Publications by authors named "Peter Pushparaj"

Colorectal cancer (CRC) is a major health problem the world face currently and one of the leading causes of death worldwide. CRC is genetically heterogeneous and multiple genetic aberrations may appear on course of the disease throughout patient's lifetime. Genetic biomarkers such as BRAF, KRAS, and NRAS may provide early precision treatment options that are crucial for patient survival and well-being.

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Objectives: Alzheimer's disease (AD) is a complex neurodegenerative disorder that primarily affects elderly individuals. This study aimed to elucidate the intricate mechanisms underlying AD in elderly patients compared with healthy aged individuals using high-throughput RNA sequencing (RNA-seq) data and next-generation knowledge discovery methods (NGKD), with a focus on identifying potential therapeutic agents.

Methods: High-throughput RNA-seq data were obtained from the Gene Expression Omnibus (GEO) database (accession number: GSE104704).

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Mast cell (MCs) activation is the driving force of immune responses in several inflammatory diseases, including asthma and allergies. MCs are immune cells found throughout the body and are equipped with numerous surface receptors that allow them to respond to external signals from parasites and bacteria as well as to intrinsic signals such as cytokines. Upon activation, MCs release various mediators and proteases that contribute to inflammation.

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Background: Osteoarthritis (OA) is a prevalent joint disorder characterized by joint pain, functional impairment, and disability. The current study investigated the therapeutic effects of intra-articular injection of rat bone marrow-derived mesenchymal stem cells (rBM-MSCs) in rats with knee OA.

Methods: Fourty five male Wistar rats were randomly divided into three groups (A-C) and received either an intra-articular injection of normal saline (NS) or rBM-MSCs.

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Article Synopsis
  • - The study investigates how human cord blood-derived mast cells (hCBMCs) respond to the alarmin interleukin-33 (IL-33) by releasing various cytokines, aiming to understand their role in immune responses.
  • - Researchers stimulated hCBMCs with different concentrations of IL-33 for varying durations and analyzed the expression and secretion of chemokines and growth factors through microarrays and multiplex assays.
  • - Results showed consistent upregulation of certain chemokines and growth factors across all conditions, indicating that mast cells play a crucial role in regulating immune responses and could inform future inflammatory treatment strategies.
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Background & Aim: Congenital heart disease (CHD) is the most common cause of non-infectious deaths in infants worldwide. However, the molecular mechanisms underlying CHD remain unclear. Approximately 30 % of the causes are believed to be genetic mutations and chromosomal abnormalities.

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Article Synopsis
  • - Mast cells are crucial immune cells that react to threats and can release various mediators when activated, particularly in response to the cytokine IL-33, produced during infections or tissue damage.
  • - This study focused on how human cord blood-derived mast cells (hCBMCs) respond to different concentrations of IL-33 over short (6 hours) and long (24 hours) periods, discovering changes in cytokine expression.
  • - Results showed that acute exposure boosted pro-inflammatory cytokines (like IL-1α, IL-1β) while prolonged exposure led to different cytokines (like IL-5, IL-10) being released, highlighting the unique responses of mast cells depending on the duration of IL-33 stimulation.*
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Humans suffer from various diseases that require more specific drugs to target them. Among the different potent agents, s serve as good antibacterial agents; however, s are resistant to such antibiotics. The present study was designed to prepare efficient inhibitor amides (12-15) from inexpensive, easily accessible, and bioactive precursors; Morita Baylis Hillman (MBH) adducts (5-8).

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Congenital heart disease (CHD) encompasses a diverse range of structural and functional anomalies that affect the heart and the major blood vessels. Epidemiological studies have documented a global increase in CHD prevalence, which can be attributed to advancements in diagnostic technologies. Extensive research has identified a plethora of CHD-related genes, providing insights into the biochemical pathways and molecular mechanisms underlying this pathological state.

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Cardiovascular disease (CVD) is one of the main causes of death in Saudi Arabia. Cardiac remodeling plays a critical role in the pathophysiology of heart failure. Major focus of our study was to identify crucial genes involved in the pathological remodeling of the heart caused by pressure overload.

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Colorectal cancer (CRC) is the second most common cancer in the world. In Saudi Arabia, CRC is the most common cancer in males and the third most common in females, and its incidence rate is rising as the country continues to develop. However, the country does not have a national CRC screening program for CRC.

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Breast cancer (BC) is one of the most widespread types of cancer affecting females, and therefore, early diagnosis is critical. BC is a complex heterogeneous disease affected by several key pathways. Among these, WNT proteins and their frizzled receptors (FZD) have been demonstrated to be crucial in regulating a number of cellular and molecular events in BC tumorigenesis.

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Leber hereditary optic neuropathy (LHON) is a rare maternally inherited mitochondrial disorder that typically affects young male adults in their second and third decades of life. It usually manifests as painless, subacute, progressive, bilateral vision loss, with more than 90% of affected individuals losing their vision before age 50. Compared with other diseases that cause optic neuritis (multiple sclerosis or neuromyelitis optica spectrum disorders), LHON has worsening visual function in the first 6-12 months of disease progression, is predominantly male, the optic nerve is affected bilaterally from onset, there is no gadolinium enhancement on MRI, no response to disease-modifying therapy, and there is a family history of mutation in mitochondrial DNA.

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Oral Squamous cell Cancers (OSCC) is strongly associated with tobacco consumption. We here in present a case study of a OSCC patient who refused standard oncological care (SOC), to highlight the importance of integrating palliative care (PC) for improved patient outcomes. A 61 years male patient, with history of chewing tobacco for more than 20 years and diagnosed to have OSCC for 1.

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Article Synopsis
  • Chemotherapy resistance, particularly to etoposide, significantly contributes to treatment failure in acute myeloid leukemia (AML).
  • This study focused on understanding etoposide resistance in AML using HL60 cell lines, identifying three resistant clones (HL60-EtopR H1A, H1B, H1C) with notably higher resistance levels.
  • Gene expression profiling revealed the upregulation of src tyrosine kinase family genes in resistant cells, indicating a potential target for further research to overcome resistance using Src inhibitors.
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Article Synopsis
  • * The research involved isolating CD34 progenitors from umbilical cord blood and differentiating them into MCs over several weeks, assessing their purity through flow cytometry to confirm specific surface markers.
  • * Advanced analytical methods, including microarray and gene set enrichment analysis, were utilized to identify unique gene signatures and pathways relevant to the immune response in hCBMCs compared to original CD34 cells.
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Although 5‑fluorouracil (5‑FU)‑based chemotherapy is the major treatment for colorectal cancer, it has disadvantages such as systemic toxicity, lack of effectiveness and selectivity, and development of resistance. Capecitabine, a prodrug form of 5‑FU, was designed to overcome these drawbacks, to fulfill the need for more convenient therapy, and to improve safety, tolerability and intratumor drug concentration levels through a tumor‑specific conversion to the active 5‑FU drug. The purpose of the present review is to provide a comprehensive comparison between 5‑FU therapy and capecitabine.

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Breast cancer (BC) is the most common cancer in women worldwide, with 2.3 million cases recorded in 2020. Despite improvements in cancer treatment, patients with BC still succumb to the disease, due to regional and distant metastases when diagnosed at later stages.

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Background & Objectives: Accurate identification of molecular and toxicological functions of potential drug candidates is crucial for drug discovery and development. This may aid in the evaluation of the risks of genotoxicity and carcinogenesis. In addition, in silico characterization of existing and new drugs might offer clues for future investigations and aid in the development of anticancer treatments.

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Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease affecting different organ systems. This study aimed to determine the concentrations of 30 different human cytokines, chemokines, and growth factors in human plasma to understand the role of these markers in the pathogenicity of SLE using Luminex Multiple Analyte Profiling (xMAP) technology. Plasma samples were obtained from patients with SLE (n = 28), osteoarthritis (OA) (n = 9), and healthy individuals (n = 12) were obtained.

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Introduction: Clusterin is a moonlighting protein that has many functions. It is a multifunctional holdase chaperone glycoprotein that is present intracellularly and extracellularly in almost all bodily fluids. Clusterin is involved in lipid transport, cell differentiation, regulation of apoptosis, and clearance of cellular debris, and plays a protective role in ensuring cellular survival.

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Article Synopsis
  • Chondrogenesis is the process where cartilage progenitor cells develop into cartilage tissue with specific structural and functional traits, though the gene expression changes over time during this process haven't been fully explored.
  • Researchers used RNA sequencing to analyze gene expression in embryonic limb bud progenitor cells during cartilage formation, finding distinct changes in the transcriptome as chondrogenesis progressed.
  • They identified important genes and transcription factors associated with chondrogenesis and demonstrated that silencing certain genes like ATOH8 or EBF1 disrupts the process, providing valuable insights for future cartilage tissue engineering strategies.
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Objectives: Accurately identifying the cellular, biomolecular, and toxicological functions of anticancer drugs help to decipher the potential risk of genotoxicity and other side effects. Here, we examined bleomycin for cellular, molecular and toxicological mechanisms using next-generation knowledge discovery (NGKD) tools.

Methods: This study was conducted at the Faculty of Applied Medical Sciences, King Abdulaziz University (KAU), Jeddah, Saudi Arabia in October 2022.

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