Publications by authors named "Sundar G"

Article Synopsis
  • This protocol outlines a Cochrane Review focused on the timing of vitrectomy following open-globe injuries.
  • The main goal is to compare the effects of performing the surgery early versus later on patients' visual outcomes.
  • The review aims to provide evidence that could guide clinical decisions regarding the optimal timing for vitrectomy in such cases.
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Article Synopsis
  • The study investigates how Butea monosperma bark extract influences the bone-forming ability of rat adipose-derived mesenchymal stem cells (rADMSCs) and its connection to the Wnt/β-catenin signaling pathway.
  • Characterization techniques identified bioactive compounds in the extract, and in vitro tests assessed the extract's effects on cell growth, differentiation, and gene expression related to bone formation.
  • Results showed that the extract promotes osteogenic differentiation in rADMSCs by activating the Wnt/β-catenin pathway, suggesting its potential as a therapeutic option for improving bone regeneration.
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Introduction: This article explores the potential challenges in implementing a national-level standardized curriculum for physician associate (PA) programs in India, an initiative under the directions of the National Commission for Allied and Healthcare Professionals Act of 2021.

Methods: Initiated in August 2023, a multistage process began with emailing a draft curriculum for review to key stakeholders, followed by a virtual meeting on September 3. Key stakeholders, including faculty from various universities, participated in focus group discussions (FGDs) at the International Association of Physician Associate Educators and the Indian Association of Physician Assistants annual conference on September 21, 2023, in Gandhinagar.

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Article Synopsis
  • * Timely surgical intervention is crucial to reduce the risk of serious complications like endophthalmitis, which can affect visual outcomes.
  • * A review of 15 studies showed that repairs done within 24 hours significantly lowered the odds of endophthalmitis, but visual outcomes were similar regardless of repair timing.
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Introduction: Rare paediatric eye diseases (RPEDs) threaten both vision and life. Recently, rare diseases were recognised as a global public health agenda, with children specified as a priority in the World Health Organization's VISION 2020 against avoidable visual loss.

Method: We conducted a review through a query of online databases (PubMed, Embase and Cochrane Library).

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Background: To investigate the geometric morphological differences of the lacrimal punctum by analyzing its shape in relation to age and sex in a normal population.

Methods: 960 high-magnification slit-lamp images were obtained from 320 puncta of normal asymptomatic Indian individuals across eight decades of life. Using advanced geometric morphometric techniques, including Elliptic Fourier Analysis and Principal Component Analysis, the intricate details of the lacrimal punctum's shape in a diverse population sample were categorized by age and sex.

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Topic: Sympathetic ophthalmia (SO) is a sight-threatening granulomatous panuveitis caused by a sensitizing event. Primary enucleation or primary evisceration, versus primary repair, as a risk management strategy after open-globe injury (OGI) remains controversial.

Clinical Relevance: This systematic review was conducted to report the incidence of SO after primary repair compared with that of after primary enucleation or primary evisceration.

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Purpose: This study aimed to examine the differences in the biofilms and physical deposits on Crawford stents compared to large-diameter stents.

Methods: A prospective interventional study was performed on a series of patients undergoing external or endoscopic dacryocystorhinostomy (DCR) and endoluminal lacrimal duct recanalization (ELDR) with either Crawford or large-diameter stents. All the Crawford stents were retrieved at six weeks and the large-diameter ones at eight weeks following the surgical intervention.

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Traditionally, for patients who are poor candidates for surgery and/or radiotherapy, palliative chemotherapy is often offered but with significant toxic side effects. However, recent advancements in our understanding of tumor biology and molecular genetics have brought new understanding to the molecular pathways of certain tumors and cancers. This has ushered in a new era of precision medicine specific to a tumor or cancer treatment pathway (targeted therapy) or directed to host-tumor responses (immunotherapy).

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Topic: This study reports the effect of systemic prophylactic antibiotics (and their route) on the risk of endophthalmitis after open globe injury (OGI).

Clinical Relevance: Endophthalmitis is a major complication of OGI; it can lead to rapid sight loss in the affected eye. The administration of systemic antibiotic prophylaxis is common practice in some health care systems, although there is no consensus on their use.

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Article Synopsis
  • - The study aimed to investigate the anatomical variations of mucosal folds at the junction of the canaliculus and lacrimal sac, emphasizing their potential clinical importance.
  • - Researchers examined 12 lacrimal drainage systems from six cadavers, discovering that 83.3% exhibited variations in mucosal folds that could be misinterpreted as obstructions during procedures.
  • - Findings indicated that the most common variation was an inferior 180° fold, highlighting the need for clinicians to recognize these folds to avoid complications during surgery and suggesting further research on their anatomy and function.
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Antibiotics that have multiple cellular targets theoretically reduce the frequency of resistance evolution, but adaptive trajectories and resistance mechanisms against such antibiotics are understudied. Here we investigate these in methicillin resistant Staphylococcus aureus (MRSA) using experimental evolution upon exposure to delafloxacin (DLX), a novel fluoroquinolone that targets both DNA gyrase and topoisomerase IV. We show that selection for coding sequence mutations and genomic amplifications of the gene encoding a poorly characterized efflux pump, SdrM, leads to high DLX resistance, circumventing the requirement for mutations in both target enzymes.

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We present a patient who presented with an orbital mass lesion which was a metastatic lesion from a porocarcinoma of the scalp with progressive deterioration of the patient.A 78-year-old male presented with functional decline and a rapidly growing scalp lesion of 3 months duration. In addition to the scalp lesion, Computed Tomography showed an incidental finding of a left lateral orbital wall tumour.

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Purpose: This study aimed to report the practice patterns while performing revision dacryocystorhinostomy (RevDCR) amongst oculoplastic surgeons from several regions across the globe.

Methods: The survey consisted of 41 specific questions sent via email that contained a link to the Google forms. The questions covered several aspects of the respondents' practice profiles, evaluation methods, pre-operative choices, surgical techniques, and follow-up preferences while dealing with patients of prior failed DCRs.

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Thyroid eye disease (TED) is characterized by enlargement of extraocular muscles, an increase in retrobulbar fat, orbital fibrosis, and fluctuations in plasma thyroid hormone levels in most patients, often associated with raised autoantibody titers. The occurrence of orbital space conflict compromises the orbital perfusion, unchecked progression of which results in irreversible loss of visual acuity and visual fields. The quantitative assessment of orbital perfusion can be done by measurement of blood flow velocities in the superior ophthalmic vein (SOV), ophthalmic artery (OA), central retinal artery (CRA), and posterior ciliary artery by color Doppler imaging.

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The rise of primary topical monotherapy with chemotherapeutic drugs and immunomodulatory agents represents an increasing recognition of the medical management of ocular surface squamous neoplasia (OSSN), which may replace surgery as the standard of care in the future. Currently, there is no consensus regarding the best way to manage OSSN with no existing guidelines to date. This paper seeks to evaluate evidence surrounding available treatment modalities and proposes an approach to management.

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Article Synopsis
  • Severe eye injuries that cause no light perception usually mean a bad chance of seeing again, and doctors might need to remove the eye.
  • New surgical techniques have made it better for patients with these serious injuries, but there are still no clear rules on when and how to perform the surgery.
  • To help, experts created guidelines with 16 recommendations to improve how doctors diagnose and treat these severe eye injuries.
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Importance: Ocular trauma terminology should be periodically updated to enable comprehensive capturing and monitoring of ocular trauma in clinical and research settings.

Objective: To update terminology for globe and adnexal trauma.

Design, Setting, And Participants: A 2-round modified Delphi survey was conducted from January 1 to July 31, 2021, using an expert panel, including 69 ophthalmologists identified through their membership in ophthalmology (globe and adnexal trauma) societies.

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Nasolacrimal duct (NLD) damage is associated in the majority of type II and III naso-orbito-ethmoid (NOE) fractures. Our study aims to investigate the efficacy and safety of prophylactic NLD intubation in the setting of facial fractures, by comparing incidence of postoperative epiphora and wound infection. A retrospective matched control study was conducted on all patients with surgically treated facial fractures from 2008 to 2013 (  = 280) (IRB ref number: DSRB 2013/01198).

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In-depth comparative degradome analysis of two domesticated grape cultivars with diverse secondary metabolite accumulation reveals differential miRNA-mediated targeting. Small (s)RNAs such as micro(mi)RNAs and secondary small interfering (si) often work as negative switches of gene expression. In plants, it is well known that miRNAs target and cleave mRNAs that have high sequence complementarity.

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A 49-year-old Indian male presented with rapidly progressive vision loss 1 day after receiving the second dose of BNT162b2 mRNA coronavirus disease 2019 (COVID-19) vaccine (Pfizer-BioNTech, NY, USA). The eye had secondary angle closure glaucoma, bullous retinal detachment, and massive intraocular hemorrhage. Ultrasound showed an ill-defined subretinal mass with moderate internal reflectivity.

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Unlabelled: The burden of atrial fibrillation (AF) is increasing worldwide. It is often asymptomatic, with stroke being the first manifestation in some. AF burden in the community and the practice of stroke prophylaxis has not been studied in India.

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