1
|
Vakilzadeh MM, Khayami R, Daneshdoust D, Moshfeghinia R, Sharifnezhad F, Taghiabadi Z, Moghadam HK, Karimi MA, Ghorbani A, Taqanaki PB, Boojar N, Azarshab A, Shahidsales S, Mahmoudian RA. Prevalence of tobacco use among cancer patients in Iran: a systematic review and meta-analysis. BMC Public Health 2024; 24:1081. [PMID: 38637741 PMCID: PMC11027381 DOI: 10.1186/s12889-024-18594-8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 04/15/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND The prevalence of tobacco use among various cancer types in Iran remains a significant concern, necessitating a comprehensive analysis to understand the extent and patterns of consumption. This study aimed to systematically review and analyze existing literature to delineate the prevalence of tobacco use across different cancer types in Iran, thereby providing a robust basis for future interventions and policy formulations. METHODS Adhering to the PRISMA guidelines, we conducted a systematic review and meta-analysis of literature available in PubMed and Scopus databases. The initial search identified 351 records, out of which 44 studies were selected based on their relevance and design. These studies spanned various time frames, starting from the 2001s up until 2022, and encompassed diverse geographical locations and cancer types in Iran. To avoid bias and potential data overlap, we opted to incorporate a single comprehensive study from the Golestan Cohort, encompassing all data, while excluding 10 other studies. Our final analysis incorporated data from 34 studies, which accounted for 15,425 patients and 5,890 reported smokers. Statistical analyses were performed to calculate the overall proportion of tobacco consumption and to conduct subgroup analyses based on different variables such as cancer types, gender, geographical locations, and types of tobacco used. RESULTS The analysis revealed a substantial prevalence of tobacco use among cancer patients in Iran, with an overall consumption rate of 43%. This rate varied significantly, ranging from 10 to 88% across individual studies. Subgroup analyses further highlighted disparities in tobacco consumption rates across different demographics, geographic areas, and cancer types. Notably, the 'ever' smokers category exhibited the highest prevalence of tobacco use. The study also identified a worrying trend of high cigarette smoking rates, along with variable consumption patterns of other forms of tobacco, including waterpipe, 'Naas', and 'Pipe'. CONCLUSIONS This systematic review and meta-analysis underscores a significant association between tobacco consumption and various cancer types in Iran, with a prevalence rate among cancer patients being three times higher than the average Iranian population. The findings indicate substantial heterogeneity in tobacco use patterns, emphasizing the need for targeted interventions to address this pressing health issue. The study serves as a critical resource for shaping future policies and strategies aimed at curbing tobacco use and mitigating its adverse effects on cancer prevalence in Iran.
Collapse
Affiliation(s)
| | - Reza Khayami
- Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Reza Moshfeghinia
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzad Sharifnezhad
- Department of Internal Medicine, Mashhad University of Medical Science, Mashhad, Iran
| | - Zahra Taghiabadi
- Department of Microbiology and Virology of Medicine, Mashhad University of Medical Science, Mashhad, Iran
| | | | - Mohammad Ali Karimi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Atousa Ghorbani
- Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | | | - Nima Boojar
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Adele Azarshab
- Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | |
Collapse
|
2
|
Atashkadi M, Mohadesi A, Karimi MA, Mohammadi SZ, Haji Aghaei V. Synthesis and characterization of Black Au nanoparticles deposited over g-C 3N 4 nanosheets: enhanced photocatalytic degradation of methylene blue. Environ Technol 2024; 45:1124-1140. [PMID: 36259634 DOI: 10.1080/09593330.2022.2138558] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Black AuNPs, prepared by a facile seeding growth method under ambient conditions, displayed efficient broadband absorption of the incident light over the entire visible and near-infrared regions of the solar spectrum. The spherical black AuNPs with the size of 2-4 nm were deposited over mesoporous g-C3N4 nanosheets. Novel black AuNPs/g-C3N4 plasmonic photocatalysts were used to remove methylene blue (MB) dye from an aqueous solution. The degradation efficiency for the optimal coupling of 1.3 wt.% black AuNPs with g-C3N4 (1.2 g) was found to be 85% within 60 min under visible light irradiation. The calculated kinetic constant was 0.0186 min-1 which was 6.4 and 2.9 times greater than those for g-C3N4 and AuNPs/g-C3N4 nanocomposite, respectively. The excellent potential in photocatalysis was attributed to the synergistic interactions of the g-C3N4 conduction band and the localized surface plasmon resonance effect of black AuNPs. These properties were responsible for the generation of high-energy electrons, a negative shift in the Fermi level of black AuNPs, and the migration of charge carriers. This work studied a new insight into black gold nanoparticles via the design of a visible-light-driven photocatalyst and provided a perspective on valuable photo-related applications such as water treatment.
Collapse
|
3
|
Behrouzian Fard G, Ahmadi MH, Gholamin M, Amirfakhrian R, Saberi Teimourian E, Karimi MA, Hosseini Bafghi M. CRISPR-Cas9 technology: As an efficient genome modification tool in the cancer diagnosis and treatment. Biotechnol Bioeng 2024; 121:472-488. [PMID: 37986642 DOI: 10.1002/bit.28603] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/30/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
Cancer is the second most common cause of death globally and is a major public health concern. Managing this disease is difficult due to its multiple stages and numerous genetic and epigenetic changes. Traditional cancer diagnosis and treatment methods have limitations, making it crucial to develop new modalities to combat the increasing burden of cancer. The clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein 9 (Cas9) system has transformed genetic engineering due to its simplicity, specificity, low cytotoxicity, and cost-effectiveness. It has been proposed as an effective technology to enhance cancer diagnosis and treatment strategies. This article presents the most recent discoveries regarding the structure, mechanism, and delivery methods of the highly powerful genome editing tool, CRISPR-Cas9. In terms of diagnosis, the article examines the role of CRISPR-Cas9 in detecting microRNAs and DNA methylation, and discusses two popular gene detection techniques that utilize the CRISPR-Cas system: DNA endonuclease-targeted CRISPR trans reporter and specific high sensitivity enzymatic reporter unlocking. Regarding treatment, the article explores several genes that have been identified and modified by CRISPR-Cas9 for effective tumorigenesis of common cancers such as breast, lung, and colorectal cancer. The present review also addresses the challenges and ethical issues associated with using CRISPR-Cas9 as a diagnostic and therapeutic tool. Despite some limitations, CRISPR-Cas9-based cancer diagnosis has the potential to become the next generation of cancer diagnostic tools, and the continuous progress of CRISPR-Cas9 can greatly aid in cancer treatment.
Collapse
Affiliation(s)
- Ghazaleh Behrouzian Fard
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Hossein Ahmadi
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehran Gholamin
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Razieh Amirfakhrian
- Department of Microbiology and Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elahe Saberi Teimourian
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ali Karimi
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahdi Hosseini Bafghi
- Department of Laboratory Sciences, Faculty of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
4
|
Abdi K, Ezoddin M, Adlnasab L, Kabiri BA, Karimi MA, Behnamipour S, Alimoradi H. Effervescent tablet-assisted deep eutectic solvent based on magnetic nanofluid for liquid phase microextraction of tyrosine kinase inhibitors in plasma samples by high-performance liquid chromatography. Pharmacol Rep 2023; 75:1265-1275. [PMID: 37717246 DOI: 10.1007/s43440-023-00524-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/19/2023]
Abstract
BACKGROUND Tyrosine kinase inhibitors (TKIs) are efficient anti-cancer drugs. The analysis of TKIs in the treatment of cancer is important to achieve the highest anti-cancer effects with minimal toxicities. Herein, we report an efficient effervescent tablet-assisted deep eutectic solvent based on nanofluid (ETA-DES-NF) combined with HPLC-UV for the determination of three anti-cancer drugs (erlotinib, imatinib, and nilotinib) in human plasma samples. METHODS In this method, a magnetic nanofluid composed of deep eutectic solvent (DES) and Fe3O4@SiO2 nanoparticles was used as an extraction solvent. The deep eutectic solvent acted as a carrier and stabilizer for Fe3O4@SiO2 nanoparticles. A tablet was used in the nanofluid for dispersion. The effervescent tablet was implemented to generate in situ CO2 and provide the effective dispersion of the sorbent into the sample solution for diminishing the extraction time and improving the extraction efficiency. Moreover, the magnetic nanofluid enhanced phase separation efficiency without centrifugation to collect the organic solvent. RESULTS The synthesized nanofluid was characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM). The impact of main parameters, including the type and volume of DES, the composition of the tablet, the composition of the nanofluid and the composition of eluent, were optimized. According to the optimized conditions, the limits of detection (LODs) and the limits of quantitation (LOQs) were from 0.5-0.8 to 1.5-2.4 μg L-1 for imatinib, erlotinib, and nilotinib, respectively. The intra-day and inter-day relative standard deviations (RSD% n = 5) were determined to be 3.1-5% and 6.4-7.5%, respectively. CONCLUSIONS The developed method displayed high sensitivity, low consumption of solvent, low cost, simplicity, high recoveries, short extraction time, and good repeatability for determination of three anti-cancer drugs in human plasma samples.
Collapse
Affiliation(s)
- Khosrou Abdi
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Iranian National Center for Addiction Studies (INCAS), Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Ezoddin
- Department of Chemistry, Payame Noor University(PNU), P.O. BOX, Tehran, 19395-4697, Iran.
| | - Laleh Adlnasab
- Chemistry Research Group, Chemistry, and Petrochemistry Research Center, Standard Research Institute, P.O. Box, Karaj, 31745-139, Iran
| | - Bahar Aziz Kabiri
- Department of Chemistry, Payame Noor University(PNU), P.O. BOX, Tehran, 19395-4697, Iran
| | - Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University(PNU), P.O. BOX, Tehran, 19395-4697, Iran
| | - Somaye Behnamipour
- Research Center of Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
| | - Houman Alimoradi
- School of Biomedical Sciences, University of Otago, Dunedin, 9054, New Zealand
| |
Collapse
|
5
|
Tavallali H, Parhami A, Rajaei Dastghaib S, Karimi MA. A novel and simple naphthol azo dye chemosensor as a naked eye detection tool for highly selective, sensitive and accurate determination of thiourea in tap water, juices and fruit skins. Spectrochim Acta A Mol Biomol Spectrosc 2023; 289:122194. [PMID: 36512963 DOI: 10.1016/j.saa.2022.122194] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 11/22/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
In the present study, a highly accurate and sensitive azo-dye-based colorimetric sensor based on Eriochrome Black T (EBT) was proposed to detect and determine thiourea (TU). TU is truly an important toxic and carcinogenic hazardous pollutant as approved by EPA and IARC. This chemosensor shows a distinct color change from blue to pink during interaction with TU in aqueous medium. So EBT is capable as an applied tool for naked eye detection of TU as its color change is easily observed without any means. The sensing mechanism was also investigated using UV-vis absorption and FT-IR spectra. The linear range and the detection limit of TU sensing were respectively 0.15-18.5 μmol/L and 0.02 μmol/L. In addition, the relative standard deviation (RSD) based on ten repetitions calculated for two different TU concentrations 4.4 and 9.0 μmol/L were 2.3 % and 1.8 %, respectively. Besides its useful application as a naked eye detection tool, the advantages of the developed method include simplicity, elimination of tedious separation and pre-concentration steps, executable in neutral aqueous media, low costs, high accuracy, linear response for wide range of concentrations, low detection limit, high sensitivity, compatibility, and excellent selectivity. The concentration of TU in tap water, fruit juices or fruit skin samples can be visually detected and determined easily using this method. The results showed that EBT is an ideal colorimetric chemosensor for TU, which has been reported for the first time.
Collapse
Affiliation(s)
- Hossein Tavallali
- Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran.
| | - Abolfath Parhami
- Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran
| | - Shiva Rajaei Dastghaib
- Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran
| | - Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran
| |
Collapse
|
6
|
Karimi MA, Goudarzi M, Khodayar MJ, Khorsandi L, Mehrzadi S, Fatemi I. Gemfibrozil palliates adriamycin-induced testicular injury in male rats via modulating oxidative, endocrine and inflammatory changes in rats. Tissue Cell 2023. [PMID: 36863109 DOI: 10.1016/j.tice.2023.102037] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Adriamycin (ADR), an antineoplastic drug, is widely used to treat different types of cancers. Yet, the usage is limited because of its severe side effects on testis. On the other hand, gemfibrozil (GEM), as an anti-hyperlipidemic drug, has other pharmacological effects independent of lipid- lowering activity including anti-inflammatory and antioxidant properties. The present experiment was designed to investigate the effect of GEM on ADR-induced testicular injury in male rats. A total of 28 male Wistar rats were divided into 4 equal groups: Control; ADR; ADR + GEM; GEM. Serum level of testosterone, luteinizing hormone and follicle stimulating hormone were assessed. Also, testicular tissue oxidant/antioxidant markers (malondialdehyde, total antioxidant capacity, nitric oxide, superoxide dismutase, catalase, glutathione peroxidase and glutathione) and proinflammatory cytokines (tumor necrosis factor-α and interleukin-1β) were measured. Histopathological studies were conducted on testes. GEM improved hormonal profile and antioxidant defenses in comparison with ADR-treated animals. GEM, significantly reduced the production of proinflammatory cytokines compared with ADR-treated animals. Hormonal and biochemical results were further supported by testicular histopathological findings. Thus, GEM might represent a promising therapeutic modality for the attenuation of testicular injury induced by ADR in clinic.
Collapse
Affiliation(s)
- Mohammad Ali Karimi
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Islamic Republic of Iran
| | - Mehdi Goudarzi
- Medicinal Plant Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Islamic Republic of Iran
| | - Mohammad Javad Khodayar
- Department of Toxicology, Pharmacy school, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Islamic Republic of Iran
| | - Layasadat Khorsandi
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Islamic Republic of Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Iman Fatemi
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Islamic Republic of Iran.
| |
Collapse
|
7
|
Zarei A, Hatefi-Mehrjardi A, Karimi MA, Mohadesi A. Impedimetric glucose biosensing based on drop-cast of porous graphene, nafion, ferrocene, and glucose oxidase biocomposite optimized by central composite design. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116544] [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: 10/18/2022]
|
8
|
Mashhadi Farahani S, Dadmehr M, Ali Karimi M, Korouzhdehi B, Amin Karimi M, Rajabian M. Fluorometric detection of phytase enzyme activity and phosphate ion based on gelatin supported silver nanoclusters. Food Chem 2022; 396:133711. [PMID: 35853372 DOI: 10.1016/j.foodchem.2022.133711] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/04/2022]
Abstract
Phytase is the commercial enzyme for bioconversion of phytate substrate to digestible phosphate ions. Recently silver nanoclusters (AgNCs) have received great attention as the optical transducer nanoparticles in biosensors structure. The novel detection platform was developed to detect the phytase enzyme activity and phosphate ions based on fluorescence quenching of AgNCs. The AgNCs were synthesized through gelatin supported reaction and characterized by TEM, FTIR and XRD analysis. The hydrolytic effect of phytase enzyme and subsequent phosphate release led to suppression of AgNCs fluorescence. The linear range was observed for enzyme in the range of 0.5-5 U/mL with the detection limit of 0.2 U/mL. Also, the same fluorescence quenching effect was observed in the presence of phosphate ion in the linear range of 1 to 16 µM with a detection limit of 0.5 µM. The proposed mechanism showed effectiveness of detection strategy for detection of phytase enzyme and phosphate ion.
Collapse
Affiliation(s)
| | - Mehdi Dadmehr
- Department of Biology, Payame Noor University, Tehran, Iran.
| | | | - Behnaz Korouzhdehi
- Department of Biotechnology, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
| | - Mohammad Amin Karimi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Rajabian
- Department of Biology, Payame Noor University, Tehran, Iran
| |
Collapse
|
9
|
Afzali Z, Mohadesi A, Ali Karimi M, Fathirad F. A highly selective and sensitive electrochemical sensor based on graphene oxide and molecularly imprinted polymer magnetic nanocomposite for patulin determination. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
10
|
Bahmanzadegan A, Tavallali H, Tavallali V, Karimi MA. Bioactive compounds of Punica granatum L. wastes by high performance liquid chromatography analysis. Nat Prod Res 2022:1-5. [PMID: 35175886 DOI: 10.1080/14786419.2022.2041634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/30/2022]
Abstract
The massive pomaces of Punica granatum L. exhibit a challenging losses exposure difficulty for the processing industries. The resent study was aimed to investigate the bioactive compounds of pomace extracts to introduce it to different industries such as pharmaceutical, food, medicinal, agricultural etcetera for optimum use. Four different extracts were prepared and the phenolic compounds were quantified using HPLC-DAD. Different amounts of phenolic compounds were detected in the samples including gallic acid, catechin, ellagic acid, rosmarinic acid, hesperidin, p-coumaric acid and chlorogenic acid. Gallic acid was major compound in all studied extracts of pomaces, with the maximum amount belonging to water extract (at 60 °C). The average amount of gallic acid detected in water extract (at 60 °C) of Punica granatum L. was 11.25 mg g-1 dry weight, while it was 3.24 3.02 and 1.09 mg g-1 dry weight for the extracts obtained by distilled water, methanol and methanol 80%, respectively.
Collapse
Affiliation(s)
- Atefeh Bahmanzadegan
- Department of Chemistry, Payame Noor University (P NU), Tehran, Iran, P. O. Box 19395-4697
| | - Hossein Tavallali
- Department of Chemistry, Payame Noor University (P NU), Tehran, Iran, P. O. Box 19395-4697
| | - Vahid Tavallali
- Department of Agriculture, Payame Noor University (P NU), Tehran, Iran, P.O. Box 19395-4697
| | - Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University (P NU), Tehran, Iran, P. O. Box 19395-4697
| |
Collapse
|
11
|
Tavallali H, Rahimi E, Deilamy‐Rad G, Karimi MA, Tavallali M. A novel colorimetric chemosensor for selective and highly sensitive determination of thiourea: An approach toward a molecular keypad lock. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202000485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Eisa Rahimi
- Department of Chemistry Payame Noor University Tehran Iran
| | | | | | | |
Collapse
|
12
|
Karimi MA, Ranjbar M, Mohadesi A. One‐step
ultrasonic production of the chitosan/lactose/
g‐C
3
N
4
nanocomposites with lactose as a biological capping agent: Photocatalytic activity study. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202000496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
| | - Mehdi Ranjbar
- Neuroscience Research Center Institute of Neuropharmacology, Kerman University of Medical Sciences Kerman Iran
- Pharmaceutics Research Center Institute of Neuropharmacology, Kerman University of Medical Sciences Kerman Iran
| | | |
Collapse
|
13
|
Mohammadi SZ, Darijani Z, Karimi MA. The Synthesis of Magnetic Activated Carbon/Cobalt Nanocomposite for Fast Removal of Cr(VI) from Wastewater: Kinetics, Thermodynamics, and Adsorption Equilibrium Studies. Russ J Phys Chem 2021. [DOI: 10.1134/s0036024421140144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
14
|
Asiabar BM, Karimi MA, Tavallali H, Rahimi-Nasrabadi M. Application of MnFe2O4 and AuNPs modified CPE as a sensitive flunitrazepam electrochemical sensor. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105745] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
15
|
Adlravan E, Sepideh jalilzadeh-Razin, Nejati K, Karimi MA, Mousazadeh H, Abbasi A, Dadashpour M. Potential activity of free and PLGA/PEG nanoencapsulated nasturtium officinale extract in inducing cytotoxicity and apoptosis in human lung carcinoma A549 cells. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102256] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
16
|
Tavallali H, Espergham O, Deilamy-Rad G, Karimi MA, Rostami S, Rouhani-Savestani AR. Dye/metal ion-based chemosensing ensemble towards l-histidine and l-lysine determination in water via different optical responses. Anal Biochem 2020; 604:113811. [DOI: 10.1016/j.ab.2020.113811] [Citation(s) in RCA: 2] [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] [Received: 01/18/2020] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 02/07/2023]
|
17
|
Mohammadi SZ, Mofidinasab N, Karimi MA, Mosazadeh F. Fast and efficient removal of Pb(II) ion and malachite green dye from wastewater by using magnetic activated carbon-cobalt nanoparticles. Water Sci Technol 2020; 82:829-842. [PMID: 33031063 DOI: 10.2166/wst.2020.375] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A high-surface-area and inexpensive activated carbon has been produced from lemon peel using chemical activation with H3PO4 at 500 °C in a N2 atmosphere. Afterwards, the synthesized cobalt nanoparticles using coprecipitation method were adsorbed on the activated carbon surface, and as a result magnetic activated carbon was obtained. Sample characterization has been assessed via X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption-desorption and magnetic properties. It was found that magnetic activated carbon-cobalt nanoparticles (MAC/Co) synthesized had a high saturation magnetization. The MAC/Co revealed super-paramagnetic behaviors at room temperature, and have been readily isolated from solution by using an exterior magnet. Next, adsorption behavior of malachite green and Pb(II) onto the generated MAC/Co has been examined. Sorption kinetics and equilibrium have been studied using batch procedure. The kinetic and isothermal adsorption results were matched completely with the Elovich and Langmuir models, respectively. Based on the Langmuir model, the highest adsorption capacities of malachite green dye and Pb(II) ion respectively were 263.2 and 312.5 mg g-1 at room temperature. Based on the results, the MAC/Co is a probable economic and effective adsorbent that can be employed as a new adsorbent to remove malachite green dye and Pb(II) from wastewater.
Collapse
Affiliation(s)
| | | | | | - Farideh Mosazadeh
- School of Public Health, Bam University of Medical Sciences, Bam, Iran
| |
Collapse
|
18
|
Radpour A, Bahrami-Motlagh H, Taaghi MT, Sedaghat A, Karimi MA, Hekmatnia A, Haghighatkhah HR, Sanei-Taheri M, Arab-Ahmadi M, Azhideh A. COVID-19 Evaluation by Low-Dose High Resolution CT Scans Protocol. Acad Radiol 2020; 27:901. [PMID: 32335002 PMCID: PMC7164844 DOI: 10.1016/j.acra.2020.04.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/09/2020] [Accepted: 04/09/2020] [Indexed: 01/08/2023]
Affiliation(s)
| | - Hooman Bahrami-Motlagh
- Radiology department, Loghman Hakim hospital, Shahid Beheshti University of Medical Science, Tehran, Iran
| | | | | | | | - Ali Hekmatnia
- Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Morteza Sanei-Taheri
- Shohada Tajrish Hospital, Shahid Beheshti University of Medical Science, Tehran, Iran; President of Iranian Society of Radiology, Tehran Iran.
| | - Mehran Arab-Ahmadi
- Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Science, Tehran, Iran
| | - Arash Azhideh
- Radiology department, Shohada Tajrish hospital, Shahid Beheshti University of Medical Science, Tehran, Iran
| |
Collapse
|
19
|
Karimi MA, Atashkadi M, Ranjbar M, Habibi-Yangjeh A. Novel visible-light-driven photocatalyst of NiO/Cd/g-C3N4 for enhanced degradation of methylene blue. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
20
|
Karimi MA, Radpour A, Sedaghat A, Gity M, Hekmatnia A, Sanei-Taheri M, Tarzamani MK, Arab-Ahmadi M. Proposed Imaging Guidelines for Pregnant Women Suspected of Having COVID-19. Acad Radiol 2020; 27:902-903. [PMID: 32335003 PMCID: PMC7164866 DOI: 10.1016/j.acra.2020.04.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/09/2020] [Accepted: 04/09/2020] [Indexed: 12/01/2022]
|
21
|
Sedaghat A, Gity M, Radpour A, Karimi MA, Haghighatkhah HR, Keshavarz E, Hekmatnia A, Arab-Ahmadi M, Sanei-Taheri M, Azhideh A. COVID-19 Protection Guidelines in Outpatient Medical Imaging Centers. Acad Radiol 2020; 27:904. [PMID: 32336647 PMCID: PMC7164879 DOI: 10.1016/j.acra.2020.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 04/11/2020] [Accepted: 04/11/2020] [Indexed: 11/22/2022]
Affiliation(s)
| | - Masoumeh Gity
- Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Hamid Reza Haghighatkhah
- Department of Radiology, Shohada Tajrish Hospital,Shahid Beheshti University of Medical Sciences, Tehran,Iran
| | - Elham Keshavarz
- Clinical Research Development Center, Mahdiyeh Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Hekmatnia
- Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehran Arab-Ahmadi
- Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Morteza Sanei-Taheri
- President of Iranian Society of Radiology, Tehran Iran; Professor of Radiology, Head of Department, Department of Radiology, Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Arash Azhideh
- Department of Radiology, Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
22
|
Karimi MA, Iliyat M, Atashkadi M, Ranjbar M, Habibi‐Yangjeh A. Microwave‐assisted synthesis of the
Fe
2
O
3
/
g‐C
3
N
4
nanocomposites with enhanced photocatalytic activity for degradation of methylene blue. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000068] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Maryam Iliyat
- Department of Chemistry Payame Noor University Tehran Iran
| | | | - Mehdi Ranjbar
- Pharmaceutics Research Center, Institute of Neuropharmacology Kerman University of Medical Sciences Kerman Iran
| | - Aziz Habibi‐Yangjeh
- Department of Chemistry, Faculty of Sciences University of Mohaghegh Ardabili Ardabil Iran
| |
Collapse
|
23
|
Hosseinzadeh A, Goudarzi M, Fatemi I, Khodayar MJ, Mehrzadi S, Khalili HR, Karimi MA. Gemfibrozil attenuates doxorubicin induced toxicity in renal tissues of male rats by reducing the oxidative insult and inflammation. Biotech Histochem 2020; 95:532-539. [PMID: 32242747 DOI: 10.1080/10520295.2020.1730967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 01/10/2023] Open
Abstract
Nephrotoxicity is a significant side effect of doxorubicin (DXN) treatment. We investigated the protective effect of gemfibrozil (GEM) co-administration with DXN on DXN induced nephrotoxicity. We divided 28 male Wistar rats into four groups of seven. Group 1 received normal saline for 2 weeks. Group 2 received 15 mg/kg DXN for 2 weeks. Group 3 received DXN + GEM for 2 weeks. Group 4 received GEM for 2 weeks. On day 15 of the experiment, blood samples were collected, animals were sacrificed and kidneys were excised for biochemical and histological evaluation. We measured serum creatinine, blood urine nitrogen, renal malondialdehyde, nitric oxide, glutathione, superoxide dismutase, glutathione peroxidase, catalase, tumor necrosis factor-α and interleukin-1β. GEM administration mitigated DXN induced nephrotoxicity. GEM co-administered with DXN attenuated the inflammatory and oxidative responses associated with DXN induced nephrotoxicity.
Collapse
Affiliation(s)
- Azam Hosseinzadeh
- Razi Drug Research Center, Iran University of Medical Sciences , Tehran, Iran
| | - Mehdi Goudarzi
- Medicinal Plant Research Center, Ahvaz Jundishapur University of Medical Sciences , Ahvaz, Iran
| | - Iman Fatemi
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences , Kerman, Iran
| | - Mohammad Javad Khodayar
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences , Ahvaz, Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center, Iran University of Medical Sciences , Tehran, Iran
| | - Hamid Reza Khalili
- Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences , Ahvaz, Iran
| | - Mohammad Ali Karimi
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences , Ahvaz, Iran
| |
Collapse
|
24
|
Sanei Taheri M, Falahati F, Radpour A, Karimi V, Sedaghat A, Karimi MA. Role of Social Media and Telemedicine in Diagnosis & Management of COVID-19; An Experience of the Iranian Society of Radiology. Arch Iran Med 2020; 23:285-286. [PMID: 32271607 DOI: 10.34172/aim.2020.15] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 03/22/2020] [Indexed: 01/19/2023]
Affiliation(s)
- Morteza Sanei Taheri
- Department of Radiology, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
25
|
Abdolhamid Hatefi-Mehrjardi, Karimi MA, Soleymanzadeh M, Barani A. Highly Sensitive Detection of Dopamine, Ascorbic and Uric Acids using Dianix Yellow/Multi-walled Carbon Nanotubes Modified Electrode. J Anal Chem 2020. [DOI: 10.1134/s1061934820030132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
26
|
Dadmehr M, Karimi MA, Korouzhdehi B. A signal-on fluorescence based biosensing platform for highly sensitive detection of DNA methyltransferase enzyme activity and inhibition. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117731. [PMID: 31753656 DOI: 10.1016/j.saa.2019.117731] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 05/31/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 06/10/2023]
Abstract
DNA methylation mediated by DNA methyltransferase (MTase) enzyme is internal cell mechanism which regulate the expression or suppression of crucial genes involve in cancer early diagnosis. Herein, highly sensitive fluorescence biosensing platform was developed for monitoring of DNA Dam MTase enzyme activity and inhibition based on fluorescence signal on mechanism. The specific Au NP functionalized oligonucleotide probe with overhang end as a template for the synthesis of fluorescent silver nanoclusters (Ag NCs) was designed to provide the FRET occurrence. Following, methylation and cleavage processes by Dam MTAse and DpnI enzymes respectively at specific probe recognition site could resulted to release of AgNCs synthesizer DNA fragment and returned the platform to fluorescence signal-on state through interrupting in FRET. Subsequently, amplified fluorescence emission signals of Ag NCs showed increasing linear relationship with amount of Dam MTase enzyme at the range of 0.1-20 U/mL and the detection limit was estimated at 0.05 U/mL. Superior selectivity of experiment was illustrated among other tested MTase and restriction enzymes due to the specific recognition of MTase toward its substrate. Furthermore, the inhibition effect of applied Dam MTase drug inhibitors screened and evaluated with satisfactory results which would be helpful for discovery of antimicrobial drugs. The real sample assay also showed the applicability of proposed method in human serum condition. This novel strategy presented an efficient and cost effective platform for sensitive monitoring of DNA MTase activity and inhibition which illustrated its great potential for further application in medical diagnosis and drug discovery.
Collapse
Affiliation(s)
- Mehdi Dadmehr
- Department of Biology, Payame Noor University, Tehran, Iran.
| | | | | |
Collapse
|
27
|
Asadzadeh-Aghdaei H, Moshari MR, Zandi R, Karimi MA, Salari S, Ketabi Moghadam P. An uncommon presentation of hepatic hydatid cyst leading to biliary cirrhosis and portal hypertension. Gastroenterol Hepatol Bed Bench 2020; 13:S145-S148. [PMID: 33585017 PMCID: PMC7881412] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydatid disease is an ongoing issue in endemic areas. Hydatid cysts can be seen in any organ but, liver is one of the most common involved organs. Cystobiliary communication as an overwhelming complication of hepatic hydatid cysts can contribute to the obstructive jaundice, cholangitis, sepsis and even biliary cirrhosis if left untreated. The patient we are trying to present is a 61-year-old farmer who presented with obstructive jaundice, multiple common bile duct stones and biliary cirrhosis attributed to a long-lasting untreated hepatic hydatid cyst. Portal hypertension is introduced to be an uncommon presentation of hydatid cyst. Extrinsic compression of the porta hepatis and obstruction of inferior vena cava are amongst major causes of hydatidosis leading up to portal hypertension as reported in the literature. Portal hypertension in the presented case is proposed to emerge from long-lasting cystobiliary communication ending in biliary cirrhosis.
Collapse
Affiliation(s)
- Hamid Asadzadeh-Aghdaei
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | | | - Reza Zandi
- Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Karimi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Sina Salari
- Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | |
Collapse
|
28
|
Sadeghi A, Zali MR, Mohaghegh Shalmani H, Ketabi Moghadam P, Rajabnia Chenari M, Karimi MA, Salari S, Asadzadeh-Aghdaei H. An algorithmic approach to gastrointestinal bleeding in patients receiving antithrombotic agents. Gastroenterol Hepatol Bed Bench 2020; 13:S8-S17. [PMID: 33584999 PMCID: PMC7881411] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Gastrointestinal bleeding is an overwhelming complication of patients taking antithrombotic agents. These drugs pose a challenge to physicians in the management of bleeding to establish hemostasis without putting these patients at a higher risk for thromboembolism. This study aims to propose an algorithmic approach to four major groups of patients receiving antithrombotic agents (single antiplatelet agents, dual antiplatelet agents, anticoagulants and direct oral anticoagulants) to decide when and how these drugs should be held or restarted to offset between the risk of re-bleeding and thromboembolism. Four case-based algorithms are proposed in this article based on some relevant articles. Having designed four case-based algorithms, we are hoping to guide physicians who face a dilemma on the management of patients receiving antithrombotics when gastrointestinal bleeding occurs. Patients using antithrombotics referred for gastrointestinal bleeding were stratified into four groups based on the medication which is used as an antithrombotic agent and four algorithms were designed which are presented here. We have made an attempt to have a stepwise approach to four cases relevant to the study and have an evaluation on the management of their antithrombotic agents during an episode of gastrointestinal bleeding. It is widely accepted that antithrombotic agents should be restarted as soon as possible after the establishment of hemostasis in a patient taking antithrombotics referring for gastrointestinal bleeding. The time for resuming these drugs is different based on the severity of bleeding, the probability of thromboembolic events, and the nature of the antithrombotic medication which is used by the patient.
Collapse
Affiliation(s)
- Amir Sadeghi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Mohaghegh Shalmani
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pardis Ketabi Moghadam
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Rajabnia Chenari
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Karimi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sina Salari
- Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Asadzadeh-Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
29
|
Peymani-Motlagh SM, Moeinian N, Rostami M, Fasihi-Ramandi M, Sobhani-Nasab A, Rahimi-Nasrabadi M, Eghbali-Arani M, Ganjali MR, Jesionowski T, Ehrlich H, Karimi MA, Ajami N. Effect of Gd3+-, Pr3+- or Sm3+-substituted cobalt–zinc ferrite on photodegradation of methyl orange and cytotoxicity tests. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2019.04.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
30
|
Dianat I, Adeli P, Asgari Jafarabadi M, Karimi MA. User-centred web design, usability and user satisfaction: The case of online banking websites in Iran. Appl Ergon 2019; 81:102892. [PMID: 31422242 DOI: 10.1016/j.apergo.2019.102892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 05/31/2017] [Revised: 11/06/2018] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
The relationship of Web design attributes (personalisation, structure, navigation, layout, search and performance) and users' personal characteristics to website usability and user satisfaction was investigated among 798 online banking users in Iran. The design and usability of the evaluated websites were not satisfactory from the users' perspectives. Multivariate regression models indicated that Web layout and performance were the main predictors of website usability, while personal characteristics including gender, age and Web usage experience of users had no effect. User satisfaction was also influenced only by the Web design attributes (particularly Web structure) and not by the personal characteristics of the users. There was also a significant relationship between website usability and user satisfaction. The findings suggest that the website designers should focus more on the Web design attributes (particularly Web layout and structure), regardless of the personal characteristics of their users, to improve the usability and user satisfaction of websites.
Collapse
Affiliation(s)
- Iman Dianat
- Department of Occupational Health and Ergonomics, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Pari Adeli
- Department of Occupational Health and Ergonomics, Tabriz University of Medical Sciences, Tabriz, Iran.
| | | | - Mohammad Ali Karimi
- Department of Computer Engineering, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
| |
Collapse
|
31
|
Tavallali H, Malekzadeh H, Karimi MA, Payehghadr M, Deilamy-Rad G, Tabandeh M. Chemically modified multiwalled carbon nanotubes as efficient and selective sorbent for separation and preconcentration of trace amount of Co(II), Cd(II), Pb(II), and Pd(II). ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.10.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
32
|
Tavallali H, Deilamy-Rad G, Karimi MA, Rahimy E. A novel dye-based colorimetric chemosensors for sequential detection of Cu2+ and cysteine in aqueous solution. Anal Biochem 2019; 583:113376. [DOI: 10.1016/j.ab.2019.113376] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 12/11/2022]
|
33
|
Ezoddin M, Adlnasab L, Afshari Kaveh A, Karimi MA, Mahjoob B. Development of air‐assisted dispersive micro‐solid‐phase extraction‐based supramolecular solvent‐mediated Fe
3
O
4
@Cu–Fe–LDH for the determination of tramadol in biological samples. Biomed Chromatogr 2019; 33:e4572. [DOI: 10.1002/bmc.4572] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/19/2019] [Accepted: 04/30/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Maryam Ezoddin
- Department of ChemistryPayame Noor University Tehran Iran
| | - Laleh Adlnasab
- Department of Chemistry and Polymer, Faculty of Chemistry and Petrochemical EngineeringStandard Research Institute Karaj Iran
| | | | | | - Behnaz Mahjoob
- Department of ChemistryUniversity of Environment Karaj Iran
| |
Collapse
|
34
|
Karimi MA, Masrouri H, Karami H, Andishgar S, Mirbagheri MA, Pourshamsi T. Highly efficient removal of toxic lead ions from aqueous solutions using a new magnetic metal‐organic framework nanocomposite. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800378] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Hassan Masrouri
- Department of Chemistry and Petrochemical EngineeringStandard Research Institute Karaj Iran
| | - Hassan Karami
- Department of ChemistryPayame Noor University Tehran Iran
| | | | | | | |
Collapse
|
35
|
Karimi MA, Dadmehr M, Hosseini M, Korouzhdehi B, Oroojalian F. Sensitive detection of methylated DNA and methyltransferase activity based on the lighting up of FAM-labeled DNA quenched fluorescence by gold nanoparticles. RSC Adv 2019; 9:12063-12069. [PMID: 35516994 PMCID: PMC9063544 DOI: 10.1039/c9ra01564g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 03/01/2019] [Accepted: 04/04/2019] [Indexed: 12/27/2022] Open
Abstract
DNA methylation of cytosine bases, which is catalyzed by methyltransferase enzymes, involve biochemical processes that contribute to gene expression and gene regulation in cells. Detection of abnormal patterns of both methylated DNA and methyltransferase enzyme activity at early stages could be considered as promising targets for early cancer diagnosis. In the present study, a novel and facile method is introduced for the sensitive detection of the M.SssI methyltransferase (M.SssI MTase) enzyme and methylated DNA based on the fluorescence recovery of FAM-labeled DNA coupled with gold nanoparticles (AuNPs). Thiol-modified probes were functionalized with AuNPs, which brought the FAM fluorophore into the close proximity of the AuNPs. This led to the overlap between the FAM fluorescence emission and AuNPs absorption spectra, introducing a FRET occurrence and causing fluorescence quenching. The hybridization of the probe and its complementary target provided specific CpG sites for M.SssI MTase enzyme activity. The methylation process gradually converted the quenched FAM fluorophore into an emissive fluorophore upon the addition of the MTase enzyme, and the observed fluorescence recovery proved the efficiency of the assay for the detection of MTase enzyme. The fluorescence intensity showed an increasing trend with M.SssI MTase enzyme activity in the range of 1–8 U mL−1 with a detection limit of 0.14 U mL−1. The addition of methylated ssDNA targets to a ssDNA FAM-labeled probe resulted in a DNA duplex formation, leading to a strong fluorescence signal emission due to the recovery of the fluorophore signal. Conversely, the unmethylated ssDNA target caused no changes in the fluorescence signal. In the presence of methylated DNA targets, the biosensor could specifically recognize it and accordingly trigger the methylated targets through a fluorescence enhancement in the range of 5–100 pM by monitoring the increase in the fluorescence intensity with a detection limit of 2.2 pM. The obtained results showed that the assay could realize the detection of M.SssI MTase and methylated DNA effectively in diluted human serum samples. Human serum conditions showed no significant interference with the assay performance, indicating that the present method has great potential for further application in real samples. A novel method for detection of DNA methylation based on fluorescence recovery of FAM labeled DNA/Au NPs was introduced.![]()
Collapse
Affiliation(s)
| | - Mehdi Dadmehr
- Department of Biology
- Payame Noor University
- Tehran
- Iran
| | - Morteza Hosseini
- Department of Life Science Engineering
- Faculty of New Sciences & Technologies
- University of Tehran
- Tehran
- Iran
| | | | - Fatemeh Oroojalian
- Department of Advanced Sciences and Technologies
- School of Medicine
- North Khorasan University of Medical Sciences
- Bojnurd
- Iran
| |
Collapse
|
36
|
Ezoddin M, Adlnasab L, Kaveh AA, Karimi MA. Ultrasonically formation of supramolecular based ultrasound energy assisted solidification of floating organic drop microextraction for preconcentration of methadone in human plasma and saliva samples prior to gas chromatography-mass spectrometry. Ultrason Sonochem 2019; 50:182-187. [PMID: 30287181 DOI: 10.1016/j.ultsonch.2018.09.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 07/10/2018] [Revised: 09/12/2018] [Accepted: 09/15/2018] [Indexed: 06/08/2023]
Abstract
In this work, an ultrasonic-assisted supramolecular based on solidification of floating organic drop microextraction (UA-SM-SFO-ME) was developed as a green method for preconcentration of methadone prior to gas chromatography-mass spectrometry (GC-MS). The supramolecular solvent aggregates containing reverse micelles of 1-dodecanol in tetrahydrofuran (THF) were formed by ultrasonication that subsequently dispersed in the sample solution. Ultrasonic waves caused the fast formation of supramolecular solvent aggregates. In this work, ultrasonication was used in two phases: First phase, the formation of reverse micelles and the second phase, the dispersion of supramolecular solvent in the sample solution. Actually, ultrasonication was basic of this presented work. In order to provide the highest extraction efficiency, the influence of various parameters on the method performance (supramolecular solvent type and volume, disperser solvent condition, pH, extraction time and salt concentration) was investigated. Based on the obtained optimum conditions, the limits of detection (LODs) and the limits of quantitation (LOQs) were obtained 0.5-1.2 µg L-1 and 1.2-2.5 µg L-1 with preconcentration factors in the range of 182-191, in water and biological samples, respectively. Subsequently, the method was assessed for preconcentration of the methadone in human plasma and saliva samples.
Collapse
Affiliation(s)
- Maryam Ezoddin
- Department of Chemistry, Payame Noor University, P.O. Box: 19395-3697, Tehran, Iran
| | - Laleh Adlnasab
- Department of Chemistry and Polymer, Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute, P.O. Box: 31745-139, Karaj, Iran.
| | - Akram Afshari Kaveh
- Department of Chemistry, Payame Noor University, P.O. Box: 19395-3697, Tehran, Iran
| | - Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University, P.O. Box: 19395-3697, Tehran, Iran
| |
Collapse
|
37
|
Ezoddin M, Lamei N, Siami F, Abdi K, Karimi MA. Deep Eutectic Solvent Based Air Assisted Ligandless Emulsification Liquid-Liquid Microextraction for Preconcentration of Some Heavy Metals in Biological and Environmental Samples. Bull Environ Contam Toxicol 2018; 101:814-819. [PMID: 30269222 DOI: 10.1007/s00128-018-2456-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 07/08/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
In this study, a deep eutectic solvent (DES) based on air-assisted ligandless emulsification liquid-liquid microextraction method (DES-AA-LL-ELLME) was considered for preconcentration and extraction of some metals (Cd, Ni, Pb and Cu). A 1:1 mixture of the synthesized DES and triethylamine was added as an extractant to extract metal ions in the absence of chelating agent. Tetrahydrofuran as the aprotic solvent provided a turbid state. To disperse the aggregated DES droplets into the aqueous phase, air-assisted was performed. The influence of several effective parameters was monitored. Under optimum conditions, limits of detection were found in the range of 0.31-0.99 µg L-1 with preconcentration factor from 67 to 69. The relative standard deviation (n = 10) was in the range of 2.1%-3.1% for all analytes. This procedure was applied to determine some metals in both biological and environmental samples with appropriate recoveries about 98.7%-106%.
Collapse
Affiliation(s)
- Maryam Ezoddin
- Department of Chemistry, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran
| | - Navid Lamei
- Drug Design and Development Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medicinal Chemistry and Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Siami
- Department of Chemistry, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran
| | - Khosrou Abdi
- Drug Design and Development Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Medicinal Chemistry and Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran
| |
Collapse
|
38
|
Karimi MA, Masrouri H, Mirbagheri MA, Andishgar S, Pourshamsi T. Synthesis of a new magnetic metal-organic framework nanocomposite and its application in methylene blue removal from aqueous solution. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Hassan Masrouri
- Department of Chemistry and Petrochemical Engineering; Standard Research Institute; Karaj Iran
| | | | - Saeed Andishgar
- Department of Chemistry; Payame Noor University; Tehran Iran
| | | |
Collapse
|
39
|
Karimi MA, Aghaei VH, Nezhadali A, Ajami N. Graphitic Carbon Nitride as a New Sensitive Material for Electrochemical Determination of Trace Amounts of Tartrazine in Food Samples. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1264-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
40
|
Adlnasab L, Ezoddin M, Karimi MA, Hatamikia N. MCM-41@Cu–Fe–LDH magnetic nanoparticles modified with cationic surfactant for removal of Alizarin Yellow from water samples and its determination with HPLC. Res Chem Intermed 2018. [DOI: 10.1007/s11164-018-3304-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Pourbasheer E, Morsali S, Azari Z, Karimi MA, Ganjali MR. Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4110] [Citation(s) in RCA: 4] [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: 11/06/2022]
Affiliation(s)
- Eslam Pourbasheer
- Department of ChemistryPayame Noor University (PNU) PO Box 19395‐3697 Tehran Iran
| | - Somayeh Morsali
- Department of ChemistryPayame Noor University (PNU) PO Box 19395‐3697 Tehran Iran
| | - Zhila Azari
- Department of ChemistryPayame Noor University (PNU) PO Box 19395‐3697 Tehran Iran
| | - Mohammad Ali Karimi
- Department of ChemistryPayame Noor University (PNU) PO Box 19395‐3697 Tehran Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in ElectrochemistryUniversity of Tehran Tehran Iran
- Biosensor Research Center, Endocrinology and Metabolism Molecular‐Cellular Sciences InstituteTehran University of Medical Sciences Tehran Iran
| |
Collapse
|
42
|
Ali Karimi M. Sensitive Electrochemical Detection of Dopamine, Uric and Ascorbic Acids Based on poly-(Dianix Yellow) Film Modified Electrode. INT J ELECTROCHEM SC 2017. [DOI: 10.20964/2017.08.16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
43
|
Hatefi-Mehrjardi A, Karimi MA, Barani A, Soleymanzadeh M. Poly-Dianix Blue/Multi-Walled Carbon Nanotube Modified Electrode for Detection of Levodopa in the Presence of High Concentrations of Ascorbic and Uric Acids. Acta Chim Slov 2017; 64:193-201. [PMID: 28380228 DOI: 10.17344/acsi.2016.3097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A selective and sensitive electrochemical sensor was studied for determination of levodopa (LD) in the presence of uric acid (UA) and ascorbic acid (AA) using poly-dianix blue and multi-walled carbon nanotubes (PDB/MWCNTs) modified glassy carbon electrode. Cyclic voltammetry, differential pulse voltammetry, and chronoamperometry methods were applied to investigate the electrocatalytic oxidation of LD, UA and AA in aqueous solutions. By DPV technique, LD, UA and AA give oxidation peaks at 0.380, 0.520 and 0.180 V, respectively. Under the optimized experimental conditions LD, UA and AA give a linear response in the range of 0.09-75 μmol L-1, 0.3-110 μmol L-1 and 10-160 μmol L-1, respectively. Accordingly, the obtained detection limits were 0.003, 0.002 and 0.023 μmol L-1. The method provides a simple electrochemical sensor for successful determination of LD in human blood serum samples.
Collapse
|
44
|
Karimi MA, Ranjbar M, Salmanipour A. Novel solvothermal synthesis and characterization of Ag2S/PbSO4 nanocomposites. Journal of Saudi Chemical Society 2017. [DOI: 10.1016/j.jscs.2015.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
45
|
Abstract
Objectives: This study was conducted to determine the prevalence of musculoskeletal symptoms and associated risk factors among Iranian handicraft workers engaged in different hand sewing tasks. Methods: Data were collected using questionnaires (including the Nordic Musculoskeletal Questionnaire) as well as direct observations of posture (using the Rapid Upper Limb Assessment [RULA] method) from 632 workers including carpet handicraft workers (n=222), textiles handicraft workers (n=209), and leather handicraft workers (n=201) in Tabriz, Iran. Results: The response rate was 88.8%. The overall prevalence of musculoskeletal complaints, particularly in the neck (57.9%), lower back (51.6%), and shoulders (40.5%) was relatively high. The prevalence of neck and shoulder pain was higher among females and with increasing age. Working posture and fast working were associated with neck, shoulder, and lower back pain. Years worked as a sewing worker was associated with neck and lower back pain. Long duration of continuous sitting work (>2 h) without a break was associated with neck pain. Body mass index, marital status, sport/physical activity, smoking, daily working hours, job satisfaction, and perceived pressure due to work had no effect. Conclusions: The findings indicate a high prevalence of musculoskeletal pain among the studied handicraft workers and emphasize the importance of individual, physical, and psychosocial aspects of hand sewing tasks in this regard.
Collapse
Affiliation(s)
- Iman Dianat
- Department of Occupational Health, Faculty of Health, Tabriz University of Medical Sciences
| | | |
Collapse
|
46
|
Karimi MA, Ranjbar M, Behzadi Z. Preparation of magnetic molecularly imprinted nanoparticles for selective separation and determination of prednisolone drug. INORG NANO-MET CHEM 2016. [DOI: 10.1080/15533174.2016.1186056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Mohammad Ali Karimi
- Department of Chemistry, Payame Noor University, Tehran, Iran
- Department of Chemistry & Nanoscience and Nanotechnology Research Laboratory (NNRL), Payame Noor University, Sirjan, Iran
| | - Mehdi Ranjbar
- Young Researchers and Elite Club, Kerman Branch, Islamic Azad University, Kerman, Iran
| | - Zohre Behzadi
- Department of Chemistry & Nanoscience and Nanotechnology Research Laboratory (NNRL), Payame Noor University, Sirjan, Iran
| |
Collapse
|
47
|
Karimi MA, Bahoosh SG, Valášek M, Bürkle M, Mayor M, Pauly F, Scheer E. Identification of the current path for a conductive molecular wire on a tripodal platform. Nanoscale 2016; 8:10582-10590. [PMID: 27163116 DOI: 10.1039/c5nr08708b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present the chemical synthesis as well as charge transport measurements and calculations for a new tripodal platform based on a rigid 9,9'-spirobifluorene equipped with a phenylene-ethynylene wire. The transport experiments are performed with the help of the low-temperature mechanically controlled break junction technique with gold electrodes. By combining experimental and theoretical investigations of elastic and inelastic charge transport, we show that the current proceeds through the designated molecular wire and identify a binding geometry that is compatible with the experimental observations. The conductive molecular wire on the platform features a well-defined and relatively high conductance of the order of 10(-3)G0 despite the length of the current path of more than 1.7 nm, demonstrating that this platform is suitable to incorporate functional units like molecular switches or sensors.
Collapse
Affiliation(s)
- M A Karimi
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
| | - S G Bahoosh
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
| | - M Valášek
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - M Bürkle
- Nanosystem Research Institute (NRI) 'RICS', National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
| | - M Mayor
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, P.O. Box 3640, 76021 Karlsruhe, Germany and Department of Chemistry, University of Basel, 4056 Basel, Switzerland and Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University (SYSU), Xingang Rd. W., Guangzhou, China
| | - F Pauly
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
| | - E Scheer
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
| |
Collapse
|
48
|
Abstract
We report measurements of the shot noise on single-molecule Au-1,4-benzenedithiol-Au junctions, fabricated with the mechanically controllable break junction (MCBJ) technique at 4.2 K in a wide range of conductance values from 10(-2) to 0.24 conductance quanta. We introduce a simple measurement scheme using a current amplifier and a spectrum analyzer and that does not imply special requirements regarding the electrical leads. The experimental findings provide evidence that the current is carried by a single conduction channel throughout the whole conductance range. This observation suggests that the number of channels is limited by the Au-thiol bonds and that contributions due to direct tunneling from the Au to the π-system of the aromatic ring are negligible also for high conductance. The results are supported by quantum transport calculations using density functional theory.
Collapse
Affiliation(s)
- M A Karimi
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
| | - S G Bahoosh
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
| | - M Herz
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
| | - R Hayakawa
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science , 1-1 Namiki, Tsukuba 305-0044, Japan
| | - F Pauly
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
| | - E Scheer
- Department of Physics, University of Konstanz , 78457 Konstanz, Germany
| |
Collapse
|
49
|
Karimi MA, Mozaheb MA, Hatefi-Mehrjardi A, Tavallali H, Attaran AM, Shamsi R. A new simple method for determining the critical micelle concentration of surfactants using surface plasmon resonance of silver nanoparticles. J Anal Sci Technol 2015. [DOI: 10.1186/s40543-015-0077-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
50
|
Karimi MA, Kafi M. Removal, preconcentration and determination of Ni(II) from different environmental samples using modified magnetite nanoparticles prior to flame atomic absorption spectrometry. ARAB J CHEM 2015. [DOI: 10.1016/j.arabjc.2013.05.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|