Publications by authors named "Navneet Dubey"

The endoplasmic reticulum plays an important role in maintaining the protein homeostasis of cells as well as regulating Ca storage. An increased load of unfolded proteins in the endoplasmic reticulum due to alterations in the cell's metabolic pathway leads to the activation of the unfolded protein response, also known as ER stress. ER stress plays a major role in maintaining the growth and survival of various cancer cells, but persistent ER stress can also lead to cell death and hence can be a therapeutic pathway in the treatment of cancer.

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Objective: Glioblastoma multiforme (GBM), particularly the isocitrate dehydrogenase (IDH)-wildtype type, represents a significant clinical challenge due to its aggressive nature and poor prognosis. Despite advancements in medical imaging and its modalities, survival rates have not improved significantly, demanding innovative treatment planning and outcome prediction approaches.

Methods: This study utilizes a support vector machine (SVM) classifier using radiomics features to predict the overall survival (OS) of GBM, IDH-wildtype patients to short (<12 months) and long (≥12 months) survivors.

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The first synthesis of chiral -2,5-disubstituted pyrrolidine organocatalysts is described. Their application for the enantioselective Michael addition of nitromethane to α,β-unsaturated aldehydes with excellent yield (up to 91%) and enantioselectivity (up to >99% ee) is demonstrated. Another catalytic application for the reaction of 2,4-hexadienal with nitrostyrene is also showcased.

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The significant mortality rate associated with Marburg virus infection made it the greatest hazard among infectious diseases. Drug repurposing using methods has been crucial in identifying potential compounds that could prevent viral replication by targeting the virus's primary proteins. This study aimed at repurposing the drugs of SARS-CoV-2 for identifying potential candidates against the matrix protein VP40 of the Marburg virus.

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Background: Accurate and non-invasive estimation of MGMT promoter methylation status in glioblastoma (GBM) patients is of paramount clinical importance, as it is a predictive biomarker associated with improved overall survival (OS). In response to the clinical need, recent studies have focused on the development of non-invasive artificial intelligence (AI)-based methods for MGMT estimation. In this systematic review, we not only delve into the technical aspects of these AI-driven MGMT estimation methods but also emphasize their profound clinical implications.

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The inevitable use of plastics in the existing standard of life makes its way to ecosystems, predominantly into the marine ecosystem. Recent research on energy recycling from marine discarded plastics through biological, chemical, and thermal processes is summarized, which degrade plastic debris and transform it into energy-efficient products. In a system-oriented approach, different boundaries like carbon efficiency, global warming potential, cumulative energy demand, and cost of the product have been evaluated.

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Increasing incidences of insomnia in adults, as well as the aging population, have been reported for their negative impact on the quality of life. Insomnia episodes may be associated with neurocognitive, musculoskeletal, cardiovascular, gastrointestinal, renal, hepatic, and metabolic disorders. Epidemiological evidence also revealed the association of insomnia with oncologic and asthmatic complications, which has been indicated as bidirectional.

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Article Synopsis
  • - Cancer is a significant global health concern, with breast cancer being the most common type affecting women, leading to the need for effective treatment strategies like surgery, radiation, and chemotherapy.
  • - Ongoing research aims to develop new therapies with lower toxicity, including gene therapy, which seeks to correct defective genes involved in cancer.
  • - CRISPR/Cas9 has emerged as a powerful gene-editing tool that enhances targeted therapies by addressing drug resistance and improving immunotherapy for breast cancer, due to its precision and cost-effectiveness.
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Metastasis or the progression of malignancy poses a major challenge in cancer therapy and is the principal reason for increased mortality. The epithelial-mesenchymal transition (EMT) of the basement membrane (BM) allows cells of epithelial phenotype to transform into a mesenchymal-like (quasi-mesenchymal) phenotype and metastasize via the lymphovascular system through a metastatic cascade by intravasation and extravasation. This helps in the progression of carcinoma from the primary site to distant organs.

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Alzheimer’s disease (AD) is a neurodegenerative disorder that is characterized by a progressive loss of cognitive functions at a higher level than normal aging. Although the apolipoprotein (APOE) gene is a major risk factor in developing AD, other genes have also been reported to be linked with complex phenotypes. Therefore, this genome-wide expression study explored differentially expressed genes as possible novel biomarkers involved in AD.

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Background: Cerebral ischemic events, comprising of excitotoxicity, reactive oxygen production, and inflammation, adversely impact the metabolic-redox circuit in highly active neuronal metabolic profile which maintains energy-dependent brain activities. Therefore, we investigated neuro-regenerative potential of melatonin (Mel), a natural biomaterial secreted by pineal gland.

Methods: We specifically determined whether Mel could influence tunneling nanotubes (TNTs)-mediated transfer of functional mitochondria (Mito) which in turn may alter membrane potential, oxidative stress and apoptotic factors.

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Bony injuries lead to compromised skeletal functional ability which further increase in aging population due to decreased bone mineral density. Therefore, we aimed to investigate the therapeutic potential of platelet-derived biomaterials (PDB) against bone injury. Specifically, we assessed the impact of PDB on osteo-inductive characteristics and migration of mouse embryonic fibroblasts (MEFs).

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Traditional Chinese medicines Antler's extract (A) and (G) and (A) have been known to individually contain a plethora of bioactive factors including triterpenoids, polysaccharides etc., exerting various curative impacts such as anti-inflammatory, anti-oxidative, anti-atherosclerotic and anti-viral activities. However, their combinatorial therapeutic efficacy for oral cancer has not been investigated.

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Recent reports have indicated the role of highly expressed methylenetetrahydrofolate dehydrogenase 2 (MTHFD2) enzyme in cancers, showing poor survival; however, detailed mechanistic insight of metabolic functions of MTHFD2 have not been well-defined. Therefore, we aimed to examine the metabolic functions and cellular reprograming potential of MTHFD2 in lung cancer (LCa). In this study, we initially confirmed the expression levels of MTHFD2 in LCa not only in tissue and Oncomine database, but also at molecular levels.

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Article Synopsis
  • Research indicates that nicotine exposure, beyond inhalation, can occur through air or clothing and may negatively affect health, particularly in passive smokers.
  • In a mouse model of osteoarthritis (OA), nicotine was found to cause cartilage degeneration by suppressing important cellular markers and altering knee joint structure.
  • Treatment with platelet-derived biomaterial (PDB) successfully reduced OA symptoms and restored key signaling pathways related to cartilage health, highlighting its potential in combating nicotine-induced OA progression.
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  • - The text discusses the role of gene expression regulators in cancer, particularly focusing on non-small-cell lung cancer (NSCLC) and how these could be targeted for new therapies
  • - Researchers investigated forkhead box F1 (FOXF1), which was previously identified as important for stemness in lung cancer, by creating NSCLC cell lines that express varying levels of FOXF1
  • - Findings showed that increased FOXF1 expression led to reduced cancer cell growth and migration, primarily by activating the tumor suppressor p21 and causing cell-cycle arrest, suggesting it could be a new strategy for treating lung cancer.
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  • The study investigates the late stages of cerebrorenal syndrome (CRS), where both acute kidney injury (AKI) and ischemic stroke (IS) co-occur, by creating a rat model that simulates this condition.
  • Researchers tested the effects of human platelet-rich plasma (hPRP), a blood-derived material, on various inflammatory markers and pathologic changes in the brain and kidneys post-sham procedure.
  • Results showed that hPRP significantly reduced inflammation and oxidative stress, and improved both cerebro- and reno-protective outcomes, suggesting its potential therapeutic role in CRS.
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Diabetes mellitus (DM) is well-known to exert complications such as retinopathy, cardiomyopathy and neuropathy. However, in recent years, an elevated osteoarthritis (OA) complaints among diabetics have been observed, portending the risk of diabetic OA. Since formation of advanced glycation end products (AGE) is believed to be the etiology of various diseases under hyperglycemic conditions, we firstly established that streptozotocin-induced DM could potentiate the development of OA in C57BL/6J mouse model, and further explored the intra-articularly administered adipose-derived stem cell (ADSC) therapy focusing on underlying AGE-associated mechanism.

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Knee osteoarthritis (OA) is one of the most prevalent disorders in elderly population. Among various therapeutic alternatives, we employed stromal vascular fraction (SVF), a heterogeneous cell population, to regenerate damaged knee cartilage. OA patients were classified on the basis of age, gender, body mass index (BMI), and x-ray-derived Kellgren-Lawrence (KL) grade.

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Article Synopsis
  • - Osteoarthritis (OA) is challenging to treat due to the limited ability of chondrocytes (cartilage cells) to regenerate, and previous research has explored the effects of hyaluronic acid (HA) and platelet-rich plasma (PRP) individually but not together.
  • - In experiments, combining HA and PRP significantly improved chondrocyte survival and growth, while also reducing markers of cell damage and promoting cell cycle progression in OA models.
  • - The combination therapy (HA+PRP) shows potential as a treatment for regenerating articular cartilage in OA, possibly by reducing inflammation and oxidative stress, and inhibiting processes that lead to cartilage breakdown and calcification.
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Rationale: Lycium barbarum polysaccharide (LBP) is known to promote reproductive functions. However, its role in noncontact erection (NCE) of penis initiated by brain regions including medial preoptic area (MPOA) and paraventricular nucleus (PVN) regions responsible for sexual behavior has not been investigated.

Objectives: Therefore, this study initially investigated the effects of LBP on male sexual function, and subsequently, the mechanistic insight was investigated through assessing the expression of neuronal nitric oxide synthase (nNOS) in the MPOA and PVN.

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Article Synopsis
  • Cancer is a major global health issue, and researchers developed a new immunotherapy using mesenchymal stem cells combined with a protein vaccine, but faced limitations with the original method.
  • To improve this approach, they used freshly prepared adipose-derived stem cells (ADSCs) and a modified protein that is non-oncogenic, showing promising results in treating colon and lung cancer in mice.
  • The therapy effectively induced cancer cell death, reduced tumor blood vessel formation, and activated the immune response, suggesting its potential for future clinical applications in cancer treatment.
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