3,233 results on '"Saxena A"'
Search Results
2. Review of computer‐assisted diagnosis model to classify follicular lymphoma histology.
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Saxena, Pranshu, Aggarwal, Sahil Kumar, Sinha, Amit, Saxena, Sandeep, and Singh, Arun Kumar
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COMPUTER-aided diagnosis , *FOLLICULAR lymphoma , *IMAGE analysis , *IMAGE processing , *IMAGE recognition (Computer vision) - Abstract
The field of image processing is experiencing significant advancements to support professionals in analyzing histological images obtained from biopsies. The primary objective is to enhance the process of diagnosis and prognostic evaluations. Various forms of cancer can be diagnosed by employing different segmentation techniques followed by postprocessing approaches that can identify distinct neoplastic areas. Using computer approaches facilitates a more objective and efficient study of experts. The progressive advancement of histological image analysis holds significant importance in modern medicine. This paper provides an overview of the current advances in segmentation and classification approaches for images of follicular lymphoma. This research analyzes the primary image processing techniques utilized in the various stages of preprocessing, segmentation of the region of interest, classification, and postprocessing as described in the existing literature. The study also examines the strengths and weaknesses associated with these approaches. Additionally, this study encompasses an examination of validation procedures and an exploration of prospective future research roads in the segmentation of neoplasias. Significance Statement: Critical review of histological image analysis, focusing on diagnosing follicular lymphoma.Analysis of state‐of‐the‐art image processing methodologies.Implementation of computer‐based segmentation to enhance objectivity in diagnosis.Emphasis on improving diagnostic accuracy for favorable patient outcomes.Establishes a foundation for future research in histological image analysis. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Resilient riverine social–ecological systems: A new paradigm to meet global conservation targets.
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Perry, Denielle, Praskievicz, Sarah, McManamay, Ryan, Saxena, Alark, Grimm, Kerry, Zegre, Nicolas, Bair, Lucas, Ruddell, Benjamin L., and Rushforth, Richard
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The United Nations' Convention on Biological Diversity set forth the 30 × 30 target, an agenda for countries to protect at least 30% of their terrestrial, inland water, and coastal and marine areas by 2030. With <6 years to reach that goal, riverine conservation professionals are faced with the difficult decision of prioritizing which rivers or river segments should be conserved (protected and/or restored). While incorporating resilience into conservation planning is essential for enhancing, restoring, and maintaining the vital riverine ecosystem services (ES) most threatened by climate change and other environmental and human stresses, this paradigm is at odds with traditional conservation approaches that are either opportunistic or reactionary, where only unique and highly visible ecosystems have been prioritized. Barriers to implementing resilience‐based riverine conservation planning include: (1) difficulties in conceptualizing and quantifying resilience; (2) insufficient consideration of the social components of riverine systems; (3) the inapplicability of terrestrial‐only conservation models to aquatic systems; and (4) the traditional ad hoc and opportunistic approach to conservation. To overcome these barriers, we propose a resilience‐based riverine conservation framework that includes: (1) assessing riverine resilience using indicator frameworks; (2) considering rivers as dynamically coupled social–ecological systems; (3) explicitly incorporating terrestrial–aquatic network connectivity into conservation decision‐making; and (4) strategic systems planning using a novel resilience–conservation matrix as a tool. This framework has the potential to transform conservation practices around the globe to more effectively protect river systems and enhance their resilience to climate change and human development. This article is categorized under:Water and Life > Conservation, Management, and AwarenessScience of Water > Water and Environmental ChangeHuman Water > Water Governance [ABSTRACT FROM AUTHOR]
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- 2024
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4. Experimental characterization of dynamics of bed‐scale liquid spreading in a trickle bed.
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Saxena, Devesh, Gulia, Rohit S., Augier, Frederic, Haroun, Yacine, and Buwa, Vivek V.
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POROUS materials ,SURFACE tension ,VISCOSITY ,PRESSURE drop (Fluid dynamics) ,DIMENSIONLESS numbers - Abstract
We report measurements performed to understand the effects of gas (QG) and liquid (QL) flow rates, surface tension (σGL), liquid viscosity (μL), and particle diameter (dp) on dynamics of local liquid spreading, pressure drop, and overall liquid holdup in a pseudo‐2D trickle bed. We show that an increase in the gas‐phase inertia leads to a decrease in the lateral liquid spreading, whereas an increase in the liquid‐phase inertia leads to an increase in the lateral liquid spreading. We also show that an increase in dp causes a reduction in the lateral liquid spreading. Using dimensionless numbers (AB and We), we propose a regime map showing contributions of different forces to the local liquid spreading. We show that the interplay between the inertia and capillary forces governs the liquid distribution near the inlet, whereas the relative contribution of gravitational force increases toward the outlet. Finally, we propose a relation between AB and We for "bed‐scale" liquid spreading. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Managing giant omphalocele: A systematic review of surgical techniques and outcomes.
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Ghattaura, Harmit, Ross, Andrew, Aldeiri, Bashar, Mutanen, Annika, and Saxena, Amulya
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UMBILICAL hernia ,OPERATIVE surgery ,BOTULINUM toxin ,PNEUMOPERITONEUM ,NEWBORN infants - Abstract
Aim: We analysed closure techniques in the treatment of giant omphalocele. A challenging pathology where there lacks consensus. Methods: Cochrane, MEDLINE and EMBASE were searched between 1 January 1992 and 31 December 2022 using terms and variations: omphalocele, exomphalos, giant, closure and outcome. Papers were selected using Preferred Reporting Items for Systematic review and Meta‐Analyses 2020 criteria. Data collected included demographics, timing and technique of surgical repair, morbidity and mortality. Results: We identified 342 papers; 34 met inclusion criteria with a total 356 neonates. Initial non‐operative management was described in 26 papers (14 dressings, eight silo, four serial sac‐ligation). Operative techniques by paper were as follows: Early closure: nine primary suture closure without patch, two primary closure with patch and four mixed methods. Delayed closure: five simple, four‐component separation technique, four tissue expanders, one Botox/pneumoperitoneum and two with patch. Median number of procedures was two (1–6) in the early group versus three (1–4) in the delayed. The most favourable was early primary closure with biological patch. The most unfavourable was delayed closure with patch. Cumulative reported mortality remained high, mostly due to non‐surgical causes. Conclusion: Definitions of giant omphalocele in the literature were heterogeneous with a variety of management approaches described. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Gene expression differences associated with intrinsic hindfoot muscle loss in the jerboa, Jaculus jaculus.
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Tran, Mai P., Ochoa Reyes, Daniel, Weitzel, Alexander J., Saxena, Aditya, Hiller, Michael, and Cooper, Kimberly L.
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HEPATOCYTE growth factor ,FIBROBLAST growth factors ,MUSCLE growth ,GENE expression ,MUSCULAR atrophy - Abstract
Vertebrate animals that run or jump across sparsely vegetated habitats, such as horses and jerboas, have reduced the number of distal limb bones, and many have lost most or all distal limb muscle. We previously showed that nascent muscles are present in the jerboa hindfoot at birth and that these myofibers are rapidly and completely lost soon after by a process that shares features with pathological skeletal muscle atrophy. Here, we apply an intra‐ and interspecies differential RNA‐Seq approach, comparing jerboa and mouse muscles, to identify gene expression differences associated with the initiation and progression of jerboa hindfoot muscle loss. We show evidence for reduced hepatocyte growth factor and fibroblast growth factor signaling and an imbalance in nitric oxide signaling; all are pathways that are necessary for skeletal muscle development and regeneration. We also find evidence for phagosome formation, which hints at how myofibers may be removed by autophagy or by nonprofessional phagocytes without evidence for cell death or immune cell activation. Last, we show significant overlap between genes associated with jerboa hindfoot muscle loss and genes that are differentially expressed in a variety of human muscle pathologies and rodent models of muscle loss disorders. All together, these data provide molecular insight into the process of evolutionary and developmental muscle loss in jerboa hindfeet. Research Highlights: Limb muscles have been lost repeatedly including in species that run or jump, such as the jerboas. Here, the authors show gene expression differences and enriched pathways that point to candidate molecular processes and correlation with multiple cases of pathological muscle loss. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Fabrication and characterization of human finger ridge‐inspired soft elastomeric pressure sensor with liquid metal‐embedded microchannels.
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Saxena, Akshay and Patra, Karali
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TACTILE sensors ,PRESSURE sensors ,ELASTOMERS ,LIQUID metals ,SOFT robotics - Abstract
Soft sensors are flexible and stretchable, and because of this, they can be used on a wide range of surfaces, regardless of their size or shape. Such sensors may have applications such as in human–robot interaction, healthcare, soft robotics and human motion detection, where they can sense their surroundings and provide information. In this work, a soft piezoresistive sensor inspired by human finger ridges has been fabricated with liquid metal (EGaIn) electrode‐filled embedded microchannels on elastomeric material (Ecoflex 0030) and characterized for a pressure range of 0 to 280 kPa at different compression rates. The sensitivity of the elastomeric sensor increases and the limit of detection (LOD) decreases with a reduction in compression rate. In this work, microchannels on soft and stretchable elastomers are cast on a metallic mold prepared using the micromilling method. This method reduces the complexity of developing microchannels on the soft material using the metallic mold. The sensor has microchannels with a cross‐section of 200 μm × 200 μm, an active sensing area of 10 × 10 mm2 and overall dimensions of 15 × 15 × 2 mm3. At a low compression rate, this sensor exhibits a maximum sensitivity of 0.126 kPa−1 and a high linearity of 0.98, a LOD of 68 Pa, a response time of 30 ms and stability for 10 000 consecutive cycles at 100 kPa load. The developed sensor was shown to successfully differentiate various objects (soft to hard) based on the feedback it received when it was deployed on the gripper of an industrial manipulator. © 2024 The Author(s). Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Synthesis and properties of tailored β‐tricalcium phosphate for bone filler applications.
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Saxena, Abhinav, Vignesh, R., Roy, Sabyasachi, Sahai, Saumitra, Bhattacharjee, D., Basu, Bikramjit, and Mukherjee, Subrata
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FOURIER transform infrared spectroscopy , *SPINAL surgery , *SURGICAL site infections , *ORTHOPEDIC surgery , *BONE grafting - Abstract
The present work reports the synthesis of highly phase pure (> 95%) β‐TCP and its subsequent conversion into granules for bone graft applications, using an industrial scale proprietary manufacturing route. Following the wet chemical approach, several process parameters, were adjusted for large volume synthesis, including pH, precursor concentration, and ripening time. The granulation process is tailored to facilitate the scalibility and control over morphology, porosity, and pore size. X‐ray diffraction analysis confirms the presence of pure β‐TCP phase where as Ca/P molar ratio of 1.497 was determined using ICP‐OES. Fourier transform infrared spectroscopy depicts the presence of PO43− as a major molecular group. Scanning electron microscopy (SEM) images of the β‐TCP powders reveal necking features, a characteristic morphology of β‐TCP. SEM images of the β‐TCP granules reveal microporosity, which aids in triggering a biological response. The TGA‐DTA curve suggests that the weight loss in pure β‐TCP is twice as compared with β‐TCP containing hydroxyapatite. Furthermore, these β‐TCP granules were clinically tested in a few orthopedic and spine surgeries. In all the treated patients, β‐TCP granules did not induce any pus formation or infection at the surgical sites, thereby establishing clinically relevant biocompatibility properties. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Benzyl/phenyl‐1,2,3‐Triazole Tethered 3‐Acetyl Coumarins as Potential Drug‐Resistant Antitubercular Agents: Synthesis, Biology, and in Silico Investigations as Mtb DNA Gyrase Inhibitors.
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Bakchi, Bulti, Maddipatla, Sarvan, Gottemukkala, Seshamma, Raut, Shital, Naiyaz Ahmad, Mohammad, Imran, Mohmmad, Saxena, Deepanshi, Maitra, Rahul, Kumari Agnivesh, Puja, Pal Kalia, Nitin, Nanduri, Srinivas, Dasgupta, Arunava, Chopra, Sidharth, and Madhavi Yaddanapudi, Venkata
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ANTITUBERCULAR agents ,DNA topoisomerase II ,MOLECULAR docking ,BINDING energy ,DRUG interactions - Abstract
Owing to the emergence of multi‐drug resistant tuberculosis, there is a need for the exploration of new antitubercular agents. In this context, new coumarin‐based 1,2,3‐triazole hybrids were developed and evaluated for their antimicrobial activity against ESKAPE pathogens and the Mtb H37Rv strain. Among them, compounds 9 c and 12 showed MICs of 1 and 2 μg/mL, respectively, against the Mtb strain. The lead compounds exhibited a good selectivity index against Vero cells and were equally effective against ETB‐resistant and RIF‐resistant Mtb strains. Time‐kill kinetic studies revealed the bacteriostatic properties of the lead compounds, while combination studies using FDA‐approved antibiotics showed no drug interactions. Based on the structural similarity, it was envisaged that they might inhibit the DNA gyrase, which was further proved by the DNA supercoiling inhibition assay. Additionally, in silico docking studies, binding energy calculations, and ADME/T studies for the synthesized conjugates showed favourable pharmacokinetic and physicochemical characteristics. Hence, these molecules could further pave the way for discovering new potent antitubercular agents to combat AMR. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Differential effects of the N‐terminal helix of FGF8b on the activity of a small‐molecule FGFR inhibitor in cell culture and for the extracellular domain of FGFR3c in solution.
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Mineev, Konstantin S., Hargittay, Bruno, Jin, Jing, Catapano, Claudia, Dietz, Marina S., Segarra, Marta, Harwardt, Mark S., Richter, Christian, Jonker, Hendrik R. A., Saxena, Krishna, Sreeramulu, Sridhar, Heilemann, Mike, Acker‐Palmer, Amparo, and Schwalbe, Harald
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FIBROBLAST growth factor receptors ,FIBROBLAST growth factors ,BINDING sites ,CELL culture - Abstract
SSR128129E (SSR) is a unique small‐molecule inhibitor of fibroblast growth factor receptors (FGFRs). SSR is a high‐affinity allosteric binder that selectively blocks one of the two major FGFR‐mediated pathways. The mechanisms of SSR activity were studied previously in much detail, allowing the identification of its binding site, located in the hydrophobic groove of the receptor D3 domain. The binding site overlaps with the position of an N‐terminal helix, an element exclusive for the FGF8b growth factor, which could potentially convert SSR from an allosteric inhibitor into an orthosteric blocker for the particular FGFR/FGF8b system. In this regard, we report here on the structural and functional investigation of FGF8b/FGFR3c system and the effects imposed on it by SSR. We show that SSR is equally or more potent in inhibiting FGF8b‐induced FGFR signaling compared to FGF2‐induced activation. On the other hand, when studied in the context of separate extracellular domains of FGFR3c in solution with NMR spectroscopy, SSR is unable to displace the N‐terminal helix of FGF8b from its binding site on FGFR3c and behaves as a weak orthosteric inhibitor. The substantial inconsistency between the results obtained with cell culture and for the individual water‐soluble subdomains of the FGFR proteins points to the important role played by the cell membrane. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Dynamic Twitter friend grouping based on similarity, interaction, and trust to account for ever‐evolving relationships.
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Shetty, Nisha P., Muniyal, Balachandra, Maben, Leander Melroy, Jayaraj, Rithika, and Saxena, Sameer
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ONLINE social networks ,DATA privacy ,DIGITAL technology ,RELATIONSHIP status ,SOCIAL networks ,VIRTUAL communities - Abstract
Online social networks have become ubiquitous, allowing users to share opinions on various topics. However, oversharing can compromise privacy, leading to potential blackmail or fraud. Current platforms lack friend categorization based on trust levels. This study proposes simulating real‐world friendships by grouping users into three categories: acquaintances, friends, and close friends, based on trust and engagement. It also introduces a dynamic method to adjust relationship status over time, considering users' past and present offenses against peers. The proposed system automatically updates friend lists, eliminating manual grouping. It calculates relationship strength by considering all components of online social networks and trust variations caused by user attacks. This method can be integrated with clustering algorithms on popular platforms like Facebook, Twitter, and Instagram to enable constrained sharing. By implementing this system, users can better control their information sharing based on trust levels, reducing privacy risks. The dynamic nature of the relationship status adjustment ensures that the system remains relevant as user interactions evolve over time. This approach offers a more nuanced and secure social networking experience, reflecting real‐world relationship dynamics in the digital sphere. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Hydrostatic Pressure‐Tuning of Opto‐Electronic and Thermoelectric Properties Half‐Heusler Alloy RhTiP With DFT Analysis.
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Dixit, Aparna, Saxena, Arti, Abraham, Jisha Annie, Dubey, Shubha, Sharma, Ramesh, Qaid, Saif M. H., Štich, Ivan, Aslam, Muhammad, and Zetsepin, Anatoly
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POISSON'S ratio , *MODULUS of rigidity , *TRANSPORT theory , *BAND gaps , *SEEBECK coefficient - Abstract
Utilizing DFT along with Boltzmann transport theory, the structural, elastic, electrical, optical, and thermoelectric properties of half‐Heusler compound RhTiP have been calculated in principle to examine the pressure effect in the range of 0–40 GPa. As pressure increases, the volume and normalized lattice parameter decreased. In addition to satisfying the Born stability criterion, which ensured the compound RhTiP "natural stability," the zero pressure elastic constants and the pressure‐dependent elastic constants are positive up to 40 GPa. The band structure computations guarantee the semiconductor nature of RhTiP, as demonstrated by the presence of electronic band gap of 1.035 eV at zero pressure. Using the Voigt‐Reuss‐Hill (VRH) averaging scheme under pressure, we have determined the values of this compound's bulk modulus B$$ B $$, shear modulus G$$ G $$, Young's modulus E$$ E $$, Pugh ratio B/G$$ B/G $$, Poisson's ratio v$$ v $$, and anisotropy factor A$$ A $$. Because the bulk modulus responds linearly to pressure, the material's hardness increases as pressure rises. Additionally, under pressures up to 40 GPa, the optical characteristics of RhTiP, including their reflectivity, absorptivity, conductivity, dielectric constant, refractive index, and loss function, were assessed and discussed. Furthermore, the thermoelectric properties are also studied for the materials and supports the tunning of pressure. This study provides a gateway to how the optoelectronic and transport properties of cubic RhTiP could be tuned by employing external pressure. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Comparative Bibliometric Analysis of Established and Emerging Databases on Salivary Biomarkers for Early Oral Cancer Diagnosis.
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Pradhan, Pragya, Saxena, Vrinda, and Haider, Aiman
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CANCER diagnosis , *EARLY detection of cancer , *BIBLIOMETRICS , *ORAL cancer , *MOUTH tumors - Abstract
Background: Salivary biomarkers play an important role in the preventive strategy for oral cancer detection at an early stage. The aim of this study was to carry out a comparative quantitative analysis of the research material on the topic in one established database, Scopus and another emerging database, Dimensions. Method: An electronic search was performed in Scopus and Dimensions in April 2024 with the search subjects "Saliva," "Biomarkers," "Diagnosis," and "Oral Cancer." The retrieved data were analyzed using Biblioshiny for RStudio and MS Excel. Result: The search yielded 229 and 158 documents in Scopus and Dimensions, respectively. The data were studied to understand the coverage, concentration, and diversion of research articles. The analysis revealed high singularity index for Scopus and low overlap percentage between the two databases. Scopus was found to have higher citation count per article, however, the citation correlation between Scopus and Dimensions was found to be strong. Author productivity was found to be low in both the databases. Conclusion: Scopus and Dimensions vary in their scope, volume of data, and coverage policies. Both the databases have complimentary coverage on salivary biomarkers for oral cancer diagnosis. However, Scopus has a greater number of articles, sources, and citations resulting in better coverage of the topic. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Evaluating the yield of digital single operator cholangioscopy in posttransplant biliary strictures after unsuccessful guidewire placement with ERCP.
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Ng, Jonathan, Chandran, Sujievvan, Be, Kim Hay, Zorron Cheng Tao Pu, Leonardo, Choi, Kevin Kyung Ho, Saxena, Payal, Kaffes, Arthur John, Vaughan, Rhys, and Efthymiou, Marios
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PERCUTANEOUS transhepatic cholangiography ,ENDOSCOPIC retrograde cholangiopancreatography ,DIGITAL music ,ENDOSCOPIC surgery ,LIVER transplantation - Abstract
Background and Aims: Strictures are the most common biliary complication after liver transplantation, and endoscopic retrograde cholangiopancreatography (ERCP) is considered the gold standard in its management. Failure to cross the biliary anastomosis requires a repeated attempt with ERCP, referral for percutaneous transhepatic cholangiography (PTC) or surgery. We present our experience with the digital single operator cholangioscope (D‐SOC) in achieving guidewire access in a liver transplant cohort with difficult biliary strictures who have failed conventional ERCP methods. Methods: This was a retrospective study involving two adult liver transplant centers servicing the two most populated states in Australia. Deceased‐donor liver transplant recipients undergoing D‐SOC for biliary strictures who have failed conventional methods to achieve biliary access were included. Results: Between July 2017 to April 2022, eighteen patients underwent D‐SOC after failing to achieve guidewire placement through standard ERCP techniques. Thirteen out of eighteen (72%) had successful guidewire placement with index D‐SOC. Five of eighteen patients (28%) had unsuccessful guidewire placement with D‐SOC. In two of these patients, use of D‐SOC informed further endoscopic management, with one avoiding PTC and the other avoiding surgery. Two of the five patients required PTC and one patient was left unstented. Three patients developed post D‐SOC cholangitis. Conclusions: D‐SOC is effective at achieving guidewire access in post‐liver transplant patients who fail conventional ERCP techniques and should be considered in the treatment algorithm as a step before PTC and surgery. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Creep crack growth in alloy 247LC‐DS.
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Towner, Zachary B., Narasimhachary, Santosh B., Gravett, Phillip W., Neu, Richard W., Muhlstein, Christopher L., and Saxena, Ashok
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FRACTURE mechanics ,GAS turbine blades ,ANATOMICAL planes ,HEAT resistant alloys ,DATA analysis - Abstract
Creep crack growth experiments were performed at 750°C, 850°C, and 950°C on nominally 3 and 12.7 mm thick compact type specimens of alloy 247LC‐DS, a Ni‐base superalloy used for hot‐section gas turbine blades. The primary crack plane was transverse to the solidification direction. The crack path–microstructure interaction was characterized. Crack growth occurred in a creep‐ductile manner and data analyses utilized time‐dependent fracture mechanics. No measurable crack growth occurred at 750°C. Cracks grew by formation, growth, and coalescence of cavities on interdendritic carbides in both the primary crack plane and normal to said plane at 850°C and 950°C. The variability in the crack growth rate was higher in thicker specimens, but the mean creep crack growth rate versus Ct relationship in 247LC‐DS was neither sensitive to test temperature ≥850°C nor specimen thickness. Quantitative relationships between da/dt and Ct were derived for mean, upper, and lower bound creep crack growth rate trends. Highlights: Creep crack growth occurred in a creep‐ductile manner at 850°C and 950°C.Creep crack growth rates correlated with Ct/C*.Crack tip damage accumulation increased the variability in crack growth rates.Measuring creep crack growth via unloading compliance is preferred for DS materials. [ABSTRACT FROM AUTHOR]
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- 2024
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16. To Study the Effects of Microemulsion Based Hybrid Biofuel on Emission Characteristics of CI Engine: A Short Review.
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Anand, Kul Bhushan, Kumar, Himansh, and Saxena, Vishal
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COMBUSTION efficiency ,CETANE number ,PARTICULATE matter ,CARBON monoxide ,SULFUR oxides ,NITROGEN oxides - Abstract
Microemulsion based fuels (MBF) have gained significant attention in recent years due to their potential to enhance combustion efficiency, reduce emissions, and improve overall engine performance. This research paper enlightens the effects of physiochemical properties on the emission characteristics of CI engine. The microemulsions are formulated using surfactants, co‐surfactants, water or alcohols, and fuel components. The effects of density, viscosity, calorific value, cold flow properties, and cetane number along with the stability and the multi‐component characteristics of (MBF) has been taken into consideration to examine its effects on Emission characteristics such as nitrogen oxides (NOx), sulfur oxides (SOx), carbon monoxide (CO), particulate matter (PM), and unburned hydrocarbons (UHC). Microemulsion‐based fuels lower emissions of NOx and PM, recognized to the more complete combustion. The review highlights various studies that have investigated the benefits of microemulsion fuels, including reduced emissions of different pollutants and thus reduce the adverse effect on environment. In conclusion, microemulsion‐based fuels show likely physiochemical properties, as well as favorable emission characteristics, with reduced NOx, SOx, CO, PM, and UHC emissions. This study highlights the potential of microemulsion‐based fuels as environment friendly alternatives, flagging the way for further research. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Utilization of Polymers for the Development of Nanomaterials.
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Chandra, Phool, Rastogi, Vaibhav, Porwal, Mayur, Saxena, Urvashi, Verma, Anurag, Fatma, Nishat, Ali, Zeeshan, and Sachan, Neetu
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BIOPOLYMERS ,POLYMER clay ,CARBON composites ,POLYMERIC nanocomposites ,SUSTAINABILITY - Abstract
This study highlights the significance of polymers in the progress of nanoparticles across various areas. The molecules of polymers are highly regarded for their ability to adapt and self‐assemble, making them essential components in the creation of nanomaterials. The variety of polymers include natural polymers such as chitosan, synthetic polymers like polyethylene, and biodegradable polymers like poly(lactic‐co‐glycolic acid) (PLGA). These kinds of polymers possess distinct advantages such as high strength, environmental sustainability, and biocompatibility. Incorporation of nanoscale fillers into polymer matrices, which enhances the mechanical, thermal, and electrical properties of materials, is crucial for the development of nanocomposites. Illustration instances encompass carbon nanotube‐polymer composites and polymer clay hybrids, which find application in the construction, automotive, and aerospace sectors. Composites can employ many synthetic methods to generate nanostructures. Nanofibers have utility in tissue engineering, whereas polymer nanoparticles function as carriers for medical delivery. Also, polymers enhance nanomaterials by modifying their surfaces, a crucial factor for their application in membrane technology, catalysis, and sensing. A collaborative synergy between polymers and nanoparticles fosters a wide range of applications, showcasing the versatility and potential of polymers in altering the characteristics of nanomaterials. The resulting partnership continues to generate pioneering breakthroughs that address complex challenges and unveil unprecedented prospects in the domains of science, technology, and business. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Polymeric Advancements in Transdermal Drug Delivery: A Comprehensive Review on Stability, Safety, and Biocompatibility.
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Raghav, Arvind, Rastogi, Vaibhav, Chandra, Phool, Prabahar, A. Elphine, Verma, Amit Kumar, Saxena, Urvashi, Durgapal, Sumit, Singh, Bhavana, and Verma, Anurag
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PRESSURE-sensitive adhesives ,TRANSDERMAL medication ,DRUG delivery systems ,DRUG standards ,TREATMENT effectiveness ,GASTROINTESTINAL system - Abstract
Transdermal drug delivery systems have received a lot of attention due to their noninvasive nature and possible advantages over standard drug administration methods. Because transdermal administration systems skip the gastrointestinal tract and hence avoid hepatic first pass metabolism, also the chance of adverse effects such as liver malfunction and gastrointestinal tract discomfort is low. This comprehensive review explores the various aspects of polymeric advancements in transdermal drug delivery, encompassing their roles as matrix and microreservoir formers, microneedles, pressure sensitive adhesives, rate controlling membranes, and many other components. The article emphasizes the importance of biocompatibility, chemical compatibility, and stability of polymers within the transdermal delivery system. Furthermore, it delves into the recent advancements in synthetic and natural polymer‐based transdermal drug delivery systems. Thus, a comprehensive search strategy is conducted in electronic databases such as PubMed, Scopus, and Web of Science to write this review paper. The scope of this investigation involves an in‐depth study of the various polymeric materials used, their formulations, and the mechanisms that support their efficacy in delivering medications over the skin barrier. Additionally, it explores the challenges associated with stability and safety concerns, while highlighting novel approaches to overcome these problems. Furthermore, the review discusses the biocompatibility of polymeric materials, crucial for ensuring minimal adverse effects and maximum therapeutic efficacy. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Monte Carlo‐based dosimetry of proposed bi‐radionuclide (125I and 106Ru/106Rh) eye plaque: A feasibility study.
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Mishra, Subhalaxmi, Selvam, T. Palani, Sahoo, Sridhar, Saxena, Sanjay Kumar, Kumar, Yogendra, and Sapra, Balvinder K.
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MONTE Carlo method ,BETA rays ,TUMOR treatment ,RADIOISOTOPES ,RADIOISOTOPE brachytherapy - Abstract
Background: Combining the sharp dose fall off feature of beta‐emitting 106Ru/106Rh radionuclide with larger penetration depth feature of photon‐emitting125I radionuclide in a bi‐radionuclide plaque, prescribed dose to the tumor apex can be delivered while maintaining the tumor dose uniformity and sparing the organs at risk. The potential advantages of bi‐radionuclide plaque could be of interest in context of ocular brachytherapy. Purpose: The aim of the study is to evaluate the dosimetric advantages of a proposed bi‐radionuclide plaque for two different designs, consisting of indigenous 125I seeds and 106Ru/106Rh plaque, using Monte Carlo technique. The study also explores the influence of other commercial 125I seed models and presence or absence of silastic/acrylic seed carrier on the calculated dose distributions. The study further included the calculation of depth dose distributions for the bi‐radionuclide eye plaque for which experimental data are available. Methods: The proposed bi‐radionuclide plaque consists of a 1.2‐mm‐thick silver (Ag) spherical shell with radius of curvature of 12.5 mm, 20 µm‐thick‐106Ru/106Rh encapsulated between 0.2 mm Ag disk, and a 0.1‐mm‐thick Ag window, and water‐equivalent gel containing 12 symmetrically arranged 125I seeds. Two bi‐radionuclide plaque models investigated in the present study are designated as Design I and Design II. In Design I, 125I seeds are placed on the top of the plaque, while in Design II 106Ru/106Rh source is positioned on the top of the plaque. In Monte Carlo calculations, the plaque is positioned in a spherical water phantom of 30 cm diameter. Results: The proposed bi‐radionuclide eye plaque demonstrated superior dose distributions as compared to 125I or 106Ru plaque for tumor thicknesses ranges from 5 to 10 mm. Amongst the designs, dose at a given voxel for Design I is higher as compared to the corresponding voxel dose for Design II. This difference is attributed to the higher degree of attenuation of 125I photons in Ag as compared to beta particles. Influence of different 125I seed models on the normalized lateral dose profiles of Design I (in the absence of carrier) is negligible and within 5% on the central axis depth dose distribution as compared to the corresponding values of the plaque that has indigenous 125I seeds. In the presence of a silastic/acrylic seed carrier, the normalized central axis dose distributions of Design I are smaller by 3%–12% as compared to the corresponding values in the absence of a seed carrier. For the published bi‐radionuclide plaque model, good agreement is observed between the Monte Carlo‐calculated and published measured depth dose distributions for clinically relevant depths. Conclusion: Regardless of the type of 125I seed model utilized and whether silastic/acrylic seed carrier is present or not, Design I bi‐radionuclide plaque offers superior dose distributions in terms of tumor dose uniformity, rapid dose fall off and lesser dose to nearby critical organs at risk over the Design II plaque. This shows that Design I bi‐radionuclide plaque could be a promising alternative to 125I plaque for treatment of tumor sizes in the range 5 to 10 mm. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Synthesis and Antitumour Evaluation of Tricyclic Indole‐2‐Carboxamides against Paediatric Brain Cancer Cells.
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John Hamilton, Alexander, Lane, Samuel, Werry, Eryn L., Suri, Amreena, Bailey, Anders W., Mercé, Clémentine, Kadolsky, Ulrich, Payne, Alan D., Kassiou, Michael, Treiger Sredni, Simone, Saxena, Alka, and Gunosewoyo, Hendra
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- 2024
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21. Identifying Genetic Loci Determining Grain Yield Under Drought Stress in Rice (Oryza sativa L.).
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Thomas, Helan Baby, Verulkar, Satish, Agarwal, Toshi, Saxena, Ritu, and Verma, Sunil Kumar
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LOCUS (Genetics) ,GENE mapping ,RICE ,YIELD stress ,CULTIVARS - Abstract
Identifying the genomic regions (quantitative trait loci (QTL)) significantly linked to grain yield under drought stress could expedite the development of novel rice cultivars suited for rainfed areas through marker‐assisted breeding. This study identified QTL regions linked to plant phenology and production traits by evaluating 122 recombinant inbred lines (RILs) of Danteshwari × Daggaddeshi under different environmental conditions. A consistent QTL region associated with grain yield under water stress (60.4 Mbp) was mapped on chromosome 1 between RM428 and RM24 with an LOD score of 4.0. Another QTL region (9.4 Mbp) linked to plant height under all environmental conditions was mapped on chromosome 1 between RM1‐HvSSR1‐87 with a LOD score of 7.5 and phenotypic variance of 25%. A core set of 402 diverse rice accessions was also evaluated under water stress conditions and subjected to genome‐wide association analysis. Twelve markers linked to grain yield under drought were identified, out of which five were significantly associated with grain yield and days to flowering under drought. The markers linked to grain yield were compared between the bi‐parental population and germplasm accessions to identify the common markers. Three markers (RM1, RM259 and RM201) were found to be consistently linked to drought stress across the seasons in both bi‐parental population and germplasm accessions studied and could be potential candidates for application in marker‐assisted selection for improving grain yield under drought stress in rice. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Efficacy and Safety of Upadacitinib or Elsubrutinib Alone or in Combination for Patients With Systemic Lupus Erythematosus: A Phase 2 Randomized Controlled Trial.
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Merrill, Joan T., Tanaka, Yoshiya, D'Cruz, David, Vila‐Rivera, Karina, Siri, Daniel, Zeng, Xiaofeng, Saxena, Amit, Aringer, Martin, D'Silva, Kristin M., Cheng, Ling, Mohamed, Mohamed‐Eslam F., Siovitz, Lucia, Bhatnagar, Sumit, Gaudreau, Marie‐Claude, Doan, Thao T., and Friedman, Alan
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THERAPEUTIC use of monoclonal antibodies ,COMBINATION drug therapy ,PATIENT safety ,DATA analysis ,STATISTICAL sampling ,BLIND experiment ,SYSTEMIC lupus erythematosus ,RANDOMIZED controlled trials ,CHI-squared test ,DESCRIPTIVE statistics ,JANUS kinases ,PROTEIN-tyrosine kinases ,DRUG efficacy ,RESEARCH ,STATISTICS ,NEUROTRANSMITTER uptake inhibitors ,DATA analysis software ,GLUCOCORTICOIDS ,PROPORTIONAL hazards models ,CHEMICAL inhibitors - Abstract
Objective: The 48‐week, phase 2 SLEek study (NCT03978520) evaluated the efficacy and safety of upadacitinib (JAK inhibitor) and elsubrutinib (BTK inhibitor) alone or in combination (ABBV‐599) in adults with moderately to severely active systemic lupus erythematosus (SLE). Methods: Patients were randomized 1:1:1:1:1 to elsubrutinib 60 mg and upadacitinib 30 mg once daily (ABBV‐599 high dose), elsubrutinib 60 mg and upadacitinib 15 mg once daily (ABBV‐599 low dose), elsubrutinib 60 mg once daily (QD), upadacitinib 30 mg QD, or placebo QD. The primary endpoint was the proportion of patients achieving both Systemic Lupus Erythematosus Responder Index 4 (SRI‐4) and glucocorticoid dose ≤10 mg QD at week 24. Additional assessments through week 48 included British Isles Lupus Assessment Group‐Based Composite Lupus Assessment (BICLA) and Lupus Low Disease Activity State (LLDAS) responses, number of flares, time to first flare, and adverse events. Results: The study enrolled 341 patients. The ABBV‐599 low dose and elsubrutinib arms were discontinued after a planned interim analysis showed lack of efficacy (no safety concerns). More patients achieved the primary endpoint with upadacitinib (54.8%; P = 0.028) and ABBV‐599 high dose (48.5%; P = 0.081) versus placebo (37.3%). SRI‐4, BICLA, and LLDAS response rates were higher for both upadacitinib and ABBV‐599 high dose versus placebo at weeks 24 and 48. Flares were reduced, and time to first flare through week 48 was substantially delayed with both upadacitinib and ABBV‐599 high dose versus placebo. No new safety signals were observed beyond those previously reported for upadacitinib or elsubrutinib. Conclusion: Upadacitinib 30 mg alone or in combination with elsubrutinib (ABBV‐599 high dose) demonstrated significant improvements in SLE disease activity and reduced flares and were well tolerated through 48 weeks. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Extreme leukocytosis in pregnancy: Is it always sinister?
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Agrawal, Swati, Das, Anamika, Saxena, Nikita, and Biswas, Ratna
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- 2024
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24. Graphene‐Coated Ni–Cu Alloys for Durable Degradation Resistance of Bi‐Polar Plates for Proton Exchange Membrane Fuel Cells: Remarkable Role of Alloy Composition.
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Arya, Abhishek Kumar, Singh Raman, R.K., Parmar, Rahul, Amati, Matteo, Gregoratti, Luca, and Saxena, Sumit
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- 2024
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25. A novel ryanodine receptor 2 inhibitor, M201‐A, enhances natriuresis, renal function and lusi‐inotropic actions: Preclinical and phase I study.
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Kaneko, Noboru, Loughrey, Christopher M., Smith, Godfrey, Matsuda, Ryuko, Hasunuma, Tomoko, Mark, Patric B., Toda, Masashi, Shinozaki, Makoto, Otani, Naoyuki, Kayley, Scott, Da Silva Costa, Ana, Martin, Tamara P., Dobi, Sara, Saxena, Priyanka, Shimamoto, Ken, Ishikawa, Tetsuya, Kambayashi, Ryuichi, Riddell, Alexandra, Elliott, Elspeth B., and McCarroll, Charlotte S.
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KIDNEY physiology ,GLOMERULAR filtration rate ,CHRONIC kidney failure ,HEART cells ,CALCIUM ions ,RYANODINE receptors - Abstract
Background and Purpose: The ryanodine receptor 2 (RyR2) is present in both the heart and kidneys, and plays a crucial role in maintaining intracellular Ca2+ homeostasis in cells in these organs. This study aimed to investigate the impact of M201‐A on RyR2, as well as studying its effects on cardiac and renal functions in preclinical and clinical studies. Experimental Approach: Following the administration of M201‐A (1,4‐benzothiazepine‐1‐oxide derivative), we monitored diastolic Ca2+ leak via RyR2 and intracellular Ca2+ concentration in isolated rat cardiomyocytes and in cardiac and renal function in animals. In a clinical study, M201‐A was administered intravenously at doses of 0.2 and 0.4 mg·kg−1 once daily for 20 min for four consecutive days in healthy males, with the assessment of haemodynamic responses. Key Results: In rat heart cells, M201‐A effectively inhibited spontaneous diastolic Ca2+ leakage through RyR2 and exhibited positive lusi‐inotropic effects on the rat heart. Additionally, it enhanced natriuresis and improved renal function in dogs. In human clinical studies, when administered intravenously, M201‐A demonstrated an increase in natriuresis, glomerular filtration rate and creatinine clearance, while maintaining acceptable levels of drug safety and tolerability. Conclusions and Implications: The novel drug M201‐A inhibited diastolic Ca2+ leak via RyR2, improved cardiac lusi‐inotropic effects in rats, and enhanced natriuresis and renal function in humans. These findings suggest that this drug may offer a potential new treatment option for chronic kidney disease and heart failure. [ABSTRACT FROM AUTHOR]
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- 2024
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26. Arc of the Journeyman: Afghan Migrants in England.
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Saxena, Chayanika
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CITIES & towns , *AFGHANS , *EMIGRATION & immigration , *ETHNOLOGY , *CAPITAL movements - Abstract
The article discusses a book called "Arc of the Journeyman: Afghan Migrants in England" by Khan, which explores the experiences of Pashtun-Afghan migrant taxi drivers in the United Kingdom and Pakistan. The book aims to provide fresh perspectives on Afghan migration by examining the diverse forms of language, history, and identity that shape these experiences. It challenges conventional narratives of migration and highlights the complexities and ambivalences faced by migrants. While the book focuses on Pashtun-Afghan drivers, it could have benefited from comparisons with other migrant communities and a broader contextualization of the Afghan taxi-driving economy. [Extracted from the article]
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- 2024
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27. Gender, caste, and street vending in India: Towards an intersectional geography.
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Saxena, Saanchi
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STREET vendors , *EVIDENCE gaps , *CASTE , *GENDER ,DEVELOPING countries - Abstract
Through an analysis of the available literature on women street vendors in the Global South, and then specifically in India, this paper identifies several knowledge gaps and future directions for research. The paper makes three broad claims: (1) street vending spaces are fundamentally gendered spaces; (2) the intersectional identities and caste‐based locations of women street vendors shape their spatial experiences, material realities and access to power; and (3) gender and caste are co‐constituted categories that produce a spatiality unique to the Indian subcontinent. While the geographical approach towards street vending recognises the importance of space and considers vendors as spatial practitioners, vendors are often assumed to belong to a homogenous (male) category with differentials such as gender, race, age, ethnicity and caste invisibilised. This research gap is of even more critical importance in India where caste intersects with gender to produce space. Examining the literature on gender and street vending reveals three broad analytical themes—socio‐spatial disparities, politics of space, and strategies of control. What seems to be missing is a critical, qualitative focus on the experiences of women street vendors, the gendering of vending spaces, the recognition of caste as a dynamic factor, and a spatial analysis grounded in the Southern urban context. Ultimately, this paper makes the case for a situated and postcolonial feminist geography approach to street vending in India, and calls for an intersectional research agenda that is attentive to the co‐constitution of caste and gender in the production of urban space. [ABSTRACT FROM AUTHOR]
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- 2024
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28. Ischemic Stroke with Comorbid Cancer Has Specific miRNA‐mRNA Networks in Blood That Vary by Ischemic Stroke Mechanism.
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Knepp, Bodie, Navi, Babak B., Rodriguez, Fernando, DeAngelis, Lisa M., Elkind, Mitchell S. V., Iadecola, Costantino, Sherman, Carla P., Tagawa, Scott T., Saxena, Ashish, Ocean, Allyson J., Hull, Heather, Jickling, Glen, Sharp, Frank R., Ander, Bradley P., and Stamova, Boryana
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ISCHEMIC stroke ,GENE regulatory networks ,ETIOLOGY of cancer ,STROKE ,TRANSCRIPTOMES - Abstract
Objective: Approximately half of ischemic strokes (IS) in cancer patients are cryptogenic, with many presumed cardioembolic. We evaluated whether there were specific miRNA and mRNA transcriptome architectures in peripheral blood of IS patients with and without comorbid cancer, and between cardioembolic versus noncardioembolic IS etiologies in comorbid cancer. Methods: We studied patients with cancer and IS (CS; n = 42), stroke only (SO; n = 41), and cancer only (n = 28), and vascular risk factor‐matched controls (n = 30). mRNA‐Seq and miRNA‐Seq data, analyzed with linear regression models, identified differentially expressed genes in CS versus SO and in cardioembolic versus noncardioembolic CS, and miRNA‐mRNA regulatory pairs. Network‐level analyses identified stroke etiology‐specific responses in CS. Results: A total of 2,085 mRNAs and 31 miRNAs were differentially expressed between CS and SO. In CS, 122 and 35 miRNA‐mRNA regulatory pairs, and 5 and 3 coexpressed gene modules, were associated with cardioembolic and noncardioembolic CS, respectively. Complement, growth factor, and immune/inflammatory pathways showed differences between IS etiologies in CS. A 15‐gene biomarker panel assembled from a derivation cohort (n = 50) correctly classified 81% of CS and 71% of SO participants in a validation cohort (n = 33). Another 15‐gene panel correctly identified etiologies for 13 of 13 CS‐cardioembolic and 11 of 11 CS‐noncardioembolic participants upon cross‐validation; 11 of 16 CS‐cryptogenic participants were predicted cardioembolic. Interpretation: We discovered unique mRNA and miRNA transcriptome architecture in CS and SO, and in CS with different IS etiologies. Cardioembolic and noncardioembolic etiologies in CS showed unique coexpression networks and potential master regulators. These may help distinguish CS from SO and identify IS etiology in cryptogenic CS patients. ANN NEUROL 2024;96:565–581 [ABSTRACT FROM AUTHOR]
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- 2024
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29. Autoantibodies in COVID‐19 and Other Viral Diseases: Molecular, Cellular, and Clinical Perspectives.
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Chatterjee, Srijan, Bhattacharya, Manojit, Saxena, Sanskriti, Lee, Sang‐Soo, and Chakraborty, Chiranjib
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Autoantibodies are immune system‐produced antibodies that wrongly target the body's cells and tissues for attack. The COVID‐19 pandemic has made it possible to link autoantibodies to both the severity of pathogenic infection and the emergence of several autoimmune diseases after recovery from the infection. An overview of autoimmune disorders and the function of autoantibodies in COVID‐19 and other infectious diseases are discussed in this review article. We also investigated the different categories of autoantibodies found in COVID‐19 and other infectious diseases including the potential pathways by which they contribute to the severity of the illness. Additionally, it also highlights the probable connection between vaccine‐induced autoantibodies and their adverse outcomes. The review also discusses the therapeutic perspectives of autoantibodies. This paper advances our knowledge about the intricate interaction between autoantibodies and COVID‐19 by thoroughly assessing the most recent findings. [ABSTRACT FROM AUTHOR]
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- 2024
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30. Ultra‐sensitive electrochemical immunosensor based on 2D vanadium diselenide (VSe2) for efficient detection of pathogens: Salmonella Typhimurium.
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Alsharabi, Rim M., Singh, Jay, Saxena, Preeti S., and Srivastava, Anchal
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Layered transition metal dichalcogenides (TMDs), with an extensive surface area, intriguing tunable electrical and optical features, and a distinctive Van der Waals layered structure, yield outstanding sensing properties. Essentially, most TMDs originally existed in the crystallographic phase of a 2H trigonal prismatic structure, which is semiconducting in nature with poor electrocatalytic activity. In contrast, vanadium diselenide (VSe2) with its metastable metallic 1 T octahedral crystal structure has been proven to be an outstanding electrode material, embracing exceptional electrocatalytic behavior for various electrochemical (EC) applications. However, practically, VSe2 has hardly ever been explored in the field of biosensing technology. This study presents a novel EC biosensor based on the antibody of Salmonella Typhimurium (Anti‐ST) immobilized on VSe2‐supported Indium tin oxide (Anti‐ST/VSe2/ITO) for quantitative and efficient Salmonella Typhimurium (ST) detection. The Anti‐ST/VSe2/ITO bioelectrode displayed a linear relationship with ST concentration (1.3 × 10–107 CFU/ml) with a limit of detection (LOD) (0.096 CFU/ml) that is lower than previously reported ST biosensors and impressively high sensitivity (0.001996 μA.mL/CFU). Furthermore, the proposed electrode's electroanalytical activity was evaluated in spiked sugarcane juice, demonstrating distinguished applicability for specific ST detection in real samples. [ABSTRACT FROM AUTHOR]
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- 2024
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31. When compassion, aka karuna, enters the Indian psychotherapy space: A mixed‐method case‐series study of compassion‐focused therapy in depression.
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Sengupta, Pramita and Saxena, Priya
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PSYCHOTHERAPY , *FEAR , *COMPASSION , *TREATMENT effectiveness , *DESCRIPTIVE statistics , *HAMILTON Depression Inventory , *THEMATIC analysis , *RESEARCH methodology , *PSYCHOLOGICAL tests , *PSYCHIATRIC hospitals , *SHAME , *MENTAL depression - Abstract
Background: Compassion‐focused therapy (CFT) is transdiagnostic. It primarily targets shame and self‐criticism in persons with depression. While there have been studies in the West to explore the beneficial effects of CFT, there is a need to unpack how CFT functions in the East. Method: This study aimed to explore the utility and process of CFT in North‐East India. The authors tailored a 12‐session CFT module based on the suggestions of three local mental health professionals. A mixed‐method design was employed. Five mental health service users in a tertiary mental healthcare hospital diagnosed with depression based on ICD‐10 criteria were recruited in the study. For quantitative measurements, the Hamilton Depression Rating Scale (HDRS), Others as Shamer Scale (OAS), Fears of Compassion Scales (FOC), The Forms of Self‐Criticizing and Reassuring Scale (FSCRS) and Compassionate Engagement and Action Scales (CEAS) were administered. Three time point assessments were taken, that is, baseline, post‐intervention and 1‐month follow‐up. To understand the process of CFT, qualitative narrative analysis was undertaken on session notes, memos and reflective journals focusing on the nature of compassion, blocks of compassion, sense of shame and self‐criticality. Results: Quantitative findings indicated improvement of depressive symptoms and changes in sense of shame, fear of compassion, self‐criticality, self‐reassuring tendencies and compassionate engagements and actions. The qualitative findings shed light on the process of CFT. Conclusion: The authors discussed the findings anchoring the existing theories of CFT and relevant studies. The findings support the preliminary evidence of the utility of CFT in persons with depression. [ABSTRACT FROM AUTHOR]
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- 2024
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32. Designed Semiconductor Network Random Lasers.
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Saxena, Dhruv, Fischer, Anna, Dranczewski, Jakub, Ng, Wai Kit, Trivino, Noelia Vico, Schmid, Heinz, Raziman, T. V., Arnaudon, Alexis, Barahona, Mauricio, Hess, Ortwin, Moselund, Kirsten, and Sapienza, Riccardo
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LIGHT sources , *SEMICONDUCTOR lasers , *SIGNAL processing , *MACHINE learning , *RESONATORS - Abstract
Conventional lasers typically support a well‐defined comb of modes. Coupling many resonators together to form larger complex cavities enables the design of the spatial and spectral distribution of modes, for sensitive and controllable on‐chip light sources. Network lasers, formed from a mesh of dye‐doped polymer interconnecting waveguides, have shown great potential for random lasing with a highly sensitive and customizable lasing spectrum albeit suffering from gain bleaching. Here on‐chip semiconductor network lasers are introduced, and fabricated by etching an InP epilayer bonded onto a SiO2/Si${\rm SiO}_2/{\rm Si}$ wafer, as a reproducible, stable and designable random laser with a rich multimodal spectrum and low room temperature lasing threshold. Thresholds are observed as low as 60 μJcm−2$\umu{\rm J cm}^{-2}$ pulse−1${\rm pulse}^{-1}$ for InP networks with an optimum link width of 450 nm and thickness of 120 nm. It is further shown, both experimentally and numerically, that the network density directly affects the mode spatial distribution, and lasing modes are spatially localized over only 10–20 connected links in large dense networks. The InP network lasers are also stable to pump illumination and sensitive to small variations in the pump pattern. These studies lay the ground for the future design of random lasers tailored to the application in robust semiconductor platforms with impact for sensing, signal processing, cryptography and machine learning. [ABSTRACT FROM AUTHOR]
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- 2024
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33. Morbidity in giant omphaloceles: Predictive factors and management strategies.
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Martou, Laura and Saxena, Amulya K.
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UMBILICAL hernia , *BIRTH weight , *PULMONARY hypertension , *CONGENITAL disorders , *GESTATIONAL age - Abstract
Aim Methods Results Conclusion To identify predictors of morbidity in GO through an analysis of associated anomalies, defect characteristics and management strategies.PubMed and Ovid EMBASE databases were searched from 2013 to 2023. Primary end points assessed correlation of morbidity with gestational age (GA), birth weight (BW), eviscerated organs, defect size, associated anomalies and management strategy.Twenty articles were included for analysis with a total of 1009 GO. Median GA was 37 weeks (27–41), with a median BW of 2700 g (900–6000). 143 cardiovascular anomalies, 238 pulmonary anomalies, 98 musculoskeletal anomalies, 53 urogenital anomalies, 94 gastrointestinal anomalies, 11 neurological anomalies and 43 chromosomal anomalies were identified. 82 had unspecified additional anomalies, of which 20 and 17 were defined as major and minor, respectively. 123 neonates were managed with primary closure, 206 neonates with staged closure and 312 neonates with conservative treatment. Complications included sepsis, respiratory compromise, feeding dysfunction and closure‐related adverse events. Long‐term morbidity included home ventilation (n = 72), long‐term parental nutrition (n = 36), and delayed motor neurodevelopment (n = 21). Main predictors of morbidity were pulmonary hypertension/hypoplasia, major congenital anomalies, greater defect size and liver herniation.Key predictors of poor outcomes include the presence of additional congenital anomalies, defect size, liver herniation and pulmonary hypertension/hypoplasia. [ABSTRACT FROM AUTHOR]
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- 2024
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34. Pyridine‐2,6‐Dicarboxamide Proligands and their Cu(II)/Zn(II) Complexes Targeting Staphylococcus Aureus for the Attenuation of In Vivo Dental Biofilm.
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Chaudhary, Kajal, Agrahari, Bhumika, Biswas, Bhumika, Chatterjee, Niranjan, Chaudhary, Ayushi, Kumar, Ashwini, Sonker, Himanshu, Dewan, Sayari, Saxena, Deepanshi, Akhir, Abdul, Malhotra, Nidhi, Chopra, Sidharth, Misra, Santosh, Matheswaran, Saravanan, and Singh, Ritika Gautam
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- 2024
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35. Wnt/beta‐catenin modulation: A promising frontier in chronic kidney disease management.
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Saxena, Shubhangi, Dagar, Neha, Shelke, Vishwadeep, Puri, Bhupendra, and Gaikwad, Anil Bhanudas
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CHRONIC kidney failure , *LITERATURE reviews , *PSYCHOLOGICAL distress , *DISEASE management , *KIDNEY tubules - Abstract
Background Objectives Methods Results Conclusion Being amongst the leading factors of death and distress, chronic kidney disease (CKD) has affected around 850 million people globally. The Wnt/β‐catenin axis is vital for maintaining kidney homeostasis, from nephron generation to overall management. The β‐catenin growth factor is typically not expressed in the adult kidney; however, its expression is found to increase under stress and injury conditions. It is categorised as canonical and non‐canonical based on β‐catenin availability, which mounts promising targets for ameliorating CKD. Hence, modulation of the Wnt/β‐catenin signalling for CKD management is of utmost relevance.The primary aim of this review is to highlight the significance of targeting Wnt/β‐catenin signalling for CKD management.The literature review regarding the role of Wnt/β‐catenin signalling and therapies modulating it in CKD was conducted using PubMed, Scopus, Science Direct and Google Scholar.The current review summarises the pharmacological therapies modulating the Wnt/β‐catenin axis in CKD, building upon promising preclinical studies to establish a foundation for clinical studies in the future.Wnt/β‐catenin signalling is the evolution's most conserved pathway, which plays a pivotal role in CKD progression. Therapies modulating Wnt/β‐catenin signalling have emerged as effective means for alleviating CKD. [ABSTRACT FROM AUTHOR]
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- 2024
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36. Winter convective mixing regulates oceanic C : N : P ratios.
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Sahoo, Deepika, Saxena, Himanshu, Nazirahmed, Sipai, Khan, Mohammad Atif, Rai, Deepak Kumar, Sharma, Niharika, John, Sebin, Kumar, Sanjeev, Sudheer, A. K., Bhushan, Ravi, and Singh, Arvind
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OCEANIC mixing , *ORGANIC compounds , *WATER temperature , *WATER supply , *EDDIES - Abstract
Recent studies have challenged the validity of the Redfield ratio. It is proposed that physical and biogeochemical processes govern the geographical variations in carbon : nitrogen : phosphorus (C : N : P) ratios. However, this proposal remains to be examined through concurrent observations of C : N : P ratios with physical and biogeochemical processes in various marine reservoirs. Here, we sampled the Arabian Sea for its C, N, and P content in organic and inorganic pools during the winter monsoon. We analyzed the role of convective mixing, eddies, and N2 fixation to explain the variation in observed elemental ratios. Convective mixing injected the cold water and enhanced the supply of N and P nutrients in the top layer (surface to 50–75 m) of the northern Arabian Sea. This led to a decrease in the N : P and C : P ratios in the particulate organic matter in the northern region, but C : N : P increased equatorward, averaging 245 : 32 : 1 in the top layer of the Arabian Sea. The variation in the elemental ratios in the top layer is best explained by the changes in water temperature. N2 fixation contributed negligibly to the N : P ratio of the export flux. The substantial decrease in N : P ratios of nutrients in the subsurface waters is most likely caused by the denitrifying conditions in the Arabian Sea. As the processes of convective mixing and eddies are are prevalent oceanic processes, our observations underpin that the interplay of these processes leads to changes in the elemental ratios globally. [ABSTRACT FROM AUTHOR]
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- 2024
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37. Harnessing the Synergy of ZIF‐67 Derived Nanohybrid‐Based Immunosensing for sensitive Detection of Helicobacter pylori.
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Saxena, Kirti, Bhattacharyya, Puja, Deshwal, Akanksha, Shrivastava, Neeraj, Jain, Utkarsh, Malhotra, Bansi Dhar, Chakrabarti, Sandip, and Tripathi, Ravi Mani
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HELICOBACTER pylori ,GOLD nanoparticles ,PEPTIC ulcer ,HIGH temperatures ,STOMACH cancer - Abstract
Detection of Helicobacter pylori (H. pylori) infection, a significant risk factor for chronic gastritis, peptic ulcers, and gastric adenocarcinoma, poses a formidable challenge due to the lack of sensitive and selective sensing platforms. Herein, we report the synthesis of a zeolitic imidazolate framework‐67 (ZIF‐67) derived Co/Co3O4/C (CoNH) porous nanostructure, optimized for the electrochemical immunosensing of H. pylori‐specific antigen VacA. By calcining ZIF‐67 at elevated temperatures, we obtained CoNH with enhanced electroactivity and conductivity, crucial for signal enhancement. The synthesized CoNH was thoroughly characterized using SEM, TEM, XPS, Raman, and FT‐IR techniques. Further signal amplification was achieved by introducing gold nanoparticles (AuNPs) onto CoNH‐modified screen‐printed carbon electrodes. Systematic investigation at each modification stage led to an optimized immunosensing platform with high sensitivity and selectivity for VacA detection. The developed immunosensor demonstrated the capability to detect low concentrations of VacA (0.1 ng/ml) within a wide linear range (0.1–50 ng/ml) with long‐term stability. This highly sensitive and selective biosensor holds promise for early‐stage diagnosis of H. pylori infection and gastric cancer. [ABSTRACT FROM AUTHOR]
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- 2024
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38. Melatonin decreases human adipose tissue insulin sensitivity.
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Zambrano, Carolina, Garitaonaindia, Mireia Tena, Salmerón, Diego, Pérez‐Sanz, Fernando, Tchio, Cynthia, Picinato, María Cecilia, de Medina, Fermín Sánchez, Luján, Juan, Scheer, Frank A. J. L., Saxena, Richa, Martínez‐Augustin, Olga, and Garaulet, Marta
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INSULIN sensitivity ,ORAL drug administration ,WESTERN immunoblotting ,GASTRIC bypass ,BODY mass index ,MORBID obesity - Abstract
Melatonin is a pineal hormone that modulates the circadian system and exerts soporific and phase‐shifting effects. It is also involved in many other physiological processes, such as those implicated in cardiovascular, endocrine, immune, and metabolic functions. However, the role of melatonin in glucose metabolism remains contradictory, and its action on human adipose tissue (AT) explants has not been demonstrated. We aimed to assess whether melatonin (a pharmacological dose) influences insulin sensitivity in human AT. This will help better understand melatonin administration's effect on glucose metabolism. Abdominal AT (subcutaneous and visceral) biopsies were obtained from 19 participants with severe obesity (age: 42.84 ± 12.48 years; body mass index: 43.14 ± 8.26 kg/m2) who underwent a laparoscopic gastric bypass. AT biopsies were exposed to four different treatments: control (C), insulin alone (I) (10 nM), melatonin alone (M) (5000 pg/mL), and insulin plus melatonin combined (I + M). All four conditions were repeated in both subcutaneous and visceral AT, and all were performed in the morning at 8 a.m. (n = 19) and the evening at 8 p.m. (in a subsample of n = 12). We used western blot analysis to determine insulin signaling (using the pAKT/tAKT ratio). Furthermore, RNAseq analyses were performed to better understand the metabolic pathways involved in the effect of melatonin on insulin signaling. As expected, insulin treatment (I) increased the pAKT/tAKT ratio compared with control (p <.0001). Furthermore, the addition of melatonin (I + M) resulted in a decrease in insulin signaling as compared with insulin alone (I); this effect was significant only during the evening time (not in the morning time). Further, RNAseq analyses in visceral AT during the evening condition (at 8 p.m.) showed that melatonin resulted in a prompt transcriptome response (around 1 h after melatonin addition), particularly by downregulating the insulin signaling pathway. Our results show that melatonin reduces insulin sensitivity in human AT during the evening. These results may partly explain the previous studies showing a decrease in glucose tolerance after oral melatonin administration in the evening or when eating late when endogenous melatonin is present. [ABSTRACT FROM AUTHOR]
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- 2024
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39. The Dynamic Plasticity of P. aeruginosa CueR Copper Transcription Factor upon Cofactor and DNA Binding.
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Yasin, Ameer, Mandato, Alysia, Hofmann, Lukas, Igbaria‐Jaber, Yasmin, Shenberger, Yulia, Gevorkyan‐Airapetov, Lada, Saxena, Sunil, and Ruthstein, Sharon
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- 2024
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40. Once‐daily oral small‐molecule glucagon‐like peptide‐1 receptor agonist lotiglipron (PF‐07081532) for type 2 diabetes and obesity: Two randomized, placebo‐controlled, multiple‐ascending‐dose Phase 1 studies.
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Buckeridge, Clare, Tsamandouras, Nikolaos, Carvajal‐Gonzalez, Santos, Brown, Lisa S., Hernandez‐Illas, Martha, and Saxena, Aditi R.
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GLUCAGON-like peptide-1 receptor ,GLUCAGON-like peptide-1 agonists ,PEPTIDE receptors ,TYPE 2 diabetes ,WEIGHT loss ,COMPOSITE materials ,OBESITY - Abstract
Aim: To investigate the effects of lotiglipron (PF‐07081532), a once‐daily, oral small‐molecule glucagon‐like peptide‐1 receptor agonist, in participants with type 2 diabetes (T2D) and/or obesity. Materials and Methods: Two Phase 1 randomized, double‐blind, placebo‐controlled, multiple‐ascending‐dose studies were conducted to investigate the safety, tolerability, pharmacokinetics and pharmacodynamics of lotiglipron. Results: Across the studies, 74 participants with T2D were treated for 28 or 42 days, and 26 participants with obesity without diabetes were treated for 42 days, following randomization to placebo or lotiglipron (target doses 10–180 mg/day, with dose titration to higher target doses). Most adverse events were mild (89.6%), with nausea the most frequently reported in both studies. There were no clinically meaningful adverse trends noted in safety laboratory tests, vital signs, or electrocardiogram parameters. In participants with T2D, lotiglipron resulted in dose‐dependent reductions in mean daily glucose. The 180‐mg dose was associated with least squares mean decreases from baseline in glycated haemoglobin (−1.61% [90% confidence interval {CI} –2.08, −1.14] vs. −0.61% [−1.56, 0.34] for placebo) and body weight (−5.10 kg [90% CI –6.62, −3.58] vs. −2.06 kg [90% CI –4.47, 0.36] for placebo) after 42 days; a similar magnitude of weight loss was seen in participants with obesity. The observed pharmacokinetic profile supported once‐daily dosing. Conclusions: The profile of once‐daily lotiglipron with doses up to 180 mg, as observed in these two Phase 1 studies, indicated a safety and tolerability profile consistent with the mechanism of action, with dose‐dependent reductions in glycaemic indices (T2D) and body weight (both populations) after multiple doses. Clinicaltrials.gov identifier: NCT04305587, NCT05158244. [ABSTRACT FROM AUTHOR]
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- 2024
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41. Tunable Magnetic Coupling in Graphene Nanoribbon Quantum Dots.
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Jacobse, Peter H., Sarker, Mamun, Saxena, Anshul, Zahl, Percy, Wang, Ziyi, Berger, Emma, Aluru, Narayana R., Sinitskii, Alexander, and Crommie, Michael F.
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- 2024
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42. A systematic review of the impact of pulmonary thromboendarterectomy on health‐related quality of life.
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Raguragavan, Aarohanan, Jayabalan, Dujinthan, Dhakal, Sugam, and Saxena, Akshat
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PULMONARY hypertension ,CORONARY artery disease ,LUNG diseases ,CHRONIC diseases ,QUALITY of life - Abstract
Pulmonary thromboendarterectomy (PTE) is the current gold standard treatment for chronic thromboembolic pulmonary hypertension (CTEPH) and is a viable treatment option for chronic thromboembolic pulmonary disease (CTEPD). The progressive nature of both diseases severely impacts health‐related quality of life (HRQoL) across a variety of domains. This systematic review was performed to evaluate the impact of PTE on short‐ and long‐term HRQoL. A literature search was conducted on PubMed for studies matching the eligibility criteria between January 2000 and September 2022. OVID (MEDLINE), Google Scholar, EBSCOhost (EMBASE), and bibliographies of included studies were reviewed. Inclusion of studies was based on predetermined eligibility criteria. Quality appraisal and data tabulation were performed using predetermined forms. Results were synthesized by narrative review. The structure of this systematic review follows the PRISMA guidelines. This systematic review was prospectively registered in the PROSPERO register (CRD42022342144). Thirteen studies (2184 patients) were included. Within 3 months post‐PTE, HRQoL improved in both CTEPD and CTEPH as measured by disease‐specific and generic questionnaires. HRQoL improvements were sustained up to 5 years postoperatively in patients with CTEPH post‐PTE. PTE remains the gold standard for treating CTEPH and improving HRQoL. Residual pulmonary hypertension and comorbidities such as COPD and coronary artery disease decrement HRQoL over time. The impact of mPAP and PVR on HRQoL outcomes postoperatively remain ambiguous. Pulmonary thromboendarterectomy remains the gold standard for treating CTEPH and has shown to improve HRQoL outcomes at 3‐month sustaining improvements up to 5‐year postoperatively. Residual pulmonary hypertension and comorbidities hinder HRQoL outcomes post‐PTE. [ABSTRACT FROM AUTHOR]
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- 2024
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43. Role of Artificial Intelligence in Multinomial Decisions and Preventative Nutrition in Alzheimer's Disease.
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Soares Dias Portela, Ariana, Saxena, Vrinda, Rosenn, Eric, Wang, Shu‐Han, Masieri, Sibilla, Palmieri, Joshua, and Pasinetti, Giulio Maria
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- 2024
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44. A systematic review on detection and adaptation of concept drift in streaming data using machine learning techniques.
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Arora, Shruti, Rani, Rinkle, and Saxena, Nitin
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DATA mining software ,DATA mining ,DECISION theory ,ORGANIZATIONAL growth ,BIG data ,MACHINE learning - Abstract
Last decade demonstrate the massive growth in organizational data which keeps on increasing multi‐fold as millions of records get updated every second. Handling such vast and continuous data is challenging which further opens up many research areas. The continuously flowing data from various sources and in real‐time is termed as streaming data. While deriving valuable statistics from data streams, the variation that occurs in data distribution is called concept drift. These drifts play a significant role in a variety of disciplines, including data mining, machine learning, ubiquitous knowledge discovery, quantitative decision theory, and so forth. As a result, a substantial amount of research is carried out for studying methodologies and approaches for dealing with drifts. However, the available material is scattered and lacks guidelines for selecting an effective technique for a particular application. The primary novel objective of this survey is to present an understanding of concept drift challenges and allied studies. Further, it assists researchers from diverse domains to accommodate detection and adaptation algorithms for concept drifts in their applications. Overall, this study aims to contribute to deeper insights into the classification of various types of drifts and methods for detection and adaptation along with their key features and limitations. Furthermore, this study also highlights performance metrics used to evaluate the concept drift detection methods for streaming data. This paper presents the future research scope by highlighting gaps in the existing literature for the development of techniques to handle concept drifts. This article is categorized under:Algorithmic Development > Ensemble MethodsApplication Areas > Data Mining Software ToolsFundamental Concepts of Data and Knowledge > Big Data Mining [ABSTRACT FROM AUTHOR]
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- 2024
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45. Value co‐creation (VCC) and value co‐destruction (VCD) via open government data (OGD): Empirical case of Tanzania.
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Ishengoma, Fredrick, Shao, Deo, da Silva, Raphael Gouvea, Wiedenhoft, Guillherme Costa, Alexopoulos, Charalampos, Rizun, Nina, and Saxena, Stuti
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CUSTOMER cocreation ,TRANSPARENCY in government ,DATA privacy ,PUBLIC officers ,MARKETING - Abstract
Having emphasized upon the potential benefits of Open Government Data (OGD) initiatives via value derivation and innovation pursuits of the stakeholders, it falls in place to complement this line of OGD research in the specific case of Tanzania, a developing country, to support the inferences. Specifically, it is important to understand the manner in which OGD VCC‐one of the hinges of OGD initiatives‐ and OGD VCD‐a possible fall out of OGD initiatives‐happens to pass. Thus, a content analysis of the interviews of 15 public officials and managers associated directly with the management and operationationalization of OGD initiatives is being done to arrive at the conclusions. Thus, the interviewees aver that OGD Value Co‐creation (VCC) may be facilitated on top‐priority bases by consistent marketing efforts by the government as also the partnerships with the key stakeholders of the OGD ecosystem, and, among the prominent Value Co‐Destruction (VCD) factors may be counted the issues linked with data privacy and resource restriction. Literature on OGD VCC is at a nascent stage and the one on OGD VCD is evolving. As an atypical empirical validation case vis‐a‐vis the emerging OGD VCC‐VCD research, the study is an additional contribution to the extant literature with specific reference to the developing country's experiences. [ABSTRACT FROM AUTHOR]
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- 2024
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46. Synthesis and in vitro Antiproliferative Evaluation and Molecular Docking Studies of Novel Chalcone‐Phosphonates Derivatives as Anticancer Agents.
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Mishra, Shweta, Verma, Ekta, Debnath, Biplab, Chawla, Amit, Shama Khandige, Prasanna, Saxena, Bhagawati, Sahoo, Nityananda, and Jana, Pardip
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MOLECULAR docking ,ANDROGEN receptors ,ANTINEOPLASTIC agents ,PHOSPHONATES ,CHALCONES ,CELL lines - Abstract
Based on the wide range of pharmacological aspects related to organophosphates, a new type of chalcone‐phosphonate containing derivatives were synthesized by the reaction of dialkyl phosphite and substituted chalcones using anhydrous Mg(ClO4)2 at 80 °C under solvent‐free conditions. The resulting compounds were evaluated for anti‐proliferative activity in vitro against a panel of three human cancer cell lines: MCF7, HeLa, and A549 cell lines. Compound 3 l, 3 m, and 3 p exhibited anti‐proliferative activity against MCF7 and HeLa, with IC50 values of 1.12 μM, 1.63 μM, 1.09 μM and 1.29 μM, 1.44 μM, 2.40 μM respectively. The molecular docking study showed that the synthesized derivatives have good binding ability in the active site of the Vaccinia H1‐related (VHR) phosphatase (PDB: 3F81), PI3‐ kinase (PDB: 3R7Q), androgen receptor (PDB: 3V49) and VEGFR2 kinase (PDB: 3VHE). Finally, in silico pharmacokinetic (ADME) and toxicity studies revealed that compounds have the drug‐like feature for the favourable bioavailability. In conclusion, this work confirmed the potency of chalcone‐phosphonates derivatives for the further optimization of potential anti‐ proliferative agents. [ABSTRACT FROM AUTHOR]
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- 2024
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47. Influence of Build Height on Quality of Additively Manufactured Thermoplastic Polyurethane Parts.
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Gangwar, Sudhanshu, Saxena, Prateek, Biermann, Tobias, Steinnagel, Carl, and Lachmayer, Roland
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SELECTIVE laser sintering ,MEDICAL electronics ,COMPUTED tomography ,SURFACE roughness ,WEARABLE technology ,POLYURETHANES ,THERMOPLASTIC elastomers - Abstract
Due to geometrical degrees of freedom, low cost, and ease of realizing complex structures, polymer additive manufacturing (AM) has emerged exceptionally well. Even with rapid evolutionary growth, AM lacks sound quality mainly including inherent porosity and surface roughness compared to their counterparts (conventional manufacturing processes) due to the involvement of several printing parameters in AM processes. This quality‐based comparative assessment presents the influence of build/layer height on the porosity (using micro‐X‐ray computed tomography) and surface roughness (in build direction) of additively manufactured thermoplastic polyurethane (due to its versatile properties in applications like wearable electronics and biomedical) using three different polymer AM processes namely selective laser sintering, fused deposition modeling, and stereolithography. Along with porosity, an in‐depth pore characterization is also performed to understand the geometrical feature and severity of pores present in each sample of the AM process. Results are compared finally to make concluding remarks. [ABSTRACT FROM AUTHOR]
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- 2024
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48. Deep learning framework for peak detection at the intact level of therapeutic proteins.
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Nikita, Saxena, Bhattacharya, Sanghati, Manocha, Kriti, and Rathore, Anurag S.
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THERAPEUTIC use of proteins , *DEEP learning , *RECEIVER operating characteristic curves , *LIQUID chromatography-mass spectrometry , *CONVOLUTIONAL neural networks , *DISCRIMINANT analysis - Abstract
While automated peak detection functionalities are available in commercially accessible software, achieving optimal true positive rates frequently necessitates visual inspection and manual adjustments. In the initial phase of this study, hetero‐variants (glycoforms) of a monoclonal antibody were distinguished using liquid chromatography‐mass spectrometry, revealing discernible peaks at the intact level. To comprehensively identify each peak (hetero‐variant) in the intact‐level analysis, a deep learning approach utilizing convolutional neural networks (CNNs) was employed in the subsequent phase of the study. In the current case study, utilizing conventional software for peak identification, five peaks were detected using a 0.5 threshold, whereas seven peaks were identified using the CNN model. The model exhibited strong performance with a probability area under the curve (AUC) of 0.9949, surpassing that of partial least squares discriminant analysis (PLS‐DA) (probability AUC of 0.8041), and locally weighted regression (LWR) (probability AUC of 0.6885) on the data acquired during experimentation in real‐time. The AUC of the receiver operating characteristic curve also illustrated the superior performance of the CNN over PLS‐DA and LWR. [ABSTRACT FROM AUTHOR]
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- 2024
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49. Phase 2 study of the efficacy and safety of ponsegromab in patients with cancer cachexia: PROACC‐1 study design.
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Groarke, John D., Crawford, Jeffrey, Collins, Susie M., Lubaczewski, Shannon L., Breen, Danna M., Harrington, Magdalena A., Jacobs, Ira, Qiu, Ruolun, Revkin, James, Rossulek, Michelle I., and Saxena, Aditi R.
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- 2024
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50. Evaluation of new haematology analyser, XN‐31, for malaria detection in blood donors: A single‐centre study from India.
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Tiwari, Aseem Kumar, Goel, Shalini, Singh, Ganesh, Gahlot, Pawan Kumar, Saxena, Renu, Jadhav, Vaibhav, and Sethi, Monisha
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BLOOD donors ,MALARIA ,RAPID diagnostic tests ,HEMATOLOGY ,PUBLIC health - Abstract
Background and Objectives: Malaria continues to be a significant public health concern in India, with several regions experiencing endemicity and sporadic outbreaks. The prevalence of malaria in blood donors, in India, varies between 0.02% and 0.07%. Common techniques to screen for malaria, in blood donors and patients, include microscopic smear examination and rapid diagnostic tests (RDTs) based on antigen detection. The aim of this study was to evaluate a new fully automated analyser, XN‐31, for malaria detection, as compared with current practice of using RDT. Materials and Methods: Cross‐sectional analytical study was conducted to evaluate clinical sensitivity and specificity of new automated analyser XN‐31 among blood donors' samples and clinical samples (patients with suspicion of malaria) from outpatient clinic collected over between July 2021 and October 2022. No additional sample was drawn from blood donor or patient. All blood donors and patients' samples were processed by malaria rapid diagnostic test, thick‐smear microscopy (MIC) and the haematology analyser XN‐31. Any donor blood unit incriminated for malaria was discarded. Laboratory diagnosis using MIC was considered the 'gold standard' in the present study. Clinical sensitivity and specificity of XN‐31 were compared with the gold standard. Results: Fife thousand and five donor samples and 82 diagnostic samples were evaluated. While the clinical sensitivity and specificity for donor samples were 100%, they were 72.7% and 100% for diagnostic samples. Conclusion: Automated haematology analysers represent a promising solution, as they can deliver speedy and sensitive donor malaria screening assessments. This method also has the potential to be used for pre‐transfusion malaria screening along with haemoglobin estimation. [ABSTRACT FROM AUTHOR]
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- 2024
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