Publications by authors named "Gowrishankar"

T-cell receptor (TCR) therapies are a promising modality for the treatment of cancers, with significant efforts being directed towards acute myeloid leukaemia (AML), a particularly challenging disease. Chimeric antigen receptor (CAR) T-cells targeting single surface antigens have shown remarkable efficacy for B-cell lymphoblastic leukaemia, lymphomas and multiple myeloma. However, AML presents formidable obstacles to the effectiveness of CAR T-cells due to the widespread expression of heterogenous leukaemia immunophenotypes and surface antigen targets additionally present on normal myeloid cells.

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Bacteriophages hold promise for combating pathogenic bacteria in the human intestinal tract, but their therapeutic potential is limited by harsh stomach conditions, including low pH and digestive enzymes. This study aimed to develop a natural protective mechanism for orally administering phages to treat gastric infections caused by Klebsiella aerogenes. Results revealed that free phages became inactive at pH 3 without protective measures.

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Early childhood caries (ECC), a severe form of dental caries, is exacerbated by the synergistic interaction between Streptococcus mutans and Candida albicans, leading to greater disease severity than their individual effects. This underscores the need for more targeted and potent therapeutic alternatives. Given the promising anti-infective properties of quaternary ammonium surfactants (QAS), this study explores the microbicidal properties of one such QAS, cetyltrimethylammonium chloride (CTAC), against both individual- and dual-species cultures of S.

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Skeletal dysplasias are a clinically and genetically heterogeneous group of rare disorders. Studies from large cohorts are essential to provide insights into the disease epidemiology, phenotypic spectrum, and mutational profiles. Here we enumerate additional 248 Indians from 197 families with a skeletal dysplasia, following a similar study earlier.

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Background: There is no consensus regarding the indication for postoperative radiotherapy (PORT) for T1- and T2-classified squamous cell carcinoma (SCC) of the external auditory canal (EAC) even with negative surgical margins. This study aimed to evaluate whether PORT provides additional benefits for these cases.

Methods: We collected retrospective data from fourteen international hospitals, including resected pT1- and pT2-classified EAC SCC with negative surgical margins.

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Article Synopsis
  • This text discusses the role of a specific bacterium in dental caries and its key characteristics that make it pathogenic, including acid production and biofilm formation.
  • The methanolic extract of a plant (MEPB) shows significant antibiofilm activity and reduces the virulence factors of the bacterium without harming its viability.
  • Additionally, MEPB has been tested for safety and found non-toxic, with specific fatty acids identified as active components contributing to its beneficial effects.
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Background: HIV infection is associated with a significant kidney disease burden. This study is aimed to screen for kidney disease in all HIV patients on highly active anti retroviral therapy (HAART), study clinico-histological correlation, and assess the impact of early diagnosis on the clinical course.

Materials And Methods: It was a prospective, longitudinal study done in a tertiary care hospital.

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Lysosomes and related precursor organelles robustly build up in swollen axons that surround amyloid plaques and disrupted axonal lysosome transport has been implicated in worsening Alzheimer's pathology. Our prior studies have revealed that loss of Adaptor protein-4 (AP-4) complex function, linked primarily to Spastic Paraplegia (HSP), leads to a similar build of lysosomes in structures we term "AP-4 dystrophies". Surprisingly, these AP-4 dystrophies were also characterized by enrichment of components of APP processing machinery, β-site cleaving enzyme 1 (BACE1) and Presenilin 2.

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Article Synopsis
  • There is a geographical variation in kidney disease patterns, prompting the need for renal biopsies to establish accurate diagnoses, yet there is limited data due to the lack of comprehensive biopsy registries.
  • A study analyzed 4,532 renal biopsies over two decades at a tertiary care hospital in southern India, finding that nephrotic syndrome was the most common clinical presentation and primary glomerulonephritis the most frequent histological diagnosis.
  • The findings highlight the importance of creating a uniform and regional renal biopsy registry in India to better track and understand the trends and variations of kidney diseases.
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. Neutrophil-rich hepatocellular carcinoma (HCC) is an extremely uncommon subtype of HCC with an overall incidence of <1%. Neutrophil-rich HCC shows poor cellular differentiation and sarcomatoid transformation in most patients.

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The aim of this study was to study the prevalence of obstructive sleep apnea syndrome in patients with nasal and nasopharyngeal pathologies. A total of 60 consenting patients between the age of 14 to 60 years with primary nasal and nasopharyngeal pathologies were taken up for the study. These patients underwent history taking, detailed clinical examination including BMI, diagnostic nasal endoscopy and overnight polysomnography.

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In many bacteria, the essential factors Rho and NusG mediate termination of synthesis of nascent transcripts (including antisense RNAs) that are not being simultaneously translated. It has been proposed that in Rho's absence toxic RNA-DNA hybrids (R-loops) may be generated from nascent untranslated transcripts, and genome-wide mapping studies in Escherichia coli have identified putative loci of R-loop formation from more than 100 endogenous antisense transcripts that are synthesized only in a Rho-deficient strain. Here we provide evidence that engineered expression in wild-type E.

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Article Synopsis
  • * Laboratory tests indicated he had acute kidney injury (AKI) along with low sodium, calcium, and potassium levels.
  • * A kidney biopsy showed significant damage and a genetic test confirmed Bartter syndrome, leading to treatment with IV hydration and supplements, resulting in recovery from AKI.
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Objective: To develop and validate a rapid, accurate, economical, effective and greenery RP-HPLC method for the determination of Zolmitriptan in tablet dosage form.

Material And Method: RP-HPLC method was developed using Luna (C) (4.6×250mm, 5μm) column and Sodium phosphate buffer (pH 4.

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Background: With the availability of whole slide digital scanners, fairly accurate glomerular diameter (GD) measurements are now possible on light microscopy. The value of these measurements in prognosis and diagnosis of immunoglobulin A nephropathy (IgAN) have not been studied widely. IgAN is a major cause of end-stage renal disease (ESRD) worldwide, and its progression is currently assessed using Oxford scores, serum creatinine, and 24-h urinary protein.

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Background: Acute tubular injury (ATI) is a common diagnosis on renal biopsy. There are no accepted parameters to assess the severity of injury or predict recovery. An objective histologic grading system would be of immense value in clinical practice.

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Introduction: Tuberculosis (TB) remains a pervasive infectious disease, and extrapulmonary manifestations account for a significant proportion of cases. Skeletal involvement is observed in about 10% of extrapulmonary TB instances. While spinal TB is relatively common, sacroiliac (SI) joint TB is a rare occurrence, particularly in immunocompetent individuals.

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Neuropeptides are ubiquitous in the nervous system. Research into neuropeptides has been limited by a lack of experimental tools that allow for the precise dissection of their complex and diverse dynamics in a circuit-specific manner. Opioid peptides modulate pain, reward and aversion and as such have high clinical relevance.

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Background: Pharmacologic immunosuppression regimes are commonly employed in stem cell clinical trials to mitigate host immune rejection and promote survival and viability of transplanted cells. Immunosuppression and cell survival has been extensively studied in retinal and spinal tissues. The applicability of stem cell therapy is rapidly expanding to other sensory organs such as the ear and hearing.

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Lysosomes are central to the maintenance of protein and organelle homeostasis in cells. Optimal lysosome function is particularly critical for neurons which are long-lived, non-dividing and highly polarized with specialized compartments such as axons and dendrites with distinct architecture, cargo, and turnover requirements. In recent years, there has been a growing appreciation for the role played by axonal lysosome transport in regulating neuronal development, its maintenance and functioning.

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Variants in more than 60 different genes, most of which code for podocyte-related proteins, have been found to be associated with monogenic forms of nephrotic syndrome (NS). Biallelic variants in DAAM2, a member of the formin family, were recently identified to cause autosomal recessive (AR) NS type 24 in four unrelated families with steroid-resistant nephrotic syndrome (SRNS). This case report represents only the fifth reported family of DAAM2-associated NS and the first from India, with two sibs who presented with a complex phenotype characterized by steroid-resistant nephrotic syndrome, short stature, dysmorphic facial features, deep-set toenails, myopia, increased thickness of the calvarium of the skull, and sloping ribs.

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Objectives: To establish audiological and other outcomes following cochlear implantation in humans and animals with eluting electrodes.

Methods: Systematic review and narrative synthesis. Databases searched (April 2023): MEDLINE, EMBASE, CENTRAL, ClinicalTrials.

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Article Synopsis
  • Information in the brain is transmitted via neurotransmitters released from long-range axons, and understanding this activity is crucial for linking brain function to behavior.* -
  • Current chemogenetic and optogenetic tools for manipulating these connections have limitations in sensitivity and precision.* -
  • The study identifies the ciliary opsin from Platynereis dumerilii (PdCO) as a highly effective tool for optogenetics, allowing precise control and reversible loss-of-function experiments in mammalian neurons and enabling detailed mapping of brain circuits in live animals.*
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Bacterial infections lack reliable, specific, and quick detection methods, which incur substantial costs to patients and caretakers. Our team conjugated the FDA-approved fluorescent dye indocyanine green (ICG) with a maltotriose sugar, resulting in two highly specific imaging agents (ICG-DBCO-1-Maltotriose and ICG-Amide-1-Maltotriose) for detecting bacterial infections. We then evaluated the two derivatives using fluorescence imaging (FLI), bioluminescence imaging (BLI), and photoacoustic imaging (PAI) in bacterial infection murine models.

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