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Elgabry G, Spencer L, Siddiqi H, Ojha S, Wandroo F. A Report of a Symptomatic Progressive Myeloma during Pregnancy and Postpartum Period from Asymptomatic State. Hematol Rep 2023; 15:305-311. [PMID: 37218823 DOI: 10.3390/hematolrep15020031] [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: 12/13/2022] [Revised: 03/10/2023] [Accepted: 04/04/2023] [Indexed: 05/24/2023] Open
Abstract
Multiple myeloma is a plasma cell malignancy that is most commonly observed in males in the sixth and seventh decade of life. The clinical scenario of multiple myeloma with concurrent pregnancy is considered to be very rare. We detail here the case of a young female with known IgG kappa multiple myeloma who was found to have a steady elevation of her IgG kappa paraprotein during pregnancy and symptomatic progression in the postpartum period. She delivered a healthy baby at 40 weeks gestation. We present a review of all reported cases of known multiple myeloma progressing during pregnancy and in the postpartum period, the treatments given, and their outcomes. The report also provides suggestions for diagnosis and management of myeloma during pregnancy in order to have an outcome of successful uncomplicated pregnancy with healthy offspring.
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Affiliation(s)
- Gehad Elgabry
- Department of Haematology, Sandwell and West Birmingham Hospitals NHS Trust, West Bromwich B71 4HJ, UK
| | - Lydia Spencer
- Department of Haematology, Sandwell and West Birmingham Hospitals NHS Trust, West Bromwich B71 4HJ, UK
| | - Hisam Siddiqi
- Department of Haematology, Sandwell and West Birmingham Hospitals NHS Trust, West Bromwich B71 4HJ, UK
| | - Soumya Ojha
- Department of Haematology, University Hospital Birmingham NHS Trust, Birmingham B15 2GW, UK
| | - Farooq Wandroo
- Department of Haematology, Sandwell and West Birmingham Hospitals NHS Trust, West Bromwich B71 4HJ, UK
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2
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Walker S, Ojha S, Mitchell EJ. Parents and healthcare professionals' attitudes to Kangaroo Care for preterm infants in the UK. Acta Paediatr 2023. [PMID: 37073107 DOI: 10.1111/apa.16795] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/01/2023] [Accepted: 04/18/2023] [Indexed: 04/20/2023]
Abstract
AIM To explore the attitudes of parents and healthcare professionals (HCPs), and facilitators and barrier to implementation of Kangaroo Care (KC) in the UK. METHODS Online cross-sectional survey; distributed via the British Association of Perinatal Medicine, Bliss (UK-based charity), social media. RESULTS Sixty HCPs responded. 37 (62%) were nurses/nurse practitioners. 57 (95%) regularly implement KC. The most important factor that supported KC implementation was the team's belief in benefits of KC. Increased workload, staff shortage, and fear about safely of KC in unwell infants were recognised as the challenges preventing implementation. 518 parents responded. 421 (81%) had a preterm baby within three years. 338 (80%) were familiar with KC. The main facilitator was the belief that their baby enjoyed it. Excess noise and crowding on the unit were the most frequently reported barriers. Lack of opportunity and limited staff support were the main reasons why they had been unable to practice KC. CONCLUSION We found that most HCPs and parents believe that KC is beneficial and would like to practice it. Lack of resources to enable effective implementation is the main barrier. Service development and implementation research is required to ensure that KC is delivered in all UK neonatal units.
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Affiliation(s)
- S Walker
- Academic Unit of Population and Lifespan Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - S Ojha
- Academic Unit of Population and Lifespan Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - E J Mitchell
- Nottingham Clinical Trials Unit, School of Medicine, University of Nottingham, Nottingham, UK
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Ryan MS, McIntyre J, Bramwell LD, Ojha S. Accidental lipid overdose in a preterm infant: A case report. J Neonatal Perinatal Med 2023; 16:577-586. [PMID: 37718874 DOI: 10.3233/npm-231221] [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] [Indexed: 09/19/2023]
Abstract
BACKGROUND Intravenous lipid emulsions (ILEs) provide essential fatty acids during parenteral nutrition (PN). Serious adverse events including death can occur from overdose. We report an accidental overdose in a preterm infant. METHOD On Day 2 of life, a 29-week gestational age (GA) twin was accidentally given 47.5 mL of Intralipid20% (≈3x daily amount) in 50-minutes. RESULTS No apparent clinical deterioration occurred, although blood samples were lipaemic. Outcomes at 2 years corrected GA were similar to that of his twin. Service changes were made to infusion packaging and administration to avoid similar errors. CONCLUSIONS Medication errors in neonates are unfortunately common. Published articles usually focus on poor outcomes, which can increase the distress for parents of children where errors have occurred. Publishing the full spectrum of outcomes instead allows parents and professionals to be aware of all possibilities and lessons learnt, even if serious harm was avoided.
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Affiliation(s)
- M S Ryan
- Centre for Perinatal Research, Lifespan and Population Health, School of Medicine, University of Nottingham, Nottingham, UK
| | - J McIntyre
- Neonatal Unit, Derby Children's Hospital, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK
| | | | - S Ojha
- Centre for Perinatal Research, Lifespan and Population Health, School of Medicine, University of Nottingham, Nottingham, UK
- Neonatal Unit, Derby Children's Hospital, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, UK
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Bhardwaj J, Vishnoi R, Salim A, Yadav S, Ojha S, Dwivedi U, Ashokan K, Kumar P, Sharma GD, Singhal R. Gamma Irradiation Induced Surface Plasmon Resonance of Cu Nanoparticles in Fullerene C
60. SURF INTERFACE ANAL 2022. [DOI: 10.1002/sia.7137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jyotsna Bhardwaj
- Department of Physics Malaviya National Institute of Technology Jaipur, JLN Marg, Malviya Nagar Jaipur India
| | - Ritu Vishnoi
- Department of Physics Malaviya National Institute of Technology Jaipur, JLN Marg, Malviya Nagar Jaipur India
| | - Amena Salim
- Department of Physics Malaviya National Institute of Technology Jaipur, JLN Marg, Malviya Nagar Jaipur India
| | - Shriniwas Yadav
- Materials Research Centre Malaviya National Institute of Technology Jaipur, JLN Marg, Malviya Nagar Jaipur India
| | - S. Ojha
- Inter University Accelerator Centre, Aruna Asaf Ali Marg New Delhi India
| | - Umesh Dwivedi
- Amity School of Applied Sciences Amity University Rajasthan Jaipur Rajasthan India
| | - K. Ashokan
- Inter University Accelerator Centre, Aruna Asaf Ali Marg New Delhi India
- Department of Physics & Centre for Interdisciplinary Research University of Petroleum and Energy Studies (UPES) Dehradun Uttarakhand India
| | - Pushpendra Kumar
- Department of Physics Manipal University Jaipur Jaipur Rajasthan India
| | - G. D. Sharma
- Department of Physics The LNM Institute of Information Technology Jaipur India
| | - Rahul Singhal
- Department of Physics Malaviya National Institute of Technology Jaipur, JLN Marg, Malviya Nagar Jaipur India
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Dhungana S, Koirala R, Ojha S, Thapa S. Resilience and its association with post-traumatic stress disorder, anxiety, and depression symptomatology in the aftermath of trauma: a cross-sectional study from Nepal. Eur Psychiatry 2022. [PMCID: PMC9567145 DOI: 10.1192/j.eurpsy.2022.1732] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Resilience is a multidimensional construct. Despite being quoted as protective against mental disorders, it remains largely unexplored in our context.
Objectives
We attempted to explore the role of resilience in the development of various psychiatric symptoms as depression, anxiety and post-traumatic stress disorder following trauma in clinical population in a psychiatry outpatient of a university hospital.
Methods
We interviewed one hundred patients who sought treatment in psychiatry outpatient in a university hospital in Kathmandu, Nepal. We collected sociodemographic and trauma related information using semi-structured interview format. Other instruments used were the World Health Organization Composite International Diagnostic Interview version 2.1 for trauma categorization, the Post-Traumatic Stress Disorder Checklist-Civilian version to measure the post-traumatic stress disorder symptoms, and the 25-item Hopkins Symptom Checklist-25 to assess the level of depression and anxiety symptoms. We used Nepali adapted resilience scale derived from the original Wagnild and Young Resilience scale to measure resilience. We explored the associations between resilience scores and the scores on depression, anxiety and posttraumatic stress disorder using bivariate and multivariate analysis.
Results
Resilience had negative correlations with depression, anxiety, and post-traumatic stress disorder symptoms after adjusting for other variables such as gender, marital status, employment status, socioeconomic status and trauma types which were observed to have significant association in the bivariate analysis.
Conclusions
There was inverse correlation between resilience scores and depression, anxiety, and post-traumatic stress symptoms. Resilience should be considered in studies involving trauma population.
Disclosure
No significant relationships.
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Chavan P, Bhat V, Ojha S, Poojary M, Sharma N. M167 Establishing biological reference ranges for select biochemical parameters in adult Indian population. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rossi G, Durek J, Ojha S, Schlüter OK. Fluorescence-based characterisation of selected edible insect species: Excitation emission matrix (EEM) and parallel factor (PARAFAC) analysis. Curr Res Food Sci 2021; 4:862-872. [PMID: 34917946 PMCID: PMC8646056 DOI: 10.1016/j.crfs.2021.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/08/2021] [Indexed: 12/01/2022] Open
Abstract
Fluorescence spectroscopy coupled with chemometric tools is a powerful analytical method, largely used for rapid food quality and safety evaluations. However, its potential has not yet been explored in the novel food sector. In the present study, excitation emission matrices (EEMs) of 15 insect powders produced by milling insects belonging to 5 Orthoptera species (Acheta domesticus, Gryllus assimilis, Gryllus bimaculatus, Locusta migratoria, Schistocerca gregaria) from 3 different origins were investigated. Parallel factor (PARAFAC) analysis performed on the overall averaged dataset was validated for five components, highlighting the presence of five different fluorescence peaks. The presence of these peaks was confirmed on each species, suggesting that fluorescence compounds of edible insects are the same in several species. PARAFAC analysis performed on the overall averaged dataset after alternatively adding the EEM recorded from one standard compound allowed to speculate that edible insects fluorescence raises from mixtures of: tryptophan + tyrosine (PARAFAC component-1), tryptophan + tyrosine + tocopherol (PARAFAC component-2), collagen + pyridoxine + pterins (PARAFAC component-3). This study suggests that fluorescence spectroscopy may represent a powerful method for investigating composition and quality of insect-based foods. Fluorescence landscape of edible insects comprises of 5 different peaks. Similar fluorescence compounds are present among several Orthoptera species. Fluorescence peaks of edible insects result from several chemical molecules. Fluorescence intensity of edible insects depends on their species and origin.
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Affiliation(s)
- G Rossi
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - J Durek
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - S Ojha
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - O K Schlüter
- Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany.,Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy
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8
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Ojha S, Ho G, Lim CXQ, Ng SB, Mel S. Acute Epstein-Barr virus associated haemophagocytosis in an Asian female: What is the diagnosis? Am J Hematol 2021; 96:1541-1547. [PMID: 34424576 DOI: 10.1002/ajh.26326] [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] [Received: 05/22/2021] [Revised: 08/11/2021] [Accepted: 08/17/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Soumya Ojha
- Sandwell and West Birmingham Hospitals NHS Trust Birmingham UK
| | - Guiyi Ho
- Department of Medicine National University Health System Singapore
| | - Cheryl X. Q. Lim
- Department of Haematology Oncology National University Cancer Institute Singapore, National University Health System Singapore
| | - Siok B. Ng
- Department of Pathology National University Health System Singapore
- Cancer Science Institute of Singapore, National University of Singapore
- Department of Pathology, Yong Loo Lin School of Medicine National University of Singapore Singapore
| | - Sanjay Mel
- Department of Haematology Oncology National University Cancer Institute Singapore, National University Health System Singapore
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Usman MB, Bhardwaj S, Roychoudhury S, Kumar D, Alexiou A, Kumar P, Ambasta RK, Prasher P, Shukla S, Upadhye V, Khan FA, Awasthi R, Shastri MD, Singh SK, Gupta G, Chellappan DK, Dua K, Jha SK, Ruokolainen J, Kesari KK, Ojha S, Jha NK. Immunotherapy for Alzheimer's Disease: Current Scenario and Future Perspectives. J Prev Alzheimers Dis 2021; 8:534-551. [PMID: 34585229 DOI: 10.14283/jpad.2021.52] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Alzheimer's disease (AD) is a global health concern owing to its complexity, which often poses a great challenge to the development of therapeutic approaches. No single theory has yet accounted for the various risk factors leading to the pathological and clinical manifestations of dementia-type AD. Therefore, treatment options targeting various molecules involved in the pathogenesis of the disease have been unsuccessful. However, the exploration of various immunotherapeutic avenues revitalizes hope after decades of disappointment. The hallmark of a good immunotherapeutic candidate is not only to remove amyloid plaques but also to slow cognitive decline. In line with this, both active and passive immunotherapy have shown success and limitations. Recent approval of aducanumab for the treatment of AD demonstrates how close passive immunotherapy is to being successful. However, several major bottlenecks still need to be resolved. This review outlines recent successes and challenges in the pursuit of an AD vaccine.
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Affiliation(s)
- M B Usman
- Dr. Niraj Kumar Jha, Assistant Professor, Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Knowledge Park III, Greater Noida, Uttar Pradesh-201310, India, ; , Tel: +91-7488019194, ORCID: https://orcid.org/0000-0001-9486-4069; Dr. Shreesh Ojha, Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, UAE University, PO Box - 17666, Al Ain, UAE, E-mail: , Tel: +971-3-7137524, ORCID: https://orcid.org/0000-0001-7801-2966
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Ojha S, Gupta AM, Nagaraju P, Poojary M, Ravatale A. Plateletpheresis donation through donor awareness, motivation, and recruitment drives: A unique concept and experience from a tertiary care oncology centre in India. Transfus Clin Biol 2021; 29:65-69. [PMID: 34302952 DOI: 10.1016/j.tracli.2021.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES The majority of blood donor motivational and awareness activities are directed toward whole blood donation and not much emphasis is given to the plateletpheresis. The study was designed to analyze the effectiveness of the unique concept of platelet drives (PD) to increase voluntary plateletpheresis donations. MATERIALS AND METHODS The study was a retrospective study conducted at a tertiary care oncology hospital-based blood transfusion services (BTS). RESULTS A total of 13 PDs were conducted from January 2016 to December 2020. A total of 559 potential donors came for the donor registration and 125 donors got deferred on medical history. A total of 434 donors gave their samples for the testing of plateletpheresis. The median age of potential male and female donors was 32 and 30 years respectively. A total of 58 males and two females have donated single donor platelets (14.3% vs. 7.4%, P=0.319). The median age of male and female donors was 36 and 42 years, respectively. In male donors, 48 had donated once, seven donated twice, two donated thrice and one donor donated four times. Out of two female donors, one donor donated twice and the other donor donated four times. The female donors were more committed to repeat donations (P=0.004). Since the start of PDs, the number of voluntary donations has increased considerably over the years. CONCLUSION PDs have helped in increasing the number of voluntary plateletpheresis donors. All the BTS must have the standard operating procedures in place for these kinds of awareness and motivational drives.
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Affiliation(s)
- S Ojha
- Department of Transfusion Medicine, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, 410210 Navi Mumbai, India.
| | - A M Gupta
- Department of Transfusion Medicine, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, 410210 Navi Mumbai, India.
| | - P Nagaraju
- Department of Transfusion Medicine, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, 410210 Navi Mumbai, India.
| | - M Poojary
- Department of Transfusion Medicine, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, 410210 Navi Mumbai, India.
| | - A Ravatale
- Department of Transfusion Medicine, Advanced Centre for Treatment Research and Education in Cancer, Tata Memorial Centre, Homi Bhabha National Institute, 410210 Navi Mumbai, India.
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11
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Gupta H, Singh J, Umapathy GR, Soni V, Ojha S, Kar S, Singh F. Signature of strong localization and crossover conduction processes in doped ZnO thin films: synergetic effect of doping fraction and dense electronic excitations. J Phys Condens Matter 2021; 33:315701. [PMID: 34132205 DOI: 10.1088/1361-648x/ac0208] [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] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
GaxZn1-xO thin films with varying Ga fraction within the solubility limit were irradiated with high-energy heavy ions to induce electronic excitations. The films show good transmittance in the visible region and a reduction of about 20% in transmittance was observed for irradiated films at higher ion fluences. The Urbach energy was estimated and showed an augmenting response upon increase in doping fraction and ion irradiation, this divulges an enhancement of localized states in the bandgap or disorder in the films. The evolution of such localized states plays a vital role in charge transport and thus the temperature dependent electrical conductivity of irradiated thin films was studied to elucidate the dominant conduction mechanisms. The detailed analysis unfolds that in the high-temperature regime (180 K <T< 300 K), the charge conduction was dominated by thermally activated band conduction followed by the nearest neighbor hopping (NNH) mechanism. Whereas in the lower temperature regime (25 K <T< 170 K), the conduction mechanism was governed by Mott-VRH (variable range hopping) followed by Efros-Shklovskii (ES)-VRH. A sudden and steep rise in resistivity below 30 K was observed for GZO films with higher doping fraction at higher ion fluence and proclaims the presence of strong localization of carriers.
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Affiliation(s)
- Himanshi Gupta
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Jitendra Singh
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - G R Umapathy
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Vijay Soni
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - S Ojha
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Soumen Kar
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Fouran Singh
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
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12
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Kumar A, Sharma R, Yadav S, Swami SK, Kumari R, Singh VN, Ojha S, Schneider JJ, Srivastava R, Sinha OP. A study on chemical exfoliation and structural and optical properties of two-dimensional layered titanium diselenide. Dalton Trans 2021; 50:3894-3903. [PMID: 33635300 DOI: 10.1039/d0dt03689g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanium diselenide (TiSe2) is the least studied member of the transition metal dichalcogenide family due to a lack of available synthesis methodology, controlled bandgap engineering, and rapid characterization of layers. In this paper, we report the chemical exfoliation of TiSe2 platelets synthesized by the chemical vapor transport route in ortho-dichlorobenzene (o-DCB) functionalized with oleylamine (OLA), for the first time to the best of our knowledge. It is found that the addition of OLA supports the formation of a stable dispersion of a large area of the TiSe2 sheets due to surface capping with the OLA molecules indicating the importance of the ligand in dispersion behavior. The X-ray diffraction pattern confirms the hexagonal structure of the TiSe2 platelets with the space group P3[combining macron]m1 while Raman spectroscopy reveals that two modes of vibration i.e. A1g and E2g exist with layered structures having dimensions in micrometers as confirmed by scanning electron microscopy. Fourier transform infrared spectroscopy confirms the successful functionalization of chemically exfoliated TiSe2 nanosheets. Field-emission scanning electron microscopy reveals that exfoliated TiSe2 has a thickness of 15-55 nm whereas high-resolution transmission electron microscopy indicates thicker sheets for ligand-free exfoliated TiSe2 which are crystalline. Atomic force microscopy confirms the formation of nanosheets. UV-Visible, photoluminescence, and time-resolved PL spectroscopy showed an enhanced effect and better average lifetime of excitation for the exfoliated sheets with OLA than those without OLA. The C-V studies reveal that with increasing scan rate, the corresponding current also increases. The present study offers the possibility of their utilization in optoelectronics, advanced low-power electronics, voltage-controlled oscillators, ultra-fast electronics, and electrochemical devices.
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Affiliation(s)
- Ashish Kumar
- CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, India.
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Om Prakash M, Raghavendra G, Ojha S, Panchal M. Characterization of porous activated carbon prepared from arhar stalks by single step chemical activation method. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.matpr.2020.05.370] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zhao YM, Ojha S, Burgess CM, Sun DW, Tiwari BK. Inactivation efficacy and mechanisms of plasma activated water on bacteria in planktonic state. J Appl Microbiol 2020; 129:1248-1260. [PMID: 32358824 DOI: 10.1111/jam.14677] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 07/06/2019] [Revised: 04/14/2020] [Accepted: 04/23/2020] [Indexed: 11/28/2022]
Abstract
AIMS The study aimed to investigate the inactivation efficacy and mechanisms of plasma activated water (PAW) on selected bacteria in planktonic state. METHODS AND RESULTS Plasma activated water was generated using an atmospheric cold plasma jet at 15, 22 and 30 kV for 5 min. Escherichia coli, Listeria innocua, Staphylococcus aureus, Aeromonas hydrophila, Pseudomonas fluorescens and Shewanella putrefaciens were selected as the representative bacterial species. Each bacterial suspension was inoculated into PAW immediately after generation, and the viable counts at different exposure times of 0·5, 1, 3, 5 and 24 h during 4°C storage were measured to determine the inactivation efficacy. Scanning electron microscopy images of the bacteria were conducted to examine the structural changes. Physicochemical properties of PAW, including pH, conductivity, oxidation reduction potential (ORP), and reactive species of H2 O2 , NO2 - and NO3 - were measured. The results demonstrated that inactivation efficacy was in positive correlation with voltage and exposure time. Gram-negative bacteria were more susceptible to PAW than Gram-positive bacteria. Morphology damage was observed for all the bacterial species. PAW was significantly acidified, conductivity and ORP were significantly increased, and reactive species were detectable after 48 h. CONCLUSIONS This study offered a better understanding of the inactivation mechanisms of PAW, and the inactivation efficacy can be affected by voltage, exposure time and bacterial species. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrated the potential usage of PAW as an alternative disinfectant.
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Affiliation(s)
- Y-M Zhao
- Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland.,Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - S Ojha
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland.,Quality and Safety of Food and Feed, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany
| | - C M Burgess
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - D-W Sun
- Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland
| | - B K Tiwari
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
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Kulriya PK, Singh VN, Agarwal DC, Ojha S, Avasthi DK. Localized Surface Plasmon Resonance Studies on Pd/C Nano-Composite System: Effect of Metal Concentration and Annealing Temperature. J Nanosci Nanotechnol 2020; 20:3859-3865. [PMID: 31748087 DOI: 10.1166/jnn.2020.17508] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effects of metal concentration and annealing temperature on the localized surface plasmon resonance (LSPR) properties of the Pd nanoparticles (NP) dispersed in carbon were investigated. The Pd/C nano-composite thin films with 7 to 39 atomic % concentration of metal content were deposited using the atom beam co-sputtering techniques and subjected to annealing at temperature varying from 300 °C to 600 °C. The UV-vis spectroscopy studies on as-prepared films displayed a Mie scattering profile, but not well-defined LSPR bands were observed for all the values of Pd concentration. This is attributed to the smaller size (3-4 nm) of Pd NPs and rough Pd/C interface, as confirmed from TEM studies. When samples were annealed at a temperature of 300 °C, three broad LSPR absorption bands in the visible region, along with a sharp peak at 210 nm, were observed and the effect of Pd concentration variation was insignificant on their position. The multiple LSPR bands were observed due to agglomeration NPs, which is consistent with earlier reports and is also observed in the TEM images. When annealing temperature was subsequently increased to 500 °C, a blue shift in the LSPR peak position with an increase in the Pd concentration was observed, which phenomena is attributed to the formation of bigger NPs with the formation of sharp NPs-interface at high temperature upon annealing. A monotonic increase in the magnitude and decrease in the FWHM with an increase in concentration suggested change in the dielectric function of sample due to the growth of NPs. This is further confirmed from XRD studies, where strain relaxation and grain growth were observed. The intensity of the SPR peak decreased with an increase in the annealing temperature. The LSPR peak disappeared on annealing at a temperature of 600 °C, suggesting the formation of continuous polycrystalline thin films of Pd. In summary, NPs size, metalmatrix interface, and concentration of metal play key roles in the tailoring the LSPR properties of the Pd.
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Affiliation(s)
- P K Kulriya
- Materials Science Group, Inter-University Accelerator Centre, New Delhi 110067, India
| | - V N Singh
- Council of Scientific and Industrial Research (CSIR)-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - D C Agarwal
- Sant Longowal Institute of Engineering and Technology, Sangrur, Longowal 148106, Punjab, India
| | - S Ojha
- Materials Science Group, Inter-University Accelerator Centre, New Delhi 110067, India
| | - D K Avasthi
- Amity Institute of Nanotechnology, Amity University, Noida 201313, India
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Mohanty P, Chowdhury S, Choudhary RJ, Gome A, Reddy VR, Umapathy GR, Ojha S, Carleschi E, Doyle BP, Prinsloo ARE, Sheppard CJ. Role of Ni substitution on structural, magnetic and electronic properties of epitaxial CoCr 2O 4 spinel thin films. Nanotechnology 2020; 31:285708. [PMID: 32213684 DOI: 10.1088/1361-6528/ab83b4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cubic spinel CoCr2O4 has recently attained attention due to its multiferroic properties. However, the Co site substitution effect on the structural and magnetic properties has rarely been studied in thin film form. In this work, the structural and magnetic properties of Co1-x Ni x Cr2O4 (x= 0, 0.5) epitaxial thin films deposited on MgAl2O4 (100) and MgO (100) substrates to manipulate the nature of strain in the films using pulsed laser deposition (PLD) technique are presented. The epitaxial nature of the films was manifested through x-ray diffraction (XRD), reciprocal space mapping (RSM) and Rutherford backscattering spectrometry (RBS) measurements. Raman measurements revealed a disappearance of characteristic A 1 g and F 2 g modes of the CoCr2O4 with increase in the Ni content. Atomic force microscopy (AFM) and field emission scanning electron microscopy (FE-SEM) studies show a modification of the surface morphology upon Ni substitution. Magnetic measurements disclose that the ferrimagnetic Curie temperature (T C) of the CoCr2O4 in thin film grown on MgAl2O4 (100) and MgO (100) substrates were found to be 100.6 ± 0.5 K and 93.8 ± 0.2 K, respectively. With Ni substitution the T C values were found to be enhanced to 104.5 ± 0.4 K for MgAl2O4 (100) and 108.5 ± 0.6 K for MgO (100) substrates. X-ray photoelectron spectroscopy (XPS) suggests Cr3+ oxidation states in the films, while Co ions are present in a mixed Co2+/Co3+ oxidation state. The substitution of Ni at Co site significantly modifies the line shape of the core level as well as the valence band. Ni ions are also found to be in a mixed 2+/3+ oxidation state. O 1s core level display asymmetry related to possible defects like oxygen vacancies in the films.
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Affiliation(s)
- P Mohanty
- Cr Research Group, Department of Physics, University of Johannesburg, Johannesburg, PO Box 524, Auckland Park, South Africa
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Maity G, Dubey S, El-Azab A, Singhal R, Ojha S, Kulriya PK, Dhar S, Som T, Kanjilal D, Patel SP. An assessment on crystallization phenomena of Si in Al/a-Si thin films via thermal annealing and ion irradiation. RSC Adv 2020; 10:4414-4426. [PMID: 35495262 PMCID: PMC9049056 DOI: 10.1039/c9ra08836a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/14/2020] [Indexed: 11/21/2022] Open
Abstract
In the present study, crystallization of amorphous-Si (a-Si) in Al/a-Si bilayer thin films under thermal annealing and ion irradiation has been investigated for future solar energy materials applications. In particular, the effect of thickness ratio (e.g. in Al : a-Si, the ratio of the Al and a-Si layer thickness) and temperature during irradiation on crystallization of the Si films has been explored for the first time. Two sets of samples with thickness ratio 1 : 1 (set-A: 50 nm Al/50 nm a-Si) and thickness ratio 1 : 3 (set-B: 50 nm Al/150 nm a-Si) have been prepared on thermally oxidized Si-substrates. In one experiment, thermal annealing of the as-prepared sample (of both the sets) has been done at different temperatures of 100 °C, 200 °C, 300 °C, 400 °C, and 500 °C. Significant crystallization was found to initiate at 200 °C with the help of thermal annealing, which increased further by increasing the temperature. In another experiment, ion irradiation on both sets of samples has been carried out at 100 °C and 200 °C using 100 MeV Ni7+ ions with fluences of 1 × 1012 ions per cm2, 5 × 1012 ions per cm2, 1 × 1013 ions per cm2, and 5 × 1013 ions per cm2. Significant crystallization of Si was observed at a remarkably low temperature of 100 °C under ion irradiation. The samples irradiated at 100 °C show better crystallization than the samples irradiated at 200 °C. The maximum crystallization of a-Si has been observed at a fluence of 1 × 1012 ions per cm2, which was found to decrease with increasing ion fluence at both temperatures (i.e. 100 °C & 200 °C). The crystallization of a-Si is found to be better for set-B samples as compared to set-A samples at all the fluences and irradiation temperatures. The present work is aimed at developing the understanding of the crystallization process, which may have significant advantages for designing crystalline layers at lower temperature using appropriate masks for irradiation at the desired location. The detailed mechanisms behind all the above observations are discussed in this paper.
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Affiliation(s)
- G Maity
- Department of Pure & Applied Physics, Guru Ghasidas Vishwavidyalaya (A Central University) Bilaspur-495009 India
| | - S Dubey
- Department of Physics, School of Engineering, University of Petroleum & Energy Studies Bidholi Dehradun-248007 India
| | - Anter El-Azab
- Material Science & Engineering, Purdue University West Lafayette IN-47906 USA
| | - R Singhal
- Department of Physics, Malaviya National Institute of Technology Jaipur-302017 India
| | - S Ojha
- Inter University Accelerator Centre Aruna Asaf Ali Marg New Delhi-110067 India
| | - P K Kulriya
- Inter University Accelerator Centre Aruna Asaf Ali Marg New Delhi-110067 India
| | - S Dhar
- Department of Physics, Shiv Nadar University Gautam Buddha Nagar-201314 India
| | - T Som
- Institute of Physics Sachivalaya Marg Bhubaneswar-751005 India
| | - D Kanjilal
- Inter University Accelerator Centre Aruna Asaf Ali Marg New Delhi-110067 India
| | - Shiv P Patel
- Department of Pure & Applied Physics, Guru Ghasidas Vishwavidyalaya (A Central University) Bilaspur-495009 India
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MESH Headings
- Adult
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Cesarean Section
- Compassionate Use Trials
- Cytarabine/administration & dosage
- Female
- Fetal Growth Retardation/chemically induced
- Fetal Growth Retardation/etiology
- Humans
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/chemically induced
- Infant, Premature, Diseases/etiology
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/physiopathology
- Mutation
- Pregnancy
- Pregnancy Complications, Neoplastic/drug therapy
- Pregnancy Complications, Neoplastic/genetics
- Pregnancy Outcome
- Pregnancy Trimester, First/drug effects
- Protein Kinase Inhibitors/administration & dosage
- Protein Kinase Inhibitors/adverse effects
- Protein Kinase Inhibitors/pharmacology
- Recurrence
- Staurosporine/administration & dosage
- Staurosporine/adverse effects
- Staurosporine/analogs & derivatives
- Staurosporine/pharmacology
- Tandem Repeat Sequences
- fms-Like Tyrosine Kinase 3/antagonists & inhibitors
- fms-Like Tyrosine Kinase 3/genetics
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Affiliation(s)
- Soumya Ojha
- College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Melissa G Ooi
- Department of Haematology Oncology, National University Hospital, Singapore, Singapore.
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Maity G, Ojha S, Dubey S, Kulriya PK, Sulania I, Dhar S, Som T, Kanjilal D, Patel SP. Crystallization of Ge in ion-irradiated amorphous-Ge/Au thin films. CrystEngComm 2020. [DOI: 10.1039/c9ce01584a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Herein, the structural, optical, and electrical properties of Au-induced crystallization in amorphous germanium (a-Ge) thin films are presented for future solar energy material applications.
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Affiliation(s)
- G. Maity
- Department of Pure and Applied Physics
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur 495009
- India
| | - S. Ojha
- Inter University Accelerator Centre
- New Delhi 110067
- India
| | - S. Dubey
- Department of Physics
- School of Engineering
- University of Petroleum and Energy Studies
- Dehradun-248007
- India
| | - P. K. Kulriya
- Inter University Accelerator Centre
- New Delhi 110067
- India
| | - I. Sulania
- Inter University Accelerator Centre
- New Delhi 110067
- India
| | - S. Dhar
- Department of Physics
- Shiv Nadar University
- Nagar-201314
- India
| | - T. Som
- Institute of Physics
- Bhubaneswar-751005
- India
| | - D. Kanjilal
- Inter University Accelerator Centre
- New Delhi 110067
- India
| | - Shiv P. Patel
- Department of Pure and Applied Physics
- Guru Ghasidas Vishwavidyalaya (A Central University)
- Bilaspur 495009
- India
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Raj V, Ojha S, Howarth FC, Belur PD, Subramanya SB. Therapeutic potential of benfotiamine and its molecular targets. Eur Rev Med Pharmacol Sci 2019; 22:3261-3273. [PMID: 29863274 DOI: 10.26355/eurrev_201805_15089] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The water-soluble vitamin, thiamine forms an important part of the diet because of its role in the energy metabolism. The protective effects of thiamine against diabetic vascular complications have been well documented. However, slower absorption and reduced bioavailability is a major limiting factor for its clinical use. To overcome this issue, lipid-soluble derivatives of thiamine (allithiamines) was developed. Among the many synthetic lipophilic derivatives of thiamine, benfotiamine (BFT) is regarded as the first choice based on its safety and clinical efficacy data. BFT facilitates the action of thiamine diphosphate, a cofactor for the enzyme transketolase. The activation of transketolase enzyme accelerates the precursors of advanced glycation end products (AGEs) towards the pentose phosphate pathway thereby reducing the production of AGEs. The reduction in AGEs subsequently decreases metabolic stress which benefits vascular complications seen in diabetes. The effects of BFT on the AGE-dependent pathway is well established. However, several studies have shown that BFT also modulates pathways other than AGE such as arachidonic acid (AA), nuclear transcription Factor κB (NF-κβ), protein kinase B, mitogen-activated protein kinases (MAPK) and vascular endothelial growth factor receptor 2 (VEGFR2) signaling pathways. In the present review, we have comprehensively reviewed all the molecular targets modulated by BFT to provide mechanistic perspective to highlight its pleiotropic effects.
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Affiliation(s)
- V Raj
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
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Pattanaik JK, Kumar P, Kisku PC, Ojha S, Gargari S, Joshi R, Chopra S. Use of suitable metal matrix for ion current enhancement during 10Be AMS measurement at IUAC, New Delhi. PINSA 2019. [DOI: 10.16943/ptinsa/2019/49677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Banerjee TK, Saha M, Ghosh E, Hazra A, Das A, Choudhury D, Ojha S, Haldar A, Mukherjee A, Nandi SS, Ghosh A, Mukherjee A, Chatterjee A, Datta A, Purakayastha S. Conversion of clinically isolated syndrome to multiple sclerosis: a prospective multi-center study in Eastern India. Mult Scler J Exp Transl Clin 2019; 5:2055217319849721. [PMID: 31236283 PMCID: PMC6572895 DOI: 10.1177/2055217319849721] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 04/05/2019] [Accepted: 04/16/2019] [Indexed: 11/17/2022] Open
Abstract
Background In White populations more than 60% of clinically isolated syndrome (CIS) convert to multiple sclerosis (MS) on a long-term follow-up; several predictors for conversion have been identified. Objective This study aimed to determine the conversion rate and the predictors of conversion from CIS to MS (McDonald 2010) among Indians. The other objective was to evaluate the diagnostic accuracy of the new McDonald 2017 criteria in prediction of a second clinical attack. Methods Clinical and demographic data of CIS cohorts were collected. Baseline investigations included cerebrospinal magnetic resonance imaging (MRI) with contrast and cerebrospinal fluid (CSF) testing for oligoclonal band (OCB). Follow-up clinical and MRI examinations were performed annually for at least 24 months. Results Of the 82 subjects (age range 15-58 years), 36 (43.9%) converted to MS; 31/82 (37.8%) converted in 24 months. The predictors for conversion were earlier age of onset, CSF-OCB, cerebral MRI T2 lesion count, and periventricular and juxtacortical location of lesions. Twenty-two (26.83%) CIS fulfilled the McDonald MS 2017 criteria at baseline. Conclusion In this first prospective study of CIS in India, the risk factors for conversion are similar but the conversion rate to MS is lower than that in the western nations.
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Affiliation(s)
- T K Banerjee
- National Neurosciences Centre Calcutta, Kolkata, India
| | - M Saha
- Apollo Gleneagles Hospital, Kolkata, India
| | - E Ghosh
- National Neurosciences Centre Calcutta, Kolkata, India
| | - A Hazra
- Institute of Postgraduate Medical Education & Research, Kolkata, India
| | - A Das
- National Neurosciences Centre Calcutta, Kolkata, India
| | - D Choudhury
- National Neurosciences Centre Calcutta, Kolkata, India
| | - S Ojha
- National Neurosciences Centre Calcutta, Kolkata, India
| | | | - A Mukherjee
- Vivekananda Institute of Medical Sciences, Kolkata, India
| | - S S Nandi
- Calcutta Medical Research Institute, Kolkata, India
| | - A Ghosh
- Apollo Gleneagles Hospital, Kolkata, India
| | - A Mukherjee
- Calcutta Medical Research Institute, Kolkata, India
| | - A Chatterjee
- Calcutta Medical Research Institute, Kolkata, India
| | - A Datta
- Institute of Neuroscience Kolkata, Kolkata, India
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Lepp D, Ojha S, Mehdizadeh Gohari I, Chakravarty B, Prescott JF, Gong J. Immunization with subunits of a novel pilus produced by virulent Clostridium perfringens strains confers partial protection against necrotic enteritis in chickens. Vet Microbiol 2019; 230:7-13. [PMID: 30827407 DOI: 10.1016/j.vetmic.2019.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 04/27/2018] [Revised: 01/05/2019] [Accepted: 01/06/2019] [Indexed: 11/30/2022]
Abstract
Necrotic enteritis (NE) is an economically important disease of broiler chickens that is caused primarily by Clostridium perfringens strains that produce the NetB toxin. It is controlled in North America principally through the application of in-feed antimicrobials, but alternative control methods, such as vaccination, are urgently needed. We previously identified a cluster of C. perfringens genes prevalent in disease-causing strains, denominated VR-10B, that is predicted to encode a pilus. The current study evaluated the ability of three predicted pilin structural subunits (CnaA, FimA, FimB) to protect against NE in two immunization studies. In the first study, young broiler chickens were immunized twice intramuscularly (i.m.) with CnaA or FimA, which resulted in only a weak serum antibody response, and no reduction in the severity of intestinal lesions following experimental challenge with C. perfringens strain CP1. In the second study, chickens were injected subcutaneously (s.c.) with CnaA, FimB, or a combination of all three proteins, on days 7, 14 and 19, which resulted in a marked antibody response specific to each antigen. Chickens immunized with either CnaA or FimB had significantly reduced NE lesion severity, whereas immunization with all three proteins in combination did not provide protection. Western blot experiments using serum from immunized birds were also performed, providing the first experimental evidence to suggest that this locus may in fact encode a functional pilus structure.
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Affiliation(s)
- D Lepp
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada
| | - S Ojha
- Department of Pathobiology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - I Mehdizadeh Gohari
- Department of Pathobiology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - B Chakravarty
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada
| | - J F Prescott
- Department of Pathobiology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - J Gong
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada.
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Van Impe J, Smet C, Tiwari B, Greiner R, Ojha S, Stulić V, Vukušić T, Režek Jambrak A. State of the art of nonthermal and thermal processing for inactivation of micro-organisms. J Appl Microbiol 2018; 125:16-35. [DOI: 10.1111/jam.13751] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 02/16/2018] [Accepted: 02/27/2018] [Indexed: 02/03/2023]
Affiliation(s)
- J. Van Impe
- Department of Chemical Engineering; KU Leuven; Leuven Belgium
| | - C. Smet
- Department of Chemical Engineering; KU Leuven; Leuven Belgium
| | - B. Tiwari
- Department of Food Biosciences; Teagasc - Irish Agriculture and Food Development Authority; Carlow Ireland
| | - R. Greiner
- Department of Food Technology and Bioprocess Engineering; Max Rubner-Institut; Karlsruhe Germany
| | - S. Ojha
- Department of Food Biosciences; Teagasc - Irish Agriculture and Food Development Authority; Carlow Ireland
| | - V. Stulić
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
| | - T. Vukušić
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
| | - A. Režek Jambrak
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
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Banerjee T, Das A, Ghosh E, Saha M, Dasgupta S, Chowdhury D, Ojha S, Nandi S, Haldar A, Datta A, Purakayastha S. Clinical profile and outcome of optic neuritis in the City of Kolkata, India. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ojha S, Azimullah S, Al Taee H, Meeran MFN. Cardioprotective effect of (-)-α-Bisabolol in animal model of myocardial infarction. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608133] [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: 10/18/2022]
Affiliation(s)
- S Ojha
- College of Medicine and Health Sciences, United Arab Emirates University, AL AIN, United Arab Emirates
| | - S Azimullah
- College of Medicine and Health Sciences, United Arab Emirates University, AL AIN, United Arab Emirates
| | - H Al Taee
- College of Medicine and Health Sciences, United Arab Emirates University, AL AIN, United Arab Emirates
| | - MFN Meeran
- College of Medicine and Health Sciences, United Arab Emirates University, AL AIN, United Arab Emirates
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Ojha S, Deep S, Kundu S. Plant derived antimicrobial peptide Ib-AMP1 as a potential alternative drug candidate for Staphylococcus aureus toxins. ACTA ACUST UNITED AC 2017; 63:52-55. [PMID: 28968210 DOI: 10.14715/cmb/2017.63.6.11] [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: 08/20/2017] [Indexed: 11/18/2022]
Abstract
Due to an increase in the occurrence of multi drug resistant microorganisms a need for the development of alternative drugs comes in light. This alternative drug should be such that the microorganisms should not be able to develop resistance against them easily. Antimicrobial peptides are the most potential candidates to be developed as alternative drug. In the present study the three toxins ETA, ETB and PVL of Staphylococcus aureus were docked with four antimicrobial peptides, Ib-AMP1, JCPep7, Snakin2, Sesquin, derived from plants. The docking studies predict that Ib-AMP1 shows significant interactions with all these three toxins. Hence, further studies can be carried out for developing Ib-AMP1 as an alternative drug against the toxins of Staphylococcus aureus.
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Affiliation(s)
- S Ojha
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, India
| | - S Deep
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, India
| | - S Kundu
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, India
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Deep S, Ojha S, Kundu S. Efficacy and Stability studies of microbial folate fortified fruit juices prepared using probiotic microorganism. ACTA ACUST UNITED AC 2017; 63:44-48. [PMID: 28968208 DOI: 10.14715/cmb/2017.63.6.9] [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: 08/20/2017] [Indexed: 11/18/2022]
Abstract
Folate, natural form of water soluble vitamin folic acid, is significant for humans as involved in most important metabolic reactions i.e. nucleotide synthesis and amino acid inter conversions. Thus its deficiency causes neural tube defects in newborns and cardiovascular diseases, and cancers. Humans cannot synthesize folate de novo so consumption through diet is essential. Natural food sources, supplements and fortified food products are the choices available to complete the Daily recommended intake. However microbial fortification using probiotics recently gained wide attention due to dual advantage of natural food matrix with enhanced folate content along with the probiotics benefits. Current study was focused on the microbial fortification of fruit juices and their efficacy and stability studies. Freshly filtered orange and tomato juice was prepared and inoculated with Streptococcus thermophilus NCIM 2904. Incubation was done at 40°C and samples were collected at different time interval. Folate extraction was done using human plasma and content was measured by microbiological assay using Lactobacillus casei NCIM No. 2364. Efficacy and stability studies were carried out to ensure the quality of juices to be consumed in terms of folate content, viable cell count and pH after 4 weeks of storage at low temperature. Positive results were observed as folate content was quite stable whereas viable cell count was also found to be significant till some time without adding any preservatives. The results indicated that fortified fruit juices could be used as probiotic beverages with enhanced folate content.
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Affiliation(s)
- S Deep
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
| | - S Ojha
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
| | - S Kundu
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
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Ojha S, Balaji V, Sadek B, Rajesh M. Beneficial effects of phytochemicals in diabetic retinopathy: experimental and clinical evidence. Eur Rev Med Pharmacol Sci 2017; 21:2769-2783. [PMID: 28678306] [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
Diabetic retinopathy (DR) is a microvascular complication of diabetes mellitus and a major preventable cause of blindness. Strict control of blood glucose, blood pressure, and lipid profiles are the pivotal criteria to reduce the risk of developing DR. Although timely intervention with laser photocoagulation therapy could mitigate the progression of DR, it may not significantly improve visual acuity. Therefore, invasive surgical interventions such as vitrectomy are sometimes the only option to treat or manage advanced stages of DR. However, the risk of intra-ocular infections outweighs the benefits of the surgery. Newer therapies such as intraocular injection of anti-vascular endothelial growth factor (VEGF) antibody and steroids serve as a viable option for the treatment of DR. However, several clinical studies that assessed the long-term efficacy and safety of this therapy have yielded inconclusive results. Therefore, there is an urgent need to develop potent and safe drugs for the effective management of DR. In this review, we discuss various plant-derived small molecules (phytochemicals) that have been investigated for retinal cytoprotective effects in pre-clinical and clinical studies. Furthermore, we highlight the caveats on using phytochemicals for the management of DR.
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Affiliation(s)
- S Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates.
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Nurulain S, Ojha S, Dhanasekaran S, Kuča K, Nalin N, Sharma C, Adem A, Kalász H. HPLC determination of K027 in the body of pregnant mice. ACTA CHROMATOGR 2017. [DOI: 10.1556/1326.2017.29.1.06] [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: 11/19/2022]
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Patil KR, Goyal SN, Sharma C, Patil CR, Ojha S. Phytocannabinoids for Cancer Therapeutics: Recent Updates and Future Prospects. Curr Med Chem 2016; 22:3472-501. [PMID: 26179998 DOI: 10.2174/0929867322666150716115057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/24/2015] [Accepted: 07/13/2015] [Indexed: 11/22/2022]
Abstract
Phytocannabinoids (pCBs) are lipid-soluble phytochemicals present in the plant, Cannabis sativa L. and non-cannabis plants which have a long history in recreation and traditional medicine. The plant and the constituents isolated were central in the discovery of the endocannabinoid system (ECS), the most new target for drug discovery. The ECS includes two G-protein-coupled receptors; the cannabinoid receptors-1 and -2 (CB1 and CB2) for marijuana's psychoactive principle Δ(9)-tetrahydrocannabinol (Δ(9)-THC), their endogenous small lipid ligands; namely anandamide (AEA) and 2-arachidonoylglycerol (2-AG), also known as endocannabinoids and the enzymes for endocannabinoid biosynthesis and degradation such as fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL). The ECS has been suggested as a pro-homeostatic and pleiotropic signaling system activated in a time- and tissue-specific way during pathological conditions including cancer. Targeting the CB1 receptors becomes a concern because of adverse psychotropic reactions. Hence, targeting the CB2 receptors or the endocannabinoid metabolizing enzymes by pCBs obtained from plants lacking psychotropic adverse reactions has garnered interest in drug discovery. These pCBs derived from plants appear safe and effective with a wider access and availability. In the recent years, several pCBs derived other than non-cannabinoid plants have been reported to bind to and functionally interact with cannabinoid receptors and appear promising candidate for drug development including cancer therapeutics. Several of them also targets the endocannabinoid metabolizing enzymes that control endocannabinoid levels. In this article, we summarize and critically discuss the updates and future prospects of the pCBs as novel and promising candidates for cancer therapeutics.
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Affiliation(s)
| | | | | | | | - S Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences United Arab Emirates University, Al Ain, United Arab Emirates, UAE.
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Gautam SK, Das A, Ojha S, Shukla DK, Phase DM, Singh F. Electronic structure modification and Fermi level shifting in niobium-doped anatase titanium dioxide thin films: a comparative study of NEXAFS, work function and stiffening of phonons. Phys Chem Chem Phys 2016; 18:3618-27. [DOI: 10.1039/c5cp07287e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure and tuning of work function (WF) by electronic excitations (EEs) induced by swift heavy ions (SHIs) in anatase niobium-doped titanium dioxide (NTO) thin films is reported.
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Affiliation(s)
| | | | - S. Ojha
- Inter University Accelerator Centre
- India
| | - D. K. Shukla
- UGC-DAE Consortium for Scientific Research
- Indore 452017
- India
| | - D. M. Phase
- UGC-DAE Consortium for Scientific Research
- Indore 452017
- India
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Siva V, Chettah A, Satpati B, Ojha S, Kanjilal D, Sahoo PK. Enhanced surface and interface diffusion in Ni–Bi bilayers by swift heavy ion irradiation. RSC Adv 2016. [DOI: 10.1039/c6ra12004k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Enhanced surface and interface diffusion in Ni–Bi bilayers has been observed using 100 MeV Au ion irradiation. The experimental observations were demonstrated using thermal spike model calculations.
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Affiliation(s)
- Vantari Siva
- School of Physical Sciences
- National Institute of Science Education and Research
- Bhubaneswar
- India-752050
| | - Abdelhak Chettah
- Laboratoire LGMM
- Groupe des materiaux fonctionnels
- Université 20 Août 1955-SKIKDA
- Algeria
| | - Biswarup Satpati
- Surface Physics & Materials Science Division
- Saha Institute of Nuclear Physics
- India-700064
| | - S. Ojha
- Inter-University Accelerator Centre
- India-110067
| | - D. Kanjilal
- Inter-University Accelerator Centre
- India-110067
| | - Pratap K. Sahoo
- School of Physical Sciences
- National Institute of Science Education and Research
- Bhubaneswar
- India-752050
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Kargel JS, Leonard GJ, Shugar DH, Haritashya UK, Bevington A, Fielding EJ, Fujita K, Geertsema M, Miles ES, Steiner J, Anderson E, Bajracharya S, Bawden GW, Breashears DF, Byers A, Collins B, Dhital MR, Donnellan A, Evans TL, Geai ML, Glasscoe MT, Green D, Gurung DR, Heijenk R, Hilborn A, Hudnut K, Huyck C, Immerzeel WW, Liming J, Jibson R, Kääb A, Khanal NR, Kirschbaum D, Kraaijenbrink PDA, Lamsal D, Shiyin L, Mingyang L, McKinney D, Nahirnick NK, Zhuotong N, Ojha S, Olsenholler J, Painter TH, Pleasants M, Pratima KC, Yuan QI, Raup BH, Regmi D, Rounce DR, Sakai A, Donghui S, Shea JM, Shrestha AB, Shukla A, Stumm D, van der Kooij M, Voss K, Xin W, Weihs B, Wolfe D, Lizong W, Xiaojun Y, Yoder MR, Young N. Geomorphic and geologic controls of geohazards induced by Nepal's 2015 Gorkha earthquake. Science 2015; 351:aac8353. [PMID: 26676355 DOI: 10.1126/science.aac8353] [Citation(s) in RCA: 250] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 11/27/2015] [Indexed: 11/02/2022]
Abstract
The Gorkha earthquake (magnitude 7.8) on 25 April 2015 and later aftershocks struck South Asia, killing ~9000 people and damaging a large region. Supported by a large campaign of responsive satellite data acquisitions over the earthquake disaster zone, our team undertook a satellite image survey of the earthquakes' induced geohazards in Nepal and China and an assessment of the geomorphic, tectonic, and lithologic controls on quake-induced landslides. Timely analysis and communication aided response and recovery and informed decision-makers. We mapped 4312 coseismic and postseismic landslides. We also surveyed 491 glacier lakes for earthquake damage but found only nine landslide-impacted lakes and no visible satellite evidence of outbursts. Landslide densities correlate with slope, peak ground acceleration, surface downdrop, and specific metamorphic lithologies and large plutonic intrusions.
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Affiliation(s)
- J S Kargel
- Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ, USA.
| | - G J Leonard
- Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ, USA
| | - D H Shugar
- School of Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA, USA.
| | - U K Haritashya
- Department of Geology, University of Dayton, Dayton, OH, USA.
| | - A Bevington
- Ministry of Forests, Lands and Natural Resource Operations, Prince George, BC, Canada
| | - E J Fielding
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - K Fujita
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - M Geertsema
- Ministry of Forests, Lands and Natural Resource Operations, Prince George, BC, Canada
| | - E S Miles
- Scott Polar Research Institute, University of Cambridge, Cambridge, UK
| | - J Steiner
- Institute of Environmental Engineering, Federal Institute of Technology-ETH, Zurich, Switzerland
| | - E Anderson
- NASA Marshall Space Flight Center, Huntsville, AL, USA
| | - S Bajracharya
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | | | | | - A Byers
- The Mountain Institute, Elkins, WV, USA
| | - B Collins
- U.S. Geological Survey, Menlo Park, CA, USA
| | - M R Dhital
- Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - A Donnellan
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - T L Evans
- Department of Geography, University of Victoria, Victoria, BC, Canada
| | - M L Geai
- CVA Engineering, Suresnes, France
| | - M T Glasscoe
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - D Green
- NASA Headquarters, Washington, DC, USA
| | - D R Gurung
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | - R Heijenk
- Ministry of Forests, Lands and Natural Resource Operations, Prince George, BC, Canada
| | - A Hilborn
- Department of Geography, University of Victoria, Victoria, BC, Canada
| | - K Hudnut
- Earthquake Science Center, U.S. Geological Survey, Pasadena, CA, USA
| | - C Huyck
- ImageCat, Long Beach, CA, USA
| | - W W Immerzeel
- Faculty of Geosciences, Utrecht University, Utrecht, Netherlands
| | - Jiang Liming
- State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, Hubei Province, China
| | - R Jibson
- U.S. Geological Survey, Golden, CO, USA
| | - A Kääb
- Department of Geosciences, University of Oslo, Blindern, Oslo, Norway
| | - N R Khanal
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | - D Kirschbaum
- Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - D Lamsal
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Liu Shiyin
- Cold and Arid Regions of Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
| | - Lv Mingyang
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
| | - D McKinney
- Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - N K Nahirnick
- Department of Geography, University of Victoria, Victoria, BC, Canada
| | - Nan Zhuotong
- School of Geography Science, Nanjing Normal University, Nanjing, China
| | - S Ojha
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - J Olsenholler
- Department of Geography, Texas A&M University, College Station, TX, USA
| | - T H Painter
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - M Pleasants
- Department of Geology, University of Dayton, Dayton, OH, USA
| | - K C Pratima
- Arizona Remote Sensing Center, School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Q I Yuan
- Cold and Arid Regions of Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
| | - B H Raup
- National Snow and Ice Data Center, University of Colorado, Boulder, CO, USA
| | - D Regmi
- Himalayan Research Center, Kathmandu, Nepal
| | - D R Rounce
- Environmental and Water Resources Engineering, University of Texas at Austin, Austin, TX, USA
| | - A Sakai
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | - Shangguan Donghui
- Cold and Arid Regions of Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
| | - J M Shea
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | - A B Shrestha
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | - A Shukla
- Wadia Institute of Himalayan Geology, Dehradun, India
| | - D Stumm
- International Centre for Integrated Mountain Development, Kathmandu, Nepal
| | - M van der Kooij
- MacDonald Dettwiler and Associates-GSI, Ottawa, Ontario, Canada
| | - K Voss
- Department of Geography, University of California, Santa Barbara, Santa Barbara, CA, USA
| | - Wang Xin
- College of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, China
| | - B Weihs
- Geography Department, Kansas State University, Manhattan, KS, USA
| | - D Wolfe
- Global Land Ice Measurements from Space (GLIMS) Steward, Alaska Region, Anchorage, AK, USA
| | - Wu Lizong
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
| | - Yao Xiaojun
- College of Geographical Science and Environment, Northwest Normal University, China
| | - M R Yoder
- Department of Physics, University of California, Davis, Davis, CA, USA
| | - N Young
- Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia
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Gehlot J, Abhilash SR, Ojha S, Mehta D, Kabiraj D, Vinodkumar AM. Fabrication and characterization of carbon-backed 203,205Tl targets. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4100-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Al Ameri R, Al Ahbabi N, Sheikh A, Nalin N, Ojha S. Bisabolol mitigates isoproterenol-induced myocardial infarction in rats. HAMDAN MEDICAL JOURNAL 2015. [DOI: 10.7707/hmj.534] [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: 11/18/2022] Open
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Al Katheeri MASA, Sheikh A, Nalin N, Ojha S. β-Caryophyllene, a cannabinoid receptor type-2 agonist protects against doxorubicin-induced cardiotoxicity. HAMDAN MEDICAL JOURNAL 2015. [DOI: 10.7707/hmj.524] [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: 11/18/2022] Open
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Al Mansoori M, Al Shamri N, Al Kendi N, Al Jaberi M, Sheikh A, Amir N, Nalin N, Ojha S. Bisabolol ameliorates cisplatin-induced nephrotoxicity in rats. HAMDAN MEDICAL JOURNAL 2015. [DOI: 10.7707/hmj.523] [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: 11/18/2022] Open
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Al Mansouri S, Ojha S, Al Maamari E, Al Ameri M, Nurulain SM, Bahi A. The cannabinoid receptor 2 agonist β-caryophyllene reduces voluntary alcohol intake and attenuated ethanol-induced place preference and sensitivity in mice. HAMDAN MEDICAL JOURNAL 2015. [DOI: 10.7707/hmj.490] [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: 11/18/2022] Open
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Abstract
INTRODUCTION A gossypiboma refers to a cotton-based foreign body left inadvertently in the human body following a surgical procedure. Although a rare event, they tend to be found in the abdomen but few are known to be intrahepatic. CASE HISTORY We report the case of a 44 year-old man who presented with recurrent episodes of jaundice and cholangitis, on a background of a right hepatectomy for hydatid cyst excision 20 years previously. This case was discussed at our hepatobiliary multidisciplinary team meetings on several occasions and a presumed diagnosis of intrahepatic cholangiocarcinoma was made. Biopsies of the mass had purely shown inflammation and remained inconclusive. It was decided that the patient should undergo a complete extended right hepatectomy with resection and reconstruction of the left branch of the portal vein. On attempting to obtain intraoperative frozen section specimens prior to resection, open excision revealed two large swabs encased in a calcified cavity. Removal of the swabs resulted in resolution of the mass and obstructive symptoms. CONCLUSIONS Gossypiboma should be a rare differential diagnosis in all patients following a laparotomy presenting with obstructive symptoms, particularly in countries where strict surgical protocols may not be in place. This case also highlights the need to perform an intraoperative biopsy in any uncertain case of a liver lesion as we have shown that an extensive operation with its increased morbidity can occasionally be avoided.
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Affiliation(s)
- S Ojha
- Imperial College Healthcare NHS Trust, UK
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Ojha S, Goyal S, Sharma C, Arora S, Kumari S, Arya DS. Cardioprotective effect of lycopene against isoproterenol-induced myocardial infarction in rats. Hum Exp Toxicol 2012; 32:492-503. [PMID: 23060410 DOI: 10.1177/0960327112454890] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present study was designed to evaluate the cardioprotective potential of lycopene (LCP) against isoproterenol (ISP)-induced myocardial infarction (MI), by assessing hemodynamic, biochemical and histopathological parameters. Wistar male albino rats were orally administered with LCP (0.5, 1.0 and 1.5 mg/kg) or with vehicle for 30 days, with concurrent subcutaneous injections of ISP (85 mg/kg) on days 28 and 29. ISP significantly (p < 0.05) decreased systolic, diastolic and mean arterial blood pressure (SAP, DAP and MAP, respectively) and heart rate (HR). ISP also decreased contractility (+LVdP/dt), relaxation (-LVdP/dt) and increased left ventricular end-diastolic pressure (LVEDP). In addition to functional impairment, ISP also caused a significant (p < 0.05) decrease in antioxidants, namely, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSHPx), glutathione (GSH), cardiac injury marker enzymes, creatine phosphokinase-MB (CK-MB) and lactate dehydrogenase (LDH), as well as induced lipid peroxidation, malonaldialdehyde (MDA) and histopathological alterations in heart. However, pretreatment with LCP significantly (p < 0.05) attenuated ISP-induced cardiac dysfunction as evidenced by improved SAP, DAP, MAP, HR, (±)LVdP/dt and reduced LVEDP. Pretreatment with LCP also significantly (p < 0.05) prevented the depletion of antioxidants (SOD, CAT, GSHPx and GSH), myocyte injury marker enzymes (CK-MB and LDH) and inhibited lipid peroxidation and MDA formation in the heart. Furthermore, reduced necrosis, edema and infiltration of inflammatory cells on histopathological examination also depicted the protective effect of LCP against the deleterious effect of ISP. Based on the results, it is suggested that LCP possesses significant cardioprotective potential and may serve as an adjunct in treatment and prophylaxis of MI.
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Affiliation(s)
- S Ojha
- Cardiovascular Laboratory, Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
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Chavan PD, Bhat VG, Ojha S, Kelkar RS, Rajadhyaksha SB, Marathe AN. Detection of bacterial growth in blood components using oxygen consumption as a surrogate marker in a tertiary oncology setup. Indian J Med Microbiol 2012; 30:212-4. [DOI: 10.4103/0255-0857.96695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kumar P, Verma A, Roy B, Rajput S, Ojha S, Anand S, Yadav P, Arora J, De S, Goswami SI, Datta TK. Effect of varying glucose concentrations during in vitro maturation and embryo culture on efficiency of in vitro embryo production in buffalo. Reprod Domest Anim 2011; 47:269-73. [PMID: 21762215 DOI: 10.1111/j.1439-0531.2011.01849.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was aimed to optimize glucose level at different stages of buffalo in vitro embryo production procedure. Three glucose levels (1.5, 5.6 and 10 mm) along with a control (0 mm) were used at three phases of in vitro fertilisation (IVF) procedure viz. in vitro maturation (IVM), in vitro culture (IVC-I) (12-72 hpi) and IVC-II (72 hpi to 7 dpi). Maturation rate of oocytes was found different under different glucose concentrations, and significantly more number of oocytes reached to MII under 5.6 mm glucose. The glucose levels at each phase (IVM, IVC-I and IVC-II) individually had significant effect on blastocyst rate, and the level used at one phase had significant effect on the outcome of next phase. Complete withdrawal of glucose from any of these stages irrespective of concentrations used at subsequent stage/s resulted in significantly lower number of blastocysts. However, the changing levels of glucose had differential effects during different phases of IVF steps. The most prominent effect of glucose level was observed during IVM. The presence of 5.6 mm glucose at all stages was most effective to yield highest blastocyst rate in buffalo IVF system.
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Affiliation(s)
- P Kumar
- Department of Haematology, Lund University, Lund, Sweden
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Pankaj Kumar, Pattanaik JK, Ojha S, Gargari S, Joshi R, Roonwal GS, Balakrishnan S, Chopra S, Kanjilal D. 10Be measurements at IUAC-AMS facility. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1184-x] [Citation(s) in RCA: 7] [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: 10/18/2022]
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Ojha S, Lacouture S, Gottschalk M, MacInnes J. Characterization of colonization-deficient mutants of Actinobacillus suis. Vet Microbiol 2010; 140:122-30. [DOI: 10.1016/j.vetmic.2009.07.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 06/26/2009] [Accepted: 07/03/2009] [Indexed: 10/20/2022]
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Willcocks LC, Chaudhry AN, Smith JC, Ojha S, Doffinger R, Watson CJE, Smith KGC. The effect of sirolimus therapy on vaccine responses in transplant recipients. Am J Transplant 2007; 7:2006-11. [PMID: 17578505 DOI: 10.1111/j.1600-6143.2007.01869.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [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: 01/25/2023]
Abstract
Different immunosuppressant regimens vary in their effects on antibody responses to vaccination. The combination of prednisolone and azathioprine has only a minor effect, whereas the addition of ciclosporin attenuates protective antibody responses to influenza vaccination. The effect of sirolimus, a new immunosuppressant, on vaccine responses has been little studied. Thirty-two hepatic or renal transplant patients randomized to calcineurin inhibitor-based or sirolimus-based immunosuppression were vaccinated against influenza and pneumococcus. Following tri-valent influenza vaccination, a similar rise in antibody titer occurred in sirolimus and calcineurin inhibitor (CNI) treated patients, though sirolimus treated patients developed a 'protective' titer to more influenza antigens. The pneumococcal polysaccharide vaccine was equally effective in both groups. Hence, vaccination guidelines in place for CNI treated patients are likely to be appropriate for transplant recipients maintained on sirolimus.
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Affiliation(s)
- L C Willcocks
- Cambridge Institute for Medical Research, University of Cambridge School of Clinical Medicine, Addenbrooke's Hospital, Hills Road, Cambridge, UK
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Saini N, Singh J, Sehgal R, Ojha S. Evaluation of liver function impairment and lipid peroxidation induced by lantana camara leaf powder administration in adult rat serum and liver. Cell Mol Biol (Noisy-le-grand) 2007; 53:79-83. [PMID: 17543236] [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] [Received: 08/01/2006] [Accepted: 12/21/2006] [Indexed: 05/15/2023]
Abstract
Lantana camara is a common weed and certain medicinal properties have been attributed to this plant, but most varieties of this plant are reported to be highly toxic to animals. The plant is a native of America but a few varieties are indigenous to tropical Asia and Africa. The present investigation was done to study the hepatotoxic and lipid peroxidative effects of this noxious weed on female Wistar rats. Eighty four percent (84%) increase was observed in the activity of AST in group B and 120% increase was noted in group C in serum. In, liver tissue this increase was 66% and 258%. In the case of ALT, 165% increase was observed in group B and 219% increase was observed in group C in serum. In, liver there was 46% increase in group B and 216% increase in group C in the ALT activity. Similarly, 30% and 50% increase in group B and 120% and 300% increase in group C in the activity of ALP was observed with respect to control group. The overall protein concentration was increased in serum and decreased in liver tissue. Lipid peroxidation in liver tissue was inhibited by 22% in group B and 55% in group C. Thus Lantana camara is a toxic plant which produces severe hepatotoxicity in rats, but it also prevented lipid peroxidation that may suggest that Lantana camara may be acting as antioxidant but, exactly which of its component is responsible for this activity is not known and needs future investigations.
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Affiliation(s)
- N Saini
- Department of Hepatology, Postgraduate Institute of Medical Education & Research, Panjab University, Chandigarh, India
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Dutta S, Kundu A, Chakraborty MR, Ojha S, Chakrabarti J, Chatterjee NC. Production and Optimization of Fe (III) Specific Ligand, the Siderophore of Soil Inhabiting and Wood Rotting Fungi as Deterrent to Plant Pathogens. ACTA ACUST UNITED AC 2006. [DOI: 10.1556/aphyt.41.2006.3-4.7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
Enteric duplication cysts are hollow, epithelium-lined, cystic, or tubular structures that are intimately attached to a portion of the gastrointestinal tract. Completely isolated duplication cysts are an extremely rare variety of gastrointestinal duplications with their own exclusive blood supply. Only two such previous cases have been reported in the literature so far. We report a third case of completely isolated, giant duplication cyst with a vascular pedicle in a four-day-old neonate with a review of the literature.
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Affiliation(s)
- A Sinha
- Department of Pediatric Surgery, Maulana Azad Medical College, New Delhi, India.
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