Publications by authors named "Siham M El-Shenawy"

Etnopharmacological Relevance: Common sage (Salvia officinalis L., Lamiaceae), a medicinal plant of Mediterranean origin, has been traditionally applied in cases of excessive sweating, and in menopausal complaints, including hot flushes.

Aim Of The Study: This study aims to study the possible estrogenic effect of the aerial parts of S.

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Background: Pimenta racemosa tree has many traditional uses where its leaves are used as herbal tea for treatment of flatulence, gastric disorder, osteoarthritis, colds and fever in addition to its analgesic and anti-inflammatory activities. So, this study aimed to isolate phenolic constituents of 80% aqueous methanol extract (AME) of leaves and evaluate its biological activities.

Methods: The defatted AME was chromatographed and structures of the isolated compounds were elucidated using UV, NMR spectroscopy and UPLC-ESI-MS analysis.

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Background: Hort. ex Van Houte and Foug are flowering plants widely cultivated in Egypt for their ornamental value. Previous reports demonstrated that sesquiterpene derivatives represent the major compounds in both species.

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Aim: This novel multiparameter Phase I study aimed to optimize doses/dosing schedules of everolimus and sorafenib drug combination, based on modeling/simulation (NCT01932177).

Patients & Methods: About 26 patients with solid tumors were treated in four different dosing schedules. Everolimus once daily + sorafenib twice daily were given continuously in arms A and B, and intermittently in arms C (alternating every other week) and D (everolimus continuous and sorafenib 3 days on/4 days off).

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Objective: We aimed to investigate the effect of topical application of a Copper indomethacin (Cu-Indo) gel preparation on monosodium iodoacetate (MIA) induced arthritis of the knee joint of rats and to test our hypothesis that copper complex of indomethacin could be a more potent anti-inflammatory agent than its parent compound.

Methods: After induction of osteoarthritis by the intracapsular injection of 50 μL with 40 mg/mL MIA, we compared the anti-inflammatory efficacy and safety of a topical application of 1% indomethacin gel in a dose of 1 g/kg of the gel (equivalent to 10 mg/kg of the active substance) daily for 3 weeks versus three decremental dose levels of Cu-Indo gel: an equivalent dose, half the dose, and 25% of the dose of indomethacin. Anti-inflammatory efficacy was assessed in all treated groups by measurement of serum inflammatory cytokines: interleukin 6, interleukin 8, and tumor necrosis factor alpha; and by the weekly assessment of knee joint swelling.

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This study aimed to investigate the anti-depressant effect of hesperidin (Hsp) in streptozotocin (STZ)-induced diabetic rats. Additionally, the effect of Hsp on hyperglycaemia, oxidative stress, inflammation, brain-derived neurotrophic factor (BDNF), and brain monoamines in diabetic rats was also assessed. The Wistar rats in the experimental groups were rendered hyperglycaemic with a single dose of STZ (52.

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Gold nanorods (GNR) within tumor microregions are characterized by their ability to absorb near IR light and emit heat in what is called photoplasmonic effect. Yet, the efficacy of nanoparticles is limited due to intratumoral tissue distribution reasons. In addition, distribution of GNRs to normal tissue might result in non specific toxicity.

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Objectives: The aim of this study was to investigate a new flavone triglycoside, together with eleven phenolic metabolites from 80% aqueous methanol extract of S. splendens leaves (AME) and assessment of its hypoglycemic and antiinflammatory activities along with in vitro antioxidant effect.

Methods: The phenolic composition of S.

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Introduction: Many herbal medicinal products have potential hypocholesterolaemic activity and encouraging safety profiles. However, only a limited amount of clinical research exists to support their efficacy.

Aim Of The Work: The present study was designed to evaluate the antihypercholesterolaemic effects of aqueous ginger (Zingiber officinale) infusion in hypercholesterolaemic rat models.

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Two new flavonol glycosides, myricetin 4'-O-alpha-L-rhamnopyranoside (1) and quercetin 3'-O-alpha-L-rhamnopyranoside (2), together with a novel biflavonol compound, speciin (3), as well as eleven phenolic metabolites, namely myricitrin (4), europetin 3-O-alpha-L-(1)C(4)-rhamnopyranoside (5), quercitrin (6), hyperin (7), rhamnetin 3-O-beta-galacto-pyranoside (8), caffeic acid (9), caffeic acid methyl ester (10), chlorogenic acid (11), chlorogenic acid methyl ester (12), gallic acid (13) and gallic acid methyl ester (14), were identified from the 80 % methanol extract of the aerial parts (leaves and stems) of Oenothera speciosa Nutt. (Onagraceae). In addition myricetin (15), quercetin (16) and ellagic acid (17) were identified from the chloroform extract.

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The present study was designed to compare the protective effect of selenium and garlic against liver and kidney damage induced by (ip) injection of 0.5 mg/kg mercury chloride (HgCl(2)) in rats. Thirty-six Sprague-Dawley rats were used in the present experiment and divided into six groups: one group was orally given (1 ml) saline and served as a control group; two groups of rats were given either selenium (0.

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An efficient method for trapping isocyanate 4, generated from the Curtius rearrangement, with ethyl alcohol to afford the carbamate 5 is reported. 5-Nitrobenzo[b]thiophene-2-carboxylic acid 1 is converted to the corresponding hydrazide 2 by the reaction with hydrazine hydrate and then to the azide 3 with nitrous acid, followed by thermal rearrangement, cooling, and trapping in one pot reaction. The carbamate 5 is treated with hydrazine hydrate to afford the desired, Zileuton analogue, 4-(5-nitrobenzo[b]thiophene-2-yl)semicarbazide 6.

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Two new steroidal saponins, namely (25R)-5beta-spirostan-3-beta-ol 3-O-beta-D-galactopyranosyl-(1'''-->4'')-O-beta-D-galactopyranosyl-(1''-->3')-O-beta-D-glucopyranoside (2), and (25R)-5beta-spirostan-3-beta-ol 3-O-beta-D-galactopyranosyl-(1'''-->4'')-O-beta-D-glucopyranosyl-(1''-->3')-O-beta-D-glucopyranoside (3), together with six known constituents, have been isolated from the leaves of Dracaena ombet Kotschy & Peyr. (Dracaenaceae). The structures of the two saponins were established by chemical and physicochemical analyses, including FAB- and HR-ESI-MS and 2D NMR.

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Treatment of 3-cyanoacetyl indole 1 with the diazonium salts of 3-phenyl-5-aminopyrazole and 2-aminobenzimidazole afforded the corresponding hydrazones 4 and 5. 3-Cyanoacetyl indole reacted with phenylisothiocyanate to give the corresponding thioacetanilide derivative 7. Treatment of 7 with hydrazonoyl chlorides afforded the corresponding 1,3,4-thiadiazole derivatives 8a-f and 9.

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The effect of pentoxifylline (PTX) on acute liver injury caused by CCl4 or acetaminophen was studied in the rat. PTX was given twice daily (18, 36 or 72 mg/kg), intraperitoneally (ip) for 5 days prior to CCl4 or acetaminophen. In addition, the effect of PTX administered simultaneously with CCl4 or acetaminophen was evaluated.

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The effect of cysteamine, a specific somatostatin depletor, on biliary secretion was studied in urethane-anesthetized rats. Different groups of rats received ip cysteamine at 25, 100 or 340 mg/kg just before bile collection commenced. Other groups of rats were pretreated with cysteamine (340 mg/kg ip) at 4 or 24 h prior to bile duct cannulation and bile collection.

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Capsaicin is a popular food ingredient. This study aimed to determine if capsaicin can affect bile flow and bile protein secretion, and the extent to which capsaicin can reach bile in the rat. The effect of capsaicin was studied in anesthetized rats equipped with cannulas inserted into the common bile duct.

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The effects of the angiotensin-converting enzyme (ACE) inhibitor monopril and the angiotensin II receptor blocker losartan on serum glucose, protein levels and some serum lipid components were compared in normal and diabetic rats receiving oral antidiabetic drugs 'repaglinide or gliclazide'. The two antihypertensive agents, when administered concurrently with oral hypoglycemic agents 'repaglinide or gliclazide' in normal and diabetic rats exerted a significant hypoglycemic effect. Serum protein levels were mainly unaffected by the two antihypertensive drugs.

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The present study was designed to compare the anti-inflammatory and anti-nociceptive effects of different classes of antidepressant drugs on the carrageenan paw oedema and tail-electric stimulation assays in the rat. Drugs were intraperitoneally administered 30 min prior to carrageenan or nociceptive testing. The non-selective noradrenaline (NA) and serotonin (5-HT) reuptake inhibitors imipramine, amitriptyline and clomipramine displayed anti-inflammatory activity in the carrageenan model of paw inflammation.

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The present study aimed to evaluate the anti-inflammatory effects of pentoxifylline (PTX), a non-specific phosphodiesterase inhibitor in the rat. Acute inflammation was induced by subplantar injection of carrageenan (1%) in the rat hind paw. Results showed that intraperitoneal (i.

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The present study aimed to evaluate the anti-inflammatory and anti-nociceptive effects of melatonin in the rat. Acute inflammation was induced by sub-plantar injection of carrageenan (1%) in the rat hind paw. The rats received vehicle or drug 30 min before carrageenan administration and were evaluated for paw oedema at 1, 2, 3, and 4 h post-carrageenan.

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