Publications by authors named "Ramalingam V"

Mammalian genomes contain millions of regulatory elements that control the complex patterns of gene expression. Previously, The ENCODE consortium mapped biochemical signals across many cell types and tissues and integrated these data to develop a Registry of 0.9 million human and 300 thousand mouse candidate cis-Regulatory Elements (cCREs) annotated with potential functions .

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Background: Left bundle branch pacing (LBBP) provides physiological activation with stable pacing parameters. However, there is a paucity of data on direct assessment of lead stability.

Objectives: The purpose of this study was to assess the stability of an LBBP lead using computed tomographic angiography (CTA) during medium-term follow-up and to correlate the anatomic location of the lead and electrophysiological characteristics of LBBP.

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Purpose: To evaluate the outcomes of early primary stent placement (within 30 days of liver transplantation) for hepatic artery stenosis (HAS).

Methods: Patients who underwent liver transplantation between 02/2001 and 02/2024 were evaluated for hepatic artery stenosis. Patients who underwent primary stent placement were selected and stratified based on the time from anastomosis to intervention.

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In an attempt to develop natural product-based anticancer agents, a series of novel epoxyazadiradione-thiazole hybrids () were synthesised and evaluated for their anticancer activity. All the synthesised derivatives were assessed for cytotoxic activity against a panel of human cancer and normal cell lines and the results showed that most of the compounds exhibited significant cytotoxic activity against cancer cells and as well some of the compounds showed less cytotoxicity against normal cells. In particular, compound showed potent cytotoxic activity against tongue cancer cell lines.

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The electrocatalytic synthesis of ammonia (NH) through the nitrogen reduction reaction (NRR) under ambient temperature and pressure is emerging as an alternative approach to the conventional Haber-Bosch process. However, it remains a significant challenge due to poor kinetics, low nitrogen (N) solubility in aqueous electrolytes, and the competing hydrogen evolution reaction (HER), which can significantly impact NH production rates and Faradaic efficiency (FE). Herein, a rationally designed boron-doped molybdenum sulfide (B-Mo-MoS) electrocatalyst is reported that effectively enhances N reduction to  NH with an onset potential of -0.

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Background: Left bundle branch area pacing (LBBAP) results in a right bundle branch (RBB) delay pattern because of preexcitation of the left bundle. The mechanism of right ventricular (RV) activation during LBBAP is largely unknown.

Objective: The aim of the study was to analyze the electrophysiologic characteristics of RV activation by mapping the RBB during LBBAP and its clinical correlation.

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Article Synopsis
  • The study focused on the genus Usnea, a group of edible lichens with medicinal uses, aiming to quantify usnic acid in three species using advanced analytical techniques.
  • Quantification methods (HPTLC-MS and UPLC-QTof-MSE) successfully identified usnic acid levels and sixteen different metabolites, showcasing excellent accuracy and linearity in results.
  • The research validates these methods according to ICH guidelines and highlights their potential in profiling herbal formulations containing Usnea spp. for various health applications.
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Background: Left bundle branch pacing (LBBP) provides stable pacing parameters and has been suggested as an alternative for right ventricular pacing and cardiac resynchronization therapy.

Objectives: The aim of the study was to assess the incidence and etiology of new-onset left ventricular dysfunction (NOLVD) following LBBP in patients with baseline normal left ventricular (LV) function and cardiomyopathy patients with normalized LV function.

Methods: Patients undergoing successful LBBP for symptomatic bradyarrhythmia or as an alternative to cardiac resynchronization therapy were included.

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Article Synopsis
  • * The use of protamine to reverse heparin after TAVR did not show a significant reduction in major bleeding compared to the control group, with similar rates of life-threatening bleeding and other complications.
  • * While protamine seems safe post-TAVR and doesn't increase stroke risk, more research is needed to confirm its effectiveness in reducing bleeding through a larger, multicentric study.
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Melochia corchorifolia is a well-known perennial herb and has been used in traditional medicine for the treatment of a wide number of diseases. However, the phytochemical investigation in the different organs of the M. corchorifolia was poorly understood.

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The incidence and prevalence of inflammatory-related diseases (IRDs) are increasing worldwide. Current approved treatments for IRDs in the clinic are combat against inhibiting the pro-inflammatory cytokines. Though significant development in the treatment in the IRDs has been achieved, the severe side effects and inefficiency of currently practicing treatments are endless challenge.

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Background: The global implementation of full-time telework became widespread during the new normal conditions following the pandemic, resulting in reduced physical activity (PA) among teleworkers and young adults. It is vital to comprehend how telehealth interventions favorably impact PA levels and overall well-being of young adults who face increasingly blurred boundaries between work and home life.

Objectives: The aim of this study is to examine the effect of telerehabilitation (TR) on PA levels and quality of life (QoL) in young adult teleworkers.

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Background: An intestinal stoma is a surgically created artificial opening in the abdominal wall that helps the large or small intestine end to divert the faecal matter for stoma patients with an underlying condition of inflammatory bowel disease and colorectal cancer. When a stoma is formed following surgery, one of the difficulties stoma patients confront has been identified as prolonged immobilization, which can eventually result in muscle inactivity that results due to their illness. Patients with stoma often experience an increase in pain and a decrease in quality of life.

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Article Synopsis
  • The study investigates the prevalence and impact of Human pegivirus-1 (HPgV-1) in Indian individuals living with HIV, as there is limited research on this topic.
  • Among 347 HIV treatment-naïve participants, 11% tested positive for HPgV-1, while only 1% of 100 healthy controls did; HPgV-1 genotype-2a was primarily found in those with HIV.
  • The research indicates a correlation between HPgV-1 viral load and CD4+ T-cell counts, hinting at HPgV-1's potential influence on HIV disease progression, though further longitudinal studies are necessary for a clearer understanding.
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Background: Adhesive capsulitis (AC) causes a spontaneous onset of discomfort and a progressive loss of shoulder mobility among type II diabetic patients. These patients experience severe loss of shoulder function, which impairs their day-to-day tasks and requires immediate care. According to scientific evidence, Gong's mobilization has an immediate effect on improving shoulder mobility.

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Purpose: To demonstrate the utility of intraoperative neuromonitoring (IONM) as an effective method of passive thermoprotection against cryogenic injury to neural structures during musculoskeletal and lymph node cryoablation.

Material And Methods: Twenty-nine patients (16 men; mean age among men, 68.6 years [range, 45-90 years]; mean age among women, 62.

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In most eukaryotes, mitochondrial organelles contain their own genome, usually circular, which is the remnant of the genome of the ancestral bacterial endosymbiont that gave rise to modern mitochondria. Mitochondrial genomes are dramatically reduced in their gene content due to the process of endosymbiotic gene transfer to the nucleus; as a result most mitochondrial proteins are encoded in the nucleus and imported into mitochondria. This includes the components of the dedicated mitochondrial transcription and replication systems and regulatory factors, which are entirely distinct from the information processing systems in the nucleus.

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Aims: As the future workload of interventional radiologists in the UK continues to expand, it is imperative that current IR trainees are given maximal opportunities to expand their skill sets. This paper argues that opportunities for involvement in international collaborative fieldwork should be expanded for interventional radiology trainees in the UK, as a means of maximising their future competency and positive contribution to the advancement of global healthcare. The study builds upon first-hand experience of the authors in the field and a review of the relevant literature.

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Background: Biventricular pacing is a well-established therapy for patients with heart failure (HF), left bundle branch block (LBBB) and left ventricular (LV) dysfunction. Left bundle branch pacing (LBBP) has emerged as an alternative to biventricular pacing.

Objectives: The aim of this study was to assess the retrograde conduction properties of the left bundle branch in patients with nonischemic cardiomyopathy and LBBB during LBBP and its clinical implications.

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Gastrointestinal (GI) bleeding is the most common GI diagnosis leading to hospitalization within the United States. Prompt diagnosis and treatment of GI bleeding is critical to improving patient outcomes and reducing high healthcare utilization and costs. Radiologic techniques including computed tomography angiography, catheter angiography, computed tomography enterography, magnetic resonance enterography, nuclear medicine red blood cell scan, and technetium-99m pertechnetate scintigraphy (Meckel scan) are frequently used to evaluate patients with GI bleeding and are complementary to GI endoscopy.

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Electrochemical carbon dioxide reduction reaction (ECORR) is a promising approach to synthesize fuels and value-added chemical feedstocks while reducing atmospheric CO levels. Here, high surface area cerium and sulfur-doped hierarchical bismuth oxide nanosheets (Ce@S-BiO) are develpoed by a solvothermal method. The resulting Ce@S-BiO electrocatalyst shows a maximum formate Faradaic efficiency (FE) of 92.

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Aims: This study aims to assess the impact that delivering an introductory interventional radiology (IR) lecture series has on the knowledge and perception of the specialty among medical students in a resource-limited setting with, until recently, no IR presence.

Materials And Methods: An introductory four-hour lecture series in IR was delivered to third-year medical students in Tanzania. Prior to and following the lecture series, participants completed a 27-item paper-based survey assessing their knowledge and perception of the specialty.

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The nature of vaccine response inferiority is not well studied in children living with HIV (CLHIV). The authors investigated Hepatitis B Virus (HBV) and Diphtheria/Pertussis/Tetanus toxoid (DPT) vaccination responses following primary immunization in CLHIV (n = 42) and healthy controls (HC) (n = 38) and the effect of an additional vaccine dose. Antibody responses, CD4 and HBV-specific T/B cells were analysed using CMIA/ELISA and flow-cytometry.

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