Publications by authors named "Mohamed Abdelhaleem"

In response to the World Health Organization's (WHO) research agenda of antimicrobial resistance (AMR) in human health, this study appraised the antibacterial and antibiofilm synergistic activity of meropenem and ZnO-NPs combination against carbapenem-resistant Klebsiella pneumoniae (CRKP). The minimum inhibitory concentration (MIC) of meropenem in combination was found to be approximately 1/12 of its MIC alone. The results of microtiter dilution assay showed that the combination was more efficient in reducing the biofilm biomass than meropenem alone or ZnO-NPs alone.

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In the course of their life, plants face a multitude of environmental anomaly that affects their growth and production. In recent decades, lead (Pb) gained an increasing attention as it is among the most significant contaminants in the environment. Therefore, in this study the effects of Pb concentrations (0, 50 and 100 ppm) on Vicia faba plants and attempts to alleviate this stress using chitosan (Chs; 0 and 0.

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Surgical correction is the main line of treatment for the congenital disorder Hirschsprung's disease (HD). Laparoscopic techniques proved their safety and efficacy in previous studies. LigaSure™ is the gold standard for colorectal dissection.

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Background: Wheat (Triticum aestivum L.) is one of the most widely grown and vital cereal crops, containing a high percentage of basic nutrients such as carbohydrates and proteins. Drought stress is one of the most significant limitations on wheat productivity.

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Background: The aim of this study was to compare and investigate the effects of 1-(3-phenyl-propyl) cyclopropene (PPCP) and melatonin (MT) as anti-ethylene agents on postharvest senescence, quality, chilling tolerance, and antioxidant metabolism in the mango fruit cv. "Keitt". The study involved exposing the fruit to 20 μL L PPCP or 200 μM MT, in addition to a control group of untreated fruit, before storing them at 5 ± 1 °C for 28 d.

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gene fusion is a rare genetic rearrangement in a variety of malignancies, including myeloproliferative neoplasms (MPN), acute lymphoblastic leukemia (ALL), and acute myeloid leukemia (AML). Here, we report the case of a 16-year-old male diagnosed with a MPN, 7 months post-completion of treatment for Burkitt leukaemia. RNA sequencing analysis confirmed the presence of an fusion transcript, with an intact, in-frame tyrosine-kinase domain.

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Background: Postoperative pain increases the incidence of venous thrombosis and respiratory complications, prevents early postoperative ambulation, and prolongs hospital stay. Fascial plane injections such as erector spinae plane (ESP) block and quadratus lumborum (QL) blocks are popular methods for postoperative pain control and reducing opioid consumption.

Objectives: We aimed to evaluate the analgesic effects of ultrasound-guided ESP versus QL block during laparoscopic cholecystectomy for the reduction of pain and analgesic consumption.

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We conducted integrative somatic-germline analyses by deeply sequencing 864 cancer-associated genes, complete genomes and transcriptomes for 300 mostly previously treated children and adolescents/young adults with cancer of poor prognosis or with rare tumors enrolled in the SickKids Cancer Sequencing (KiCS) program. Clinically actionable variants were identified in 56% of patients. Improved diagnostic accuracy led to modified management in a subset.

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is an opportunistic gram-negative human pathogen that causes a wide range of infections, including nosocomial infections. Aside from the intrinsic and acquired antimicrobial resistance against many classes of antibiotics, can produce an extracellular polymeric matrix called "biofilm" that protects bacteria from antibiotics and harmful factors. Biofilm enables to develop chronic infections.

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Introduction: Clinicians and healthcare professionals rely heavily on health-associated standards, such as reference intervals (RIs), for appropriate laboratory test result interpretation. RIs are commonly partitioned into discrete age/sex bins based on statistical and/or clinical significance. In pediatric hematology, such partitioning does not adequately represent complex variation in analyte concentrations throughout maturation.

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Children with Down syndrome have a 150-fold increased risk of developing myeloid leukemia, but the mechanism of predisposition is unclear. Because Down syndrome leukemogenesis initiates during fetal development, we characterized the cellular and developmental context of preleukemic initiation and leukemic progression using gene editing in human disomic and trisomic fetal hematopoietic cells and xenotransplantation. GATA binding protein 1 () mutations caused transient preleukemia when introduced into trisomy 21 long-term hematopoietic stem cells, where a subset of chromosome 21 microRNAs affected predisposition to preleukemia.

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Objective: To establish reference intervals for hemoglobin and mean corpuscular volume (MCV) in an ethnically diverse community sample of Canadian children 36 months and younger.

Methods: We collected blood samples from young children at scheduled primary care health supervision visits at 2 weeks, 2, 4, 6, 9, 12, 15, 18, 24, and 36 months of age. Samples were analyzed on the Sysmex XN-9000 Hematology Analyzer.

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Thalassemia is a major health problem in affected children due to iron overload, increased oxidative stress, atherogenic lipid profile and tissue-damage. This study aims at investigating the cardioprotective and tissue-protective benefits of Al-hijamah and their impact on cell-mediated immunity for treating thalassemic children. This study aimed also at investigating the tissue-clearance principle of Taibah mechanism: whenever pathological substances are to be cleared from the human body, Al-hijamah is indicated.

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Zamzam water is the most frequently used drinking water by millions of people in Saudi Arabia. It is carried all the time by millions of pilgrims to their home countries as gifts to close and near relatives and friends. Safety of constituents of Zamzam water is a vital health topic.

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Objective: Macrophage activation syndrome (MAS), a life-threatening inflammatory complication, is increasingly recognized in childhood-onset systemic lupus erythematosus (cSLE). It can be a challenge to differentiate active cSLE from MAS. We generated decision rules for discriminating MAS from active cSLE in newly diagnosed patients.

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Mutations in SH2D1A, encoding the intracellular adaptor signaling lymphocyte activation molecule associated protein (SAP), are associated with X-linked lymphoproliferative disease type 1 (XLP1). We identified a novel hemizygous SH2D1A c.49G > A (p.

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Chromosomal rearrangements resulting in fusion transcripts have been reported in precursor B-cell acute lymphoblastic leukemia (B-ALL). The identification of fusion events is crucial in the diagnosis of B-ALL. In this study, we used NanoString nCounter technology to design, validate, and evaluate a multiplex panel for the detection of B-ALL fusion transcripts.

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Background: Primary presentation of Hodgkin lymphoma (HL) with bone and/or bone marrow involvement is a rare entity. Diagnostic criteria, treatment approaches, and follow-up strategies for these patients have not been standardized.

Observation: We report a unique case of bone and bone marrow HL in an adolescent male without lymph node involvement.

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Diagnostic procedures in children with acute lymphoblastic leukemia (ALL) are typically performed under general anesthesia. Anticipation of the diagnosis based on findings in peripheral blood allows scheduling of the first dose of intrathecal chemotherapy and diagnostic bone marrow (BM) aspirate during a single anesthetic. We retrospectively compared paired results of peripheral blood (PB) flow cytometric analysis and BM evaluation in 383 children with ALL diagnosed consecutively at a single center and found very high concordance of results between both tests.

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Objectives: Nasal dermoid cysts are rare congenital lesions of ectodermal and mesodermal origin. Treatment of these cysts entails complete surgical excision, and several surgical incisions have been advocated. We present our experience utilizing an external rhinoplasty approach in seven children with nasal dermoid cysts and fistulae.

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Advanced myelodysplastic syndrome harbors a high risk of progression to acute myeloid leukemia and poor prognosis. In children, there is no established treatment to prevent or delay progression to leukemia prior to hematopoietic stem cell transplantation. Azacitidine is a hypomethylating agent, which was shown to slow progression to leukemia in adults with myelodysplastic syndrome.

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Background: ZNF384 gene rearrangements with multiple partner genes are recurrent in acute leukemia and are most often associated with a precursor B cell immunophenotype. The overall incidence of this genetic category of leukemia is uncertain.

Procedure: Patients with ZNF384 gene rearrangements from a cohort of 240 precursor B cell acute lymphoblastic leukemia (ALL) pediatric patients over a 3.

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Primary effusion lymphoma (PEL) is a rare lymphoma that occurs more frequently in immunocompromised adults and has a poor survival. We report a 9-year-old female with combined immunodeficiency with an Epstein-Barr virus positive/human herpes virus 8 negative PEL-like lymphoma. The treatment with systemic chemotherapy for non-Hodgkin lymphoma, zidovudine, and interferon-α failed to control disease progression.

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Background: In a collaboration between the Canadian Laboratory Initiative on Pediatric Reference Intervals (CALIPER) and the Canadian Health Measures Survey (CHMS), we determined reference value distributions using an a priori approach and created a comprehensive database of age- and sex-stratified reference intervals for clinically relevant hematologic parameters in a large household population of children and adults.

Methods: The CHMS collected data and blood samples from 11 999 respondents aged 3-79 years. Hematology markers were measured with either the Beckman Coulter HmX or Siemens Sysmex CA-500 Series analyzers.

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