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Devi P, Dwivedi R, Sankar R, Jain A, Gupta S, Gupta S. Unraveling the Genetic Web: H-Ras Expression and Mutation in Oral Squamous Cell Carcinoma-A Systematic Review. Head Neck Pathol 2024; 18:21. [PMID: 38502412 PMCID: PMC10951159 DOI: 10.1007/s12105-024-01623-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 01/27/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) is a commonly occurring malignancy with complex genetic alterations contributing to its development. The H-Ras, a proto-oncogene, becomes an oncogene when mutated and has been implicated in various cancers. This systematic review aims to research to what extent H-Ras expression and mutation contribute to the development and progression of OSCC, and how does this molecular alteration impacts the clinical characteristics and prognosis in patients with OSCC. METHODS A thorough electronic scientific literature search was carried out in PUBMED, SCOPUS, and GOOGLE SCHOLAR databases from 2007 to 2021. The search strategy yielded 120 articles. Following aggregation and filtering all results through our inclusion and exclusion criteria total 9 articles were included in our literature review. It has also been registered with PROSPERO (CRD42023485202). RESULTS It was found that mutations in the Ras gene commonly reported in hotspots at codons 12, 13, and 61 resulting in the activation of downstream signaling pathways causing abnormal and uncontrolled cell growth. This systematic review has shown an increased prevalence of H-Ras mutation in well-differentiated OSCC and also the prevalence of H-Ras mutation in individuals engaging in multiple risk behaviors, particularly chewing tobacco, demonstrated a significant association with a higher prevalence of H-Ras positivity. CONCLUSION This review sheds light on the prevalence of H-Ras mutations, their association with clinical characteristics, and their potential implications for OSCC prognosis. It also enhances our comprehension of the molecular mechanisms that underlie OSCC and paves the way for further research into targeted treatments based on H-Ras alterations.
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Affiliation(s)
- Priya Devi
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ruby Dwivedi
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Roshna Sankar
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ayushi Jain
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Sameer Gupta
- Department of Surgical Oncology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Shalini Gupta
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh, India.
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Patel S, Ghebre R, Dwivedi R, Macheledt K, Watson S, Duffy B, Rogers E, Pusalavidyasagar S, Guo C, Misono S, Evans M, Lingras K, Kunin-Batson A, McCarty C, Sandoval-Garcia C, Nakib N, Johnson C, Barker S, Hutto S, Church A, Vezys V, Girard A, Spencer S, Berge J. Academic clinician frontline-worker wellbeing and resilience during the COVID-19 pandemic experience: Were there gender differences? Prev Med Rep 2023; 36:102517. [PMID: 38116283 PMCID: PMC10728464 DOI: 10.1016/j.pmedr.2023.102517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 11/16/2023] [Accepted: 11/18/2023] [Indexed: 12/21/2023] Open
Abstract
Prior research suggests COVID-19 has amplified stress on Academic Clinician Frontline-Workers (ACFW). The aim of this paper is: (1) to better understand the experiences of ACFW during the COVID-19 pandemic including their mental-emotional wellbeing, academic productivity, clinical experiences, and (2) to examine any gender differences. A cross-sectional survey was administered to University of Minnesota/M Health Fairview systems' faculty February-June 2021. Of the 291 respondents, 156 were clinicians, with 91 (58 %) identifying as Frontline-Workers (ACFW). Faculty wellbeing was assessed using validated measures in addition to measures of productivity and sociodemographics. For example, ACFW reported a higher Work-Family Conflict (WFC) scores compared to non-ACFW (26.5 vs. 24.1, p = 0.057) but did not report higher Family-Work Conflict (FWC) scores (17.7 vs. 16.3, p = 0.302). Gender sub-analyses, revealed that women ACFW compared to men ACFW reported higher WFC scores (27.7 vs. 24.1, p = 0.021) and FWC (19.3 vs. 14.3, p = 0.004). Academically, ACFW reported submitting fewer grants and anticipated delays in promotion and tenure due to the COVID-19 (p = 0.035). Results suggest COVID-19 has exacerbated ACFW stress and gender inequities. Reports of anticipated delay in promotion for ACFW may pose a challenge for the long-term academic success of ACFW, especially women ACFW. In addition, women may experience higher FWC and WFC as compared to men. Schools of academic medicine should consider re-evaluating promotion/tenure processes and creating resources to support women ACFW as well as ACFW caregivers.
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Affiliation(s)
- S.I. Patel
- Department of Neurology, lead of Salary, Resource, and Leadership Equity Action Group of the Center for Women in Medicine and Science, and member of the DEI Council at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - R. Ghebre
- Department of Obstetrics and Gynecology, Associate Director for Diversity, Equity and Inclusion at Masonic Cancer Center and a member of the Retention and Recruitment Action Group in the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - R. Dwivedi
- Department of Family Medicine and Community Health and member of the Center for Women in Medicine and Science Mentoring Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - K. Macheledt
- Center for Women’s Health Research at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - S. Watson
- Center for Women in Medicine and Science and Program Coordinator for the Center for Global Health and Social Responsibility at the University of Minnesota, Minneapolis, MN, USA
| | - B.L. Duffy
- Department of Medicine and a member of the Retention and Recruitment Action Group in the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - E.A. Rogers
- Departments of Medicine and of Pediatrics, and member of the Salary, Resource, and Leadership Equity Action Group in the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - S. Pusalavidyasagar
- Department of Medicine and member of the Center for Women in Medicine and Science Mentoring Action Group at the University of Minnesota Medical School, Minneapolis, MN USA
| | - C. Guo
- Department of Radiology and member of the Center for Women in Medicine and Science Strategic Communications and Collaborations Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - S. Misono
- Department of Otolaryngology and member of the Center for Women in Medicine and Science Mentoring Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - M.D. Evans
- Biostatistical Design and Analysis Center, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, MN, USA
| | - K. Lingras
- Department of Psychiatry and Behavioral Sciences and a member of the Retention and Recruitment Action Group in the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - A. Kunin-Batson
- Department of Pediatrics and member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - C.A. McCarty
- Department of Family Medicine and Biobehavioral Health and Associate Dean for Research at the Duluth campus of the University of Minnesota, USA
| | - C. Sandoval-Garcia
- Departments of Neurosurgery and Pediatrics and member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - N. Nakib
- Female Urology and Urodynamics in the Department of Urology, and the Strategic Communications and Collaborations Action Group Lead for the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - C. Johnson
- University of Minnesota and an MPH student at the Harvard TH Chan School of Public Health, USA
| | - S. Barker
- Department of Radiology and a member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - S. Hutto
- Department of Obstetrics, Gynecology and Women’s Health and a member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - A.L. Church
- Department of Radiology and the Mentoring Action Group Lead for the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - V. Vezys
- Department of Microbiology and Immunology, a member of the Center for Immunology and a member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - A. Girard
- Department of Family Medicine and Community Health and member of the Center for Women in Medicine and Science Salary, Resource, and Leadership Equity Action Group at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - S. Spencer
- Department of Pharmacology and the Retention and Recruitment Action Group Lead for the Center for Women in Medicine and Science at the University of Minnesota Medical School, Minneapolis, MN, USA
| | - J.M. Berge
- Department of Family Medicine and Community Health, Director of the Center for Women in Medicine and Science, and Director of the Women’s Health Research Program/Building Interdisciplinary Research Careers in Women’s Health (BIRCWH) Program at the University of Minnesota Medical School, Minneapolis, MN, USA
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Dwivedi R, Pandey R, Chandra S, Mehrotra D. Dendritic cell-based immunotherapy: a potential player in oral cancer therapeutics. Immunotherapy 2023; 15:457-469. [PMID: 37013843 DOI: 10.2217/imt-2022-0238] [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] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Background & aim: Dendritic cell (DC)-based immunotherapy modulates a patient's immune system for recognition and subsequent removal of tumor cells. DC-mediated anticancer therapy has been considered in several studies/ongoing trials for multiple types of cancer. Our aim is to describe the potential and current status of DC-based immunotherapy in oral cancer therapeutics. Materials & methods: An internet-based literature search with relevant search terms from 2012 to 2022 post-screening resulted in 58 articles that were considered for systematic review. Results & conclusion: Evaluation of DC based immunotherapy exploiting the critical immune cells in well-equipped laboratories with adequately trained and skilled experts along with a synergistic approach that is affordable and approachable to the patients can prove as an efficient anticancer therapy.
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Affiliation(s)
- Ruby Dwivedi
- Department of Oral & Maxillofacial Pathology and Microbiology, King George's Medical University, Lucknow, 226003, Uttar Pradesh, India
| | - Rahul Pandey
- Department of Health Research-Multi-Disciplinary Research Unit, King George's Medical University, Lucknow, 226003, Uttar Pradesh, India
| | - Shaleen Chandra
- Department of Oral & Maxillofacial Pathology and Microbiology, King George's Medical University, Lucknow, 226003, Uttar Pradesh, India
| | - Divya Mehrotra
- Department of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, 226003, Uttar Pradesh, India
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Dwivedi R, Drumm BT, Griffin CS, Dudem S, Bradley E, Alkawadri T, Martin SL, Sergeant GP, Hollywood MA, Thornbury KD. Excitatory cholinergic responses in mouse primary bronchial smooth muscle require both Ca 2+ entry via l-type Ca 2+ channels and store operated Ca 2+ entry via Orai channels. Cell Calcium 2023; 112:102721. [PMID: 37023533 DOI: 10.1016/j.ceca.2023.102721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 03/10/2023] [Accepted: 03/23/2023] [Indexed: 04/08/2023]
Abstract
Malfunctions in airway smooth muscle Ca2+-signalling leads to airway hyperresponsiveness in asthma and chronic obstructive pulmonary disease. Ca2+-release from intracellular stores is important in mediating agonist-induced contractions, but the role of influx via l-type Ca2+ channels is controversial. We re-examined roles of the sarcoplasmic reticulum Ca2+ store, refilling of this store via store-operated Ca2+ entry (SOCE) and l-type Ca2+ channel pathways on carbachol (CCh, 0.1-10 µM)-induced contractions of mouse bronchial rings and intracellular Ca2+ signals of mouse bronchial myocytes. In tension experiments, the ryanodine receptor (RyR) blocker dantrolene (100 µM) reduced CCh-responses at all concentrations, with greater effects on sustained rather than initial components of contraction. 2-Aminoethoxydiphenyl borate (2-APB, 100 μM), in the presence of dantrolene, abolished CCh-responses, suggesting the sarcoplasmic reticulum Ca2+ store is essential for contraction. The SOCE blocker GSK-7975A (10 µM) reduced CCh-contractions, with greater effects at higher (e.g. 3 and 10 µM) CCh concentrations. Nifedipine (1 µM), abolished remaining contractions in GSK-7975A (10 µM). A similar pattern was observed on intracellular Ca2+-responses to 0.3 µM CCh, where GSK-7975A (10 µM) substantially reduced Ca2+ transients induced by CCh, and nifedipine (1 µM) abolished remaining responses. When nifedipine (1 µM) was applied alone it had less effect, reducing tension responses at all CCh concentrations by 25% - 50%, with greater effects at lower (e.g. 0.1 and 0.3 µM) CCh concentrations. When nifedipine (1 µM) was examined on the intracellular Ca2+-response to 0.3 µM CCh, it only modestly reduced Ca2+ signals, while GSK-7975A (10 µM) abolished remaining responses. In conclusion, Ca2+-influx from both SOCE and l-type Ca2+ channels contribute to excitatory cholinergic responses in mouse bronchi. The contribution of l-type Ca2+ channels was especially pronounced at lower doses of CCh, or when SOCE was blocked. This suggests l-type Ca2+ channels might be a potential target for bronchoconstriction under certain circumstances.
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Affiliation(s)
- R Dwivedi
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - B T Drumm
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - C S Griffin
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - S Dudem
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - E Bradley
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - T Alkawadri
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - S L Martin
- School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - G P Sergeant
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - M A Hollywood
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland
| | - K D Thornbury
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, A91 K584, Ireland.
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Dwivedi R, Yadav PK, Pandey R, Mehrotra D. Auricular reconstruction via 3D bioprinting strategies: An update. J Oral Biol Craniofac Res 2022; 12:580-588. [PMID: 35968037 DOI: 10.1016/j.jobcr.2022.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/22/2022] [Accepted: 07/28/2022] [Indexed: 10/16/2022] Open
Abstract
Image 1.
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Affiliation(s)
- Ruby Dwivedi
- King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Pradeep Kumar Yadav
- Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Rahul Pandey
- King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Divya Mehrotra
- Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow, Uttar Pradesh, India
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Eastwood A, Deng J, Dwivedi R. 987 TACKLING OVERPRESCRIBING; WHAT ABOUT THE HABITUAL OFFENDER, PPI? Age Ageing 2022. [DOI: 10.1093/ageing/afac126.040] [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: 11/15/2022] Open
Abstract
Abstract
Introduction
Overprescribing is a serious problem in health systems internationally and can lead to preventable hospital assessments and admissions, even premature deaths1. Proton pump inhibitors (PPIs) are commonly prescribed in older people. They are associated with risk of C difficile infection, hypomagnesemia, osteoporosis, hypergastrinaemia, and are considered falls risk increasing drugs (FRID). Unfortunately, there isn’t a guideline which unifies the various indications of PPIs.
Method
303 discharges were screened from 2 acute geriatric wards between 01/10/2020 and 31/12/2020. After exclusions (34 deaths, 5 readmissions), 264 notes were reviewed. Those with a PPI mentioned on their discharge summaries were audited against both NICE dyspepsia guidelines and our hospital trust guidelines (PPI usage in those on co-medications), assessing whether long term use was advocated. Additional information was obtained from our hospital systems including digital health records.
Results
153/264(58%) patients had PPIs listed on their discharge summaries. Of those using PPIs, 146 (95%) had polypharmacy and 140(92%) had a CFS ≥5. More PPIs were commenced (18) than discontinued (16). Against NICE dyspepsia guidelines, 46/153(30%) patients did not require long term PPI treatment. 81/153 (53%) patients had a PPI prescribed due to anticoagulation, however, 37/81 (46%) did not fulfil our trust criteria for co-prescription.
Conclusion
PPI usage is prevalent in older people and often continued without a valid indication which could result in preventable harm in an already vulnerable cohort. There is a need to actively deprescribe PPIs within all healthcare settings. Our findings have been widely shared with our departmental colleagues and other relevant specialties and a guideline on long term use of PPIs in older people (>65) has been developed. Going forward, we plan to re-audit against this new guideline in 6 months to assess improvement.
References 1. Good for you, good for us, good for everybody. Published 22/9/21.
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Affiliation(s)
- A Eastwood
- Nottingham University Hospitals NHS Trust , Nottingham
| | - J Deng
- Nottingham University Hospitals NHS Trust , Nottingham
| | - R Dwivedi
- Nottingham University Hospitals NHS Trust , Nottingham
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Lee-Johnson L, Dwivedi R. 1048 REDUCING RISK FROM WARFARIN- A COMPLETED AUDIT CYCLE ON NICE COMPLIANCE WITH WARFARIN FOR NVAF IN HOSPITALISED OLDER PEOPLE. Age Ageing 2022. [DOI: 10.1093/ageing/afac126.065] [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: 11/13/2022] Open
Abstract
Abstract
Introduction
Traditionally Warfarin has been mainly used for stroke thromboprophylaxis in patients with atrial fibrillation but direct oral anticoagulant (DOAC) are increasingly being used as they have improved safety profiles with comparable efficacy. Recent data from National Reporting and Learning System (NRLS) have discovered safety incidents related to anticoagulation, predominantly Warfarin, contributing in excess of 10% of all medication errors. National institute for clinical excellence (NICE) recommends reassessing anticoagulation choice for patients on Warfarin with poor anticoagulation control, indicated by any of the following: 1 > 2 INR values <1.5 or > 5 or 1 INR value >8, within the past 6 months 2 > Time in therapeutic range (TTR) <65% Intervention An initial retrospective audit on 50 patients on Warfarin for NVAF performed between June—September 18 showed poor compliance with NICE. We reviewed the previous 6 months INR values and recorded any significant deviations outside of the therapeutic range as per NICE. TTR over the last 6 months was calculated using the Rosendaal method. Following departmental audit presentation, a reaudit was carried out between Jan-Aug 2019 to assess improvement.
Results
Median age was 87.5 compared to 83 in the first audit. Warfarin was correctly continued in 7/38(18%) in the 1st audit which improved to 9/28 (32%) in the second. Number of patients discharged on warfarin with unstable INRs decreased significantly from 26/32 (81%) patients in the 1st audit to 10/24 (42%) in the 2nd.
Discussion
Our reaudit shows significant reduction in continuation of warfarin on discharge in patients with unstable INRs (p = 0.0043 Fisher exact test). Although, there is a trend towards improvement with NICE compliance; in general, the compliance with NICE remains poor. We suggest geriatricians to proactively review the appropriateness of warfarin prescription and to consider a DOAC in preference to Warfarin in all elderly patients.
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Affiliation(s)
- L Lee-Johnson
- Department of Pharmacy, Queens Medical Centre , Nottingham
| | - R Dwivedi
- Department of Healthcare for older people, Queens Medical Centre , Nottingham
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Dwivedi R, Mehrotra D, Chandra S, Pandey R. A Systematic Review of Potential Immunotherapies Targeting PRAME in Retinoid Resistant Oral Potentially Malignant Disorders and Oral Cancer. Curr Mol Med 2021; 22:735-746. [PMID: 34711164 DOI: 10.2174/1566524021666211027091719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 07/06/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
Backgound and Objective: Early chemoprevention in Oral Potentially Malignant Disorders (OPMDs) and Oral Cancer (OC) has been extensively researched in order to mitigate the malignant transformation and progression of the lesion. Many agents have been attempted, but their cost inefficacy and inadequate outcomes posed a major hindrance in their successful adoption. Retinoid Based Therapy (RBT) though a cheap and effective treatment option, could not achieve much clinical usage because of variable responsiveness in clinical outcomes. Such clinical response variability may be attributed to the repression of retinoid receptors by Preferentially Expressed Antigen of Melanoma (PRAME) protein molecule. Therefore, in order to make RBT successful, targeting PRAME by various immunotherapies is an exciting area of research investigation. This review provides an insight into the various immunotherapeutic strategies targeting PRAME and their usefulness in retinoid-resistant OPMD and OC. Method of data collection: An exhaustive internet-based literature search following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines was carried out in PUBMED and Google SCHOLAR database using terms 'Anti-PRAME' OR 'PRAME Immunotherapy' OR 'PRAME Vaccines' AND 'Cancer' AND 'Retinoid resistance'. Only articles in the English language with at least 1 citation, published in a journal with impact factor ≥ 1, having relevance to the context and availability of full text were considered. Results: After an initial search, 342 articles were yielded on the basis of inclusion criteria and, by reading the abstract and availability of full text, a total of 124 articles were selected. Further reading the full texts and considering articles from the references of the selected articles, a total of 65 articles were finally included in the review. Conclusion: Our analysis of the literature suggests that PRAME screening in OC and OPMDs prior to RBT should be done. In PRAME positive cases, approaches like PRAME based immunotherapy in the form of Cancer vaccine therapy [Acellular PRAME vaccine, PRAME pulsed Dendritic Cells (DC)]; Adoptive T Cell therapy/T Cell Receptor-T Cell therapy, Antibody therapy/Chimeric Antigen Receptor-T Cell therapy along with Presented antigen modulation Therapies employing histone deacetylase inhibitors and demethylation agents seem plausible. In the future, a combination therapy employing either PRAME vaccines or antibodies or Adoptive T cell Therapy and ATRA could be used in retinoid resistant OC and OPMDs.
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Affiliation(s)
- Ruby Dwivedi
- Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow, Uttar Pradesh. India
| | - Divya Mehrotra
- Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow, Uttar Pradesh. India
| | - Shaleen Chandra
- Department of Oral Pathology and Microbiology, King George's Medical University, Lucknow, Uttar Pradesh. India
| | - Rahul Pandey
- King George's Medical University, Lucknow, Uttar Pradesh. India
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Dwivedi R, Mehrotra D. 3D bioprinting and craniofacial regeneration. J Oral Biol Craniofac Res 2020; 10:650-659. [PMID: 32983859 PMCID: PMC7493084 DOI: 10.1016/j.jobcr.2020.08.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 06/18/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Considering the structural and functional complexity of the craniofacial tissues, 3D bioprinting can be a valuable tool to design and create functional 3D tissues or organs in situ for in vivo applications. This review aims to explore the various aspects of this emerging 3D bioprinting technology and its application in the craniofacial bone or cartilage regeneration. METHOD Electronic database searches were undertaken on pubmed, google scholar, medline, embase, and science direct for english language literature, published for 3D bioprinting in craniofacial regeneration. The search items used were 'craniofacial regeneration' OR 'jaw regeneration' OR 'maxillofacial regeneration' AND '3D bioprinting' OR 'three dimensional bioprinting' OR 'Additive manufacturing' OR 'rapid prototyping' OR 'patient specific bioprinting'. Reviews and duplicates were excluded. RESULTS Search with above described criteria yielded 476 articles, which reduced to 108 after excluding reviews. Further screening of individual articles led to 77 articles to which 9 additional articles were included from references, and 18 duplicate articles were excluded. Finally we were left with 68 articles to be included in the review. CONCLUSION Craniofacial tissue and organ regeneration has been reported a success using bioink with different biomaterial and incorporated stem cells in 3D bioprinters. Though several attempts have been made to fabricate craniofacial bone and cartilage, the strive to achieve desired outcome still continues.
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Affiliation(s)
- Ruby Dwivedi
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Divya Mehrotra
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
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Mehrotra D, Dwivedi R, Nandana D, Singh RK. From injectable to 3D printed hydrogels in maxillofacial tissue engineering: A review. J Oral Biol Craniofac Res 2020; 10:680-689. [PMID: 33072505 DOI: 10.1016/j.jobcr.2020.09.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/25/2020] [Accepted: 09/12/2020] [Indexed: 02/06/2023] Open
Abstract
Introduction This review aims at describing different types of hydrogels in context to their composition, fabrication techniques and other specific features along with an insight into the latest advancements including smart hydrogels, 3D printed, programmable, shape memory and self-healing hydrogels for their applicability as scaffold in maxillofacial bone and cartilage tissue regeneration. Methods Electronic database searches were undertaken on PubMed, Ovid, Medline, Embase, ProQuest and science direct for English language literature, published for application of hydrogels in maxillofacial bone and cartilage tissue engineering. The search items used in this article were hydrogel, bone and cartilage tissue engineering, maxillofacial, clinical trials. Reviews and in vitro studies were excluded. Results Search for injectable hydrogel showed 4955 articles, when restricted to bone tissue engineering results were reduced to 463 and for cartilage engineering to 335; when we limited it to maxillofacial bone and cartilage tissue engineering, search results showed 49 articles to which 9 additional articles were included from references, after exclusion of in-vitro studies and duplicates 16 articles were obtained for our study. Similarly, for 3D printed hydrogels, result showed 1126 articles, which got restricted to 19 when searched for maxillofacial bone and cartilage engineering, then 2 additional articles were included directly from references, and finally after exclusion of the invitro studies and duplicates, a total of 5 articles were obtained. Conclusion Modifications in hydrogel can improve the mechanical properties, biocompatibility and unique chemistries for its use in bone and cartilage tissue engineering for future research.
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Affiliation(s)
- Divya Mehrotra
- Professor, Dept of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, India
| | - Ruby Dwivedi
- Research Student, Dept of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, India
| | - Deepti Nandana
- Research Student, Dept of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, India
| | - R K Singh
- Professor, Dept of Oral & Maxillofacial Surgery, King George's Medical University, Lucknow, India
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Dwivedi R, Chandra S, Mehrotra D, Raj V, Pandey R. Predicting transition from oral pre-malignancy to malignancy via Bcl-2 immuno-expression: Evidence and lacunae. J Oral Biol Craniofac Res 2020; 10:397-403. [PMID: 32775181 DOI: 10.1016/j.jobcr.2020.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 06/27/2020] [Accepted: 07/03/2020] [Indexed: 12/31/2022] Open
Abstract
Bcl-2 (B cell Lymphoma -2) family comprises of both anti-apoptotic and pro-apoptotic proteins whose altered expression or change in ratio inhibits apoptosis, and promotes tumor progression. The aim of this study is to assess the usefulness of Bcl-2 in distinguishing dysplastic or malignant epithelium from non-dysplastic or normal epithelium to aid in prediction of malignant transformation potential. Material and method Study group comprised of 30 cases of clinically diagnosed leukoplakia (OPMD), 15 cases of Oral Squamous Cell Carcinoma (OSCC) and 5 normal tissue samples. The labeling index of Bcl-2 was analyzed in immunohistochemically stained sections. Different statistical tools were used to analyze the data and to compare Bcl-2 expression qualitatively and quantitatively among all the groups. Results An increasing trend of Bcl-2 immunoexpression was observed from normal epithelium to non-dysplastic and from non-dysplastic to dysplastic lesions. In OSCC, the peripheral cells in the differentiating epithelial islands (within the connective tissue) showed Bcl-2 immuno-reactivity, which gradually decreased towards the center. In contrast, intense and diffuse Bcl-2 immuno-reactivity was seen in poorly differentiated carcinoma. But the overall Bcl-2 positivity was less in OSCC as compared to dysplastic lesions. Conclusion Increased expression of Bcl-2 oncoprotein in sequentially progressing epithelial dysplasia and down-regulation in differentiating carcinoma (well and moderately differentiating OSCC) unveils the clinical relevance of Bcl-2 in early stages of OSCC tumorigenesis. The heterogenous expression of Bcl-2 in carcinoma with different grades of differentiation renders them unable to be used as an independent tool for predicting transition from oral pre-malignancy to malignancy.
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Affiliation(s)
- Ruby Dwivedi
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, UP, India
| | - Shaleen Chandra
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, King George's Medical University, Lucknow, UP, India
| | - Divya Mehrotra
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, UP, India
| | - Vineet Raj
- Department of Oral Pathology and Microbiology, Chandra Dental College and Hospital, Lucknow, UP, India
| | - Rahul Pandey
- DHR-MRU, Faculty of Dental Sciences, King George's Medical University, Lucknow, UP, India
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Dwivedi R, Pandey R, Chandra S, Mehrotra D. Apoptosis and genes involved in oral cancer - a comprehensive review. Oncol Rev 2020; 14:472. [PMID: 32685111 PMCID: PMC7365992 DOI: 10.4081/oncol.2020.472] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 03/20/2020] [Indexed: 12/24/2022] Open
Abstract
Oral cancers needs relentless research due to high mortality and morbidity associated with it. Despite of the comparable ease in accessibility to these sites, more than 2/3rd cases are diagnosed in advanced stages. Molecular/genetic studies augment clinical assessment, classification and prediction of malignant potential of oral lesions, thereby reducing its incidence and increasing the scope for early diagnosis and treatment of oral cancers. Herein we aim to review the role of apoptosis and genes associated with it in oral cancer development in order to aid in early diagnosis, prediction of malignant potential and evaluation of possible treatment targets in oral cancer. An internet-based search was done with key words apoptosis, genes, mutations, targets and analysis to extract 72 articles after considering inclusion and exclusion criteria. The knowledge of genetics and genomics of oral cancer is of utmost need in order to stop the rising prevalence of oral cancer. Translational approach and interventions at the early stage of oral cancer, targeted destruction of cancerous cells by silencing or promoting involved genes should be the ideal intervention.
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Affiliation(s)
- Ruby Dwivedi
- DHR-MRU & Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Rahul Pandey
- DHR-MRU & Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Shaleen Chandra
- DHR-MRU & Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Divya Mehrotra
- DHR-MRU & Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
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Dwivedi R, Kumar S, Pandey R, Mahajan A, Nandana D, Katti DS, Mehrotra D. Polycaprolactone as biomaterial for bone scaffolds: Review of literature. J Oral Biol Craniofac Res 2020; 10:381-388. [PMID: 31754598 PMCID: PMC6854079 DOI: 10.1016/j.jobcr.2019.10.003] [Citation(s) in RCA: 247] [Impact Index Per Article: 61.8] [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: 09/11/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
Bone tissue engineering using polymer based scaffolds have been studied a lot in last decades. Considering the qualities of all the polymers desired to be used as scaffolds, Polycaprolactone (PCL) polyester apart from being biocompatible and biodegradable qualifies to an appreciable level due its easy availability, cost efficacy and suitability for modification. Its adjustable physio-chemical state, biological properties and mechanical strength renders it to withstand physical, chemical and mechanical, insults without significant loss of its properties. This review aims to critically analyse the efficacy of PCL as a biomaterial for bone scaffolds.
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Affiliation(s)
- Ruby Dwivedi
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, KGMU, Lucknow, UP, India
| | - Sumit Kumar
- DHR-MRU, Faculty of Dental Sciences, KGMU, Lucknow, UP, India
| | - Rahul Pandey
- DHR-MRU, Faculty of Dental Sciences, KGMU, Lucknow, UP, India
| | - Aman Mahajan
- Department of Biological Sciences and Bioengineering, IIT Kanpur, UP, India
| | - Deepti Nandana
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, KGMU, Lucknow, UP, India
| | - Dhirendra S. Katti
- Department of Biological Sciences and Bioengineering, IIT Kanpur, UP, India
| | - Divya Mehrotra
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, KGMU, Lucknow, UP, India
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Sahu PK, Chandra L, Pandey RK, Mehta NS, Dwivedi R, Mishra VN, Prakash R. Fast Development of Self‐Assembled, Highly Oriented Polymer Thin Film and Observation of Dual Sensing Behavior of Thin Film Transistor for Ammonia Vapor. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Praveen Kumar Sahu
- Department of Electronics EngineeringIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Lalit Chandra
- Department of Electronics EngineeringIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Rajiv K. Pandey
- School of Materials Science and TechnologyIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Niraj Singh Mehta
- Department of Ceramic EngineeringIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - R. Dwivedi
- Department of Electronics EngineeringIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - V. N. Mishra
- Department of Electronics EngineeringIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Rajiv Prakash
- School of Materials Science and TechnologyIndian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
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Ahuja PD, Mhaske SP, Mishra G, Bhardwaj A, Dwivedi R, Mangalekar SB. Assessment of Root Resorption and Root Shape by Periapical and Panoramic Radiographs: A Comparative Study. J Contemp Dent Pract 2017. [PMID: 28621278 DOI: 10.5005/jp-journals-10024-2069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION One of the common findings encountered by the clinician at the end of orthodontic treatment is the apical root resorption. Root resorption occurs to various degrees. A severe form of root resorption is characterized by shortening of root for more than 4 mm or more than one-third of the total tooth length. A low incidence rate of resorption is observed based on radiographic findings for the diagnosis of root resorption, panoramic radiography, and periapical radiography. Hence, we evaluated the accuracy of panoramic radiographic films for assessing the root resorption in comparison with the periapical films. MATERIALS AND METHODS This study included the assessment of all the cases in which pre- and post-treatment radiographs were available for analysis of the assessment of the amount of root resorption. Complete records of 80 patients were analyzed. Examination of a total of 900 teeth was done. Mean age of the patients in this study was 21 years ranging from 11 to 38 years. The majority of the patients in the present study were females. All the treatments were carried out by registered experienced orthodontists having minimum experience of more than 10 years. All the cases were divided into two study groups. Group I comprised panoramic radiographic findings, while group II consisted of periapical radiographic findings. For the measurement of crown portion, root portion, and the complete root length, magnification loops of over 100 powers with parallax correction with inbuilt grids were used. Assessment of the tooth length and the crown length was done by the same observers. All the results were analyzed by Statistical Package for the Social Sciences software version 6.0. RESULTS Maximum amount of root resorption was observed in case of maxillary central incisors and canines among group I and II cases respectively. However, nonsignificant difference was obtained while comparing the mean root resorption in relation to maxillary incisors and canines among the two study groups. While comparing the overall value of root resorption among the two study groups, a significant difference was obtained. The maximum value of tooth length in both the groups was observed in cases of maxillary canines. Significant differences were observed while comparing the tooth length of various teeth among the two study groups. Among the deviated forms of root shape, dilacera-tion was the most common form of root shape detected in both the study groups. CONCLUSION Periapical radiographs are more efficient in the assessment of the shape and resorption of the root. CLINICAL SIGNIFICANCE Thorough evaluation of periapical radiographs is necessary for detection of even minute levels of root resorption.
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Affiliation(s)
- Puneeta D Ahuja
- Department of Conservative Dentistry and Endodontics, Rama Dental College, Kanpur, Uttar Pradesh, India, Phone: +919414509596, e-mail:
| | - Sheetal P Mhaske
- Department of Oral Pathology, M. A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra, India
| | - Gaurav Mishra
- Department of Public Health Dentsitry, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Atul Bhardwaj
- Department of Prosthodontic Dental Sciences, College of Dentistry, Majmaah University, Kingdom of Saudi Arabia
| | - Ruby Dwivedi
- Department of Oral Pathology, RKDF Dental College and Research Centre, Bhopal, Madhya Pradesh, India
| | - Sachin B Mangalekar
- Department of Periodontics, Dental College and Hospital Bharati Vidyapeeth Deemed University, Sangli, Maharashtra India
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Yadav S, Maurya SK, Anand G, Dwivedi R, Yadav D. Purification, characterization and retting of Crotolaria juncea fibres by an alkaline pectin lyase from Fusarium oxysporum MTCC 1755. 3 Biotech 2017; 7:136. [PMID: 28593518 DOI: 10.1007/s13205-017-0750-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 01/30/2017] [Indexed: 11/30/2022] Open
Abstract
Using solid-state fermentation, production of an industrially important pectin lyase from a fungal strain Fusarium oxysporum MTCC 1755 was attempted, which was further subjected to purification and characterization. The enzyme was purified by three steps, namely ammonium sulfate fractionation, cation-exchange chromatography on CM cellulose followed by gel filtration chromatography using Sephadex G-100 column. A 16-fold purification with 31.2% yield and 3.2 U/mg specific activity was achieved. The optimum pH of the purified enzyme was 9.0 and stability ranged from pH 5.0-7.0 for 24 h. Optimum temperature of purified enzyme was found to be 40 °C while temperature stability ranged from 10 to 50 °C for 30 min. The K m and k cat of the enzyme was 1.75 mg/ml and 83.3 s-1, respectively. The purified enzyme was found to be highly stimulated by Ca2+ ions while sugars like mannitol and sorbitol, and salts like NaCl and CaCl2 enhanced the thermostability. The purified pectin lyase was found suitable for retting of Crotolaria juncea fiber.
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Affiliation(s)
- S Yadav
- Department of Biotechnology, DDU Gorakhpur University, Gorakhpur, 273009, India.
| | - S K Maurya
- Department of Biotechnology, DDU Gorakhpur University, Gorakhpur, 273009, India
| | - G Anand
- Department of Biotechnology, DDU Gorakhpur University, Gorakhpur, 273009, India
| | - R Dwivedi
- Department of Biotechnology, DDU Gorakhpur University, Gorakhpur, 273009, India
| | - D Yadav
- Department of Biotechnology, DDU Gorakhpur University, Gorakhpur, 273009, India
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17
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Agrawal A, Shrivastava J, Dwivedi R, Siddiqui M. Assessment of serum apolipoprotein B and apolipoprotein A-1 and their ratio in healthy full term small for gestational age newborns. J Neonatal Perinatal Med 2017; 10:49-53. [PMID: 28304324 DOI: 10.3233/npm-1672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Programmed changes in growth restricted fetuses can increase the risk of adulthood diseases due to elevated serum cholesterol and apolipoprotein-B (Apo-B) concentrations. Increasing evidence demonstrated the role of apoB/apoA-I ratio as a strong risk factor for cardiovascular diseases. OBJECTIVE To determine the concentration of cord blood lipoproteins and apolipoproteins as well as their correlation with birth weight. METHODS This cross-sectional study was conducted in a teaching institution in central India. Healthy full-term newborns, born out of normal vaginal deliveries, were recruited. Cases include term small for gestational age (SGA) babies while term appropriate for gestational age (AGA) babies were taken as controls. Their umbilical venous blood was collected and sent for biochemical analysis. RESULTS Out of 126 healthy newborns, 66 were cases and 60 were controls. Mean values of serum triglyceride (141.56±69.67 mg/dl vs. 113.67±33.38 mg/dl; p < 0.006; 95% CI = 8.31 to 47.46) and serum apo-B/apo-A-1 ratio (0.67±0.28 vs. 0.55±0.20; p < 0.007; 95% CI = 0.033 to 0.206) were significantly high and that of serum high density cholesterol (35.84±10.42 mg/dl vs. 40.73±11.70 mg/dl; p < 0.014; 95% CI = -8.79 to -0.98) and Apo-A1 [87.59±12.44 mg/dl vs. 101.87±35.07 mg/dl; p = 0.002; 95% CI = -23.39 to -5.16) were significantly low in SGA newborns. Serum cholesterol, very low-density cholesterol rlow-density cholesterol rand Apo-B did not show any significant difference. Among SGA newborns significant negative correlation was seen between birth weight and apo-B/apo-A1 and serum triglyceride, while birth weight and serum apo-A1 level showed significant positive correlation. There was no statistically significant correlation between birth weight and other parameters. CONCLUSION These findings further support the association of prenatal factors with lipid profile rand can serve as starting point for studying lipid transport system changes during early life in Indian population.
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Zaidi I, Singh S, Sinha A, Dwivedi R. Current views and implications of journal impact factor: A key note. South Asian J Cancer 2016; 5:191. [PMID: 28032087 PMCID: PMC5184757 DOI: 10.4103/2278-330x.195342] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Iram Zaidi
- Department of Pediatric and Preventive Dentistry, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Shikha Singh
- Department of Pediatric and Preventive Dentistry, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Anju Sinha
- Department of Oral Pathology and Microbiology, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Ruby Dwivedi
- Department of Oral Pathology and Microbiology, MGS Dental College, Sri Ganganagar, Rajasthan, India
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Priyaja P, Dwivedi R, Sini S, Hatha M, Saravanane N, Sudhakar M. Remote sensing of bacterial response to degrading phytoplankton in the Arabian Sea. Environ Monit Assess 2016; 188:662. [PMID: 27837363 DOI: 10.1007/s10661-016-5666-8] [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: 01/20/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
A remote sensing technique has been developed to detect physiological condition of phytoplankton using in situ and moderate imaging spectroradiometer (MODIS)-Aqua data. The recurring massive mixed algal bloom of diatom and Noctiluca scintillans in the Northern Arabian Sea during winter-spring was used as test bed to study formation, growth and degradation of phytoplankton. The ratio of chlorophyll (chl) to particulate organic carbon (POC) was considered as an indicator of phytoplankton physiological condition and used for the approach development. Algal blooms represent the areas of new production, and therefore, knowledge of their degradation is important to the study microbial loop and export carbon flux. Relation of chl/POC ratio with bacterial abundance revealed Gaussian distribution. Bacteria were strongly correlated with POC, and hence, the latter which is available from satellite data could be used as a proxy for remote assessment of bacteria. Thresholds for active and degrading phytoplankton were determined using the ratio computed from the satellite data. The criteria were implemented on MODIS data to generate an image representing distribution of degrading algal bloom. Bacteria abundance data from two validation cruises during dinoflagellate and cyanobacteria bloom confirmed well match up of phytoplankton degradation information from the satellite. Comparison of environmental parameters during decay phase of dinoflagellate (N. scintillans bloom (winter) and Trichodesmium bloom (summer) revealed that degradation after active Trichodesmium bloom was more severe as compared to the N. scintillans. The present study also highlights the prediction capability of phytoplankton degradation using a time series of satellite retrieved chlorophyll/POC images.
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Affiliation(s)
- P Priyaja
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
| | - R Dwivedi
- Indian National Centre for Ocean Information Services, Hyderabad, India.
| | - S Sini
- Cochin University of Science and Technology, Kochi, 682 022, India
| | - M Hatha
- Cochin University of Science and Technology, Kochi, 682 022, India
| | - N Saravanane
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
| | - M Sudhakar
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
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Dwivedi R, Priyaja P, Rafeeq M, Sudhakar M. MODIS-Aqua detects Noctiluca scintillans and hotspots in the central Arabian Sea. Environ Monit Assess 2016; 188:50. [PMID: 26690080 DOI: 10.1007/s10661-015-5041-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 12/08/2015] [Indexed: 06/05/2023]
Abstract
Northern Arabian Sea is considered as an ecologically sensitive area as it experiences a massive upwelling and long-lasting algal bloom, Noctiluca scintillans (green tide) during summer and spring-winter, respectively. Diatom bloom is also found to be co-located with N. scintillans and both have an impact on ecology of the basin. In-house technique of detecting species of these blooms from Moderate Resolution Imaging Spectroradiometer (MODIS)-Aqua data was used to generate a time-series of images revealing their spatial distribution. A study of spatial-temporal variability of these blooms using satellite data expressed a cyclic pattern of their spread over a period of 13 years. An average distribution of the blooms for January-March period revealed a peak in 2015 and minimum in 2013. Subsequently, a time-series of phytoplankton species images were generated for these 2 years to study their inter-annual variability and the associated factors. Species images during active phase of the bloom (February) in 2015 indicated development of N. scintillans and diatom in the central Arabian Sea also, up to 12° N. This observation was substantiated with relevant oceanic parameters measured from the ship as well as satellite data and the same is highlight of the paper. While oxygen depletion and release of ammonia associated with N. scintillans are detrimental for waters on the western side; it is relatively less extreme and supports the entire food chain on the eastern side. In view of these contrasting eco-sensitive events, it is a matter of concern to identify biologically active persistent areas, hot spots, in order to study their ecology in detail. An ecological index, persistence of the bloom, was derived from the time-series of species images and it is another highlight of our study.
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Affiliation(s)
- R Dwivedi
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India.
| | - P Priyaja
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
| | - M Rafeeq
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
| | - M Sudhakar
- Centre for Marine Living Resources and Ecology (MoES), Kochi, 682 037, India
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Dwivedi R, Joshi R, Panthi S, Byanjankar S, Shrestha R. Outcome of Both Bone Forearm Fracture Fixation in Children by Rush Nails. JNMA J Nepal Med Assoc 2015; 53:244-249. [PMID: 27746464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
INTRODUCTION Forearm fractures are common upper limb injuries among children and usually treated non-operatively. Failure of non-operative treatment, open injuries and multiple fractures are the indications for surgery in paediatric both bone forearm fractures. Intramedullary nailing is considered as minimally invasive procedure with excellent to fair outcomes but it is not free of complications. We reviewed the results and evaluated the outcomes of IM fixation of forearm fractures in children by Rush nails to understand the risks and complications associated with these procedures. METHODS A retrospective crossectional study of all paediatric patients treated for diaphyseal forearm fractures for period of five years in a tertiary care setup. Complications were classified according to modified Clavien-Dindo complication classification system. Outcomes were graded depending upon complication grade along with range of motion of forearm. RESULTS A total of 25 patients were included in the study. Mean time for fracture union was 10.56 weeks. Outcomes were excellent in 16 (64%), good in 7 (28%), fair in 2 (8%) patients and no poor outcome was noted. Ten minor complications were seen. CONCLUSION Fixation of paediatric forearm fractures by intramedullary Rush nail is minimally invasive procedure and outcomes are excellent to fair with acceptable complication rates.
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Affiliation(s)
- R Dwivedi
- Department of Orthopaedics, Lumbini Medical College and Teaching Hospital, Tansen, Palpa, Nepal
| | - R Joshi
- Department of Orthopaedics, Lumbini Medical College and Teaching Hospital, Tansen, Palpa, Nepal
| | - S Panthi
- Department of Orthopaedics, Lumbini Medical College and Teaching Hospital, Tansen, Palpa, Nepal
| | - S Byanjankar
- Department of Orthopaedics, Lumbini Medical College and Teaching Hospital, Tansen, Palpa, Nepal
| | - R Shrestha
- Department of Orthopaedics, Lumbini Medical College and Teaching Hospital, Tansen, Palpa, Nepal
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Sinha A, Chandra S, Raj V, Zaidi I, Saxena S, Dwivedi R. Expression of p63 in potentially malignant and malignant oral lesions. J Oral Biol Craniofac Res 2015; 5:165-72. [PMID: 26605141 DOI: 10.1016/j.jobcr.2015.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 07/05/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND p63, a member of p53 family, known to be expressed in embryonic tissues and basal regenerative layers of many epithelial tissues in the adult, is also expressed in various benign and malignant lesions of body including lesions of oral cavity. To evaluate the expression of p63 and compare the expression qualitatively and quantitatively in normal buccal mucosa, epithelial dysplasia, oral submucous fibrosis (OSMF), and oral squamous cell carcinoma (OSCC). METHODS The study material consisted of 45 archival cases which were divided into Group I with 5 cases of normal buccal mucosa, Group II with 15 cases of epithelial dysplasia, and Group III with 10 cases of OSMF and 15 cases of OSCC. Immunohistochemical expression of p63 was assessed by using mean, standard deviation, and analysis of variance. RESULTS Overexpression of p63 was seen in epithelial dysplasia, OSMF, and squamous cell carcinoma with an increased suprabasal expression in cases of epithelial dysplasia. The mean labeling index (LI) of p63 was found to be in increasing order from normal oral mucosa (33.75%), OSMF (57.37%), epithelial dysplasia (63.87%) to squamous cell carcinoma (69.76%). CONCLUSION The results suggest a possible role of p63 in oral carcinogenesis, and an increased LI as well as increased suprabasal expression of this gene in dysplastic lesions may have a potential to be utilized as a marker for premalignancy.
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Affiliation(s)
- Anju Sinha
- Senior Lecturer, Department of Oral Pathology & Microbiology, Shree Bankey Bihari Dental College and Research Center, Ghaziabad, U.P., India
| | - Shaleen Chandra
- Prof. & Head of Department, Department of Oral Pathology & Microbiology, Faculty of Dental Sciences, King George's Medical University, Lucknow, U.P., India
| | - Vineet Raj
- Reader, Department of Oral Pathology & Microbiology, Saraswati Dental College & Hospital, Lucknow, U.P., India
| | - Iram Zaidi
- Reader, Department of Pedodontics & Preventive Dentistry, Shree Bankey Bihari Dental College and Research Center, Ghaziabad, U.P., India
| | - Shikha Saxena
- Senior Lecturer, Department of Pedodontics & Preventive Dentistry, Shree Bankey Bihari Dental College and Research Center, Ghaziabad, U.P., India
| | - Ruby Dwivedi
- Senior Lecturer, Department of Oral Pathology & Microbiology, Daswani Dental College, Kota, Rajasthan, India
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Shankar V, Almeyda R, Lamyman A, Dwivedi R. Acute calcific prevertebral tendinitis. Assoc Med J 2015. [DOI: 10.1136/bmj.h2898] [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]
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Affiliation(s)
- Iram Zaidi
- Department of Pedodontics and Preventive Dentistry, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Shikha Singh
- Department of Pedodontics and Preventive Dentistry, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Anju Sinha
- Department of Oral Pathology and Microbiology, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India
| | - Ruby Dwivedi
- Department of Oral Pathology and Microbiology, MGS Dental College, Sri Ganganagar, Rajasthan, India
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Dwivedi R, Rafeeq M, Smitha BR, Padmakumar KB, Thomas LC, Sanjeevan VN, Prakash P, Raman M. Species identification of mixed algal bloom in the Northern Arabian Sea using remote sensing techniques. Environ Monit Assess 2015; 187:51. [PMID: 25638059 DOI: 10.1007/s10661-015-4291-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 01/11/2015] [Indexed: 06/04/2023]
Abstract
Oceanic waters of the Northern Arabian Sea experience massive algal blooms during winter-spring (mid Feb-end Mar), which prevail for at least for 3 months covering the entire northern half of the basin from east to west. Ship cruises were conducted during winter-spring of 2001-2012 covering different stages of the bloom to study the biogeochemistry of the region. Phytoplankton analysis indicated the presence of green tides of dinoflagellate, Noctiluca scintillans (=N. miliaris), in the oceanic waters. Our observations indicated that diatoms are coupled and often co-exist with N. scintillans, making it a mixed-species ecosystem. In this paper, we describe an approach for detection of bloom-forming algae N. scintillans and its discrimination from diatoms using Moderate Resolution Imaging Spectroradiometer (MODIS)-Aqua data in a mixed-species environment. In situ remote sensing reflectance spectra were generated using Satlantic™ hyperspectral radiometer for the bloom and non-bloom waters. Spectral shapes of the reflectance spectra for different water types were distinct, and the same were used for species identification. Scatter of points representing different phytoplankton classes on a derivative plot revealed four diverse clusters, viz. N. scintillans, diatoms, non-bloom oceanic, and non-bloom coastal waters. The criteria developed for species discrimination were implemented on MODIS data and validated using inputs from a recent ship cruise conducted in March 2013.
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Affiliation(s)
- R Dwivedi
- Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, Kochi-37, India,
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Brar LS, Sharma RP, Dwivedi R. Effect of Vortex Finder Diameter on Flow Field and Collection Efficiency of Cyclone Separators. Particulate Science and Technology 2014. [DOI: 10.1080/02726351.2014.933144] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dwivedi R, Sah S, Dahal M, Acharya P, Gurung S. Close Versus Limited Open Method of Ender's Nail Fixation in Paediatric Femoral Shaft Fractures. JNMA J Nepal Med Assoc 2014; 52:806-810. [PMID: 26905709] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
INTRODUCTION There are various surgical options for treating fracture of femoral shaft in children. Here we compare the results of close with limited open method of Ender's nails fixation of femoral shaft fractures in children. METHODS We studied 60 children with femoral shaft fractures in age group 5-15 years. Ender's nail fixation was done by close technique in 40 cases and in 20 cases by limited open technique. RESULTS The mean operative time was significantly high in limited open group being 64 minutes in comparison to 50 minutes in close group. There was no significant difference between close and limited open groups with respect to time for partial weight bearing and time for full weight bearing. Fracture united sooner in close group as compared to open group. Union was achieved in all patients within a mean of 11 weeks in close group in comparison to 12.4 weeks in open group. According to the Flynn criteria in close group 34 patients had excellent results, 6 had satisfactory and none poor. In limited open group outcome was excellent in 14 patients, satisfactory in 4 patients and 2 had poor result. There was no significant difference in outcome based on Flynn criteria between two groups. CONCLUSIONS Though operative time is more and healing is delayed in Ender's nail fixation by limited open technique, there is no statistical difference in final outcome as per Flynn criteria between close and limited open technique of Ender's nail fixation of femoral shaft fractures in children.
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Affiliation(s)
- R Dwivedi
- Department of Orthopaedics, Lumbini Medical College Teaching Hospital, Tansen Palpa, Nepal
| | - S Sah
- Department of Orthopaedics, Koshi Zonal Hospital, Biratnagar, Koshi, Nepal
| | - M Dahal
- Department of Orthopaedics, Koshi Zonal Hospital, Biratnagar, Koshi, Nepal
| | - P Acharya
- Department of Orthopaedics, Civil Service Hospital, Kathmandu, Nepal
| | - S Gurung
- Department of Orthopaedics, Nepalgunj Medical College, Kohalpur, Nepal
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Hamadeh IS, Langaee TY, Dwivedi R, Garcia S, Burkley BM, Skaar TC, Chapman AB, Gums JG, Turner ST, Gong Y, Cooper-DeHoff RM, Johnson JA. Impact of CYP2D6 polymorphisms on clinical efficacy and tolerability of metoprolol tartrate. Clin Pharmacol Ther 2014; 96:175-81. [PMID: 24637943 PMCID: PMC4111800 DOI: 10.1038/clpt.2014.62] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [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: 12/18/2013] [Accepted: 03/07/2014] [Indexed: 01/13/2023]
Abstract
Metoprolol is a selective β-1 adrenergic receptor blocker that undergoes extensive metabolism by the polymorphic enzyme, CYP2D6. Our objective was to investigate the influence of CYP2D6 polymorphisms on efficacy and tolerability of metoprolol tartrate. 281 study participants with uncomplicated hypertension received 50 mg of metoprolol twice daily followed by response guided titration to 100 mg twice daily. Phenotypes were assigned based on results of CYP2D6 genotyping and copy number variation assays. Clinical response to metoprolol and adverse effect rates were analyzed in relation to CYP2D6 phenotypes by using appropriate statistical tests. Heart rate response differed significantly by CYP2D6 phenotype (p-value <0.0001) with poor metabolizers & intermediate metabolizers showing greater HR reduction. However, blood pressure response and adverse effect rates were not significantly different by CYP2D6 phenotype. Other than a significant difference in heart rate response, CYP2D6 polymorphisms were not a determinant of the variability in response or tolerability to metoprolol.
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Affiliation(s)
- I S Hamadeh
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - T Y Langaee
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - R Dwivedi
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - S Garcia
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - B M Burkley
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - T C Skaar
- Division of Clinical Pharmacology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - A B Chapman
- Renal Division, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - J G Gums
- 1] Department of Pharmacotherapy and Translational Research, University of Florida College of Pharmacy, Gainesville, Florida, USA [2] Department of Community Health and Family Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - S T Turner
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Y Gong
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - R M Cooper-DeHoff
- 1] Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA [2] Division of Cardiology, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - J A Johnson
- 1] Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, University of Florida College of Pharmacy, Gainesville, Florida, USA [2] Division of Cardiology, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
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Raj V, Chandra S, Bedi RS, Dwivedi R. Keratoameloblastoma: Report of a rare variant with review of literature. Dent Res J (Isfahan) 2014; 11:610-4. [PMID: 25426155 PMCID: PMC4241617] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ameloblastoma has intrigued clinicians as well as pathologists due to its diverse clinical behavior and histomorphologic presentations. Keratoameloblastoma is a rare histologic sub type, characterized by extensive keratin formation within ameloblastic epithelium, with only a handful number of cases described in the literature. Here, we report a case of this uncommon sub type of ameloblastoma in a young female patient presenting as an extensive lesion in mandibular ramus area. The radiological and fine needle aspiration findings suggested of a keratinizing cystic lesion and incisional biopsy showed features of ameloblastoma. Patient underwent segmental mandibulectomy and histological examination of excisional specimen revealed features of ameloblastoma with abundant keratinization leading to a diagnosis of keratoameloblastoma. The diagnostic pitfalls related with the lesion have been discussed along with a short review of the literature.
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Affiliation(s)
- Vineet Raj
- Department of Oral Pathology and Microbiology, Saraswati Dental College and Hospital, Lucknow, Uttar Pradesh, India,Address for correspondence: Dr. Vineet Raj, Department of Oral Pathology and Microbiology, Saraswati Dental College and Hospital, 233, Tiwariganj, Faizabad Road, Chinhat, Lucknow - 227 105, Uttar Pradesh, India. E-mail:
| | - Shaleen Chandra
- Department of Oral Pathology and Microbiology, Saraswati Dental College and Hospital, Lucknow, Uttar Pradesh, India
| | - Ravinder Singh Bedi
- Department of Oral and Maxillofacial Surgery, Saraswati Dental College and Hospital, Lucknow, Uttar Pradesh, India
| | - Ruby Dwivedi
- Department of Oral Pathology and Microbiology, Saraswati Dental College and Hospital, Lucknow, Uttar Pradesh, India
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Chaudhary AK, Chaudhary A, Tiwari SC, Dwivedi R. Can community-based, low-cost antenatal care in the third trimester of pregnancy reduce the incidence of low birth weight newborns? J Obstet Gynaecol India 2013; 62:286-90. [PMID: 23730031 DOI: 10.1007/s13224-012-0217-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Accepted: 05/28/2012] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE To determine if community-based, low-cost interventions during third trimester of pregnancy can reduce the incidence of low birth weight babies. METHODS In a case control study, 290 pregnant women from a slum area were registered in the beginning of third trimester of pregnancy and provided full antenatal care comprising fortnightly check up, one IFA tablet daily, counseling for minimum one-and-a-half hour post-lunch rest in left lateral position, additional diet to ensure minimum 2,200 kcal per day, and management of clinical conditions, if any. An equal number of pregnant women belonging to the same slum area were registered as control who received routine antenatal services from the existing health care facilities. The birth weight of the babies in the two groups were recorded and compared. Test of significance and correlation coefficient were applied to the data. RESULTS Mean birth weight of the babies of the Subjects was 2.76 kg (SD 0.39) compared to mean birth weight of 2.57 kg (SD 0.36) of the babies in the Control group. Incidence of low birth weight babies among subjects who consumed minimum 2,400 kcal per day, had one-and-a-half hour post-lunch rest in left lateral position and who consumed one tablet of IFA (100 mg iron and 5 mg folic acid) per day during the last trimester of pregnancy was lower (17.6 %) as compared with women in the Control group (36.2 %). The difference in the mean birth weight of newborns of the two groups was statistically significant (t = 2.52, p < 0.01). CONCLUSIONS Incidence of low birth weight babies can be significantly reduced by providing simple, low-cost care to pregnant women during the last trimester of pregnancy in the community setting.
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Affiliation(s)
- A K Chaudhary
- District Hospital, Bhopal, India ; Quarter No. 94/13-F, Tulsi Nagar, Bhopal, 462 003 India
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Choudhary AK, Choudhary A, Tiwari SC, Dwivedi R. Factors associated with low birth weight among newborns in an urban slum community in Bhopal. Indian J Public Health 2013; 57:20-3. [DOI: 10.4103/0019-557x.111362] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Abstract
Introduction: The surgical procedure by the anterior, posterior and combined antero-posterior approaches had applied for the treatment of cervical spondylotic myelopathy.
Methods: During the treatment process, all patients were pre-operatively as well post-operatively graded according to Japanese Orthopaedics Association. Several surgical methods such as anterior approach, posterior approach, and combined antero-posterior approach have been addressed for CSM patients, with the choice based on the pathogenesis of the myelopathy. The main indications for surgery were evidence of myelopathy on physical examinations, a JOA score below 13 points help with spinal cord compression observed on plain X-ray, CT scan, MRI studies.
Results: The pre-operative JOA scores were 7.60±1.23 in laminoplasty, 8.30±1.03 in diskectomy and corpectomy and 7.10±1.20 in combined antero-posterior approach patients. At the follow-up after three months the JOA scores were laminoplasty 13.30±1.30, diskectomy and corpectomy 13.55±1.15 and combined antero-posterior 13.50±1.08. The JOA recovery rate averaged, 61.08±11.25% in laminoplasty, 60.67±10.60% in diskectomy and corpectomy and 64.67±10.72% in combined anteroposterior approach. The high- signal intensity changed to normal in 18 out of 28 and no any kyphotic change and instability were found in cervical spine at the follow up.
Conclusions: Patients with OPLL (continuous, segmental and mixed type), stenosis of cervical spinal canal, multilevel cervical spondylosis, large and high ossification of IVDP with stenosis were improved with laminoplasty. Patients with PIVD, CSM with kyphosis, post laminectomy , OPLL herniated type, unstable vertebral alignment, stenosis by osteophytes, were improved with anterior approach . Ossified or deformed OPLL, unstable vertebral with stenosis ,OPLL or OYL with cervical meandearing (swan-neck) were improved with Combined anterior and posterior approach.
Keywords: cervical spondylotic mylopathy, anterior cervical diskectomy and fusion, corpectomy.
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Sah S, Wang L, Dahal M, Acharya P, Dwivedi R. Surgical management of cervical spondylotic myelopathy. JNMA J Nepal Med Assoc 2012; 52:172-177. [PMID: 23591248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
INTRODUCTION The surgical procedure by the anterior, posterior and combined antero-posterior approaches had applied for the treatment of cervical spondylotic myelopathy. METHODS During the treatment process, all patients were pre-operatively as well post-operatively graded according to Japanese Orthopaedics Association. Several surgical methods such as anterior approach, posterior approach, and combined antero-posterior approach have been addressed for CSM patients, with the choice based on the pathogenesis of the myelopathy. The main indications for surgery were evidence of myelopathy on physical examinations, a JOA score below 13 points help with spinal cord compression observed on plain X-ray, CT scan, MRI studies. RESULTS The pre-operative JOA scores were 7.60±1.23 in laminoplasty, 8.30±1.03 in diskectomy and corpectomy and 7.10±1.20 in combined antero-posterior approach patients. At the follow-up after three months the JOA scores were laminoplasty 13.30±1.30, diskectomy and corpectomy 13.55±1.15 and combined antero-posterior 13.50±1.08. The JOA recovery rate averaged, 61.08±11.25% in laminoplasty, 60.67±10.60% in diskectomy and corpectomy and 64.67±10.72% in combined antero-posterior approach. The high-signal intensity changed to normal in 18 out of 28 and no any kyphotic change and instability were found in cervical spine at the follow up. CONCLUSIONS Patients with OPLL (continuous, segmental and mixed type), stenosis of cervical spinal canal, multilevel cervical spondylosis, large and high ossification of IVDP with stenosis were improved with laminoplasty. Patients with PIVD, CSM with kyphosis, post laminectomy, OPLL herniated type, unstable vertebral alignment, stenosis by osteophytes, were improved with anterior approach. Ossified or deformed OPLL, unstable vertebral with stenosis, OPLL or OYL with cervical meandearing (swan-neck) were improved with Combined anterior and posterior approach.
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Affiliation(s)
- S Sah
- Department of Orthopaedic, Koshi Zonal Hospital, Biratnagar, Koshi, Nepal
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Dwivedi R, St. Rose S, Chisholm E, Clarke P, Kerawala C, Nutting C, Rhys-Evans P, Harrington K, Kazi R. 47. First speech-specific perceptual speech evaluation scale for head and neck cancer patients – Development and validation of the London speech evaluation scale. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.06.047] [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] Open
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Dwivedi R, Ham-Ying L, Snape J. Problem based review: the patient presenting with an acutely swollen arm. Acute Med 2012; 11:113-116. [PMID: 22685702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A 69 year old female presented to the Emergency Department with swelling of her right arm and elbow, one week following a fall which resulted in a fracture of the middle third of her right clavicle (Figure 1). The forearm was hot and tender and the arm and hand function were somewhat impaired by swelling, but sensation was intact. Initial bloods were unremarkable, apart from a mild neutrophilia.
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Affiliation(s)
- R Dwivedi
- Kings Mill Hospital, Sutton in Ashfield, Notts, NG17 4JL, UK
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Dwivedi R, St. Rose S, Roe J, Chisholm E, Bisase B, Nutting C. O7. A report on the reliability and validity of first speech-specific questionnaire “the English-version of Speech Handicap Index” in a cohort of English-speaking Head and Neck Cancer (HNC) patients. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dwivedi R, St. Rose S, Roe J, Khan A, Bisase B, Nutting C. O6. Validation of a new swallow specific tool in a subset of head and neck cancer (HNC) patients. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.117] [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: 10/18/2022]
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Dwivedi R, St. Rose S, Chisholm E, Heywood R, Kerawala C, Clarke P. O8. A report on the development and validation of a specific speech evaluation tool “The London Speech Evaluation ‘LSE’ scale” for Head and Neck Cancer (HNC) patients. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.119] [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: 10/18/2022]
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Sharma P, Neupane S, Shrestha M, Dwivedi R, Paudel K. An ultrasonographic evaluation of solitary muscular and soft tissue cysticercosis. Kathmandu Univ Med J (KUMJ) 2011; 8:257-60. [PMID: 21209548 DOI: 10.3126/kumj.v8i2.3571] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Cysticercosis in humans is infection with the larval form (cysticercus cellulosae) of the pork tapeworm T. solium. Encystment of larvae can occur in almost any tissue. The location of cysts in order of frequency is the central nervous system, subcutaneous tissue and striated muscle, vitreous humour of the eye and, rarely, other tissues. High resolution ultrasound can be used in the diagnosis of muscular and soft tissue cysticercosis. OBJECTIVE The aim of this study is to evaluate the ultrasonographic findings in cases of muscular and soft tissue cysticercosis. MATERIALS AND METHODS It was a retrospective review of the cases of muscular and soft tissue cysticercosis which were diagnosed by ultrasound during June 2007 to May 2009 in the department of Radiology and Imaging, Nepalgunj Medical College Teaching Hospital. A total of six patients were evaluated. RESULT There were four males and two females. Age of the patient ranged from 18 to 50 years. All of the patients presented with a swelling with pain in fi ve of them. There was a wide variation in the location of the cysts. In all cases ultrasound revealed a cystic lesion with an echogenic eccentric pedunculated nodule attached to the wall. The mean diameter of the cyst was 6mm. Smooth wall was present in fi ve cases whereas one of the cysts revealed irregular wall. Pericystic inflammatory changes were seen in the adjacent muscles. CONCLUSION Ultrasound is a safe and non-invasive method that can be used in the diagnosis of muscular and soft tissue cysticercosis.
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Affiliation(s)
- P Sharma
- Department of Radiology and Imaging, Nepalgunj Medical College, Banke, Nepal.
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Srivastava J, Pandey P, Mishra V, Dwivedi R. Structural and micro structural studies of PbO-doped SnO2 sensor for detection of methanol, propanol and acetone. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s1003-9953(10)60168-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tripathi RP, Pandey J, Kukshal V, Ajay A, Mishra M, Dube D, Chopra D, Dwivedi R, Chaturvedi V, Ramachandran R. Synthesis, in silico screening and bioevaluation of dispiro-cycloalkanones as antitubercular and mycobacterial NAD+-dependent DNA ligase inhibitors. Med Chem Commun 2011. [DOI: 10.1039/c0md00246a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Radheshyam A, Reddy VS, Dwivedi R, Prasad R. Kinetic studies and Mechanism Evolution of the Ammoxidation of 3-picoline Over V2O5/ZrO2 Catalyst. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450830213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kumar A, Sharma M, Dwivedi R, Visavadia B. Paediatric maxillofacial services: The impact of regionalisation. Br J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.bjoms.2007.07.161] [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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Bhat ML, Rasool Z, Kadri SM, Wani N, Hassan G, Mumtaz D, Qureshi W, Shiekh B, Dwivedi R. Cystic dysplasia of testis: a case report. J Clin Pathol 2006; 59:1002-3. [PMID: 16935982 PMCID: PMC1860477 DOI: 10.1136/jcp.2005.032888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dwivedi R, Saha S, Chowienczyk PJ, Ritter JM. Block of Inward Rectifying K
+
Channels (K
IR
) Inhibits Bradykinin-Induced Vasodilatation in Human Forearm Resistance Vasculature. Arterioscler Thromb Vasc Biol 2005; 25:e7-9. [PMID: 15591222 DOI: 10.1161/01.atv.0000152610.40086.31] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
To investigate the possible involvement of inward rectifying K
+
channels (K
IR
) in the response of human resistance vessels to bradykinin in vivo.
Methods and Results—
Drugs were administered via the brachial artery in healthy male volunteers and forearm blood flow was measured by venous occlusion plethysmography. Inhibition of K
IR
by barium chloride (4 μmol min
−1
) alone or with additional inhibition of Na
+
/K
+
ATPase (ouabain 2.7 μmol min
−1
) reduced responses to bradykinin (30 pmol min
−1
), by 26±8.3% and 36±7.2%, respectively (each
P
<0 0.05). Barium with ouabain plus inhibitors of prostaglandin (PG) and nitric oxide synthesis inhibited but did not abolish responses to bradykinin (51±2.8% inhibition;
P
<0.01); norepinephrine (240 pmol min
−1
) caused similar reduction of baseline blood flow, as did this combination of inhibitors, but did not significantly inhibit the response to bradykinin. Barium plus ouabain did not significantly reduce responses to acetylcholine or albuterol.
Conclusion—
A component of the vasodilator response to bradykinin in human forearm vasculature is mediated by K
IR
.
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Affiliation(s)
- R Dwivedi
- Department of Clinical Pharmacology, GKT Division of Cardiovascular Medicine, St Thomas' Hospital, London, United Kingdom
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Khanna R, Ip K, Allums KK, Baik K, Abernathy CR, Pearton SJ, Heo YW, Norton DP, Ren F, Dwivedi R, Fogarty TN, Wilkins R. Effects of high dose proton irradiation on the electrical performance of ZnO Schottky diodes. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pssa.200409059] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Walenga RW, Kester M, Coroneos E, Butcher S, Dwivedi R, Statt C. Constitutive expression of prostaglandin endoperoxide G/H synthetase (PGHS)-2 but not PGHS-1 in hum an tracheal epithelial cells in vitro. Prostaglandins 1996; 52:341-59. [PMID: 8948503 DOI: 10.1016/s0090-6980(96)00101-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Primary cultures of human tracheal epithelial (HTE) cells cultured in vitro, in defined serum-free media, express prostaglandin endoperoxide G/H synthase (PGHS) activity and produce prostaglandin E2 (PGE2). In contrast to every other cell type studied to date, HTE cells appear to constitutively express PGHS-2, the 'inducible' form of the enzyme, while expressing little or no PGHS-1, the 'housekeeping' isoenzyme in vitro. Prostaglandin synthesis in HTE cells was reduced by a selective PGHS-2 inhibitor, N-[2-cyclohexyloyl-4-nitrophenyl] methane-sulfonamide (NS398), with an IC50 of approximately 1 microM. Immunoblotting and immunoprecipitation of enzymatic activity with isozyme-specific antisera revealed only the PGHS-2 isoform. Full length human cDNA probes detected only PGHS-2 message in Northern blots. Neither PGHS-2 activity nor mRNA levels were dependent on, nor stimulated by peptide growth factors present in the defined serum-free growth medium, or by serum. Prolonged maintenance in the absence of retinoic acid, however, lead to a decline in PGHS activity. Phorbol-myristate acetate (PMA) induced PGHS-2 activity and mRNA and neither PMA-induced, nor constitutive PGHS-2 expression was suppressed by corticosteroids. Actinomycin D-treatment for six hours reduced the PGHS-2 activity and mRNA to only 50% that of untreated cells, suggesting that PGHS-2 mRNA is extremely stable in these cells. HTE cells, at least in vitro, appear unique among prostaglandin-producing cells in that they express PGHS-2, constitutively, independent of regulation by growth factors, serum, or corticosteroids and fail to express PGHS-1 under any culture condition studied.
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Affiliation(s)
- R W Walenga
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA.
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Vishnoi A, Gopal R, Dwivedi R, Srivastava S. Distributed parameter analysis of dark I–V characteristics of the solar cell: estimation of equivalent lumped series resistance and diode quality factor. ACTA ACUST UNITED AC 1993. [DOI: 10.1049/ip-g-2.1993.0025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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