Publications by authors named "Ramesh T"

The most common genetic cause of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) is an intronic GC repeat expansion in C9orf72. The repeats undergo bidirectional transcription to produce sense and antisense repeat RNA species, which are translated into dipeptide repeat proteins (DPRs). As toxicity has been associated with both sense and antisense repeat-derived RNA and DPRs, targeting both strands may provide the most effective therapeutic strategy.

View Article and Find Full Text PDF

Purpose: To compare the listening effort using objective test (dual-task paradigm), parents report using abbreviated version of the Speech, Spatial and Quality questionnaire (SSQ-P10) and Teachers' Evaluation of Aural/Oral Performance of Children and Ease of Listening (TEACH), working memory and attention span between children using cochlear implants (CI) and age-matched peers with normal hearing sensitivity, and assess the relationship between listening effort and real-life benefit in children using CI.

Method: Group I included 25 children with normal hearing sensitivity. Group II included 25 children with bimodal cochlear implantation with bilateral severe to profound hearing loss.

View Article and Find Full Text PDF

Importance: The number of both US citizen and noncitizen international medical graduates (IMGs) practicing in the United States has grown substantially over the last two decades, but little is known about how these groups differ in clinical specialty and practice location.

Objective: To evaluate the effects of citizenship status on IMG specialty choice (primary care vs nonprimary care) and practice location (rural and health professional shortage areas [HPSAs]).

Design: To analyze the retrospective, cross sectional data between 2010 and 2019, we estimated a series of multivariate logistic regressions with year fixed effects after assessing trends in new physician specialty choice and practice location.

View Article and Find Full Text PDF

The increasing prevalence of multi-drug resistance in pathogenic bacteria has rendered antibiotics ineffective, necessitating the exploration of alternative antibacterial approaches. Consequently, research efforts have shifted towards developing new antibiotics and improving the efficacy of existing ones. In the present study, novel core shell graphene oxide@platinum nanoparticles (GRO@Pt-NPs) and their unchanging form have been synthesized using the two-step pulsed laser ablation in liquid (PLAL) technique.

View Article and Find Full Text PDF

To address physician shortages in the United States, Congress created the Conrad 30 visa waiver program allowing non-citizen international medical graduates to obtain visas to practice medicine in underserved areas. There is little information on whether states have effectively used the program. To fill the gap, we examined the growth and distribution of Conrad physicians between 2001 and 2020.

View Article and Find Full Text PDF

Objective: Hexanucleotide repeat expansions in the C9orf72 gene are the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). A large body of evidence implicates dipeptide repeats (DPRs) proteins as one of the main drivers of neuronal injury in cell and animal models.

Methods: A pure repeat-associated non-AUG (RAN) translation zebrafish model of C9orf72-ALS/FTD was generated.

View Article and Find Full Text PDF

Computational data-centric research techniques play a prevalent and multi-disciplinary role in life science research. In the past, scientists in wet labs generated the data, and computational researchers focused on creating tools for the analysis of those data. Computational researchers are now becoming more independent and taking leadership roles within biomedical projects, leveraging the increased availability of public data.

View Article and Find Full Text PDF

A novel library of naphthoquinone derivatives (3-5 aa) was synthesized and evaluated for their anticancer properties. Specifically, compounds 5 i, 5 l, 5 o, 5 q, 5 r, 5 s, 5 t, and 5 v demonstrated superior cytotoxic activity against the cancer cell lines that were studied. All the studied compounds exhibited a higher selectivity index (SI) and a favourable safety profile than the standard drug doxorubicin.

View Article and Find Full Text PDF

Objective: We propose a modular stretchable coil design using conductive threads and commercially available embroidery machines. The coil design increases customizability of coil arrays for individual patients and each body part.

Methods: Eight rectangular coils were constructed with custom-fabricated stretchable tinsel copper threads incorporated onto textile.

View Article and Find Full Text PDF

Platelets are known for their indispensable role in hemostasis and thrombosis. However, alteration in platelet function due to oxidative stress is known to mediate various health complications, including cardiovascular diseases and other health complications. To date, several synthetic molecules have displayed antiplatelet activity; however, their uses are associated with bleeding and other adverse effects.

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) persists to be one of the most devastating and deadliest malignancies globally. Recent research into the molecular signaling networks entailed in many malignancies has given some prominent insights that can be leveraged to create molecular therapeutics for combating HCC. Therefore, in the current communication, an in-silico drug repurposing approach has been employed to target the function of PTP4A3/PRL-3 protein in HCC using antidepressants: Fluoxetine hydrochloride, Citalopram, Amitriptyline, Imipramine, and Escitalopram oxalate as the desired ligands.

View Article and Find Full Text PDF

Obesity is one of the more complicated diseases, it can induce numerous life-threatening diseases mainly diabetes mellitus, cardiovascular disease, hypertension, and certain cancers. In this study, we assessed the efficacy of bacoside-A (a dammarane-type triterpenoid saponin derived from the plant Bacopa monniera Linn.) on the adipogenesis of 3T3-L1 preadipocytes.

View Article and Find Full Text PDF

Background: There is a scarcity of data regarding nosocomial infections in patients with COVID-19 treated with ECMO. This observational study from India aims to describe the epidemiology and microbiology of infections in patients with COVID-19 associated ECMO.

Methods: This is an ambi-directional observational study of COVID-19 ECMO patients admitted from April 2021 to June 2022 in a tertiary care hospital.

View Article and Find Full Text PDF

Sub-Saharan Africa is under-represented in global biodiversity datasets, particularly regarding the impact of land use on species' population abundances. Drawing on recent advances in expert elicitation to ensure data consistency, 200 experts were convened using a modified-Delphi process to estimate 'intactness scores': the remaining proportion of an 'intact' reference population of a species group in a particular land use, on a scale from 0 (no remaining individuals) to 1 (same abundance as the reference) and, in rare cases, to 2 (populations that thrive in human-modified landscapes). The resulting bii4africa dataset contains intactness scores representing terrestrial vertebrates (tetrapods: ±5,400 amphibians, reptiles, birds, mammals) and vascular plants (±45,000 forbs, graminoids, trees, shrubs) in sub-Saharan Africa across the region's major land uses (urban, cropland, rangeland, plantation, protected, etc.

View Article and Find Full Text PDF

Redox homeostasis is the vital regulatory system with respect to antioxidative response and detoxification. The imbalance of redox homeostasis causes oxidative stress. Nuclear factor-erythroid 2 p45-related factor 2 (Nrf2, also called Nfe2l2)/Kelchlike ECH-associated protein 1 (Keap1) signaling is the major regulator of redox homeostasis.

View Article and Find Full Text PDF

Radiofrequency coils are utilized during transmit and receive of MRI signals. Cable traps remove common-mode current from the coaxial cable shield, which helps improve the image quality and reduces risks of burns to the patient. Traditional cable traps use wounded coaxial cables that limit the flexibility in the design process.

View Article and Find Full Text PDF

Introduction: Epigenetic enzymes can interact with a wide range of genes that actively participate in the progression or repression of a diseased condition, as they are involved in maintaining cellular homeostasis. Sirtuins are a family of Class III epigenetic modifying enzymes that regulate cellular processes by removing acetyl groups from proteins. They rely on NAD as a coenzyme in contrast to classical histone deacetylases (HDACs) (Class I, II, and IV) that depend on Zn for their activation, linking their function to cellular energy levels.

View Article and Find Full Text PDF

This review explores the evolving landscape of antibody-based therapies in neuro-oncology, in particular, immune checkpoint inhibitors and immunomodulatory antibodies. We discuss their mechanisms of action, blood-brain barrier (BBB) penetration, and experience in neuro-oncological conditions. Evidence from recent trials indicates that while these therapies can modulate the tumor immune microenvironment, their clinical benefits remain uncertain, largely due to challenges with BBB penetration and tumor-derived immunosuppression.

View Article and Find Full Text PDF

Objective: Racial and socioeconomic disparities in neuro-oncological care for patients with brain tumors remain underexplored. This study aimed to analyze county-level disparities in glioblastoma (GBM) care in the United States, focusing on access to surgery and the use of adjuvant temozolomide chemotherapy and radiation therapy.

Methods: Using repeated cross-sectional data from the Surveillance, Epidemiology, and End Results 17 database; the Area Health Resources File; and the American Community Survey, from 2010 to 2019, the authors performed multivariate regression analyses to understand the associations between county-level racial and socioeconomic characteristics, as well as the rates of surgery performed, delays in surgery, and use of adjuvant chemotherapy and radiation therapy for newly diagnosed GBM.

View Article and Find Full Text PDF