Publications by authors named "Arifi S"

Background: Urinary tract infections (UTIs) are widespread worldwide impacting society, economics, and healthcare systems. The rise of antibiotic resistance in both hospital and community settings has further complicated UTI management. This study aims to assess the epidemiologic distribution and microbiologic classification of UTI-causing microorganisms, as well as their resistance patterns.

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  • Nurr1 (NR4A2) is a crucial transcription factor in the central nervous system that plays protective and anti-inflammatory roles, making it a target in treating neurodegenerative diseases like Parkinson's and Alzheimer's.
  • Current research has focused on developing Nurr1 agonists, but there is a gap in creating inverse agonists that inhibit its activity.
  • This study details the structure-activity relationship of oxaprozin, identifying its potential as a moderate inverse Nurr1 agonist and RXR agonist, paving the way for future development of more selective and effective Nurr1 inverse agonists.
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  • - The retinoid X receptor (RXR) is a key transcription factor that works with other nuclear receptors and plays a role in various body functions, making it an important target for drug development in cancer and neurodegenerative diseases.
  • - Current RXR ligands often have issues with specificity, meaning they might not effectively target RXR without affecting other receptors.
  • - Researchers discovered a natural compound, valerenic acid, that acts as a strong RXR agonist, and they successfully developed simplified versions of it through design and virtual screening, which show similar activity to RXR and offer insights into what makes these compounds effective.
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  • Retinoid X receptors (RXRs) are important proteins that help regulate various biological processes like cell differentiation and death, but existing RXR agonists lack specificity and effectiveness.
  • Researchers are working to develop better RXR modulators by combining structures from natural ligands, like those derived from vitamin A and valerenic acid, to enhance their binding properties and effectiveness.
  • They successfully created a new, more potent RXR agonist by modifying an oxaprozin-derived compound and replacing problematic elements to avoid interference in biological assays, leading to a highly optimized new chemical probe for RXR.
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The lipid-sensing transcription factor PPARγ is the target of antidiabetic thiazolidinediones (TZD). At two sites within its ligand binding domain, it also binds oxidized vitamin E metabolites and the vitamin E mimetic garcinoic acid. While the canonical interaction within the TZD binding site mediates classical PPARγ activation, the effects of the second binding on PPARγ activity remain elusive.

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  • - Sarcomas are a diverse group of cancers (over 100 types) that originate from mesenchymal tissue and make up about 1% of adult cancers; treatment typically involves surgery, radiation, and chemotherapy, especially for advanced cases.
  • - The outlook for patients with metastatic sarcomas is poor, creating a need for new treatments, with immunotherapy showing promise but still needing further research for specific types.
  • - Various immunotherapy methods, such as antibodies and cancer vaccines, are being tested in clinical trials for sarcomas, but results have been inconsistent and their practical use in treatment is still limited.
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Background: Soft tissue sarcomas (STS) are a heterogeneous group of tumors. For adequate therapeutic management, an accurate diagnosis is necessary. In Morocco, the diagnosis is essentially based on the morphological and immunohistochemical study.

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The transcription factor nerve growth factor-induced clone B (NGFI-B, Nur77, NR4A1) is an orphan nuclear receptor playing a role in cell survival and apoptosis regulation. Pharmacological Nur77 modulation holds promise for cancer and (neuro-)inflammatory disease treatment. The available Nur77 ligand scaffolds based on highly lipophilic natural products cytosporone B, celastrol and isoalantolactone are inadequate for the development of potent Nur77 modulators with favorable properties as chemical tools and future drugs.

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Giant cell tumors (GCTs) are locally aggressive but rarely malignant bone neoplasms that uncommonly involve the skull. In this report, we describe a tumor of the sphenoid sinus. A 51-year-old female was presented with headache, and bilateral decreased visual acuity, CT scan, and brain MRI revealed an infra-sellar enhancing tumor expanding to the sellar and supra-sellar region which proved to be a GCT.

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Purpose: Patients' awareness toward VTE and thromboprophylaxis is critical for medication adherence. This study aimed to evaluate the patient's awareness and perception towards VTE and its prophylaxis and to assess patient's satisfaction towards the information given by the medical staff.

Participants And Methods: A cross-sectional survey was conducted among hospitalized patients who received VTE prophylaxis in public and private hospitals in Sana'a, Yemen.

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Clear cell carcinoma is a rare minor salivary gland neoplasm. Its occurrence in the nasopharynx is uncommon. A limited number of cases are reported in the literature.

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The neuron derived orphan receptor (NOR-1, NR4A3) is among the least studied nuclear receptors. Its physiological role and therapeutic potential remain widely elusive which is in part due to the lack of chemical tools that can directly modulate NOR-1 activity. To probe the possibility of pharmacological NOR-1 modulation, we have tested a drug fragment library for NOR-1 activation and repression.

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Background: Rectal gastrointestinal stromal tumors are rare and optimal treatment is yet to be defined. The aim of this report is to highlight the possible aggressive behavior of four cases of rectal GISTs treated with neoadjuvant imatinib in a tertiary care medical hospital.

Methods: Four cases of rectal GISTs were retrospectively reviewed for patients demographics, clinical presentation, histology, and imatinib therapy.

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  • * A case study is presented involving a 19-year-old patient who experienced chest pain, leading to the discovery of a right mediastinal mass with pleural effusion and swollen lymph nodes, diagnosed as a yolk sac non-seminomatous germ cell tumor.
  • * Following biopsy results showing elevated alpha-fetoprotein levels, the patient underwent 4 cycles of chemotherapy with etoposide, ifosfamide, and platinum salts, followed by complete surgical removal
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Aggressive angiomyxoma is a rare benign and locally invasive mesenchymal tumor that is found most frequently in women at reproductive age. We report typical CT and MRI appearances of a 36-year old young woman with an aggressive angiomyxoma of the pelvis and perineum that was proved by ultrasound guided biopsy.This study describe the imaging features of theses tumors,wich may help to approch the diagnosis by their distinctive imaging with high signal intensity on T2-weighted image related to the myxomatous stroma and their characteristic of swirling or layering internal pattern after intravenous gadolinium contrast administration.

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The purine alkaloid caffeine is the most widely consumed psychostimulant drug in the world and has multiple beneficial pharmacological activities, for example, in neurodegenerative diseases. However, despite being an extensively studied bioactive natural product, the mechanistic understanding of caffeine's pharmacological effects is incomplete. While several molecular targets of caffeine such as adenosine receptors and phosphodiesterases have been known for decades and inspired numerous medicinal chemistry programs, new protein interactions of the xanthine are continuously discovered providing potentially improved pharmacological understanding and a molecular basis for future medicinal chemistry.

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  • Nearly half of soft tissue sarcoma cases occur in patients over 65, presenting complex treatment challenges without specific guidelines.
  • Current treatments, particularly surgery, are effective but must be balanced with potential side effects and quality of life considerations.
  • Future research is needed to refine treatment strategies for older patients, with a focus on minimizing toxicity and exploring new therapeutic options.
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Primary malignant mesothelioma of the ovary (PMMO) is an extremely rare tumor which can develop from mesothelial cells. This neoplasia is caused predominantly by exposure to asbestos or other cancer-causing agents. Preoperative assessment, based on computed tomography (CT) scan, magnetic resonance imaging and positron emission tomography, is essential for cancer staging.

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Soft-tissue sarcomas are malignant tumors that require good management within specialized centers. Our study aims to assess the benefit of handling these kinds of tumors using the Multidisciplinary Meeting (MDM) approach. The current paper details this approach through a prospective study that has lasted for 42 months in the HASSAN II University Hospital Center, Fez, Morocco.

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Head and neck squamous cell carcinoma (HNSCC) is a potential curative disease at its localized stage, by the use of multimodal treatment including surgery, radiation, and chemotherapy. While the metastatic stage is considered incurable and is characterized by poor prognosis. Conventional cytotoxic chemotherapy in addition to cetuximab were the only available systemic treatment with limited efficacy and modest median overall survival barely crossing the 1 year limit.

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Triple-negative breast cancer (TNBC) is characterized by the absence of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). It accounts for 15%-20% of all breast cancers and is associated with an aggressive evolution and poor outcomes with the majority of recurrences and deaths occurring in the first 5 years. Chemotherapy remains the mainstay of treatment in the absence of effective targets, but the good understanding of immune tumor microenvironment, the identification of immune-related targets, and the role of tumor-infiltrating lymphocytes (TILs) in TNBC has allowed to develop promising immunotherapeutic strategies for this unique subset of breast cancer.

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Background: Moroccan incidence of cancer is increasing with the lengthening of life expectancy. Data regarding elderly Moroccan cancer patients are lacking. In the context of our project aiming to develop an adapted version of the Comprehensive Geriatric Assessment CGA to the Moroccan population, we launched the first Moroccan multicenter transverse study to explore the characteristics of elderly Moroccan cancer patients.

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  • Breast cancer affects around 25% of women of reproductive age globally, and chemotherapy, while necessary, may lead to fertility issues for these young patients.
  • A study analyzed 100 premenopausal breast cancer patients and found an 82% incidence of chemotherapy-induced amenorrhea (CIA), with only 66.7% eventually regaining their menstrual cycles.
  • The research identified patient age at diagnosis as a significant risk factor for CIA, highlighting the importance of considering fertility preservation methods for affected patients.
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The world is facing the pandemic linked to COVID-19 virus infection that has rapidly spread worldwide, and severe complications have been reported to occur in around a third of patients. To date, there is no approved vaccine or specific therapy against COVID-19, but many trials are ongoing with some of them showing promising results. It has been shown recently that patients with cancer are at high risk of infection and they are more susceptible to develop severe events such as the necessity of invasive ventilation and death.

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