Publications by authors named "Hashem H"

Inborn errors of immunity (IEI) are a heterogenous group of rare monogenic disorders that affect innate or adaptive immunity, resulting in susceptibility to life-threatening infections and autoimmunity. Allogeneic hematopoietic cell transplantation (HCT) is a valuable curative option for children with IEI. We conducted a retrospective single-center study on the outcome of HCT in children with IEI.

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Unlabelled: The demand for energy resources is constantly increasing. That means need more fossil fuels to provide them. People consume a lot of food and this produces many wastes.

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  • The study investigates a new ciprofloxacin-chalcone hybrid (CP derivative) for its potential anticancer effects as inhibitors of Topoisomerases I and II.
  • In vitro tests demonstrate that the CP derivative significantly reduces the growth of cancer cells, outperforming the standard drug Staurosporine.
  • The compound induces apoptosis and cell cycle arrest, and shows effective inhibition of Topo I and II enzymes, suggesting its potential as a new anticancer therapy.
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  • The study focused on antimicrobial resistance in carbapenem-resistant clinical isolates and their ability to produce biofilms and various resistance enzymes.
  • About 50% of the isolates were multidrug-resistant, with 98.4% producing extended-spectrum β-lactamases and significant levels of biofilm production.
  • The presence of multiple resistance genes was common, indicating a high prevalence of antimicrobial resistance mechanisms, which may contribute to the emergence of multidrug-resistant phenotypes.
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Commonly used antimicrobial agents are no longer effective due to their overuse or misuse. In addition, many medicinal plant extracts can combat infectious diseases due to their main active constituents or secondary metabolites. The current study aimed to assess the bioactivities of (LN) leaf extract (LE) against different multi-drug resistant (MDR) () isolates.

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  • * A study reviewed 166 patient records, focusing on 143 without prior central nervous system (CNS) involvement, and analyzed the outcomes of those who received TBI with or without CRB.
  • * Results showed no significant differences in relapse rates or survival between patients with and without CRB, indicating that adding CRB may not provide extra benefits in preventing relapses after transplantation.
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Indole derivatives have become an important class of compounds in medicinal chemistry, recognized for their wide-ranging biological activities and therapeutic potential. This review provides a comprehensive overview of recent advances in the evaluation of indole-based compounds in the last five years, highlighting their roles in cancer treatment, infectious disease management, anti-inflammatory therapies, metabolic disorder interventions, and neurodegenerative disease management. Indole derivatives have shown significant efficacy in targeting diverse biological pathways, making them valuable scaffolds in designing new drugs.

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  • - A new series of thiazole-based chalcones was tested for anticancer properties, showing effective inhibition of cancer cell growth, particularly in Ovar-3 and MDA-MB-468 cells, at concentrations between 1.55 and 2.95 μM.
  • - One compound notably inhibited tubulin polymerization with an IC value of 7.78 μM, which is less effective than the reference drug Combretastatin-A4 (CA-4) at 4.93 μM.
  • - Molecular docking studies indicated that these compounds effectively bind to the same site on tubulin as CA-4, along with predictions suggesting they have good oral bioavailability and potential as chemotherapy drugs.
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In today's sociopolitical climate (e.g., erasure of history, increase in anti-Asian violence, repeal of affirmative action), the fragility of minoritized alliances has become more prominently exposed.

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  • - The study investigates the survival outcomes of patients receiving umbilical cord blood transplants (UCBT) across different racial and ethnic groups, focusing on Black, Latinx, White, and Asian patients, as previous research indicated disparities in survival rates.
  • - A retrospective analysis of data from the Center for International Blood and Marrow Transplant Research (CIBMTR) included 983 single and 1529 double UCBT recipients, measuring outcomes like overall survival (OS), disease-free survival, and transplant-related mortality over two years.
  • - Results showed that while overall survival rates varied by race/ethnicity, with Latinx patients having significantly lower OS compared to Blacks, no significant differences were observed in child patients,
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Green and efficient agro-waste-based activated carbon has been prepared utilizing peanut shells for adsorptive elimination of an industrial dye, methylene blue, and lead from polluted water. The carbonaceous biomass obtained from peanut shells was chemically activated using either NaOH, ZnCl, or steam and characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, and N adsorption and desorption studies. The adsorption process was optimal for methylene blue at alkaline pH, while pH 4.

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  • There has been an increase in the number of hematopoietic cell transplants (HCT) and improvement in overall survival after these procedures for blood disorders, but the impact on racial/ethnic minorities is unclear.
  • A study examined transplant rates and survival trends among non-Hispanic Whites, non-Hispanic African Americans, and Hispanics from 2009 to 2018, revealing that Hispanics and non-Hispanic African Americans experienced higher rates of transplant than non-Hispanic Whites.
  • Despite overall improvements in survival rates across groups, non-Hispanic African Americans faced greater mortality risks after allogeneic transplants, indicating ongoing disparities that need to be addressed.
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This study deals with the investigation of the water removal efficiency (WRE) from crude oil using a commercial demulsifier. The impacts of time, demulsifier concentration, and temperature on WRE were experimentally studied. The results implied the fact that temperature plays a substantial role in the demulsification and has a direct correlation with WRE.

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Myeloid leukemia is a chronic cancer, which associated with abnormal BCR-ABL tyrosine kinase activity. Imatinib (IMB) acts as a tyrosine kinase inhibitor and averts tumor growth in cancer cells by controlling cell division, so it is urgent to develop an effective assay to detect and monitor its IMB concentration. Therefore, an innovative fluorescent biomimetic sensor is a promising sensing material that constructed for the efficient recognition of IMB and displays excellent selectivity and sensitivity stemming from molecularly imprinted polymer@FeO (MIP@FeO).

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The new era of solid contact ion selective electrodes (SC-ISEs) miniaturized design has received an extensive amount of concern. Because it eliminated the requirement for ongoing internal solution composition optimization and created a two-phase system with stronger detection limitations. Herein, the determination of venlafaxine HCl is based on a comparison study between different ion- to electron transduction materials (such as; multiwalled carbon nanotubes (MWCNTs), polyaniline (PANi), and ferrocene) and illustrating their mechanisms in their applied sensors.

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This study aims to study the effect of substituting soybean oil (SO) with rice bran oil (RBO) at different levels (25%, 50%, and 75%) on the physical and chemical properties, fatty acid composition, and oxidative stability of SO, also, study the effect of storing SO, RBO, and their blend oils at ambient temperature for a period of 12 months on the content of free fatty acids (% FFA), peroxide value (PV), and thiobarbituric acid (TBA). RBO demonstrated good quality, as evidenced by its initial low values of % FFA, PV, and TBA. Furthermore, RBO was found to be an excellent source of γ-oryzanol, whereas the other oils lacked this compound.

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This study demonstrates the control of neuronal survival and development using nitrogen-doped ultrananocrystalline diamond (N-UNCD). We highlight the role of N-UNCD in regulating neuronal activity via near-infrared illumination, demonstrating the generation of stable photocurrents that enhance neuronal survival and neurite outgrowth and foster a more active, synchronized neuronal network. Whole transcriptome RNA sequencing reveals that diamond substrates improve cellular-substrate interaction by upregulating extracellular matrix and gap junction-related genes.

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Computer-aided drug design has been employed to get the medicinal effects against Corona virus from different pyridine derivatives after synthesizing the new compounds. Additionally, various computational studies are also employed between the newly prepared pyridine derivatives and three controls against three proteins (6Y2E, 6M71 and 6M3M). Different methods were employed to synthesize new pyridine derivatives according to the literature using different reaction mediums.

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Background: Tramadol (TRM) and celecoxib (CLX) form a novel mixture that helps relieve acute pain when other painkillers have no action. It is also reported that these drugs, TRM and CLX, are used to control COVID-19 symptoms.

Objective: The current work highlights three important pillars of modern pharmaceutical analysis, which are as follows; impurity profiling, greenness/whiteness studies and simplicity accompanied by sensitivity.

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The strategic planning of this study is based upon using the nanoformulation method to prepare nanoparticles and of the previously prepared 4,5-diphenyl-1-pyrazolo[3,4-]pyridazin-3-amine () after confirming its structure with single crystal X-ray analysis. These nanoparticles exhibited promising cytotoxic activity against HepG-2, HCT-116 and MCF-7 cancer cell lines in comparison with the reference doxorubicin and the original derivative . Moreover, their inhibitory assessment against EGFR and CDK-2/cyclin A2 displayed improved and more favorable impact than the parent and the references.

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Objectives: To evaluate the accuracy of greyscale ultrasound (US) and colour Doppler detecting placenta accreta spectrum (PAS) based on the newly recommended International Federation of Obstetrics and Gynaecology (FIGO) grading system.

Methods: This prospective study was conducted on women diagnosed with placenta previa or low-lying placenta involving the anterior uterine wall and associated with PAS as identified by the US. Transabdominal and transvaginal greyscale US was performed on admission between 34 and 36 weeks of gestation and compared to clinical grading and histopathological examination after cesarean hysterectomy.

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We report a case series of supernumerary puncta-canaliculi, a very rare congenital anomaly, and describe different clinical presentations and new treatment options. This is a retrospective chart review of patients diagnosed with supernumerary lacrimal puncta during the time between June 2015 and December 2021 at the Research Institute of Ophthalmology, Giza, Egypt. Four patients (two females and two males) with a mean presenting age of 54 ± 14 years had unilateral double puncta.

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Background: Weaning from mechanical ventilation is a challenging phase of neonatal respiratory support [1]. Choosing efficient and safe noninvasive modality to prevent re-intubation and choosing the optimal time for weaning are key points for weaning success. The aim of the study is to compare the efficiency and safety of noninvasive high frequency oscillatory ventilation (NHFOV) versus noninvasive positive pressure ventilation (NIPPV) as respiratory support after extubation in preterms with respiratory distress syndrome (RDS).

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