Publications by authors named "Datta I"

Purpose: To demonstrate the process and results of an equity analysis of a reproductive health association.

Description: A series of quantitative surveys and qualitative interviews were conducted with employees of Planned Parenthood League of Massachusetts (PPLM), assessing different aspects of equity. Amaka Consulting and Evaluation Services, LLC, an external consulting agency, analyzed the results and provided recommendations for improvements.

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Objective: In this study, we aimed to evaluate mir-31-5p as a prognostic biomarker of keloid disease (KD) recurrence using a retrospective, treatment naïve, surgical cohort of head and neck KD cases from Henry Ford Health.

Methods: Using a tissue microarray, mir-31-5p expression was measured with miRNAscope, and mir-31-5p cell positivity was determined with QuPath. Logistic regression was used to test the association between mir-31-5p positive cells and KD recurrence at 1 year.

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The performance of all active photonic devices today is greatly limited by loss. Here, we show that one can engineer a low loss path in a metal-clad lossy multi-mode waveguide while simultaneously achieving high-performance active photonic devices. We leverage non-Hermitian systems operating beyond the exceptional point to enable the redistribution of losses in a multi-mode photonic waveguide.

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Background: A key factor in the propagation of α-synuclein pathology is the compromised protein quality control system. Variations in membrane association and astrocytic uptake between different α-synuclein forms suggest differences in exocytosis or membrane cleavage, potentially impacting the secretome's influence on dopaminergic neurons. We aimed to understand differences in protein degradation mechanisms of astrocytes for both wild-type (WT) and mutant forms of α-synuclein, specifically during periods of reduced degradation efficiency.

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Introduction: Acute kidney injury (AKI) is common in the perioperative setting and associated with poor outcomes. Whether clinical decision support improves early management and outcomes of AKI on surgical units is uncertain.

Methods: In this cluster-randomized, stepped-wedge trial, 8 surgical units in Alberta, Canada were randomized to various start dates to receive an education and clinical decision support intervention for recognition and early management of AKI.

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Article Synopsis
  • Glioblastoma (GBM) tumors show diverse genetic and transcriptional profiles, leading to significant variations in how cancer stem cells (CSCs) respond to standard treatments like radiation and temozolomide (TMZ).
  • Through targeted proteomics and RNA sequencing, the study found that while differentiating CSCs to an astrocytic state activates certain oncogenic pathways and retains some "stemness," it also increases resistance to TMZ treatment.
  • The transcriptional response to treatments was largely influenced by the p53 status of the cells, revealing that both mutant and wild-type p53 models activated a DNA-damage related immune response, indicating potential pathways for improving GBM treatment strategies.
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  • Multiple sclerosis (MS) is the most common inflammatory neurodegenerative disease affecting young adults, manifesting primarily as relapsing-remitting MS (RRMS) and progressing to secondary progressive MS (SPMS) or existing as primary progressive MS (PPMS), which has a steady decline without remission.
  • Researchers conducted a study using global untargeted metabolomics to identify specific altered metabolites in the serum of patients with RRMS, PPMS, and healthy subjects (HS), analyzing a total of 235 metabolites.
  • The study found significant differences in metabolite profiles between RRMS and HS (22 metabolites) as well as PPMS and HS (28 metabolites), and identified key metabolic pathways involved, suggesting that these unique altered metabolites could help differentiate
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Quantum hardware has the potential to efficiently solve computationally difficult problems in physics and chemistry to reap enormous practical rewards. Analogue quantum simulation accomplishes this by using the dynamics of a controlled many-body system to mimic those of another system; such a method is feasible on near-term devices. We show that previous theoretical approaches to analogue quantum simulation suffer from fundamental barriers which prohibit scalable experimental implementation.

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  • Fabrication imperfections like roughness and discontinuities in photonic wire waveguides can severely impact their performance, leading to high insertion losses and reduced production efficiency.
  • The study focuses on a new platform using silicon nano-pillars to create a sub-wavelength grating waveguide that exhibits robustness to these types of discontinuities.
  • Experimental results show that this innovative waveguide design experiences significantly lower transmission losses, measuring less than 2.2 dB for certain discontinuities, making it a promising solution for developing low-loss optical waveguides across the telecommunication spectrum.
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The genus is a widespread pathogen that includes more than 30 Gram-negative species, many of which are opportunistic bacteria. Aeromonas species are naturally distributed in various aquatic sources. Infectious processes in marine animals such as fish usually develop under stressful conditions, and when their immune systems are weakened.

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Lower population of dopaminergic (DA) neurons is known to increase susceptibility to Parkinson's disease (PD), and our earlier study showed a lower yield of DA neurons in Leucine-Rich Repeat Kinase Isoleucine 1371 Valine (LRRK2-I1371V) mutation-carrying PD patient-derived induced Pluripotent Stem Cells (iPSCs). Although the role of Sonic Hedgehog (SHH) in DA neurogenesis of floor plate cells (FPCs) is known, the effect of LRRK2 mutations on SHH responsiveness of FPCs impacting DA neuronal yield has not been studied. We investigated SHH responsiveness of FPCs derived from LRRK2-I1371V PD patient iPSCs with regard to the expression of SHH receptors Patched1 (Ptch1) and Smoothened (Smo), in conjunction with nuclear Gli1 (glioma-associated oncogene 1) expression, intracellular Ca rise, and cytosolic cyclic adenosine monophosphate (cAMP) levels upon SHH induction.

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The Parkin (PRKN) gene mutation is prevalent in young-onset Parkinson's disease (PD), typically emerging before age 30, accompanied by early motor symptoms. Induced pluripotent stem cells (iPSCs) were derived from peripheral blood mononuclear cells of a PD patient with an exon 3 deletion in PRKN using Sendai-virus reprogramming. PD diagnosis was confirmed via the Unified Parkinson's Disease Rating Scale (UPDRS).

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Critical coupling in integrated photonic devices enables the efficient transfer of energy from a waveguide to a resonator, a key operation for many applications. This condition is achieved when the resonator loss rate is equal to the coupling rate to the bus waveguide. Carefully matching these quantities is challenging in practice, due to variations in the resonator properties resulting from fabrication and external conditions.

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Prostaglandin E2 (PGE2) signals differently through 4 receptor subtypes (EP1-EP4) to elicit diverse physiologic/pathologic effects. We previously reported that PGE2 via its EP3 receptor reduces cardiac contractility and male mice with cardiomyocyte-specific deletion of the EP4 receptor (EP4 KO) develop dilated cardiomyopathy. The aim of this study was to identify pathways responsible for this phenotype.

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Article Synopsis
  • Multiple sclerosis (MS) is a common neurodegenerative disease in young adults that leads to neurological decline, with relapsing-remitting MS (RRMS) being the most prevalent type, which may progress to primary progressive MS (PPMS).
  • The study aimed to identify distinct serum metabolite profiles that differentiate RRMS and PPMS patients from healthy subjects (HS) using advanced metabolomics techniques.
  • Results showed specific metabolic alterations in both RRMS and PPMS when compared to HS, suggesting potential metabolic biomarkers that could help in distinguishing between the different forms of MS and normal health.
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Cellular senescence is a conserved biological process that plays a crucial and context-dependent role in cancer. The highly heterogeneous and dynamic nature of senescent cells and their small numbers in tissues make in vivo mechanistic studies of senescence challenging. As a result, how multiple senescence-inducing signals are integrated in vivo to drive senescence in only a small number of cells is unclear.

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Unresolved and uncontrolled inflammation is considered a hallmark of pathogenesis in chronic inflammatory diseases like multiple sclerosis (MS), suggesting a defective resolution process. Inflammatory resolution is an active process partially mediated by endogenous metabolites of dietary polyunsaturated fatty acids (PUFA), collectively termed specialized pro-resolving lipid mediators (SPMs). Altered levels of resolution mediators have been reported in several inflammatory diseases and may partly explain impaired inflammatory resolution.

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  • The study analyzed the epigenetic changes in gliomas from 132 patients over time, comparing initial and recurrent tumors in both IDH-wildtype (IDHwt) and IDH-mutant (IDHmut) types.
  • IDHwt gliomas remained stable in their epigenetic profile, while IDHmut gliomas showed a notable decrease in DNA methylation, making their profiles more similar to IDHwt tumors.
  • The research identified HOXD13 as crucial for the evolution of IDHmut tumors and found that treatment led to changes in the tumor microenvironment, like increased blood vessel formation and T-cell presence, mimicking the characteristics of IDHwt gliomas.
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Total internal reflection (TIR) governs the guiding mechanisms of almost all dielectric waveguides and therefore constrains most of the light in the material with the highest refractive index. The few options available to access the properties of lower-index materials include designs that are either lossy, periodic, exhibit limited optical bandwidth or are restricted to subwavelength modal volumes. Here, we propose and demonstrate a guiding mechanism that leverages symmetry in multilayer dielectric waveguides as well as evanescent fields to strongly confine light in low-index materials.

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The role of serum procalcitonin (PCT) and C-reactive protein (CRP) levels in the diagnosis of spontaneous bacterial peritonitis (SBP) with decompensated chronic liver disease (CLD) has been a subject of debate. The purpose of this cross-sectional, observational study was to evaluate the significance of CRP and PCT for the diagnosis and prediction of SBP in decompensated CLD patients. Fifty patients with ascites due to decompensated CLD were enrolled conveniently from the department of Gastrointestinal, Hepatobiliary and Pancreatic disorders (GHPD), BIRDEM General Hospital, Bangladesh from July 2019 to July 2020.

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Though hypertriglyceridemia is an established risk factor for acute pancreatitis, the relationship between hypertriglyceridemia and pancreatitis-associated complications remains controversial. Serum triglyceride could be a simple, routinely available investigation if predictability of the outcome can be validated. Due to scarcity of related studies in Bangladesh, this study aimed to evaluate the role of serum triglyceride to detect severity and outcome in acute pancreatitis.

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