Manal Mohamed Elhassan Taha

Dr. Manal Mohamed Elhassan Taha

orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2012 in Phytomedicine
Verified
Journal Article
Closed access
SMSyam Mohan
Syam Mohan
SASiddig Ibrahim Abdelwahab
Siddig Ibrahim Abdelwahab
BKBehnam Kamalidehghan
Behnam Kamalidehghan
SSSuvitha Syam
Suvitha Syam
KMKoh Sue May
Koh Sue May
Asdren ZajmiAsdren Zajmi
Asdren Zajmi

7 July 2023 in Antibiotics
Verified
Journal Article
Open access
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RSRAHAMAT UNISSA SYED
RAHAMAT UNISSA SYED
SMSivakumar Sivagurunathan Moni
Sivakumar Sivagurunathan Moni
MBMohammed Khaled Bin Break
Mohammed Khaled Bin Break
WKWeam M. A. Khojali
Weam M. A. Khojali
MJMohammed Jafar
Mohammed Jafar
Syam MohanSyam Mohan
Syam Mohan
Broccoli, Brassica oleracea var. italica, has recently gained considerable attention due to its remarkable nutritional composition and numerous health benefits. In this review, the nutritional aspects of broccoli are examined, highlighting its rich nutrient content and essential bioactive compounds. The cruciferous vegetable broccoli is a rich source of several important nutrients, including fiber, vitamins (A, C, and K), minerals (calcium, potassium, and iron), and antioxidants. It has also been shown to contain bioactive compounds such as glucosinolates, sulforaphane, and indole-3-carbinol, all of which have been shown to have significant health-promoting effects. These chemicals are known to have potent antioxidant, anti-inflammatory, and anticancer effects. This review article aims to comprehensively examine the diverse spectrum of nutrients contained in broccoli and explore its medicinal potential to promote human health.

1 September 2011 in Journal of Ethnopharmacology
Verified
Journal Article
Closed access
SASiddig Ibrahim Abdelwahab
Siddig Ibrahim Abdelwahab
SMSyam Mohan
Syam Mohan
MAMahmmod Ameen Abdulla
Mahmmod Ameen Abdulla
MSMohd Aspollah Sukari
Mohd Aspollah Sukari
AAAhmad Bustamam Abdul
Ahmad Bustamam Abdul
KLKa-Heng Lee
Ka-Heng Lee

23 March 2015 in PLOS ONE
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Journal Article
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HSHeyam Mohamed Ali Sidahmed
Heyam Mohamed Ali Sidahmed
NHNajihah Mohd Hashim
Najihah Mohd Hashim
MAMahmood Ameen Abdulla
Mahmood Ameen Abdulla
HAHapipah Mohd Ali
Hapipah Mohd Ali
SMSyam Mohan
Syam Mohan
JVJamuna Vadivelu
Jamuna Vadivelu
Zingiber zerumbet Smith is a perennial herb, broadly distributed in many tropical areas. In Malaysia, it’s locally known among the Malay people as “lempoyang” and its rhizomes, particularly, is widely used in traditional medicine for the treatment of peptic ulcer disease beyond other gastric disorders. The aim of the current study is to evaluate the gastroprotective effect of zerumbone, the main bioactive compound of Zingiber zerumbet rhizome, against ethanol-induced gastric ulcer model in rats. Rats were pre-treated with zerumbone and subsequently exposed to acute gastric ulcer induced by absolute ethanol administration. Following treatment, gastric juice acidity, ulcer index, mucus content, histological analysis (HE and PAS), immunohistochemical localization for HSP-70, prostaglandin E2 synthesis (PGE2), non-protein sulfhydryl gastric content (NP-SH), reduced glutathione level (GSH), and malondialdehyde level (MDA) were evaluated in ethanol-induced ulcer in vivo. Ferric reducing antioxidant power assay (FRAP) and anti-H. pylori activity were investigated in vitro. The results showed that the intragastric administration of zerumbone protected the gastric mucosa from the aggressive effect of ethanol-induced gastric ulcer, coincided with reduced submucosal edema and leukocyte infiltration. This observed gastroprotective effect of zerumbone was accompanied with a significant (p <0.05) effect of the compound to restore the lowered NP-SH and GSH levels, and to reduce the elevated MDA level into the gastric homogenate. Moreover, the compound induced HSP-70 up-regulation into the gastric tissue. Furthermore, zerumbone significantly (p <0.05) enhanced mucus production, showed intense PAS stain and maintained PG content near to the normal level. The compound exhibited antisecretory activity and an interesting minimum inhibitory concentration (MIC) against H. pylori strain. The results of the present study revealed that zerumbone promotes ulcer protection, which might be attributed to the maintenance of mucus integrity, antioxidant activity, and HSP-70 induction. Zerumbone also exhibited antibacterial action against H. pylori.

1 January 2012 in Evidence-Based Complementary and Alternative Medicine
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Journal Article
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AAAhmed S. AlRashdi
Ahmed S. AlRashdi
SSSuzy M. Salama
Suzy M. Salama
SASalim S. Alkiyumi
Salim S. Alkiyumi
MAMahmood A. Abdulla
Mahmood A. Abdulla
AHA. Hamid A. Hadi
A. Hamid A. Hadi
NANur Asykin
Nur Asykin
Jasminum sambacis used in folk medicine as the treatment of many diseases. The aim of the present investigation is to evaluate the gastroprotective effects of ethanolic extracts ofJ. sambacleaves against acidified ethanol-induced gastric ulcers in rats. Seven groups of rats were orally pre-treated with carboxymethylcellulose (CMC) as normal group, CMC as ulcer group, 20 mg/kg of omeprazole as positive group, 62.5, 125, 250, and 500 mg/kg of extract as the experimental groups, respectively. An hour later, CMC was given orally to normal group and acidified ethanol solution was given orally to the ulcer control, positive control, and the experimental groups. The rats were sacrificed after an hour later. Acidity of gastric content, the gastric wall mucus, ulcer areas, and histology and immunohistochemistry of the gastric wall were assessed. Gastric homogenates were determined for prostaglandin E2(PGE2), superoxide dismutase (SOD), andmalondialdehyde (MDA) content. Ulcer group exhibited significantly severe mucosal injury as compared with omeprazole or extract which shows significant protection towards gastric mucosal injury the plant promotes ulcer protection as it shows significant reduction of ulcer area grossly, and histology showed marked reduction of edema and leucocytes infiltration of submucosal layer compared with ulcer group. Immunohistochemistry showed overexpression of Hsp70 protein and downexpression of Bax protein in rats pretreated with extract. Significant increased in the pH, mucus of gastric content and high levels of PGE2, SOD and reduced amount of MDA was observed.

1 June 2013 in International Journal of Nanomedicine
Verified
Journal Article
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SASiddig Ibrahim Abdelwahab
Siddig Ibrahim Abdelwahab
MTManal Mohamed Elhassan Taha
Manal Mohamed Elhassan Taha
BSBassem Yousef Sheikh
Bassem Yousef Sheikh
CHCw How
Cw How
ESEl- Sunousi
El- Sunousi
ELTAYEB E.M EIDELTAYEB E.M EID
ELTAYEB E.M EID
Background: Nanostructured lipid carriers (NLCs), composed of solid and liquid lipids, and surfactants are potentially good colloidal drug carriers. Thymoquinone is the main bioactive compound of Nigella sativa. In this study, the preparation, gastroprotective effects, and pharmacokinetic (PK) properties of thymoquinone (TQ)-loaded NLCs (TQNLCs) were evaluated. Method: TQNLCs were prepared using hydrogenated palm oil (Softisan® 154), olive oil, and phosphatidylcholine for the lipid phase and sorbitol, polysorbate 80, thimerosal, and double distilled water for the liquid lipid material. A morphological assessment of TQNLCs was performed using various methods. Analysis of the ulcer index, hydrogen concentration, mucus content, and biochemical and histochemical studies confirmed that the loading of TQ into the NLCs significantly improved the gastroprotective activity of this natural compound against the formation of ethanol-induced ulcers. The safety of TQNLC was tested on WRL68 liver normal cells with cisplatin as a positive control. Results: The average diameter of the TQNLCs was 75 ± 2.4 nm. The particles had negative zeta potential values of −31 ± 0.1 mV and a single melting peak of 55.85°C. Immunohistochemical methods revealed that TQNLCs inhibited the formation of ethanol-induced ulcers through the modulation of heat shock protein-70 (Hsp70). Acute hepatotoxic effects of the TQNLCs were not observed in rats or normal human liver cells (WRL-68). After validation, PK studies in rabbits showed that the PK properties of TQ were improved and indicated that the drug behaves linearly. The Tmax, Cmax, and elimination half-life of TQ were found to be 3.96 ± 0.19 hours, 4811.33 ± 55.52 ng/mL, and 4.4933 ± 0.015 hours, respectively, indicating that TQ is suitable for extravascular administration. Conclusion: NLCs could be a promising vehicle for the oral delivery of TQ and improve its gastroprotective properties.