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Shana FS, Golda KS, Saneesh N, Arora D, Sugathan P. Energy measurement of 241Am- 9Be neutrons by tagged neutron time-of-flight. Appl Radiat Isot 2023; 193:110655. [PMID: 36669268 DOI: 10.1016/j.apradiso.2023.110655] [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: 07/29/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 01/15/2023]
Abstract
Neutron energy spectrum of a 241Am-9Be source was measured in the energy range of 0.3 to ∼ 6.5 MeV using γ-ray tagged neutron time-of-flight method. BC501A type organic liquid scintillator detector was used at a flight path of 175 cm to detect neutrons with good energy resolution. The de-excitation γ-ray emitted in coincidence with neutrons was detected using a fast BaF2 detector. The measured data has been compared with the ISO 8529-2 standard neutron reference spectrum and found good agreement in the overlapping energy region. Present measurement applied efficiency correction to the data and extended up to 0.3 MeV in the lower energy region compared to earlier reported measurement using similar technique.
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Affiliation(s)
- F S Shana
- Department of Physics, Govt. Arts and Science College, Calicut 673018, India
| | - K S Golda
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
| | - N Saneesh
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India; Department of Physics, University of Calicut, Thenhippalam, Kerala 673635, India
| | - D Arora
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - P Sugathan
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
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2
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Sharma V, Vats S, Arora D, Singh K, Prabuwono AS, Alzaidi MS, Ahmadian A. OGAS: Omni-directional Glider Assisted Scheme for autonomous deployment of sensor nodes in open area wireless sensor network. ISA Trans 2023; 132:131-145. [PMID: 36075782 DOI: 10.1016/j.isatra.2022.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/24/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Wireless Sensor Network (WSN) is built with the wireless interconnection of Sensor Nodes (SNs) generally deployed to monitor the changes within the environment of hostile, rugged, and unreachable target regions. The optimal placement of SNs is very important for the efficient and effective operation of any WSN. Unlike small and reachable regions, the deployment of the SNs in large-scale regions (e.g., forest regions, nuclear radiation affected regions, international border regions, natural calamity affected regions, etc.) is substantially challenging. Present paper deals with an autonomous air-bone scheme for the precise placement of SNs in such large-scale regions. It uses an Omni-directional Circular Glider (OCG) per SN. After being aerially dropped, SN pilots the OCG to glide itself to the predetermined locations (PL) within a target region. The major advantage of using OCG is its capability to quickly update the direction, during the flight (with turning radius = 0) toward its PL. The proposed uses a recursive path correction model to maintain the orientation of the gliding SN towards the PL. The simulation results, and the hardware implementation, indicate that the proposed model is effectively operational in the environmental winds. It is time-efficient and more accurate in the deployment of the SNs in comparison to existing state of art SN deployment models.
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Affiliation(s)
- Vikrant Sharma
- Department of Computer Science and Engineering, Graphic Era Hill University, Uttarakhand, India
| | - Satvik Vats
- Department of Computer Science and Engineering, Graphic Era Hill University, Uttarakhand, India
| | - D Arora
- Department of Bioinformatics Core, Purdue University, USA
| | - Karan Singh
- School of Computer and System Sciences, JNU, New Delhi, India.
| | - Anton Satria Prabuwono
- Faculty of Computing and Information Technology in Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Faculty of Information Technology, Universitas Budi Luhur, Jakarta Selatan 12260, Indonesia
| | - Mohammed S Alzaidi
- Department of Electrical Engineering, College of Engineering, Taif University, Taif 21944, Saudi Arabia
| | - Ali Ahmadian
- Department of Law, Economics and Human Sciences, Mediterranea University of Reggio Calabria, Reggio Calabria 89125, Italy; Department of Mathematics, Near East University, Nicosia, TRNC, Mersin 10, Turkey.
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3
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Verma S, Dhinsa K, Tripathi AM, Saha S, Yadav G, Arora D. Molar Incisor Hypomineralization: Prevalence, Associated Risk Factors, Its Relation with Dental Caries and Various Enamel Surface Defects in 8–16-year-old Schoolchildren of Lucknow District. Int J Clin Pediatr Dent 2022; 15:1-8. [PMID: 35528491 PMCID: PMC9016907 DOI: 10.5005/jp-journals-10005-2088] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Aim Methodology Results Conclusion Clinical significance How to cite this article
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Affiliation(s)
| | - Kavita Dhinsa
- Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Abhay Mani Tripathi
- Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sonali Saha
- Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, Uttar Pradesh, India
- Sonali Saha, Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, Uttar Pradesh, India, Phone: +91 9889234995, e-mail:
| | - Gunjan Yadav
- Sardar Patel Post Graduate Institute of Dental & Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Deval Arora
- Autonomous State Medical College, Shahjahanpur
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Gundewar MS, Saha S, Arora D, Dhinsa K, Tiwari S, Tripathi AM. Comparative Microleakage Evaluation through the Interfaces between the Tooth and Cement after Stainless Steel Crown Cementation in Primary Molars: An In Vitro Study. Int J Clin Pediatr Dent 2022; 15:159-163. [PMID: 37457215 PMCID: PMC10338948 DOI: 10.5005/jp-journals-10005-2359] [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] [Indexed: 11/02/2023] Open
Abstract
Introduction The longevity of stainless steel crowns is related to perfect adaptation and long-term union between restoration and teeth. In this respect, evaluation of marginal leakage of luting cement is essential. Aim and objective To compare and evaluate the ability of new adhesive cement to prevent microleakage under stainless steel crowns on primary teeth. Materials and methods Forty-five specimens were embedded, standardized preparations were made onto selected extracted primary molars, and stainless steel crowns were adapted. Samples were assigned randomly to cement groups: Glass ionomer (GI), resin-modified glass-ionomer (RMGI), and Adhesive resin (AR) cement, followed by storage in water, artificially aging, staining, sectioning, and the linear dye penetration and proportion of microleakage evaluation. Results AR showed the lowest microleakage, followed in increasing order by RMGIC and GIC showed the greatest microleakage (p-value < 0.0001). Clinical Significance There are many kinds of luting agents that vary considerably from the viewpoint of solubility, strength, and ability to adhere to the tooth structure. Lack of adhesion of the luting cement to the tooth structure is one of the reasons for microleakage related to different types of crowns. Cement breakdown may result in the entrance of fluids and microorganisms along with the tooth restoration interface. In this study, attempts were made to simulate standard clinical procedures, although this is not a substitute for the complex oral environment, the results provide useful information to choosing the best cement materials. Conclusion Adhesive resin cement can be recommended for cementation of Stainless Steel Crowns because of added advantages over others. How to cite this article Gundewar MS, Saha S, Arora D, et al. Comparative Microleakage Evaluation through the Interfaces between the Tooth and Cement after Stainless Steel Crown Cementation in Primary Molars: An In Vitro Study. Int J Clin Pediatr Dent 2022;15(2):159-163.
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Affiliation(s)
- Manjari S Gundewar
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sonali Saha
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Deval Arora
- Department of Dentistry, Autonomous State Medical College, Shahjahanpur, Uttar Pradesh, India
| | - Kavita Dhinsa
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | | | - Abhay M Tripathi
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
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Agrawal A, Arora D, Kumar A, Jain A, Doshi C. RAPID EYE: an Aid Memoir for Comprehensive Evaluation of Patient in Post-cardiac Surgery Recovery Unit. Indian J Surg 2021; 84:895-897. [PMID: 34518747 PMCID: PMC8425317 DOI: 10.1007/s12262-021-03102-8] [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] [Received: 08/04/2021] [Accepted: 08/28/2021] [Indexed: 11/04/2022] Open
Affiliation(s)
- A Agrawal
- Department of CVTS, U N Mehta Institute of Cardiology & Research Center, Ahmedabad, Gujarat India
| | - D Arora
- Holy Heart Hospital, Rohtak, Haryana India
| | - A Kumar
- Department of CVTS, U N Mehta Institute of Cardiology & Research Center, Ahmedabad, Gujarat India
| | - A Jain
- Department of CVTS, U N Mehta Institute of Cardiology & Research Center, Ahmedabad, Gujarat India
| | - C Doshi
- Department of CVTS, U N Mehta Institute of Cardiology & Research Center, Ahmedabad, Gujarat India
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Arora D, Rajmohan K, Dubey S, Dey M, Singh S, Nair V, Tiwari R, Tiwari S. Assessment of materno-foetal transmission of SARS-CoV-2: A prospective pilot study. Med J Armed Forces India 2021; 77:S398-S403. [PMID: 34334910 PMCID: PMC8313026 DOI: 10.1016/j.mjafi.2021.01.007] [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: 10/19/2020] [Accepted: 01/01/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The issue of vertical transmission of SARS-CoV-2 infection to the foetus has not yet been resolved. Its main reason is lack of a bigger study to analyse this question. The evidence of the affection of the foetus during antenatal or intrapartum period is limited to some anecdotal reports. To look for the possibility of vertical transmission of Severe Acute Respiratory Syndrome - Corona Virus-2 (SARS-CoV-2) infection to the foetus, this prospective pilot study was conducted at a tertiary health care COVID-19 designated centre of Armed Forces. METHODS This study was conducted during 01 June 2020 and 15 October 2020 and included 54 covid-positive pregnant mothers. During delivery, amniotic fluid and cord blood samples were collected in a sterile manner. Amniotic fluid samples were not collected during vaginal deliveries as chances of contamination was very high. These samples were tested for the presence of SARS-CoV-2 gene by Reverse Transcriptasee Polymerase Chain Reaction (RT-PCR) test, and the results were analysed. Newborns were allowed to room in with mother, and they underwent throat and nasal swab RT-PCR testing of covid within 24-48 h of delivery. RESULTS A total of 1520 pregnant mothers underwent RT-PCR test during the study period. Total positivity rate among our pregnant women was 2.8%. Out of 54 covid-positive women during the study period, amniotic fluid RT-PCR tests were carried out for 43 women, and cord blood was tested for 45 women. CONCLUSION RT-PCR test of amniotic fluid, cord blood and nasal and throat swab of all newborns delivered by SARS-CoV-2-positive pregnant women were negative. Based on our study, the possibility of intrauterine vertical transmission of SARS-CoV-2 infection appears to be unlikely.
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Affiliation(s)
- D. Arora
- Consultant & Head (Obst & Gynae), Trained in Maternal-fetal Medicine, Base Hospital, Delhi Cantt, India
| | - K.S. Rajmohan
- Senior Advisor & Head (Pathology), Base Hospital, Delhi Cantt, India
| | - Sudhir Dubey
- Classified Specialist (Pathology), Base Hospital, Delhi Cantt, India
| | - Madhusudan Dey
- Senior Adviser (Obst & Gynae), Trained in Maternal-Fetal Medicine, Base Hospital, Delhi Cantt, India
| | - Sanjay Singh
- Senior Adviser (Obst & Gynae), Base Hospital, Delhi Cantt, India
| | - V.G. Nair
- Classified Specialist (Obst & Gynae), Base Hospital, Delhi Cantt, India
| | - R.P. Tiwari
- Classified Specialist (Obst & Gynae), Base Hospital, Delhi Cantt, India
| | - Shyamji Tiwari
- Graded Specialist (Obst & Gynae), Base Hospital, Delhi Cantt, India
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Fabelurin C, Arora D. 511 A Case Report of A 16-Year-Old Girl with Peritoneal Tuberculosis. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Peritoneal Tuberculosis (PTB) is a rare extra-pulmonary manifestation of Mycobacterium tuberculosis infection. It usually presents with non-specific symptoms that can mimic other intra-abdominal pathology. Therefore, a high index of suspicion is needed for diagnosis and early treatment of PTB. Some of the intra-abdominal conditions in young patients that may have similar presentations to PTB include Crohns’ disease, ovarian pathology and acute appendicitis. Diagnosing PTB in the paediatric population tends to be even more challenging as an obvious history of exposure may be difficult to obtain. Diagnostic laparoscopic biopsy and histopathology provides definitive diagnosis. Most studies recommend a 6-month course of anti-TB therapy for abdominal tuberculosis with a planned regimen using Isoniazid, Rifampicin, Pyrazinamide and Ethambutol.
This case report presents the case of a 16-year-old girl who presented with a history of recurrent abdominal pain, vomiting and pyrexia. Radiological, laparoscopic, and histopathological findings were used for final diagnosis of this condition. The patient was treated using the anti-tuberculosis therapy for 6 months following which, she was able to make a full recovery.
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Affiliation(s)
| | - D Arora
- Royal Derby Hospital, Derby, United Kingdom
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8
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Arora TC, Arora D, Tripathi AM, Yadav G, Saha S, Dhinsa K, Gopalakrishnan N. An In-Vitro evaluation of resin infiltration system and conventional pit and fissure sealant on enamel properties in white spot lesions. J Indian Soc Pedod Prev Dent 2019; 30:686-693. [PMID: 31249175 DOI: 10.4103/1319-2442.261345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Clinically appearing early caries are referred to as white spot lesions (WSLs). These lesions compromise esthetics and precede cavitation; therefore, they must be halted by effective materials. AIM To evaluate and compare the depth of penetration and effect of resin infiltration system (Icon) and other conventional pit and fissure sealants (Clinpro and Embrace) on enamel surface properties of WSLs. METHODOLOGY Freshly extracted premolars were obtained. Enamel surfaces were treated with resin infiltrant and fissure sealant. Depth of penetration and surface roughness of specimens were measured with an optical profilometer. Microhardness was determined by a Vickers' hardness tester. STATISTICAL ANALYSIS Normality of the data was checked by Shapiro-Wilk test. Inferential statistics were performed using one-way analysis of variance. Post hoc pairwise comparison was done using post hoc Tukey's test. RESULTS Icon resin infiltrant showed the highest depth of penetration and microhardness followed in descending order by Embrace and Clinpro whereas Clinpro was found to cause maximum surface roughness followed in descending order by Embrace and Icon. CONCLUSION The resin infiltration technique for treating WSLs seems adjusted to the philosophy of minimally invasive dentistry in a single appointment, making it beneficial for the patients, especially children.
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Affiliation(s)
- Tarang Chadha Arora
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Deval Arora
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Abhay Mani Tripathi
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Gunjan Yadav
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sonali Saha
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Kavita Dhinsa
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
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Arora D, Chashoo G, Singamaneni V, Sharma N, Gupta P, Jaglan S. Bacillus amyloliquefaciens induces production of a novel blennolide K in coculture of Setophoma terrestris. J Appl Microbiol 2018; 124:730-739. [PMID: 29288594 DOI: 10.1111/jam.13683] [Citation(s) in RCA: 10] [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: 06/24/2017] [Revised: 12/19/2017] [Accepted: 12/22/2017] [Indexed: 01/29/2023]
Abstract
AIMS The discovery of known bioactive chemical leads from microbial monocultures hinders the efficiency of drug discovery programmes. Therefore, in recent years, the use of fungal-bacterial coculture experiments has gained considerable attention due to their ability to generate new bioactive leads. In this work, fungal strain Setophoma terrestris was cocultured with Bacillus amyloliquifaciens to discover novel bioactive compounds. MATERIALS AND METHODS The bioactive methanolic coculture extract was chosen for the isolation of compounds by chromatographic methods. The isolated compounds were characterized by NMR and mass spectrometric techniques. CONCLUSION Coculture extract has resulted in the production of five blennolides. The novel compound, blennolide K was found active against PC-3 (prostate) and MCF-7 (breast) cell lines with an IC50 value of 3·7 ± 0·6 and 4·8 ± 0·4 μmol l-1 respectively. Furthermore, the nuclear morphology study in PC-3 cells after treatment with blennolide K, demonstrated chromatin condensation, formation of apoptotic bodies and shrinkage of cells. SIGNIFICANCE AND IMPACT OF THE STUDY To our knowledge, only few studies have reported the induction of bioactive compounds by coculture having long-distance inhibition morphology. This is principally due to the low occurrences of such morphology. Our study demonstrates the impact of coculture on production of new chemical leads in drug discovery programmes.
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Affiliation(s)
- D Arora
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), Jammu, India
| | - G Chashoo
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - V Singamaneni
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - N Sharma
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), Jammu, India
| | - P Gupta
- Academy of Scientific & Innovative Research (AcSIR), Jammu, India.,Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - S Jaglan
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), Jammu, India
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Dubey S, Saha S, Tripathi AM, Bhattacharya P, Dhinsa K, Arora D. A comparative evaluation of dental caries status and salivary properties of children aged 5-14 years undergoing treatment for acute lymphoblastic leukemia, type I diabetes mellitus, and asthma - In vivo. J Indian Soc Pedod Prev Dent 2018; 36:283-289. [PMID: 30246751 DOI: 10.4103/jisppd.jisppd_46_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The subjective sensation of dry mouth, xerostomia, is a well-recognized problem in adults, however, relatively little attention has been paid to this issue in children. Xerostomia commonly occurs as an adverse effect of drugs in asthma and leukemia, which alter the composition and flow of saliva and systemic diseases, including diabetes. It decreases the oral pH and significantly increases the development of plaque and dental caries. AIM This study aims to evaluate and compare the dental caries status and salivary properties of children aged 5-14 years undergoing treatment for acute lymphoblastic leukemia, type 1 diabetes mellitus, and asthma - in vivo. MATERIALS AND METHODS The study was divided into two parts: Part I: Oral examination was performed and dental caries status Decayed, Missing, Filled Teeth/ decayed, extraction, filled teeth (DMFT/deft) was noted and Part II: Salivary analysis was performed by GC Saliva-Check BUFFER kit to check for hydration, viscosity, pH of saliva, salivary flow, and buffering capacity. STATISTICAL ANALYSIS All statistical analysis was performed using the SPSS 21 statistical software version. Inferential statistics were performed using Chi-square test and ANOVA. Post hoc pairwise comparison was done using Post hoc Tukey's test. RESULTS The prevalence of mean DMFT/deft with regard to salivary properties was highest in leukemic patients followed in descending order by diabetic and asthmatic patients. CONCLUSIONS Leukemic patients had significantly higher caries and decreased salivary properties while asthmatic patients showed the least caries prevalence and best salivary properties.
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Affiliation(s)
- Shreya Dubey
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sonali Saha
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Abhay Mani Tripathi
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Piyali Bhattacharya
- Department of Pediatrics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Kavita Dhinsa
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Deval Arora
- Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
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Sharma N, Kushwaha M, Arora D, Jain S, Singamaneni V, Sharma S, Shankar R, Bhushan S, Gupta P, Jaglan S. New cytochalasin from Rosellinia sanctae-cruciana, an endophytic fungus of Albizia lebbeck. J Appl Microbiol 2018; 125:111-120. [PMID: 29573314 DOI: 10.1111/jam.13764] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/26/2017] [Accepted: 03/12/2018] [Indexed: 01/18/2023]
Abstract
AIM To explore the potential of Rosellinia sanctae-cruciana an endophytic fungus associated with Albizia lebbeck for pharmaceutically important cytotoxic compounds. METHODS AND RESULTS One novel cytochalasin, named jammosporin A (1) and four known analogues (2-5) were isolated from the culture of the endophytic fungus R. sanctae-cruciana, harboured from the leaves of the medicinal plant A. lebbeck. Their structures were elucidated by extensive spectroscopic analyses including one-dimensional and two-dimensional nuclear magnetic resonance data along with MS data and by comparison with literature reports. In preliminary screening the ethyl acetate extract of the fungal culture was tested for cytotoxic activity against a panel of four cancer cell lines (MOLT-4, A549, MIA PaCa-2 and MDA-MB-231), and found to be active against MOLT-4 with an IC50 value of 10 μg ml-1 . Owing to the remarkable cytotoxic activity of the extract the isolated compounds (1-5) were evaluated for their cytototoxicity against the MOLT-4 cell line by MTT assay. Interestingly, compounds 1-2, 4 and 5 showed considerable cytotoxic potential against the human leukaemia cancer cell line (MOLT-4) with IC50 values of 20·0, 10·0, 8·0 and 6·0 μmol l-1 , respectively, while compound 3 showed an IC50 value of 25 μmol l-1 . This is the first report of the existence of this class of secondary metabolites in R. sanctae-cruciana fungus. CONCLUSION This study discovered a novel compound, named jammosporin A, isolated for the first time from R. sanctae-cruciana, an endophytic fungus of A. lebbeck with anticancer activity against the MOLT-4 cell line. SIGNIFICANCE AND IMPACT OF THE STUDY Rosellinia sanctae-cruciana represents an interesting source of a new compound with bioactive potential as a therapeutic agent against a human leukaemia cancer cell line (MOLT-4).
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Affiliation(s)
- N Sharma
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific and Innovative Research (AcSIR), Jammu, India
| | - M Kushwaha
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - D Arora
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific and Innovative Research (AcSIR), Jammu, India
| | - S Jain
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - V Singamaneni
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - S Sharma
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - R Shankar
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - S Bhushan
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Indian Pharmacopoeia Commission, Ghaziabad, India
| | - P Gupta
- Academy of Scientific and Innovative Research (AcSIR), Jammu, India.,Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - S Jaglan
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific and Innovative Research (AcSIR), Jammu, India
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Arora D, Gérardin K, Raël S, Bonnet C, Lapicque F. Effect of supercapacitors directly hybridized with PEMFC on the component contribution and the performance of the system. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1188-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kinra M, Mudgal J, Arora D, Nampoothiri M. An insight into the role of cyclooxygenase and lipooxygenase pathway in renal ischemia. Eur Rev Med Pharmacol Sci 2017; 21:5017-5020. [PMID: 29164555] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Renal ischemia (RI) is a clinical condition that occurs due to marked decrease in renal blood flow. The pathophysiology of RI is interlinked with atherosclerotic renal artery stenosis, infarction, organ transplantation and sepsis. The mechanism of RI injury depends on various factors such as inflammatory response, oxidative stress and apoptosis. In this review, we evaluate the role of cyclooxygenase and lipoxygenase in modulating the process of ischemic renal injury. MATERIALS AND METHODS This is a literature review of articles published on PubMed and Web of Science in English. RESULTS RI is characterized by an inflammatory response and oxidative stress, which are further worsened by the metabolites of the arachidonic acid pathway. CONCLUSIONS RI results from a vigorous process involving inflammation and some mediators in a multifaceted interaction. Indulgence of oxidative stress and lipid peroxidation seems to be major factors which promote the inflammation process during RI.
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Affiliation(s)
- M Kinra
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, India.
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Aggarwal G, Tiwari AK, Dorwal P, Chauhan R, Arora D, Dara RC, Kher V. Successful Renal Transplantation Across HLA Barrier: Report from India. Indian J Nephrol 2017; 27:210-214. [PMID: 28553042 PMCID: PMC5434688 DOI: 10.4103/0971-4065.200518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Organ donors are sometimes found “unsuitable” due to the presence of donor-specific anti-HLA antibodies in the recipient. In recent years, improved desensitization protocols have successfully helped to overcome HLA incompatibility hurdle. We present three cases where optimum desensitization was achieved in patients with the donor-specific anti-HLA antibody (DSA) leading to successful renal transplantation. All patient–donor pair underwent HLA typing, complement dependent cytotoxicity crossmatch (CDC-XM), flow cytometry XM (FC-XM), and panel reactive antibody. If any of the three tests was positive, single antigen bead assay was performed to determine the specificity of the anti-HLA antibody (s). Patients with DSA were offered organ-swap or anti-HLA antibody desensitization followed by transplantation. Desensitization protocol consisted of single dose rituximab and cascade plasmapheresis (CP) along with standard triple immunosuppression. The target DSA mean fluorescence index (MFI) was <500, along with negative CDC-XM and FC-XM for both T- and B-cells. Three patients with anti-HLA DSA, who did not find a suitable match in organ swap program, consented to anti-HLA antibody desensitization, followed by transplantation. Mean pre-desensitization antibody MFI was 1740 (1422–2280). Mean number of CP required to achieve the target MFI was 2.3 (2–3). All the three patients are on regular follow-up and have normal renal function test at a mean follow-up of 8 months. This report underlines successful application of desensitization protocol leading to successful HLA-antibody incompatible renal transplants and their continued normal renal functions.
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Affiliation(s)
- G Aggarwal
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - A K Tiwari
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - P Dorwal
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - R Chauhan
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - D Arora
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - R C Dara
- Department of Transfusion Medicine, Medanta-The Medicity, Gurgaon, Haryana, India
| | - V Kher
- Kidney and Urology Institute, Medanta-The Medicity, Gurgaon, Haryana, India
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Jindal N, Kalra N, Arora S, Arora D, Bansal R. Onychomycosis of toenails caused by Syncephalastrum racemosum: A rare non-dermatophyte mould. Indian J Med Microbiol 2016; 34:257-8. [PMID: 27080794 DOI: 10.4103/0255-0857.176844] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | - N Kalra
- Department of Microbiology, Guru Gobind Singh Medical College and Hospital, Faridkot, Punjab, India
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Abstract
Renal infarction usually occurs against a background of heart disease or a thromboembolic tendency and rarely is associated with infections. Here we present a case of a young boy who reported with painless gross hematuria following primary Varicella infection and was found to have an isolated renal infarct.
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Jhavar S, Pruszynski J, Fang-Hollingsworth Y, Vyas S, Arora D, Gestaut M, Olek D, Axelrud G, Hasan S, Ord C, Mutyala S, Deb N, Swanson G. Identifying Patients at High Risk for Local Relapse After Radical Nephrectomy for Nonmetastatic Renal Cell Carcinoma. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Olek D, Vyas S, Gestaut M, Arora D, Jhavar S, Hasan S, Thawani N, Ord C, Deb N, Smith J, Mutyala S. Superficial X-rays Versus Surface Brachytherapy for Non-Melanoma Skin Cancer: A Matched Pair Analysis. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2162] [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: 12/01/2022]
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Gestaut M, Jhavar S, Vyas S, Arora D, Olek D, Hasan S, Axelrud G, Deb N, Thawani N, Mutyala S. Rectal Toxicity in Cervical Cancer After Intensity Modified Radiation Therapy and High-Dose-Rate Brachytherapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Arora D, Hasan S, Male E, Pruszynski J, Ord C, Rao A. Prognostic Factors Affecting Outcomes in Triple Negative Breast Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.626] [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: 11/30/2022]
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Chawla J, Arora D, Paul M, Ajmani SN. Emergency Obstetric Hysterectomy: A Retrospective Study from a Teaching Hospital in North India over Eight Years. Oman Med J 2015; 30:181-6. [PMID: 26171124 DOI: 10.5001/omj.2015.39] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 04/20/2015] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES We sought to determine the frequency, demographic characteristics, indications, and feto-maternal outcomes associated with emergency peripartum hysterectomy in an easily accessible urban center. METHODS We conducted a retrospective, observational, and analytical study over a period of eight years, from August 2006 to July 2014. A total of 56 cases of emergency obstetric hysterectomy (EOH) were studied in the Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi. RESULTS The incidence of EOH in our study was 30 per 100,000 following vaginal delivery and 270 per 100,000 following cesarean section. The overall incidence was 83 per 100,000 deliveries. Atonic postpartum hemorrhage (25%) was the most common indication followed by placenta accreta (21%) and uterine rupture (17.5%). The most frequent sequelae were febrile morbidity (19.2%) and disseminated intravascular coagulation (13.5%). Maternal mortality was 17.7% whereas perinatal mortality was 37.5%. CONCLUSIONS A balanced approach to EOH can prove to be lifesaving at times when conservative surgical modalities fail and interventional radiology is not immediately available. Our study highlights the place of extirpative surgery in modern obstetrics in the face of rising rates of cesarean section and multiple pregnancies particularly in urban settings in developing countries.
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Affiliation(s)
- Jaya Chawla
- Department of Obstetrics and Gynecology, Army College of Medical Sciences & Base Hospital, New Delhi, India
| | - D Arora
- Department of Obstetrics and Gynecology, Army College of Medical Sciences & Base Hospital, New Delhi, India
| | - Mohini Paul
- Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India
| | - Sangita N Ajmani
- Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India
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Arora D, Axelrud G, Rangaraj D, Patel M, Deb N, Mutyala S, Thawani N. Dosimetric Analysis of Brainstem Dose Constraints for Linac-Based Radiosurgery for Medical Management Refractory Trigeminal Neuralgia. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2013] [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: 11/15/2022]
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Jain A, Arora D, Juneja R, Mehta Y, Trehan N. Life threatening tension pneumothorax during cardiac surgery. A case report. Heart Lung Vessel 2014; 6:204-7. [PMID: 25279363 PMCID: PMC4181282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Tension pneumothorax is a life threatening condition that occurs when the intrapleural pressure exceeds atmospheric pressure. It requires prompt diagnosis and immediate treatment. Tension pneumothorax developing postoperatively after cardiac surgery is not uncommon but occurrence in the operating room during cardiac surgery is rare. We report a case of tension pneumothorax intraoperatively during off pump coronary artery bypass grafting.
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Arora D, Gross T, Brueggeman R. Allele characterization of genes required for rpg4-mediated wheat stem rust resistance identifies Rpg5 as the R gene. Phytopathology 2013; 103:1153-1161. [PMID: 23841622 DOI: 10.1094/phyto-01-13-0030-r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A highly virulent form of the wheat stem rust pathogen Puccinia graminis f. sp. tritici race TTKSK is virulent on both wheat and barley, presenting a major threat to world food security. The recessive and temperature-sensitive rpg4 gene is the only effective source of resistance identified in barley (Hordeum vulgare) against P. graminis f. sp. tritici race TTKSK. Efforts to position clone rpg4 localized resistance to a small interval on barley chromosome 5HL, tightly linked to the rye stem rust (P. graminis f. sp. secalis) resistance (R) gene Rpg5. High-resolution genetic analysis and post-transcriptional gene silencing of the genes at the rpg4/Rpg5 locus determined that three tightly linked genes (Rpg5, HvRga1, and HvAdf3) are required together for rpg4-mediated wheat stem rust resistance. Alleles of the three genes were analyzed from a diverse set of 14 domesticated barley lines (H. vulgare) and 8 wild barley accessions (H. vulgare subsp. spontaneum) to characterize diversity that may determine incompatibility (resistance). The analysis determined that HvAdf3 and HvRga1 code for predicted functional proteins that do not appear to contain polymorphisms determining the compatible (susceptible) interactions with the wheat stem rust pathogen and were expressed at the transcriptional level from both resistant and susceptible barley lines. The HvAdf3 alleles shared 100% amino acid identity among all 22 genotypes examined. The P. graminis f. sp. tritici race QCCJ-susceptible barley lines with HvRga1 alleles containing the limited amino acid substitutions unique to the susceptible varieties also contained predicted nonfunctional rpg5 alleles. Thus, susceptibility in these lines is likely due to the nonfunctional RPG5 proteins. The Rpg5 allele analysis determined that 9 of the 13 P. graminis f. sp. tritici race QCCJ-susceptible barley lines contain alleles that either code for predicted truncated proteins as the result of a single nucleotide substitution, resulting in a stop codon at amino acid 161, a single cytosine indel causing a frame shift, and a stop codon at amino acid 217, or an indel that deleted the entire STPK domain. The three P. graminis f. sp. tritici race QCCJ-susceptible lines (Swiss landraces Hv489, Hv492, and Hv611) and the wild barley accession WBDC160 contain rpg5 alleles predicted to encode full-length proteins containing a nonsynonomous nucleotide substitution that results in the amino acid substitution E1287A. This amino acid substitution present in the uncharacterized C-terminal domain is not found in any resistant line and may be important to elicit the resistance reaction. These data suggest that rpg4-mediated resistance against many wheat stem rust pathogen races, including P. graminis f. sp. tritici race TTKSK, rely on the Rpg5 R gene; thus, rpg4- and Rpg5-mediated resistance rely on a common R gene and should not be considered completely distinct. The data also determined that Rpg5 gene-specific molecular markers could be used to detect rpg4-mediated wheat stem rust resistance for marker-assisted selection.
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Shamji M, Moon ES, Glennie R, Soroceanu A, Lin C, Bailey C, Simmonds A, Fehlings M, Dodwell E, Dold A, El-Hawary R, Hashem M, Dold A, Dold A, Jones S, Bailey C, Karadimas S, Whitehurst D, Norton J, Norton J, Manson N, Kesani A, Bednar D, Lundine K, Hartig D, Fichadi A, Fehlings M, Kim S, Harris S, Lin C, Gill J, Abraham E, Shamji M, Choi S, Goldstein C, Wang Z, McCabe M, Noonan V, Nadeau M, Ferrara S, Kelly A, Melnyk A, Arora D, Quateen A, Dea N, Ranganathan A, Zhang Y, Casha S, Rajamanickam K, Santos A, Santos A, Wilson J, Wilson J, Street J, Wilson J, Lewis R, Noonan V, Street J, El-Hawary R, Egge N, Lin C, Schouten R, Lin C, Kim A, Kwon B, Huang E, Hwang P, Allen K, Jing L, Mata B, Gabr M, Richardson W, Setton L, Karadimas S, Fehlings M, Fleming J, Bailey C, Gurr K, Bailey S, Siddiqi F, Lawendy A, Sanders D, Staudt M, Canacari E, Brown E, Robinson A, McGuire K, Chrysostoum C, Rampersaud YR, Dvorak M, Thomas K, Boyd M, Gurr K, Bailey S, Nadeau M, Fisher C, Batke J, Street J, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, Vaccaro A, Chapman J, Arnold P, Shaffrey C, Kopjar B, Snyder B, Wright J, Lewis S, Zeller R, El-Hawary R, Moroz P, Bacon S, Jarzem P, Hedden D, Howard J, Sturm P, Cahill P, Samdani A, Vitale M, Gabos P, Bodin N, d’Amato C, Harris C, Smith J, Parent E, Hill D, Hedden D, Moreau M, Mahood J, Lewis S, Bodrogi A, Abbas H, Goldstein S, Bronstein Y, Bacon S, Chua S, Magana S, Van Houwelingen A, Halpern E, Jhaveri S, Lewis S, Lim A, Leelapattana P, Fleming J, Siddiqqi F, Bailey S, Gurr K, Moon ES, Satkunendrarajah K, Fehlings M, Noonan V, Dvorak M, Bryan S, Aronyk K, Fox R, Nataraj A, Pugh J, Elliott R, McKeon M, Abraham E, Fleming J, Gurr K, Bailey S, Siddiqi F, Bailey C, Davis G, Rogers M, Staples M, Quan G, Batke J, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Shamji M, Hurlbert R, Jacobs W, Duplessis S, Casha S, Jha N, Hewson S, Massicotte E, Kopjar B, Mortaz S, Coyte P, Rampersaud Y, Rampersaud Y, Goldstein S, Andrew B, Modi H, Magana S, Lewis S, Roffey D, Miles I, Wai E, Manson N, Eastwood D, Elliot R, McKeon M, Bains I, Yong E, Sutherland G, Hurlbert R, Rampersaud Y, Chan V, Persaud O, Koshkin A, Brull R, Hassan N, Petis S, Kowalczuk M, Petrisor B, Drew B, Bhandari M, DiPaola C, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, McLachlin S, Bailey S, Gurr K, Bailey C, Dunning C, Fehlings M, Vaccaro A, Wing P, Itshayek E, Biering-Sorensen F, Dvorak M, McLachlin S, Bailey S, Gurr K, Dunning C, Bailey C, Bradi A, Pokrupa R, Batke J, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Kelly A, Wen T, Kingwell S, Chak J, Singh V, Cripton P, Fisher C, Dvorak M, Oxland T, Wali Z, Yen D, Alfllouse A, Alzahrani A, Jiang H, Mahood J, Kortbeek F, Fox R, Nataraj A, Street J, Boyd M, Paquette S, Kwon B, Batke J, Dvorak M, Fisher C, Reddy R, Rampersaud R, Hurlbert J, Yong W, Casha S, Zygun D, McGowan D, Bains I, Yong V, Hurlbert R, Mendis B, Chakraborty S, Nguyen T, Tsai E, Chen A, Atkins D, Noonan V, Drew B, Tsui D, Townson A, Dvorak M, Chen A, Atkins D, Noonan V, Drew B, Dvorak M, Craven C, Ford M, Ahn H, Drew B, Fehlings M, Kiss A, Vaccaro A, Harrop J, Grossman R, Frankowski R, Guest J, Dvorak M, Aarabi B, Fehlings M, Noonan V, Cheung A, Sun B, Dvorak M, Vaccaro A, Harrop J, Massicotte E, Dvorak M, Fisher C, Rampersaud R, Lewis S, Fehlings M, Marais L, Noonan V, Queyranne M, Fehlings M, Dvorak M, Atkins D, Hurlbert R, Fox R, Fourney D, Johnson M, Fehlings M, Ahn H, Ford M, Yee A, Finkelstein J, Tsai E, Bailey C, Drew B, Paquet J, Parent S, Christie S, Dvorak M, Noonan V, Cheung A, Sun B, Dvorak M, Sturm P, Cahill P, Samdani A, Vitale M, Gabos P, Bodin N, d’Amato C, Harris C, Smith J, Lange J, DiPaola C, Lapinsky A, Connolly P, Eck J, Rabin D, Zeller R, Lewis S, Lee R, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, DiPaola C, Street J, Bodrogi A, Goldstein S, Sofia M, Lewis S, Shin J, Tung K, Ahn H, Lee R, Batke J, Ghag R, Noonan V, Dvorak M, Goyal T, Littlewood J, Bains I, Cho R, Thomas K, Swamy G. Canadian Spine Society abstracts1.1.01 Supraspinal modulation of gait abnormalities associated with noncompressive radiculopathy may be mediated by altered neurotransmitter sensitivity1.1.02 Neuroprotective effects of the sodium-glutamate blocker riluzole in the setting of experimental chronic spondylotic myelopathy1.1.03 The effect of timing to decompression in cauda equina syndrome using a rat model1.2.04 Intraoperative waste in spine surgery: incidence, cost and effectiveness of an educational program1.2.05 Looking beyond the clinical box: the health services impact of surgical adverse events1.2.06 Brace versus no brace for the treatment of thoracolumbar burst fractures without neurologic injury: a multicentre prospective randomized controlled trial1.2.07 Adverse event rates in surgically treated spine injuries without neurologic deficit1.2.08 Functional and quality of life outcomes in geriatric patients with type II odontoid fracture: 1-year results from the AOSpine North America Multi-Center Prospective GOF Study1.3.09 National US practices in pediatric spinal fusion: in-hospital complications, length of stay, mortality, costs and BMP utilization1.3.10 Current trends in the surgical treatment of adolescent idiopathic scoliosis in Canada1.3.11 Sagittal spinopelvic parameters help predict the risk of proximal junctional kyphosis for children treated with posterior distraction-based implants1.4.12 Correlations between changes in surface topography and changes in radiograph measurements from before to 6 months after surgery in adolescents with idiopathic scoliosis1.4.13 High upper instrumented vertebra (UIV) sagittal angle is associated with UIV fracture in adult deformity corrections1.4.14 Correction of adult idiopathic scoliosis using intraoperative skeletal traction1.5.01 Cauda equina: using management protocols to reduce delays in diagnosis1.5.02 Predicting the need for tracheostomy in patients with acute traumatic spinal cord injury1.5.03 A novel animal model of cervical spondylotic myelopathy: an opportunity to identify new therapeutic targets1.5.04 A review of preference-based measures of health-related quality of life in spinal cord injury research1.5.05 Predicting postoperative neuropathic pain following surgery involving nerve root manipulation based on intraoperative electromyographic activity1.5.06 Detecting positional injuries in prone spinal surgery1.5.07 Percutaneous thoracolumbar stabilization for trauma: surgical morbidity, clinical outcomes and revision surgery1.5.08 Systemic inflammatory response syndrome in spinal cord injury patients: Does its presence at admission affect patient outcomes?2.1.15 One hundred years of spine surgery — a review of the evolution of our craft and practice in the spine surgical century [presentation]2.1.16 Prevalence of preoperative MRI findings of adjacent segment disc degeneration in patients undergoing anterior cervical discectomy and fusion2.1.17 Adverse event rates of surgically treated cervical spondylopathic myelopathy2.1.18 Morphometricand dynamic changes in the cervical spine following anterior cervical discectomy and fusion and cervical disc arthroplasty2.1.19 Is surgery for cervical spondylotic myelopathy cost-effective? A cost–utility analysis based on data from the AO Spine North American Prospective Multicentre CSM Study2.2.20 Cost–utility of lumbar decompression with or without fusion for patients with symptomatic degenerative lumbar spondylolisthesis (DLS)2.2.21 Minimally invasive surgery lumbar fusion for low-grade isthmic and degenerative spondylolisthesis: 2- to 5-year follow-up2.2.22 Results and complications of posterior-only reduction and fusion for high-grade spondylolisthesis2.3.23 Fusion versus no fusion in patients with central lumbar spinal stenosis and foraminal stenosis undergoing decompression surgery: comparison of outcomes at baseline and follow-up2.3.24 Two-year results of interspinous spacers (DIAM) as an alternative to arthrodesis for lumbar degenerative disorders2.3.25 Treatment of herniated lumbar disc by sequestrectomy or conventional discectomy2.4.26 No sustained benefit of continuous epidural analgesia for minimally invasive lumbar fusion: a randomized double-blinded placebo controlled study2.4.27 Evidence and current practice in the radiologic assessment of lumbar spine fusion2.4.28 Wiltse versus midline approach for decompression and fusion of the lumbar spine2.5.09 The effect of soft tissue restraints following type II odontoid fractures in the elderly — a biomechanical study2.5.10 Development of an international spinal cord injury (SCI) spinal column injury basic data set2.5.11 Evaluation of instrumentation techniques for a unilateral facet perch and fracture using a validated soft tissue injury model2.5.12 Decreasing neurologic consequences in patients with spinal infection: the testing of a novel diagnostic guideline2.5.13 Prospective analysis of adverse events in surgical treatment of degenerative spondylolisthesis2.5.14 Load transfer characteristics between posterior fusion devices and the lumbar spine under anterior shear loading: an in vitro investigation2.5.15 Preoperative predictive clinical and radiographic factors influencing functional outcome after lumbar discectomy2.5.16 A Thoracolumbar Injury Classification and Severity Score (TLICS) of 4: What should we really do?3.1.29 Adverse events in emergent oncologic spine surgery: a prospective analysis3.1.30 En-bloc resection of primary spinal and paraspinal tumours with critical vascular involvement3.1.31 The treatment impact of minocycline on quantitative MRI in acute spinal cord injury3.1.32 Benefit of minocycline in spinal cord injury — results of a double-blind randomized placebo-controlled study3.2.33 Improvement of magnetic resonance imaging correlation with unilateral motor or sensory deficits using diffusion tensor imaging3.2.34 Comparing care delivery for acute traumatic spinal cord injury in 2 Canadian centres: How do the processes of care differ?3.2.35 Improving access to early surgery: a comparison of 2 centres3.3.36 The effects of early surgical decompression on motor recovery after traumatic spinal cord injury: results of a Canadian multicentre study3.3.37 A clinical prediction model for long-term functional outcome after traumatic spinal cord injury based on acute clinical and imaging factors3.3.38 Effect of motor score on adverse events and quality of life in patients with traumatic spinal cord injury3.4.39 The impact of facet dislocation on neurologic recovery after cervical spinal cord injury: an analysis of data on 325 patients from the Surgical Trial in Acute Spinal Cord Injury Study (STASCIS)3.4.40 Toward a more precise understanding of the epidemiology of traumatic spinal cord injury in Canada3.4.41 Access to care (ACT) for traumatic SCI: a survey of acute Canadian spine centres3.4.42 Use of the Spine Adverse Events Severity (SAVES) instrument for traumatic spinal cord injury3.5.17 Does the type of distraction-based growing system for early onset scoliosis affect postoperative sagittal alignment?3.5.18 Comparison of radiation exposure during thoracolumbar fusion using fluoroscopic guidance versus anatomic placement of pedicle screws3.5.19 Skeletal traction for intraoperative reduction in adolescent idiopathic scoliosis3.5.20 Utility of intraoperative cone-beam computed tomography (O-ARM) and stereotactic navigation in acute spinal trauma surgery3.5.21 Use of a central compression rod to reduce thoracic level spinal osteotomies3.5.22 ICD-10 coding accuracy for spinal cord injured patients3.5.23 Feasibility of patient recruitment in acute SCI trials3.5.24 Treatment of adult degenerative scoliosis with DLIF approaches. Can J Surg 2012. [DOI: 10.1503/cjs.012212] [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: 11/01/2022] Open
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Sujata N, Arora D, Panigrahi BP, Hanjoora VM. A sequential compression mechanical pump to prevent hypotension during elective cesarean section under spinal anesthesia. Int J Obstet Anesth 2012; 21:140-5. [PMID: 22398360 DOI: 10.1016/j.ijoa.2012.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 01/14/2012] [Accepted: 01/24/2012] [Indexed: 11/18/2022]
Abstract
BACKGROUND Spinal anesthesia is a standard technique for cesarean section but can cause hypotension which may be related to venous pooling secondary to progesterone-induced decreases in vascular tone. This study investigated the use of a sequential compression mechanical pump with thigh-high sleeves with compression cycles timed to venous refilling. We hypothesized that this would recruit pooled venous blood from the lower limbs, maintain the central blood volume and thus decrease the incidence of hypotension. METHODS One hundred parturients scheduled for elective cesarean section under spinal anesthesia were recruited and randomly assigned to use of either a mechanical pump (Group M) or control (Group C). A standardized protocol for co-hydration and anesthesia was followed. Hypotension, defined as a decrease in systolic blood pressure by >20% from baseline, was treated with 6-mg boluses of intravenous ephedrine. The incidence of hypotension was defined as the primary outcome. Median ephedrine requirement was taken as a measure of the severity of hypotension. RESULTS Hypotension occurred in 12 of 47 (25.5%) patients in Group M compared to 27 of 45 (60%) in Group C (P=0.001). The median [range] ephedrine dose was greater in Group C (12 [0-24]mg) compared to Group M (0 [0-12]mg) (P<0.001). There was no difference between groups in the time to onset of hypotension. CONCLUSION The use of a sequential compression mechanical pump that detects venous refilling and cycles accordingly, reduced the incidence and severity of hypotension after spinal anesthesia for cesarean section.
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Affiliation(s)
- N Sujata
- Department of Anesthesia, Max Super Speciality Hospital, New Delhi, India.
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Mehta Y, Arora D, Vats M. Epidural analgesia in high risk cardiac surgical patients. HSR Proc Intensive Care Cardiovasc Anesth 2012; 4:11-4. [PMID: 23440670 PMCID: PMC3484927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cardiac surgery is associated with high morbidity and mortality in patients with renal, hepatic or pulmonary dysfunction, advanced age and morbid obesity. Thoracic epidural analgesia is associated with decreased morbidity in these patients. Thoracic epidural analgesia in cardiac surgery is associated with haemodynamic stability, decreased catecholamine response, good pulmonary function, early extubation and discharge from intensive care unit. It is an important component of fast tracking in cardiac surgery as well. Its use has significantly increased over the years and has been used as an adjuvant to general anaesthesia as well as the sole anaesthetic technique in selected groups of patients. Proper selection of patients for thoracic epidural analgesia is mandatory. Timing of epidural catheter insertion and removal should be judiciously selected. The risk of epidural hematoma secondary to anticoagulation or residual effects of antiplatelet drug that can be reduced by taking standard precautions. In conclusion thoracic epidural analgesia in high risk cardiac surgery might decrease pulmonary, cardiovascular or renal complications, provide excellent analgesia and allow early extubation.
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Bansal A, Arora D, Mehta Y. Fallacious fracture of clavicle after cardiac surgery. HSR Proc Intensive Care Cardiovasc Anesth 2012; 4:51-2. [PMID: 23441279 PMCID: PMC3484919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Affiliation(s)
- V Senadhi
- Johns Hopkins University/Sinai Hospital Program in Internal Medicine, Sinai Hospital, Baltimore 21209, Maryland, USA.
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Arora D, Veqar Z. Correlation between endurance of deep cervical flexors and lower scapular stabilisers in computer users with chronic neck pain. Br J Sports Med 2010. [DOI: 10.1136/bjsm.2010.078725.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Affiliation(s)
- Y Singh
- Reader (Department of Obstetrics and Gynecology) AFMC, Pune-40
| | - D Arora
- Senior Advisor (Obstetrics and Gynecology), Command Hospital (WC), Chandimandir
| | - Sps Kochar
- Consultant (Obstetrics and Gynecology), Command Hospital (CC), Lucknow
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Arora D, Sharma R. Comparative ligninolytic potential of Phlebia
species and their role in improvement of in vitro
digestibility of wheat straw. J Anim Feed Sci 2009. [DOI: 10.22358/jafs/66379/2009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Singh K, Arora D, Singh K, Singh S. Genesis of dihydropyrimidinone(psi) calcium channel blockers: recent progress in structure-activity relationships and other effects. Mini Rev Med Chem 2009; 9:95-106. [PMID: 19149663 DOI: 10.2174/138955709787001686] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the armamentarium of calcium channel blockers appropriately functionalized 3,4-dihydropyrimidin-2(1H)-ones have received considerable attention in recent past owing to their structural similarity with 1,4-dihydropyridine based drugs. In this review, we highlight detailed investigations in the calcium channel blocking and other activities of this category of compounds as well as trace their genesis from 1,4-dihydropyridine based drugs.
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Affiliation(s)
- K Singh
- Organic Synthesis Laboratory, Department of Applied Chemical Sciences & Technology, Guru Nanak Dev University, Amritsar - 143 005, India.
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Kakar P, Govil D, Gupta S, Srinivasan S, Mehta P, Malhotra A, Prakash O, Arora D, Das S, Govil P. Percutaneous dilatation tracheostomy in critically ill patients with documented coagulopathy. Crit Care 2008. [PMCID: PMC4088705 DOI: 10.1186/cc6555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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Kakar P, Govil D, Gupta S, Srinivasan S, Mehta P, Prakash O, Arora D, Das S, Govil P, Malhotra A, Tobin R, Bajaj P. Validation of APACHE IV in patients with severe acute pancreatitis. Crit Care 2008. [PMCID: PMC4088871 DOI: 10.1186/cc6721] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Arora D, Bhattacharyya TK, Kathpalia SK, Kochar S, Sandhu GS, Goyal BK. Management of Rh-isoimmunised Pregnancies : Our Experience. Med J Armed Forces India 2007; 63:7-11. [PMID: 27407927 DOI: 10.1016/s0377-1237(07)80096-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Accepted: 07/21/2006] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The aim of this study was to assess the role of middle cerebral artery peak systolic velocity (MCA-PSV), as measured by doppler ultrasound, in detecting foetal anaemia in Rh- isoimmunised pregnancies. Intra-uterine foetal blood transfusion was performed in such anaemic foetuses to tide over the crisis of foetal immaturity till considered fit for extra-uterine survival. METHODS Rh-isoimmunised pregnancies reporting to a tertiary institute from 2003 to 2005, were screened by doppler ultrasound to estimate MCA-PSV to detect foetal anaemia. If the foetus developed MCA-PSV of more than 1.5 multiple of median (MoM) for the gestational age, foetal blood sampling through cordocentesis was performed to confirm foetal anaemia, followed by intrauterine foetal blood transfusion to all anaemic foetuses at the same sitting. Neonatal outcome was evaluated by recording gestational age at the time of delivery, duration of gestational time gained and need for blood transfusion in the neonatal period. RESULTS A total of thirteen isoimmunised pregnancies were evaluated. Three pregnancies did not require in-utero foetal blood transfusion. Twenty-one intrauterine foetal blood transfusions were performed in the remaining ten patients. Five received blood transfusion in the neonatal period. Intra uterine foetal death occurred in one grossly hydropic foetus and favourable neonatal outcome was recorded in the rest. CONCLUSION The clinical outcome of these pregnancies justifies the use of doppler studies of MCA-PSV in detecting foetal anaemia and intra uterine foetal blood transfusion is the only hope of prolonging pregnancy and salvaging such foetuses.
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Affiliation(s)
- D Arora
- Reader, Maternal & Foetal Medicine Specialist, Armed Forces Medical College, Pune - 411040
| | | | - S K Kathpalia
- Senior Advisor (Obstetrics and Gynaecology), CH (Central Command), Lucknow
| | - Sps Kochar
- Associate Professor & Gynaecologic Oncologist, Armed Forces Medical College, Pune - 411040
| | - G S Sandhu
- Reader (Obstetrics and Gynaecology), Armed Forces Medical College, Pune - 411040
| | - B K Goyal
- Classified Specialist (Obstetrics and Gynaecology), AH R & R, Delhi Cantt
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Prakash S, Arora D, Prakash S, Bhartiya V, Singh R. A combination of fentanyl-midazolam-propofol provides better intubating conditions than fentanyl-lignocaine-propofol in the absence of neuromuscular blocking agents. Acta Anaesthesiol Scand 2006; 50:999-1004. [PMID: 16923097 DOI: 10.1111/j.1399-6576.2006.01093.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 12/01/2022]
Abstract
BACKGROUND The use of propofol and adjuvants such as opioids, benzodiazepines and local anaesthetic agents, may provide adequate conditions for tracheal intubation without the need for neuromuscular blocking agents. In this randomized, double-blind study, intubating conditions after induction of anaesthesia with propofol, midazolam and fentanyl were compared with those after propofol, lignocaine and fentanyl. METHODS In 80 ASA I/II adult patients undergoing elective gynaecological surgery, intubating conditions were compared after induction of anaesthesia with a fentanyl 2 microg/kg, midazolam 0.03 mg/kg, propofol 2.5 mg/kg combination (group FMP) vs. a fentanyl 2 microg/kg, lignocaine 1.5 mg/kg, propofol 2.5 mg/kg combination (group FLP). Intubating conditions were assessed using a qualitative scoring system. RESULTS Intubation was successful in all patients in group FMP and in 87.5% of patients in group FLP; (P= 0.021). Overall, intubating conditions were clinically acceptable in 77.5% and 55% of patients in group FMP and group FLP, respectively (P= 0.033). CONCLUSION We conclude that the fentanyl, midazolam, propofol combination more reliably provides acceptable conditions for intubation than the fentanyl, lignocaine, propofol combination. Intubation was successful in all patients receiving the fentanyl, midazolam, propofol combination.
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Affiliation(s)
- S Prakash
- Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College, Safdarjang Hospital, New Delhi, India.
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Mehta Y, Arora D, Sharma KK. Improved Needle Manoeuverability on Removal of Flange may help in Epidural Catheter Placement in an Obese Patient. Ann Card Anaesth 2006. [DOI: 10.4103/0971-9784.37903] [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: 04/03/2023] Open
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Tempe DK, Arora D, Tomar A, Virmani S, Kaur T, Datt V. Pulmonary Artery Catheter Placement in High-risk Coronary Artery Bypass Grafting : Should it be done Before or After Induction of Anaesthesia? Ann Card Anaesth 2006. [DOI: 10.4103/0971-9784.37910] [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: 04/03/2023] Open
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Katiyar CK, Arora D, Mehrotra R, Nandi AR, Dutta A, Jain AK. Management of chronic hepatitis B with New Livfit in end stage renal disease. Indian J Physiol Pharmacol 2005; 49:83-8. [PMID: 15881863] [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] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
New Livfit (NLF) is a standardized, poly-herbal formulation that has been found useful in the management of hepatitis. The aim of this placebo-controlled study was to evaluate its usefulness against hepatitis B virus in the patients of end stage renal disease (ESRD). Patients were regularly evaluated at 6, 12, 24 and 36 weeks of therapy. With 36 weeks of treatment of NLF, there was rapid clearing of HBV-DNA in a significant number of patients. Significant seroconversion of the other markers of hepatitis B and restoration of the raised levels of ALT and AST was observed. The study suggests the potential usefulness of NLF in the control of HBV infection in the patients of ESRD prior to renal transplant.
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Affiliation(s)
- C K Katiyar
- Ayurvedic Research Group, Dabur Research Foundation, Site IV, Sahibabad, Ghaziabad - 201 010
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Arora D, Bhatia DP, Prasad MA. Exact solutions of some urn models of relaxation in glassy dynamics. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 60:145-8. [PMID: 11969744 DOI: 10.1103/physreve.60.145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/1998] [Indexed: 11/07/2022]
Abstract
We consider two simple models, called "urn models," for a general N-ball, M-urn problem. These models find applications in the study of relaxation in glassy dynamics. We obtain exact analytical results in these two cases for the average relaxation time tau to reach the ground state. In model I we also obtain the functional dependence of tau for large N, and in model II we obtain an asymptotic (N-->infinity) dependence of tau as a function of the number of urns M.
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Affiliation(s)
- D Arora
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085 India.
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Murry AC, Gelaye S, Casey JM, Foutz TL, Kouakou B, Arora D. Type of milk consumed can influence plasma concentrations of fatty acids and minerals and body composition in infant and weanling pigs. J Nutr 1999; 129:132-8. [PMID: 9915889 DOI: 10.1093/jn/129.1.132] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 11/12/2022] Open
Abstract
Two experiments using 42 crossbred neonatal pigs to compare the effects of caprine and bovine milk on growth, apparent nutrient digestibility and body composition were conducted. At age 72 h, pigs were removed from their dams and randomly divided into two groups, housed separately in stainless steel metabolism cages and were fed a predetermined amount (300 mL/kg body weight) of pasteurized, nonfortified whole, caprine or bovine milk. Body composition was determined using dual energy X-ray absorptiometry (DXA). In Experiment 1, 22 intact male pigs were used for a 31-d experimental period. There was no significant (P > 0.05) dietary effect on growth, apparent nutrient digestibility or body composition. Significant differences (P < 0.05), however, were observed in plasma of C 8:0, C 10:0 and C 12:0 concentrations. In Experiment 2, 20 pigs (10 intact males and 10 females) were used in a 2 x 2 factorial experiment for 52 d. Pigs fed caprine milk had higher (P < 0.05) plasma concentrations of C10:0 and C12:0 as well as Na, Mg and Zn than those fed bovine milk. At Day 52, pigs fed caprine milk had less body fat (P < 0.001) and higher (P < 0.06) bone mineral density than those fed bovine milk. Drymatter, N and total mineral intake of male pigs was higher (P < 0.05) than female pigs. Also, male pigs had higher (P < 0.05) plasma concentrations of C12:0 than females. This study demonstrates that the type of milk consumed can influence plasma concentrations of fatty acids, minerals and body composition in pigs.
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Affiliation(s)
- A C Murry
- Department of Animal and Dairy Science, The University of Georgia, Athens, GA 30602, USA
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Abstract
A strategy is described for improved refolding and purification of recombinant human gamma interferon (rh-IFN gamma), which could warrant a higher yield and specific activity than reported previously. The optimal conditions of refolding are obtained by addition of a labilizing agent, L-arginine, in the refolding buffer. A 10-fold increase in the yield was observed with 0.5 M L-arginine, compared with renaturation in its absence. By varying renaturation parameters, the conditions that allow functional refolding of approximately 25-30% of the recombinant protein have been standardized. A simple process is also described for the purification of rh-IFN gamma. The purification involves a single-column chromatography on S-Sepharose, after refolding of rh-IFN gamma in arginine containing buffer. This procedure has consistently produced rh-IFN gamma having a purity of at least 97%, the rest being the aggregated form of gamma interferon. The purified protein is a dimer under non-denaturing conditions and has a specific activity of 2 x 10(8) IU mg-1 protein, as measured by viral cytopathic assay.
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Affiliation(s)
- D Arora
- Recombinant Gene Products Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
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Sharma S, Mitra S, Arora D, Pershad D, Singh H. A controlled study of the effect of balanced general anaesthesia on cognitive functions in hypertensives on propranolol. Indian J Med Res 1995; 102:77-86. [PMID: 8834818] [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: 02/02/2023] Open
Abstract
The aim of this study was to observe the effect of general anaesthesia (GA) on multiple dimensions of cognitive functioning in hypertensives on propranolol therapy (group A) in comparison to a control group (group B). Ten subjects in each group were administered a battery of six psychological cognitive tests pre- and post-intervention under GA. Both groups showed a significant decrement in memory scores on the 4th postoperative day which showed signs of recovery on seventh day (P < 0.05 for both groups). The group A patients were further compromised in one of the intelligence test scores (Standard progressive matrices) from the beginning (P < 0.05). Although this intergroup deficit persisted even on the 7th postoperative day (P < 0.05), no added effects of GA on this parameter was observed in group A (P > 0.05). In conclusion, GA induced transient memory deficit in both groups. This should be kept in mind while considering 'street fitness' following general anaesthesia.
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Affiliation(s)
- S Sharma
- Department of Anaesthesia, Postgraduate Institute of Medical Education & Research, Chandigarh
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Bhatia DP, Prasad MA, Arora D. Comment on "Pair and triple correlations in the A+B-->B diffusion-controlled reaction". Phys Rev Lett 1995; 75:586. [PMID: 10060062 DOI: 10.1103/physrevlett.75.586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Arora D, Bhatia DP, Prasad MA. Survival probability with random-force-dominated dynamics in the presence of traps. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1994; 49:5867-5870. [PMID: 9961918 DOI: 10.1103/physreve.49.5867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Arora D, Ross AC. Antibody response against tetanus toxoid is enhanced by lipopolysaccharide or tumor necrosis factor-alpha in vitamin A-sufficient and deficient rats. Am J Clin Nutr 1994; 59:922-8. [PMID: 8147339 DOI: 10.1093/ajcn/59.4.922] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Reduced antibody response to tetanus toxoid (TT) was previously demonstrated during vitamin A deficiency but the response to bacterial lipopolysaccharide (LPS) was normal. We addressed whether anti-TT IgG responses are enhanced in vitamin A-sufficient and deficient rats by immunization with LPS plus TT. Antibody responses in vitamin A-sufficient and deficient rats increased significantly after coimmunization (LPS + TT) compared with the response of rats immunized with TT alone. In additional studies, recombinant tumor necrosis factor-alpha (TNF-alpha) also significantly increased the anti-TT IgG concentrations. Because pretreatment with anti-TNF before coimmunization or immunization with TT alone markedly reduced the anti-TT IgG responses, we infer TNF to be a mediator of both the adjuvanticity of LPS and the unstimulated response to TT. In conclusion, vitamin A-deficient rats can be stimulated to respond to TT by coimmunization with LPS or by treatment with TNF.
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Affiliation(s)
- D Arora
- Department of Biochemistry, Medical College of Pennsylvania, Philadelphia
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