Publications by authors named "Sahay S"

Molecular electronics exhibiting resistive-switching memory features hold great promise for the next generation of digital technology. In this work, electrosynthesis of ruthenium polypyridyl nanoscale oligomeric films is demonstrated on an indium tin oxide (ITO) electrode followed by an ITO top contact deposition yielding large-scale (junction area = 0.7 × 0.

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Mycophenolic acid (MPA) is an immunosuppressive/antibiotic drug, biologically produced by the fermentation of Penicillium brevicompactum as its secondary metabolite using submerged (SmF) and solid-state (SSF) fermentation processes. In this study, the SSF of  (MTCC 1999) was done in optimised conditions to enhance MPA yield. Substrates including basmati and non-basmati rice, barley, oats, cornflakes, rice bran, and wheat bran were 80% moistened and sterilised.

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Context: Specialty palliative care remains inaccessible for many with serious illness, especially in rural areas. Telehealth may be one solution.

Objectives: To describe how telehealth increases access to specialty palliative care, describe facilitators and barriers to its use, and summarize evidence of patient benefits.

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This study includes cultivation in artificial saline medium (ASM). With the aim of harvesting the bulk biomass, an experiment was set up at a bench scale to evaluate the best flocculation technique with the least compromising biomass and lipid loss. The flocculation efficiencies for the biomass have been studied using the auto-, bio-, and chemical-flocculation methods.

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Background: To ensure the acceptability and effectiveness of potential Multipurpose Prevention Technologies (MPTs), understanding user needs, and preferences are crucial to inform the design of MPTs. This article aims to explore the perceptions towards potential MPT use and to explore the needs of multiple stakeholders in India within their social and behavioural contexts.

Methods: A qualitative multicentric study was conducted in three Indian states-Maharashtra, Karnataka, and Tamil Nadu.

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Objective The aim of this study was to assess the knowledge and awareness of guided dentistry among various dental professionals.  Materials and methods The study was carried out as a cross-sectional descriptive observational study among dental professionals (students, practitioners, and teaching faculty in academic institutions) in North India. A web-based electronic survey using Google Forms was designed to obtain the responses of participants toward awareness of guided dentistry and its applications in dentistry.

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Dielectric Modulated Field-Effect Transistors (DMFETs) have emerged as promising candidates for label-free bioanalyte detection. However, the inherent short-channel effects in conventional DMFETs increase their static power dissipation significantly and limit their scalability and sensitivity. Therefore, FETs based on alternate conduction mechanism such as tunneling (TFETs), which are immune to the short-channel effects, appear to be a lucrative alternative to the MOSFETs for biosensing application.

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Article Synopsis
  • Schizophrenia involves significant brain function changes, with insulin signaling pathways, especially AKT, playing a key role in its development.
  • This study found increased mRNA levels of AKT1-3 in neurons from schizophrenia patients, while total AKT protein levels remained unchanged or lower, indicating a potential disconnect between gene expression and protein presence.
  • The research also revealed sex-specific differences in AKT activity, additional changes in related signaling components, and heightened expression of the glucose metabolism regulator FOXO1, suggesting potential compensatory mechanisms in response to insulin signaling issues.
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Protein kinases are critical components of a myriad biological processes and strongly associated with various diseases. While kinase research has been a point of focus in biomedical research for several decades, a large portion of the kinome is still considered understudied or "dark," because prior research is targeted towards a subset of kinases with well-established roles in cellular processes. We present an empirical and in-silico hybrid workflow to extend the functional knowledge of understudied kinases.

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Schizophrenia is a neuropsychiatric illness characterized by altered neurotransmission, in which adenosine, a modulator of glutamate and dopamine, plays a critical role that is relatively unexplored in the human brain. In the present study, postmortem human brain tissue from the anterior cingulate cortex (ACC) of individuals with schizophrenia ( = 20) and sex- and age-matched control subjects without psychiatric illness ( = 20) was obtained from the Bronx-Mount Sinai NIH Brain and Tissue Repository. Enriched populations of ACC pyramidal neurons were isolated using laser microdissection (LMD).

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  • Despite advancements in treatments for pulmonary arterial hypertension (PAH), patients still face high rates of illness and death.
  • Sotatercept, a new therapy that inhibits activin signaling, has been approved for PAH and shows promising efficacy and safety.
  • The review provides insights into how Sotatercept works, its benefits for patient wellbeing and survival, and its safety profile to better inform readers about this innovative treatment.
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Phenotypic and genomic diversity in Arabidopsis thaliana may be associated with adaptation along its wide elevational range, but it is unclear whether elevational clines are consistent among different mountain ranges. We took a multi-regional view of selection associated with elevation. In a diverse panel of ecotypes, we measured plant traits under alpine stressors (low CO partial pressure, high light, and night freezing) and conducted genome-wide association studies.

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Background: The role of serotonin in pulmonary arterial hypertension has been extensively studied in recent decades, with preclinical data strongly indicating involvement in disease pathogenesis; however, clinical studies have yielded mixed results.

Methods: ELEVATE-2 was a phase 2b dose-ranging, randomised, double-blind, placebo-controlled, multicentre trial investigating rodatristat ethyl as a treatment for patients with pulmonary arterial hypertension. The study was conducted at 64 sites across 16 countries in Europe and North America.

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Photosynthetic organisms must cope with rapid fluctuations in light intensity. Nonphotochemical quenching (NPQ) enables the dissipation of excess light energy as heat under high light conditions, whereas its relaxation under low light maximizes photosynthetic productivity. We quantified variation in NPQ kinetics across a large sorghum (Sorghum bicolor) association panel in four environments, uncovering significant genetic control for NPQ.

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The disruption of brain energy metabolism, leading to alterations in synaptic signaling, neural circuitry, and neuroplasticity, has been implicated in severe mental illnesses such as schizophrenia, bipolar disorder, and major depressive disorder. The therapeutic potential of ketogenic interventions in these disorders suggests a link between metabolic disturbances and disease pathology; however, the precise mechanisms underlying these metabolic disturbances, and the therapeutic effects of metabolic ketogenic therapy, remain poorly understood. In this study, we conducted an in silico analysis of transcriptomic data to investigate perturbations in metabolic pathways in the brain across severe mental illnesses via gene expression profiling.

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Gene expression alterations in postmortem schizophrenia tissue are well-documented and are influenced by genetic, medication, and epigenetic factors. The Wingless/Integrated (WNT) signaling pathway, critical for cell growth and development, is involved in various cellular processes including neurodevelopment and synaptic plasticity. Despite its importance, WNT signaling remains understudied in schizophrenia, a disorder characterized by metabolic and bioenergetic defects in cortical regions.

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This study showcases successfully switchable approaches to accomplish the C3-aryl methylation and C3- amino methylation of privileged nitrogen-containing pharmaceutical compounds "imidazopyridines" with distinct amines, which surmounts the long-standing requirement for a superfluous directing group. These two transformations manifest pronounced regio- and chemo-divergent behavior, successfully demonstrating unprecedented multicomponent "abnormal Mannich and Mannich-type" reactions. The remarkable environmentally benign protocol has been efficiently extended to concise the synthesis and late-stage derivatization.

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Background: Oral treprostinil is a prostacyclin analogue approved to treat pulmonary arterial hypertension (PAH) by delaying disease progression and improving exercise capacity. Higher doses of oral treprostinil correlate with increased treatment benefit. Titrations may be challenging due to common side effects of prostacyclin-class therapies.

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Article Synopsis
  • Pulmonary arterial hypertension (PAH) is a severe condition that requires intense treatment and monitoring, with ongoing efforts to improve low survival rates despite advancements over the past 30 years.
  • Recent research has introduced a new treatment pathway targeting activin signaling inhibition, which offers a different approach than traditional therapies that focus primarily on vasodilation.
  • This review explores how this new treatment fits into current PAH management strategies in the U.S., emphasizing its use in patients with existing health issues.
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  • Mannheimia haemolytica is a key pathogen in pneumonic pasteurellosis, causing significant economic losses for small ruminant farmers, but its epidemiology is under-researched, complicating control efforts.
  • A study characterized 27 M. haemolytica isolates via capsular typing and various molecular methods, revealing that serotype A2 was the most prevalent (74%), with specific virulence genes being widely present.
  • The research identified 11 sequence types (STs), including new ones, and showed high variability among isolates, indicating the complexity of managing this disease in sheep.
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Background: Morbidity and mortality in pulmonary arterial hypertension (PAH) remain high. Activation of platelet-derived growth factor receptor, colony stimulating factor 1 receptor, and mast or stem cell growth factor receptor kinases stimulates inflammatory, proliferative, and fibrotic pathways driving pulmonary vascular remodelling in PAH. Seralutinib, an inhaled kinase inhibitor, targets these pathways.

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Non-photochemical quenching (NPQ) protects plants from photodamage caused by excess light energy. Substantial variation in NPQ has been reported among different genotypes of the same species. However, comparatively little is known about how environmental perturbations, including nutrient deficits, impact natural variation in NPQ kinetics.

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