Publications by authors named "Sahni N"

Background: Development of ventilator-associated pneumonia (VAP) is attributed to the microaspiration of pooled secretions around the cuff of airway devices. Despite the emphasis on the use of endotracheal tubes (ET) with subglottic secretion (SS) drainage ports to prevent VAP, the quality of the evidence for this recommendation remains moderate. This prospective observational study analyzed microbiological concordance between SS and endotracheal aspirate (ETA) cultures to generate further evidence in this regard.

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Background: Accurate localization of premacular hemorrhages (PMHs) is crucial as treatment strategies vary significantly based on whether the hemorrhage resides within the vitreous gel, subhyaloid space, or beneath the internal limiting membrane (ILM). This report outlines the clinical features, diagnostic findings, and treatment outcomes in a patient diagnosed with a PMH secondary to suspected Valsalva retinopathy.

Methods: This is a retrospective interventional case report.

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Introduction: Glomerular filtration rate (GFR) estimation equations have not been extensively validated in the Indian population. Preliminary data showed that the widely used creatinine-based Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) 2009 significantly overestimated GFR in Indians. Newer estimated GFR (eGFR) equations based on creatinine and cystatin C, omitting the race, have been recently proposed.

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Therapeutic strategies targeting the DNA damage response, such as poly (ADP-ribose) polymerase (PARP) inhibitors (PARPi), have revolutionized cancer treatment in tumors deficient in homologous recombination (HR). However, overcoming innate and acquired resistance to PARPi remains a significant challenge. Here, we employ a genome-wide CRISPR knockout screen and discover that the depletion of ubiquitin-activating enzyme E1 (UBA1) enhances sensitivity to PARPi in HR-proficient ovarian cancer cells.

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The influence of polar, water-miscible organic solvents (POS) on protein structure, stability, and functional activity is a subject of significant interest and complexity. This study examines the effects of acetonitrile (ACN), a semipolar, aprotic solvent, on the solvation properties of blocked Ace-Gly-X-Gly-Nme tripeptides (where Ace and Nme stands for acetyl and N-methyl amide groups respectively and X is any amino acid) through extensive molecular dynamics simulations. Individual simulations were conducted for each peptide, encompassing five different ACN concentrations within the range of χ = 0.

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  • Researchers suggest a new network-based method to identify immunomodulatory genetic variants linked to COVID-19 by analyzing protein interaction networks.
  • They discovered that variants affecting specific protein interactions can significantly impact immune response, even if they don't reach usual statistical significance in genome-wide studies.
  • Their findings highlight the importance of myeloid and T cell subsets in the immune response and point out a specific variant that disrupts a key protein interaction related to interferon signaling.
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Background & Aims: Improvement in the nutritional status of patients with acute-on-chronic liver failure (ACLF) may lead to reduction in morbidity and mortality. This study assessed the impact of dietician-supported outpatient intensive nutrition therapy (OINT) on survival and frailty in patients with alcohol-related ACLF METHODS: Seventy patients with alcohol-related ACLF (Asia Pacific Association for the Study of the Liver [APASL] criteria) and frailty were randomized 1:1 to receive standard medical therapy (SMT) plus OINT (intervention) vs SMT (control) alone. The primary outcome was an improvement in survival at 3 months.

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  • Widespread sequencing has identified thousands of missense variants linked to diseases, creating a challenge in assessing their functional impact at scale.
  • A new high-throughput imaging platform was developed to evaluate the effects of 3,448 missense variants across over 1,000 genes, revealing that mislocalization of proteins is a frequent outcome.
  • Mislocalization affects about one-sixth of pathogenic variants and is mainly caused by issues with protein stability and membrane insertion, which can influence disease severity and help interpret uncertain variants.
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The prior authorization (PA) process consumes time and money on the part of patients, providers, and payers. While some research shows substantial possible savings in the PA process, identifying what different groups can do is not as well known. Thus, organizations have struggled to capture this opportunity.

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Background: Dietary knowledge, perception and practices may have a role in determining the nutritional status of patients with inflammatory bowel disease (IBD). However, the assessment of these patterns has infrequently been done in developing countries. We aimed to evaluate patients with ulcerative colitis (UC) about their dietary beliefs, practices and changes after the diagnosis.

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  • * It aims to fill gaps in existing research by focusing on clinicians' views about which care sites are suitable and by analyzing all possible locations for care shifts along with their potential savings.
  • * A large survey was conducted among various healthcare professionals, examining over 5000 care activities to determine how much care could be safely moved to different settings, with data analyzed between April 2022 and October 2023.
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  • The study investigates protein-rich inclusions in neurodegeneration, noting that current iPSC models lack reproducibility and speed in developing these inclusions.
  • Researchers created new iPSC models that allow for rapid production of CNS cells with proteins prone to aggregation, enabling the tracking of inclusions at a single level.
  • They identified various inclusion types with differing effects on neuron survival and isolated proteins that could influence toxicity, paving the way for improved drug development for neurodegenerative diseases.
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US health care administrative spending is approximately $1 trillion annually. A major operational area is the financial transactions ecosystem, which has approximately $200 billion in spending annually. Efficient financial transactions ecosystems from other industries and countries exhibit 2 features: immediate payment assurance and high use of automation throughout the process.

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Objective: To determine whether enteral melatonin decreases the incidence of delirium in critically ill adults.

Methods: In this randomized controlled trial, adults were admitted to the intensive care unit and received either usual standard care alone (Control Group) or in combination with 3mg of enteral melatonin once a day at 9 PM (Melatonin Group). Concealment of allocation was done by serially numbered opaque sealed envelopes.

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Most human Transcription factors (TFs) genes encode multiple protein isoforms differing in DNA binding domains, effector domains, or other protein regions. The global extent to which this results in functional differences between isoforms remains unknown. Here, we systematically compared 693 isoforms of 246 TF genes, assessing DNA binding, protein binding, transcriptional activation, subcellular localization, and condensate formation.

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Introduction: Poor nutritious diet is a major risk element for non-communicable diseases (NCD), which are of considerable public health concern. Given the diverse dietary patterns in India, precise determination of nutrient consumption is crucial for disease management. The present study assessed the dietary intake of sodium, potassium, protein, and phosphorus among North Indians.

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  • Single-cell technologies allow detailed studies of how specific molecules define cell traits, but challenges like sparse data and cell differences make it tough to model biological variability.
  • SCORPION is introduced as a new tool that reconstructs gene regulatory networks from single-cell RNA-sequencing data, providing reliable comparisons across different populations.
  • In tests, SCORPION outperformed existing techniques and effectively identified differences in regulatory networks related to cancer, helping to reveal important factors that could affect patient survival.
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Background: Polycystic ovarian syndrome (PCOS) is a multifaceted endocrine disorder of women of reproductive age with a multifactorial aetiology. Despite much research, there is still inconclusive data on the impact of dietary, lifestyle and socio-economic factors on PCOS aetiology. Thus, the present study explored the association of PCOS with diet, eating behaviour, other lifestyle and socio-economic factors.

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  • The study aims to identify host anti-viral factors that can help control SARS-CoV-2 infection, which have been overlooked in previous research focused mainly on pro-viral factors.* -
  • Using a genome-wide CRISPR dropout screen, the researchers found several underappreciated host factors, such as components of V-ATPases, ESCRT, and N-glycosylation pathways, which affect viral entry and replication.* -
  • Key findings include the identification of the cohesin complex as an anti-viral pathway and the transcription factor KLF5, which is linked to severe COVID-19 symptoms, shedding light on the genetic and molecular interactions that influence the severity of the disease.*
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  • Some types of cancers have problems with proteins that are supposed to help with DNA, and this can make them grow badly.
  • Researchers tested different cancer cells by blocking certain proteins (PRMT1, PRMT4, and PRMT5) and found this stopped a key protein (ATR) from working properly.
  • Combining the blockage of PRMT5 with a type of cancer treatment (PARP inhibitors) was found to help fight tumors without being too harmful to healthy cells.
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Defects in homologous recombination DNA repair (HRD) both predispose to cancer development and produce therapeutic vulnerabilities, making it critical to define the spectrum of genetic events that cause HRD. However, we found that mutations in BRCA1/2 and other canonical HR genes only identified 10%-20% of tumors that display genomic evidence of HRD. Using a networks-based approach, we discovered that over half of putative genes causing HRD originated outside of canonical DNA damage response genes, with a particular enrichment for RNA-binding protein (RBP)-encoding genes.

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