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  1. Article ; Online: Characterization and in-vitro Alzheimer’s properties of exopolysaccharide from Bacillus maritimus MSM1

    Manal S. Selim / Sahar S. Mohamed / Mohsen S. Asker / Abeer Y. Ibrahim / Samah A. El-Newary / Mohamed E. El Awady

    Scientific Reports, Vol 13, Iss 1, Pp 1-

    2023  Volume 17

    Abstract: Abstract Four bacterial isolates were obtained from marine sediments collected from Sahl Hashish, Hurghada Red Sea, Egypt. This study was designed to search for promising anti-Alzheimer natural polysaccharide; therefore, four isolates were screened for ... ...

    Abstract Abstract Four bacterial isolates were obtained from marine sediments collected from Sahl Hashish, Hurghada Red Sea, Egypt. This study was designed to search for promising anti-Alzheimer natural polysaccharide; therefore, four isolates were screened for exopolysaccharides (EPSs) production and acetylcholinesterase inhibition. The isolate S16 provided the highest EPS yield (7.51 g/L) and acetylcholinesterase inhibition. It was identified morphologically and genetically using 16S rRNA gene sequence analysis as Bacillus maritimus. A Physicochemical analysis of S16 exopolysaccharide (BMEPS) was estimated, which pointed to the presence of uronic acid and sulfate (24.7% and 18.3%, respectively). HPLC analysis indicated that mannuronic acid, glucuronic acid, glucose, and mannose are presented in a molar ratio of 0.8:1.0:2.8:2.3, respectively. Furthermore, FT-IR revealed an abundance of β-configurations. The GPC estimated the average molecular weight (Mw) as 4.31 × 104 g/mol. BMEPS inhibited AChE (IC50; 691.77 ± 8.65 μg/ ml), BChE (IC50; 288.27 ± 10.50 μg/ ml), and tyrosinase (IC50; 3.34 ± 0.09, 14.00 ± 0.14, and 22.96 ± 1.23 μg/ ml during incubation durations of 10, 20, and 40 min). It also demonstrated a selective anti-inflammatory action against COX-2 rather than COX-1. Moreover, BMEPS exhibited antioxidant capabilities as free radical and oxygen reactive species (ROS) scavenger, metal chelator, reductant agent, and lipid peroxidation suppressor. These activities are due to the distinct chemical composition. The findings of this study indicate that BMEPS could be considered as promising anti-disease Alzheimer's (AD) material in an in-vitro model, which qualifies it for advanced in-vivo studies in the discovery of alternative Alzheimer’s treatment.
    Keywords Medicine ; R ; Science ; Q
    Subject code 540
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Antioxidant, cytotoxicity and anti-tumor activity of Cordia dichotoma fruits accompanied with its volatile and sugar composition

    Abeer Y. Ibrahim / Samah A. El-Newary / Gamil E. Ibrahim

    Annals of Agricultural Sciences, Vol 64, Iss 1, Pp 29-

    2019  Volume 37

    Abstract: The aim of the present research was to investigate the chemical composition, antioxidant and anti-tumor effects of Cordia dichotoma fruit pulp extract “CDFP-extract”. Day after intraperitoneal inoculation of Ehrlich ascites carcinoma (EAC) cells in mice, ...

    Abstract The aim of the present research was to investigate the chemical composition, antioxidant and anti-tumor effects of Cordia dichotoma fruit pulp extract “CDFP-extract”. Day after intraperitoneal inoculation of Ehrlich ascites carcinoma (EAC) cells in mice, CDFP-extract was administered orally at 500 mg/kg body weight (equal to 0.10 of determined LD50) for ten consecutive days. CDFP-extract contains 112.71 ± 8.40 mg gallic acid/g, 69.76 ± 4.18 mg quercetin/g, 25.65 ± 1.80 mg catechin/g, 70.90 ± 2.92 mg total alkaloids/g extract. The high-performance liquid chromatography (HPLC) analysis for sugar determination showed that glucouronic acid was the main compound (34.08%) followed by sucrose, glucose, and fructose by 25.61%, 11.82%, and 8.95%, respectively. The gas-liquid chromatography (GC) and GC‐MS of the fruit showed that the presence of 19 volatile compounds were identified. The main constituents of the extract were bornyl acetate, α-terpineol, linaly butyrate, and α-phellandrene. The CDFP-extract showed a powerful effect in scavenging superoxide radicals and chelating metals ions as well as high reduction capability and total antioxidant capacity, dose-dependent manner. On the other hand, the viable Ehrlich cell count and solid tumor weight were significantly reduced by administration of CDFP extract and it increased non-viable cells. The CDFP-extract ameliorated all hematological parameters, this amelioration reflected on increasing median survival time and significant increase (p < 0.05) in life span. CDFP-extract appeared in antioxidant and anti-tumor activities. The anti-tumor activity of CDFP-extract may be attributed to phenols, flavonoids, tannins and glucouronic acid contents that are documented as an antioxidant, anti-inflammatory, and antitumor agents. Keywords: Volatile component, Phenolic content, Flavonoid content, Antioxidant, Antitumor, Cordia dichotoma
    Keywords Agriculture (General) ; S1-972
    Subject code 630
    Language English
    Publishing date 2019-06-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: A sulfated polyphenols-rich extract from Sabal yapa exhibits antitumor activities in Ehrlich ascites carcinoma

    Abdelgawad A. Fahmi / Mohamed A. El Raey / Abeer Y. Ibrahim / Mohamed A.O. Abdelfattah / Abeer M Abdelmageed / Mansour Sobeh

    Saudi Journal of Biological Sciences, Vol 28, Iss 5, Pp 3117-

    2021  Volume 3125

    Abstract: Cancer is the second leading cause of mortality accounting for one in every six deaths globally. Plant secondary metabolites, among them polyphenols, represent an effective and much safer alternative approach to the currently available medications. In ... ...

    Abstract Cancer is the second leading cause of mortality accounting for one in every six deaths globally. Plant secondary metabolites, among them polyphenols, represent an effective and much safer alternative approach to the currently available medications. In this work, utilizing LC-MS/MS, we characterized the constituents of S. yapa leaves extract and evaluated its antioxidant and anticancer properties. In total, 34 secondary metabolites, mainly flavonoids (Tricin, luteolin, and apigenin and their glucosides as well as sulfated derivatives) were identified. The extract manifested substantial antioxidant activity in DPPH assay, and high total phenolic content determined by Folin Ciocalteu method. The extract was safe up to 4800 mg/kg b.wt. when administered orally in mice and neither affected the hematological parameters nor the liver enzyme levels at the studied dose (LD50, 480 mg, kg b.wt.). In the treated animals, the extract surpassed the reference drug (5-flouro uracil) and significantly reduced the tumor volume and weight by 71.50 and 85.46%, respectively, increased the median survival time to 53.2 days and the lifespan by 116%. The extract improved all the hematological parameters, where it increased the hemoglobin (Hb) concentration, red blood cell (RBC) count, packed cell volume (PVC) and platelets by 58.21, 8.98, 9.89 and 120%, respectively, compared to the untreated EAC bearing animals. Additionally, the extract significantly declined the elevated levels of ALT and AST enzymes by 29.18% and 59.88%, respectively. In molecular docking, the annotated flavonoids displayed appreciable binding affinities to the active sites of VEGFR1 and VEGFR2. In conclusion, Saba yapa is a promising plant that can be introduced to further advanced clinical studies for the development of novel anticancer drugs with lower side effects.
    Keywords Sabal yapa ; Ehrlich ascites carcinoma ; Sulfated polyphenols ; Vascular endothelial growth factor B receptor ; Biology (General) ; QH301-705.5
    Subject code 630
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Evaluation of possible mechanisms of Cordia dichotoma fruits for hyperlipidemia controlling in Wistar albino rats

    Samah A El-Newary / Abeer Y Ibrahim / Samir M Osman / Michael Wink

    Asian Pacific Journal of Tropical Biomedicine, Vol 8, Iss 6, Pp 302-

    2018  Volume 312

    Abstract: Objective: To investigate the antioxidant capacity of aqueous extract from Cordia dichotoma (C. dichotoma) fruits in-vitro and their effect on nutritional parameters in rats fed on high-fat diet. Methods: In-vitro antioxidant capacity of C. dichotoma ... ...

    Abstract Objective: To investigate the antioxidant capacity of aqueous extract from Cordia dichotoma (C. dichotoma) fruits in-vitro and their effect on nutritional parameters in rats fed on high-fat diet. Methods: In-vitro antioxidant capacity of C. dichotoma extract were evaluated and compared to two standard materials, ascorbic acid and butylated hydroxytoluene. Metabolic experiments were set out using rats fed on high-fat diet. The extract was tested with two dosages: 0.5 and 1.0 g/kg body weight/ day for four weeks. Lipid constituents of diet and faeces and lipid profile of serum and liver were determined. Results: The administration of the C. dichotoma extract with two dosages caused a significant improvement in the lipid metabolism of rats, compared to the hyperlipidemic control which showed significant disturbance in lipid profile. C. dichotoma extract reduced total body weight gain and total feed intake, and enhanced the fresh and dry weight of faecal excretion. The superior effect was recorded with the high dosage of extract. C. dichotoma minimized fat and cholesterol intake significantly and maximized those in faecal excretions in comparison with hyperlipidemic control values, and low dosage was better than the high one. C. dichotoma extract at two dosages normalized the lipid profile of the serum and liver compared with hyperlipidemic control. Conclusions: The protective effect of C. dichotoma extract against hyperlipidemia may be attributed to the reduced ability of an animal to ingest and absorb fat and cholesterol, and enhanced ability to get rid of them in faecal excretion.
    Keywords cordia dichotoma fruits ; hyperlipidemia ; antioxidants activities ; cholesterol absorption ; Arctic medicine. Tropical medicine ; RC955-962 ; Biology (General) ; QH301-705.5
    Subject code 630
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Safety Profile of Meswak Root Extract on Liver, Kidney, Sexual Hormones and Hematological Parameters of Rats

    Abeer Y. IBRAHIM / Souad E. El-GENGAIHI

    Notulae Scientia Biologicae, Vol 4, Iss 1, Pp 18-

    2012  Volume 23

    Abstract: This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of ... ...

    Abstract This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of these root sticks. Regarding to acute toxicity test, mice were administered the extract up to 5 g kg-1, intraperitoneally. Animals were then observed for behavioural changes; signs of toxicity, and mortality within 24 h. Surviving mice were monitored for 7 days for signs of delayed toxicity. In the sub-chronic toxicity test, rats were daily treated with the extract at a dose of 400 mg kg-1 intraperitoneally, for 30 days. At the end of the test period, hematological and biochemical parameters were determined in blood and serum samples with determination of vital organs weights. In the acute toxicity test, the extract was practically non-toxic showing no mortality and visible signs of delayed toxicity. The LD50, given intraperitoneally, was estimated to be 4 g kg-1. Administration of extract (at a dose of 400 mg Kg-1 b.wt.) to male and female rats for 30 days did not produce any significant (P < 0.05) effect on hematological and most biochemical parameters also vital organs weights. The root extract showed adverse effects on sexual hormones, by increasing estrogen secretion and reducing testosterone level in male rats. At the same time, the extract reduces progesterone level in female satellite group. Overall, Meswak aqueous extract is safe concerning liver and kidney functions and hematological assessments; however, it induces reversal effect on sexual hormones levels determined in sera.
    Keywords Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
    Subject code 590
    Language English
    Publishing date 2012-02-01T00:00:00Z
    Publisher University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Safety Profile of Meswak Root Extract on Liver, Kidney, Sexual Hormones and Hematological Parameters of Rats

    Abeer Y. IBRAHIM / Souad E. El-GENGAIHI

    Notulae Scientia Biologicae, Vol 4, Iss 1, Pp 18-

    2012  Volume 23

    Abstract: This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of ... ...

    Abstract This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of these root sticks. Regarding to acute toxicity test, mice were administered the extract up to 5 g kg-1, intraperitoneally. Animals were then observed for behavioural changes; signs of toxicity, and mortality within 24 h. Surviving mice were monitored for 7 days for signs of delayed toxicity. In the sub-chronic toxicity test, rats were daily treated with the extract at a dose of 400 mg kg-1 intraperitoneally, for 30 days. At the end of the test period, hematological and biochemical parameters were determined in blood and serum samples with determination of vital organs weights. In the acute toxicity test, the extract was practically non-toxic showing no mortality and visible signs of delayed toxicity. The LD50, given intraperitoneally, was estimated to be 4 g kg-1. Administration of extract (at a dose of 400 mg Kg-1 b.wt.) to male and female rats for 30 days did not produce any significant (P < 0.05) effect on hematological and most biochemical parameters also vital organs weights. The root extract showed adverse effects on sexual hormones, by increasing estrogen secretion and reducing testosterone level in male rats. At the same time, the extract reduces progesterone level in female satellite group. Overall, Meswak aqueous extract is safe concerning liver and kidney functions and hematological assessments; however, it induces reversal effect on sexual hormones levels determined in sera.
    Keywords Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
    Subject code 590
    Language English
    Publishing date 2012-02-01T00:00:00Z
    Publisher Society of Land Measurements and Cadastre from Transylvania (SMTCT)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Safety Profile of Meswak Root Extract on Liver, Kidney, Sexual Hormones and Hematological Parameters of Rats

    Abeer Y. IBRAHIM / Souad E. El-GENGAIHI

    Notulae Scientia Biologicae, Vol 4, Iss 1, Pp 18-

    2012  Volume 23

    Abstract: This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of ... ...

    Abstract This study was conducted to investigate the safety profile of Salvadora persica (Salvadoraceae) aqueous alcoholic root extract by carrying out acute and sub-chronic toxicity assessment in order to find out any side effect of the traditionally using of these root sticks. Regarding to acute toxicity test, mice were administered the extract up to 5 g kg-1, intraperitoneally. Animals were then observed for behavioural changes; signs of toxicity, and mortality within 24 h. Surviving mice were monitored for 7 days for signs of delayed toxicity. In the sub-chronic toxicity test, rats were daily treated with the extract at a dose of 400 mg kg-1 intraperitoneally, for 30 days. At the end of the test period, hematological and biochemical parameters were determined in blood and serum samples with determination of vital organs weights. In the acute toxicity test, the extract was practically non-toxic showing no mortality and visible signs of delayed toxicity. The LD50, given intraperitoneally, was estimated to be 4 g kg-1. Administration of extract (at a dose of 400 mg Kg-1 b.wt.) to male and female rats for 30 days did not produce any significant (P < 0.05) effect on hematological and most biochemical parameters also vital organs weights. The root extract showed adverse effects on sexual hormones, by increasing estrogen secretion and reducing testosterone level in male rats. At the same time, the extract reduces progesterone level in female satellite group. Overall, Meswak aqueous extract is safe concerning liver and kidney functions and hematological assessments; however, it induces reversal effect on sexual hormones levels determined in sera.
    Keywords Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
    Subject code 590
    Language English
    Publishing date 2012-02-01T00:00:00Z
    Publisher Society of Land Measurements and Cadastre from Transylvania (SMTCT)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Effect of nitrogen fertilizers on productivity of Urtica pilulifera plant

    HEND E. WAHBA / HEMAIA M. MOTAWE / ABEER Y. IBRAHIM

    Nusantara Bioscience, Vol 6, Iss 1, Pp 49-

    2014  Volume 56

    Abstract: Wahba HE, Motawe HM, Ibrahim AY. 2014. Effect of nitrogen fertilizers on productivity of Urtica pilulifera plant. Nusantara Bioscience 6: 49-56. Urtica pilulifera L. have been known for a long time as a medicinal plant for treatments of many diseases, ... ...

    Abstract Wahba HE, Motawe HM, Ibrahim AY. 2014. Effect of nitrogen fertilizers on productivity of Urtica pilulifera plant. Nusantara Bioscience 6: 49-56. Urtica pilulifera L. have been known for a long time as a medicinal plant for treatments of many diseases, but its agricultural studies and chemical composition did not have enough researches. Two field experiments were carried out at the experimental farm of Faculty of Agriculture, Cairo University during two successive seasons 2009 and 2010, to study the effect of nitrogen dressing application (Urea, ammonium nitrate and ammonium sulfate) at different doses (0, 20, 40 and 60 N units/fed.) on growth, yield parameters and chemical composition of Urtica pilulifera plants. The results showed that the application of all nitrogen forms significantly increased the determined parameters as compared to untreated plants and the best treatment was ammonium sulfate at 60 N unit to increase quantitative and qualitative plant production.
    Keywords caffeic acid ; lipids ; nitrogen ; Urtica ; Biology (General) ; QH301-705.5
    Subject code 580
    Language English
    Publishing date 2014-05-01T00:00:00Z
    Publisher MBI & UNS Solo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: In-vivo hypoglycemic and hypolipidemic properties of Tagetes lucida alcoholic extract in streptozotocin-induced hyperglycemic Wistar albino rats

    Samah A. Abdel-Haleem / Abeer Y. Ibrahim / Rasha F. Ismail / Nermeen M. Shaffie / S.F. Hendawy / E.A. Omer

    Annals of Agricultural Sciences, Vol 62, Iss 2, Pp 169-

    2017  Volume 181

    Abstract: Impact of Tagetes lucida herb alcoholic extract on regulation of hyperglycemia, hyperlipidemia, and oxidative stress in streptozotocin-induced diabetic Wistar male albino rats was targeted in this research. T. lucida extract was administered to the ... ...

    Abstract Impact of Tagetes lucida herb alcoholic extract on regulation of hyperglycemia, hyperlipidemia, and oxidative stress in streptozotocin-induced diabetic Wistar male albino rats was targeted in this research. T. lucida extract was administered to the experimental rats at dose; 500 mg/kg/day orally for five weeks. The efficiency of extract to regulate hyperglycemia was evaluated in comparison with glibenclamid at its recommended dose (5 mg/kg/day orally). Recorded results indicated that T. lucida extract showed hypoglycemic activity presented as maintained body weight and significant reduction in blood glucose levels concurrence with remarkable increment in serum insulin levels. The extract exhibited hypolipidemic property pointed by significant good amendment on lipid profile lead to significant improvement in risk ratio. Anti-oxidative stress characters of extract was evaluated in liver and kidney antioxidant enzyme activities; catalase, superoxide dismutase, glutathione reductase, glutathione-S-transferase and glutathione peroxidase which were magnified in parallel with remarkable elevation on glutathione concentration comparable with diabetic control. Oppositely, oxidative stress markers; hydrogen-peroxide and malondialdehyde were significantly declined.
    Keywords Tagetes lucida ; Hypoglycemic effect ; Insulin concentration ; Hypolipidemic effect ; Antioxidant characters ; Agriculture (General) ; S1-972
    Language English
    Publishing date 2017-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: In-vivo hypoglycemic and hypolipidemic properties of Tagetes lucida alcoholic extract in streptozotocin-induced hyperglycemic Wistar albino rats

    Abdel-Haleem, Samah A / Abeer Y. Ibrahim / E.A. Omer / Nermeen M. Shaffie / Rasha F. Ismail / S.F. Hendawy

    Annals of agricultural science. 2017 Dec., v. 62, no. 2

    2017  

    Abstract: Impact of Tagetes lucida herb alcoholic extract on regulation of hyperglycemia, hyperlipidemia, and oxidative stress in streptozotocin-induced diabetic Wistar male albino rats was targeted in this research. T. lucida extract was administered to the ... ...

    Abstract Impact of Tagetes lucida herb alcoholic extract on regulation of hyperglycemia, hyperlipidemia, and oxidative stress in streptozotocin-induced diabetic Wistar male albino rats was targeted in this research. T. lucida extract was administered to the experimental rats at dose; 500 mg/kg/day orally for five weeks. The efficiency of extract to regulate hyperglycemia was evaluated in comparison with glibenclamid at its recommended dose (5 mg/kg/day orally). Recorded results indicated that T. lucida extract showed hypoglycemic activity presented as maintained body weight and significant reduction in blood glucose levels concurrence with remarkable increment in serum insulin levels. The extract exhibited hypolipidemic property pointed by significant good amendment on lipid profile lead to significant improvement in risk ratio. Anti-oxidative stress characters of extract was evaluated in liver and kidney antioxidant enzyme activities; catalase, superoxide dismutase, glutathione reductase, glutathione-S-transferase and glutathione peroxidase which were magnified in parallel with remarkable elevation on glutathione concentration comparable with diabetic control. Oppositely, oxidative stress markers; hydrogen-peroxide and malondialdehyde were significantly declined.
    Keywords agricultural sciences ; blood serum ; body weight ; catalase ; enzyme activity ; glutathione ; glutathione peroxidase ; glutathione transferase ; glutathione-disulfide reductase ; glycemic effect ; hydrogen peroxide ; hyperglycemia ; hyperlipidemia ; insulin ; kidneys ; laboratory animals ; lipid composition ; liver ; males ; malondialdehyde ; oxidative stress ; rats ; relative risk ; superoxide dismutase ; Tagetes
    Language English
    Dates of publication 2017-12
    Size p. 169-181.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 418898-6
    ISSN 0570-1783
    ISSN 0570-1783
    DOI 10.1016/j.aoas.2017.11.005
    Database NAL-Catalogue (AGRICOLA)

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