, 95% CI = 1.66-35.82) were commoner among IBS. Fifteen of 82 (18.3%) patients had SIBO. Levels of IL-1α and β were higher among patients with SIBO than without (IL-1α: 35.4 [20.1-66.8] vs 25.5 [4.2-65.3], p < 0.001; IL-1β: 206.8 [133.5-365.9] vs 93.1 [25.5-197.7], p < 0.001) and those with bloating than without (p = 0.012; p = 0.015). IL-1β was higher among patients with Bristol stool type 6 than those with type 1-2 (p = 0.002) and type 3-5 (p = 0.007). CONCLUSIONS & INFERENCES Polymorphisms 1/1 (IL-1RA over-producer) was infrequent and 1/3 and 2/3 (under-producers) frequent among IBS. Increased IL-1α and β levels were associated with SIBO. Increased IL-1β level was predominantly associated with bloating and loose stools (Bristol type 6).
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Affiliation(s)
- D Srivastava
- Department of Gastroenterology, Microbiology and Urology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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Gupta S, Misra R, Ghosh UK, Gupta V, Srivastava D. Comparison of foetomaternal circulation in normal pregnancies and pregnancy induced hypertension using color Doppler studies. Indian J Physiol Pharmacol 2014; 58:284-289. [PMID: 25906613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The aim of present study was to assess fetomaternal blood flows in normal and abnormal pregnancies using color Doppler indices. Subjects were divided into two groups as: Group A of 25 subjects of normal pregnancy as controls and group B of 25 subjects of pregnancy induced hypertension. All the subjects were lying in the age-group of 25-35 years and having 28 to 34 weeks of gestation; the patients were evaluated by detailed history and were subjected to complete general examination. Blood pressure was taken on two occasions at least 6 hours apart. Systemic examination and obstetrical examination was done in all subjects. All cases were subjected to pathological tests- Haemogram, Test for proteins in urine. Ultrasound assessment of fetal growth was done by measuring BPD (Biparietal diameter), HC (Head circumference), FL (Femur length) and AC (Abdominal circumference): Average gestational age and effective fetal weight was then calculated by ultrasound machine. Color Doppler was used to assess the various Doppler indices indices: Pulsatility index (PI), Resistive index (RI) and Systolic diastolic ratio (S/D ratio) in bilateral uterine, umbilical and middle cerebral arteries and compared to the standard normograms. Percentage of subjects having abnormal Doppler indices were calculated. Assessment of percentage of SGA (small for gestational age) fetuses was done in all the three groups. Decline in mean values of all Doppler indices was found with advancing gestational age in normal pregnancy suggesting decreased vascular resistance and increased blood flow in fetomaternal circulation. In pregnancy induced hypertensives, the mean values of Doppler indices showed a decline as in normal pregnancy but showed an increase (more than 2 S.D. of the mean) for that gestational age in comparison to the control group suggesting increased impedance to blood flow in uteroplacental and fetomaternal circulation. Umbilical artery Doppler indices were found to be the most sensitive indicator of uteroplacental and fetoplacental insufficiency in pregnancy induced hypertensives (P = 0.001). Thus we concluded that color Doppler can detect changes in fetomaternal circulation which correlate strongly with the fetal growth and therefore associated with pregnancy outcome.
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Nolkha N, Srivastava D, Wakhlu A, Dhakad U. Neuropathic arthropathy and syringomyelia complicating a case of ankylosing spondylitis with peripheral arthritis. Case Reports 2014; 2014:bcr-2014-205604. [DOI: 10.1136/bcr-2014-205604] [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: 11/03/2022] Open
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Liu APY, Shing MMK, Yuen HL, Li CH, Ling SC, Luk CW, Ha SY, Li CK, Chan GCF, Tsui K, Gajjar A, Li C, Srivastava D, Broniscer A, Wetmore C, Kun LE, Merchant TE, Ellison DW, Orr B, Boop FA, Paul Klimo J, Ross JD, Robison LL, Armstrong GT, Walker D, Chu T, Shah A, Wilne S, Coleman M, Jaque FAM, Muthappan M, Law AJJ, Shing MMK, Chan GCF, Yuen HL, Lee RCH, Ling SC, Luk CW, Ha SY, Li CK, Mang OWS, Ngan RKC, Alston R, Estlin E, McCabe M, Birch J, Gattamaneni R, Kamaly-Asl I, Estlin E, Kamaly-Asl I, McCabe M, Birch J, Gattamaneni R, Alston R, Alston R, Estlin E, McCabe M, Gattamaneni R, Birch J, Kamaly-Asl I, Bendel A, Pond D, Woehrer A, Azizi AA, Heumesser R, Hackl M, Hainfellner JA, Dorfer C, Czech T, Chocholous M, Slavc I, Haberler C, Hami H, Ayoujil A, Habib F, Soulaymani A, Mokhtari A, Quyou A, Lim AHJ, Chan MY, Tan AM, Soh SY, Garba SM, Hami H, Zaki HM, Soulaymani A, Nouhou H, Quyou A, Owens-Pickle E, Smith A, Green AL, Schoettler M, Bandopadhayay P, Sauer N, Manley PE, Chi SN, Rodriguez-Galindo C, Kieran MW, Ribeiro K. EPIDEMIOLOGY. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou069] [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: 11/13/2022] Open
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Srivastava D, Chakrabarti O. Mahogunin-mediated α-tubulin ubiquitination via noncanonical K6 linkage regulates microtubule stability and mitotic spindle orientation. Cell Death Dis 2014; 5:e1064. [PMID: 24556679 PMCID: PMC3944237 DOI: 10.1038/cddis.2014.1] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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: 06/06/2013] [Revised: 12/19/2013] [Accepted: 12/19/2013] [Indexed: 12/26/2022]
Abstract
Mahogunin ring finger-1 (MGRN1) is a cytosolic ubiquitin ligase whose disruption or interaction with some isoforms of cytosolically exposed prion protein leads to spongiform neurodegeneration and also lack of which results in reduced embryonic viability due to mispatterning of the left–right (LR) axis during development. Here we demonstrate an interaction between the cytoskeletal protein α-tubulin and MGRN1. In cultured cell systems, loss of the ubiquitin E3 ligase activity of MGRN1 results in spindle misorientation and decreased α-tubulin polymerization, an effect also seen in primary cells. α-Tubulin was post-translationally modified by MGRN1 via noncanonical K6-linked polyubiquitination. This was significant because expression of catalytically inactive MGRN1 and/or ubiquitin mutant capable of only monoubiquitination resulted in similar mitotic spindle misorientation. The modulatory effect of MGRN1 was specific for α-tubulin and similar changes could not be detected in β- or γ-tubulin. However, catalytic inactivation of MGRN1 did not abrogate monoubiquitination of α-tubulin, thus unraveling a unique dual mode of ubiquitination by an unknown E3 ligase and MGRN1. MGRN1-mediated α-tubulin modification, and hence its stability, may highlight a key event in the LR patterning during embryogenesis.
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Affiliation(s)
- D Srivastava
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
| | - O Chakrabarti
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
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Kulkarni R, Mani Krishna K, Neogy S, Srivastava D, Ramadasan E, Dey G, Saibaba N, Jha S, Shriwastaw R, Anantharaman S. Determination of correlation parameters for evaluation of mechanical properties by Small Punch Test and Automated Ball Indentation Test for Zr–2.5% Nb pressure tube material. Nuclear Engineering and Design 2013. [DOI: 10.1016/j.nucengdes.2013.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Srivastava D, Gupta A, Srivastava B. Distraction osteogenesis in cleft lip and palate. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.586] [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: 11/28/2022]
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Gupta A, Srivastava D. Changing trends in maxillofacial trauma in Delhi and National Capital Region-multicentric retrospective study of 450 cases. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Fox DA, Srivastava D, Poblenz A, He L. Lead-induced Alterations in Gene Expression and Activity of Retinal cGMP PDE Results in Calcium Overload and Rod-selective Apoptosis. Toxicol In Vitro 2012; 12:597-8. [PMID: 20654449 DOI: 10.1016/s0887-2333(98)00044-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- D A Fox
- College of Optometry, Houston, USA; Department of Biochemical and Biophysical Sciences, University of Houston, Houston, TX 77204, USA
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Agarwal A, Pandey R, Das V, Pandey A, Agarwal S, Jain V, Srivastava D. O017 IMPROVING EFFICACY OF MISOPROSTOL FOR INDUCTION OF SECOND TRIMESTER ABORTIONS. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)60447-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Srivastava D, Joshi G, Somasundaram K, Mulherkar R. Mode of cell death associated with adenovirus-mediated suicide gene therapy in HNSCC tumor model. Anticancer Res 2011; 31:3851-3857. [PMID: 22110209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Adenoviral mediated suicide gene therapy has been shown to have a tumoricidal effect against a variety of tumor models. Although the efficacy of this treatment regimen has been verified, the molecular mechanism of Herpes simplex virus thymidine kinase gene (HSVtk)- and ganciclovir (GCV)-induced cell death is still not well established. MATERIALS AND METHODS The mode of cell death by adenoviral (Adv)-HSVtk/GCV was examined in the head and neck squamous cell carcinoma cell line, NT8e. RESULTS The cell death was independent of apoptotic gene expression. Moreover apoptosis was not evident from cell cycle kinetic analysis. Adv-HSVtk/GCV treated cells showed time dependent accumulation of cells in the S-phase of the cell cycle although there was no increase in the "apoptotic peak" or sub-G1 population. Swelling of the cytoplasm without apparent nuclear condensation suggested a possible involvement of necrosis. CONCLUSION The apoptotic mechanism may not play a central role in the Adv-HSVtk/GCV induced NT8e cell death and other mechanisms should be considered.
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Date AA, Srivastava D, Nagarsenker MS, Mulherkar R, Panicker L, Aswal V, Hassan PA, Steiniger F, Thamm J, Fahr A. Lecithin-based novel cationic nanocarriers (LeciPlex) I: fabrication, characterization and evaluation. Nanomedicine (Lond) 2011; 6:1309-25. [DOI: 10.2217/nnm.11.38] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aims: In the present investigation, the feasibility of fabricating novel self-assembled cationic nanocarriers (LeciPlex) containing cetyltrimethylammonium bromide (CTAB) or didodecyldimethylammonium bromide (DDAB) and soybean lecithin using pharmaceutically acceptable biocompatible solvents such as 2-Pyrrolidone (Soluphor P®) and diethyleneglycol monoethyl ether (Transcutol®) was established. Materials & Methods: The interaction between DDAB/CTAB and soybean lecithin in the nanocarriers was confirmed by differential scanning calorimetry and in vitro antimicrobial studies. The positive charge on the nanocarriers was confirmed by zeta potential analysis. Results: Transmission electron microscopy analysis could not reveal sufficient information regarding the internal structure of the nanocarriers, whereas cryotransmission electron microscopy studies indicated that these novel nanocarriers have unilamellar structure. Small-angle neutron scattering studies confirmed interaction of cationic surfactant (DDAB) and lecithin in the nanocarriers and confirmed the presence of unilamellar nanostructures. Conclusion: Various hydrophobic drugs could be encapsulated in the CTAB/DDAB-based lecithin nanocarriers (CTAB–LeciPlex or DDAB–LeciPlex) irrespective of their difference in log p-values. In vitro antimicrobial studies on triclosan-loaded LeciPlex confirmed entrapment of triclosan in the nanocarriers. The ability of CTAB–LeciPlex and DDAB–LeciPlex to condense plasmid DNA was established using agarose gel electrophoresis. DDAB–LeciPlex could successfully transfect pDNA in HEK-293 cells indicating potential in gene delivery. Original submitted: 20/8/2010; Revised submitted: 14/12/2010
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Affiliation(s)
- Abhijit A Date
- Department of Pharmaceutics, Bombay College of Pharmacy, Kalina, Santacruz (East), Mumbai-400098, India
| | - Deepika Srivastava
- Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai-410210, India
| | | | - Rita Mulherkar
- Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai-410210, India
| | - Lata Panicker
- Bhabha Atomic Research Center (BARC), Mumbai 400 085, India
| | - Vinod Aswal
- Bhabha Atomic Research Center (BARC), Mumbai 400 085, India
| | | | | | - Jana Thamm
- Friedrich-Schiller-University Jena, Germany
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AlRais F, Feldstein VA, Srivastava D, Gosnell K, Moon-Grady AJ. Monochorionic twins discordant for congenital heart disease: a referral center's experience and possible pathophysiologic mechanisms. Prenat Diagn 2011; 31:978-84. [DOI: 10.1002/pd.2819] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 06/01/2011] [Accepted: 06/01/2011] [Indexed: 11/10/2022]
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Brenner D, Robertson D, Carty R, Srivastava D, Garrison B. Combining Molecular Dynamics and Monte Carlo Simulations to Model Chemical Vapor Deposition: Application to Diamond. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-278-255] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractGas-surface reactions of the type that contribute to growth during the chemical vapor deposition (CVD) of diamond films are generally completed in picoseconds, well within timescales accessible by molecular dynamics (MD) simulations. For low-pressure deposition, however, the time between collisions for a surface site can be microseconds, which makes direct modeling of CVD crystal growth impossible using standard MD methods. To effectively bridge this discrepancy in timescales, the gas-surface reactions can be modeled using MD trajectories, and then this data can be used to define probabilities in a Monte Carlo algorithm where each step represents a gas-surface collision. We illustrate this approach using the reaction of atomic hydrogen with a diamond (111) surface as an example, where we use abstraction and sticking probabilities generated using classical trajectories in a simple Monte Carlo algorithm to determine the number of open sites as a function of temperature. We also include models for the thermal desorption of hydrogen that predict that growth temperatures are not restricted by the thermal loss of chemisorbed hydrogen.
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Ray D, Aswal VK, Srivastava D. Concentration effect on tuning of block copolymer-mediated synthesis of gold nanoparticles. J Nanosci Nanotechnol 2010; 10:6356-6362. [PMID: 21137730 DOI: 10.1166/jnn.2010.2627] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Synthesis of gold nanoparticles has been examined using triblock copolymer Pluronic P85 (EO26PO39EO26) at different concentrations as a function of hydrogen tetrachloroaureate (III) hydrate (HAuCl4 x 3H2O) in aqueous solution. The concentration of P85 block copolymer was varied from 0.5 to 2 wt% at fixed temperature (30 degrees C) in presence of HAuCl4 x 3H2O in the range of 0.002 to 0.2 wt% for each P85 concentration. The surface plasmon resonance in the time-dependent UV-visible spectra reveals that increase in the block copolymer concentration increases the yield of the gold nanoparticles but decreases their stability. Both small-angle neutron scattering (SANS) and dynamic light scattering (DLS) show that the number density of block copolymer micelles increase almost linearly with the concentration, which is related to result in higher numbers of nucleation centers and therefore increase in the yield of gold nanoparticles. The fact that increase in the number density of nanoparticles also increases the chances of aggregation and this tends to decrease the stability at higher block copolymer concentration. Transmission electron microscopy (TEM) images confirm the larger sizes of the nanoparticles formed in these systems at higher concentrations.
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Affiliation(s)
- Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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Mohamed SA, Nigam V, Jensen B, Sier H, Simpson P, Srivastava D, Sievers HH. Micrornas in bicuspid aortic valve: a comparison between stenosis and insufficiency aortic valve. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246793] [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: 10/19/2022]
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Armstrong GT, Pan Z, Ness K, Srivastava D, Robison LL. Temporal trends in cause-specific late mortality among five-year survivors of childhood cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.10004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10004 Background: Five-year survival rates for childhood cancer have increased over the past 4 decades, increasing the number of long-term survivors. Among 5-yr survivors, the impact of changes in therapy on cause-specific late mortality has not been thoroughly assessed. Methods: Late mortality was evaluated over 3 eras (1974–81, 1982–90, 1991–2000) in 26,643 5-year survivors diagnosed <21 years of age from the SEER population-based registry. Cause-specific mortality was categorized as death from recurrence/progression of primary disease, external causes, and non-recurrence/non-external causes (Non-Recur/Ext) (i.e., deaths from health conditions including sequelae of cancer therapy). Results: All-cause and Recurrence mortality was significantly lower in more recent eras ( Table ). No significant improvement in late mortality attributable to Non-Recur/Ext causes was seen. Additionally, all-cause mortality was significantly lower in more recent eras for 5-year survivors of ALL, AML, Hodgkin, NHL, and CNS tumors, but not neuroblastoma and Ewing's Sarcoma where an increase in cumulative incidence of late mortality was seen in more recent eras. Significant improvement in late mortality from Recurrence by era was seen in most diagnostic groups. Conclusions: All-cause late mortality has improved with more recent eras, attributable to reduced rates of mortality from progression of primary disease (i.e., durable remission). Importantly, however, efforts to reduce the toxicity of more recent therapies have not produced detectable reduction in mortality attributable to other health conditions including sequelae of cancer therapy (non-Recur/Ext causes of death), which would include death from second malignancy, cardiac and pulmonary conditions. Worsening late mortality for 5-year survivors of neuroblastoma and Ewing's sarcoma may be due to improved use of salvage therapies that delay, but do not ultimately prevent death. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
| | - Z. Pan
- St. Jude Children's Research Hospital, Memphis, TN
| | - K. Ness
- St. Jude Children's Research Hospital, Memphis, TN
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Srivastava D, Srivastava B, Tripathi T. Surgical correction of mandibular malformations by distraction osteogenesis. Int J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.ijom.2007.08.159] [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: 10/22/2022]
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SH C, Thulkar S, Srivastava D, Kumar L, Hariprasad R, Kumar S, Sharma M. Preoperative evaluation of epithelial ovarian cancer with multidetector computed tomography and its correlation with surgical outcome. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.16051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
16051 Background: In the management of epithelial ovarian cancer (EOC), optimum debulking surgery (residual tumour of 1 cm or less) is the most important prognostic factor and is associated with higher survival We conducted a prospective study to evaluate the role of Multidetector (MD) CT scan to predict optimal debulking in advanced EOC. Methods: Between December, 2004 and October, 2006, 38 previously untreated patients (median age-50 years, range 26 to 70) were evaluated with contrast- enhanced MD CT scan of abdomen and pelvis. All CT scans were performed on four-slice MD CT scanner with thin slice image acquisition. Multiplanar coronal, sagital or oblique images were constructed and all images were reviewed by at least 2 radiologists. The extent of disease was determined and mapped for all areas of abdomen and pelvis. Patients underwent primary debulking surgery in which total abdominal hysterectomy, bilateral salphingo-oophorectomy, omentectomy and optimal cytoreduction was done. CT scan films were reviewed and compared with surgical findings. A CT scan scoring system was developed to predict the optimum debulking using 10 parameters: ascites, pelvic, peritoneal deposits, large bowel, small bowel, omentum, diaphragm, liver, lymphadenopathy and lesser sac. Each factor was assigned a score of 0 to 2. The statistical analysis was done using SPSS version 11 and EpiInfo 6 software. Results: The mean interval between CT scan and surgery was 11 days. 18 of 38 patients had a CT score = 7; all 18 had sub-optimal debulking. Of remaining 20 patients with CT score <7, 17(44.7%) had optimum and 3 had sub-optimal cytoreduction. The sensitivity and specificity was 85.7% (95% CI 62.6–96.2) and 100% (95% CI 77.1–100), respectively. It had positive predictive value of 100% and negative predictive value of 85% with accuracy of 92% in identification of patients who would not benefit from surgery. Presence of tumor at gall bladder fossa, porta hepatis, ligament teres, spleen , stomach, pancreas, lesser sack and pelvic side walls was associated with sub-optimal debulking. Conclusions: Pre-operative CT scan scoring helps to identify patients who are likely to have sub-optimal debulking and may be candidates for neoadjuvant chemotherapy No significant financial relationships to disclose.
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Affiliation(s)
- C. SH
- All India Institute of Medical Sciences, New Delhi, India
| | - S. Thulkar
- All India Institute of Medical Sciences, New Delhi, India
| | - D. Srivastava
- All India Institute of Medical Sciences, New Delhi, India
| | - L. Kumar
- All India Institute of Medical Sciences, New Delhi, India
| | - R. Hariprasad
- All India Institute of Medical Sciences, New Delhi, India
| | - S. Kumar
- All India Institute of Medical Sciences, New Delhi, India
| | - M. Sharma
- All India Institute of Medical Sciences, New Delhi, India
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Talapatra S, Kim T, Wei BQ, Kar S, Vajtai R, Sastry GVS, Shima M, Srivastava D, Ajayan PM. Room Temperature Ferromagnetism in Graphitic Nanoclusters. ACTA ACUST UNITED AC 2006. [DOI: 10.1556/nano.1.2006.3.3] [Citation(s) in RCA: 3] [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: 11/19/2022]
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Jayade CV, Ayoub AF, Khambay BS, Walker FS, Gopalakrishnan K, Malik NA, Srivastava D, Pradhan R. Skeletal stability after correction of maxillary hypoplasia by the Glasgow extra-oral distraction (GED) device. Br J Oral Maxillofac Surg 2006; 44:301-7. [PMID: 16162377 DOI: 10.1016/j.bjoms.2005.07.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2004] [Accepted: 07/05/2005] [Indexed: 11/19/2022]
Abstract
Maxillary distraction osteogenesis delivers excellent results, particularly in patients with clefts. In the past, devices such as the conventional facemask and the rigid external distraction device have been used to correct maxillary hypoplasia after a Le Fort I osteotomy. We describe a new device, the Glasgow extra-oral distraction device. The extent of skeletal and dental stability of corrections achieved in 10 patients with maxillary hypoplasia associated with clefts was satisfactory. This device costs little, can be produced in developing countries, and provides effective treatment for severe secondary deformity associated with clefts.
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Affiliation(s)
- C V Jayade
- Department of Orthodontics, SDM Dental College, Dharwad, Karnataka State, India
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Talapatra S, Ganesan PG, Kim T, Vajtai R, Huang M, Shima M, Ramanath G, Srivastava D, Deevi SC, Ajayan PM. Irradiation-induced magnetism in carbon nanostructures. Phys Rev Lett 2005; 95:097201. [PMID: 16197243 DOI: 10.1103/physrevlett.95.097201] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2005] [Indexed: 05/04/2023]
Abstract
Nitrogen (15N) and carbon (12C) ion implantations with implant energy of 100 keV for different doses were performed on nanosized diamond (ND) particles. Magnetic measurements on the doped ND show ferromagnetic hysteresis behavior at room temperature. The saturation magnetization (M(s)) in the case of 15N implanted samples was found to be higher compared to the 12C implanted samples for dose sizes greater than 10(14) cm(-2). The role of structural modification or defects along with the carbon-nitrogen (C-N) bonding states for the observed enhanced ferromagnetic ordering in 15N doped samples is explained on the basis of x-ray photoelectron spectroscopy measurements.
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Affiliation(s)
- S Talapatra
- Department of MS & E, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
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Kwon YW, Manthena C, Oh JJ, Srivastava D. Vibrational characteristics of carbon nanotubes as nanomechanical resonators. J Nanosci Nanotechnol 2005; 5:703-12. [PMID: 16010925 DOI: 10.1166/jnn.2005.110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Using eigenvalue analysis of mass and stiffness matrices directly computed from atomistic simulations, natural frequencies and mode shapes of various carbon nanotubes are studied. The stiffness matrix was developed from the Tersoff-Brenner potential for carbon-carbon interactions. The computed frequencies of the radial breathing modes of a variety of armchair (n, n) nanotubes agree well with results obtained by others using different techniques. In addition, the study reveals diverse mode shapes such as accordion-like axial modes, lateral bending modes, torsional modes, axial shear modes, and radial breathing modes for a variety of single-wall, multi-wall, and bamboo-type carbon nanotubes. The effects of different constraints on the carbon nanotube ends on the computed frequencies and mode shapes have been investigated for possible applications in vibration sensors or electromechanical resonators.
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Affiliation(s)
- Y W Kwon
- Department of Mechanical Engineering and Energy Processes, Southern Illinois University, Carbondale, Illinois 62901, USA
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Razdan A, Srivastava D. Indigenous dental implants in vascularised fibular grafts—Two cases. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81395-5] [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: 10/24/2022]
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Srivastava D, Srivastava B, Tripathi T, Razdan A. Surgical correction of open bite deformities. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81235-4] [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: 11/16/2022]
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Johnson J, Wang ZX, Srivastava D. Corrections - Mechanistic Investigation of Medium-Chain Fatty Acyl-CoA Dehydrogenase Utilizing 3-Indolepropionyl/Acryloyl-CoA as Chromophoric Substrate Analogues. Biochemistry 2003. [DOI: 10.1021/bi00088a600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
We have established the beginnings of a road map to understand how ventricular cells become specified, differentiate, and expand into a functional cardiac chamber (Fig. 5). The transcriptional networks described here provide clear evidence that disruption of pathways affecting ventricular growth could be the underlying etiology in a subset of children born with malformation of the right or left ventricle. As we learn details of the precise mechanisms through which the critical factors function, the challenge will lie in devising innovative methods to augment or modify the effects of gene mutations on ventricular development. Because most congenital heart disease likely occurs in a setting of heterozygous, predisposing mutations of one or more genes, modulation of activity of critical pathways in a preventive fashion may be useful in averting disease in genetically susceptible individuals.
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Affiliation(s)
- D Srivastava
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9148, USA
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