Publications by authors named "Niranjan B"

Article Synopsis
  • * The study explored the role of OCT1 in a CRPC xenograft model resistant to AR signaling inhibitors and chemotherapy, finding that OCT1 influences genes linked to cell migration and immune regulation, particularly highlighting the importance of the gene CTBP2.
  • * Results suggest that targeting CTBP2 could provide a new therapeutic strategy for treating aggressive AR-positive CRPC by potentially enhancing immune response and tackling tumor progression.
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There are diverse phenotypes of castration-resistant prostate cancer, including neuroendocrine disease, that vary in their sensitivity to drug treatment. The efficacy of BET and CBP/p300 inhibitors in prostate cancer is attributed, at least in part, to their ability to decrease androgen receptor (AR) signalling. However, the activity of BET and CBP/p300 inhibitors in prostate cancers that lack the AR is unclear.

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Purpose: A comparative evaluation of fluoride release and re-chargeability in conventional glass ionomer cement (GIC) (type II), Pediatric GIC (type IX), and Cention-N-an in vitro study at an interval of first, fourteenth, and twenty first days.

Methods: Three groups of test materials, each with twenty samples, were prepared. Measurements of the cumulative fluoride release [parts per million (ppm)] and re-release measured on the first, fourteenth, and twenty first days.

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In recent years, health-care providers have seen more patients with difficult-to-treat wounds and burns. The biopolymer-based wound dressing protects the wounded area while assisting in the recovery of dermal and epithelial tissues throughout the healing process. The overall number of patients with chronic lesions has been expanding due to developing society, over weight, and cardiovascular illness.

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Aim And Objective: This case report aims to describe the management of a case of rare gingival lesion in a young pediatric patient.

Background: An increase in the size of the gingival tissue is known as gingival hyperplasia. This can cause esthetic as well as functional problems, and interfere with normal functions like mastication and speech.

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Prostate cancer is the second most common cause of cancer death in males. A greater understanding of cell signalling events that occur within the prostate cancer tumour microenvironment (TME), for example, between cancer-associated fibroblasts (CAFs) and prostate epithelial or cancer cells, may identify novel biomarkers and more effective therapeutic strategies for this disease. To address this, we used cell-type-specific labelling with amino acid precursors (CTAP) to define cell-type-specific (phospho)proteomic changes that occur when prostate epithelial cells are co-cultured with normal patient-derived prostate fibroblasts (NPFs) versus matched CAFs.

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Reciprocal interactions between prostate cancer cells and carcinoma-associated fibroblasts (CAFs) mediate cancer development and progression; however, our understanding of the signalling pathways mediating these cellular interactions remains incomplete. To address this, we defined secretome changes upon co-culture of prostate epithelial or cancer cells with fibroblasts that mimic bi-directional communication in tumours. Using antibody arrays, we profiled conditioned media from mono- and co-cultures of prostate fibroblasts, epithelial and cancer cells, identifying secreted proteins that are upregulated in co-culture compared to mono-culture.

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Unlabelled: Cancer cells undergo metabolic reprogramming to meet increased bioenergetic demands. Studies in cells and mice have highlighted the importance of oxidative metabolism and lipogenesis in prostate cancer; however, the metabolic landscape of human prostate cancer remains unclear. To address this knowledge gap, we performed radiometric (14C) and stable (13C) isotope tracing assays in precision-cut slices of patient-derived xenografts (PDX).

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Background: In prostate cancer, the tumour microenvironment (TME) represents an important regulator of disease progression and response to treatment. In the TME, cancer-associated fibroblasts (CAFs) play a key role in tumour progression, however the mechanisms underpinning fibroblast-cancer cell interactions are incompletely resolved. Here, we address this by applying cell type-specific labelling with amino acid precursors (CTAP) and mass spectrometry (MS)-based (phospho)proteomics to prostate cancer for the first time.

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Article Synopsis
  • * Coordinating organized care programs with large hospitals is essential for improving CHF management and promoting sustainable health improvements.
  • * This review emphasizes the potential of health technologies to fill the gaps in CHF treatment and support the shift towards more community-focused care.
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  • Androgen and androgen receptor (AR) targeted therapies are primary treatments for prostate cancer, but some tumors become AR-negative, allowing them to avoid this treatment.
  • A study used chromatin immunoprecipitation sequencing (ChIP-seq) to find out how the transcription factor OCT1 impacts the development of AR-negative prostate cancer.
  • Key findings included the identification of two genes, STNB1 and PFN2, that are regulated by OCT1 and linked to tumor growth and migration, suggesting they could be potential targets for treating AR-negative prostate cancer.
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Preclinical testing is a crucial step in evaluating cancer therapeutics. We aimed to establish a significant resource of patient-derived xenografts (PDXs) of prostate cancer for rapid and systematic evaluation of candidate therapies. The PDX collection comprises 59 tumors collected from 30 patients between 2012-2020, coinciding with availability of abiraterone and enzalutamide.

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Introduction: Considering the morbidity associated with Sudden Infant Death Syndrome (SIDS) and limitations of absence of such syndrome in animals, a retrospective survey based human study and prospective Finite Element Method (FEM) study was planned to evaluate the effect of orthodontic pacifier in prevention of SIDS.

Study Design: Two groups, Group I (case) consisting of 48 people, who had lost their infant due to SIDS in past, and Group II (control) consisting of 200 participants with infant in the family, were established. The study was conducted in two parts.

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Anchorage control during the correction of severely crowded dentitions has always been a source of concern during orthodontic therapy. The Nance palatal arch (NPA) has, in the past, been widely used for reinforcing anchorage in such cases. Modifications of the NPA have been reported for use as a fixed functional appliance or for molar distalization.

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Mast cells (MCs) are important cellular components of the tumor microenvironment and are significantly associated with poor patient outcomes in prostate cancer and other solid cancers. The promotion of tumor progression partly involves heterotypic interactions between MCs and cancer-associated fibroblasts (CAFs), which combine to potentiate a pro-tumor extracellular matrix and promote epithelial cell invasion and migration. Thus far, the interactions between MCs and CAFs remain poorly understood.

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Article Synopsis
  • * Research shows that the Oxytocin Receptor (OXTR) is prevalent in the human prostate, particularly in contractile cells, although it does not influence fibroblast cell growth.
  • * The study indicates that older men’s prostate tissues respond more strongly to oxytocin and its antagonist, atosiban, suggesting their responses could be key in tailoring future BPH therapies.
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Background: Prostate cancer changes the phenotype of cells within the stromal microenvironment, including fibroblasts, which in turn promote tumour progression. Functional changes in prostate cancer-associated fibroblasts (CAFs) coincide with alterations in DNA methylation levels at loci-specific regulatory regions. Yet, it is not clear how these methylation changes compare across CAFs from different patients.

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One of the most common clinical challenges encountered with facemask therapy for early correction of skeletal Class III malocclusions is the delivery of appropriate direction of force for effecting the pure translation of maxilla. This technical note describes a novel method involving the use of Begg's auxiliary for achieving efficient and predictable delivery of protraction forces. With this modified assembly, effective vector control for facemask can be achieved without the need to remove the bonded Hyrax assembly.

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Background: Pulpotomy is the treatment for cariously exposed vital primary molars. UsingfFormocresol as a pulpotomy agent is been in controversy, which has triggered the search for better alternatives. The product like 'Myristica fragrans (MF)-Nutmeg gel, (TC)-Myrobolan gel is gaining popularity as herbal pulpotomy agents.

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In prostate cancer, cancer-associated fibroblasts (CAF) exhibit contrasting biological properties to non-malignant prostate fibroblasts (NPF) and promote tumorigenesis. Resolving intercellular signaling pathways between CAF and prostate tumor epithelium may offer novel opportunities for research translation. To this end, the proteome and phosphoproteome of four pairs of patient-matched CAF and NPF were characterized to identify discriminating proteomic signatures.

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Approximately 50% of prostate cancers harbor the TMPRSS2:ERG fusion, resulting in elevated expression of the ERG transcription factor. Despite the identification of this subclass of prostate cancers, no personalized therapeutic strategies have achieved clinical implementation. Kinases are attractive therapeutic targets as signaling networks are commonly perturbed in cancers.

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Article Synopsis
  • Metabolism changes are crucial in cancer, but the specific role of lipid (fat) metabolism in prostate cancer remains unclear; research focused on this using patient tissue and mouse models.
  • The study found increased fatty acid uptake in prostate cancer, primarily driven by the fatty acid transporter CD36, which correlates with more aggressive disease.
  • Targeting CD36 and fatty acid metabolism proved effective, as disrupting these processes slowed cancer progression and reducing severity in xenograft models, suggesting a potential treatment strategy for prostate cancer.
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The tumour microenvironment plays a vital role in the development of solid malignancies. Here we describe an in vitro human prostate cancer microtissue model that facilitates the incorporation and interrogation of key elements of the local prostatic tumour microenvironment. Primary patient-derived cancer-associated fibroblasts (CAFs) were cultured in three-dimensional (3D) melt electrowritten scaffolds where they deposited extensive extracellular matrix (ECM) and promoted significant changes in prostate epithelial morphology, when compared to matched non-malignant prostatic fibroblasts (NPFs).

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Introduction: Dissolution of the enamel in the form of erosion has increased due to shift in eating habits toward carbonated drinks like soft drink and chocolates.

Aim: The purpose of this study was to evaluate changes in the salivary pH after intake of different eatables and beverages in children at different time intervals.

Study Design: Using standard salivary tests, this study was conducted as a case-control study.

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Article Synopsis
  • Castration-resistant prostate cancer (CRPC) is difficult to treat due to its diverse tumor characteristics, making it essential to develop models that reflect this complexity for better therapy identification.
  • Researchers created four new patient-derived xenografts (PDXs) from two patients to explore effective drug treatments, focusing on various therapeutic strategies.
  • The study tested multiple drugs on these PDXs and found that, despite the tumors' heterogeneity, all models responded well to a specific combination of ribosome-targeting agents, CX-5461 and CX-6258.
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