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Gupta N, Kumar A, Verma VK. Strategies adopted by gastric pathogen Helicobacter pylori for a mature biofilm formation: Antimicrobial peptides as a visionary treatment. Microbiol Res 2023; 273:127417. [PMID: 37267815 DOI: 10.1016/j.micres.2023.127417] [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: 03/13/2023] [Revised: 05/15/2023] [Accepted: 05/21/2023] [Indexed: 06/04/2023]
Abstract
Enormous efforts in recent past two decades to eradicate the pathogen that has been prevalent in half of the world's population have been problematic. The biofilm formed by Helicobacter pylori provides resistance towards innate immune cells, various combinatorial antibiotics, and human antimicrobial peptides, despite the fact that these all are potent enough to eradicate it in vitro. Biofilm provides the opportunity to secrete various virulence factors that strengthen the interaction between host and pathogen helping in evading the innate immune system and ultimately leading to persistence. To our knowledge, this review is the first of its kind to explain briefly the journey of H. pylori starting with the chemotaxis, the mechanism for selecting the site for colonization, the stress faced by the pathogen, and various adaptations to evade these stress conditions by forming biofilm and the morphological changes acquired by the pathogen in mature biofilm. Furthermore, we have explained the human GI tract antimicrobial peptides and the reason behind the failure of these AMPs, and how encapsulation of Pexiganan-A(MSI-78A) in a chitosan microsphere increases the efficiency of eradication.
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Affiliation(s)
- Nidhi Gupta
- Department of Microbiology, University of Delhi South Campus, Benito Juarez Marg, New Delhi 110021, India.
| | - Atul Kumar
- Department of Microbiology, University of Delhi South Campus, Benito Juarez Marg, New Delhi 110021, India
| | - Vijay Kumar Verma
- Department of Microbiology, University of Delhi South Campus, Benito Juarez Marg, New Delhi 110021, India.
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Rastogi T, Awasthi S, Khare R, Prasad M, Sami G, Verma VK. Erratum to "Perceptions and practices of COVID-19 protective measures among the general public of North India" [Clin Epidemiol Glob Health 13 (2022) 100927]. Clin Epidemiol Glob Health 2022; 17:101162. [PMID: 36267109 PMCID: PMC9556939 DOI: 10.1016/j.cegh.2022.101162] [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: 11/06/2022] Open
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Verma RK, Verma VK. What More to do to Make Online Teaching an Attractive and Effective Tool for Medical Students? An Experience from a Rural Tertiary Care Institute in Haryana State, India. J Coll Med Sci-Nepal 2022. [DOI: 10.3126/jcmsn.v18i2.45010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction: Though online teaching-learning methodology is not a new way of transferring knowledge and skill, however pandemic of COVID-19 has made it more relevant to all fields. Medical education is majorly dependent on patients and related resources. However, the current pandemic has pushed the medical fraternity to use online methods. Understanding the perception of end-users (medical students) may help get the best out of this methodology. Hence, we planned this study to know medical students' perception of the online teaching-learning methodology.
Methods: The present cross-sectional study was executed among the undergraduate medical students, from the first year to final year, of Bhagat Phool Singh, Government Medical College for Women, Khanpur Kalan, Sonepat of Haryana state, India. The data were collected through a semi-structured questionnaire sent to all students as a link to Google form. The study sample was selected through stratified random sampling. We assumed every batch of students as a stratum and randomly selected 25 students from each batch; hence, data analysis from 100 students was conducted.
Results: Most participants found the online teaching-learning methodology comfortable, time and money-saving. However, almost all of them refuted online methods for clinical or bedside teaching. Family distractions, internet connectivity, physical discomfort, isolated feeling, and poor interaction among peers were reported as barriers to online methods.
Conclusions:Selective use of online teaching-learning methodology with inbuilt peer interaction has enormous potential in medical education.
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Gupta N, Behera DK, Prajapati VK, Verma VK. A comprehensive approach to discover Toxin-Antitoxin systems from human pathogen Helicobacter pylori: A poison and its antidote encapsulated in the genome. Life Sci 2022; 288:120149. [PMID: 34843738 DOI: 10.1016/j.lfs.2021.120149] [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: 09/03/2021] [Revised: 11/03/2021] [Accepted: 11/10/2021] [Indexed: 11/28/2022]
Abstract
AIM An enormous presence and their identified role as stress managers, antibiotic resistance, persistence, and biofilm formation is the reason why the research on Toxin-Antitoxin (TA) loci is getting more and more emphasis. These set of genes consist of poison (Toxin) and its antidote (Antitoxin) expressing in an operon where the toxin inhibits the cellular process and antitoxin which can be a protein or non-coding RNA, rescues the toxin. Most recent progress in genomics and in silico studies have revealed new TA families, and types of TA on bacterial chromosome. However, there is almost no or very little is known about the TA in H. pylori. Therefore, this study aims to identify the TA genes in human pathogen using a comprehensive in silico approach. METHODOLOGY Here, we have collected the genome-wide data of TA in H. pylori 26695 using TASmania, a new TA database. Further, entire TA dataset was validated with several other databases available for TA, operon analysis and experimental data available. KEY FINDINGS The study revealed the presence of 80 putative TA genes in H. pylori and highlighted their similarity as well as uniqueness in comparison to other three known TA carrying human pathogens. SIGNIFICANCE The present study indicates the presence of a large number of TA genes in H. pylori which make biofilm and goes into persistence. Hence, our innovative approach unlocks the prospect for characterizing these putative TA genes and their role as stress managers.
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Affiliation(s)
- Nidhi Gupta
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan 305817, India.
| | - Deepak Kumar Behera
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan 305817, India
| | - Vijay Kumar Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan 305817, India
| | - Vijay Kumar Verma
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan 305817, India; Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India.
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Rastogi T, Awasthi S, Khare R, Prasad M, Sami G, Verma VK. Perceptions and practices of COVID-19 protective measures among the general public of North India. Clin Epidemiol Glob Health 2021; 13:100927. [PMID: 34926866 PMCID: PMC8668603 DOI: 10.1016/j.cegh.2021.100927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/19/2021] [Accepted: 12/07/2021] [Indexed: 12/16/2022] Open
Abstract
Background India has a high COVID-19 burden. The Indian government responded to the pandemic by mandating its population to adhere to certain Protective Measures (PMs). Compliance to these PMs depends on their acceptability and adaptability among the general public. Aims To explore the perceptions and practices of COVID-19 related PMs among the general public of North India. Methods Qualitative study in four administrative districts (Lucknow, Etawah, Patna and Darbhanga) of North India. Two urban and two rural districts were purposefully selected. Audio in-depth interviews (IDIs) were conducted with healthy caregivers of children (2–59 months). Data was managed using Atlast Ti and analyzed using conventional content analysis. Results From July–Sep 2020, 60 IDIs were conducted; 36.6% (22/60) were females and 26.6% (16/60) had below primary education. Respondents concurred that most people in their society flouted the recommended PMs. The reasons for poor/non-compliance with PMs were: perceived poor susceptibility to illness, perceived less severity of COVID-19 and low perceived benefits of complying with the PMs. Respondents opined that COVID-19 is less prevalent in rural areas and among the educated population. Most respondents were aware of the recommended PMs and opined that these must be followed, however subjective norms, social norms and behavioral intentions negatively impacted compliance. Conclusions Since there was poor community perception of susceptibility to COVID-19 as well as poor perceived severity, the community did not understand the benefits of adhering to the recommended PMs. Therefore, future health communication strategies must take these into account to increase the possibility of success.
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Affiliation(s)
- Tuhina Rastogi
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Shally Awasthi
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Ranjan Khare
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Mahesh Prasad
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Gulshan Sami
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Vijay Kumar Verma
- Department of Pediatrics, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
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Sharma P, Katewa S, Meel SK, Katewa V, Bishnoi A, Verma VK, Nair NP, Thiyagarajan V. Clinicoepidemiological Profile and Genetic Characterization of Circulating Rotavirus Strain among Children < 5 Years Hospitalized for Acute Gastroenteritis in Western Rajasthan, India. Indian J Pediatr 2021; 88:97-104. [PMID: 33555569 DOI: 10.1007/s12098-020-03628-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 12/16/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To determine the clinical and epidemiological profile and circulating strains of rotavirus among children less than 5 y of age hospitalized for diarrhea in a tertiary care center of western Rajasthan. METHOD Children < 5 y of age admitted for acute gastroenteritis were recruited in this hospital-based surveillance study. Detailed clinical history and sociodemographic information was collected for all enrolled children. Severity of the gastroenteritis was assessed using the 20-point Vesikari Clinical Severity Scoring System. Rotavirus positivity was tested in the stool samples collected from children by commercially available techniques and further molecular characterization done as per defined protocol. RESULTS Out of 1055 enrolled children, overall positivity rate of typable rotavirus was 18.95% (169/892). Among children who were less than 24 mo of age, positivity due to rotavirus diarrhea was maximum (24.4%). Distinct seasonality was observed as maximum cases of rotavirus diarrhea were detected in the months of December to February. Commonest G type was G3 (54%) followed by G1 (19%) while predominant P type was P[8] (77%) followed by P[4] (11%). G3P[8] (51.83%) was the commonest genotype observed in the study region. CONCLUSION The current study found positivity of rotavirus to be 18.95% among children aged 0-59 mo admitted due to acute gastroenteritis is a tertiary care setting in northern part of India. Emergence of newer predominant strains emphasizes the need of continued surveillance to determine the changing trends.
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Affiliation(s)
- Pramod Sharma
- Department of Pediatrics, Dr S N Medical College, Jodhpur, Rajasthan, 342003, India
| | - Suman Katewa
- Department of Obstetrics & Gynaecology, Dr S N Medical College, Jodhpur, Rajasthan, India
| | - Suresh Kumar Meel
- Department of Pediatrics, Dr S N Medical College, Jodhpur, Rajasthan, 342003, India
| | - Vikash Katewa
- Department of Pediatrics, Dr S N Medical College, Jodhpur, Rajasthan, 342003, India.
| | - Alka Bishnoi
- Department of Pediatrics, Dr S N Medical College, Jodhpur, Rajasthan, 342003, India
| | - Vijay Kumar Verma
- Department of Pediatrics, Dr S N Medical College, Jodhpur, Rajasthan, 342003, India
| | - Nayana P Nair
- The Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
| | - Varunkumar Thiyagarajan
- The Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
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Ojha R, Gupta N, Naik B, Singh S, Verma VK, Prusty D, Prajapati VK. High throughput and comprehensive approach to develop multiepitope vaccine against minacious COVID-19. Eur J Pharm Sci 2020; 151:105375. [PMID: 32417398 PMCID: PMC7224663 DOI: 10.1016/j.ejps.2020.105375] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/29/2020] [Accepted: 05/08/2020] [Indexed: 12/16/2022]
Abstract
The ongoing enigmatic COVID-19 outbreak, first reported from Wuhan, China, on last day of the year 2019, which has spread to 213 countries, territories/areas till 28th April 2020, threatens hundreds of thousands human souls. This devastating viral infection has stimulated the urgent development of viable vaccine against COVID-19 across the research institutes around the globe. The World Health Organization (WHO) has also confirmed that the recent pandemic is causing Public Health Emergency of International apprehension. Moreover, the earlier two pathogenic SARS-CoV and MERS-CoV and many others yet to be identified pose a universal menace. Here, in this piece of work, we have utilized an in silico structural biology and advanced immunoinformatic strategies to devise a multi-epitope subunit vaccine against ongoing COVID-19 infection. The engineered vaccine sequence is adjuvanted with ß-3 defensin and comprised of B-cell epitopes, HTL epitopes and CTL epitopes. This is very likely that the vaccine will be able to elicit the strong immune response. Further, specific binding of the engineered vaccine and immune cell receptor TLR3 was estimated by molecular interaction studies. Strong interaction in the binding groove as well as good docking scores affirmed the stringency of engineered vaccine. The interaction is stable with minimal deviation in root-mean square deviation and root-mean-square fluctuation was confirmed by the molecular dynamics simulation experiment. The immune-simulation by C-ImmSim server, which mimics the natural immune environment, yielded more potent immune response data of B-cells, Th cells, Tc cells and IgG for vaccine. The encouraging data obtained from the various in-silico works indicated this vaccine as an effective therapeutic against COVID-19.
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Affiliation(s)
- Rupal Ojha
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Nidhi Gupta
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Biswajit Naik
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Satyendra Singh
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Vijay Kumar Verma
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Dhaneswar Prusty
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India
| | - Vijay Kumar Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Kishangarh, 305817, Ajmer, Rajasthan, India.
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Singh S, Bhardwaj A, Verma VK. Remote sensing and GIS based analysis of temporal land use/land cover and water quality changes in Harike wetland ecosystem, Punjab, India. J Environ Manage 2020; 262:110355. [PMID: 32250824 DOI: 10.1016/j.jenvman.2020.110355] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 07/06/2018] [Revised: 02/24/2020] [Accepted: 02/24/2020] [Indexed: 06/11/2023]
Abstract
Wetlands help in maintaining ecological balance in an area, but are shrinking fast all over the world. A study was conducted on the Harike wetland in Punjab state of India to analyze temporal changes in land use/land cover (LULC), water spread area and water pollution by using RS and GIS techniques. The LULC map of Harike wetland ecosystem covering an area of 22213.91 ha was prepared through on-screen visual interpretation of multispectral Resourcesat 2 LISS-IV satellite data (2014 and 2018) having spatial resolution of 5.8 m. Area under agriculture, forest and built up increased and that under waste land, water bodies and wetland decreased during 2014-18. The rate of increase in agricultural land was quite high (18.87 ha/year) during 2006-2014, but reduced to 3.53 ha/year during 2014-2018. The built up land increased comparatively at low rates (0.87 and 0.90 ha/year). Areas under waste land, water bodies and wetland decreased at the rate of 4.32, 1.61 and 13.80 ha/year during 2006-2014 and 2.37, 0.34 and 1.71 ha/year during 2014-2018, respectively. The water spread area of Harike wetland which was 4073 ha and 4166 ha in year 2002 and 2006 reduced to 3918.98 ha and 3910.56 ha in the year 2014 and 2018, respectively. However, wetland ponded area shrinked at a rate of 30.37 ha/year during 2006-2014 and 2.11 ha/year during the period 2014-2018. The area under low and medium turbidity increased by 22.02% and 15.2%, respectively, but decreased by 49% under high turbidity during 2014-18. Wetland water was observed to be rich in macro and micronutrients. The pH, BOD and COD of wetland water increased by 0.51, 9.7 mg/l and 24 mg/l, respectively, during 2002-14 and by 0.03, 2.0 mg/l and 5.92 mg/l, respectively during 2014-18. Interaction between land use, water quality, water inflow, ground water and wetland area has also been studied. Intensive cultivation and declining groundwater levels in the area are negatively affecting the wetland. This necessitates regular monitoring of wetland structural components and water quality along with an urgent plan in place for conservation, rehabilitation and management of Harike wetland ecosystem in participatory mode.
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Affiliation(s)
- Sukhdeep Singh
- Department of Soil & Water Engineering, Punjab Agricultural University, Ludhiana, India.
| | - Anil Bhardwaj
- Department of Soil & Water Engineering, Punjab Agricultural University, Ludhiana, India.
| | - V K Verma
- Punjab Remote Sensing Centre, Punjab Agricultural University Ludhiana, India.
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Gupta N, Regar H, Verma VK, Prusty D, Mishra A, Prajapati VK. Receptor-ligand based molecular interaction to discover adjuvant for immune cell TLRs to develop next-generation vaccine. Int J Biol Macromol 2020; 152:535-545. [PMID: 32112848 DOI: 10.1016/j.ijbiomac.2020.02.297] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/11/2020] [Accepted: 02/25/2020] [Indexed: 12/11/2022]
Abstract
Human immune cell toll-like receptors (TLRs) provide a novel chance for the development of the vaccine adjuvant engaging TLR signaling. A library of peptides was developed and peptides structure was generated through homology modeling and refinement. Further, these peptides were subjected to receptor-ligand interaction study against human immune cell TLRs using Schrödinger-suite software. Here, we identified the most potent ligands for each human immune cell receptor and identified it as a potent adjuvant. This work portrays the ability of binding of different known protein adjuvants with human TLRs 1--10. The significance of the study deals with the identification of adjuvant (ligand) for human TLRs individually which assist in the development of the optimal highly immunogenic vaccine.
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Affiliation(s)
- Nidhi Gupta
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817 Ajmer, Rajasthan, India
| | - Hansa Regar
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817 Ajmer, Rajasthan, India
| | - Vijay Kumar Verma
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817 Ajmer, Rajasthan, India
| | - Dhaneswar Prusty
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817 Ajmer, Rajasthan, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan 342011, India
| | - Vijay Kumar Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, 305817 Ajmer, Rajasthan, India.
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Lin WY, Verma VK, Lee MY, Lin HC, Lai CS. Prediction of 30-Day Readmission for COPD Patients Using Accelerometer-Based Activity Monitoring. Sensors (Basel) 2019; 20:s20010217. [PMID: 31905995 PMCID: PMC6982816 DOI: 10.3390/s20010217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/27/2019] [Accepted: 12/27/2019] [Indexed: 01/03/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) claimed 3.0 million lives in 2016 and ranked 3rd among the top 10 global causes of death. Moreover, once diagnosed and discharged from the hospital, the 30-day readmission risk in COPD patients is found to be the highest among all chronic diseases. The existing diagnosis methods, such as Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2019, Body-mass index, airflow Obstruction, Dyspnea, and Exercise (BODE) index, modified Medical Research Council (mMRC), COPD assessment test (CAT), 6-minute walking distance, which are adopted currently by physicians cannot predict the potential readmission of COPD patients, especially within the 30 days after discharge from the hospital. In this paper, a statistical model was proposed to predict the readmission risk of COPD patients within 30-days by monitoring their physical activity (PA) in daily living with accelerometer-based wrist-worn wearable devices. This proposed model was based on our previously reported PA models for activity index (AI) and regularity index (RI) and it introduced a new parameter, quality of activity (QoA), which incorporates previously proposed parameters, such as AI and RI, with other activity-based indices to predict the readmission risk. Data were collected from continuous PA monitoring of 16 COPD patients after hospital discharge as test subjects and readmission prediction criteria were proposed, with a 63% sensitivity and a 37.78% positive prediction rate. Compared to other clinical assessment, diagnosis, and prevention methods, the proposed model showed significant improvement in predicting the 30-day readmission risk.
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Affiliation(s)
- Wen-Yen Lin
- Department of Electrical Engineering, Center for Biomedical Engineering, Chang Gung University, Tao-Yuan 33302, Taiwan;
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Tao-Yuan 33305, Taiwan;
- Correspondence: ; Tel.: +886-3-2118-800 (ext. 3675)
| | - Vijay Kumar Verma
- Department of Electrical Engineering, Center for Biomedical Engineering, Chang Gung University, Tao-Yuan 33302, Taiwan;
| | - Ming-Yih Lee
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Tao-Yuan 33305, Taiwan;
- Graduate Institute of Biomedical Engineering, Center for Biomedical Engineering, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Horng-Chyuan Lin
- Department of Thoracic Medicine, Chang Gung Memorial Hospital, Tao-Yuan 33305, Taiwan;
| | - Chao-Sung Lai
- Department of Electronic Engineering, Center for Biomedical Engineering, Chang Gung University, Tao-Yuan 33302, Taiwan;
- Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Tao-Yuan 33305, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei 24301, Taiwan
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Gupta N, Khatoon N, Mishra A, Verma VK, Prajapati VK. Structural vaccinology approach to investigate the virulent and secretory proteins of Bacillus anthracis for devising anthrax next-generation vaccine. J Biomol Struct Dyn 2019; 38:4895-4905. [DOI: 10.1080/07391102.2019.1688197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Nidhi Gupta
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan, India
| | - Nazia Khatoon
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, India
| | - Vijay Kumar Verma
- Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan, India
| | - Vijay Kumar Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer, Rajasthan, India
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Kumar B, Mishra M, Verma VK, Rai P, Kumar S. Organochlorines in urban soils from Central India: probabilistic health hazard and risk implications to human population. Environ Geochem Health 2018; 40:2465-2480. [PMID: 29681023 DOI: 10.1007/s10653-018-0112-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
This study presents distribution of organochlorines (OCs) including HCH, DDT and PCBs in urban soils, and their environmental and human health risk. Forty-eight soil samples were extracted using ultrasonication, cleaned with modified silica gel chromatography and analyzed by GC-ECD. The observed concentrations of ∑HCH, ∑DDT and ∑PCBs in soils ranged between < 0.01-2.54, 1.30-27.41 and < 0.01-62.8 µg kg-1, respectively, which were lower than the recommended soil quality guidelines. Human health risk was estimated following recommended guidelines. Lifetime average daily dose (LADD), non-cancer risk or hazard quotient (HQ) and incremental lifetime cancer risk (ILCR) for humans due to individual and total OCs were estimated and presented. Estimated LADD were lower than acceptable daily intake and reference dose. Human health risk estimates were lower than safe limit of non-cancer risk (HQ < 1.0) and the acceptable distribution range of ILCR (10-6-10-4). Therefore, this study concluded that present levels of OCs (HCH, DDT and PCBs) in studied soils were low, and subsequently posed low health risk to human population in the study area.
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Affiliation(s)
- Bhupander Kumar
- Central Pollution Control Board, East Arjun Nagar, New Delhi, 10032, India.
| | - Meenu Mishra
- Central Pollution Control Board, East Arjun Nagar, New Delhi, 10032, India
| | - V K Verma
- Central Pollution Control Board, East Arjun Nagar, New Delhi, 10032, India
| | - Premanjali Rai
- Central Pollution Control Board, East Arjun Nagar, New Delhi, 10032, India
| | - Sanjay Kumar
- Central Pollution Control Board, East Arjun Nagar, New Delhi, 10032, India
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Bhardwaj N, Verma VK, Chaturvedi V, Verma P. GH10 XynF1 and Xyn11A: the predominant xylanase identified in the profiling of extracellular proteome of Aspergillus oryzae LC1. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1378-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Appasani B, Pelluri R, Verma VK, Gupta N. A Crossover Improved Genetic Algorithm and Its Application in Non-Uniform Linear Antenna Arrays. Int J Comp Intel Appl 2017. [DOI: 10.1142/s1469026817500274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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
Genetic Algorithm (GA) is a widely used optimization technique with multitudinous applications. Improving the performance of the GA would further augment its functionality. This paper presents a Crossover Improved GA (CIGA) that emulates the motion of fireflies employed in the Firefly Algorithm (FA). By employing this mimicked crossover operation, the overall performance of the GA is greatly enhanced. The CIGA is tested on 14 benchmark functions conjointly with the other existing optimization techniques to establish its superiority. Finally, the CIGA is applied to the practical optimization problem of synthesizing non-uniform linear antenna arrays with low side lobe levels (SLL) and low beam width, both requirements being incompatible. However, the proposed CIGA applied for the synthesis of a 12 element array yields an SLL of [Formula: see text]29.2[Formula: see text]dB and a reduced beam width of 19.1[Formula: see text].
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Affiliation(s)
- Bhargav Appasani
- School of Electronics Engineering, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Rahul Pelluri
- Department of Electronics and Communication, Birla Institute of Technology, Ranchi, Jharkhand 835215, India
| | - Vijay Kumar Verma
- School of Electronics Engineering, KIIT University, Bhubaneswar, Odisha 751024, India
| | - Nisha Gupta
- Department of Electronics and Communication, Birla Institute of Technology, Ranchi, Jharkhand 835215, India
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Verma VK. Levels of activity identification & sleep duration detection with a wrist-worn accelerometer-based device. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2017:2369-2372. [PMID: 29060374 DOI: 10.1109/embc.2017.8037332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study, a model for identifying the levels of physical activity (PA) with a wrist-worn accelerometer-based device has been proposed. The levels of identified PA have been categorized into rest/sleep, sedentary, light, moderate, and vigorous activity states by analyzing the data collected from 10 normal subjects. An activity-based sleep duration detection algorithm has been proposed and implemented thereafter to further distinguish activities between short period of rest and sleep. The model and method proposed in this study could be further used to monitor subject's daily PA status and sleep quality assessment in the future for various home-based healthcare applications.
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Kushwah DS, Salman MT, Singh P, Verma VK, Ahmad A. Protective effects of ethanolic extract of Nigella sativa seed in paracetamol induced acute hepatotoxicity in vivo. Pak J Biol Sci 2015; 17:517-22. [PMID: 25911839 DOI: 10.3923/pjbs.2014.517.522] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Paracetamol overdose causes serious liver necrosis. Hepatoprotective activity of ethanolic extract of Nigella sativa in Paracetamol induced acute hepatotoxicity was investigated in rats. Fasted male Wistar rats were orally treated with Nigella sativa extract in graded doses for 5 days followed by Nigella sativa extract and paracetamol 3 g kg(-1) on 6 and 7th day. Circulatory liver markers and reduced glutathione (GSH) levels were estimated and histopathological study of liver performed. Paracetamol caused a significant increase in serum alkaline phosphatase, glutamic oxaloacetic transaminase, glutamic pyruvic transaminase and total Bilirubin and a significant decrease in GSH compared to control. Nigella sativa pretreatment significantly prevented the increase in liver enzymes and total bilirubin and decrease in GSH level as compared to paracetamol group. Liver histopathology showed marked reduction in sinusoidal dilatation, midzonal necrosis, portal triaditis and occasional apoptosis in Nigella sativa extract treated groups as compared to group receiving only paracetamol. Nigella sativa extract possesses hepatoprotective action against paracetamol induced acute hepatoxicity. Further research is needed to advocate its prophylactic use for drug induced hepatotoxicity.
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Saha KK, Verma VK, Menon AR. Disease of the internal mammary artery: rare or undiagnosed? Asian Cardiovasc Thorac Ann 2014; 22:1124. [PMID: 24887893 DOI: 10.1177/0218492313505102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Kamales Kumar Saha
- MGM New Bombay Hospital, Mumbai, India Cumballa Hill Hospital and Heart Institute, Mumbai, India
| | | | - Ajit R Menon
- Cumballa Hill Hospital and Heart Institute, Mumbai, India
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Chakraborty P, Sakthivel S, Kumar B, Kumar S, Mishra M, Verma VK, Gaur R. Spatial distribution of persistent organic pollutants in the surface water of River Brahmaputra and River Ganga in India. Rev Environ Health 2014; 29:45-8. [PMID: 24659603 DOI: 10.1515/reveh-2014-0014] [Citation(s) in RCA: 12] [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] [Received: 01/16/2014] [Accepted: 01/16/2014] [Indexed: 05/27/2023]
Abstract
Persistent organic pollutants (POPs) like organochlorine pesticides (OCPs), polychlorinated biphenyles (PCBs) and polyaromatic hydrocarbons (PAHs) are discharged in surface water by various point and nonpoint sources thereby degrading the functioning of the ecosystem and threatening human health. Chlorinated pesticides such as Hexachlorocyclohexane (HCHs) and Dichlorodiphenyltrichloroethane (DDTs) are effective pest control chemicals, used in agriculture and public health activities (malaria eradication, etc.) in India for the past several decades and are still in use. POPs can cause endocrine disruption and food chain biomagnification because of their lipophilicity and environmental persistence. This study aims to assess the environmental occurrence and spatial distribution of OCPs, PAHs and PCBs in the surface water of River Brahmaputra and Ganga ending at the of the Bay of Bengal.The order of organochlorine pesticides is as: heptachlor>HCHs>DDTs>dieldrin>aldrin>endosulfan. Diamond Harbour and Bakkhali were the two places with elevated level of all individual HCH isomers compared to all other sites. β-Endosulfan and α-Endosulfan were high at Dibrugarh than other sampling sites. This is due to the ongoing use of Endosulfan in the tea estates in Assam especially the estates close to the town of Dibrugarh. p,p'-DDT and o,p'-DDT levels indicate the fresh input of DDT in all the sampling sites. Heptachlor has been observed in 57% of the total samples reported in the present study.These reasons may attribute to high deposition of pesticides in the surface water of Ganga and Brahmaputra.In addition the catchments area of the Ganga River is surrounded by agricultural lands so a relatively higher residue of pesticides was prevalent. Σ27 PCBs varied from BDL to 142 (Avg±SD, 3.96±6.71) ng L-1. PCB-18, PCB-52 & PCB-44 showed the highest concentration levels for all the sampling sites. PCB-126 was observed in samples taken from sites close to the city limit of Kolkata and Assam which is an indication of higher toxic effect from this highly toxic congener. PCB-169 was prevalent in most of the sites. The total concentrations of PAHs varied from BDL to 31 (Avg±SD, 0.2±1.5) µg L-1. PAHs concentrations were very low as PAHs are particle bound compounds.
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Kaur S, Senthilkumar K, Verma VK, Kumar B, Kumar S, Katnoria JK, Sharma CS. Preliminary analysis of polycyclic aromatic hydrocarbons in air particles (PM10) in Amritsar, India: sources, apportionment, and possible risk implications to humans. Arch Environ Contam Toxicol 2013; 65:382-95. [PMID: 23695716 DOI: 10.1007/s00244-013-9912-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 04/30/2013] [Indexed: 05/26/2023]
Abstract
Preliminary analysis was performed to assess human health risks of exposure to 16 polycyclic aromatic hydrocarbons (PAHs) by way of inhalation by children and adults living in urban area of Amritsar, Punjab, India. In particular, the United States Environmental Protection Agency's (USEPA's) 16 priority PAH compounds were analyzed in air particulate matter (PM10) from different geographical locations by high-volume air sampler. Sum concentrations of PAHs (37-274 ng m(-3)) were comparable with those of other cities in India as well many cities on a global scale. Pyrene, naphthalene, acenaphthene, acenaphthylene, fluoranthene, fluorene, and dibenzo(a,h)anthracene accounted for >80% of ∑16PAH concentrations. Furthermore, the contribution of seven carcinogenic PAHs accounted for 12% of ∑16PAHs. The estimated carcinogenicity of PAHs in terms of benzo(a)pyrene toxic equivalency (BaPTEQ) was assessed and confirmed that dibenzo(a,h)anthracene was the dominant PAH contributor (88.7%) followed by benzo(a)pyrene (6.67%). Homolog pattern and diagnostic ratios of PAHs suggested that mixed pyrogenic sources--including biomass burning, coal combustion, and petrogenic sources, such as vehicular emissions--are dominant PAH sources in Amritsar. Health risk of adults and children by way of PAHs was assessed by estimating the lifetime average daily dose (LADD) and corresponding incremental lifetime cancer risk (ILCR) using USEPA guidelines. The assessed cancer risk (ILCR) was found to be within the acceptable range (10(-6)-10(-4)).
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Affiliation(s)
- Simerpreet Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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Maladkar M, Verma VK, Narsikar KA, Walinjkar RD, Patil WR, Saggu NJS, Kulkarni SP. Triple drug combination of telmisartan, amlodipine and hydrochlorothiazide in the treatment of essential hypertension. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojim.2012.22014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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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Kushwah DS, Kushwah B, Salman MT, Verma VK. Acceptability and safety profile of oral and sublingual misoprostol for uterine evacuation following early fetal demise. Indian J Pharmacol 2011; 43:306-10. [PMID: 21713096 PMCID: PMC3113384 DOI: 10.4103/0253-7613.81513] [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] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 01/19/2011] [Accepted: 02/23/2011] [Indexed: 11/24/2022] Open
Abstract
Background: It has been established that sublingual (SL) route of misoprostol has a great potential to be developed for medical abortion, but there is dearth of evidence to reveal satisfaction rate and safety profile among patients of oral and SL routes. Thus, this study was conducted to provide an insight into the acceptability and safety profile of the same. Materials and Methods: A randomized controlled trial was carried out by giving 200 mg mifepristone orally, followed by administration of 600 μg misoprostol orally to 50 women and sublingually to 50 women. The primary endpoints of study were measurements of acceptability and safety profile parameters (average blood loss, nausea, vomiting, diarrhea, hot flushes, fever) of both the groups. The secondary endpoints of the study were number of doses required for complete abortion, success rate and the induction to evacuation interval in both the groups. Results: SL route of administration was more acceptable than the oral route (P = 0.009). Average blood loss was higher in the oral group than in the SL group (P = 0.001). Amongst the side effects, 34% in the SL group and 52% in the oral group had nausea (P = 0.264), 22% in the SL group and 44% in the oral group had vomiting (P = 0.031), 48% in the SL group and 86% in the oral group had diarrhea (P < 0.05), hot flushes were presented by 24% in the SL group and 50% in the oral group (P < 0.05), fever was presented by 20% in the SL group and 44% in the oral group (P < 0.05), and the number of cases aborted with only one dose was higher (86%) in the SL group as compared to 63% in the oral group (P = 0.004). The evacuation (success) rates were 92% in the SL group and 84% in the oral group (P = 0.218) and the mean ± SD induction to evacuation intervals in the SL and oral groups were 5.6 ± 4.54 hours and 9.44 ± 5.61 hours, respectively (P = 0.0002). Conclusion: The SL route had fewer undesirable effects, was more satisfactory, required less number of doses and was more acceptable to the patient compared to the oral route.
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Verma VK, Tewari S, Rai JPN. Ion exchange during heavy metal bio-sorption from aqueous solution by dried biomass of macrophytes. Bioresour Technol 2008; 99:1932-8. [PMID: 17513104 DOI: 10.1016/j.biortech.2007.03.042] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Revised: 03/11/2007] [Accepted: 03/17/2007] [Indexed: 05/15/2023]
Abstract
In this study, potentials of oven dried biomass of Eichhornia crassipes, Valisneria spiralis and Pistia stratiotes, were examined in terms of their heavy metal (Cd, Ni, Zn, Cu, Cr and Pb) sorption capacity, from individual-metal and multi-metal aqueous solutions at pH 6.0+/-0.1 (a popular pH of industrial effluent). V. spiralis was the most and E. crassipes was the least efficient for removal of all the metals. Cd, Pb and Zn were efficiently removed by all the three biomass. Cd was removed up to 98% by V. spiralis. Sorption data for Cr, Ni and Cd fitted better to Langmuir isotherm equation, while, the sorption data for Pb, Zn and Cu fitted better to Freundlich isotherm equation. In general, the presence of other metal ions did not influence significantly the targeted metal sorption capacity of the test plant biomasses. Ion exchange was proven the main mechanism involved in bio-sorption and there was a strong ionic balance between adsorbed (H(+) and M(2+)) to the released ions (Na(+) and K(+)) to and from the biomass. No significant difference was observed in the metal exchanged amount, by doubling of metal concentration (15-30 mg/l) in the solution and employing individual-metal and multi-metal solutions.
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Affiliation(s)
- V K Verma
- Ecotechnology Laboratory, Department of Environmental Science, GB Pant University of Agriculture and Technology, Pantnagar 263 145, Uttaranchal, India
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Verma VK, Singh YP, Rai JPN. Biogas production from plant biomass used for phytoremediation of industrial wastes. Bioresour Technol 2007; 98:1664-9. [PMID: 16831546 DOI: 10.1016/j.biortech.2006.05.038] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Revised: 05/25/2006] [Accepted: 05/25/2006] [Indexed: 05/10/2023]
Abstract
In present study, potentials of water hyacinth (Eichhornia crassipes) and water chestnut (Trapa bispinnosa) employed for phytoremediation of toxic metal rich brass and electroplating industry effluent, were examined in terms of biogas generation. Inability of the plants to grow in undiluted effluent directed to select 20%, 40% and 60% effluent concentrations (with deionized water) for phytoremediation experiments. Slurry of both the plants used for phytoremediation produced significantly more biogas than that by the control plants grown in unpolluted water; the effect being more pronounced with plants used for phytoremediation of 20% effluent. Maximum cumulative production of biogas (2430c.c./100gdm of water hyacinth and 1940c.c./100gdm of water chest nut) and per cent methane content (63.82% for water hyacinth and 57.04% for water chestnut) was observed at 5mm particle size and 1:1 substrate/inoculum ratio, after twenty days incubation. Biogas production was quicker (maximum from 8-12days) in water hyacinth than in water chestnut (maximum from 12-16days). The qualitative and quantitative variations in biogas production were correlated with COD, C, N, C/N ratio and toxic metal contents of the slurry used.
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Affiliation(s)
- V K Verma
- Ecotechnology Laboratory, Department of Environmental Science, G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, India
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Verma VK, Ramesh V, Tewari S, Gupta RK, Sinha N, Pandey CM. Role of bilirubin, vitamin C and ceruloplasmin as antioxidants in coronary artery disease [CAD]. Indian J Clin Biochem 2005; 20:68-74. [PMID: 23105536 PMCID: PMC3453843 DOI: 10.1007/bf02867403] [Citation(s) in RCA: 6] [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] [Indexed: 02/02/2023]
Abstract
A study has been carried out on 250 CAD patients to see how the serum levels of three antioxidants i.e., Vitamin C, Bilirubin and Ceruloplasmin are related to the CAD risk factors and characteristics in these patients. The number of severe category CAD patients declined by 7-18% with increasing serum levels of the three antioxidants and, triple vessel disease declined by 14-20%. A decline of 39% in Myocardial Infarction (MI) occurred with increasing serum Ceruloplasmin. Serum Ceruloplasmin was significantly lower in the MI group compared to the non MI group CAD patients. There was a steady and a significant decline in the mean values of serum levels of cholesterol, Triglyceride, VLDL cholesterol along with BMI with increasing serum level. The study indicates that with increasing serum levels of the three antioxidants studied, the % MI along with % Triple vessel disease and severity of CAD goes down suggesting that the modifiable risk factors have to be suitably modified in order to maintain a reasonably high level of these antioxidants, as the risk factors are inversely related to the serum antioxidant levels.
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Affiliation(s)
- V K Verma
- Department of Pathology, Cardiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences [SGPGIMS], Raebareli Road, 226 014 Lucknow
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Verma VK, Anand V, Shivpuri RK. Scaling of multiplicity fluctuations in 800 GeV proton-nucleus interactions. Phys Rev C Nucl Phys 1994; 50:2963-2972. [PMID: 9969998 DOI: 10.1103/physrevc.50.2963] [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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Basu D, Verma VK, Malhotra S, Malhotra A. Sensation seeking scale: Indian adaptation. Indian J Psychiatry 1993; 35:155-8. [PMID: 21743627 PMCID: PMC2978484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Sensation seeking refers to a biologically based personality dimension defined as the need for varied, novel and complex sensations and experiences, and the willingness to take physical and social risks for the sake of such experiences. Although researched worldwide for nearly three decades now, there is to date no published Indian study utilizing the concept of sensation seeking. This paper describes adaptation of the Sensation Seeking Scale for the Indian population. After due modification of the scale, its reliability, internal consistency and discriminant validity were established Norms were developed for a defined segment of general population. This study may be seen as the beginning of research in India on the subject of sensation seeking.
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Affiliation(s)
- D Basu
- Debasish Basu, Department of Psychiatry, Postgraduate Institute of Medical Education & Research (IKJIMER), Chandigarh - 160 012
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Shivpuri RK, Verma VK. Erratum: Target dependence of intermittency and multifractality of multiplicity fluctuations in 800-GeV proton emulsion-nuclei interactions. Phys Rev D Part Fields 1993; 48:436. [PMID: 10016099 DOI: 10.1103/physrevd.48.436] [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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Shivpuri RK, Verma VK. Target dependence of intermittency and multifractality of multiplicity fluctuations in 800-GeV proton emulsion-nuclei interactions. Phys Rev D Part Fields 1993; 47:123-132. [PMID: 10015384 DOI: 10.1103/physrevd.47.123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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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Yadav RV, Kumar P, Indudhara R, Minz M, Verma VK. Postnephrectomy evaluation of living related donors. Transplant Proc 1988; 20:799. [PMID: 3055502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- R V Yadav
- Transplant Section, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Verma VK, Cockcroft DW, Dosman JA. Airway responsiveness to inhaled histamine in chronic obstructive airways disease. Chronic bronchitis vs emphysema. Chest 1988; 94:457-61. [PMID: 3409723 DOI: 10.1378/chest.94.3.457] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [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: 01/05/2023] Open
Abstract
Airway responsiveness to inhaled histamine was examined in two groups of carefully selected patients with nonasthmatic chronic obstructive airways disease (COAD). Twelve patients with chronic bronchitis and airflow obstruction but little emphysema and 13 with predominantly emphysema and airflow obstruction but little bronchitis were selected based on history, chest roentgenogram, and diffusing capacity for carbon monoxide (Dsb). Emphysema patients had less cough, less sputum, less chronic bronchitis, lower Dsb, and more radiographic evidence of vascular deficiency. There was no difference in anthropometric features, smoking history, atopic skin sensitivity, hemoglobin, blood eosinophilia, PaO2, PaCO2, ECG, lung volumes, or expiratory flow rates. The two groups had similar airway responsiveness to inhaled histamine; the geometric mean provocation concentrations producing a 20 percent FEV1 fall (PC20) was 0.56 mg/ml for the bronchitis patients and 0.28 mg/ml for the emphysema patients (p greater than 0.20). Regression of log histamine PC20 vs percent predicted FEV1 showed a high correlation in both groups (r = 0.73, p less than 0.01 in bronchitis and r = 0.79, p less than 0.001 in emphysema). The regression lines were almost identical. These data suggest that in COAD bronchial responsiveness to inhaled histamine is mainly due to the altered airway geometry, and that there is no difference in histamine responsiveness between patients with emphysematous COAD and nonemphysematous COAD with chronic bronchitis.
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Affiliation(s)
- V K Verma
- Department of Medicine, University Hospital, University of Saskatchewan, Saskatoon, Canada
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Singh NB, Srivastava A, Verma VK, Kumar A, Gupta SK. Mastomys natalensis: a new animal model for Mycobacterium ulcerans research. Indian J Exp Biol 1984; 22:393-4. [PMID: 6510972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Verma VK, Nagpal SC, Dang R. Prevention and control of drug abuse in the third world. Indian J Psychiatry 1984; 26:175-7. [PMID: 21965979 PMCID: PMC3012226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- V K Verma
- Professor & Head, Department of Psychiatry, Postgraduate Institute of Medical Education & Research, Chandigarh
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Pant KK, Verma VK, Mishra N, Singh N, Sinha JN, Bhargava KP. Effects of morphine and pethidine on coronary vascular resistance, blood pressure, and myocardial infarction-induced cardiac arrhythmias. Jpn Heart J 1983; 24:127-33. [PMID: 6854949 DOI: 10.1536/ihj.24.127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In the present study, the effects of morphine and pethidine on coronary vessel resistance (CPP), blood pressure (BP), and experimental myocardial infarction-induced cardiac arrhythmia were investigated. Both morphine and pethidine induced a fall in CPP and BP and inhibited the cardiac arrhythmia. The morphine effects on CPP and BP were largely blocked by mepyramine. The effects of pethidine, on the other hand, were not blocked by mepyramine, propranolol, or atropine. An interesting dose dependent inhibition of cardiac arrhythmia was observed with pethidine.
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Dubey M, Verma VK, Sharma M, Shanker K, Sinha JN, Bhargava KP, Kishor K. Derivatives of n-aryl-N-amino piperazines as potential cardiovascular agents. Pol J Pharmacol Pharm 1981; 33:349-57. [PMID: 7322947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
24 new substituted piperazino guanidines and 34 substituted benzylideno- or benzylamino-4-phenyl piperazines were synthesized and evaluated for their cardiovascular activity. Several compounds of the above two series exhibited vasopressor or vasodepressor activity without modifying the carotid occlusion (CO) and noradrenaline (NA) induced pressor responses.
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Dubey M, Verma VK, Shanker K, Sinha JN, Bhargava KP, Kishor K. Synthesis of some newer piperazinoquinazolones as cardiovascular agents. Pharmazie 1979; 34:18-20. [PMID: 432250 DOI: 10.1002/chin.197919284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Twenty nine new substituted 2-methyl-3-(gamma-piperazino-propiophenyl)-4-quinazolone hydrochlorides were synthesised by the Mannich reaction of substituted quinazolones with substituted piperazines and evaluated for their cardiovascular activity. Several compounds of the series exhibited marked and sustained hypotensive activity.
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Dubey M, Verma VK, Shanker K, Sinha JN, Bhargava KP, Kishor K. New indolic hypotensive agents. Pharmazie 1978; 33:640-1. [PMID: 724743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Seven substituted piperazino indoles were synthesized by the condensation of substituted piperazines with substituted indole-3-aldehyde, and evaluated for hypotensive activity. Only compound 2 exhibited promising hypotensive activity.
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Dubey M, Verma VK, Shanker K, Sinha JN, Bhargava KP, Kishor K. Synthesis of some newer imidazolines as cardiovascular agents. Pharmazie 1978; 33:268-9. [PMID: 674333 DOI: 10.1002/chin.197847183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Nigam P, Verma VK. Symptomatic Purpura following Tuberculin test (A case report). Indian J Dermatol Venereol 1972; 38:228-229. [PMID: 29144377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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39
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Verma VK. Multiple carcinoid tumour mimicking Crohn's disease: a case report. J Ir Med Assoc 1972; 65:412-3. [PMID: 5054484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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