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1.
Bull Environ Contam Toxicol ; 92(1): 85-9, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24213591

RESUMEN

Laboratory studies were conducted to determine the effects of different concentrations of pyrimethinal on protein contents, and some oxidative stress in Tubifex tubifex after an exposure of 2, 4, and 7 days. Residues of the fungicide were followed in water and in the worms. In water, pyrimethinal concentration decreased slowly (maximum -6.4 % ± 0.8 % after 2 days for 25 mg L(-1)). In the worms, it increased after 4 days and decreased thereafter. LC50 values were between 49.2 ± 0.58 and 39.5 ± 0.95 mg L(-1) depending on exposure time. The activity of catalase increased in response to the fungicide after 2 days of exposure to 25 mg L(-1) of pyrimethinal (+90 %). The highest decrease of glutathione-S-transferase activity (-29.7 %) was found after 7 days in the presence of 25 mg L(-1).


Asunto(s)
Compuestos de Anilina/toxicidad , Fungicidas Industriales/toxicidad , Pirimidinas/toxicidad , Contaminantes Químicos del Agua/toxicidad , Animales , Catalasa/metabolismo , Glutatión Transferasa/metabolismo , Oligoquetos/fisiología , Estrés Oxidativo
2.
Naunyn Schmiedebergs Arch Pharmacol ; 396(4): 719-736, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36469109

RESUMEN

A new chalcone series has been developed that may be useful in the treatment of lung cancer. The new series was confirmed by the different spectral tools. MTT assay was used to detect the cytotoxic effect of the novel chalcones against lung cancer cell line (A549). Molecular docking studies were performed on the most two effective chalcones 7b and 7c. Different molecular techniques were utilized to study the activity and the effect of two chalcones 7b and 7c on apoptosis of A549 cell line.


Asunto(s)
Antineoplásicos , Carcinoma , Chalconas , Neoplasias Pulmonares , Humanos , Chalconas/farmacología , Chalconas/uso terapéutico , Simulación del Acoplamiento Molecular , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/patología , Células A549 , Pulmón/patología , Furanos/farmacología , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Relación Estructura-Actividad , Apoptosis , Proliferación Celular , Línea Celular Tumoral
3.
Integr Cancer Ther ; 21: 15347354221099537, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35583244

RESUMEN

Breast cancer is the most harmful malignancy in women worldwide. Therefore, in the current study, we investigated the combinatory effect of natural bioactive compounds, including curcumin (Cur) and thymoquinone (TQ), on MCF7 and MDA-MB-231 breast cancer cell lines' progression. We investigated the Fa values and combination index of Cur and TQ in this context. Moreover, cytotoxicity percentages, annexin-V, proliferation, colony formation, and migration assays were used along with cell cycle analysis. In addition, caspase-3, phosphatidylinositol 3-kinase (PI3K), and protein kinase B (AKT) protein levels were determined by ELISA assessment. The results showed that Cur, TQ, and Cur + TQ induced apoptosis with cell cycle arrest and decreased cell proliferation, colony formation, and migration activities. Cur + TQ combination significantly increased caspase-3 and decreased PI3K and AKT protein levels. These results suggest the promising anticancer benefit of the Cur and TQ combination against breast cancer.


Asunto(s)
Neoplasias de la Mama , Curcumina , Apoptosis , Benzoquinonas/farmacología , Neoplasias de la Mama/metabolismo , Caspasa 3 , Línea Celular Tumoral , Proliferación Celular , Curcumina/farmacología , Femenino , Humanos , Células MCF-7 , Fosfatidilinositol 3-Quinasas , Proteínas Proto-Oncogénicas c-akt
4.
Front Pharmacol ; 13: 936996, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35847018

RESUMEN

Cancer can develop due to abnormal cell proliferation in any body's cells, so there are over a hundred different types of cancer, each with its distinct behavior and response to treatment. Therefore, many studies have been conducted to slow cancer progression and find effective and safe therapies. Nutraceuticals have great attention for their anticancer potential. Therefore, the current study was conducted to investigate the anticancer effects of curcumin (Cur), thymoquinone (TQ), and 3, 3'-diindolylmethane (DIM) combinations on lung (A549) and liver (HepG2) cancer cell lines' progression. Results showed that triple (Cur + TQ + DIM) and double (Cur + TQ, Cur + DIM, and TQ + DIM) combinations of Cur, TQ, and DIM significantly increased apoptosis with elevation of caspase-3 protein levels. Also, these combinations exhibited significantly decreased cell proliferation, migration, colony formation activities, phosphatidylinositol 3-kinase (PI3K), and protein kinase B (AKT) protein levels with S phase reduction. Triple and double combinations of Cur, TQ, and DIM hindered tumor weight and angiogenesis of A549 and HepG2 implants in the chorioallantoic membrane model. Interestingly, Cur, TQ, and DIM combinations are considered promising for suppressing cancer progression via inhibiting tumor angiogenesis. Further preclinical and clinical investigations are warranted.

5.
Int J Biol Macromol ; 182: 464-471, 2021 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-33838197

RESUMEN

It is generally believed that the most challenging impediment for the utilization of cellulose acetate (CA) in the medical field is its hydrophobicity and disability to poison the harmful microbes. Therefore, in this contribution, we aimed to prepare an environmentally scaffold-based CA loaded with copper nanoparticles (CuONPs), which are expected to not only improve the hydrophilicity of the prepared nanofibers, but also have an effective ability to kill such harmful and infectious microbes that are abundant in wounds. The obtained results attested that the generated nanofibers became thicker with increasing the content of CuONPs in CA nanofibers. The roughness average increased from 143.2 to 157.1 nm, whereas the maximum height of the roughness (Rt) increased from 400.8 to 479.9 nm as going from the lowest to the highest content of CuONPs. Additionally, the contact angle of the prepared nanofibers decreased from 105.3° (CA alone) to 85.4° for CuONPs@CA. Significantly, biological studies revealed that cell viability and anti-bacterial potency were improved upon incorporating CuONPs into CA solution. Correspondingly, their inhibition zones reached 18 ± 3 mm, and 16 ± 2 mm for nanofibrous scaffolds having 12.0CuO@CA, besides raising the cell viability from 91.3 ± 4% to 96.4 ± 4% for 0.0CuO@CA, and 12.0CuO@CA, respectively, thereby implying that the fabricated CuONPs@CA nanocomposite has biocompatibility towards fibroblast cells. Thus, introducing biological activity into CA nanofibers via loading with CuONPs makes it suitable for numerous biomedical applications, particularly as an environmentally benign wound dressing fibers.


Asunto(s)
Celulosa/análogos & derivados , Cobre/química , Nanopartículas del Metal/química , Nanofibras/química , Línea Celular , Supervivencia Celular , Celulosa/química , Fibroblastos/efectos de los fármacos , Humanos , Nanopartículas del Metal/efectos adversos , Nanofibras/efectos adversos
6.
Integr Cancer Ther ; 20: 15347354211035450, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34490824

RESUMEN

Doxorubicin (Dox) induces senescence in numerous cancer cell types, but these senescent cancer cells relapse again if they are not eliminated. On this principle, we investigated the apoptotic effect of thymoquinone (TQ), the active ingredient of Nigella sativa seeds and costunolide (COS), the active ingredient of Costus speciosus, on the senescent colon (Sen-HCT116) and senescent breast (Sen-MCF7) cancer cell lines in reference to their corresponding proliferative cells to rapidly eliminate the senescent cancer cells. The senescence markers of Sen-HCT116 and Sen-MCF7 were determined by a significant decrease in bromodeoxyuridine (BrdU) incorporation and significant increases in SA-ß-gal, p53, and p21 levels. Then proliferative, Sen-HCT116, and Sen-MCF7 cells were subjected to either TQ (50 µM) or COS (30 µM), the Bcl2-associated X protein (Bax), B-cell lymphoma 2 (Bcl2), caspase 3 mRNA expression and its activity were established. Results revealed that TQ significantly increased the Bax/Bcl2 ratio in HCT116 + Dox5 + TQ, MCF7 + TQ, and MCF7 + Dox5 + TQ compared with their corresponding controls. COS significantly increased the Bax/Bcl2 ratio in HCT116 + Dox5 + TQ and MCF7 + Dox5 + TQ compared with their related controls. Also, TQ and COS were significantly increased caspase 3 activity and cell proliferation of Sen-HCT116 and Sen-MCF7. The data revealed a higher sensitivity of senescent cells to TQ or COS than their corresponding proliferative cells.


Asunto(s)
Apoptosis , Recurrencia Local de Neoplasia , Benzoquinonas , Colon , Doxorrubicina/farmacología , Humanos , Sesquiterpenos
7.
Spectrochim Acta A Mol Biomol Spectrosc ; 228: 117700, 2020 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-31748163

RESUMEN

Designing new metal-based molecular antibiotics is an efficient approach to overcome the growing threat of antimicrobial resistance. In this paper, novel Cr(III), Fe(III) and Cu(II) complexes comprising substituted aryl imidazole ligand (MSEB), namely (2-(1-(2-hydroxyethyl)-4,5-diphenyl-1H-imidazole-2-yl)(4-bromophenol)) have been synthesized and characterized using infra-red (IR), ultraviolet-visible (UV-Vis) and 1H, 13C NMR spectroscopic techniques, together with elemental (CHN) and thermogravimetric analyses, molar conductance, and magnetic susceptibility measurements. The combined results along with the DFT calculations revealed a 1:1 (M: L) stoichiometric ratio and the complexes adopted distorted-octahedral geometries to afford [Cr(MSEB)Cl2(H2O)2], [Fe(MSEB)(NO3)2(H2O)2] and [Cu(MSEB)Cl(H2O)3] respectively. Biological studies showed that all complexes exhibited powerful antimicrobial activity against various strains of bacteria and fungi, S. aureus (+ve), E. coli (-ve) and P. aeruginosa (-ve) bacteria and T. Rubrum, C. albicans, and A. flavus fungi. Moreover, the three metal-complexes showed high in vitro cytotoxicity against Colon (HCT-116), Breast (MCF-7), and hepatic cellular (HepG-2) carcinoma cell lines, with MSEBCu complex being the most cytotoxic one. Finally the binding interactions of the complexes with CT-DNA were explored using UV-Vis spectroscopy, viscosity and gel electrophoreses measurements.


Asunto(s)
Cromo/química , Complejos de Coordinación/síntesis química , Cobre/química , ADN/metabolismo , Teoría Funcional de la Densidad , Imidazoles/química , Hierro/química , Antiinfecciosos/farmacología , Antineoplásicos/farmacología , Bacterias/efectos de los fármacos , Espectroscopía de Resonancia Magnética con Carbono-13 , Línea Celular Tumoral , Conductividad Eléctrica , Hongos/efectos de los fármacos , Humanos , Concentración de Iones de Hidrógeno , Imidazoles/síntesis química , Concentración 50 Inhibidora , Cinética , Ligandos , Fenómenos Magnéticos , Pruebas de Sensibilidad Microbiana , Modelos Moleculares , Espectroscopía de Protones por Resonancia Magnética , Espectrofotometría Infrarroja , Termodinámica , Termogravimetría , Viscosidad
8.
Saudi J Biol Sci ; 26(7): 1436-1441, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31762606

RESUMEN

5' AMP-activated protein kinase (AMPK), insulin receptors and transporters are distorted in diabetes mellitus. In this study, the effect of Panax ginseng was assessed on glucose manipulating enzymes activities and gene expression of AMPK, IRA and GLUT2 in streptozotocin-induced diabetic male rats. Forty male albino rats were randomly divided to four groups 10 rats of each, group I, normal control group (received saline orally); group II, normal rats received 200 mg/kg of Panax ginseng orally; group III, Streptozotocin (STZ) -induced diabetic rats and group IV, STZ-induced diabetic rats received 200 mg/kg of Panax ginseng orally. The duration of experiment was 30 days. Results showed the ability of Panax ginseng to induce a significant decrease in the blood glucose and increase in the serum insulin levels, hepatic glucokinase (GK), and glycogen synthase (GS) activities with a modulation of lipid profile besides high expression levels of AMPK, insulin receptor A (IRA), glucose transporting protein-2 (GLUT-2) in liver of diabetic rats. In conclusion, the obtained results point to the ability of Panax ginseng to improve the glucose metabolism in diabetic models.

10.
Nanomaterials (Basel) ; 9(11)2019 Nov 12.
Artículo en Inglés | MEDLINE | ID: mdl-31726731

RESUMEN

We report a novel, simple, efficient, and green protocol for biogenic synthesis of silver nanoparticles (AgNPs) in aqueous solution using clove (Syzygium aromaticum) extract as a reducing and protecting agent. Ultraviolet-visible (UV-Vis) spectroscopy was employed to monitor the localized surface plasmon resonance (LSPR) band of clove extract-derived AgNPs prepared under various conditions. Fourier-transform infrared (FTIR) spectroscopy analysis provided information about the surface interaction of the clove extract with the AgNPs. Ultrahigh-resolution transmission electron microscopy (UHRTEM) results confirmed the formation of spherical, uniformly distributed clove extract-capped AgNPs with sizes in the range of 2-20 nm (average size: 14.4 ± 2 nm). Powder X-ray diffractometry analysis (PXRD) illustrated the formation of pure crystalline AgNPs. These AgNPs were tested as a colorimetric sensor to detect trace amounts of vinclozolin (VIN) by UV-Vis spectroscopy for the first time. The AgNP-based sensor demonstrated very sensitive and selective colorimetric detection of VIN, in the range of 2-16 µM (R2 = 0.997). The developed sensor was green, simple, sensitive, selective, economical, and novel, and could detect trace amounts of VIN with limit of detection (LOD) = 21 nM. Importantly, the sensor was successfully employed for the determination of VIN in real water samples collected from various areas in Turkey.

11.
PLoS One ; 12(9): e0185096, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28934322

RESUMEN

A total of 145007 reads were obtained from pyrosequencing for all the 4 samples. The total count ranged from 11,301,014 (Mecca old road) to 23,503,512 bp (Thuwal). A total of 460 fungal species belonging to 133 genera, 58 families, 33 orders, 13 classes and 4 phyla was identified across the four sites. The most abundant phylum at all four sites was Ascomycota followed by Basidiomycota. Four phyla (Ascomycota-99.31%, Basidiomycota-0.59%, Chytridiomycota-0.04%, Glomeromycota-0.03%) were detected in Khulais. Except for Glomeromycota, all phyla were detected at Mecca old road (Ascomycota-74.26%, Basidiomycota-25.71%, Chytridiomycota-0.01%) and Thuwal (Ascomycota-99.59%, Basidiomycota-0.40%, Chytridiomycota-0.002%); while only Ascomycota-90.98% and Basidiomycota-9.01% were detected in Asfan road. At the class level, Sordariomycetes was predominantly observed at Asfan road-59.88%, Khulais-68.26% and Thuwal-94.84%; while Pezizomycetes was dominant at Mecca old road-56.01%, was absent at Asfan road. Agaricomycetes was present only at Mecca old road-25.73%; while Tremellomycetes-5.77%, Malasseizomycetes-2.13% and Microbotryomycetes-1.10% were found only at Asfan road. The phylogenetic trees revealed that clear genus level differences are visible across all the four sites, with an overall predominance of Thielavia followed by Madurella, Aspergillus, and Gelasinospora. Chaetomium sp., Aspergillus caespitosus and Aspergillus sp. were found in moderate (Mecca old road and Thuwal) to abundant (Asfan road and Khulais) quantities. Thielavia sp., Thielavia hyalocarpa and Madurella sp. are found in moderate quantities at Khulais and Mecca old road, while in abundant levels at Asfan road and Thuwal. Fusarium equisati and F. oxysporum were detected at Thuwal and Khulais. Sordaria araneosa was present at Khulais, while Malasseiza globosa species was detected in moderate quantities across all sites except Khulais.


Asunto(s)
Hongos/genética , Metagenómica , Microbiología del Suelo , Biodiversidad , Clasificación , Océanos y Mares , Filogenia , Reacción en Cadena de la Polimerasa , Arabia Saudita , Análisis de Secuencia de ADN , Suelo
12.
Saudi J Biol Sci ; 23(3): 397-403, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-27081366

RESUMEN

Fatty acid contents of the Peganum harmala plant as a result of hexane extraction were analyzed using GC-MS. The saturated fatty acid composition of the harmal plant was tetradecanoic, pentadecanoic, tridecanoic, hexadecanoic, heptadecanoic and octadecanoic acids, while the saturated fatty acid derivatives were 12-methyl tetradecanoic, 5,9,13-trimethyl tetradecanoic and 2-methyl octadecanoic acids. The most abundant fatty acid was hexadecanoic with concentration 48.13% followed by octadecanoic with concentration 13.80%. There are four unsaturated fatty acids called (E)-9-dodecenoic, (Z)-9-hexadecenoic, (Z,Z)-9,12-octadecadienoic and (Z,Z,Z)-9,12,15-octadecatrienoic. The most abundant unsaturated fatty acid was (Z,Z,Z)-9,12,15-octadecatrienoic with concentration 14.79% followed by (Z,Z)-9,12-octadecadienoic with concentration 10.61%. Also, there are eight non-fatty acid compounds 1-octadecene, 6,10,14-trimethyl-2-pentadecanone, (E)-15-heptadecenal, oxacyclohexadecan-2 one, 1,2,2,6,8-pentamethyl-7-oxabicyclo[4.3.1]dec-8-en-10-one, hexadecane-1,2-diol, n-heneicosane and eicosan-3-ol.

13.
Genom Data ; 9: 126-7, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27508121

RESUMEN

The data presented contains the sequences of fungal Internal Transcribed Spacer (ITS) and 18S rRNA gene from a metagenome of the Mecca region, Saudi Arabia. Sequences were amplified using fungal specific primers, which amplified the amplicon aligned between the 18S and 28S rRNA genes. A total of 460 fungal species belonging to 133 genera, 58 families, 33 orders, 13 classes and 4 phyla were identified in four contrasting locations. The raw sequencing data used to perform this analysis along with FASTQ file are located in the NCBI Sequence Read Archive (SRA) under accession numbers: SRR3150823, SRR3144873, SRR3150825 and SRR3150846.

14.
Fungal Biol ; 120(2): 207-18, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26781377

RESUMEN

The family Trichomeriaceae (Chaetothyriales) mainly comprises epiphytic and epilithic organisms. In some species elaborate ascomata are formed, but for the great majority the species no asexual conidium formation is known other than simple fragmentation of the thallus. The present paper re-establishes the genus Arthrocladium with three non-sporulating species. One of these is described for a strain causing a fatal infection in a human patient with a rare genetic immune disorder.


Asunto(s)
Ascomicetos/aislamiento & purificación , Micosis/microbiología , Ascomicetos/clasificación , Ascomicetos/genética , Ascomicetos/crecimiento & desarrollo , Microbiología Ambiental , Humanos , Datos de Secuencia Molecular , Filogenia , Esporas Fúngicas/clasificación , Esporas Fúngicas/genética , Esporas Fúngicas/crecimiento & desarrollo , Esporas Fúngicas/aislamiento & purificación , Madera/microbiología
15.
Biomed Res Int ; 2015: 153573, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26581756

RESUMEN

The present study investigated the impact of zinc oxide nanoparticles (ZnONPs) on the oxidative status and sperm characteristics in diabetic rat testicular tissue. Forty male albino rats were used in this study; 10 of them served as a control and 30 rats were injected with a single dose (100 mg/kg) of streptozotocin intraperitoneally. They were subdivided into diabetic, diabetic + ZnONPs (10 mg/kg B.W.), and diabetic and cotreated with ZnONPs + insulin groups. The sperm count and motility were assessed. The activity and mRNA expression of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GRD), and Glutathion-S-Transferase (GST) were determined in the testicular tissue. Malondialdehyde (MDA) and reduced glutathione (GSH) levels were estimated in the testicular tissue. Sperm count and motility increased in ZnONPs treated diabetic rats. A significant increase in the activity and mRNA expression of SOD, CAT, GPx, GRD, and GST was shown in ZnONPs treated diabetic rats. MDA significantly decreased, while GSH increased in testicular tissue of ZnONPs treated diabetic rats. It was concluded that ZnONPs either alone or in combination with insulin have the ability to increase the sperm count and motility and protect the testicular tissue against the oxidative stress induced by diabetes in rats.


Asunto(s)
Antioxidantes/metabolismo , Diabetes Mellitus Experimental/metabolismo , Espermatozoides/metabolismo , Testículo/metabolismo , Animales , Catalasa/metabolismo , Diabetes Mellitus Experimental/enzimología , Diabetes Mellitus Experimental/patología , Glutatión Peroxidasa/metabolismo , Glutatión Reductasa/metabolismo , Glutatión Transferasa/metabolismo , Humanos , Peroxidación de Lípido/efectos de los fármacos , Hígado/efectos de los fármacos , Hígado/enzimología , Masculino , Nanopartículas/administración & dosificación , Nanopartículas/química , Estrés Oxidativo/efectos de los fármacos , Ratas , Espermatozoides/efectos de los fármacos , Espermatozoides/patología , Superóxido Dismutasa/metabolismo , Testículo/efectos de los fármacos , Testículo/patología , Óxido de Zinc/administración & dosificación , Óxido de Zinc/química
16.
Saudi J Biol Sci ; 22(2): 211-9, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25737655

RESUMEN

Watermelon mosaic potyvirus (WMV) is considered as an important virus infecting watermelon and causing adverse effects on crop productivity. To overcome this problem one of the main objectives of plant breeders is to make these strains less effective in the ability to infect plants by treatment with plant extracts. Due to the advantages of plant tissue culture, in vitro, in the process of the selection of different cultivars under biotic stress, this study was conducted to achieve this aim by evaluating the effect of three concentrations of Thuja extract on the multiplication of WMV in watermelon by measuring callus fresh weight and soluble proteins (mg g(-1) fresh weight) of healthy and infected hypocotyl explants. Also, WMV was isolated from naturally infected watermelon and characterized as potyvirus by serological and molecular analyses. The isolated virus gave a positive reaction with WMV antiserum compared with other antibodies of CMV, ZYMV and SqMV using DAS-ELISA. RT-PCR, with the specific primer for WMV-cp. gene, yielded 825 base pair DNA fragments. The results that belong to soluble protein analysis indicated that infected hypocotyl explants treated with 6 g L(-1) recorded the highest rate in the number of soluble protein bands compared with the rest of treatments. As a conclusion of these results, we can recommend to apply the Thuja extract at 6 g L(-1) as a optimum dosage to decrease the infection caused by watermelon mosaic potyvirus.

17.
Saudi Med J ; 35(12): 1501-6, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25491216

RESUMEN

OBJECTIVES: To investigate the mechanisms of the anti-hyperglycemic effect of Costus speciosus (C. speciosus) root ethanolic extracts (CSREt) by assessing its action on insulin synthesis and glucose catabolic enzyme gene expression and activities in streptozotocin (STZ) diabetic rats. METHODS: This study was carried out at the Biochemical Laboratory, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt between July and August 2013. Sixty male albino rats (120 +/- 20 g weight, and 6 months old) were used and divided into 6 groups (n=10). Two groups served as diabetic and nondiabetic controls. Four groups of STZ diabetic animals were given oral C. speciosus (CSREt) in doses of 200, 400, and 600 mg/kg body weight, and 600 µg/kg body weight of the standard drug glibenclamide for 4 weeks. RESULTS: The CSREt 400 and 600 mg/kg body weight induced a decrease in blood glucose and an increase in serum insulin level, glucokinase (GK), aldolase, pyruvate kinase (PK), succinate dehydrogenase (SDH), and glycogen synthase activities  in addition to a higher expression level of insulin, insulin receptor A (IRA), GK, PK, SDH, and glucose transporting protein. CONCLUSION: The C. speciosus has anti-hyperglycemic activity. It induces insulin secretion and release from cells, as well as stimulates the tissue's insulin sensitivity leading to an increase of the tissues' glucose uptake, storage, and oxidation.


Asunto(s)
Glucemia/efectos de los fármacos , Costus , Diabetes Mellitus Experimental/metabolismo , Hipoglucemiantes/farmacología , Extractos Vegetales/farmacología , Raíces de Plantas , ARN Mensajero/efectos de los fármacos , Animales , Glucemia/metabolismo , Diabetes Mellitus Experimental/genética , Fructosa-Bifosfato Aldolasa/efectos de los fármacos , Fructosa-Bifosfato Aldolasa/genética , Fructosa-Bifosfato Aldolasa/metabolismo , Expresión Génica/efectos de los fármacos , Glucoquinasa/efectos de los fármacos , Glucoquinasa/genética , Glucoquinasa/metabolismo , Transportador de Glucosa de Tipo 2 , Glucógeno Sintasa/efectos de los fármacos , Glucógeno Sintasa/genética , Glucógeno Sintasa/metabolismo , Insulina/metabolismo , Piruvato Quinasa/efectos de los fármacos , Piruvato Quinasa/genética , Piruvato Quinasa/metabolismo , ARN Mensajero/metabolismo , Ratas , Receptor de Insulina , Succinato Deshidrogenasa/efectos de los fármacos , Succinato Deshidrogenasa/genética , Succinato Deshidrogenasa/metabolismo
18.
Saudi J Biol Sci ; 20(1): 57-61, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23961220

RESUMEN

Numerous species of soil bacteria which flourish in the rhizosphere of plants or around plant tissues stimulate plant growth and reduce nematode population by antagonistic behavior. These bacteria are collectively known as PGPR (plant growth promoting rhizobacteria). The effects of six isolates of PGPR Pseudomonas putida, Pseudomonas fluorescens, Serratia marcescens, Bacillus amyloliquefaciens, Bacillus subtilis and Bacillus cereus, were studied on tomato plant growth and root knot nematode reproduction after 45 days from nematode infection. The highest number of shoot dry weight/g (43.00 g) was detected in the plant treated with S. marcescens; then P. putida (34.33 g), B. amyloliquefaciens (31.66 g), P. fluorescens (30.0 g), B. subtilis (29.0 g), B. cereus (27.0 g) and nematode alone (untreated) 20 g/plant. While the highest number of plant height was observed when plant was treated with S. marcescens, P. fluorescens, P. putida, B. amyloliquefaciens and P. putida 52.66, 50.66, 48 and 48 cm respectively. No significant differences were seen between previous treatments but only had significant differences compared with untreated plant. The highest number of fruit/plant was observed when plants were treated with S. marcescens (10.66), then B. amyloliquefaciens (8.66), P. putida (8), P. fluorescens (8) and B. cereus (7.66). No significant differences between the last 4 treatments, but all had significant differences compared with untreated plants. The highest weight of plant yield (g) was observed with S. marcescens (319.6 g/plant) and the lowest weight of plant yield was observed in plants treated with nematode alone (untreated). On the other hand, the lowest numbers of J2/10 g of soil (78), galls/root, (24.33) galls/root, egg masses/root (12.66) and egg/egg masses were observed in the plants treated with S. marcescens.

19.
Pharmacogn Mag ; 9(33): 58-66, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23661995

RESUMEN

BACKGROUND: The growth in the production of biodiesel, which is principally fatty acid methyl esters (FAME), has been phenomenal in the last ten years because of the general desire to cut down on the release of greenhouse gases into the atmosphere, and also as a result of the increasing cost of fossil fuels. OBJECTIVE: Establish whether there is any relationship between two different species (watermelon and muskmelon) within the same family (Cucurbitaceae) on fatty acid compositions and enumerate the different fatty acids in the two species. MATERIALS AND METHODS: Extraction of fatty acids from the two species and preparation the extract to gas chromatography/mass spectroscopy analysis to determine the fatty acids compositions qualitatively and quantitatively. RESULTS: The analyzed plants (watermelon and muskmelon) contain five saturated fatty acids; tetrdecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid and octadecanoic acid with different concentrations, while muskmelon contains an extra saturated fatty acid named eicosanoic acid. The watermelon plant contains five unsaturated fatty acids while muskmelon contains three only, the two plants share in two unsaturated fatty acids named 9-hexadecenoic acid and 9-octadecenoic acid, the muskmelon plant contains higher amounts of these two acids (2.04% and 10.12%, respectively) over watermelon plant (0.88% and 0.25%, respectively). CONCLUSION: The chemical analysis of watermelon and muskmelon revealed that they are similar in saturated fatty acids but differ in unsaturated fatty acids which may be a criterion of differentiation between the two plants.

20.
Saudi J Biol Sci ; 19(1): 17-24, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23961157

RESUMEN

The percentage of germination of wild oat was significantly inhibited by increasing the concentrations of phenolic compounds. Ferulic acid was the most effective compound which completely inhibited germination at a concentration of 3.0 mM. At the same time, wheat and barley were slightly affected with different concentrations of the four phenolic compounds. The percentage of germination of wheat significantly decreased with increasing of ferulic acid reaching a maximum inhibition at 3.0 mM concentration. On the other hand, the germination of wheat was not affected with the other three phenolic compounds. The percentage of germination of barley was not affected with all phenolic compounds except for hydroxy phenolic acetic acid which has significant effect at a concentration of 3.0 mM. Salicylic acid significantly inhibited the growth parameters gradually in wild oat, wheat and barley. The shoot/root ratio was decreased in wild oat and barley, while the ratio increased in wheat. The growth parameters were completely inhibited at 3.0 mM of ferulic acid for both wild oat and wheat but slightly inhibited for barley. The shoot/root ratio was increased in all concentrations of ferulic acid except at 3.0 mM which was completely inhibited for both wild oat and wheat, while the ratio was increased in all treatments of ferulic acid in the case of barley. The growth parameters were highly significant and decreased in wild oat, wheat and barley with increasing the concentrations of hydroxybenzoic acid and hydroxyphenyl acetic acid. The shoot/root ratio was not changed in all concentrations except at 3.0 mM in the case of wild oat, the ratio was decreased at 2.0 and 3.0 mM in the case of wheat, while the ratio increased in most of hydroxybenzoic acid concentrations in the case of barley. The shoot/root ratio was increased with increasing of the hydroxyphenyl acetic acid concentrations.

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