Publications by authors named "Rajiv Jain"

Purpose: To evaluate the anatomic and visual outcomes and safety profile of initial Indian eyes with neovascular age-related macular degeneration (nAMD) treated with intravitreal injection (IVI) of brolucizumab.

Methods: This retrospective multicentric, real-world study enrolled consecutive eyes with nAMD that were treated with IVI brolucizumab after it was launched in India in October 2020. Data collected for each eye included best-corrected visual acuity (BCVA), central subfield thickness (CSFT), subretinal fluid (SRF), and intraretinal fluid (IRF) status at 6, 12, and 24 months follow-up.

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The usage of histology to investigate immune cell diversity in tissue sections such as those derived from the central nervous system (CNS) is critically limited by the number of fluorescent parameters that can be imaged at a single time. Most immune cell subsets have been defined using flow cytometry by using complex combinations of protein markers, often requiring four or more parameters to conclusively identify, which is beyond the capabilities of most conventional microscopes. As flow cytometry dissociates tissues and loses spatial information, there is a need for techniques that can retain spatial information while interrogating the roles of complex cell types.

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The extracellular matrix (ECM) of the central nervous system (CNS) is an interconnected network of proteins and sugars with critical roles in both homeostasis and disease. In neurological diseases, excessive ECM deposition and remodeling impact both injury and repair. CNS lesions of multiple sclerosis (MS), a chronic inflammatory and degenerative disease, cause prominent alterations of the ECM.

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Article Synopsis
  • Immunofluorescence histology traditionally limits the study of immune cells to four fluorescence parameters, making it hard to analyze multiple immune cell subsets accurately in tissues, unlike flow cytometry which sacrifices spatial details.
  • A new method, called histoflow cytometry, allows for expanding fluorescence parameters on common microscopes, enabling the identification and analysis of single cells while retaining spatial information.
  • This technique was successfully applied to study immune cell populations in mouse spinal cords affected by autoimmune diseases, revealing distinct localization patterns and frequencies of immune cells compared to healthy controls.
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  • Microglia are crucial for protecting the central nervous system and removing harmful substances, but their function declines with age, leading to increased neurological issues like multiple sclerosis.
  • Researchers used advanced techniques on spinal cord samples from young and middle-aged mice to understand how aging affects microglial behavior, particularly after injury.
  • They discovered that an increase in osteopontin in older mice worsens neurodegeneration, while reducing this protein can help alleviate inflammation and damage in aging-related conditions.
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  • The left coronary artery divides into two main branches, creating an anatomical structure known as the triangle of Brocq and Mouchet between the conus arteriosus and left auricle, with the base formed by the great cardiac vein.
  • A study analyzed 40 cadaveric hearts, revealing that the triangle of Brocq and Mouchet was present in 92.5% of specimens, with the most common type being closed (51.3%).
  • Understanding the various patterns and relationships of the triangle's boundaries is important for clinicians, as it may improve outcomes in interventional cardiology procedures and reduce complications.
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  • The study assessed otoscopic abnormalities, hearing status, and radiological changes in the ear opposite to the one affected by chronic otitis media in 300 patients.
  • More than 30% of patients had some abnormality in the contralateral ear, with different rates of abnormalities observed in types of chronic otitis media (Mucosal and Squamosal).
  • Surprisingly, 77% of patients still had normal hearing in the contralateral ear, showing that chronic otitis media can affect both ears, emphasizing the need for thorough evaluations.
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To study various parameters, including Middle ear risk index (MERI) and their correlation with outcome of middle ear surgery. The study was conducted from September 2015 to May 2017 in Department of Otolaryngology at our institute. It included 185 cases of safe type of chronic suppurative otitis media.

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Oxidative stress promotes tissue injury in the central nervous system in neurological disorders such as multiple sclerosis (MS). To protect against this, antioxidant enzymes including superoxide dismutase-1 (SOD1), heme oxygenase-1 (HO-1), peroxiredoxin-5 (PRDX5) and glutathione peroxidase-4 (GPX4) may be upregulated. However, whether antioxidant enzyme elevation in mouse models of neurodegeneration corresponds to their expression in human diseases such as MS requires investigation.

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Remyelination failure in multiple sclerosis (MS) contributes to progression of disability. The deficient repair results from neuroinflammation and deposition of inhibitors including chondroitin sulfate proteoglycans (CSPGs). Which CSPG member is repair-inhibitory or alters local inflammation to exacerbate injury is unknown.

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B cells represent a relatively minor cell population within both the healthy and diseased central nervous system (CNS), yet they can have profound effects. This is emphasized in multiple sclerosis, in which B cell-depleting therapies are arguably the most efficacious treatment for the condition. In this Review, we discuss how B cells enter and persist in the CNS and how, in many neurological conditions, B cells concentrate within CNS barriers but are rarely found in the parenchyma.

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Objective: The Buffalo Concussion Physical Examination (BCPE) is a brief, but pertinent physical examination designed for the subacute, outpatient assessment of concussion. The purpose of this study was to perform the BCPE on a larger sample and derive a scoring system to identify children at risk for Persistent Post-Concussive Symptoms (PPCS, recovery ≥30 days).

Methods: This prospective, observational cohort study from September 2016 to March 2019 was performed at three university-affiliated concussion clinics.

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To study the prognostic significance of neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) in head and neck cancers. The study included 170 cases of histopathologically diagnosed head and neck cancer patients and 80 control subjects. NLR and PLR of patients with head and neck cancers were compared to the control group.

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  • The neck is a critical area containing essential structures that are highly vulnerable to trauma due to its proximity and lack of bone protection, often leading to emergencies.
  • A study focused on patients with penetrating neck injuries over one year highlighted the importance of effective management, noting that 60% of these injuries were due to homicide, and that immediate surgical intervention was performed on all patients without any deaths.
  • Out of 15 patients, 53.3% required procedures like tracheostomy, with post-operative complications in 4 patients, and the average hospital stay was around 9.2 days, reinforcing the necessity for rapid treatment according to ATLS guidelines.
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B cell fate decisions within a germinal center (GC) are critical to determining the outcome of the immune response to a given antigen. Here, we characterize GC kinetics and B cell fate choices in a response to the autoantigen myelin oligodendrocyte glycoprotein (MOG) and compare the response with a standard model foreign antigen. Both antigens generate productive primary responses, as evidenced by GC development, circulating antigen-specific antibodies, and differentiation of memory B cells.

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There is mounting scientific evidence showing the importance of innate biological rhythms on disease onset and progression. Perhaps the most important of these is the circadian rhythm, a cycle of oscillations lasting approximately 24 h. Recent work has shown that circadian rhythms are intrinsically linked to the immune system in a bidirectional fashion, and that disruption of these cycles can contribute to changes in pathology and quality of life (including fatigue, mood, and disability).

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Neutrophils contribute to demyelinating autoimmune diseases, yet their phenotype and functions have been elusive to date. Here, we demonstrate that ICAM1 surface expression distinguishes extra- from intravascular neutrophils in the mouse CNS during experimental autoimmune encephalomyelitis (EAE). Transcriptomic analysis of these 2 subpopulations indicated that neutrophils, once extravasated, acquire macrophage-like properties, including the potential for immunostimulation and MHC class II-mediated antigen presentation.

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The spectroscopic properties of Tellurium Calcium Zinc Niobium oxide Borate (TCZNB) glasses of composition (in mol%) 10TeO  + 15CaO + 5ZnO + 10 Nb O  + (60 - x)B O  + Nd O (x = 0.1, 0.5, 1.

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Variegate porphyria (VP) is an autosomal dominant disorder of porphyrin metabolism. We report a case of a 21-year-old male collegiate athlete who complained of recurrent headache and fatigue. Extensive testing after initial presentation failed to identify a cause.

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Once activated, T cells gain the ability to access both healthy and inflamed nonlymphoid tissues. They are then reactivated to remain in the tissue and exert their effector function only if they encounter their specific Ag. In this study, we set out to determine if the same is true for B cells using a mouse model of CNS autoimmunity that incorporates both T and B cell recognition of a myelin autoantigen.

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Article Synopsis
  • The Veteran's Affairs Office of Specialty Care launched four initiatives to enhance specialty care and established a center for evaluating these efforts.
  • The evaluation utilized interviews and surveys, following two implementation frameworks, to gather both qualitative and quantitative data on how the initiatives were used.
  • Findings highlighted various barriers and facilitators impacting implementation, leading to refinements in the process and ongoing evaluations of other initiatives.
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Background: Declines in methicillin-resistant Staphylococcus aureus (MRSA) health care associated infections (HAIs) were previously reported in Veterans Affairs acute care (2012), spinal cord injury (SCIU) (2011), and long-term-care facilities (LTCFs) (2012). Here we report continuing declines in infection rates in these settings through September 2015.

Methods: Monthly data entered into a national database from 127 acute care facilities, 22 SCIUs, and 133 LTCFs were evaluated for trends using negative binomial regression.

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  • Multiple sclerosis (MS) is a chronic inflammatory disease of the CNS caused by autoimmune responses that target myelin, and current animal models do not effectively involve B cells which also play a role in the disease.
  • A new fusion protein, MOGtag, has been created to include elements that enhance its purification and solubility; it allows for the study of B cell responses to the native form of myelin oligodendrocyte glycoprotein (MOG).
  • The protocol described for producing large quantities of pure MOGtag or MOG1-125 can yield over 200 mg of protein, leading to an autoimmune response with pathogenic B cells, providing a better model for MS research.
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  • The study assessed complications within 30 days of a confirmed hospital-onset Clostridium difficile infection across 127 Veterans Health Administration facilities from July 2012 to June 2015.
  • The rates of severe complications noted were 2.7% for ICU admissions, 0.5% for colectomy surgeries, and 0.4% for deaths due to the infection.
  • The findings were published in the journal Infect Control Hosp Epidemiol in 2016.
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