Publications by authors named "Mahmoud A El Hassab"

Introduction: Natural skincare products and cosmetic preparations have gained popularity among consumers in recent years, prompting cosmetic companies to develop more natural offerings. These products often incorporate plant extracts known for their anti-aging, anti-wrinkle, and depigmentation properties.

Methods: Using gas chromatography-mass spectrometry, this study examined the volatile compounds in both fresh and dry (key lime) fruit essential oils.

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Bougainvillea glabra is a well-known and well-documented ornamental plant belonging to family Nyctaginaceae, always planted for its beautifully colored flowers. The current study was performed for profiling the metabolites of B. glabra leaf extract.

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Introduction: Topical delivery of anti-inflammatory drugs is an important strategy for enhancing therapeutic efficacy while minimizing systemic side effects. This study focuses on improving the anti-inflammatory activity of Dexketoprofen by developing zein nanoparticles (ZNs) as a novel topical carrier system, aiming to optimize drug delivery and patient outcomes.

Methods: Dexketoprofen-loaded ZNs were prepared using an ethanol injection technique and optimized via a 2 full factorial design.

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Introduction: The genus comprises a large number of economically important fruit crops. They are recognized globally as functional foods and in the food, pharmaceutical, and cosmetic industries.

Methods: We present herein the chemical composition of the hexane extracts of (bitter orange) fruits and leaves by GC-MS for the first time, in addition to their antioxidant and enzyme inhibitory activities .

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Poly (ADP-ribose) polymerase (PARP) inhibitors have been authorized for the treatment of breast cancer (BC) and prostate cancer (PC). Recent studies suggest that inhibiting angiogenesis through the vascular endothelial growth factor receptor (VEGFR) enhances cellular sensitivity to PARP inhibitors. This study presents the design, synthesis and full characterization of dual VEGFR-2 and PARP-1 inhibitors obtained by conjugating a PARP-1 inhibitor with VEGFR-2 inhibitor fragments (indole, benzofuran, and piperazine).

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Lemon grass, formally identified as Cymbopogon citratus, is a plant that belongs to the Poaceae family. The present work aimed to examine the chemical composition by GC/MS analysis and assess the biological potential of C. citratus volatile oil and n-hexane extract.

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Presently, humanity is confronted with a range of diseases that have high death rates, especially those linked to cancerous growths. Several enzymes and proteins have been discovered as highly attractive targets for cancer treatment. The PARP family consists of 17 members and plays a crucial role in repairing DNA damage, which enables the survival of cancer cells.

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The current research focuses on the design and synthesis of celecoxib analogues incorporating sulphonamide and pyrazole moieties (4, 5, 6a-e, and 7a-f) with the aim of achieving a broad range of COX-2 selectivity in vitro. Among these, compounds 6b-d, 7a, 7e, and 7d exhibited potent inhibition, with IC values ranging between 0.05 and 0.

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The environmental and health impacts of chemical processes have been a growing concern, leading to the establishment of Green Chemistry principles. Introducing new metrics for the assessment of methods' greenness is crucial to evaluate the exerted efforts to conserve the environment. In this work, we introduce a Modified Green Star Area (MoGSA) and software to assess the greenness of chemical reactions in laboratory settings.

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Article Synopsis
  • - The study focuses on the SARS-CoV-2 main protease enzyme (Mpro) as a key target for developing therapies against COVID-19, following the significant global impact of the pandemic.
  • - Researchers utilized a computer-aided drug discovery process, which included designing a structure-based pharmacophore and filtering compounds from the ZINC chemical database, resulting in 703 potential candidates for Mpro inhibition.
  • - The top candidate, compound W1 (ZINC000150656136), demonstrated strong binding properties and interactions with Mpro, with promising docking scores, suggesting it could be a lead compound for further experimental validation and clinical testing.
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Article Synopsis
  • Thirteen components were identified in the methanol extract of Moricandia sinaica leaves using advanced analytical techniques, including various antioxidants like flavonoids and phenolic acids.
  • The extract demonstrated significant antioxidant activity in lab tests and showed hepatoprotective effects in rats, notably reducing liver enzyme levels and increasing important enzymes that help combat oxidative stress.
  • Overall, the study highlights the potential benefits of Moricandia sinaica leaves in protecting the liver and fighting oxidative damage due to their rich antioxidant profile.
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In today's medical field, there is a growing trend of exploiting a single small molecule to target two different molecular targets concurrently. This approach is proving to be highly effective in fighting against cancer. The 4-anilinoquinazoline scaffold, known for its potential in cancer therapy and its effectiveness as a leading class of tyrosine kinase inhibitors, was employed to develop a novel series of anilinoquinazoline-sulfonamides (AQSs) (8a-d, 9a-f, and 10a-d) as dual inhibitors of the tumor-associated carbonic anhydrases (CA) IX/XII and EGFR.

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Article Synopsis
  • * This study focuses on creating and testing new compounds (pyrazoline-phenoxyacetic acid derivatives) with 6a and 6c showing strong COX-2 inhibition and selectivity, which could be effective in treating inflammation without harmful side effects.
  • * Safety assessments of these compounds demonstrated positive results in male Wistar rats, with no adverse effects on vital organs, and molecular docking studies confirmed their therapeutic potential through significant interactions with COX-2.
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The goal of this research was to augment the deposition of caffeine loaded Transcutol® enriched cerosomes (TECs) gel for efficient topical treatment of cellulite utilizing the sonophoresis technique. Caffeine-loaded TECs were prepared using thin film hydration method applying 2 factorial design to study the impact of different factors, each with two levels on the entrapment efficiency (EE%), particle size (PS), polydispersity index (PDI), and zeta potential (ZP) of the formulated TECs. The studied factors were cetyl trimethyl ammonium bromide (CTAB) amount (mg) (X), phosphatidylcholine (PC) amount (mg) (X), and Transcutol® amount (mg) (X).

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There is still a great global need for efficient treatments for the management of SARS-CoV-2 illness notwithstanding the availability and efficacy of COVID-19 vaccinations. Olive leaf is an herbal remedy with a potential antiviral activity that could improve the recovery of COVID-19 patients. In this work, the olive leaves major metabolites were screened in silico for their activity against SARS-CoV-2 by molecular docking on several viral targets such as methyl transferase, helicase, Plpro, Mpro, and RdRp.

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The development of effective drugs targeting the K-Ras oncogene product is a significant focus in anticancer drug development. Despite the lack of successful Ras signaling inhibitors, recent research has identified PDEδ, a KRAS transporter, as a potential target for inhibiting the oncogenic KRAS signaling pathway. This study aims to investigate the interactions between eight K-Ras inhibitors (deltarazine, deltaflexin 1 and 2, and its analogues) and PDEδ to understand their binding modes.

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The Libyan Strawberry, Pampan (ARB), is an endemic Jebel Akhdar plant used for traditional medicine. This study presents the antioxidant and hepatoprotective properties of ARB fruit-extract. ARB phytochemical analysis indicated the presence of 354.

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Humanity is currently facing various diseases with significant mortality rates, particularly those associated with malignancies. Numerous enzymes and proteins have been identified as highly promising targets for the treatment of cancer. The poly(ADP-ribose) polymerases (PARPs) family comprises 17 members which are essential in DNA damage repair, allowing the survival of cancer cells.

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Article Synopsis
  • The study examines the phytoconstituents in the chloroform fraction of three plant species using UPLC/ESI/MS, identifying 19, 20, and 11 metabolites predominantly comprised of terpenoids, flavonoids, phenolic acids, and fatty acids.
  • An antioxidant analysis using FRAP and DPPH assays showed that the chloroform fraction of one specified species had the strongest antioxidant activity due to higher levels of total phenolics and flavonoids.
  • The research also assessed the inhibitory effects on enzymes COX-1, glucosidase, and amylase, finding the chloroform fraction to be particularly potent against COX-1, and molecular docking indicated that the major
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Joining the global effort to eradicate tuberculosis, one of the deadliest infectious killers in the world, we disclose in this paper the design and synthesis of new indolinone-tethered benzothiophene hybrids 6a-i and 7a-i as potential anti-tubercular agents. The MICs were determined in vitro for the synthesized compounds against the sensitive M. tuberculosis strain ATCC 25177.

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Significant advancements have been made in the domain of targeted anticancer therapy for the management of malignancies in recent times. VEGFR-2 is characterised by its pivotal involvement in angiogenesis and subsequent mechanisms that promote tumour cells survival. Herein, novel -arylmethyl-aniline/chalcone hybrids were designed and synthesised as potential anticancer and VEGFR-2 inhibitors.

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Thermoresponsive drug delivery systems have been used to treat diseases that cause hyperthermia or elevated body tissue temperatures, rheumatoid arthritis and different cancers. The aim of the study was to enhance berberine (BER) release using thermosensitive nanostructured lipid carriers (TNLCs) through intra-articular administration for the management of arthritis. TNLCs were prepared using binary mixtures of stearic acid and decanoic acid as solid and liquid lipids, respectively.

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Background/aim: Triple-negative breast cancer (TNBC) is characterized by poor prognosis, rapid progression, serious clinical behavior, an elevated risk of metastasis, and resistance to standard treatments. Traditional medicine practitioners value Rumex vesicarius L. (RMV) for a variety of reasons, including the plant's antioxidant capabilities.

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In this study, new benzothiazole-pyrimidine hybrids (-, , -, and -) were designed and synthesised. Two different functionalities on the pyrimidine moiety of lead compound were subjected to a variety of chemical changes with the goal of creating various functionalities and cyclisation to further elucidate the target structures. The potency of the new molecules was tested against different tuberculosis (TB) strains.

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