Abdelsamed I. Elshamy

ORCID: 0000-0003-3302-3623
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About
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Research Areas
  • Essential Oils and Antimicrobial Activity
  • Phytochemistry and Biological Activities
  • Allelopathy and phytotoxic interactions
  • Natural product bioactivities and synthesis
  • Marine Sponges and Natural Products
  • Microbial Natural Products and Biosynthesis
  • Sesquiterpenes and Asteraceae Studies
  • Fungal Biology and Applications
  • Plant Toxicity and Pharmacological Properties
  • Bioactive Natural Diterpenoids Research
  • Ethnobotanical and Medicinal Plants Studies
  • Plant biochemistry and biosynthesis
  • Drug-Induced Hepatotoxicity and Protection
  • Botany, Ecology, and Taxonomy Studies
  • Natural Antidiabetic Agents Studies
  • Chemical synthesis and alkaloids
  • Pharmacological Effects of Medicinal Plants
  • Phytochemistry and Bioactivity Studies
  • Phytochemistry and Bioactive Compounds
  • Traditional and Medicinal Uses of Annonaceae
  • Phytochemicals and Antioxidant Activities
  • Ginger and Zingiberaceae research
  • Synthesis and biological activity
  • Insect Pest Control Strategies
  • Cynara cardunculus studies

National Research Centre
2016-2025

Tokushima Bunri University
2017-2025

Academy of Scientific Research and Technology
2025

National Water Research Center
2022-2024

Zero to Three
2023

Weatherford College
2023

Griffith University
2019

IBM (Egypt)
2019

Pharmac
2017

Ain Shams University
2017

Plants are considered green resources for thousands of bioactive compounds. Essential oils (EOs) an important class secondary compounds with various biological activities, including allelopathic and antimicrobial activities. Herein, the present study aimed to compare chemical profiles EOs widely distributed medicinal plant Calotropis procera collected from Saudi Arabia Egypt. In addition, this also assess their The Egyptian ecospecies were extracted by hydrodistillation analyzed via GC-MS....

10.3390/molecules25215203 article EN cc-by Molecules 2020-11-09

Abstract Erigeron bonariensis is widely distributed throughout the world's tropics and subtropics. In folk medicine, E. has historically been used to treat head brain diseases. Alzheimer’s disease (AD) most widespread form of dementia initiated via disturbances in function. Herein, neuroprotective effect chemically characterized ethanolic extract reported for first time an AD animal model. Chemical profiling was conducted using UPLC–ESI-MS analysis. Female rats underwent ovariectomy (OVX)...

10.1007/s10787-023-01418-3 article EN cc-by Inflammopharmacology 2024-01-31

New pyrazolylindolin-2-one linked coumarin derivatives were designed as dual BRAF V600E /VEGFR-2 inhibitors targeting melanoma cells A375. Docking simulation showed various interactions with the binding residues in and VEGFR-2 active sites.

10.1039/d4ra00157e article EN cc-by-nc RSC Advances 2024-01-01

Background Diabetes mellitus (DM) poses a major risk to human health due an array of implications, one which is detrimental effect on the testicular and reproductive functions. Euphorbia heterophylla widely recognized for its medicinal properties worldwide. Methods findings The objective this study was profile E . ethanol extract (EH-EtOH) elucidate protective role in oxidative stress, relieving inflammatory action hyperglycemia-induced degeneration restoring normal histological structure...

10.1371/journal.pone.0314781 article EN cc-by PLoS ONE 2025-01-16

Abstract Essential oils ( EO s) from the aerial parts of three Launaea species collected two different habitats were extracted [ mucronata coastal desert LMC ) and inland LMD ), nudicaulis LNC LND spinosa LS )]. The s analysed by gas chromatography mass spectrometry GC ‐ MS tested for antioxidant activity as well allelopathic against purslane. A total 117 compounds identified all samples, including 64 , 50 39 24 20 representing 100% oil mass. oxygenated sesquiterpenes major 62.73, 61.02,...

10.1002/ffj.3512 article EN Flavour and Fragrance Journal 2019-06-20

The essential oil (EO) of Xanthium strumarium L. leaves (family: Asteraceae) was extracted by hydrodistillation, and then analyzed gas chromatography-mass spectrometry (GC-MS). Forty-three compounds were identified. sesquiterpenoids represented the major constituents (72.4%), including oxygenated (61.78%) non-oxygenated (10.62%) sesquiterpenes, followed monoterpenes (25.19%). diterpenoids hydrocarbons determined as minor compounds. main EO 1,5-dimethyltetralin (14.27%), eudesmol (10.60%),...

10.3390/molecules24030584 article EN cc-by Molecules 2019-02-07

Pulicaria genus (fleabane) is characterized by its fragrant odor due to the presence of essential oil (EO). According literature reviews, EO somalensis O.Hoffm. (Shie) still unexplored. For first time, 71 compounds were in derived from above-ground parts P. collected Saudi Arabia. Sesquiterpenes represented main components (91.8%), along with minor amounts mono-, diterpenes, and hydrocarbons. Juniper camphor (24.7%), α-sinensal (7.7%), 6-epi-shyobunol (6.6%), α-zingiberene (5.8%),...

10.3390/agronomy10030399 article EN cc-by Agronomy 2020-03-14

The variation in habitat has a direct effect on the plants and as consequence, changes their content of bioactive constituents biological activities. present study aimed to explore essential oils (EOs) phenolics Heliotropium curassavicum collected from coastal inland habitats. Additionally, we determined antioxidant allelopathic activity against weed, Chenopodium murale. Fifty-six compounds were identified overall EOs, which 25 components sample, 52 one. Sesquiterpenes main class both...

10.3390/plants8110482 article EN cc-by Plants 2019-11-07

Launaea nudicaulis is used in folk medicine worldwide to treat several diseases. The present study aimed assess the antidiabetic activity of L. ethanolic extract and its effect on diabetic complications streptozotocin-induced hyperglycemic rats. was orally administrated at 250 500 mg/kg/day for 5-weeks compared glibenclamide as a reference drug dose 5 mg/kg/day. Administration exhibited potential hypoglycemic manifested by significant depletion serum blood glucose concurrent with elevation...

10.3390/molecules26041000 article EN cc-by Molecules 2021-02-13

Plants belonging to the Asteraceae family are widely used as traditional medicinal herbs around world for treatment of numerous diseases. In this work, chemical profiles essential oils (EOs) above-ground parts Pluchea dioscoridis (L.) DC. and Erigeron bonariensis were studied in addition their cytotoxic anti-aging activities. The extracted EOs from two plants via hydrodistillation analyzed by gas chromatography-mass spectroscopy (GC-MS). GC-MS EO P. revealed identification 29 compounds...

10.3390/plants10040667 article EN cc-by Plants 2021-03-31

fruits are grown worldwide for their special nutritive and several health benefits. Among citrus bioactives, naringenin, a major flavanone, exhibits potential hepatoprotective effect that is not fully elucidated. Herein, serum biochemical parameters histopathological assays were used to estimate the activity of isolated from

10.3390/nu14040841 article EN Nutrients 2022-02-17

Catechin is a naturally occurring flavonoid of the flavan-3-ol subclass with numerous biological functions; however, these benefits are diminished due to several factors, including low water solubility and degradation in stomach's harsh environment. So, this study aimed develop an intelligent catechin colon-targeting delivery system high loading capacity. This was done by coating surface-decorated mesoporous silica nanoparticles pH-responsive enteric polymer called Eudragit®-S100. The...

10.1016/j.ejps.2023.106652 article EN cc-by-nc-nd European Journal of Pharmaceutical Sciences 2023-11-25

The characteristic chemical composition of Nigella seeds is directly linked to their beneficial properties. This study aimed investigate the phytochemical sativa using a 100% ethanolic extract HPLC-ESI-MS/MS. Additionally, it explored potential biological effects on female rat reproduction. Follicle Stimulating Hormone (FSH), Luteinizing (LH), Estrogen (E2), and Progesterone (P4) hormone levels were also assessed, along with morphological histological ovarian, oviductal, uterine tissues....

10.3390/molecules29030735 article EN cc-by Molecules 2024-02-05

Abstract The genus Euphorbia attracted the attention of many researchers worldwide from natural products, bioactivity, and ecological perspective. essential oils (EOs) heterophylla are poorly studied. Therefore, present study aimed to provide a detailed profile E. EOs as well determine their antioxidant allelopathic activities. aerial parts were extracted using hydrodistillation analyzed via GC/MS. activity was determined based on scavenging free radical, 1,1‐diphenyl‐2‐picrylhydrazyl H 2 O...

10.1002/cbdv.201900051 article EN Chemistry & Biodiversity 2019-03-16

The essential oil (EO) of Bassia muricata shoots was extracted via hydro-distillation and then investigated by gas chromatography-mass spectrometry. Thirty-four compounds were recognized for the first time from this plant, representing 100% total mass. Terpenoids represented major components with 69.17% mass, containing oxygenated sesquiterpenes (53.18%), monoterpenes (9.77%), sesquiterpene hydrocarbons (5.03%), diterpenes (1.19%). Additionaly, 6-methoxy-1-acetonaphthone only aromatic...

10.1016/j.sjbs.2020.04.018 article EN cc-by-nc-nd Saudi Journal of Biological Sciences 2020-04-18

Guava (Psidium guajava) leaves are commonly used in the treatment of diseases. They considered a waste product resulting from guava cultivation. The very rich essential oils (EOs) and volatiles. This work represents detailed comparative chemical profiles EOs derived six varieties cultivated Egypt, including Red Malaysian (RM), El-Qanater (EQ), White Indian (WI), Early (E), El-Sabahya El-Gedida (ESEG), (RI), on same farm Egypt. were extracted by hydro-distillation analyzed with GC-MS....

10.3390/molecules26010119 article EN cc-by Molecules 2020-12-29

Invasive species are considered as one of the major threats to ecosystems worldwide. Although invasive plants regarded a foe, they could be natural resources for valuable bioactive compounds. The present study aimed characterize chemical composition essential oil (EO) from plant Argemone ochroleuca Sweet, collected Saudi Arabia, well evaluate its phytotoxic activity. Seventy-four compounds were characterized via GC-MS analysis EO representing 98.75% overall mass. oxygenated constituents...

10.3390/plants9080998 article EN cc-by Plants 2020-08-05

The exploration of new bioactive compounds from natural resources as alternatives to synthetic chemicals has recently attracted the attention scientists and researchers. To our knowledge, essential oil (EO) Kickxia aegyptiaca not yet been explored. Thus, present study was designed explore EO chemical profile K. for first time, well evaluate its antioxidant antibacterial activities, particularly extracts this plant that have reported possess various biological activities. extracted aerial...

10.3390/plants11050594 article EN cc-by Plants 2022-02-23
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