274 results on '"Thakur AK"'
Search Results
2. Effect of nitrogen fertilization on cropping behaviour and quality of Royal Delicious apples in temperate ecosystem
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Singh, Deepika, Bhatia, HS, Kumari, Neelam, and Thakur, AK
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- 2018
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3. Genetic Diversity Assessment and Characterization of Indian Mustard (Brassica juncea L.) Varieties using Agro-morphological Traits
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Singh, KH, Shakya, Ritu, Nanjundan, J, Thakur, AK, Singh, Karnal, and Singh, KK
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- 2018
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4. Agrobacterium-mediated genetic transformation of Populus deltoides marsh clone G48 with gus and npt-II genes
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Saraswat, A, Khan, AA, Thakur, AK, Gaur, A, and Srivastava, DK
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- 2016
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5. Standardization of feed rate and vacuum pressure for processing of seeds of bell pepper (Capsicum annuum L.)
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Mehta, DK, Kanwar, HS, and Thakur, AK
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- 2010
6. Effect of organic manures and biofertilizers on growth and fruit yield of tomato (Solanum lycopersicum L.)
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Thakur, KS, Thakur, Rajesh, Shukla, YR, Mehta, DK, and Thakur, AK
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- 2010
7. Effect of organic manures and biofertilizers on growth and yield of tomato and french bean under mid hills of Himachal Pradesh
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Thakur, KS, Kumar, Dharminder, Vikram, Amit, Thakur, AK, and Mehta, DK
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- 2010
8. Influence of organicseed priming on germination and seedling quality in bell pepper (Capsicum annuum L.)
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Mehta, DK, Kanwar, HS, Thakur, AK, and Thakur, KS
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- 2010
9. Patented therapeutic drug delivery strategies for targeting pulmonary diseases.
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Thakur, AK, Chellappan, DK, Dua, K, Mehta, M, Satija, S, Singh, I, Thakur, AK, Chellappan, DK, Dua, K, Mehta, M, Satija, S, and Singh, I
- Abstract
Introduction: Pulmonary route is one of the preferred routes for the administration of therapeutically active agents for systemic as well as localized delivery. Chronic obstructive pulmonary disease (COPD), bronchial asthma, pneumonia, pulmonary hypertension, bronchiolitis, lung cancer, and tuberculosis are the major chronic diseases associated with the pulmonary system. Knowledge about the affecting factors, namely, the etiology, pathophysiology, and the various barriers (mechanical, chemical, immunological, and behavioral) in pulmonary drug delivery is essential to develop an effective drug delivery system. Formulation strategies and mechanisms of particle deposition in the lungs also play an important role in designing a suitable delivery system.Areas covered: In the present paper, various drug delivery strategies, viz. nanoparticles, microparticles, liposomes, powders, and microemulsions have been discussed systematically, from a patent perspective.Expert opinion: Patent publications on formulation strategies have been instrumental in the evolution of new techniques and technologies for safe and effective treatment of pulmonary diseases. New delivery systems are required to be simple/reproducible/scalable/cost-effective scale for manufacturing ability and should be safe/effective/stable/controllable for meeting quality and regulatory compliance.
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- 2020
10. Effect of foliar application of nutrient elements on upland rice under water stress condition in Bastar Plateau
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., Paresh, primary, Chandrakar, T, additional, Sharma, GK, additional, Pradhan, A, additional, Saxena, RR, additional, Singh, DP, additional, and Thakur, AK, additional
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- 2020
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11. Congenital cystic adenomatoid malformation of the lung masquerading as pneumothorax
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Swarnim, S, primary, Rai, BK, additional, Bidhuri, N, additional, and Thakur, AK, additional
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- 2017
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12. Stromal SLIT2 impacts on pancreatic cancer-associated neural remodeling
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Secq, V, Leca, J, Bressy, C, Guillaumond, F, Skrobuk, P, Nigri, J, Lac, S, Lavaut, M-N, Bui, T-T, Thakur, Ak, Callizot, N, Steinschneider, R, Berthezene, P, Dusetti, N, Ouaissi, M, Moutardier, V, Calvo, E, Bousquet, C, Garcia, S, Bidaut, G, Vasseur, S, Iovanna, Jl, Tomasini, R, Department of Pathology, Hôpital Nord [CHU - APHM], Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche en neurobiologie - neurophysiologie de Marseille (CRN2M), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherches en Oncologie biologique et Oncopharmacologie (CRO2), Aix Marseille Université (AMU)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), Molecular Endocrinology and Oncology Research Center, Centre Hospitalier de l'Universite Laval (CHUL) Research Center, Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Aix Marseille Université (AMU), and HAL AMU, Administrateur
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Male ,Mice, Nude ,Nerve Tissue Proteins ,MICROENVIRONMENT ,PROGRESSION ,[SDV.CAN]Life Sciences [q-bio]/Cancer ,Cell Communication ,Models, Biological ,PERINEURAL INVASION ,AXON GUIDANCE ,[SDV.CAN] Life Sciences [q-bio]/Cancer ,Cell Movement ,REGENERATION ,Cell Line, Tumor ,Tumor Microenvironment ,Animals ,Humans ,beta Catenin ,Neurons ,EARLY RECURRENCE ,PATHWAYS ,PAIN ,ADENOCARCINOMA ,Fibroblasts ,Cadherins ,Axons ,Cell Compartmentation ,Culture Media ,Gene Expression Regulation, Neoplastic ,Pancreatic Neoplasms ,PROBE LEVEL ,Intercellular Signaling Peptides and Proteins ,Original Article ,Schwann Cells ,Stromal Cells ,Transcriptome ,Signal Transduction - Abstract
International audience; Pancreatic ductal adenocarcinoma (PDA) is a critical health issue in the field of cancer, with few therapeutic options. Evidence supports an implication of the intratumoral microenvironment (stroma) on PDA progression. However, its contribution to the role of neuroplastic changes within the pathophysiology and clinical course of PDA, through tumor recurrence and neuropathic pain, remains unknown, neglecting a putative, therapeutic window. Here, we report that the intratumoral microenvironment is a mediator of PDA-associated neural remodeling (PANR), and we highlight factors such as 'SLIT2' (an axon guidance molecule), which is expressed by cancer-associated fibroblasts (CAFs), that impact on neuroplastic changes in human PDA. We showed that 'CAF-secreted SLIT2' increases neurite outgrowth from dorsal root ganglia neurons as well as from Schwann cell migration/ proliferation by modulating N-cadherin/β-catenin signaling. Importantly, SLIT2/ROBO signaling inhibition disrupts this stromal/ neural connection. Finally, we revealed that SLIT2 expression and CAFs are correlated with neural remodeling within human and mouse PDA. All together, our data demonstrate the implication of CAFs, through the secretion of axon guidance molecule, in PANR. Furthermore, it provides rationale to investigate the disruption of the stromal/neural compartment connection with SLIT2/ROBO inhibitors for the treatment of pancreatic cancer recurrence and pain. Even after significant efforts from the scientific community in the past decade, pancreatic ductal adenocarcinoma (PDA) remains one of the most lethal cancers with worrying predictions. 1 Median survival stagnates around 5 months, together with a 5-year survival at 5%. For 5–20% of patients treated surgically, the 5-year survival reaches 20%, with a median survival of 16 months. Metastasis onset and high prevalence of local tumor recurrence after potential curative resection influence patient's survival. A recent study revealed that the overall survival of patients with tumor recurrence was 9.3, versus 26.3 months for patients without early relapse. 2,3
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- 2015
13. Biology of Pulse Beetle (Callosobruchus chinensis) and Its Management through Plant Products on Black Gram (Vigna mungo)
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Thakur, AK and Pathania, M
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No Abstract.
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- 2013
14. Demography, clinical profile and outcome of children admitted with acute encephalitis syndrome in a Medical College Hospital of Bihar
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Ranjan, A, primary, Singh, A, additional, and Thakur, AK, additional
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- 2016
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15. Horticulture development: Current status and strategies
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Kumar, S., Das, Bikash, Singh, Arun Kumar, Pan, RS, Jha, BK, Naik, SK, Thakur, AK, and Bhatt, BP
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This record was migrated from the OpenDepot repository service in June, 2017 before shutting down., {"references":["Kumar, S.; Das, B.; Singh, A.K.; Pan, R.S.; Jha, B.K.; Naik, S.K.; Thakur, A.K. and Bhatt, B.P. (2012). Horticulture development: Current status and strategies. In: Bhatt, B.P.; Sikka, A.K.; Mukherjee, J.; Islam, A. and Dey, A. (eds). Status of Agricultural Development in Eastern India, pp. 293-332. ICAR Research Complex for Eastern Region, Patna"]}
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- 2012
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16. Viscerotropic potential of parasites isolated from post-kala-azar dermal leishmaniasis cases : An experimental evidence
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Narayan, S, primary, Gupta, AK, additional, Verma, N, additional, Thakur, AK, additional, and Das, P, additional
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- 2012
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17. Evaluation of planting methods in irrigated rice
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Thakur, AK, primary, Roychowdhury, S, additional, Kundu, DK, additional, and Singh, Ravender, additional
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- 2004
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18. Pediatric interventional cardiac symposium (PICS-VI). Device closure of patent ductus arteriosus.
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Arora R, Sengupta PP, Thakur AK, Mehta V, Trehan V, Arora, Ramesh, Sengupta, Partho P, Thakur, Ashish K, Mehta, Vimal, and Trehan, Vijay
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- 2003
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19. Surgical excision of recurrent renal angiomyolipoma after previous embolization and nephron-sparing surgery - A case report.
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Khadga A, Adhikari MB, Maharjan B, Mishra P, Yadav DK, and Thakur AK
- Abstract
Introduction: Renal angiomyolipoma is the most common benign kidney tumor, representing 1-3 % of solid renal tumors. Despite its benign nature, it can be associated with lethal hemorrhage, and can also show signs of local extension mimicking malignant tumors. The cornerstone of treatment remains angioembolization and nephron sparing surgery., Presentation of Case: A 51-year-old Nepalese woman presented to the emergency department with acute abdominal pain and signs of hypovolemic shock. She was managed with resuscitation, followed by angioembolization of a left renal artery pseudoaneurysm. A few months later, she underwent laparoscopic nephron-sparing surgery. One year later, she had excision of a recurrent left angiomyolipoma. Both the initial and final histologic examinations confirmed the diagnosis of classic variant renal angiomyolipoma., Discussion: Although transcatheter angioembolization is the treatment of choice for bleeding angiomyolipoma, there is a higher likelihood of re-embolization and the need for surgical excision. Therefore, surgeons should carefully consider treatment options and discuss the pros and cons of each with the patient and their family, taking into account the available infrastructure and expertise., Conclusion: We report a rare and interesting case of acutely bleeding angiomyolipoma. The patient was successfully treated with angioembolization followed by laparoscopic nephron-sparing surgery. However, the tumor recurred a year later, necessitating conversion to open nephron-sparing surgery., Competing Interests: Conflict of interest statement None., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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20. Effect of loss-of-function CYP2C19 variants on clinical outcomes in coronary artery disease patients treated with clopidogrel: A systematic meta-analysis approach.
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Sharma R, Aggarwal G, Kumar A, Thakur AK, Pandit M, Sharma V, Singh M, Majeed J, and Ajmera P
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- Humans, Treatment Outcome, Loss of Function Mutation, Cytochrome P-450 CYP2C19 genetics, Clopidogrel therapeutic use, Coronary Artery Disease genetics, Coronary Artery Disease drug therapy, Platelet Aggregation Inhibitors therapeutic use
- Abstract
For many years, clopidogrel has been a commonly utilised antiplatelet drug in the management of coronary artery disease (CAD). It's thought that the CYP2C19 loss of function (LoF) polymorphism causes clopidogrel's poor metabolism, which eventually leads to resistance. Previous research produced extremely divergent and inconsistent results, making it impossible to draw definitive conclusions. Therefore, current, investigation was carried out to obtain definitive evidence from an updated meta-analysis on the connection between CYP2C19 LoF polymorphism and coronary artery event in patients treated with clopidogrel. 52,542 individuals with coronary artery disease who were receiving clopidogrel treatment were included in 87 carefully chosen trials from reliable databases that we used for our meta-analysis. According to our data, those who carry one or more CYP2C19 LoF alleles worldwide are much more likely to experience composite events and coronary artery events than people who do not carry these alleles, especially in Asian populations. Our meta-analysis observed that the global population, particularly Asians receiving clopidogrel treatment, is at risk of recurrent coronary artery events and composite events if they carry the CYP2C19 LoF alleles. Additional research is essential on alternative antiplatelet therapies for individuals who exhibit poor or intermediate metabolic activity. OBJECTIVES: 1.To systematically analyze the current evidence regarding the association of CYP2C19 variants with coronary artery disease (CAD). 2.To conduct a meta-analysis to investigate the association between loss of function (LoF) CYP2C19 modifications and CAD., Competing Interests: Declaration of competing interest The authors declare no conflict of interest. Furthermore, for declaration purpose that MP and VS are affiliated with NMC Genetics India Pvt. Ltd., while MS is associated with Semper Centrum Healthcare Pvt. Ltd. Despite these affiliations, all stated authors declare no financial interests or competing financial interests in relation to the subject matter., (Copyright © 2024. Published by Elsevier B.V.)
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- 2024
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21. Diffusive Memristor with CuS Nanoparticles Embedded in Polymeric Film as Artificial Nociceptor.
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Deb R, Panda D, Nair MG, Yasmin F, Mishra Y, Thakur AK, and Mohapatra SR
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The threshold behavior and the ion diffusion dynamics in diffusive volatile memristors have a very uncanny resemblance to the transduction process of biological nociceptors. Hence, the diffusive memristors are considered the most suited for making artificial nociceptive systems. To facilitate their widespread adoption, it is imperative to develop polymeric or organic-inorganic hybrid material-based diffusive memristors that are economical, biocompatible, and easily processable. In this study, we present a cluster-type polymeric diffusive memristor where copper is used as the active top electrode. The switching medium comprises copper(II) sulfide (CuS) nanoparticles embedded in poly(ethylene oxide) (PEO). The devices show electrochemical metalization (ECM)-type and bidirectional diffusive volatile memory with high nonlinearity (10
4 ) and turn-on slope (5.6 mV/dec). They reliably remain diffusive volatile with up to 10 wt % CuS in PEO and for a wide range of compliance (10-6 to 10-2 A) without transitioning to the bipolar nonvolatile type. The low reduction potential of CuS and optimal segmental dynamics of PEO work synergistically to ensure stable and reproducible diffusive memory. The CuS nanoparticles act as bipolar electrodes, undergoing local oxidation and reduction under the influence of the bias. The switching of resistance states in the CuS-PEO memristors is attributed to the formation of cluster-type filaments between CuS nanoparticles within the PEO matrix supported by the participation of copper ions from the top Cu electrode. The observation of low filament temperature and the independence of on-state resistance with respect to the device area and temperature further corroborate the cluster-type filament in CuS-PEO memristors. Using a 5 wt % CuS-based device, an artificial nociceptor is realized, which successfully mimics most of the nociceptive plasticities such as threshold, relaxation, no adaptation, and sensitization.- Published
- 2024
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22. Candidaemia and Central Line-Associated Candidaemia in a Network of Indian ICUs: Impact of COVID-19 Pandemic.
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Mathur P, Srivastav S, Thakur AK, Parveen R, Puraswani M, Srivastava AK, Chakrabarti A, Rodrigues C, Balaji V, Ray P, Biswal M, Wattal C, Venkatesh V, Sethuraman N, Bhattacharya S, Nag VL, Tak V, Behera B, Goel N, Iravane J, Mukherjee S, Ray R, Singh SK, Mukhopadhyay C, Michael JS, Fomda BA, Chelliah J, Shetty A, Karuna T, Ningombam A, Kumar S, Soni KD, Sagar S, Aggrawal R, Gupta D, Singh GP, Bindra A, Farooque K, Purwar S, Khadanga S, Vandana KE, Varma M, Deotale V, Das P, Lohiya R, Prasad A, Gupta PK, Omar BJ, Aggarwal A, Baqal S, Devi KR, Singh LC, Chatterji S, Goel G, Mukherjee S, Ramanathan YV, Sonowal A, Verma P, Mahapatra A, Hallur V, Gaikwad UN, Bhargava A, Padmaja K, Bheerappa N, Jain V, Bhatia P, Singh K, Khera D, Gupta N, Paul H, Verma S, Arshad Z, Jhaj R, Malik S, Thirunarayan MA, Raj HJ, Gupta P, Himanshu D, Rudramurthy SM, Nath R, Gur R, Lyngdoh NM, Lyngdoh C, Devi S, Malhotra S, Gaind R, Saksena R, Sharma R, and Walia K
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- Humans, India epidemiology, Male, Middle Aged, Female, Adult, SARS-CoV-2, Aged, Catheter-Related Infections epidemiology, Catheter-Related Infections microbiology, Pandemics, COVID-19 epidemiology, Candidemia epidemiology, Intensive Care Units statistics & numerical data, Cross Infection epidemiology
- Abstract
Background and Objectives: Candidaemia is a potentially life-threatening emergency in the intensive care units (ICUs). Surveillance using common protocols in a large network of hospitals would give meaningful estimates of the burden of candidaemia and central line associated candidaemia in low resource settings. We undertook this study to understand the burden and epidemiology of candidaemia in multiple ICUs of India, leveraging the previously established healthcare-associated infections (HAI) surveillance network. Our aim was also to assess the impact that the pandemic of COVID-19 had on the rates and associated mortality of candidaemia., Methods: This study included adult patients from 67 Indian ICUs in the AIIMS-HAI surveillance network that conducted BSI surveillance in COVID-19 and non-COVID-19 ICUs during and before the COVID-19 pandemic periods. Hospitals identified healthcare-associated candidaemia and central line associated candidaemia and reported clinical and microbiological data to the network as per established and previously published protocols., Results: A total of 401,601 patient days and 126,051 central line days were reported during the study period. A total of 377 events of candidaemia were recorded. The overall rate of candidaemia in our network was 0.93/1000 patient days. The rate of candidaemia in COVID-19 ICUs (2.52/1000 patient days) was significantly higher than in non-COVID-19 ICUs (1.05/patient days) during the pandemic period. The rate of central line associated candidaemia in COVID-19 ICUs (4.53/1000 central line days) was also significantly higher than in non-COVID-19 ICUs (1.73/1000 central line days) during the pandemic period. Mortality in COVID-19 ICUs associated with candidaemia (61%) was higher than that in non-COVID-19 ICUs (41%). A total of 435 Candida spp. were isolated. C. tropicalis (26.7%) was the most common species. C. auris accounted for 17.5% of all isolates and had a high mortality., Conclusion: Patients in ICUs with COVID-19 infections have a much higher risk of candidaemia, CLAC and its associated mortality. Network level data helps in understanding the true burden of candidaemia and will help in framing infection control policies for the country., (© 2024 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.)
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- 2024
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23. Perception of lean construction implementation barriers in the indian prefabrication sector.
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Negi P, Thakur G, Singh R, Gehlot A, Thakur AK, Gupta LR, Priyadarshi N, and Twala B
- Abstract
Prefabricated construction, increasingly recognized as a sustainable method, enhances productivity while mitigating the drawbacks of traditional approaches. Lean construction, pivotal for sustainability, targets waste reduction and cost efficiency while delivering value to customers. In India's prefabrication sector, numerous barriers impede the implementation of lean principles, necessitating their identification and resolution to advance lean practices. This study aims to identify and analyze primary barriers to implementing lean principles within India's prefabrication industry, focusing on professionals' perceptions. Employing exploratory factor analysis, it examines these barriers' interconnections and causal relationships, providing actionable recommendations for enhanced lean construction effectiveness. Through a review of the literature, 26 significant barriers were identified and primary data was obtained with the help of a questionnaire. 25 barriers were discerned after pre-exploratory factor analysis, culminating in ten common components. Notably, the study highlights a primary barrier: understanding of lean construction. Drawing from expert insights, substantial recommendations are provided, intending to guide the prefabricated building sector in overcoming barriers to on-site lean construction. These findings and recommendations offer valuable direction for industry stakeholders., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Author(s).)
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- 2024
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24. Phenotypic and transcriptomics characterization uncovers genes underlying tuber yield traits and gene expression marker development in potato under aeroponics.
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Zinta R, Tiwari JK, Buckseth T, Goutam U, Singh RK, Thakur AK, Singh S, Kumar V, and Kumar M
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- Gene Ontology, Sequence Analysis, RNA, Genes, Plant genetics, Plant Leaves genetics, Plant Leaves growth & development, Genetic Markers genetics, Solanum tuberosum genetics, Solanum tuberosum growth & development, Plant Tubers genetics, Plant Tubers growth & development, Gene Expression Regulation, Plant, Phenotype, Gene Expression Profiling, Transcriptome
- Abstract
Main Conclusion: Transcriptome analysis in potato varieties revealed genes associated with tuber yield-related traits and developed gene expression markers. This study aimed to identify genes involved in high tuber yield and its component traits in test potato varieties (Kufri Frysona, Kufri Khyati, and Kufri Mohan) compared to control (Kufri Sutlej). The aeroponic evaluation showed significant differences in yield-related traits in the varieties. Total RNA sequencing was performed using tuber and leaf tissues on the Illumina platform. The high-quality reads (QV > 25) mapping with the reference potato genomes revealed statistically significant (P < 0.05) differentially expressed genes (DEGs) into two categories: up-regulated (> 2 Log
2 fold change) and down-regulated (< -2 Log2 fold change). DEGs were characterized by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Collectively, we identified genes participating in sugar metabolism, stress response, transcription factors, phytohormones, kinase proteins, and other genes greatly affecting tuber yield and its related traits. A few selected genes were UDP-glucose glucosyltransferase, glutathion S-transferase, GDSL esterase/lipase, transcription factors (MYB, WRKY, bHLH63, and BURP), phytohormones (auxin-induced protein X10A, and GA20 oxidase), kinase proteins (Kunitz-type tuber invertase inhibitor, BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1) and laccase. Based on the selected 17 peptide sequences representing 13 genes, a phylogeny tree and motifs were analyzed. Real time-quantitative polymerase chain reaction (RT-qPCR) analysis was used to validate the RNA-seq results. RT-qPCR based gene expression markers were developed for the genes such as 101 kDa heat shock protein, catechol oxidase B chloroplastic, cysteine protease inhibitor 1, Kunitz-type tuber invertase inhibitor, and laccase to identify high yielding potato genotypes. Thus, our study paved the path for potential genes associated with tuber yield traits in potato under aeroponics., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2024
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25. Effect of Capsaicin on 3-NP-Induced Neurotoxicity: A Pre-Clinical Study.
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Tyagi S and Thakur AK
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- Animals, Mice, Male, Oxidative Stress drug effects, Mitochondria drug effects, Mitochondria metabolism, Cell Line, Tumor, Huntington Disease drug therapy, Huntington Disease metabolism, Huntington Disease chemically induced, Capsaicin pharmacology, Nitro Compounds toxicity, Neuroprotective Agents pharmacology, Neuroprotective Agents therapeutic use, Propionates toxicity
- Abstract
The study objectives are to investigate the ability of capsaicin to revert the toxic effects in glutamate and lipopolysaccharide (LPS)-induced neurotoxicity in Neuro2a (N2a) cells as well as thwarting cognitive impairments, mitochondrial deficits, and oxidative insults induced by 3-nitropropanoic acid (3-NP) in a rodent model of Huntington's disease. In-vitro study with N2a cells was performed through MTT and LDH assay and their biochemical examinations were also performed. 3-NP-administered mice (n = 6) were treated with capsaicin (5, 10, and 20 mg/kg) through the per-oral (p.o.) route for 7 consecutive days. Physiological and behavioral studies were performed in drug-treated mice. After behavioral studies, biochemical parameters were performed for cytokines levels, various oxidative stress parameters, and mitochondrial enzyme complex activities with mitochondrial permeability. N2a cells treated with capsaicin demonstrated neuroprotective effects and reduced neurotoxicity. Based on experimental observation, in an in-vitro study, the effective dose of CAP was 50 µM. Moreover, a 100 µM dose of capsaicin had toxic effects on neuronal cells (N2a cells). On the other hand, the effective dose of 3-NP was 20 mg/kg, (p.o.) in animals (in-vivo). All tested doses of capsaicin upturned the cognitive impairment and motor in-coordination effects induced by 3-NP. 3-NP-injected mice demonstrated substantially increased pro-inflammatory cytokine concentrations, defective mitochondrial complex activity, and augmented oxidative insult. However, capsaicin at different doses reduced oxidative damage and cytokines levels and improved mitochondrial complex activity along with mitochondrial permeability. Furthermore, capsaicin (10 and 20 mg/kg) improved the TNF-α concentration. These findings suggested because of the anti-inflammatory and antioxidant effect, capsaicin can be considered a novel treatment for the management of neurodegenerative disorders by reverting the antioxidant enzyme activity, pro-inflammatory cytokines concentration, and mitochondrial functions., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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26. Transcriptome analysis reveals genes associated with late blight resistance in potato.
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Bhatia N, Tiwari JK, Kumari C, Zinta R, Sharma S, Buckseth T, Thakur AK, Singh RK, and Kumar V
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- Plant Proteins genetics, Transcriptome, Genes, Plant, Genotype, Solanum tuberosum genetics, Solanum tuberosum microbiology, Solanum tuberosum immunology, Disease Resistance genetics, Plant Diseases genetics, Plant Diseases microbiology, Gene Expression Regulation, Plant, Gene Expression Profiling
- Abstract
Late blight is a serious disease of potato worldwide. Our study aimed to unveil genes involved in late blight resistance in potato by RNA-seq analysis after artificial inoculation under controlled conditions. In this study, two potato somatic hybrids (P7 and Crd6) and three varieties such as Kufri Girdhari, Kufri Jyoti and Kufri Bahar (control) were used. Transcriptiome analysis revealed statistically significant (p < 0.05) differentially expressed genes (DEGs), which were analysed into up-regulated and down-regulated genes. Further, DEGs were functionally characterized by the Gene Ontology annotations and the Kyoto Encyclopedia of Genes and Genomes pathways. Overall, some of the up-regulated genes in resistant genotypes were disease resistance proteins such as CC-NBS-LRR resistance protein, ankyrin repeat family protein, cytochrome P450, leucine-rich repeat family protein/protein kinase family, and MYB transcription factor. Sequence diversity analysis based on 38 peptide sequences representing 18 genes showed distinct variation and the presence of three motifs in 15 amino acid sequences. Selected genes were also validated by real-time quantitative polymerase chain reaction analysis. Interestingly, gene expression markers were developed for late blight resistant genotypes. Our study elucidates genes involved in imparting late blight resistance in potato, which will be beneficial for its management strategies in the future., (© 2024. The Author(s).)
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- 2024
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27. Evaluation of the protective effect of capric acid on behavioral and biochemical alterations in valproic acid-induced model of autism.
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Shekhar N and Thakur AK
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- Animals, Male, Behavior, Animal drug effects, Decanoic Acids pharmacology, Female, Rats, Rats, Wistar, Brain drug effects, Brain metabolism, Valproic Acid pharmacology, Autistic Disorder chemically induced, Autistic Disorder drug therapy, Autistic Disorder metabolism, Disease Models, Animal, Neuroprotective Agents pharmacology, Neuroprotective Agents therapeutic use, Oxidative Stress drug effects
- Abstract
Aim and Objective: The purpose of the study is to determine the neuroprotective effect of capric acid on sodium valproate-induced model of autism., Methods: In this study, the effect of CA was observed in animals with single dose of valproic acid (600 mg/kg, i. p.) where the disease condition was confirmed by developmental impairment in pups. Behavioral tests that assess anxiety, depression, stereotypical and repetitive behavior, social interaction, learning and memory, and other confounding variables were performed. Subsequently, oxidative stress parameters, pro-inflammatory cytokine levels and mitochondrial complex activities in the selected brain regions were analyzed., Results: Valproic acid successfully produced autism-like symptoms from post-natal day 7 and also demonstrated impairment in social behavior, learning and memory, and anxiety and depression. Valproic acid was found to produce oxidative stress and neuro-inflammation in the hippocampus, prefrontal cortex, and cerebellum. Treatment with capric acid produced a positive effect on the alterations with maximum effects evident at 400 mg/kg, p. o. through amelioration of behavioral as well as biochemical changes., Conclusion: The current study concluded that capric acid could act as a likely candidate for the treatment and management of autism via significant modulation of neurobehavioral parameters, oxidative stress, mitochondrial dysfunction and inflammatory markers., Competing Interests: Declaration of competing interest The authors have no relevant financial or non-financial interests to disclose., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
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- 2024
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28. Substantially altered bacterial diversity associated with developmental stages of litchi stink bug, Tessaratoma javanica (Thunberg) (Hemiptera: Tessaratomidae).
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Kumari A, Choudhary JS, Thakur AK, Banra S, Oraon PK, Kumari K, Sahu SK, and Albeshr MF
- Abstract
The mutualistic symbiotic relationship between insects and bacteria greatly influences the growth and development of host insects. Tessaratoma javanica (Thunberg) (Hemiptera: Tessaratomidae), also referred to as the litchi stink bug, has recently been established as an important insect pest of Litchi chinensis Sonn. and causes substantial yield loss in India. To design effective and environmentally safe management strategies, an understanding of the diversity and functions of microbiota harbored across the development stages is very important. The assessment of the diversity of development-associated bacteria in T. javanica and their predicted functions was conducted using 16S rRNA gene sequences obtained by the Illumina MiSeq technology. The result showed that taxonomic analysis of associated bacteria in different developmental stages includes a total of 46 phyla, encompassing 139 classes, 271 orders, 474 families, and 893 genera of bacteria. All developmental stages of T. javanica shared a total of 42.82 percent of operational taxonomic units (OTUs), with a 97 % similarity threshold. Alpha diversity indices showed maximum species richness in the egg and adult stages. The phyla Proteobacteria followed by Firmicutes, Bacteriodetes, and Actinobacteria, exhibited the highest levels of abundance across all the developmental stages of T. javanica . Microbiota were most different between the egg and the 4th nymphal stage (χ2 = 711.67) and least different between the 2nd and 4th nymphal instars (χ2 = 44.45). The predicted functions of the microbiota associated with T . javanica are mainly involved in amino acid metabolism, cell motility, cellular processes and signaling, glycan biosynthesis and metabolism, lipid metabolism, and membrane transport. The present study documentation and information on symbiotic bacteria across T. javanica life stages will prompt the development of novel biological management strategies., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)
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- 2024
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29. KASP: a high-throughput genotyping system and its applications in major crop plants for biotic and abiotic stress tolerance.
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Dipta B, Sood S, Mangal V, Bhardwaj V, Thakur AK, Kumar V, and Singh B
- Subjects
- Genotype, Alleles, Reproducibility of Results, Phenotype, Polymorphism, Single Nucleotide genetics, Plant Breeding, Plants genetics
- Abstract
Advances in plant molecular breeding have resulted in the development of new varieties with superior traits, thus improving the crop germplasm. Breeders can screen a large number of accessions without rigorous and time-consuming phenotyping by marker-assisted selection (MAS). Molecular markers are one of the most imperative tools in plant breeding programmes for MAS to develop new cultivars possessing multiple superior traits. Single nucleotide polymorphisms (SNPs) are ideal for MAS due to their low cost, low genotyping error rates, and reproducibility. Kompetitive Allele Specific PCR (KASP) is a globally recognized technology for SNP genotyping. KASP is an allele-specific oligo extension-based PCR assay that uses fluorescence resonance energy transfer (FRET) to detect genetic variations such as SNPs and insertions/deletions (InDels) at a specific locus. Additionally, KASP allows greater flexibility in assay design, which leads to a higher success rate and the capability to genotype a large population. Its versatility and ease of use make it a valuable tool in various fields, including genetics, agriculture, and medical research. KASP has been extensively used in various plant-breeding applications, such as the identification of germplasm resources, quality control (QC) analysis, allele mining, linkage mapping, quantitative trait locus (QTL) mapping, genetic map construction, trait-specific marker development, and MAS. This review provides an overview of the KASP assay and emphasizes its validation in crop improvement related to various biotic and abiotic stress tolerance and quality traits., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
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- 2024
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30. Evaluation of Pharmacokinetic and Pharmacodynamic (PK/PD) of Novel Fluorenylmethoxycarbonyl- Phenylalanine Antimicrobial Agent.
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Gahane AY, Verma DP, Sarkar S, and Thakur AK
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- Animals, Mice, Chromatography, High Pressure Liquid, Bacteria, Biological Availability, Phenylalanine pharmacology, Anti-Bacterial Agents pharmacology
- Abstract
Objective: To assess the pharmacokinetic profile, in-vivo toxicity, and efficacy of 9-Fluorenylmethoxycarbonyl-L-phenylalanine (Fmoc-F) as a potential antibacterial agent, with a focus on its suitability for clinical translation., Methods: An RP-HPLC-based bio-analytical method was developed and qualified to quantify Fmoc-F levels in mouse plasma for pharmacokinetic analysis. Oral bioavailability was determined, and in-vivo toxicity was evaluated following intra-peritoneal administration. Efficacy was assessed by measuring the reduction in Staphylococcus aureus burden and survival rates in BALB/c mice., Results: The RP-HPLC method is highly sensitive, detecting as low as 0.8 µg mL-1 (~ 2 µM) of Fmoc-F in blood plasma. This study revealed that Fmoc-F has an oral bioavailability of 65 ± 18% and suitable pharmacokinetic profile. Further, we showed that intra-peritoneal administration of Fmoc-F is well tolerated by BALB/c mice and Fmoc-F treatment (100 mg/kg, i.p.) significantly reduces Staphylococcus aureus burden from visceral organs in BALB/c mice but falls short in enhancing survival rates at higher bacterial loads., Conclusions: The study provides crucial insights into the pharmacokinetic and pharmacodynamic properties of Fmoc-F. The compound displayed favourable oral bioavailability and in-vivo tolerance. Its significant reduction of bacterial burden underscores its potential as a treatment for systemic infections. However, limited effectiveness for severe infections, short half-life, and inflammatory response at higher doses need to be addressed for its clinical application., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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31. Transcriptome profiling and characterization of genes associated with tuberization under high temperature in aeroponics in potato cv. Kufri Anand.
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Zinta R, Tiwari JK, Buckseth T, Goutam U, Singh RK, Kumar V, and Thakur AK
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- Temperature, Gene Expression Profiling, Transcriptome, Genotype, Solanum tuberosum genetics, Solanum tuberosum metabolism
- Abstract
Background: High temperature stress is an important abiotic factor, which affects tuberization and ultimately causes heavy yield reduction in potato., Objectives: Identification and characterization of genes associated with tuberization under high temperature stress is essential for future management through biotechnology., Methodology: Two contrasting potato varieties Kufri Anand (profuse tuber-bearing) versus Kufri Frysona (very less/scanty tuber-bearing, control) were cultivated in aeroponics under high temperature stress, and transcriptomes were analyzed., Results: Potato cv. Kufri Anand was found superior over control (Kufri Frysona) for tuber yield and its component traits along with root morphology under aeroponics. Transcriptomes of tuber and leaf tissues were analyzed. Statistically significant (p < 0.05) differentially expressed genes (DEGs) were categorised into up-regulated (> 2 log
2 fold change, FC) and down-regulated (< -2 log2 FC) genes. DEGs were annotated by gene ontology and KEGG pathways. A few selected up-regulated genes of both tissues were identified, and phylogeny tree and motif analysis were analysed based on 36 peptide sequences representing 15 selected DEGs in this study. Further, gene expression markers were developed and validated by real time qPCR analysis for the identification of high temperature tolerant genotypes., Conclusion: A few key genes associated in tuberization under high temperature conditions were heat shock proteins (e.g. 18.5 kDa class I heat shock protein), sugar metabolism (e.g. glucosyltransferase), transcription factor (e.g. WRKY), and phytohormones (e.g. auxin-induced beta-glucosidase). Our study provides an overview of key genes involved in tuberization under high temperature stress in potato cv. Kufri Anand under aeroponics., (© 2024. The Author(s) under exclusive licence to The Genetics Society of Korea.)- Published
- 2024
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32. Manganese Carbonate/Laser-Induced Graphene Composite for Glucose Sensing.
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Thakur AK, Sengodu P, Jadhav AH, and Malmali M
- Abstract
Laser-induced graphene (LIG) has received great interest as a potential candidate for electronic and sensing applications. In the present study, we report the enhanced performance of a manganese carbonate-decorated LIG (MnCO
3 /LIG) composite electrode material employed for electrochemical glucose detection. Initially, the porous LIG was fabricated by directly lasing poly(ether sulfone) membrane substrate. Then, the MnCO3 /LIG composite was synthesized via a hydrothermal method. Later, MnCO3 /LIG was immobilized onto a glassy carbon electrode surface and employed for glucose detection. The structure of the MnCO3 /LIG composite was carefully characterized. The influence of the MnCO3 /LIG composite on the performance of the electrode was investigated using cyclic voltammetry curves. The MnCO3 /LIG composite exhibited an excellent sensitivity of 2731.2 μA mM-1 cm-2 , and a limit of detection of 2.2 μM was obtained for the detection of glucose. Overall, the performance of the MnCO3 /LIG composite was found to be superior to that of most of the MnCO3 -based composites., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Published by American Chemical Society.)- Published
- 2024
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33. Alternative Approaches for the Management of Huntington's Disease: A Narrative Review.
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Tyagi S, Shekhar N, and Thakur AK
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- Humans, Exercise, Huntington Disease diagnosis, Huntington Disease drug therapy, Neurodegenerative Diseases, Cognitive Dysfunction
- Abstract
Huntington's disease (HD) is an autosomal neurodegenerative disease that involves movement disorders, cognitive impairments, and psychiatric symptoms. It is characterized by regionally selective cortical degeneration that proceeds from posterior to anterior cortical region which explains its heterogeneity. At present, the psychiatric symptoms of HD are mostly managed by antidepressant such as selective serotonin reuptake inhibitors or selective nor-epinephrine reuptake inhibitors, and atypical antipsychotics. Currently, there are no efficient pharmacological treatment available for HD. Thus, in order to avoid this void in effective pharmacotherapy, further supplemental and alternative approaches are being explored for the management of problems associated with HD. A literature review was performed using the databases PubMed and Google Scholar identifying clinical studies that were set to ameliorate the symptoms associated with HD. On critical analysis, it was found that alternative treatment modalities like music therapy, video games, Yoga, Physical therapy, and exercise-based programs have a potential and possible role in improving the symptoms of HD at varied degrees.
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- 2024
34. Potential of ionic liquids as emerging green solvent for the pretreatment of lignocellulosic biomass.
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Swami S, Suthar S, Singh R, Thakur AK, Gupta LR, and Sikarwar VS
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- Solvents chemistry, Biomass, Lignin chemistry, Renewable Energy, Hydrolysis, Ionic Liquids chemistry
- Abstract
Lignocellulosic biomass is available in abundance as a renewable resource, but the major portion of it is often discarded as waste without utilizing its immense potential as an alternative renewable energy resource. To overcome recalcitrance of lignocellulosic biomass, various pretreatment methods are applied to it, so that the complex and rigid polymeric structure can be broken down into fractions susceptible for enzymatic hydrolysis. Effective and efficient biomass processing is the goal of pretreatment methods, but none of the explored pretreatment methods are versatile enough to fulfil the requirement of biomass processing with greater flexibility in terms of operational cost and desired output efficiency. Deployment of green solvents such as ionic liquids for the pretreatment of lignocellulosic biomass has been a topic of discussion amongst the scientific community in recent times. The presented work provides a detailed overview on the deployment of ionic liquid for the pretreatment of lignocellulosic biomass coupled with a brief discussion on other pretreatments methods. The recyclability and reusability along with other unique properties makes an ionic liquid pretreatment different from the other traditional pretreatment methods. Also, this study explores diverse critical parameters that governs the dissolution process of biomass. Hazardous properties of ionic liquids have also been explored. Future perspective and recommendations have been given for an efficient, effective, and eco-friendly deployment of ionic liquid in biomass pretreatment process., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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35. A Review on CNTs-Based Electrochemical Sensors and Biosensors: Unique Properties and Potential Applications.
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Meskher H, Ragdi T, Thakur AK, Ha S, Khelfaoui I, Sathyamurthy R, Sharshir SW, Pandey AK, Saidur R, Singh P, Sharifian Jazi F, and Lynch I
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- Humans, Molecularly Imprinted Polymers chemistry, Biosensing Techniques instrumentation, Biosensing Techniques methods, Electrochemical Techniques instrumentation, Nanotubes, Carbon chemistry
- Abstract
Carbon nanotubes (CNTs), are safe, biocompatible, bioactive, and biodegradable materials, and have sparked a lot of attention due to their unique characteristics in a variety of applications, including medical and dye industries, paper manufacturing and water purification. CNTs also have a strong film-forming potential, permitting them to be widely employed in constructing sensors and biosensors. This review concentrates on the application of CNT-based nanocomposites in the production of electrochemical sensors and biosensors. It emphasizes the synthesis and optimization of CNT-based sensors for a range of applications and outlines the benefits of using CNTs for biomolecule immobilization. In addition, the use of molecularly imprinted polymer (MIP)-CNTs in the production of electrochemical sensors is also discussed. The challenges faced by the current CNTs-based sensors, along with some the future perspectives and their future opportunities, are also briefly explained in this paper.
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- 2024
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36. Advances in phase change materials and nanomaterials for applications in thermal energy storage.
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Kumar R, Thakur AK, Gupta LR, Gehlot A, and Sikarwar VS
- Subjects
- Hot Temperature, Temperature, Nanostructures, Nanoparticles, Body Fluids
- Abstract
Phase-changing materials are nowadays getting global attention on account of their ability to store excess energy. Solar thermal energy can be stored in phase changing material (PCM) in the forms of latent and sensible heat. The stored energy can be suitably utilized for other applications such as space heating and cooling, water heating, and further industrial processing where low-temperature heat energy is required. The presented work attempts to evaluate past, present, and future trends in the development of energy storage materials and their encapsulation techniques for efficient utilization of the available energy. Hybrid PCM with nanoparticles has excellent potential to tailor thermo-physical properties and uplift the efficiency of energy storage systems. Synergistic use of PCM with nanomicromaterial can further improve the capacity of energy storage system along with the charging and discharging efficiencies of the system. Impacts of the size of particle, concentration ratio, and shape of particle have been studied to assess their effectiveness in enhancing storage efficiency of the systems. Waste heat recovered and stored in energy storage materials can undoubtedly improve the total energy availability of the source, thus enhancing the exergy efficiency with simultaneous reduction in the entropy generation rate. Core-shell nanoparticles can further improve the optical absorptance spectra towards an infrared region of thermal energy. Paraffin wax-based NEPCMs with graphene nanoplatelets achieve 2.14 W/(m·K) thermal conductivity, enabling faster and more efficient heat transmission and lowering charging and discharging times for thermal storage devices., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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37. Oxyanion Removal from Impaired Water by Donnan Dialysis Plug Flow Contactors.
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Fox S, Stadnik K, Thakur AK, Farkash L, Ronen Z, Oren Y, and Gilron J
- Abstract
In the last twenty-five years, extensive work has been done on ion exchange membrane bioreactors (IEMB) combining Donnan dialysis and anaerobic reduction to remove trace oxyanions (e.g., perchlorate, nitrate, chlorate, arsenate) from contaminated water sources. Most studies used Donnan dialysis contactors with high recirculation rates on the feed side, so under continuous operation, the effective concentration on the feed side of the membrane is the same as the exit concentration (CSTR mode). We have built, characterized, and modelled a plug flow Donnan dialysis contactor (PFR) that maximizes concentration on the feed side and operated it on feed solutions spiked with perchlorate and nitrate ion using ACS and PCA-100 anion exchange membranes. At identical feed inlet concentrations with the ACS membrane, membrane area loading rates are three-fold greater, and fluxes are more than double in the PFR contactor than in the CSTR contactor. A model based on the nonlinear adsorption of perchlorate in ACS membrane correctly predicted the trace ion concentration as a function of space-time in experiments with ACS. For PCA membrane, a linear flux dependence on feed concentration correctly described trace ion feed concentration as a function of space-time. Anion permeability for PCA-100 was high enough that the overall mass transfer was affected by the film boundary layer resistance. These results provide a basis for efficiently scaling up Donnan dialysis contactors and incorporating them in full-scale IEMB setups.
- Published
- 2023
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38. Utilization of crop wild relatives for biotic and abiotic stress management in Indian mustard [ Brassica juncea (L.) Czern. & Coss.].
- Author
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Verma S, Dubey N, Singh KH, Parmar N, Singh L, Sharma D, Rana D, Thakur K, Vaidya D, and Thakur AK
- Abstract
Brassica juncea (L.) Czern. & Coss. (Indian mustard) is an economically important edible oil crop. Over the years, plant breeders have developed many elite varieties of B. juncea with better yield traits, but research work on the introgression of stress resilience traits has largely been lagging due to scarcity of resistant donors. Crop wild relatives (CWRs) are the weedy relatives of domesticated plant species which are left unutilized in their natural habitat due to the presence of certain undesirable alleles which hamper their yield potential, and thus, their further domestication. CWRs of B. juncea namely include Sinapis alba L. (White mustard), B. tournefortii Gouan. (African mustard), B. fruticulosa Cirillo (Twiggy turnip), Camelina sativa L. (Gold-of-pleasure), Diplotaxis tenuisiliqua Delile (Wall rocket), D. erucoides L. (White wall rocket), D. muralis L. (Annual wall rocket), Crambe abyssinica R.E.Fr. (Abyssinian mustard), Erucastrum gallicum Willd. (Common dogmustard), E. cardaminoides Webb ex Christ (Dogmustard), Capsella bursa - pastoris L. (Shepherds purse), Lepidium sativum L. (Garden Cress) etc. These CWRs have withstood several regimes of biotic and abiotic stresses over the past thousands of years which led them to accumulate many useful alleles contributing in resistance against various environmental stresses. Thus, CWRs could serve as resourceful gene pools for introgression of stress resilience traits into Indian mustard. This review summarizes research work on the introgression of resistance against Sclerotinia stem rot (caused by Sclerotinia sclerotiorum ), Alternaria blight (caused by Alternaria brassicae ), white rust (caused by Albugo candida ), aphid attack, drought and high temperature from CWRs into B. juncea . However, various pre- and post-fertilization barriers due to different ploidy levels are major stumbling blocks in the success of such programmes, therefore, we also insightfully discuss how the advances made in -omics technology could be helpful in assisting various breeding programmes aiming at improvisation of stress resilience traits in B. juncea ., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Verma, Dubey, Singh, Parmar, Singh, Sharma, Rana, Thakur, Vaidya and Thakur.)
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- 2023
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39. A Rare Case of Persistent Left Superior Vena Cava Coexisting With Valvulopathies and Complete Heart Block.
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Paudyal S, Thakur AK, Abdelkarim AZ, and Zakir FA
- Abstract
Persistent left superior vena cava (PLSVC) is a rare congenital vascular anomaly that is often detected incidentally during cardiovascular imaging or interventions. Coexisting PLSVC with mitral regurgitation (MR), aortic stenosis (AS), aortic regurgitation (AR), and complete heart block (CHB) are exceptionally rare and have not been reported in the literature to our knowledge. We present the case of a 50-year-old male with PLSVC coexisting with severe MR, mild AS/AR, and CHB who successfully underwent permanent pacemaker (PPM) implantation and mitral valve replacement. Comprehensive diagnostic evaluation and tailored management strategies are crucial for achieving significant improvement in the patient's symptoms. The presence of PLSVC adds complexity to diagnosis and management, necessitating multidisciplinary collaboration for optimal patient care., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Paudyal et al.)
- Published
- 2023
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40. Correction: Recent trends in carbon nanotube (CNT)-based biosensors for the fast and sensitive detection of human viruses: a critical review.
- Author
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Meskher H, Mustansar HC, Thakur AK, Sathyamurthy R, Lynch I, Singh P, Han TK, and Saidur R
- Abstract
[This corrects the article DOI: 10.1039/D2NA00236A.]., (This journal is © The Royal Society of Chemistry.)
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- 2023
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41. A critical review on sustainable hazardous waste management strategies: a step towards a circular economy.
- Author
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Kumar A, Thakur AK, Gaurav GK, Klemeš JJ, Sandhwar VK, Pant KK, and Kumar R
- Subjects
- Hazardous Waste, Public Health, Policy, Safety Management, Recycling, Solid Waste, Waste Management methods
- Abstract
Globally, industrialisation and urbanisation have led to the generation of hazardous waste (HW). Sustainable hazardous waste management (HWM) is the need of the hour for a safe, clean, and eco-friendly environment and public health. The prominent waste management strategies should be aligned with circular economic models considering the economy, environment, and efficiency. This review critically discusses HW generation and sustainable management with the strategies of prevention, reduction, recycling, waste-to-energy, advanced treatment technology, and proper disposal. In this regard, the major HW policies, legislations, and international conventions related to HWM are summarised. The global generation and composition of hazardous industrial, household, and e-waste are analysed, along with their environmental and health impacts. The paper critically discusses recently adapted management strategies, waste-to-energy conversion techniques, treatment technologies, and their suitability, advantages, and limitations. A roadmap for future research focused on the components of the circular economy model is proposed, and the waste management challenges are discussed. This review stems to give a holistic and broader picture of global waste generation (from many sources), its effects on public health and the environment, and the need for a sustainable HWM approach towards the circular economy. The in-depth analysis presented in this work will help build cost-effective and eco-sustainable HWM projects., (© 2023. The Author(s).)
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- 2023
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42. Protein reservoirs of seeds are amyloid composites employed differentially for germination and seedling emergence.
- Author
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Sinha N, Zahra T, Gahane AY, Rout B, Bhattacharya A, Basu S, Chakrabarti A, and Thakur AK
- Abstract
Seed protein localization in seed storage protein bodies (SSPB) and their significance in germination are well recognized. SSPB are spherical and contain an assembly of water-soluble and salt-soluble proteins. Although the native structures of some SSPB proteins are explored, their structural arrangement to the functional correlation in SSPB remains unknown. SSPB are morphologically analogous to electron-dense amyloid-containing structures reported in other organisms. Here, we show that wheat, mungbean, barley, and chickpea SSPB exhibit a speckled pattern of amyloids interspersed in an amyloid-like matrix along with native structures, suggesting the composite nature of SSPB. This is confirmed by multispectral imaging methods, electron microscopy, infrared, and X-ray diffraction analysis, using in situ tissue sections, ex vivo protoplasts, and in vitro SSPB. Laser capture microdissection coupled with peptide fingerprinting has shown that globulin 1 and 3 in wheat, and 8S globulin and conglycinin in mungbean are the major amyloidogenic proteins. The amyloid composites undergo a sustained degradation during germination and seedling growth, facilitated by an intricate interplay of plant hormones and proteases. These results would lay down the foundation for understanding the amyloid composite structure during SSPB biogenesis and its evolution across the plant kingdom and have implications in both basic and applied plant biology., (© 2023 Society for Experimental Biology and John Wiley & Sons Ltd.)
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- 2023
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43. Screening of wild species and transcriptome profiling to identify differentially regulated genes in response to late blight resistance in potato.
- Author
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Bhatia N, Tiwari JK, Kumari C, Zinta R, Sharma S, Thakur AK, Buckseth T, Dalamu D, Singh RK, and Kumar V
- Abstract
Late blight ( Phytophthora infestans ) is a serious disease of potatoes. The aim of this study was to screen wild potato species and identify differentially expressed genes (DEGs) associated with late blight resistance. Wild potato species such as PIN45 ( Solanum pinnatisectum ), CPH62 ( Solanum cardiophyllum ), JAM07 ( Solanum jamesii ), MCD24 ( Solanum microdontum ), PLD47 ( Solanum polyadenium ), and cv. Kufri Bahar (control) were tested by artificial inoculation of P. infestans under controlled conditions. Transcriptomes of the leaf tissues (96 h post-inoculation) were sequenced using the Illumina platform. Statistically significant ( p < 0.05) DEGs were analyzed in wild species by comparison with the control, and upregulated (>2 log
2 fold change, FC) and downregulated (<-2 log2 FC) genes were identified. DEGs were functionally characterized with Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Selected genes were validated by real-time PCR analysis to confirm RNA-seq results. We identified some upregulated genes associated with late blight resistance in wild species such as cytochrome P450, proline-rich protein, MYB transcription factor MYB139, ankyrin repeat-containing protein, and LRR receptor-like serine/threonine-protein kinase in PIN45; glucosyltransferase, fructose-bisphosphate aldolase, and phytophthora-inhibited protease 1 in CPH62; steroid binding protein and cysteine proteinase 3 in JAM07; glycine-rich cell wall structural protein 1 and RING finger protein in MCD24; and cysteine proteinase 3 and major latex protein in PLD47. On the other hand, downregulated genes in these species were snakin-2 and WRKY transcription factor 3 in PIN45; lichenase and phenylalanine ammonia-lyase 1 in CPH62; metallothionein and LRR receptor-like serine/threonine-protein kinase in JAM07; UDP-glucoronosyl/UDP-glucosyl transferase family protein and steroid binding protein in MCD24; and cytoplasmic small heat shock protein class I and phosphatase PLD47. Our study identified highly resistant wild potato species and underlying genes such as disease resistance, stress response, phytohormones, and transcription factors (e.g., MYB, WRKY, AP2/ERF, and AN1) associated with late blight resistance in wild potato species., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Bhatia, Tiwari, Kumari, Zinta, Sharma, Thakur, Buckseth, Dalamu, Singh and Kumar.)- Published
- 2023
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44. CRISPR/Cas9-mediated editing of phytoene desaturase ( PDS ) gene in an important staple crop, potato.
- Author
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Siddappa S, Sharma N, Salaria N, Thakur K, Pathania S, Singh B, Sharma H, Sood S, Bhardwaj V, Thakur AK, Mangal V, Kumar V, Muruthachallam R, Singh K, and Tuli R
- Abstract
The gene editing using the CRISPR/Cas9 system has become an important biotechnological tool for studying gene function and improving crops. In this study, we have used CRISPR/Cas9 system for editing the phytoene desaturase gene ( PDS ) in popular Indian potato cultivar Kufri Chipsona-I. A construct (pHSE401) carrying two target gRNAs with glycine tRNA processing system under the control of Arabidopsis U6 promoter and the Cas9 protein was constructed and transformed in potato plants using Agrobacterium -mediated genetic transformations. The regeneration efficiency of 45% was observed in regenerated plants, out of which 81% of the putative transformants shoot lines exhibited mutant or bleached phenotype (albinism). The deletion mutations were detected within the StPDS gene in the genotyped plants and a mutation efficiency of 72% for gRNA1 and gRNA2 has been detected using Sanger sequencing. Hence, we set up a CRISPR/Cas9-mediated genome editing protocol which is efficient and generates mutations (deletions) within StPDS gene in potato. The bleached phenotype is easily detectable after only few weeks after Agrobacterium- mediated transformation. This is the first report as a proof of concept for CRISPR/Cas9-based editing of PDS gene in Indian potato cv. Kufri Chipsona-I. This study demonstrates that CRISPR/Cas9 can be used to edit genes at high frequency within the genome of the potato for various traits. Therefore, this study will aid in creating important mutants for modifying molecular mechanisms controlling traits of agronomic importance., Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest., (© King Abdulaziz City for Science and Technology 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
- Published
- 2023
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45. Performance evaluation of external compound parabolic concentrator integrated with thermal storage tank for domestic solar refrigeration system.
- Author
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Christopher SS, Thakur AK, Hazra SK, Sharshir SW, Pandey AK, Rahman S, Singh P, Sunder LS, Raj AK, Dhivagar R, and Sathyamurthy R
- Subjects
- Refrigeration, India, Cold Temperature, Water, Body Fluids, Solar Energy
- Abstract
The aim of this research was to develop a model for a solar refrigeration system (SRS) that utilizes an External Compound Parabolic Collector and a thermal energy storage system (TESS) for solar water heating in Chennai, India. The system parameters were optimized using TRNSYS software by varying factors such as collector area, mass flow rate of heat transfer fluid, and storage system volume and height. The resulting optimized system was found to meet 80% of hot water requirements for the application on an annual basis, with an annual collector energy efficiency of 58% and an annual TESS exergy efficiency of 64% for a discharge period of 6 h per day. In addition, the thermal performance of 3.5 kW SRS was studied by connecting it to an optimized solar water heating system (SWHS). The system was found to generate an average cooling energy of 12.26 MJ/h annually, with a coefficient of performance of 0.59. By demonstrating the ability to efficiently generate both hot water and cooling energy, the results of this study indicate the potential for utilizing a SWHS in combination with STST and SRS. The optimization of system parameters and the use of exergy analysis provide valuable insights into the thermal behavior and performance of the system, which can inform future designs and improve the overall efficiency of similar systems., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2023
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46. Synthetic Multivalent Disulfide-Constrained Peptide Agonists Potentiate Wnt1/β-Catenin Signaling via LRP6 Coreceptor Clustering.
- Author
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Thakur AK, Miller SE, Liau NPD, Hwang S, Hansen S, de Sousa E Melo F, Sudhamsu J, and Hannoush RN
- Subjects
- Ligands, beta Catenin metabolism, Protein Binding, Wnt Signaling Pathway, Peptides pharmacology, Peptides metabolism, Wnt Proteins metabolism, Low Density Lipoprotein Receptor-Related Protein-6 metabolism
- Abstract
Wnt ligands are critical for tissue homeostasis and form a complex with LRP6 and frizzled coreceptors to initiate Wnt/β-catenin signaling. Yet, how different Wnts achieve various levels of signaling activation through distinct domains on LRP6 remains elusive. Developing tool ligands that target individual LRP6 domains could help elucidate the mechanism of Wnt signaling regulation and uncover pharmacological approaches for pathway modulation. We employed directed evolution of a disulfide constrained peptide (DCP) to identify molecules that bind to the third β-propeller domain of LRP6. The DCPs antagonize Wnt3a while sparing Wnt1 signaling. Using PEG linkers with different geometries, we converted the Wnt3a antagonist DCPs to multivalent molecules that potentiated Wnt1 signaling by clustering the LRP6 coreceptor. The mechanism of potentiation is unique as it occurred only in the presence of extracellular secreted Wnt1 ligand. While all DCPs recognized a similar binding interface on LRP6, they displayed different spatial orientations that influenced their cellular activities. Moreover, structural analyses revealed that the DCPs exhibited new folds that were distinct from the parent DCP framework they were evolved from. The multivalent ligand design principles highlighted in this study provide a path for developing peptide agonists that modulate different branches of cellular Wnt signaling.
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- 2023
- Full Text
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47. Particle preparation of pharmaceutical compounds using supercritical antisolvent process: current status and future perspectives.
- Author
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Kumar R, Thakur AK, Kali G, Pitchaiah KC, Arya RK, and Kulabhi A
- Subjects
- Solvents chemistry, Solutions, Temperature, Particle Size, Solubility, Carbon Dioxide chemistry, Water
- Abstract
The low aqueous solubility and subsequently slow dissolution rate, as well as the poor bioavailability of several active pharmaceutical ingredients (APIs), are major challenges in the pharmaceutical industry. In this review, the particle engineering approaches using supercritical carbon dioxide (SC CO
2 ) as an antisolvent are critically reviewed. The different SC CO2 -based antisolvent processes, such as the gas antisolvent process (GAS), supercritical antisolvent process (SAS), and a solution-enhanced dispersion system (SEDS), are described. The effect of process parameters such as temperature, pressure, solute concentration, nozzle diameter, SC CO2 flow rate, solvent type, and solution flow rate on the average particle size, particle size distribution, and particle morphology is discussed from the fundamental perspective of the SAS process. The applications of the SAS process in different formulation approaches such as solid dispersion, polymorphs, cocrystallization, inclusion complexation, and encapsulation to enhance the dissolution rate, solubility, and bioavailability are critically reviewed. This review highlights some areas where the SAS process has not been adequately explored yet. This review will be helpful to researchers working in this area or planning to explore SAS process to particle engineering approaches to tackle the challenge of low solubility and subsequently slow dissolution rate and poor bioavailability., (© 2022. Controlled Release Society.)- Published
- 2023
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48. A comprehensive and conceptual overview of omics-based approaches for enhancing the resilience of vegetable crops against abiotic stresses.
- Author
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Mangal V, Lal MK, Tiwari RK, Altaf MA, Sood S, Gahlaut V, Bhatt A, Thakur AK, Kumar R, Bhardwaj V, Kumar V, Singh B, Singh R, and Kumar D
- Subjects
- Plant Breeding, Genomics, Crops, Agricultural, Stress, Physiological genetics, Proteomics, Vegetables
- Abstract
Main Conclusion: Abiotic stresses adversely affect the productivity and production of vegetable crops. The increasing number of crop genomes that have been sequenced or re-sequenced provides a set of computationally anticipated abiotic stress-related responsive genes on which further research may be focused. Knowledge of omics approaches and other advanced molecular tools have all been employed to understand the complex biology of these abiotic stresses. A vegetable can be defined as any component of a plant that is eaten for food. These plant parts may be celery stems, spinach leaves, radish roots, potato tubers, garlic bulbs, immature cauliflower flowers, cucumber fruits, and pea seeds. Abiotic stresses, such as deficient or excessive water, high temperature, cold, salinity, oxidative, heavy metals, and osmotic stress, are responsible for the adverse activity in plants and, ultimately major concern for decreasing yield in many vegetable crops. At the morphological level, altered leaf, shoot and root growth, altered life cycle duration and fewer or smaller organs can be observed. Likewise different physiological and biochemical/molecular processes are also affected in response to these abiotic stresses. In order to adapt and survive in a variety of stressful situations, plants have evolved physiological, biochemical, and molecular response mechanisms. A comprehensive understanding of the vegetable's response to different abiotic stresses and the identification of tolerant genotypes are essential to strengthening each vegetable's breeding program. The advances in genomics and next-generation sequencing have enabled the sequencing of many plant genomes over the last twenty years. A combination of modern genomics (MAS, GWAS, genomic selection, transgenic breeding, and gene editing), transcriptomics, and proteomics along with next-generation sequencing provides an array of new powerful approaches to the study of vegetable crops. This review examines the overall impact of major abiotic stresses on vegetables, adaptive mechanisms and functional genomic, transcriptomic, and proteomic processes used by researchers to minimize these challenges. The current status of genomics technologies for developing adaptable vegetable cultivars that will perform better in future climates is also examined., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2023
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49. Potential of Capric Acid in Neurological Disorders: An Overview.
- Author
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Shekhar N, Tyagi S, Rani S, and Thakur AK
- Subjects
- Animals, Humans, Decanoic Acids metabolism, Fatty Acids metabolism, Mammals metabolism, Diet, Ketogenic, Epilepsy
- Abstract
To solve the restrictions of a classical ketogenic diet, a modified medium-chain triglyceride diet was introduced which required only around 60% of dietary energy. Capric acid (CA), a small molecule, is one of the main components because its metabolic profile offers itself as an alternate source of energy to the brain in the form of ketone bodies. This is possible with the combined capability of CA to cross the blood-brain barrier and achieve a concentration of 50% concentration in the brain more than any other fatty acid in plasma. Natural sources of CA include vegetable oils such as palm oil and coconut oil, mammalian milk and some seeds. Several studies have shown that CA has varied action on targets that include AMPA receptors, PPAR-γ, inflammatory/oxidative stress pathways and gut dysbiosis. Based on these lines of evidence, CA has proved to be effective in the amelioration of neurological diseases such as epilepsy, affective disorders and Alzheimer's disease. But these studies still warrant more pre-clinical and clinical studies that would further prove its efficacy. Hence, to understand the potential of CA in brain disease and associated comorbid conditions, an advance and rigorous molecular mechanistic study, apart from the reported in-vitro/in-vivo studies, is urgently required for the development of this compound through clinical setups., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2023
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50. Addressing Challenges in Insulin Storage: An Ethical Dilemma among Physicians.
- Author
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Pande AK, Thakur AK, Kanchan A, and Srivastava I
- Abstract
Background and Aims: Insulin is a temperature-sensitive protein; hence, its potency is highly dependent on appropriate storage. Ideally, insulin should be stored in the refrigerator, but when in use it can be stored at room temperature for up to four weeks. However, room temperatures vary widely across regions and countries, and all rural areas of developing countries like India are not electrified. This study explored physicians' perception of alternative methods for appropriate storage of insulin, such as indigenous storage methods like clay pots., Methods: A Study was conducted among 188 Indian physicians attending a diabetes conference in December 2018 to evaluate the feasibility of indigenous storage methods., Results: It was observed that although the use of alternate indigenous methods like clay pots was recommended by them, the proportion was low. The awareness of literature on these methods for insulin storage validation was also less than 50%. Owing to the lack of validation studies on indigenous methods, nearly 80% of the physicians felt that they were not confident to recommend them. Besides, the study results highlighted the necessity of conducting an adequate number of validation studies on indigenous methods in the Indian setting, considering their scarcity., Conclusion: This is the first time we highlight ethical dilemmas through a study among physicians when they advise non-refrigerator methods for insulin storage, in the event of a lack of electricity supply. It is hoped that results from these studies would highlight ethical dilemmas among physicians and would motivate researchers in this field to conduct studies to validate alternative methods of insulin storage., Competing Interests: There are no conflicts of interest., (Copyright: © 2023 Indian Journal of Endocrinology and Metabolism.)
- Published
- 2023
- Full Text
- View/download PDF
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