5 results on '"Ebrahimzadeh, M."'
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2. In Vitro Antibacterial Activity of Adiantum capillus Veneris Extraction with Methanol, Chloroform, and Ether Solvents against Methicillin-resistant Staphylococcus aureus.
- Author
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Ebrahimzadeh M, Rahbari S, Doust RH, and Mojab F
- Abstract
Background: The increasing problem of multi-drug resistant (MDR) pathogens is a worldwide concern, especially in the pharmaceutical industry. At the same time, medicinal plants have renewed interest because of their wide variety of bioactive phytochemicals, which could be used to develop new antimicrobial drugs. This renewed interest is partly due to the growing resistance to traditional drugs and their associated side effects., Methods: The objective of this study is to assess the antimicrobial properties of the total extract and various fractions of Adiantum capillus veneris against Methicillin-resistant Staphylococcus aureus (MRSA). The aerial parts of Adiantum capillus veneris were subjected to extraction using methanol, chloroform, and ether, and the resulting extracts were tested for their antimicrobial activity against MRSA. Additionally, essential oil was obtained from the aerial parts using a Clevenger apparatus and boiling water. Furthermore, Gas Chromatography-Mass Spectrometry (GC/MS) was utilized to analyze the phytochemicals isolated from the extracts of Adiantum capillus veneris., Results: The essential oil was obtained through distillation and then analyzed using GC/MS. The antimicrobial activity was evaluated using the agar diffusion method., Conclusion: GC/MS analysis revealed that the composition was primarily phytol (59.9%), constituting 99.3% of phyto-constituents. However, both the total extract and the individual fractions exhibited no inhibitory effects against MRSA strains., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
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- 2024
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3. Changes in Corticospinal Tract Consistency after Dry Needling in a Stroke Patient.
- Author
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Ebrahimzadeh M, Nakhostin Ansari N, Abdollahi I, Akhbari B, and Dommerholt J
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Background: Dry needling (DN) is a technique employed to mitigate spasticity and enhance functionality in stroke patients. We report the impact of DN on both corticospinal tract (CST) consistency and wrist flexors spasticity of an individual affected by stroke., Case: The participant was a 57-year-old male who had experienced an ischemic stroke 9 months prior. The primary outcome measures included fractional anisotropy (FA), asymmetry FA (aFA), ratio FA (rFA), and Modified Modified Ashworth Scale (MMAS). Additionally, secondary outcomes encompassed wrist extension range of motion (ROM) and performance in the box and block test (BBT). These measurements were taken both before and after the administration of DN treatment., Results: After the application of DN, the mean FA of the ipsilesional CST increased from 0.35 to 0.39, concomitantly with a decline in aFA from 0.18 to 0.13. Notably, the rFA exhibited a pre-DN value of 0.69, which subsequently rose to 0.76 post-DN. Moreover, a significant reduction in MMAS scores was detected, from a score of "3" prior to DN application to a post-DN score of "1". In terms of wrist mobility, both active and passive extension ROM exhibited favorable improvements, with an increase of 12° for active extension and 16° for passive extension. Furthermore, there was a substantial improvement in the BBT score, an indicator of manual dexterity, ascending from 12 to 24., Conclusion: Enhancements in CST consistency suggest it as a potential mechanism contributing to the observed improvements following DN in this stroke case., Competing Interests: The authors declare that they have no conflicts of interest with respect to the research, authorship, and/or publication of this article., (Copyright © 2024 Masoome Ebrahimzadeh et al.)
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- 2024
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4. Unveiling the Antibacterial Properties of Statins: An In Vitro Study on Helicobacter pylori .
- Author
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Ebrahimzadeh M, Asgharpour F, Shokri Shirvani J, Kazemi S, and Moghadamnia AA
- Abstract
Background: Helicobacter pylori ( H. pylori ), a widespread bacterial pathogen, is associated with various gastrointestinal diseases, including gastric cancer. Statins, widely prescribed cholesterol-lowering agents, have demonstrated pleiotropic effects, including potential antimicrobial properties. This in vitro study investigated the direct antibacterial effects of three clinically approved statins, simvastatin, atorvastatin, and rosuvastatin, against H. pylori isolates., Methods: H. pylori strains were isolated from gastric biopsies of dyspeptic patients and identified by microbiological techniques. The minimum inhibitory concentrations (MICs) of statins were determined using the agar dilution method, and their antimicrobial activity was evaluated by the disc diffusion method using different concentrations of simvastatin, atorvastatin, rosuvastatin, tetracycline, and amoxicillin. Scanning electron microscopy (SEM) was employed to examine the morphology of H. pylori cells., Results: The minimum inhibitory concentration (MIC) values ( μ g/mL) of atorvastatin, rosuvastatin, simvastatin, tetracycline, and amoxicillin against H. pylori were 240 ± 20, 450 ± 20, 460 ± 15, 155 ± 30, and 140 ± 20, respectively. In the disc diffusion assay, atorvastatin and rosuvastatin produced significantly larger inhibition zones compared to simvastatin at all concentrations tested ( p < 0.05). The inhibition zone diameters (mm) increased with higher statin concentrations, ranging from 9 ± 1.4 to 13 ± 1.4 for atorvastatin, 8 ± 0.9 to 11 ± 0.6 for rosuvastatin, and 5 ± 1.3 to 6 ± 1.4 for simvastatin at the highest tested concentration (1200 μ g/ml). SEM analysis revealed the characteristic spiral morphology of H. pylori cells., Conclusion: Statins demonstrated varying degrees of antibacterial activity against H. pylori isolates, with atorvastatin exhibiting the highest potency. While the observed effects were lower than those of conventional antibiotics, these findings suggest the potential of statins as adjunctive agents or alternative therapeutic options, warranting further investigation through in vivo studies and clinical trials., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2024 Manijeh Ebrahimzadeh et al.)
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- 2024
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5. Investigation of Electromagnetic Wave Absorption Properties of Ni-Co and MWCNT Nanocomposites.
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Ebrahimzadeh M, Gharaati A, Jangjoo A, and Rezazadeh H
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Background: In recent years, severe electromagnetic interference among electronic devices has been caused by the unprecedented growth of communication systems. Therefore, microwave absorbing materials are required to relieve these problems by absorbing the unwanted microwave. In the design of microwave absorbers, magnetic nanomaterials have to be used as fine particles dispersed in an insulating matrix. Besides the intrinsic properties of these materials, the structure and morphology are also crucial to the microwave absorption performance of the composite. In this study, Ni-Co- MWCNT composites were synthesized, and the changes in electric permittivity, magnetic permeability, and reflectance loss of the samples were evaluated at frequencies of 2 to 18 GHz., Methods: Nickel-Cobalt-Multi Wall Carbon Nanotubes (MWCNT) composites were successfully synthesized by the co-precipitation chemical method. The structural, morphological, and magnetic properties of the samples were characterized and investigated by X-ray diffractometer (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM), and Vector Network Analyzer (VNA)., Results: The results revealed that the Ni-Co-MWCNT composite has the highest electromagnetic wave absorption rate with a reflectance loss of -70.22 dB at a frequency of 10.12 GHz with a thickness of 1.8 mm. The adequate absorption bandwidth (RL <-10 dB) was 6.9 GHz at the high-frequency region, exhibiting excellent microwave absorbing properties as a good microwave absorber patent., Conclusion: Based on this study, it can be argued that the Ni-Co-MWCNT composite can be a good candidate for making light absorbers of radar waves at frequencies 2- 18 GHz., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
- Published
- 2024
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