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Ibrahim MA, El-Araby R, Abdelkader E, Saied ME, Abdelsalam AM, Ismail EH. Waste cooking oil processing over cobalt aluminate nanoparticles for liquid biofuel hydrocarbons production. Sci Rep 2023; 13:3876. [PMID: 36890178 PMCID: PMC9995329 DOI: 10.1038/s41598-023-30828-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 03/02/2023] [Indexed: 03/10/2023] Open
Abstract
The catalytic conversion of waste cooking oil (WCO) was carried out over a synthetic nano catalyst of cobalt aluminate (CoAl2O4) to produce biofuel range fractions. A precipitation method was used to create a nanoparticle catalyst, which was then examined using field-emission scanning electron microscopy, X-ray diffraction, energy dispersive X-ray, nitrogen adsorption measurements, high-resolution transmission electron Microscopy (HRTEM), infrared spectroscopy, while a gas chromatography-mass spectrometer (GC-MS) was used to analyze the chemical construction of the liquid biofuel. A range of experimental temperatures was looked at including 350, 375, 400, 425, and 450 °C; hydrogen pressure of 50, 2.5, and 5.0 MPa; and liquid hour space velocity (LHSV) of 1, 2.5, and 5 h-1. As temperature, pressure, and liquid hourly space velocity increased, the amount of bio-jet and biodiesel fractional products decreased, while liquid light fraction hydrocarbons increased. 93% optimum conversion of waste cooking oil over CoAl2O4 nano-particles was achieved at 400 °C, 50 bar, and 1 h-1 (LHSV) as 20% yield of bio-jet range,16% gasoline, and 53% biodiesel. According to the product analysis, catalytic hydrocracking of WCO resulted in fuels with chemical and physical characteristics that were on par with those required for fuels derived from petroleum. The study's findings demonstrated the nano cobalt aluminate catalyst's high performance in a catalytic cracking process, which resulted in a WCO to biofuel conversion ratio that was greater than 90%. In this study, we looked at cobalt aluminate nanoparticles as a less complex and expensive alternative to traditional zeolite catalysts for the catalytic cracking process used to produce biofuel and thus can be manufactured locally, which saves the cost of imports for us as a developing country.
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Affiliation(s)
- M A Ibrahim
- Chemistry Department, Ain Shams University Chemistry Faculty of Science, Cairo, Egypt
| | - R El-Araby
- Chemical Engineering and Pilot Plant Department, National Research Centre, Cairo, Egypt.
| | - Elham Abdelkader
- Chemical Engineering and Pilot Plant Department, National Research Centre, Cairo, Egypt
| | | | | | - E H Ismail
- Chemistry Department, Ain Shams University Chemistry Faculty of Science, Cairo, Egypt
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El-Sayed MA, Ibrahim NS, Assi HAEM, El-Gawad MA, Mohammed WS, Ibrahim MA, Mesalam NM, Abdel-Moneim AE. Utilization of Biotechnology, Neurotransmitter and Cytogenetic Indices in Selecting Pigeon Breeds. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2021-1586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - HAEM Assi
- Animal Production Research Institute, Egypt
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Tuan Kob TMS, Ibrahim MA, Khairuddin A, Mohd Razali MS, Abd Razak R, Abd Aziz Z, Hassan NH@J, Ibrahim MA. Clinical Characteristics of COVID-19 between ICU and non-ICU patients. 02.01 - Acute critical care 2022. [DOI: 10.1183/13993003.congress-2022.602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Emam SR, Abd-Elsalam RM, Azouz AA, Ali SE, El Badawy SA, Ibrahim MA, Hassan BB, Issa MY, Elmosalamy SH. Linum usitatissimum seeds oil down-regulates mRNA expression for the steroidogenic acute regulatory protein and Cyp11A1 genes, ameliorating letrezole-induced polycystic ovarian syndrome in a rat model. J Physiol Pharmacol 2021; 72. [PMID: 34099585 DOI: 10.26402/jpp.2021.1.06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/26/2021] [Indexed: 11/03/2022]
Abstract
The safety and effectiveness of nutricetics suggest that they may offer an alternative to pharmaceutical and surgical therapy for hormone-dependent disorders, such as polycystic ovarian syndrome (PCOS). We investigated the effects of Linum usitatissimum seed oil (LSO) on ovarian functionality, its molecular targets, and the oxidative response in hyperandrogenism-induced polycystic ovary. The composition of LSO has been analyzed using ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS). A well-established PCOS rat model orally administered with letrozole daily for 21 days was used to investigate the effect of LSO at doses of 1 and 2 mL/kg body weight for 28 days. The effect on hormonal profile and antioxidant status, histopathology (cell proliferation), and the expression ratio of the steroidogenic acute regulatory protein (StAR) and Cyp11A1 gene were evaluated. LSO exerted beneficial effects on PCOS rat models via restoring glutathione (GSH), malondialdehyde (MDA), beta subunit subunit luteinizing hormone (LH), testosterone levels, and histopathological scoring. Furthermore, LSO reversed the elevated StAR and Cyp11A1 genes in the PCOS rat model. This study demonstrated the molecular and cellular mechanisms of the beneficial effect of LSO against the reproductive and metabolic disorders of PCOS.
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Affiliation(s)
- S R Emam
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - R M Abd-Elsalam
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A A Azouz
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - S E Ali
- Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - S A El Badawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - M A Ibrahim
- Department of Biochemistry, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - B B Hassan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - M Y Issa
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - S H Elmosalamy
- Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Ibrahim MA, Haleem M, AbdelWahab SA, Abdel-Aziz AM. Sildenafil ameliorates Alzheimer disease via the modulation of vascular endothelial growth factor and vascular cell adhesion molecule-1 in rats. Hum Exp Toxicol 2020; 40:596-607. [PMID: 32959702 DOI: 10.1177/0960327120960775] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Alzheimer disease (AD) is a chronic neurodegenerative disease with multi-pathways pathogenesis. Sildenafil is a selective phosphodiesterase-5 inhibitor with a potential benefit in the treatment of AD. This study investigated the possible mechanisms underlying the effect of sildenafil in AD with emphasis on vascular endothelial growth factor (VEGF), and vascular cell adhesion molecule-1 (VCAM-1). Twenty-four adult male rats were classified into four groups; control group: received vehicles, sildenafil-control: received sildenafil (15 mg/kg/day, p.o.), AD group received Aluminum (25 mg/kg/day, p.o.), AD-treated group: received sildenafil (15 mg/kg/day, p.o.) for 6 weeks. AD was assessed by memory performance test and confirmed by histopathological examination and immunostaining of, neurogenesis marker nestin and α-synuclein. The levels of VEGF-A, VCAM-1, oxidative stress markers and TNF-α in brain tissue were evaluated. AD rats showed histopathological evidences of AD; along with increased latency time in the memory test. There was a decrease in VEGF-A, and an increase in VCAM-1, TNF-α, and oxidative stress markers. Immunohistochemical study showed a significant increase in α-synuclein and a significant decrease in nestin expressions in brain tissues. Sildenafil administration ameliorated the histopathological changes and decreased latency time. Such effect was associated with a decrease in VCAM-1, TNF-α and oxidative stress as well as an increase in VEGF-A. Sildenafil caused a significant increase in nestin and a decrease in α-synuclein immunostaining. These findings suggested a protective effect of sildenafil via modulation of VEGF-A, and VCAM-1.
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Affiliation(s)
- M A Ibrahim
- Department of Pharmacology, 68877Faculty of Medicine, Minia University, Minia, Egypt
| | - Masa Haleem
- Department of Anatomy, 68877Faculty of Medicine, Minia University, Minia, Egypt
| | - S A AbdelWahab
- Department of Histology, 68877Faculty of Medicine, Minia University, Minia, Egypt.,Department of Basic Medical Science, Deraya University, New Minia, Egypt
| | - A M Abdel-Aziz
- Department of Pharmacology, 68877Faculty of Medicine, Minia University, Minia, Egypt
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Ali TE, Assiri MA, Ibrahim MA, Yahia IS. Nucleophilic Reactivity of a Novel 3-Chloro-3-(4,9-dimethoxy5-oxo-5H-furo[3,2-g]chromen-6-yl)prop-2-enal. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020050188] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Refaat A, Ibrahim MA, Elhaes H, Badry R, Ezzat H, Yahia IS, Zahran HY, Shkir M. Geometrical, vibrational and physical properties of polyvinyl chloride nanocomposites: Molecular modeling approach. J Theor Comput Chem 2020. [DOI: 10.1142/s0219633619500378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
B3LYP/6-31G([Formula: see text], [Formula: see text]) quantum mechanical calculations were conducted to study polyvinyl chloride (PVC) and PVC with metal oxides (ZnO and CuO). Accordingly, model molecules for PVC; PVC/[Formula: see text]ZnO; PVC/[Formula: see text]CuO and PVC/[Formula: see text]ZnO/[Formula: see text]CuO, where [Formula: see text] and [Formula: see text], 2 and 3, were proposed. The calculated results of total dipole moment (TDM), HOMO–LUMO energy band gap, and molecular electrostatic potentials (ESPs) indicated that the conductivity of PVC is increased and its surface became more reactive due to interaction with metal oxides. The effect of hydration on PVC was also studied at the same level of theory in order to assess the effect of up to 23 water molecules on PVC. The TDM value of PVC is increased but HOMO/LUMO band gap energy value is decreased because of hydration. Moreover, the results of calculated ESP indicated that the reactivity in the presence of water molecules increased, which could indicate possible degradation of PVC. Additionally, some geometrical parameters were studied. Furthermore, the scaled infrared spectrum (IR) for PVC was also calculated at B3LYP/6-31G ([Formula: see text], [Formula: see text]) and indicated that there are two bands at 2990[Formula: see text]cm[Formula: see text] and 2975[Formula: see text]cm[Formula: see text] in comparison with Fourier transform infrared spectrum (FTIR).
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Affiliation(s)
- A. Refaat
- Spectroscopy Department, National Research Centre, 33 El-Bohouth Str. 12622 Dokki, Giza, Egypt
| | - M. A. Ibrahim
- Spectroscopy Department, National Research Centre, 33 El-Bohouth Str. 12622 Dokki, Giza, Egypt
| | - H. Elhaes
- Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, 11757 Cairo, Egypt
| | - R. Badry
- Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, 11757 Cairo, Egypt
| | - H. Ezzat
- National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt
| | - I. S. Yahia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
- Advanced Functional Materials & Optoelectronics Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical, Lab. 2 Physics Department, Faculty of Education, Ain Shams University, Roxy, 11757 Cairo, Egypt
| | - H. Y. Zahran
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
- Advanced Functional Materials & Optoelectronics Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical, Lab. 2 Physics Department, Faculty of Education, Ain Shams University, Roxy, 11757 Cairo, Egypt
| | - Mohd. Shkir
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, P.O. Box 9004, Saudi Arabia
- Advanced Functional Materials & Optoelectronics Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
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Rohaizar MH, Sepeai S, Surhada N, Ludin NA, Ibrahim MA, Sopian K, Zaidi SH. Light transmission and internal scattering in pulsed laser-etched partially-transparent silicon wafers. Heliyon 2019; 5:e02790. [PMID: 31768436 PMCID: PMC6872776 DOI: 10.1016/j.heliyon.2019.e02790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 07/04/2019] [Accepted: 10/31/2019] [Indexed: 11/24/2022] Open
Abstract
Continuing trend in silicon wafer thickness directed at cost reduction approaches basic boundaries created by: (a) mismatch between Al paste and Si wafer thermal expansion and (b) incomplete optical absorption. With its symmetrical front and back electrical contacts, the bifacial solar cell setup reduces stress due to mismatch thermal expansion, decreases metal use and increases high temperature efficiency. Efficiency improvement is accomplished in bifacial solar cells by capturing light from the back surface. Partially transparent wafers provide an option to improve near-infrared radiation absorption within Si wafer. To fully absorb optical radiation, three-dimensional texture of these kinds of wafers is essential. Pulsed laser interactions, thermal oxidation, and wet chemical etching are included in this research. A feature of its energy and pattern setup is the interaction of pulsed laser with Si, running at 1.064 μm wavelength and micro-second length. Two experimental settings were explored: (a) post-laser chemical etching with potassium hydro-oxide etching with thermal oxide as etching mask and (b) post-laser heat Si surface oxidation. Due to fast melting and recrystallization, laser pulsed processing inherently produces its own texture. Some of these spherically-shaped, randomly focused characteristics improve inner scattering and boost near-infrared absorption within the wafer. These characteristics are separated during chemical etching with the thermally-grown oxide layer as an etch mask. Comparison of optical absorption in both surfaces shows almost a rise in the magnitude of absorption in non-etched surfaces. Detailed optical (optical microscope and IR absorption), morphological (field emission scanning electron microscope) and heat imaging (far IR camera) analyses were performed to comprehend physical processes that contribute to near-IR absorption improvement. Such kinds of partially-transparent, three-dimensional textured Si wafers are anticipated to discover applications for bifacial solar cells as substrates.
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Affiliation(s)
- Muhd Hatim Rohaizar
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Suhaila Sepeai
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Nurfarizza Surhada
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - N A Ludin
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - M A Ibrahim
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - K Sopian
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Saleem H Zaidi
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
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Rahman ABA, Sarjadi MS, Alias A, Ibrahim MA. Fabrication of Stannate Perovskite Structure as Optoelectronics Material: An Overview. J Phys : Conf Ser 2019; 1358:012043. [DOI: 10.1088/1742-6596/1358/1/012043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
This paper presents a review of recent fabrication progress of perovskite-type material suited for the future optoelectronics applications. Wide varieties of optoelectronic devices include solar cell, liquid displays, transparent FETs, etc are becoming the mainstream for the future electronics global industry. In June 2015, the major breakthrough of perovskite structure in solar energy harvesting with PCE of 20.1% has achieved. Since then, numerous research has been conducted progressively to further enhance the performance of the perovskite structure as new alternative materials for optoelectronics applications. The perovskite-type oxide is having typical ABO3 crystallized structure. It is one of an important class of materials that have many exceptional physical properties such as superconductivity, colossal magnetoresistance, ferromagnetic, piezoelectric, high-transition-temperature superconductivity, ferroelectricity, piezoelectricity, and photoelectrochemical sensitivity. In this paper, we reviewed development progress one of the major classes of perovskite-type materials namely Stannate-based. Calculated data from simulation results such as DFT and first principle were excluded and only fabricated devices are covered in this paper.
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Mohamed MZ, Hafez HM, Hassan M, Ibrahim MA. PI3K/Akt and Nrf2/HO-1 pathways involved in the hepatoprotective effect of verapamil against thioacetamide toxicity in rats. Hum Exp Toxicol 2018; 38:381-388. [PMID: 30526075 DOI: 10.1177/0960327118817099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Liver is a precious organ to maintain body life. Hepatotoxicity is a worldwide health problem that is still a challenge for research. Although countless pharmaceutical drugs and herbal compounds were screened for their hepatoprotective effects, the death from hepatotoxicity is increasing. Thus, there is continuous necessity of searching for the hepatoprotective effect of commonly used drugs. Accordingly, our aim was to examine a hepatoprotective potential for the antihypertensive drug, verapamil, and searching for new insights underlie its protective mechanism. Four groups of adult male rats were randomly arranged as controls, thioacetamide (TAA) hepatotoxic, and TAA + verapamil treated. Serum liver enzyme, hepatic antioxidant, lipid peroxidation, and inflammatory parameters were assessed. Gene relative expression for heme oxygenase-1 (HO-1), nuclear factor-erythroid 2-related factor 2 (Nrf2), phosphoinositide 3-kinase (PI3K), and serine/threonine-specific protein kinase (Akt) were quantified in hepatic tissue. TAA caused hepatic injury evident both histopathologically and biochemically by a decrease in all gene expressions. Verapamil alleviated the injury via its antioxidant and anti-inflammatory effects that were suggested to be via upregulation of the previous gene expressions. In conclusion, the calcium channel blocker, verapamil, that is used widely as antihypertensive exhibits a valuable hepatoprotective effect. The protection partially rests on activation of Nrf2/HO-1 and PI3K/Akt pathways.
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Affiliation(s)
- M Z Mohamed
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt
| | - H M Hafez
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt
| | - M Hassan
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt
| | - M A Ibrahim
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt
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Khalaf AA, Ahmed WMS, Moselhy WA, Abdel-Halim BR, Ibrahim MA. Protective effects of selenium and nano-selenium on bisphenol-induced reproductive toxicity in male rats. Hum Exp Toxicol 2018; 38:398-408. [DOI: 10.1177/0960327118816134] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bisphenol A (BPA) is a widespread compound associated with the manufacture of many consumer products. The BPA-induced reproductive toxicity was reported to be mainly attributed to oxidative stress. However, the role of antioxidants usage to decrease the injurious effects of BPA, on male reproductive functions, remains to unveil. The present research is established to evaluate the role of selenium (Se) and its nano form (NSe) as protective agents to alleviate BPA-induced testicular toxicity. Ninety mature albino male rats were assigned into six equal groups: negative control; orally BPA 150 mg/kg; Se 3 mg/kg; NSe 2 mg/kg; both BPA 150 mg/kg and Se 3 mg/kg; and BPA 150 mg/kg + NSe 2 mg/kg. The experiment lasted for 70 consecutive days, and then serum was collected for estimation of prostatic acid phosphatase. Testicular tissues were subjected to measurement of antioxidant status, lipid peroxidation, DNA damage, and expression of some apoptotic genes. Our results reported that BPA-induced marked testicular damage evidenced by significant elevations in serum prostatic acid phosphatase activity, malondialdehyde levels, a decrease in testicular catalase activity and reduced glutathione level. Moreover, marked DNA internucleosomal fragmentation pattern as well as upregulation of cyclooxygenase-2 and estrogen receptor-2 NSe genes were detected. Coadministration of Se and NSe attenuated the reproductive toxicity induced by BPA via improvement of the antioxidant activity, genetic changes, and restoration of testicular tissue nearly as control one. These results indicated that both Se and NSe forms could be used as reproductive protective agents against the detrimental effect induced by BPA. However, the NSe surpassed the selenium in modulating the DNA laddering, and the studied gene expression levels, and offered a potent reproductive protection.
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Affiliation(s)
- AA Khalaf
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - WMS Ahmed
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - WA Moselhy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - BR Abdel-Halim
- Department of Theriogenology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - MA Ibrahim
- Department of Biochemistry, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Mohd FA, Abdul Maulud KN, Abd Rahman AA, Ibrahim MA, Awang NA, Abd Rahim NA, Abd Razak AH. Evaluation and verification of numerical modelling of nearshore changes due to waves and currents parameter in Carey Island, Malaysia. IOP Conf Ser : Earth Environ Sci 2018; 169:012054. [DOI: 10.1088/1755-1315/169/1/012054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Muhammad A, Ibrahim MA, Mohammed HA, Erukainure OL, Malami I, Suleiman A, Mansir A, Godwin A, Khalil HA. Response to the letter to the editor on the article 'Alteration of redox status by commonly used antimalarial drugs in the north-western region of Nigeria' by Karolina et al. Hum Exp Toxicol 2018; 37:1117-1119. [PMID: 29560745 DOI: 10.1177/0960327118765320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- A Muhammad
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - M A Ibrahim
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - H A Mohammed
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - O L Erukainure
- 2 Department of Food Technology, Federal Institute of Industrial Research, Oshodi, Nigeria
| | - I Malami
- 3 Department of Pharmacognosy and Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - A Suleiman
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - A Mansir
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - A Godwin
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - H A Khalil
- 1 Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
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Hegazy MA, Elhaes H, El-Khodary SA, Morsy M, Yahia IS, Zahran HY, AlFaify S, Ibrahim MA. Molecular Modeling Analyses for ZnO/Graphene as Sensor for H2S. ACTA ACUST UNITED AC 2018. [DOI: 10.1166/sl.2018.3911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gijbels I, Ibrahim MA, Verhasselt A. Shape testing in quantile varying coefficient models with heteroscedastic error. J Nonparametr Stat 2017. [DOI: 10.1080/10485252.2017.1303066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- I. Gijbels
- Department of Mathematics and Leuven Statistics Research Center (LStat), KU Leuven, Belgium
| | - M. A. Ibrahim
- Universiteit Hasselt, I-Biostat, Diepenbeek, Belgium
| | - A. Verhasselt
- Universiteit Hasselt, I-Biostat, Diepenbeek, Belgium
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Khalaf AA, Zaki AR, Galal MK, Ogaly HA, Ibrahim MA, Hassan A. The potential protective effect of α-lipoic acid against nanocopper particle-induced hepatotoxicity in male rats. Hum Exp Toxicol 2016; 36:881-891. [PMID: 27827802 DOI: 10.1177/0960327116674526] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The present research task is aimed to evaluate the role of exogenous α-lipoic acid (ALA) (100 mg/kg body weight) as hepatoprotective and potent antioxidant in amelioration of copper nanoparticle (CNP)-induced hepatotoxicity. Forty male rats were randomly assigned into four equal groups: group I (control), group II received CNPs, group III received CNPs + ALA, and finally group IV received ALA for 2 months. At the end of the experimental period, the rats were decapitated, and blood and liver tissue samples were collected for measurement of liver function tests, antioxidant status, lipid peroxidation (LPO), copper content, expression of some apoptotic genes, and histopathological analysis. CNPs induced marked hepatic damages as evident by severe alteration in hepatic biomarkers. This was accompanied by a significant elevation in hepatic LPO and induced nitric oxide, copper content, and expression level of apoptotic genes (C-myc and C-jun). In contrast, marked depletion for antioxidant parameters was detected. These findings were confirmed with severe pathological alterations. Coadministration of ALA as a powerful antioxidant attenuates the hepatotoxic effects of CNPs through improvement of liver parameters, oxidative status, genetic changes, and preservation of liver integrity through histopathological analysis. These results suggest that consumed ALA could be used as an applicable hepatoprotective agent against oxidative damage mediated by nanoparticles intoxication.
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Affiliation(s)
- A A Khalaf
- 1 Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A R Zaki
- 2 Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Beni-Suef University, Beni Suef Governorate, Egypt
| | - M K Galal
- 3 Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - H A Ogaly
- 3 Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - M A Ibrahim
- 3 Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A Hassan
- 4 Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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17
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Muhammad A, Ibrahim MA, Mohammed HA, Erukainure OL, Malami I, Suleiman A, Mansir A, Godwin A, Khalil HA. Alteration of redox status by commonly used antimalarial drugs in the north-western region of Nigeria. Hum Exp Toxicol 2016; 36:176-183. [DOI: 10.1177/0960327116641735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study was designed to investigate the alteration of redox status by commonly used antimalarials in Nigeria. Drugs used were artemisinin, artesunate, chloroquine, coartem and quinine at the final concentrations of 0.5–8.0 mg/mL. Blood samples were collected from malarial patients and apparently healthy humans for comparison. Reduced glutathione, catalase, superoxide dismutase (SOD) activities, protein content and lipid peroxidation were determined. All drugs significantly ( p < 0.05) increases the protein level relative to control in normal blood, whereas in the infected, a significant ( p < 0.05) reduction was observed. In normal blood, the antimalarials dose dependently decreased ( p < 0.05) SOD and catalase activities with significant ( p < 0.05) increase in the infected. The level of glutathione in normal blood significantly ( p < 0.05) increases as compared with control, whereas in the infected, similar observation was made except that the levels were less, relative to control sample. Malondialdehyde level significantly ( p < 0.05) increases with increase in drugs concentration even though less than the level in the control with few exceptions. These effects were dose dependent and more pronounced in non-malarial conditions. Commonly used antimalarials might alter the redox status in both healthy and non-healthy subjects thereby inducing oxidative stress.
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Affiliation(s)
- A Muhammad
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - MA Ibrahim
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - HA Mohammed
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - OL Erukainure
- Department of Food Technology, Federal Institute of Industrial Research, Oshodi, Nigeria
| | - I Malami
- Department of Pharmacognosy and Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - A Suleiman
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - A Mansir
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - A Godwin
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
| | - HA Khalil
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
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18
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Ibrahim MA, Mohamed MM, Ghazy AM, El-Mogy M, Masoud HMM. Purification and characterization of two glutathione peroxidases from embryo of the camel tick Hyalomma dromedarii. Russ J Bioorg Chem 2016. [DOI: 10.1134/s1068162016030092] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Khoo LS, Hasmi AH, Abdul Ghani Aziz SA, Ibrahim MA, Mahmood MS. MH17: the Malaysian experience. Malays J Pathol 2016; 38:1-10. [PMID: 27126658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A disaster is a natural or man-made (or technological) hazard resulting in an event of substantial extent causing significant physical damage or destruction, loss of life, or drastic change to the environment. It is a phenomenon that can cause damage to life and property and destroy the economic, social and cultural life of the people; and overwhelms the capacity of the community to cope with the event. The recent tragic aviation accidents in 2014 involving Malaysia Airlines flights MH370 and MH17 shocked the world in an unprecedented manner. This paper focuses on the Malaysian experience in the MH17 mission in Ukraine as well as the first ever international Disaster Victim Identification (DVI) operation for the Malaysian DVI team. The DVI operations in Hilversum, the Netherlands were well described in stages. The Netherlands' Landelijk Team Forensische Opsporing as the lead DVI team in Hilversum operated systematically, ensuring the success of the whole mission. This paper discusses the lessons learned by the Malaysian team on proper DVI structure, inter- and intra-agency cooperation, facilities planning and set up, logistics and health and safety aspects, as well as effective communication and collaboration with other international delegates. Several issues and challenges faced by the Malaysian team were also documented. In addition, the authors shared views, opinions and recommendations for a more comprehensive DVI operation in the future.
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Affiliation(s)
- L S Khoo
- National Institute of Forensic Medicine, Hospital Kuala Lumpur, Jalan Pahang, 50586 Kuala Lumpur, Malaysia.
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20
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Fouad EA, Ibrahim MA, El-Badry M. Embedment of Chlorpheniramine Maleate in Directly Compressed Matrix Tablets of Compritol and Kollidone SR. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i3.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Ibrahim MA, Shazly GA, El-Badry M. Albendazole Microparticles Prepared by Spray Drying Technique: Improvement of Drug Dissolution. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v13i12.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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22
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Ebadi M, Mat-Teridi MA, Sulaiman MY, Basirun WJ, Asim N, Ludin NA, Ibrahim MA, Sopian K. Electrodeposited p-type Co3O4 with high photoelectrochemical performance in aqueous medium. RSC Adv 2015. [DOI: 10.1039/c5ra04008f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Electrofabricated p-Co3O4 based electrodes have shown efficient photoelectrochemical performance at low bias potentials in aqueous medium (∼6.5 mA cm−2vs. SCE at −0.3 V).
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Affiliation(s)
- M. Ebadi
- Department of Chemistry
- Faculty of Science
- Islamic Azad University-Gorgan Branch
- Gorgan
- Iran
| | - M. A. Mat-Teridi
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
| | - M. Y. Sulaiman
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
| | - W. J. Basirun
- Department of Chemistry
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - N. Asim
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
| | - N. A. Ludin
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
| | - M. A. Ibrahim
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
| | - K. Sopian
- Solar Energy Research Institute
- University Kebangsaan Malaysia
- Bangi
- Malaysia
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Zahari Z, Lee CS, Ibrahim MA, Musa N, Yasin MAM, Tan SC, Mohamad N, Ismail R. P-38 * NO INFLUENCE OF OPIOID RECEPTOR, MU 1 (OPRM1) GENE POLYMORPHISMS ON PAIN SENSITIVITY AMONG OPIOID DEPENDENT PATIENTS ON METHADONE MAINTENANCE THERAPY (MMT) IN MALAYSIA. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu054.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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24
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Moradi A, Sepah YJ, Ibrahim MA, Sophie R, Moazez C, Bittencourt MG, Annam RE, Hanout M, Liu H, Ferraz D, Do DV, Nguyen QD. Association of retinal vessel calibre and visual outcome in eyes with diabetic macular oedema treated with ranibizumab. Eye (Lond) 2014; 28:1315-20. [PMID: 25145456 DOI: 10.1038/eye.2014.186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 06/26/2014] [Indexed: 11/09/2022] Open
Abstract
PURPOSE The study aims to identify the association between the baseline retinal vascular calibre and visual outcome of patients with diabetic macular oedema (DMO) treated with intravitreal ranibizumab. METHODS The 1-M field (as defined in the ETDRS study) of the digital colour fundus photographs of DMO patients who had been treated primarily with ranibizumab in a clinical trial was assessed. Of the 84 patients, 25 had gradable retinal photographs that could be subjected to analyses by the Interactive Vessel Analysis (IVAN) software at baseline. The average retinal vascular calibre of the six largest venules (CRVE) and the six largest arterioles (CRAE) in the peripapillary area (0.5 and 1 disc diameter from the optic disc margin) was measured. The relationship between CRVE and CRAE at baseline and the change in visual acuity at month 12 was assessed using the Mann-Whitney U test. RESULTS Ten eyes from 10 patients who had shown an improvement of ≥2 lines of best corrected visual acuity (BCVA) at month 12 had a wider baseline CRVE (248.3±24.5 μm) compared with the 15 eyes from 15 patients who did not show the improvement of ≥2 lines (226.6±44.8 μm, P<0.05). The baseline CRAE did not differ significantly in these patients (156.1±22.7 vs 142±17.5 μm, P=0.17). CONCLUSIONS A wider baseline retinal venular calibre may be a predictor of better visual outcome in DMO eyes treated with ranibizumab. Further prospective studies with a larger sample size and a broader range of disease severity and visual acuity are needed to confirm this finding.
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Affiliation(s)
- A Moradi
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Y J Sepah
- 1] Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA [2] Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
| | - M A Ibrahim
- 1] Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA [2] Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
| | - R Sophie
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - C Moazez
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M G Bittencourt
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - R E Annam
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Hanout
- 1] Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA [2] Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
| | - H Liu
- Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D Ferraz
- 1] Retinal Imaging Research and Reading Centre, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA [2] Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
| | - D V Do
- Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
| | - Q D Nguyen
- Ocular Imaging Research and Reading Centre, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Centre, Omaha, NE, USA
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25
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Habila N, Muhammad A, Aimola IA, Chechet GD, Ibrahim MA, Kwanashie JA, Oche OE, Odunola AO. Trypanosoma brucei brucei infected rats: micronucleated polychromatic erythrocytes. Trop Biomed 2014; 31:312-319. [PMID: 25134900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The emergence of bone marrow micronucleated polychromatic erythrocytes (MN-PCE) in rats experimentally infected with Trypanosoma brucei brucei was examined in order to understand the bone marrow effects in trypanosomiasis infection. Bone marrow was collected for micronucleus assay while blood samples were collected from infected rat for hematological analysis. The results showed evidence of MN-PCE at 12.75 ± 0.65 micronuclei/ 1000 PCE and 9.60 ± 2.95 micronuclei/1000 PCE for rats infected for 21 days and 14 days respectively. The hematology examination revealed changes in packed cell volume, haemoglobin and red blood cells with concomitant increase in parasitemia. This study revealed that the generation of MN-PCE was induced by an acute infection of T. b. brucei in rats and this highlights an important phase in the pathogenesis of the disease that may indicate possible damage to genetic information.
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Affiliation(s)
- N Habila
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - A Muhammad
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - I A Aimola
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - G D Chechet
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - M A Ibrahim
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - J A Kwanashie
- Department of Crop Protection, Ahmadu Bello University, Zaria-Nigeria
| | - O E Oche
- Department of Biochemistry, Ahmadu Bello University, Zaria-Nigeria
| | - A O Odunola
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Oyo State, Nigeria
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26
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Radwan IA, Abed AH, Abeer MR, Ibrahim MA, Abdallah AS. Effect of Thyme, Clove and Cinnamon Essential Oils on Candida Albicans and Moulds Isolated from Different Sources. ACTA ACUST UNITED AC 2014. [DOI: 10.3844/ajavsp.2014.303.314] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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Megahed AA, El-Dougdoug KA, Othman BA, Lashin SM, Ibrahim MA, Sofy AR. Induction of resistance in tomato plants against tomato mosaic tobamovirus using beneficial microbial isolates. Pak J Biol Sci 2014; 16:385-90. [PMID: 24494520 DOI: 10.3923/pjbs.2013.385.390] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The possibility of making use of the phenome non of Systemic Acquired Resistance (SAR) to control viruses achieved by the soaking treatment of tomato seeds cv. Castl Rock with three growth forms to Bacillus circulans, Pseudomonas fluorescens 2 and Trichoderma harzianum against Tomato mosaic tobamovirus (ToMV) infection. All the application forms of beneficial biotic inducers were reduced the mean number of ToMV local lesions on Datura metel. P. fluorescens 2 was found to be the best treatment in three forms on reduction of local lesion number 42.2, 32.7 and 38.1 of microbial liquid culture, microbial cells or spores and microbial culture filtrate forms, respectively, while the highest mean numbers of local lesions were 51.5, 61.7 and 73.5 of microbial liquid culture, microbial cells or spores and microbial culture filtrate, respectively for T. harzianum. The microbial culture filtrate form was more effective than other microbial forms to reduce mean number of ToMV local lesions to B. circulans, P. fluorescens 2 and T. harzianum isolates, 40.7, 32.1 and 51.5, respectively. The individual microbial isolates on all three microbial forms able to vary ToMV local lesions similarity (homologous or heterologous) and morphology (size center and surrounded with halo or without halo) compared with TMV mother strain.
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Affiliation(s)
- A A Megahed
- Department of Plant pathology, National Research Centre, Dokki, Cairo, Egypt
| | - Kh A El-Dougdoug
- Department of Agriculture Microbiology, Faculty of Agriculture, Ain Shams University, Shoubra EL-Kheima, Cairo, Egypt
| | - B A Othman
- Department of Agriculture Microbiology, Faculty of Agriculture, Ain Shams University, Shoubra EL-Kheima, Cairo, Egypt
| | - S M Lashin
- Department of Plant pathology, National Research Centre, Dokki, Cairo, Egypt
| | - M A Ibrahim
- Department of Molecular Biology, Genetic Engineering and Biotechnology Division, National Research Centre, Dokki, Cairo, Egypt
| | - A R Sofy
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, 11884 Nasr City, Cairo, Egypt
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Shebl M, Ibrahim MA, Khalil SME, Stefan SL, Habib H. Binary and ternary copper(II) complexes of a tridentate ONS ligand derived from 2-aminochromone-3 carboxaldehyde and thiosemicarbazide: synthesis, spectral studies and antimicrobial activity. Spectrochim Acta A Mol Biomol Spectrosc 2013; 115:399-408. [PMID: 23860404 DOI: 10.1016/j.saa.2013.06.075] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 06/12/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Abstract
A tridentate ONS donor ligand, HL, was synthesized by the condensation of 2-aminochromone-3-carboxaldehyde with thiosemicarbazide. The structure of the ligand was elucidated by elemental analyses, IR, (1)H and (13)C NMR, electronic and mass spectra. Reaction of the ligand with several copper(II) salts, including AcO(-), NO3(-), SO4(2-), Cl(-), Br(-) and ClO4(-) afforded different metal complexes that reflect the non-coordinating or weakly coordinating power of the ClO4(-) and Br(-) anions as compared to the strongly coordinating power of AcO(-), SO4(2-), Cl(-) and NO3(-) anions. Also, the ligand was allowed to react with Cu(II) ion in the presence of a secondary ligand (L') [N,O-donor; 8-hydroxyquinoline or N,N-donor; 1,10-phenanthroline]. Characterization and structure elucidation of the prepared complexes were achieved by elemental and thermal analyses, IR, electronic, mass and EPR spectra as well as conductivity and magnetic susceptibility measurements. The EPR spin Hamiltonian parameters of some complexes were calculated. The metal complexes exhibited octahedral and square planar geometrical arrangements depending on the nature of the anion. The ligand and most of its metal complexes showed antibacterial activity towards Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Salmonella typhimurium and Escherichia coli), yeast (Candida albicans) and fungus (Aspergillus fumigatus).
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Affiliation(s)
- Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
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30
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Tayem YI, Ibrahim MA, Qubaja MM, Shraim RK, Taha OB, Abu Shkhedem E. Compliance with the guidelines of prescription writing in a central hospital in the West Bank. East Mediterr Health J 2013; 19:802-806. [PMID: 24313042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This retrospective, cross-sectional study was carried out to evaluate the quality of 2208 outpatient prescriptions in a central hospital in the West Bank, Palestine. The physicians' handwriting was poorly readable or illegible in one-third of the prescriptions. The prescriber's name and signature and patient's name were mentioned in almost all orders whereas the patient's age was stated in 54.9%. The vast majority of physicians (95.5%) prescribed drugs using their trade (brand) names. Drug strength, quantity and dose/frequency were stated in 61.1%, 76% and 73.8% of prescriptions respectively. Only 33 prescriptions (1.5%) contained full directions for use for all drugs. Correlation analysis revealed that the presence of certain prescription elements was statistically significantly associated with the clinic of origin and the number of drugs prescribed. The overall poor legibility and incompleteness of the prescriptions is of concern.
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Affiliation(s)
- Y I Tayem
- Faculty of Medicine, Al-Quds University, Abu Dis, West Bank, Palestine.
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31
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Ibrahim MA, Koorbanally NA, Islam MS. In vitro anti-oxidative activities of the various parts of Parkia biglobosa and GC-MS analysis of extracts with high activity. Afr J Tradit Complement Altern Med 2013; 10:283-291. [PMID: 24311837 PMCID: PMC3847417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The anti-oxidative activities of sequentially extracted solvent fractions of different parts of P. biglobosa were evaluated in a series of in vitro assays. Our findings indicated that all extracts had electron donating and free radical scavenging activities. But the ethanol (EtOH) extracts from all the parts demonstrated more promising anti-oxidative effects in these experimental models. Apart from the aqueous extracts of the stem bark and leaves, all other extracts exhibited hydroxyl radical scavenging (HRS) activity but the ethyl acetate (EtOAc) extract of the stem bark and EtOH extracts of the root and leaves possessed more powerful HRS activity than other corresponding extracts in the parts. Further, nitric oxide (NO) inhibition activities were observed in all the extracts except the EtOAc extract of the stem bark which showed pro-oxidative activity. However, the EtOH extract of the stem bark and root as well as the EtOAc extract of the leaves displayed more potent anti-NO activity than other extracts in the parts. The GC-MS analysis of the EtOH extracts revealed that the most abundant phytochemicals are pyrogallol derivatives. Data from this study suggest that the EtOH extracts from different parts of P. biglobosa contained potent anti-oxidative agents and pyrogallol could be the main bioactive constituent.
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Affiliation(s)
- M A Ibrahim
- School of Life Sciences, University of KwaZulu-Natal (Westville Campus), Durban, 4000, South Africa
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Nadium WK, Abdelwahab HH, Ibrahim MA, Shigidi MM. Histological pattern of primary glomerular diseases among adult Sudanese patients: A single center experience. Indian J Nephrol 2013; 23:176-9. [PMID: 23814414 PMCID: PMC3692141 DOI: 10.4103/0971-4065.111838] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
In Sudan, like most developing countries, the incidence and histologic patterns of primary glomerulonephritis (GN) remains undetermined. A cross-sectional hospital-based prospective study was performed to determine the pattern of primary GN among adult Sudanese patients. The study was conducted at Khartoum Teaching Hospital from September 2010 to August 2011. It included all adult patients with suspected primary glomerular disease and who underwent native kidney biopsy. A total of 83 adult patients were biopsied with 71 patients (85.5%) being diagnosed as having primary GN. Among those with primary GN the mean age was 34.6 ± 18 years and males represent 54.9%. In 46.5% kidney biopsy was indicated by the presence of nephrotic syndrome, whereas in 33.8% biopsies were performed due to unexplained elevations in renal parameters. Primary focal segmental glomerulosclerosis (FSGS) was diagnosed in 29.6% of patients, followed by membrano-proliferative glomerulonephritis (MPGN) in 26.8% and minimal change disease in 16.9%. IgA nephropathy was observed in 5.6%. Complications following kidney biopsies were reported in 9.6% of biopsied patients. Nephrotic syndrome in an adult was the most common indication for kidney biopsy in our unit. A large number of patients were biopsied due to elevated renal parameters, which reflected the increasing awareness toward thoroughly diagnosing patients with suspected reversible kidney damage. In conclusion, FSGS and MPGN make the most common causes of primary GN among Sudanese adults. Creation of a national renal registry is essential for obtaining more specified epidemiological data.
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Affiliation(s)
- W K Nadium
- Department of Medicine, Renal Unit, Khartoum Teaching Hospital, Khartoum, Sudan
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Abdel-Megid M, Ibrahim MA, Gabr Y, El-Gohary NM, Mohamed EA. Synthesis of Some New Nitrogen Bridge-head Triazolopyridines, Pyridotriazines, and Pyridotriazepines Incorporating 6-Methylchromone Moiety. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1608] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- M. Abdel-Megid
- Department of Chemistry, Faculty of Education; Ain Shams University; Roxy; 11711; Cairo; Egypt
| | - M. A. Ibrahim
- Department of Chemistry, Faculty of Education; Ain Shams University; Roxy; 11711; Cairo; Egypt
| | - Y. Gabr
- Department of Chemistry, Faculty of Education; Ain Shams University; Roxy; 11711; Cairo; Egypt
| | - N. M. El-Gohary
- Department of Chemistry, Faculty of Education; Ain Shams University; Roxy; 11711; Cairo; Egypt
| | - E. A. Mohamed
- Department of Chemistry, Faculty of Education; Ain Shams University; Roxy; 11711; Cairo; Egypt
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Khater HA, El-Morshdy SED, Ibrahim MA. Thermal-hydraulic modeling of the onset of flow instability in MTR reactors. KERNTECHNIK 2013. [DOI: 10.3139/124.100303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Prediction of the onset of the flow instability (OFI) in steady and transient sub-cooled flow boiling is an important consideration in the design and operation of nuclear reactors especially material test reactors (MTR). In this study, a predictive model of OFI in the MTR has been developed. The model is based on both heat balance of bubble generation and condensation and force balance for the detached bubbles at the onset of significant void (OSV). Only one coefficient involved in the proposed model is identified by experimental data that covers the wide range of MTR operating conditions. The model results are compared with results of some previous models where the present model gives the lower deviation from the experimental data. A correlation for the heat flux at OFI is also developed based on the present model. The developed correlation gives lower deviation from the experimental data than the well-known correlation of Whittle and Forgan. The model is also used to predict the OFI locus during transient where it shows good agreement with the short transient of Lee and Bankoff as well.
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Affiliation(s)
- H. A. Khater
- Department of Mechanical Power Engineering, Cairo University, Giza 12613, Egypt
| | | | - M. A. Ibrahim
- Nuclear Power Plants Authority, 4 El-Nasr Avenue, Nasr City, Cairo 8191, Egypt
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Ibrahim MA, Sany D, El Shahawy Y, Awdallah A. Effect of activated vitamin D on glucoparameters in HCV seropositive and seronegative patients on chronic hemodialysis. Ren Fail 2012; 34:1188-94. [PMID: 22871095 DOI: 10.3109/0886022x.2012.706877] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Many studies support the role of vitamin D in the pathogenesis of both types of diabetes. Pancreatic tissues express the vitamin D receptor (VDR) and vitamin D-binding protein; some allelic variations in genes involved in vitamin D metabolism and VDR are associated with glucose intolerance, defective insulin secretion, and sensitivity. Epidemiological links have been established between type 2 diabetes mellitus (DM) and hepatitis C virus (HCV) infection. AIM To explore the possible therapeutic potential of pharmacologic doses of 1-α-hydroxy vitamin D therapy in improving pancreatic β-cell function in HCV seropositive hemodialysis (HD) patients. PATIENTS AND METHODS Twenty HCV seropositive HD patients and 20 HCV seronegative patients as control group were randomly selected from HD units. 1-α-Hydroxy vitamin D therapy was administrated in the dose ranged from 0.25 to 0.5 μg/day for 3 months. Corrected total serum calcium, phosphorus, intact parathyroid hormone (iPTH), 25-hydroxy vitamin D [25(OH) vitamin D], 1,25-dihydroxy vitamin D, and glucoparameters [fasting blood glucose, glycohemoglobin test (HbA1c%), homeostatic model assessment (HOMA)-insulin resistance, and HOMA-β-cell function% (B%)] were measured under basal conditions and after 3 months of therapy. RESULTS There was highly significant improvement in the concentrations of fetal bovine serum (FBS), serum insulin, HbA1c%, 25(OH) vitamin D, and HOMA-β-cell function in HCV seropositive and HCV seronegative groups after oral 1-alphacalcidiol therapy (p < 0.001). Positive correlation exists between the percentage increase in serum insulin and that in HOMA-β-cell function versus 25(OH) vitamin D (p < 0.021 and p < 0.027, respectively) in HCV negative group. CONCLUSION 1-α-Hydroxy vitamin D oral therapy may improve glycemic control in HCV seropositive and HCV seronegative HD patients.
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Affiliation(s)
- M A Ibrahim
- Division of Nephrology, Department of Internal Medicine, Ain-Shams University, Cairo, Egypt
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Ibrahim MA, Zuwahu MMB, Isah MB, Jatau ID, Aliyu AB, Umar IA. Effects of vitamin E administration on Plasmodium berghei induced pathological changes and oxidative stress in mice. Trop Biomed 2012; 29:98-106. [PMID: 22543609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effects of daily intraperitoneal doses of 1000 i.u/kg body weight of vitamin E on the course of Plasmodium berghei NK 65 infection and the parasite-induced anemia as well as alterations in the relative weight of some selected organs and antioxidant status in mice were investigated. The number of parasitized red cells were not initially affected by the vitamin administration but were persistently lowered after 11th day post infection to the termination of the experiment. The P. berghei infection was found to induce anemia, significantly (P<0.05) increased the relative weight of liver, spleen and kidney but significantly decreased (P<0.05) the relative brain weight. However, all the parasite-induced changes in these parameters were significantly (P<0.05) ameliorated by the vitamin administration. Furthermore, malonydialdehyde concentration in the serum, liver and brain of infected animals was significantly (P<0.05) increased whereas superoxide dismutase and catalase activities were significantly (P<0.05) decreased by the infection. But vitamin E administration was found to, a significant degree (P<0.05), reversed the disease-induced alterations in these oxidative stress markers. It was concluded that vitamin E at the dose and route used prevented P. berghei induced anemia as well as alterations in relative organ weight and antioxidant status in mice.
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Affiliation(s)
- M A Ibrahim
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria.
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Ibrahim MA, Aliyu AB, Sallau AB, Bashir M, Yunusa I, Umar TS. Senna occidentalis leaf extract possesses antitrypanosomal activity and ameliorates the trypanosome-induced anemia and organ damage. Pharmacognosy Res 2011; 2:175-80. [PMID: 21808562 PMCID: PMC3141310 DOI: 10.4103/0974-8490.65513] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 03/05/2010] [Accepted: 07/19/2010] [Indexed: 12/03/2022] Open
Abstract
The in vitro and in vivo antitrypanosomal effects of the ethanol extract of Senna occidentalis leaf were investigated. The crude extract exhibited an in vitro activity against Trypanosoma brucei brucei as it completely eliminated parasites’ motility within 10 minutes postincubation with 6.66 mg/ml of effective extract concentration. The extract was further used to treat experimentally T. brucei brucei infected rats at concentrations of 100 and 200 mg/kg body weight, beginning on day 5 post infections (p.i.). At the termination of the experiment on Day 11 p.i., the extract significantly (P < 0.05) kept the parasitemia lower than was recorded in the infected untreated rats. All the infected animals developed anemia, the severity of which was significantly (P < 0.05) ameliorated by the extract treatment. The infection caused significant (P < 0.05) increases in serum alanine and aspartate aminotransferases as well as serum urea and creatinine levels. However, treatment of infected animals with the extract significantly (P < 0.05) prevented the trypanosome-induced increase in these biochemical indices. Furthermore, the T. brucei infection caused hepatomegaly and splenomegaly that were significantly (P < 0.05) ameliorated by the extract administration. It was concluded that orally administered ethanol extract of S. occidentalis leaf possessed anti-T. brucei brucei activity and could ameliorate the disease-induced anemia and organ damage.
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Affiliation(s)
- M A Ibrahim
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria
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Ibrahim MA, Aliyu AB, Abusufiyanu A, Bashir M, Sallau AB. Inhibition of Naja nigricolis (Reinhardt) venom protease activity by Luffa egyptiaca (Mill) and Nicotiana rustica (Linn) extracts. Indian J Exp Biol 2011; 49:552-4. [PMID: 21800507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Luffa egyptiaca and Nicotiana rustica are used in traditional medicine to treat snakebites and were evaluated for inhibitory activities on Naja nigricolis venom protease. The aqueous and ethanolic extracts of L. egyptiaca significantly reduced the maximum velocity (Vmax) and the computed index of physiological efficiency (Kcat) of the enzyme in a dose dependent fashion. The protease activity was non-competitively inhibited by the aqueous extract of N. rustica with the Vmax significantly decreased and the K(M) remained unchanged. However, the N. rustica ethanol extract completely inhibited the protease activity. Ethyl acetate fractions partitioned from ethanol extracts of both plants were also found to completely inhibit the N. nigricolis venom protease activity at 0.1 and 0.05%. The use of these plants could be important in the treatment of snakebites.
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Affiliation(s)
- M A Ibrahim
- Department of Biochemistryi, Ahmadu Bello University, Zaria, Nigeria.
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Awobusuyi JO, Kukoyi OO, Ibrahim MA, Atiba M. Indices of kidney damage and cardiovascular disease risk factors in a semiurban community of iloye, South-west Nigeria. Int J Nephrol 2011; 2011:564050. [PMID: 21660309 PMCID: PMC3108107 DOI: 10.4061/2011/564050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 03/22/2011] [Accepted: 03/28/2011] [Indexed: 11/25/2022] Open
Abstract
Health screening exercises are important, as they enable early detection of diseases in individual subjects and also enable data collection, useful in estimating disease burden in the community. This paper describes the findings of a health screening exercise conducted in a semiurban population of Iloye, by the Rotary Club of Ota, Ogun State, Western Nigeria, as a part of its community-oriented services and projects. Three hundred and twenty six community members were screened during the exercise. There were 189 (57.97%) females and 137 (42.03%) males, with a mean age of 43.5 ± 14.88 yrs. Urinary abnormality and/or creatinine clearance less than 90 mls/min was detected in 147 (45.09%) participants. 99 (30.37%) participants had proteinuria, 16 (4.91%) had haematuria, and 5 (1.53%) participants had both haematuria and proteinuria. Eight (2.45%) participants had GFR less than 60 mls/min. Elevated blood pressure was found in 152 (46.63%), while 3 (0.9%) participants had diabetes, 71 (21.8%) were obese, 16 (4.9%) had hypercholesterolaemia, and 3 (0.9%) had hypertriglyceridaemia. Prevalence of both smoking and alcohol consumption was 6 (1.84%). It was concluded that the prevalence of indices of kidney damage and cardiovascular risk factors is high in Iloye community.
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Affiliation(s)
- J O Awobusuyi
- Department of Medicine, Lagos State University College of Medicine, 1-5 Oba Akinjobi Street, Ikeja, Lagos, Nigeria
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Morcos MM, Morcos WM, Ibrahim MA, Shaheen MA. Environmental exposure to endotoxin in rural and urban Egyptian school children and its relation to asthma and atopy. Minerva Pediatr 2011; 63:19-26. [PMID: 21311426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM The environmental exposure of farm children to micro-organisms in dust has been related to a reduced prevalence of asthma and atopy. The aim of this study was to evaluate the relation between settled dust endotoxin and development of asthma and/or atopy in rural and urban school children. METHODS A comparative study was conducted on 40 rural and 40 urban school children (6-12 years). Parental self-reported allergic symptoms questionnaires were distributed. Forced expiratory volume in the first second (FEV1), forced vital capacity (FVC) were measured using MIR spirobank and FVE1% was calculated. Skin prick testing with the most common aeroallergens was performed. Limulus amebocyte lysate endotoxin content was measured in settled dust samples. RESULTS The rural group which has higher exposure to farm animals and feeding on farm milk has less allergic symptoms. Rural students showed highly significant FEV1, FEV1% and significant FVC versus urban students (110.9±19.7, 103.8±12.2, 105.8±24.3 vs. 92.3±24.2, 98.4±18.9, 92.7±23.2, respectively). Rural school dust contains significantly higher level of endotoxin (2-3 EU/mg) than urban school (0-0.1 EU/mg). Urban residence was associated with increase risk of asthma after age and sex adjustments ([ORadj], 5.16; 95% [CI], 0.95-28). CONCLUSION Our results support the hygiene theory, i.e., endotoxin exposure could be protective to asthma and atopy in school children.
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Affiliation(s)
- M M Morcos
- Child Health Department, National Research Centre, Cairo, Egypt.
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Abdelmoaty MA, Ibrahim MA, Ahmed NS, Abdelaziz MA. Confirmatory studies on the antioxidant and antidiabetic effect of quercetin in rats. Indian J Clin Biochem 2010; 25:188-92. [PMID: 23105908 DOI: 10.1007/s12291-010-0034-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Quercetin (QE), one of natural flavanoid group, was widely distributed as a secondary metabolite in plant kingdom. It has been believed that oxidative stress plays a role in the pathogenesis of diabetes mellitus (DM). The aim of the present study was the evaluation of possible effects of QE on blood glucose and antioxidant enzymes in experimental streptozotocin (STZ)-induced diabetes in rats. STZ was injected intraperitoneally with single dose of 50 mg/kg for diabetes induction. QE (15 mg/kg bw day, intraperitoneal (i.p.) injection) was injected for 3 days prior to STZ administration; these injections were continued to the end of the study (for 25 days). Glucose tolerance test and random plasma glucose were done for all animals. Cellular antioxidant enzymes such as glutathione peroxidase (GSHPx), superoxide dismutase (SOD) and catalase (CAT) activities were measured in pancreatic homogenates. Quercetin had no effect on plasma glucose level of normal animals but its pre- treatment was able to prevent diabetes induced by single intraperitoneal injection of streptozocintreated rats. Antioxidant enzyme activity significantly decreased in STZ induced diabetic group. QE treatment significantly increased the antioxidant enzyme activities. It could be concluded that quercetin, a flavonoid with antioxidant properties, exerting its beneficial antidiabetic effects.
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Affiliation(s)
- Mohamed Ahmed Abdelmoaty
- Department of Biochemistry, Sohag University, Sohag, Egypt ; Sohag Faculty of Medicine, Sohag University, Sohag, Egypt ; Department of Biochemistry, Sohag faculty of Medicine, Sohag University, Sohag, Egypt
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Abdel-Ghany AE, Ibrahim MA. Potentials of human exposure to Listeria spp. from dairy cattle. Journal of Veterinary Medical Research 2010. [DOI: 10.21608/jvmr.2020.77600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Isah AB, Ibrahim YKE, Abdulrahman EM, Ibrahim MA. The hypoglycaemic activity of the aqueous extract of Stachytarpheta angustifolia (Verbanaceae) in normoglycaemic and alloxan-induced diabetic rats. Pak J Biol Sci 2009; 10:137-41. [PMID: 19070000 DOI: 10.3923/pjbs.2007.137.141] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The hypoglycaemic activity of the aqueous extract of Stachytarpheta angustifolia (Verbanaceae) was studied in normoglycaemic and alloxan-induced diabetic rats. The extract was administered orally to the rats and blood glucose level was monitored for 7 h. Results indicate that the aqueous extract (750 mg kg(-1)) produced a significant blood glucose reduction in both normoglycaemic and alloxan-induced diabetic rats (p < 0.05). The present result therefore appears to support the use of the plant aqueous extract for the management of type 2 diabetes by traditional medical practitioners in Northern Nigeria. The mechanism of action of the aqueous extract needs to be studied.
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Affiliation(s)
- A B Isah
- Department of Pharmaceutics and Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ahmadu Bello University, Zaria, Nigeria
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Ibrahim MA, Stewart-Jones A, Pulkkinen J, Poppy GM, Holopainen JK. The influence of different nutrient levels on insect-induced plant volatiles in Bt and conventional oilseed rape plants. Plant Biol (Stuttg) 2008; 10:97-107. [PMID: 18211550 DOI: 10.1111/j.1438-8677.2007.00013.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Transgenic Bt (expressing the cry1Ac endotoxin gene) and conventional oilseed rape plants grown in different soils were used to study nutrient uptake and emission of volatiles after herbivore damage. All plants were greenhouse-grown in soils representing low-, medium- and high-nutrient levels. The concentrations of N, P, K, Mg and Zn were significantly affected by the transgene, while the main effect of soil type appeared in N, P, Ca, Mg, B, Mn and Zn concentrations in the plants. Plants with four to five leaves were infested with the third instar larvae of Bt-susceptible Plutella xylostella for 48 h, and samples of volatiles were collected and analysed. In the first experiment, the soil nutrient level had a significant effect on the emissions of (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate, hexyl acetate, (E)-4,8-dimethyl-1,3,7-non-atriene (DMNT), beta-elemene, gamma-bisabolene, alpha-bisabolene and (E)-nerolidol. The induction of these volatiles was significantly higher in infested conventional plants grown at a high-soil nutrient level compared to infested conventional plants at a low-soil nutrient level. In the second experiment, the soil nutrient level had a significant effect on the emissions of (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate and beta-elemene and, again, this was significantly higher in infested conventional plants grown at high-soil nutrient levels in comparison with infested plants at a low-soil nutrient level. In both experiments, the transgene effect was significant on the emissions of DMNT and (E,E)-alpha-farnesene. The differences in emissions between the two separate experiments suggest that growth conditions (particularly daylength) and sampling procedure may affect the ratio of compounds detected in the emission blend, even though the response to herbivory, nutrient availability and the transgene were similar.
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Affiliation(s)
- M A Ibrahim
- Department of Environmental Science, University of Kuopio, Kuopio, Finland.
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Hassan MM, Widaa SO, Ibrahim MA, Abu Shara R, Osman OM, Numairy MSM, El Khider ETM. Studies on the ecology of sandflies (Diptera: Psychodidae) in Sudan: the first records of Phlebotomus orientalis and P. rodhaini in northern Sudan. Ann Trop Med Parasitol 2007; 101:653-5. [PMID: 17877884 DOI: 10.1179/136485907x229040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M M Hassan
- Tropical Medicine Research Institute, National Centre for Research, P.O. Box 1304, Khartoum, Sudan; Khartoum College of Medical Science, El Jerief West, 1st Block 1, No. 398, P.O. Box 10995, Sudan
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Affiliation(s)
- M A Ibrahim
- Head of the General Research Section, Ministry of Agriculture, Egypt, U. A. R
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Sayyah SM, Kamal SM, Abd El-Rehim SS, Ibrahim MA. Electrochemical Polymerization of 3-Methoxyaniline and Characterization of the Obtained Polymer. INT J POLYM MATER PO 2006. [DOI: 10.1080/009140390953520] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Krobot KJ, Kaufman JS, Christensen DB, Preisser JS, Miller WC, Ibrahim MA. Assessing, characterizing and communicating healthcare barriers. Gesundheitswesen 2005. [DOI: 10.1055/s-2005-920725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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