53,530 results match your criteria: "Chennai; and Apollo Hospitals[Affiliation]"

Actinomycetes: A Source of Anticancer Metabolites.

Curr Med Chem

December 2024

Division of Microbiology, Entomology Research Institute, Loyola College, Chennai-600034, Tamil Nadu, India.

Microbes in general, actinomycetes in particular, produce a wide range of antibiotics with various biological activities such as anticancer, antimicrobial, anti-inflammatory, antituberculosis and enzyme inhibition. Actinomycetes are filamentous gram-positive bacteria found in both terrestrial and marine environments. Currently, antibiotics such as Rifamycin, Tetracycline, Kanamycin, Neomycin, Streptomycin and Clavulanic acid derived from actinobacteria are highly useful in the medical field.

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A COMPREHENSIVE REVIEW ON EARLY DETECTION OF DRUSEN PATTERNS IN AGE-RELATED MACULAR DEGENERATION USING DEEP LEARNING MODELS.

Photodiagnosis Photodyn Ther

December 2024

School of Computer Science and Engineering, Vellore Institute of Technology, Chennai. Electronic address:

Age-related Macular Degeneration (AMD) is a leading cause of visual impairment and blindness that affects the eye from the age of fifty-five and older. It impacts on the retina, the light-sensitive layer of the eye. In early AMD, yellowish deposits called drusen, form under the retina, which could result in distortion and gradual blurring of vision.

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The increasing prevalence of chronic diseases and their associated morbidities demands a deeper understanding of underlying mechanism and causative factors, with the hope of developing novel therapeutic strategies. Autophagy, a conserved biological process, involves the degradation of damaged organelles or protein aggregates to maintain cellular homeostasis. Disruption of this crucial process leads to increased genomic instability, accumulation of reactive oxygen species (ROS), decreased mitochondrial functions, and suppression of ubiquitination, leading to overall decline in quality of intracellular components.

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Current challenges in dental education- a scoping review.

BMC Med Educ

December 2024

Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 600077, India.

Introduction: This scoping review aimed to review the various challenges facing dental education. Dental education faces multiple institutional, student and faculty-based challenges. Institutional challenges include updating infrastructure resources, recruiting qualified faculty, and implementing administrative policies that enhance dental education.

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Lichen-associated endophytic Actinobacteria, particularly Streptomyces species, are recognized for their production of bioactive secondary metabolites with significant pharmaceutical potential. With the escalating prevalence of diseases, Streptomyces species are being investigated for its natural source of antimicrobial compounds for new antibiotics. This study focuses on the bioactive properties of secondary metabolites from lichen-associated endophytic Actinobacteria, focusing on Streptomyces glaucescens NTSB-37 isolated form lichen, Parmotrema perlatum (Huds.

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This article discusses a finite-source stock-dependent stochastic inventory system with multiple servers and a retrial facility. The system can store a maximum of S items, and the lifetime of each item is exponentially distributed. The primary customer arrives at the waiting hall from the finite source and receives service from multi-servers.

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The fungus Candida albicans is a prominent cariogenic fungal agent that works in association with Streptococcus mutans to accelerate the formation of oral cancer and tooth decay. This study evaluates caffeine-encapsulated titanium oxide nanoparticles (CF-TiO2 NPs) for their potential to prevent biofilm formation on teeth and enhance oral anticancer treatment by influencing apoptotic gene regulation. The synthesized CF-TiO2 NPs were characterized using UV, SEM, EDAX, and FTIR analyses, and their antioxidant activity was confirmed through free radical quenching studies.

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Glioblastoma (GBM) is one of the most common primary malignant brain tumors. Annually, there are about six instances recorded per 100,000 inhabitants. Treatment for GB has not advanced all that much.

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A probiotic is a live bacterium that, when given in sufficient proportions, helps to improve the host's gut health. Kimchi and pearl millet, two traditional foods, were used to isolate probiotic bacterial strains. This study's primary goals were to isolate, identify and analyse the microorganisms for potential probiotic traits, tolerance to gastrointestinal environments, and antimicrobial activity, and produce probiotic capsule.

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Investigating solid-state photoreactivity, driven by crystal packing, has been a major enduring research theme in Crystal Engineering. Trans-3-styryl pyridine (3-StPy), an unsymmetric olefin, is photo-stable. However, when converted to a series of salts, they exhibited solid-state photoreactivity under UV irradiation.

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Machine Learning Driven by Magnetic Resonance Imaging for the Classification of Alzheimer Disease Progression: Systematic Review and Meta-Analysis.

JMIR Aging

December 2024

Clinical Research, Telemedicine and Telepharmacy Centre, School of Medicinal and Health Products Sciences, University Camerino, Camerino, Italy.

Background: To diagnose Alzheimer disease (AD), individuals are classified according to the severity of their cognitive impairment. There are currently no specific causes or conditions for this disease.

Objective: The purpose of this systematic review and meta-analysis was to assess AD prevalence across different stages using machine learning (ML) approaches comprehensively.

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Natural serine proteases and their applications in combating amyloid formation.

ADMET DMPK

November 2024

Medical Bionanotechnology, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chettinad Health City, Kelambakkam, Chennai-603103, India.

Background And Purpose: Amyloidosis is a group of diseases including diabetes type II and neurological disorders, such as Alzheimer's disease, Parkinson's disease, prion disease, etc., where a common trait is observed; accumulation of misfolded protein at different parts of the body, especially the brain which manifests the typical symptoms like dementia, movement disorders, etc. These misfolded proteins, named amyloids, are protease resistant and thus it becomes difficult to manage these diseases in vivo.

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Clinicopathological and molecular insights into odontogenic tumors associated with syndromes: A comprehensive review.

World J Exp Med

December 2024

Department of Diagnosis in Pathology and Oral Medicine, Faculty of Dentistry, Universidad de la República, Montevideo 1600, Uruguay.

The association between genetic syndromes and odontogenic tumors encompasses several entities, reflecting the intricate interplay between genetic factors and the development of these lesions. The present study aimed to comprehensively investigate the associations between genetic syndromes and odontogenic tumors. We delineated the diverse spectrum of syndromic connections, including key syndromes such as Gardner syndrome, Gorlin syndrome, Schimmelpenning syndrome, and others.

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Vascular malformations (VMs) are congenital abnormalities of blood or lymphatic vessels, present at birth and growing proportionally with the individual. They are classified into types such as capillary, venous, lymphatic, and arteriovenous malformation (AVMs). Symptoms include discoloration, swelling, pain, or functional impairment, depending on the type and location.

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Background Diabetes mellitus, characterized by chronic hyperglycemia, often leads to severe hepatic dysfunction, including increased liver enzyme levels and histopathological changes in the liver. Streptozotocin (STZ)-induced diabetic rat models provide a valuable method for evaluating potential therapeutic agents that target hepatic complications. , a medicinal plant with known anti-diabetic properties, has been used traditionally for its hepatoprotective effects, although scientific evidence is limited.

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The epitome of periodontal plastic surgical procedures is to achieve coverage of the denuded root surface and flawless esthetics. Connective tissue graft (CTG) along with coronally advanced flap (CAF) is the most frequent approach, which is considered a gold standard remedy. The procurement of CTG requires a second surgical site morbidity.

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Rotations of teeth-a systematic review.

Front Oral Health

December 2024

Sri Ramachandra Medical College and Research Institute, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.

Background: Rotations are frequently evaluated through various assessment methods of crowding and arch dimension, with relatively few studies discussing the extent or direction of rotations and even fewer addressing the reliability of such assessments. This systematic review aims to comprehensively analyze existing classification systems for rotated teeth and assess rotation in anterior and posterior teeth, its clinical applicability, and its impact on retention and relapse.

Search Methods: Two investigators conducted a comprehensive search in six databases, namely, PubMed, Scopus, Ovid, LILACS, Web of Science, and Cochrane CENTRAL, up to 28 March 2024.

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The effects of inflammatory bowel disease (IBD) and the medications used to treat it on sexual and reproductive health can be significant, impacting the quality of life of patients across gender identities. This article presents insights from a roundtable discussion facilitated by the Crohn's and Colitis Young Adults Network (CCYAN) between young adult patients with IBD and medical professionals, including physicians, nurses, psychologists, and trainees/medical students. It underscores the distinction between sexual and reproductive health, emphasizing the need to address both aspects comprehensively.

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Background: Medication errors, especially in dosage calculation, pose risks in healthcare. Artificial intelligence (AI) systems like ChatGPT and Google Bard may help reduce errors, but their accuracy in providing medication information remains to be evaluated.

Aim: To evaluate the accuracy of AI systems (ChatGPT 3.

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Optimizing outcomes: Implementing enhanced recovery after surgery in orthopedic surgery.

World J Methodol

December 2024

Department of Orthopedics, Government Medical College, Omandurar Government Estate, Tamil Nadu, Chennai 600002, India.

In the realm of orthopedics, the adoption of enhanced recovery after surgery (ERAS) protocols marks a significant stride towards enhancing patient well-being. By embracing a holistic approach that encompasses preoperative counseling, dietary optimization, minimally invasive procedures, and early postoperative mobilization, these protocols have ushered in a new era of surgical care. Despite encountering hurdles like resistance to change and resource allocation challenges, the efficacy of ERAS protocols in improving clinical outcomes is undeniable.

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Background: Puberty menorrhagia, characterized by prolonged and excessive menstrual bleeding between menarche and 19 years of age, presents clinical challenges at adolescents and it is attributed to an immature hypothalamo-pituitary-ovarian axis, leading to sustained high estrogen levels and anovulation. This case report explores the efficacy of acupuncture as an adjunctive therapy for pubertal menorrhagia of a 16-year-old female with a history of irregular menstrual cycles and excessive bleeding for 41 days.

Methodology: Based on Traditional Chinese Medicine (TCM) tongue and pulse diagnostics of the patient, acupuncture needling at SP4 (Gongsun), PC 6 (Neiguan), KI 14 (Siman), SP 10 (Xuehai), LR 1 (Dadun), CV 6 (Qihai) was given once in a day for a month, each session lasting 20 min targeting to alleviate Liver blood stasis.

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Causal contextual bandits with one-shot data integration.

Front Artif Intell

December 2024

Robert Bosch Center for Data Science and Artificial Intelligence, Indian Institute of Technology Madras, Chennai, India.

We study a contextual bandit setting where the agent has access to causal side information, in addition to the ability to perform multiple targeted experiments corresponding to potentially different context-action pairs-simultaneously in one-shot within a budget. This new formalism provides a natural model for several real-world scenarios where parallel targeted experiments can be conducted and where some domain knowledge of causal relationships is available. We propose a new algorithm that utilizes a novel entropy-like measure that we introduce.

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Two new phenyl-sulfonyl-indole derivatives, namely, -{[3-bromo-1-(phenyl-sulfon-yl)-1-indol-2-yl]meth-yl}--(4-bromo-3-meth-oxy-phen-yl)benzene-sulfonamide, CHBrNOS, (), and ,-bis-{[3-bromo-1-(phenyl-sulfon-yl)-1-indol-2-yl]meth-yl}benzene-sulfonamide, CHBrNOS, (), reveal the impact of intra-molecular π-π inter-actions of the indole moieties as a factor not only governing the conformation of ,-bis-(1-indol-2-yl)meth-yl)amines, but also significantly influencing the crystal patterns. For , the crystal packing is dominated by C-H⋯π and π-π bonding, with a particular significance of mutual indole-indole inter-actions. In the case of , the mol-ecules adopt short intra-molecular π-π inter-actions between two nearly parallel indole ring systems [with the centroids of their pyrrole rings separated by 3.

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The studies conducted in this contribution are based on the analysis of the dynamics of a homogeneous network of five inertial neurons of the Hopfield type to which a unidirectional ring coupling topology is applied. The coupling is achieved by perturbing the next neuron's amplitude with a signal proportional to the previous one. The system consists of ten coupled ODEs, and the investigations carried out have allowed us to highlight several unusual and rarely related dynamics, hence the importance of emphasizing them.

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