Publications by authors named "Kamel H"

Cancer cells undergo metabolic rewiring to support rapid proliferation and survival in challenging environments. Glutamine is a preferred resource for cancer metabolism, as it provides both carbon and nitrogen for cellular biogenesis. Recent studies suggest the potential anticancer activity of amino acid analogs.

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Objectives: Throughout the regular menstrual cycle, women experience fluctuations in hormonal levels, including estrogen and progesterone. Dentists often perform repetitive hand movements requiring highly proficient manual dexterity to skillfully grip and manipulate tools. Hormonal factors have been suggested to influence female dentists' level of function, thus potentially making them more vulnerable to musculoskeletal injuries than their male counterparts.

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Objectives: Pregnancy and the postpartum period are associated with an increased risk of ischemic and hemorrhagic stroke. The incidence of missed or delayed diagnosis of pregnancy-associated stroke (PAS) in the emergency setting is unknown.

Materials And Methods: We conducted a retrospective cohort study of women hospitalized for labor and delivery identified through administrative claims data from all nonfederal EDs and hospitals in 11 states (New York 2006-2017, Florida 2005-2019, 3 states from 2016-2020, 6 states from 2016-2019).

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Globally, hepatocellular carcinoma (HCC) is one of the most commonly encountered cancers. Because the current early diagnostic tests for HCC are not very sensitive, most cases of the disease are discovered late when it is in its terminal stage. Cellular metabolism changes during carcinogenesis to enable cancer cells to adapt to the hypoxic milieu, boost anabolic synthesis, promote survival, and evade apoptotic death signals.

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  • Renal colic is a common issue that can lead to serious complications like renal failure if not diagnosed promptly, with CT KUB being the preferred diagnostic tool for adults due to its effectiveness in detecting kidney stones.
  • The study involved auditing patient records from A&E and primary care to evaluate the usage of CT KUB and adherence to guidelines, with initial findings showing that only 56% of patients were investigated properly.
  • A second cycle of the audit aimed to address these issues, revealing that many patients still experienced delays in investigation, highlighting a need for improved adherence to diagnostic protocols.*
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Objectives: The objective of this study was to estimate the incidence, timing, and type of new cancer diagnosis among patients with cryptogenic stroke.

Methods: We used data from the ARCADIA trial, which enrolled patients with cryptogenic stroke and atrial cardiopathy. Participants were prospectively followed, and serious adverse events were assessed every 3 months or sooner if investigators were alerted between visits to an event.

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Introduction: Liver cancer, particularly Hepatocellular carcinoma (HCC), remains a significant global health concern due to its high prevalence and heterogeneous nature. Despite the existence of approved drugs for HCC treatment, the scarcity of predictive biomarkers limits their effective utilization. Integrating diverse data types to revolutionize drug response prediction, ultimately enabling personalized HCC management.

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Staphylococcus aureus produces a plethora of virulence factors to invade and establish infections in the host system, and biofilms are more resistant to antibiotics than planktonic cells. In this study, we aimed to investigate the anti-virulence and anti-biofilm potentials of zinc sulfate against S. aureus isolates.

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Host genetic variation has been recognized as a key predictor of diverse clinical sequelae among severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected patients. Insights into the link between the Interleukin-6 receptor (IL-6R) and Interleukin-1 beta (IL-1β) genetic variation and severe coronavirus disease 2019 (COVID-19) are crucial for developing new predictors and therapeutic targets. We aimed to investigate the association of IL-6R rs12083537, IL-1β rs16944, and IL-1β rs1143634 SNPs with the severity of COVID-19.

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  • Mechanical thrombectomy (MT) access for acute ischemic stroke varies greatly across countries, prompting the need for a scoring system to evaluate and improve treatment accessibility worldwide.
  • A systematic review and a modified Delphi method were used to identify key attributes affecting MT access, culminating in a final score of 0-36 based on 12 consensus attributes selected by international experts.
  • The MT access score serves as a pioneering tool to identify barriers to MT access, aiming to enhance stroke care and outcomes globally by guiding public health interventions.
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  • The study investigates the link between traditional vascular risk factors and cervical artery dissection, particularly focusing on older patients.
  • Using data from Medicare beneficiaries, the research identifies several risk factors, including hypertension, alcohol use, and coronary artery disease, that are associated with an increased likelihood of developing cervical artery dissection.
  • The findings suggest that older individuals with certain vascular conditions are at a higher risk, indicating the need for further research on these associations.
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Background: Emergency Medical Services (EMS) clinicians are front-line in evaluating patients with stroke in the community. Their ability to correctly identify stroke influences downstream management decisions. We sought to use a large national database of prehospital clinical data to determine risk factors associated with missed EMS stroke identification.

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  • Keyboard acoustic recognition focuses on using keyboard sounds to improve cybersecurity and human-computer interaction, affected by factors like platform, typing style, and noise.
  • The Multi-Keyboard Acoustic (MKA) Datasets, created by the University of Halabja's Computer Science team, include extensive recordings from six popular keyboard platforms, complete with sound files and derived data.
  • These datasets help researchers in areas like keylogging detection by providing high-quality data on typing behavior, facilitating the development of better algorithms and security measures against acoustic attacks.
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  • The study focuses on patients with ischemic stroke classified as embolic stroke of undetermined source (ESUS), highlighting the need for personalized treatment options between anticoagulation and antiplatelet therapy for secondary prevention.
  • A meta-analysis of 7 trials with nearly 15,000 patients showed that, overall, anticoagulation did not significantly reduce the risk of recurrent ischemic stroke compared to antiplatelet therapy.
  • However, in patients with a patent foramen ovale (PFO), anticoagulation demonstrated improved outcomes, while results varied for those with left atrial enlargement (LAE) depending on whether cardiac monitoring was allowed after randomization.*
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  • Cancer increases the risk of atrial fibrillation, but its relationship with atrial cardiopathy—linked to a higher ischemic stroke risk—was studied to see if it’s also significant.
  • A study of 1,104 patients hospitalized for acute ischemic stroke found that while 10% had active cancer and 47% had atrial cardiopathy, no significant association was found between active cancer and atrial cardiopathy overall or in patients with embolic stroke of undetermined source (ESUS).
  • Even when considering any history of cancer, results showed no strong link to atrial cardiopathy, indicating cancer may not significantly influence this specific heart condition in stroke patients.
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Background: Identifying patients with acute brain injury among patients who present to the Emergency Department (ED) with severe hypertension can be challenging. We explored rates of brain injury in a cohort of ED patients with severe hypertension in whom acute target-organ damage was or was not initially suspected.

Methods: We conducted a retrospective chart-review study at two different hospitals within the same urban health system.

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Heart failure (HF) is an important comorbidity for patients with ischemic stroke, present in 11 %-18 % of patients, and may also independently increase the risk of first-ever and recurrent ischemic stroke. HF is categorized based on ejection fraction (EF) into HF with reduced (HFrEF), mildly-reduced (HFmrEG) and preserved ejection fraction (HFpEF), with the efficacy of HF therapies differing between the three subcategories. Despite this classification, the incidence, recurrence rates and outcomes of ischemic stroke do not appear to differ significantly between the three subtypes, even when considering the concurrent presence of atrial fibrillation.

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Background: Multi-Arm, Multi-Stage (MAMS) clinical trial designs allow for multiple therapies to be compared across a spectrum of clinical trial phases. MAMS designs fall under several overarching design groups, including adaptive designs (AD) and multi-arm (MA) designs. Factorial clinical trials designs represent a combination of factorial and MAMS trial designs and can provide increased efficiency relative to fixed, traditional designs.

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Background: The National Institutes of Health Stroke Scale (NIHSS) is a pivotal clinical tool used to assess patients with acute stroke. However, substantial heterogeneity in the application and interpretation of stroke scale items can occur. This systematic review aimed to elucidate heterogeneity in measuring the NIHSS.

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  • Cystic lymphangioma is a rare, benign growth in the lymphatic system, typically found in children but can occur in young adults, with varying management and prognosis based on the location.
  • A case study reported a young adult with chronic swelling in the neck, diagnosed through physical examination and imaging, with histopathology confirming cystic lymphangioma.
  • Treatment involved sclerotherapy and surgical removal, highlighting the need for increased awareness and understanding of this condition in adult patients.
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  • Direct oral anticoagulants are commonly used for preventing strokes in patients with atrial fibrillation and flutter, but concerns about bleeding limit their use; milvexian is a new drug that might work as well with less bleeding risk.
  • The LIBREXIA AF trial is a large global study comparing milvexian to apixaban, enrolling 15,500 participants to assess if milvexian can prevent strokes without increasing bleeding events significantly.
  • The results from this study aim to clarify the efficacy and safety of milvexian compared to apixaban over a projected 4-year follow-up period.
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Background: ARCADIA compared apixaban to aspirin for secondary stroke prevention in patients with cryptogenic stroke and atrial cardiopathy. One possible explanation for the neutral result is that biomarkers used did not optimally identify atrial cardiopathy. We examined the relationship between biomarker levels and subsequent detection of AF, the hallmark of atrial cardiopathy.

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