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Zangi AR, Amiri A, Pazooki P, Soltanmohammadi F, Hamishehkar H, Javadzadeh Y. Non-viral and viral delivery systems for hemophilia A therapy: recent development and prospects. Ann Hematol 2024; 103:1493-1511. [PMID: 37951852 DOI: 10.1007/s00277-023-05459-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/17/2023] [Indexed: 11/14/2023]
Abstract
Recent advancements have focused on enhancing factor VIII half-life and refining its delivery methods, despite the well-established knowledge that factor VIII deficiency is the main clotting protein lacking in hemophilia. Consequently, both viral and non-viral delivery systems play a crucial role in enhancing the quality of life for hemophilia patients. The utilization of viral vectors and the manipulation of non-viral vectors through targeted delivery are significant advancements in the field of cellular and molecular therapies for hemophilia. These developments contribute to the progression of treatment strategies and hold great promise for improving the overall well-being of individuals with hemophilia. This review study comprehensively explores the application of viral and non-viral vectors in cellular (specifically T cell) and molecular therapy approaches, such as RNA, monoclonal antibody (mAb), and CRISPR therapeutics, with the aim of addressing the challenges in hemophilia treatment. By examining these innovative strategies, the study aims to shed light on potential solutions to enhance the efficacy and outcomes of hemophilia therapy.
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Affiliation(s)
- Ali Rajabi Zangi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran
| | - Ala Amiri
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Pouya Pazooki
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Soltanmohammadi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran
| | - Yousef Javadzadeh
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran.
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Hatami Z, Hashemi ZS, Eftekhary M, Amiri A, Karpisheh V, Nasrollahi K, Jafari R. Natural killer cell-derived exosomes for cancer immunotherapy: innovative therapeutics art. Cancer Cell Int 2023; 23:157. [PMID: 37543612 PMCID: PMC10403883 DOI: 10.1186/s12935-023-02996-6] [Citation(s) in RCA: 3] [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] [Received: 02/05/2023] [Accepted: 07/19/2023] [Indexed: 08/07/2023] Open
Abstract
Chimeric antigen receptor natural killer cells (CAR-NK) promote off-the-shelf cellular therapy for solid tumors and malignancy.However,, the development of CAR-NK is due to their immune surveillance uncertainty and cytotoxicity challenge was restricted. Natural killer cell-derived exosome (NK-Exo) combine crucial targeted cellular therapies of NK cell therapies with unique non-toxic Exo as a self-origin shuttle against cancer immunotherapy. This review study covers cytokines, adoptive (autologous and allogenic) NK immunotherapy, stimulatory and regulatory functions, and cell-free derivatives from NK cells. The future path of NK-Exo cytotoxicity and anti-tumor activity with considering non-caspase-independent/dependent apoptosis and Fas/FasL pathway in cancer immunotherapy. Finally, the significance and implication of NK-Exo therapeutics through combination therapy and the development of emerging approaches for the purification and delivery NK-Exo to severe immune and tumor cells and tissues were discussed in detail.
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Affiliation(s)
- Zahra Hatami
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zahra Sadat Hashemi
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
| | - Mohamad Eftekhary
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Ala Amiri
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Vahid Karpisheh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kaveh Nasrollahi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza Jafari
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran.
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Luisi CA, Amiri A, Büsen M, Sichermann T, Nikoubashman O, Wiesmann M, Steinseifer U, Müller M, Neidlin M. Investigation of Cerebral Hemodynamics During Endovascular Aspiration: Development of an Experimental and Numerical Setup. Cardiovasc Eng Technol 2023; 14:393-403. [PMID: 36814059 PMCID: PMC10412675 DOI: 10.1007/s13239-023-00660-8] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 02/06/2023] [Indexed: 02/24/2023]
Abstract
PURPOSE Acute ischemic stroke is a life-threatening emergency caused by an occlusion of a cerebral artery through a blood clot. Aspiration thrombectomy is an endovascular therapy for the removal of vessel occlusions. However, open questions regarding the hemodynamics during the intervention remain, motivating investigations of blood flow within cerebral arteries. In this study, we present a combined experimental and numerical approach to analyze hemodynamics during endovascular aspiration. METHODS We have developed an in vitro setup for investigations of hemodynamic changes during endovascular aspiration within a compliant model of patient-specific cerebral arteries. Pressures, flows, and locally resolved velocities were obtained. In addition, we established a computational fluid dynamics (CFD) model and compared the simulations during physiological conditions and in two aspiration scenarios with different occlusions. RESULTS Flow redistribution within cerebral arteries after ischemic stroke is strongly dependent on the severity of the occlusion and on the volume flow extracted by endovascular aspiration. Numerical simulations exhibit an excellent correlation of R = 0.92 for flow rates and a good correlation of R = 0.73 for pressures. Further on, the local velocity field inside the basilar artery had a good agreement between CFD model and particle image velocimetry (PIV) data. CONCLUSION The presented setup allows for in vitro investigations of artery occlusions and endovascular aspiration techniques on arbitrary patient-specific cerebrovascular anatomies. The in silico model provides consistent predictions of flows and pressures in several aspiration scenarios.
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Affiliation(s)
- C A Luisi
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany
| | - A Amiri
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany
| | - M Büsen
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany
| | - T Sichermann
- Clinic for Diagnostic and Interventional Neuroradiology, University Hospital Aachen, Pauwelsstr. 30, 52074, Aachen, Germany
| | - O Nikoubashman
- Clinic for Diagnostic and Interventional Neuroradiology, University Hospital Aachen, Pauwelsstr. 30, 52074, Aachen, Germany
| | - M Wiesmann
- Clinic for Diagnostic and Interventional Neuroradiology, University Hospital Aachen, Pauwelsstr. 30, 52074, Aachen, Germany
| | - U Steinseifer
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany
| | - M Müller
- Clinic for Diagnostic and Interventional Neuroradiology, University Hospital Aachen, Pauwelsstr. 30, 52074, Aachen, Germany
| | - M Neidlin
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany.
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Zangi AR, Amiri A, Borzouee F, Bagherifar R, Pazooki P, Hamishehkar H, Javadzadeh Y. Immobilized nanoparticles-mediated enzyme therapy; promising way into clinical development. Discov Nano 2023; 18:55. [PMID: 37382752 PMCID: PMC10409955 DOI: 10.1186/s11671-023-03823-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/06/2023] [Indexed: 06/30/2023]
Abstract
Enzyme (Enz)-mediated therapy indicated a remarkable effect in the treatment of many human cancers and diseases with an insight into clinical phases. Because of insufficient immobilization (Imb) approach and ineffective carrier, Enz therapeutic exhibits low biological efficacy and bio-physicochemical stability. Although efforts have been made to remove the limitations mentioned in clinical trials, efficient Imb-destabilization and modification of nanoparticles (NPs) remain challenging. NP internalization through insufficient membrane permeability, precise endosomal escape, and endonuclease protection following release are the primary development approaches. In recent years, innovative manipulation of the material for Enz immobilization (EI) fabrication and NP preparation has enabled nanomaterial platforms to improve Enz therapeutic outcomes and provide low-diverse clinical applications. In this review article, we examine recent advances in EI approaches and emerging views and explore the impact of Enz-mediated NPs on clinical therapeutic outcomes with at least diverse effects.
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Affiliation(s)
- Ali Rajabi Zangi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ala Amiri
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Fatemeh Borzouee
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rafieh Bagherifar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pouya Pazooki
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran
| | - Yousef Javadzadeh
- Biotechnology Research Center, and Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran.
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Amiri A, Bagherifar R, Ansari Dezfouli E, Kiaie SH, Jafari R, Ramezani R. Exosomes as bio-inspired nanocarriers for RNA delivery: preparation and applications. J Transl Med 2022; 20:125. [PMID: 35287692 PMCID: PMC8919142 DOI: 10.1186/s12967-022-03325-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 03/01/2022] [Indexed: 12/12/2022] Open
Abstract
Nanocarriers as drug/biomolecule delivery systems have been significantly developed during recent decades. Given the stability, reasonable delivery efficiency, and safety of nanocarriers, there are several barriers in the fulfillment of successful clinical application of these delivery systems. These challenges encouraged drug delivery researchers to establish innovative nanocarriers with longer circulation time, high stability, and high compatibility. Exosomes are extracellular nanometer-sized vesicles released through various cells. These vesicles serve as nanocarriers, possessing great potential to overcome some obstacles encountered in gene and drug delivery due to their natural affinity to recipient cells and the inherent capability to shuttle the genes, lipids, proteins, and RNAs between cells. So far, there has been a lot of valuable research on drug delivery by exosomes, but research on RNA delivery, especially mRNA, is very limited. Since mRNA-based vaccines and therapies have recently gained particular prominence in various diseases, it is essential to find a suitable delivery system due to the large size and destructive nature of these nucleic acids. That's why we're going to take a look at the unique features of exosomes and their isolation and loading methods, to embrace this idea that exosome-mediated mRNA-based therapies would be introduced as a very efficient strategy in disease treatment within the near future.
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Affiliation(s)
- Ala Amiri
- Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Rafieh Bagherifar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ehsan Ansari Dezfouli
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Seyed Hossein Kiaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Jafari
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Shafa St, Ershad Blvd., P.O. Box: 1138, 57147, Urmia, Iran.
| | - Reihaneh Ramezani
- Department of Biomedical Sciences, Women Research Center, Alzahra University, 1993893973, Tehran, Iran.
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Amiri A, Abbasi A, Dehghani M, Ramezani A, Ramezani F, Zal F, Mostafavi-Pour Z. New perspectives of quercetin and vitamin C effects on fibronectin-binding integrins and chemokine receptors in prostate cancer cell lines. ACTA ACUST UNITED AC 2021; 122:507-512. [PMID: 34161119 DOI: 10.4149/bll_2021_082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES The aim of this study is to investigate the effect of two abundant dietary supplements, quercetin and vitamin C on some factors involved in metastasis and proliferation of prostate cancer, which are resistant to conventional chemotherapies in late stages. BACKGROUND Bone and brain are two common sites of metastases in prostate cancer, nevertheless the factors involved in their metastatic pathways are not well understood. METHODS The effect of quercetin (75µM) and vitamin C (100 µM) on CXCR4, CXCR7 chemokine receptors, α4, α5 and β1 integrins, ki-67 proliferation marker and Vascular endothelial growth factor, VEGF was evaluated using Quantitative Reverse Transcription PCR (RT-qPCR). RESULTS The effect of quercetin and vitamin C alone was different on PC3 and DU145 prostate cancer cell lines, but sequential combination reduced significantly the expression of CXCR and CXCR7 chemokine receptors, α4, α5 and β1 integrin subunits, VEGF and Ki-67 proliferation markers in PC3 and DU145 cell lines. CONCLUSION Our results indicated the beneficial effect of quercetin and vitamin C on prostate cancer cells with different metastatic sites and their differential response to the treatment which in turn may lead us to reach suitable therapeutic outcomes to combat cancer (Fig. 3, Ref. 36).
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Abstract
Phacidium lacerum (anamorph Ceuthospora pinastri) is a recently reported quarantine fungal pathogen responsible for postharvest rot in apples and pears. Very little is known about its pathogenicity, epidemiology, and best management practices. We screened pathogenicity of P. lacerum on twigs from seven and fruit from nine major commercial apple cultivars. Among the nine cultivars tested, detached fruit of Honeycrisp and Gala cultivars were the most susceptible, whereas WA38 (Cosmic Crisp) was the least susceptible (P < 0.05). Effective concentrations to inhibit 50% growth (EC50) were determined in 41 baseline P. lacerum isolates. The mean EC50 values for four postharvest fungicides, i.e., fludioxonil (FDL), difenoconazole (DIF), thiabendazole (TBZ), and pyrimethanil (PYRI) were 0.16, 0.38, 0.54, and 0.72 µg/ml, respectively. The mean EC50 values for four preharvest fungicides, i.e., pyraclostrobin (PYRA), fluxapyroxad (FLUX), boscalid (BOSC), and fluopyram (FLUP) were 0.96, 12.64, 16.54, and 44.46 µg/ml, respectively. In situ efficacy trials were conducted on detached Gala apples treated preventively and curatively with the aforementioned fungicides. After 6 months of storage at 1°C, FDL and DIF provided full control followed by TBZ and PYRI, whereas the other preharvest fungicides provided fair or low efficacies. Findings of this study shed light on pathogenicity of this emerging pathogen and provide necessary knowledge for effective management of Phacidium rot.
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Affiliation(s)
- I K Ozturk
- Washington State University, Department of Plant Pathology, Tree Fruit Research and Extension Center, Wenatchee, WA 98801
| | - A Amiri
- Washington State University, Department of Plant Pathology, Tree Fruit Research and Extension Center, Wenatchee, WA 98801
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Mahdinloo S, Kiaie SH, Amiri A, Hemmati S, Valizadeh H, Zakeri-Milani P. Efficient drug and gene delivery to liver fibrosis: rationale, recent advances, and perspectives. Acta Pharm Sin B 2020; 10:1279-1293. [PMID: 32874828 PMCID: PMC7451940 DOI: 10.1016/j.apsb.2020.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 12/15/2019] [Revised: 02/22/2020] [Accepted: 02/28/2020] [Indexed: 12/17/2022] Open
Abstract
Liver fibrosis results from chronic damages together with an accumulation of extracellular matrix, and no specific medical therapy is approved for that until now. Due to liver metabolic capacity for drugs, the fragility of drugs, and the presence of insurmountable physiological obstacles in the way of targeting, the development of efficient drug delivery systems for anti-fibrotics seems vital. We have explored articles with a different perspective on liver fibrosis over the two decades, then collected and summarized the information by providing corresponding in vitro and in vivo cases. We have discussed the mechanism of hepatic fibrogenesis with different ways of fibrosis induction in animals. Furthermore, the critical chemical and herbal anti-fibrotics, biological molecules such as micro-RNAs, siRNAs, and growth factors, which can affect cell division and differentiation, are mentioned. Likewise, drug and gene delivery and therapeutic systems on in vitro and in vivo models are summarized in the data tables. This review article enlightens recent advances in emerging drugs and nanocarriers and represents perspectives on targeting strategies employed in liver fibrosis treatment.
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Affiliation(s)
- Somayeh Mahdinloo
- Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz 5166616471, Iran
| | - Seyed Hossein Kiaie
- Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz 5166616471, Iran
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
| | - Ala Amiri
- Faculty of Basic Sciences, Islamic Azad University, Science and Research Branch, Tehran 1477893855, Iran
| | - Salar Hemmati
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz 5166616471, Iran
| | - Hadi Valizadeh
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 5166616471, Iran
| | - Parvin Zakeri-Milani
- Liver and Gastrointestinal Diseases Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 5166616471, Iran
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Ahmadi E, Mardani K, Amiri A. Molecular Detection and Antimicrobial Resistance Patterns of Shiga Toxigenic Escherichia coli Isolated from Bovine Subclinical Mastitis Milk Samples in Kurdistan, Iran. Arch Razi Inst 2020; 75:169-177. [PMID: 32621445 DOI: 10.22092/ari.2019.124238.1278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 06/16/2019] [Indexed: 09/30/2022]
Abstract
Bovine subclinical mastitis is regarded as a devastating disease due to the economic costs imposed on dairy husbandry. Moreover, it is a hazard in the public sector in the cases of zoonotic bacteria because of the potential role of unpasteurized milk and dairy products to propagate the infectious agent to the human food chain. The present study aimed to evaluate the frequency, virulence content, and antimicrobial resistance profile of Shiga toxin-producing Escherichia coli (STEC) strains isolated from bovine subclinical mastitis in Kurdistan Province, West of Iran. A total of 400 bovine subclinical mastitis milk samples recognized in the California Mastitis Test were collected aseptically and analyzed for the presence of E. coli phenotypically and molecularly. The isolates were genotypically screened for stx1, stx2, and eae genes. Furthermore, O157:H7 STEC strain was searched among the isolates in a duplex polymerase chain reaction. The antimicrobial resistance scheme of the isolates was determined using the agar disk diffusion method. In general, 173 (43.25%) E. coli isolates were detected among which 39 (22.54%) isolates were STEC. The frequency of STEC virulence genotypes was stx2 (25 isolates, 64.10%), stx2+eae (6 isolates, 15.38%), stx1+stx2 (6 isolates, 15.38%), and stx1+stx2+eae (2 isolates, 5.12%). In addition, three O157: H7 strains were identified with the genetic content of stx1+stx2+eae (2 isolates) and stx1+stx2 (1 isolate). The most prevalent antimicrobial resistance was observed against streptomycin, tetracycline, and ampicillin. Gentamycin, amoxicillin-clavulanic acid, and trimethoprim-sulfadiazine were the most effective antibiotics against O157 strains, whereas gentamycin, ciprofloxacin, and nitrofurantoin were effective against non-O157 strains. The results revealed the significant role of STEC in bovine subclinical mastitis in the studied region. In addition, the distribution of O157:H7 strain and high prevalence of multidrug resistance among the isolates is a matter of concern. Therefore, there is a potential threat of human infection following the consumption of contaminated milk with STEC in Kurdistan Province, Iran.
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Affiliation(s)
- E Ahmadi
- Department of Pathobiology, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran.,Department of Pathobiology, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
| | - K Mardani
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - A Amiri
- Department of Basic Sciences, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
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Amiri A, Zandi H, Mozaffari Khosravi H. Effect of Electron Beam Irradiation on Survival of Escherichia coli O157:H7 and Salmonella enterica serovar Thyphimurium in Minced Camel Meat during Refrigerated Storage. JFQHC 2019. [DOI: 10.18502/jfqhc.6.4.1996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Electron beam irradiation is one of the effective ways to control foodborne pathogens. We evaluated the effect of electron beam irradiation on survival of Escherichia coli O157:H7 and Salmonella enterica serovar Thyphimurium in minced camel meat during refrigerated storage. Methods: The meat samples were inoculated with E. coli O157:H7 and S. enterica serovar Thyphimurium and then irradiated with doses of 0, 1, 2, 3, and 5 kGy. The samples were stored at 4±1 °C and evaluated microbiologically up to 10 days. Data were analyzed using SPSS software version 18. Results: The microbial loads of minced camel meat samples were significantly reduced (p<0.0001) with increasing the dose of irradiation. The most effective dose was 5 kGy that highly reduced S. enterica serovar Typhimurium, and completely destroyed E. coli O157:H7. However, E. coli O157:H7 was more sensitive to electron beam irradiation than S. enterica serovar Typhimurium. Conclusion: Electron beam irradiation effectively reduced the population of both E. coli O157:H7 and S. enterica serovar Typhimurium in minced camel meat in a dose dependent manner.
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Amiri A, Zuniga AI, Peres NA. Potential Impact of Populations Drift on Botrytis Occurrence and Resistance to Multi- and Single-Site Fungicides in Florida Southern Highbush Blueberry Fields. Plant Dis 2018; 102:2142-2148. [PMID: 30169135 DOI: 10.1094/pdis-11-17-1810-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Incidence of blossom blight and Botrytis fruit rot (BFR), caused by Botrytis cinerea, on two southern highbush blueberry cultivars was evaluated in several blueberry fields grown in the vicinity (BB-Str(+)) or not (BB-Str(-)) of strawberry fields in central Florida. Blossom blight and BFR incidence were higher in BB-Str(+) fields in 2014 and significantly higher in 2015 compared to BB-Str(-) fields. In total, 613 B. cinerea isolates (i.e., 181 and 432 isolates from BB-Str(-) and BB-Str(+) fields, respectively) were collected. The isolates were evaluated for sensitivity to eight single-site and one multisite fungicides using a spore germination and a germ tube elongation assay. Overall, 5, 15, 24, 28, 54, and 93% of isolates collected from BB-Str(-) were resistant to penthiopyrad, cyprodinil, boscalid, fenhexamid, pyraclostrobin, and thiophanate-methyl, respectively. Respective resistance frequencies in BB-Str(+) isolates were 10, 30, 65, 66, 89, and 99%. Resistance frequencies for all fungicides were always higher in BB-Str(+) fields compared to BB-Str(-) fields. Isolates exhibiting resistance to six or five fungicides simultaneously were predominant (50 to 70%) in blueberry fields regardless if they were grown in the vicinity of strawberry fields or not. Among 308 and 305 B. cinerea isolates tested in 2014 and 2015, 41.8 and 47.1%, respectively, showed reduced sensitivity to the multisite fungicide captan. The lower label rate of captan applied preventively did not control isolates with reduced sensitivity on detached blueberry fruit. These findings suggest a potential population flow between strawberry and blueberry fields that may impact blossom blight and gray mold development in blueberry fields. The relatively lower fungicide input applied to blueberry fields compared with strawberry fields seems to be sufficient to select for resistance and multiple-resistant phenotypes in B. cinerea populations in blueberry.
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Affiliation(s)
- A Amiri
- Department of Plant Pathology, Tree Fruit Research and Extension Center, Washington State University, Wenatchee 98801
| | - A I Zuniga
- Gulf Coast Research and Education Center, University of Florida, Wimauma 33598
| | - N A Peres
- Gulf Coast Research and Education Center, University of Florida, Wimauma 33598
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Affiliation(s)
- M. R. Maleki
- Department of Industrial Engineering, Faculty of Engineering, Shahed University, Tehran, Iran
| | - P. Castagliola
- Université de Nantes & LS2N UMR CNRS 6004, Nantes, France
| | - A. Amiri
- Department of Industrial Engineering, Faculty of Engineering, Shahed University, Tehran, Iran
| | - Michael B. C. Khoo
- School of Mathematical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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Vojoudi H, Badiei A, Amiri A, Banaei A, Ziarani G, Schenk-Joß K. Efficient device for the benign removal of organic pollutants from aqueous solutions using modified mesoporous magnetite nanostructures. Journal of Physics and Chemistry of Solids 2018; 113:210-219. [DOI: 10.1016/j.jpcs.2017.10.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
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Fatemi SJ, Amiri A, Bazargan MH, Tubafard S, Fatemi SN. Clinical Evaluation of Desferrioxamine (DFO) for Removal of Thallium Ions in Rat. Int J Artif Organs 2018; 30:902-5. [DOI: 10.1177/039139880703001007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An investigation was conducted to evaluate the ability of DFO following the administration of thallium salt in male Wistar rats. Thallium was introduced to several groups of weanling male Wistar rats via different means, through drink, food and intraperitoneal injection. A control group was fed on a diet containing a normal level of iron. After a period of 30 days, all the rats administered thallium were severely anemic and showed toxicity symptoms through loss of hair, an increase in thallium and a decrease in iron levels in the blood. Chelation therapy was carried out to remove the toxic element from the body. The ability of desferrioxamine (DFO) in removing thallium was investigated by injection of this chelator for one week to the remaining rats of similar groups. The results showed that the thallium level present in the blood was significantly reduced and, at the same time, the iron concentration returned to the normal level. It was concluded that DFO chelator is able to remove thallium from the body and could be used for the treatment of complications and eradication of symptoms of thallium intoxication.
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Affiliation(s)
- S. J. Fatemi
- Chemistry Department, Shahid Bahonar University of Kerman, Kerman - Iran
| | - A. Amiri
- Chemistry Department, Shahid Bahonar University of Kerman, Kerman - Iran
| | - M. H. Bazargan
- Chemistry Department, Shahid Bahonar University of Kerman, Kerman - Iran
| | - S. Tubafard
- Chemistry Department, Shahid Bahonar University of Kerman, Kerman - Iran
| | - S. N. Fatemi
- Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman - Iran
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Maleki MR, Amiri A, Taheriyoun AR, Castagliola P. Phase I monitoring and change point estimation of autocorrelated poisson regression profiles. COMMUN STAT-THEOR M 2017. [DOI: 10.1080/03610926.2017.1402052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. R. Maleki
- Department of Industrial Engineering, Faculty of Engineering, Shahed University, Tehran, Iran
| | - A. Amiri
- Department of Industrial Engineering, Faculty of Engineering, Shahed University, Tehran, Iran
| | - A. R. Taheriyoun
- Department of Statistics, Faculty of Mathematical Sciences, Shahid Beheshti University, G.C. Tehran, Iran
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Rostami-Far Z, Ghadiri K, Rostami-Far M, Shaveisi-Zadeh F, Amiri A, Rahimian Zarif B. Glucose-6-phosphate dehydrogenase deficiency (G6PD) as a risk factor of male neonatal sepsis. J Med Life 2016; 9:34-38. [PMID: 27974910 PMCID: PMC5152609] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Introduction.Neonatal sepsis is a disease process, which represents the systemic response of bacteria entering the bloodstream during the first 28 days of life. The prevalence of sepsis is higher in male infants than in females, but the exact cause is unknown. Glucose-6-phosphate dehydrogenase (G6PD) is an enzyme in the pentose phosphate pathway, which leads to the production of NADPH. NADPH is required for the respiratory burst reaction in white blood cells (WBCs) to destroy microorganisms. The purpose of this study was to evaluate the prevalence of G6PD deficiency in neonates with sepsis. Materials and methods.This study was performed on 76 neonates with sepsis and 1214 normal neonates from February 2012 to November 2014 in the west of Iran. The G6PD deficiency status was determined by fluorescent spot test. WBCs number and neutrophils percentages were measured and compared in patients with and without G6PD deficiency. Results.The prevalence of the G6PD deficiency in neonates with sepsis was significantly higher compared to the control group (p=0.03). WBCs number and neutrophils percentages in G6PD deficient patients compared with patients without G6PD deficiency were decreased, but were not statistically significant (p=0.77 and p=0.86 respectively). Conclusions.G6PD deficiency is a risk factor of neonatal sepsis and also a justification for more male involvement in this disease. Therefore, newborn screening for this disorder is recommended.
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Affiliation(s)
- Z Rostami-Far
- Department of Biology, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
| | - K Ghadiri
- Nosocomial Infection Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - M Rostami-Far
- Department of Environmental Health Engineering, School of Public Health, Kermanshah University of Medical Sciences, Iran
| | - F Shaveisi-Zadeh
- Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah, University of Medical Sciences, Kermanshah, Iran
| | - A Amiri
- Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah, University of Medical Sciences, Kermanshah, Iran
| | - B Rahimian Zarif
- Department of Biology, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
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Rafieerad AR, Bushroa AR, Nasiri-Tabrizi B, Vadivelu J, Baradaran S, Zalnezhad E, Amiri A. Optimized fabrication and characterization of TiO2–Nb2O5–Al2O3 mixed oxide nanotube arrays on Ti–6Al–7Nb. RSC Adv 2016. [DOI: 10.1039/c5ra20493c] [Citation(s) in RCA: 19] [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
The TiO2–Nb2O5–Al2O3 mixed oxide nanotube arrays on Ti67 are the promising nanostructured materials for metallic orthopaedic implants.
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Affiliation(s)
- A. R. Rafieerad
- Department of Mechanical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - A. R. Bushroa
- Department of Mechanical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - B. Nasiri-Tabrizi
- Advanced Materials Research Center
- Materials Engineering Department
- Najafabad Branch
- Islamic Azad University
- Najafabad
| | - J. Vadivelu
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - S. Baradaran
- Department of Mechanical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - E. Zalnezhad
- Department of Mechanical Engineering
- Hanyang University
- Seoul
- Korea
| | - A. Amiri
- Department of Mechanical Engineering
- Faculty of Engineering
- University of Malaya
- 50603 Kuala Lumpur
- Malaysia
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18
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Zare-Zardini H, Amiri A, Shanbedi M, Taheri-Kafrani A, Sadri Z, Ghanizadeh F, Neamatzadeh H, Sheikhpour R, Keyvani Boroujeni F, Masoumi Dehshiri R, Hashemi A, Aminorroaya MM, Dehgahnzadeh MR, Shahriari S. Nanotechnology and Pediatric Cancer: Prevention, Diagnosis and Treatment. Iran J Ped Hematol Oncol 2015; 5:233-48. [PMID: 26985357 PMCID: PMC4779159] [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] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022]
Abstract
Despite development of new approaches for the treatment of cancer disease, it is the second cause of mortality in world. Annually, 30000 persons die in Iran due to cancer diseases. Eighty percent of cancer patients are children which about 50% children lead to death. Given the high rate of cancer-related death, the new approaches for prevention, control, early diagnosis, and treatment of this disease seem necessary. Investigation of new strategies is the major challenge for scientists at recent century. Nanotechnology as a new scientific field with novel and small compounds utilized different fields over the past ten years especially in medicine. This science has come to the forefront in the areas of medical diagnostics, imaging, and therapeutic scheduls. Therefore, it has the potential applications for cancer detection and therapy. This review will discuss the therapeutic applications of different nano-materials in diagnosis, imaging, and delivery of therapeutic agents for the treatment of cancer with a major focus on their applications for the treatment of cancer and cancer- related diseases in children. The advancements in established nanoparticle technologies such as liposomes, polymer micelles, and functionalization regarding tumor targeting and controlled release strategies as well as drug delivery were discussed. It will also review the blood toxicity of used nanostructures.
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Affiliation(s)
- H Zare-Zardini
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - A Amiri
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - M Shanbedi
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - A Taheri-Kafrani
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran
| | - Z Sadri
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - F Ghanizadeh
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - H Neamatzadeh
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - R Sheikhpour
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | | | - R Masoumi Dehshiri
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - A Hashemi
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - MM Aminorroaya
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - MR Dehgahnzadeh
- Shahid Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Sh Shahriari
- Shahid Sadoughi Hospital, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
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Gagnon A, Pelaez S, Merry L, Amiri A, Hendricks K. Migrant Friendly Maternity Care in a Western Urban Centre. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv170.012] [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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21
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Delmo Walter E, Amiri A, Hetzer R. Standardized Strategy and Long-Term Surgical Outcome of Mitral Valve Repair in Congenital Mitral Stenosis. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544529] [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]
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22
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Amiri A, Zuniga AI, Mertely J, Peres NA. First Report on Resistance to Pyraclostrobin, Thiophanate-methyl, Fenhexamid and Boscalid in Botrytis cinerea from Eucalyptus Seedlings in Florida Greenhouses. Plant Dis 2014; 98:851. [PMID: 30708681 DOI: 10.1094/pdis-10-13-1107-pdn] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Botryotinia fuckeliana de Bary (anamorph Botrytis cinerea Pers.) is an ubiquitous plant pathogen causing gray mold disease on more than 200 crops grown in the field or in greenhouses. Eucalyptus seedlings originating from three different greenhouses showing stem lesions were submitted to the Gulf Coast Research and Education Center Disease Clinic in June 2012. Ten single spore isolates of B. cinerea were obtained and tested for sensitivity using spore germination and germ tube elongation assays described previously (4). Fungicides tested were pyraclostrobin at 100 μg/ml (Cabrio, BASF, Research Triangle Park, NC), thiophanate-methyl at 100 μg/ml (Topsin-M, UPI, King of Prussia, PA), fenhexamid at 1 and 50 μg/ml (Elevate, Arysta Life Sciences, Cary, NC), fludioxonil at 0.1 and 10 μg/ml (Medallion, Syngenta Crop Protection, Research Triangle Park, NC), and iprodione at 5 and 50 μg/ml (Rovral, Bayer CropScience, Greensboro, NC) on 1% malt extract agar (MEA, 10 g malt extract and 15 g agar), and to cyprodinil at 1 and 25 μg/ml (Vanguard, Syngenta Crop Protection) on 0.5% sucrose agar (4). Sensitivity to the succinate dehydrogenase inhibitors (SDHIs) boscalid at 5 μg/ml (Endura, BASF), penthiopyrad at 1 and 3 μg/ml (Fontelis, DuPont Crop Protection, Willington, DE), and fluopyram at 3 μg/ml (Luna Privilege, Bayer CropScience) was evaluated on yeast bacto acetate agar (YBA) (3). The discriminatory dose for boscalid was adapted from (2) whereas those used for penthiopyrad and fluopyram were developed in this study. Isolates were grown on malt yeast extract agar for 7 to 10 days and spore suspensions were prepared in sterile distilled water and diluted to 106 conidia/ml. Respective media in 9-cm petri dishes were seeded with 7-μl droplets from each isolate allowing testing for all isolates on one plate. Two plates were used for each fungicide and sensitivity tests were repeated twice. Germination and germ tube growth were assessed microscopically after 16 to 24 h incubation at 22°C. The frequency of isolates resistant to two, three, and four fungicides was 90, 60, and 10%, respectively. Nine isolates (90%) were resistant to thiophanate-methyl and pyraclostrobin, simultaneously, whereas six (60%) and two isolates (20%) were resistant to boscalid and fenhexamid, respectively. All boscalid-resistant isolates were also resistant to pyraclostrobin and thiophanate-methyl, but one fenhexamid-resistant isolate was sensitive to the other three fungicides. Eight isolates that germinated at 5 μg/ml iprodione but not at 50 μg/ml were considered sensitive. All isolates were sensitive to the SDHIs penthiopyrad and fluopyram as well as to cyprodinil and fludioxonil. To our knowledge, this is the first report of resistance to pyraclostrobin, thiophanate-methyl, fenhexamid, and boscalid in B. cinerea from eucalyptus seedlings in Florida. The absence of resistance to fludioxonil and iprodione is likely because these fungicides are not registered in nurseries as well as fluopyram and penthiopyrad which were developed only recently. Management practices should be developed to limit the selection and spread of additional resistant populations in eucalyptus nurseries as has occurred in Florida strawberries where multi-fungicide resistance is widespread (1). References: (1) A. Amiri et al. Plant Dis. 97:393, 2013. (2) M. Leroch et al. Appl. Environ. Microbiol. 79:159, 2013. (3) G. Stammler and J. Speakman. J. Phytopathol. 154:508, 2006. (4) R. W. S. Weber and M. Hahn. J. Plant Dis. Prot. 118:17, 2011.
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Affiliation(s)
- A Amiri
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
| | - A I Zuniga
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
| | - J Mertely
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
| | - N A Peres
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
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Delmo Walter E, Amiri A, Solowjowa N, Siniawski H, Hetzer R. Posterior annulus shortening increases leaflet coaptation in ischemic mitral incompetence: a new and valid technique. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1367401] [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: 10/25/2022]
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24
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Amiri A, Delmo Walter EW, Hetzer R. A simplified minimally invasive approach to mitral valve surgery - optimal access under direct vision. Heart Lung Vessel 2014; 6:152-6. [PMID: 25279357 PMCID: PMC4181276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
With increasing enthusiasm in minimally invasive surgery, several approaches and access are being performed with great precision. In this report, we illustrate and describe a minimal invasive approach to mitral valve surgery with optimal access under direct vision, the indications and patient selection, the surgical techniques, its advantages over the other approaches, and its simplicity and reproducibility.
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Meyer V, Tamarelle B, Amiri A, Pages A, Martin X, Colombel M. Analyse de la tolérance aux instillations intravésicale de BCG par autoquestionnaires. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.163] [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: 11/30/2022]
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26
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Amiri A, Delmo Walter E, Hetzer R. Optimally invasive mitral valve surgery: a safe and effective approach. J Cardiothorac Surg 2013. [PMCID: PMC3844863 DOI: 10.1186/1749-8090-8-s1-o269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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27
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Amiri A, Heath SM, Peres NA. Phenotypic Characterization of Multifungicide Resistance in Botrytis cinerea Isolates from Strawberry Fields in Florida. Plant Dis 2013; 97:393-401. [PMID: 30722364 DOI: 10.1094/pdis-08-12-0748-re] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chemical control has always been essential for the management of gray mold, caused by Botrytis cinerea, to ensure sustainable strawberry production. However, lack of knowledge about actual resistance development may have disastrous consequences and lead to severe epidemics such as the one that affected several strawberry fields in 2012 in Florida. In this study, we tested 392 isolates collected from Florida strawberry fields between 2010 and 2012 for their sensitivity to boscalid (Bosc), a succinate dehydrogenase inhibitor (SdhI); pyraclostrobin, a quinone outside inhibitor (QoI); boscalid + pyraclostrobin (Pristine); fenhexamid, a hydroxyanilide (Hyd); pyrimethanil and cyprodinil, anilinopyrimidines; fludioxonil, a phenylpyrrole; and fludioxonil + cyprodinil (Switch). The respective resistance frequencies for boscalid, pyraclostrobin, Pristine, fenhexamid, cyprodinil, and pyrimethanil were 85.4, 86.5, 86.0, 44.4, 52.7, and 59.5%. Overall, 17.8 and 19.8% of isolates showed reduced sensitivity to fludioxonil and Switch, respectively. All fungicides sprayed preventively on detached strawberry fruit failed to control isolates with high levels of resistance to each fungicide except for fludioxonil and Switch. Four phenotypes with multifungicide resistance (MFR) were detected in B. cinerea populations from Florida. Isolates resistant to one fungicide (FR1), two (MFR2), three (MFR3), and four (MFR4) fungicides from different chemical groups represented 5.9, 28.6, 41.8, and 23.7% of the total resistant population, respectively. The MFR3 isolates were predominant and contained two subpopulations, the Bosc-QoI-APR isolates (56.5%) and the Bosc-QoI-HydR isolates (40.6%). In addition to reporting on very highly resistant populations to boscalid and QoI fungicides, we show evidence for a widespread multifungicide resistance to B. cinerea that warrants immediate implementation of novel management strategies to impede the development of more resistant populations.
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Affiliation(s)
- A Amiri
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
| | - S M Heath
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
| | - N A Peres
- University of Florida, Gulf Coast Research and Education Center, Wimauma, FL 33598
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Delmo Walter E, Amiri A, Siniawski H, Hetzer R. Functional tricuspid regurgitation: When and which to operate? Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332313] [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: 10/27/2022]
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29
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Amiri A, Musci M, Delmo Walter E, Petrov G, Siniawski H, Mladenow A, Kuppe H, Hetzer R. Optimally invasive mitral valve surgery: A safe and effective approach. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332695] [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: 10/27/2022]
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Sarafraz-Yazdi A, Fatehyan E, Amiri A. Determination of Mercury in Real Water Samples Using in situ Derivatization Followed by Sol-Gel-Solid-Phase Microextraction with Gas Chromatography-Flame Ionization Detection. J Chromatogr Sci 2012; 52:81-7. [DOI: 10.1093/chromsci/bms208] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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31
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Musci M, Hübler M, Amiri A, Siniawski H, Kosky S, Stein S, Pasic M, Weng Y, Hetzer R. Results of the “No-React®” bioprosthesis in patients with active infective endocarditis: 11-year single center experience in 402 patients. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297491] [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: 10/14/2022]
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32
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Zhu FX, Bryson PK, Amiri A, Schnabel G. First Report of the β-tubulin E198A Allele for Fungicide Resistance in Monilinia fructicola from South Carolina. Plant Dis 2010; 94:1511. [PMID: 30743388 DOI: 10.1094/pdis-09-10-0641] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Resistance to methyl benzimidazole carbamates (MBCs) in Monilinia fructicola, the causal agent of brown rot of stone fruits, is known to be present in South Carolina peach orchards, but the molecular mechanism of resistance has not been investigated. Nine isolates were collected from peach in five counties in South Carolina and examined in petri dish assays on potato dextrose agar (PDA) for resistance to the MBC fungicide thiophanate-methyl (Topsin-M 70WP; Ceraxagri, King of Prussia, PA) at the discriminatory dose of 50 μg/ml. Isolates that grew on the fungicide-amended medium were considered highly resistant (HR). The β-tubulin gene from four sensitive (S) and five HR M. fructicola isolates was PCR-amplified with primer pair TubA and TubR1 as described previously (1). Sequence analysis revealed several silent mutations in introns and exons in S and HR isolates and the presence of the previously described E198A allele in HR but not S isolates (1). Nucleotide sequences of the β-tubulin gene from three S (BS, S2, MfEgpc1) and two HR isolates (MfPdt6 and BR2) were submitted to GenBank under accession numbers HM051379, HM051380, HM051381, HM051382, and HM051383, respectively. To our knowledge, this is the first report of the E198A in M. fructicola isolates from South Carolina and the East Coast. This allele is responsible for high levels of MBC resistance in M. fructicola (1). A previously reported PCR-based method using primers HRF+HRR designed to detect the E198A mutation in M. fructicola HR isolates (1) was improved by adding primer TR739 (5'-TCA CGA CGA ACA ACA TCA AGA-3') to the PCR cocktail. This additional internal primer amplified a 222-bp fragment from all S and HR isolates and therefore provided a useful, additional control. The confirmation of the E198A allele in M. fructicola isolates provides another useful tool to detect MBC resistance in commercial peach orchards in South Carolina. Reference: (1) Z. H. Ma et al. Appl. Environ. Microbiol. 69:7145, 2003.
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Affiliation(s)
- F X Zhu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China, 430070
| | - P K Bryson
- Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634
| | - A Amiri
- Department of Plant Pathology, University of Wisconsin, Madison 53705
| | - G Schnabel
- Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634
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Amiri A, Brannen PM, Schnabel G. Reduced Sensitivity in Monilinia fructicola Field Isolates from South Carolina and Georgia to Respiration Inhibitor Fungicides. Plant Dis 2010; 94:737-743. [PMID: 30754318 DOI: 10.1094/pdis-94-6-0737] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Quinone outside inhibitor (QoI) and succinate dehydrogenase inhibitor (SdhI) fungicides are respiration inhibitors (RIs) used for preharvest control of brown rot of stone fruit. Both chemical classes are site-specific and, thus, prone to resistance development. Between 2006 and 2008, 157 isolates of Monilinia fructicola collected from multiple peach and nectarine orchards with or without RI spray history in South Carolina and Georgia were characterized based upon conidial germination and mycelial growth inhibition for their sensitivity to QoI fungicides azoxystrobin and pyraclostrobin, SdhI fungicide boscalid, and a mixture of pyraclostrobin + boscalid. There was no significant difference (P = 0.05) between EC50 values for inhibition of conidial germination versus mycelial growth. The mean EC50 values based upon mycelial growth tests for 25 isolates from an orchard without RI-spray history were 0.15, 0.06, 2.23, and 0.09 μg/ml for azoxystrobin, pyraclostrobin, boscalid, and pyraclostrobin + boscalid, respectively. The respective mean EC50 values for 76 isolates from RI-sprayed orchards in South Carolina were 0.9, 0.1, 10.7, and 0.13 μg/ml and for 56 isolates from RI-sprayed orchards in Georgia were 1.2, 0.1, 8.91, and 0.17 μg/ml. Overall, mean EC50 values of populations from RI-sprayed orchards increased three-, two-, five-, and twofold between 2006 and 2008 for azoxystrobin, pyraclostrobin, boscalid, and pyraclostrobin + boscalid, respectively. A subset of 10 M. fructicola isolates representing low and high EC50 values for azoxystrobin, boscalid, and boscalid + pyraclostrobin was selected for a detached fruit assay to determine disease incidence and severity following protective treatments of formulated RI fungicides at label rates. Brown rot incidence was greater than 50% when fruit were inoculated with isolates having EC50 values of 2, 4, and 0.6 μg/ml for azoxystrobin, boscalid, and pyraclostrobin + boscalid, respectively. Pyraclostrobin failed to control any of the isolates tested in detached fruit assays. Based on minimum inhibitory concentration and brown rot incidence data, we recommend using 3 and 0.75 μg/ml as discriminatory doses to distinguish between sensitive isolates and those with reduced sensitivity to azoxystrobin and pyraclostrobin + boscalid, respectively. Results from our in vitro and in vivo assays indicate a shift toward reduced sensitivity in M. fructicola from the southeastern United States. No cross-resistance was observed between the QoI and the SdhI fungicides, which implies that rotation or tank mixtures of these two chemical classes can be used as a resistance management strategy.
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Affiliation(s)
- A Amiri
- Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634
| | - P M Brannen
- Department of Plant Pathology, University of Georgia, Athens 30602
| | - G Schnabel
- Department of Entomology, Soils, and Plant Sciences, Clemson University
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Yazdani R, Abhishek A, Fiona P, Lim K, Regan M, Lanyon P, Khan K, Hoyles RK, Shiwen X, Derrett-Smith E, Abraham D, Denton CP, Ottewell L, Walker K, Griffiths B, Ali Nazarinia M, Abbasi N, Karimi A, Amiri A, Derrett-Smith EC, Baliga R, Dooley A, Khan K, Shi-Wen X, Abraham D, Denton CP, Stretton K, Shukla S, Hall F, Nandagudi A, Kingsley G, Scott D, Stratton R, Nandagudi A, Shiwen X, Leask A, Denton CP, Abraham D, Stratton R, Denton CP, Guillevin L, Krieg T, Schwierin B, Rosenberg D, Silkey M, Matucci-Cerinic M, Jones H, Derrett-Smith E, Shiwen X, Khan K, Denton CP, Abraham D, Bou-Gharios G, So P, Shiwen X, Renzoni E, Denton C, Wells A, Abraham D. Scleroderma and Related Disorders [202-212]: 202. Multi-Centre Audit of Treatment of Interstitial Lung Disease in Systemic Sclerosis with IV Cyclophosphamide. Rheumatology (Oxford) 2010. [DOI: 10.1093/rheumatology/keq726] [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: 11/13/2022] Open
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Daylami R, Khatri V, Schneider P, Troppmann C, Amiri A. Inferior Vena Cava Leiomyosarcoma: Is Reconstruction Necessary after Resection? J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.256] [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: 11/30/2022]
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Musci M, Weng Y, Hübler M, Amiri A, Kosky S, Stein J, Siniawski H, Yankah C, Hetzer R. Valve repair of active infective AV valve endocarditis: 23-year single center experience. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246655] [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: 10/19/2022]
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Musci M, Weng Y, Hübler M, Amiri A, Kosky S, Siniawski H, Yankah C, Hetzer R. Surgical treatment for left-sided active infective double valve endocarditis: 23-year single center experience. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246944] [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: 10/19/2022]
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Amiri A, Bussey KE, Riley MB, Schnabel G. Propiconazole Inhibits Armillaria tabescens In Vitro and Translocates into Peach Roots Following Trunk Infusion. Plant Dis 2008; 92:1293-1298. [PMID: 30769441 DOI: 10.1094/pdis-92-9-1293] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Intravascular trunk infusion of propiconazole has been associated with beneficial effects on Armillaria root rot control in Prunus sp. but its basipetal movement has not been verified. Propiconazole, a sterol demethylation inhibitor fungicide, was more effective in inhibiting mycelial growth of Armillaria tabescens isolates in vitro (average effective concentration to inhibit mycelial growth by 50% [EC50 value] of 0.6 μg/ml) compared with fungicides from five other chemical classes (EC50 values ranging from 4.6 to >1,000 μg/ml). The fungicide was infused into the vascular system of peach trees in the spring, summer, and fall of 2005 and 2006. Propiconazole concentration was determined using gas chromatography mass spectrometry in trunk sections above and below the infusion site and in primary roots. Over two experimental years, spring and fall infusions resulted in consistent propiconazole accumulations in primary peach roots. Spring infusions yielded propiconazole concentrations of 1.7 μg/g in 2005 and 5.6 μg/g in 2006, whereas the highest accumulations were detected following fall infusions with 9.2 μg/g in 2005 and 6.7 μg/g in 2006. Propiconazole was also consistently detected in trunk sections collected from above and below the infusion site. The basipetal movement of propiconazole in peach trees and its inhibitory activity against A. tabescens in vitro suggest that propiconazole infusion could be useful for targeted Armillaria root rot management.
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Affiliation(s)
- A Amiri
- Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634
| | - Karen E Bussey
- Department of Crop Science, North Carolina State University, Raleigh, NC 27619
| | - Melissa B Riley
- Department of Entomology, Soils, and Plant Sciences, Clemson University
| | - G Schnabel
- Department of Entomology, Soils, and Plant Sciences, Clemson University
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Abstract
Abstract Clinical features of systemic lupus erythematosus (SLE) have been described from different geographical regions in the world. However, data from many Middle East countries, including Iran, are scarce. This study aims to demonstrate the demographic, clinical, and laboratory characteristics in Iranian patients with SLE. In this prospective study, all the patients referring to Shiraz educational hospitals (Nemazi–Hafez) with SLE (American College of Rheumatology criteria) during a 5-year period (2001 to 2006) were included. A complete history was taken; physical examination and routine hematological, serological, and immunological tests were done for each patient. There were 356 women and 54 men with an average age of 30.27 years at the onset of disease. Of the patients, 78% had hematological abnormalities, 65.5% had articular involvement, 54.5% had photosensitivity, and 60.5% had malar rash. Serositis occurred in 38% of patients of whom 12% had pericarditis and 26% had pleuritis. Nephritis was diagnosed in 48% of the cases and consisted always of glomerular nephritis. Biopsy-proven lupus nephritis was in most cases class IV(49.7% of all the biopsies). Oral ulcers were observed in 28% of patients. Neuropsychiatric manifestations, gastrointestinal involvement, and lymphadenopathy were observed in 31.5%, 8.3%, and 14.2% of patients, respectively. In all, 93% of patients were positive for antinuclear antibodies, whereas antidouble-stranded DNA was positive in 83% of patients. Coomb’s positive hemolytic anemia appeared in 12.4% of the cases. Rheumatoid factor was detected in 9.7% of patients, and lupus erythematosus cell was seen in 32.5% of them. In all, 196 (47.8%) patients represented hypocomplementemia. Regarding hematological manifestations, 74.5% had microcytic hypochromic anemia, 64.6% had leukopenia, and 44.6% had thrombocytopenia; 18 (4.4%) patients died during the study period of which eight (2%) died because of cardiopulmonary involvement. Generally, there was more cutaneous, serositis, and neuropsychiatric involvement in our population than other Middle East countries. Serositis was associated with poorer prognosis, and the pattern of disease in these patients was much more sever than patients without serositis ( P = 0.001). This is the first study of its kind in Iran. More multicenter studies should be undertaken in Iran to describe the pattern of SLE.
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Affiliation(s)
- MA Nazarinia
- Rheumatology Department of Shiraz University of Medical Sciences, Shiraz, Iran
| | - F Ghaffarpasand
- Student Research Committee of Fasa University of Medical Sciences, Fasa, Iran
| | - A Shamsdin
- Student Research Committee of Fasa University of Medical Sciences, Fasa, Iran
| | - AA Karimi
- Student Research Committee of Fasa University of Medical Sciences, Fasa, Iran
| | - N Abbasi
- Student Research Committee of Fasa University of Medical Sciences, Fasa, Iran
| | - A Amiri
- Student Research Committee of Fasa University of Medical Sciences, Fasa, Iran
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Amiri A, Scherm H, Brannen PM, Schnabel G. Laboratory Evaluation of Three Rapid, Agar-Based Assays to Assess Fungicide Sensitivity in Monilinia fructicola. Plant Dis 2008; 92:415-420. [PMID: 30769692 DOI: 10.1094/pdis-92-3-0415] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Three rapid, agar-based assays were compared with a traditional petri dish method for assessing the sensitivity of Monilinia fructicola to propiconazole (0.3 and 2.0 μg/ml), thiophanate-methyl (1.0 and 50 μg/ml), and azoxystrobin (1.0 and 35 μg/ml) in the laboratory. The three assays were based on mycelial growth inhibition on agar disks sliced from lipbalm tubes filled with fungicide-amended potato dextrose agar (PDA), on PDA-coated cotton swabs, or in PDA-filled microcentrifuge tubes. Mycelial growth inhibition of eight previously characterized isolates (two resistant to propiconazole, two highly resistant to thiophanate-methyl, two with low levels of resistance to thiophanate-methyl, and two sensitive to all three fungicides) was determined visually 24, 48, and 72 h after inoculation. The 48-h time point was the earliest suitable time to collect data for all methods because insufficient growth was recorded in the petri dish and tube assays after 24 h. With the exception of the swab assay, all methods classified the isolates previously determined to be fungicide sensitive correctly (i.e., no fungal growth was observed for these isolates). For propiconazole-resistant isolates, the lipbalm assay resulted in levels of growth inhibition very similar to the petri dish method, whereas the swab assay and the tube assay overestimated and underestimated, respectively, the level of resistance. Both the lipbalm and the swab assays classified isolates correctly as being thiophanate-methyl resistant, and both were able to discriminate the isolates previously classified as having low versus high levels of resistance when treated with this fungicide at 50 μg/ml, as was the petri dish method. None of the eight isolates which previously were determined to be azoxystrobin sensitive grew on azoxystrobin-amended media, regardless of the assay type. Overall, the average percentage of correct isolate classifications (relative to their previously determined resistance status) on propiconazole- and thiophanate-methyl-amended media after 48 h ranged from 87.5 to 100, 85.3 to 100, 63.2 to 94.5, and 50.5 to 81.0% for the petri dish, lipbalm, swab, and tube assays, respectively. The lipbalm assay provided the most accurate assessments (85.3 to 100%) after only 24 h of incubation, supporting its use as a rapid and simple tool to monitor resistance levels in M. fructicola field populations.
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Affiliation(s)
- A Amiri
- Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634
| | - H Scherm
- Department of Plant Pathology, University of Georgia, Athens 30602
| | - P M Brannen
- Department of Plant Pathology, University of Georgia, Athens 30602
| | - G Schnabel
- Department of Entomology, Soils, and Plant Sciences, Clemson University
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Amiri A, Monajjemi M, Ketabi S. Quantum simulation on donor and acceptor II calix[4]arene substrate and alkali metal ions: the driven inclusion. Physics and Chemistry of Liquids 2007. [DOI: 10.1080/00319100500424191] [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: 12/07/2022]
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Amiri A, Noei F, Jeganathan S, Kulkarni G, Pinke DE, Lee JM. eEF1A2 activates Akt and stimulates Akt-dependent actin remodeling, invasion and migration. Oncogene 2006; 26:3027-40. [PMID: 17130842 DOI: 10.1038/sj.onc.1210101] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
eEF1A2 (eukaryotic protein elongation factor 1 alpha 2) is a protein translation factor that is likely a human oncogene by virtue of its capacity to transform mammalian cells and its high expression in tumors of the ovary, breast and lung. Here, we show that expression of eEF1A2 is sufficient to stimulate the formation of filopodia in BT549 human breast cancer cells and non-transformed Rat2 cells. Filopodia formation in eEF1A2-expressing cells is dependent on the activity of phosphatidylinositol-3 kinase (PI3K), and the ROCK and Akt kinases. Furthermore, eEF1A2 expression is sufficient to activate Akt in a PI3K-dependent fashion and inactivation of eEF1A2 by short interfering RNA reduces Akt activity. Using breast cancer cell line BT 549, we show that eEF1A2 expression stimulates cell migration and invasion in a largely PI3K- and Akt-dependent manner. These results suggest that eEF1A2 regulates oncogenesis through Akt and PI3K-dependent cytoskeletal remodeling.
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Affiliation(s)
- A Amiri
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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Monajjemi M, Ketabi S, Amiri A. Monte Carlo simulation study of melittin: Protein folding and temperature dependence. Russ J Phys Chem 2006. [DOI: 10.1134/s0036024406130103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Amiri A, Monajjemi M, Zare K, Ketabi S. Complexation behaviour ofp-t-butyl-calix[4]arene propoxy derivatives toward alkali metal cations in chloroform. Physics and Chemistry of Liquids 2006. [DOI: 10.1080/00319100500502400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Monajjemi M, Ketabi S, Zadeh MH, Amiri A. Simulation of DNA bases in water: Comparison of the Monte Carlo algorithm with molecular mechanics force fields. Biochemistry (Moscow) 2006; 71 Suppl 1:S1-8. [PMID: 16487059 DOI: 10.1134/s0006297906130013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The interaction between the nucleic acid bases and solvent molecules has an important effect in various biochemical processes. We have calculated total energy and free energy of the solvation of DNA bases in water by Monte Carlo simulation. Adenine, guanine, cytosine, and thymine were first optimized in the gas phase and then placed in a cubic box of water. We have used the TIP3 model for water and OPLS for the nucleic acid bases. The canonical (T, V, N) ensemble at 25 degrees C and Metropolis sampling technique have been used. Good agreement with other available computational data was obtained. Radial distribution functions of water around each site of adenine, guanine, cytosine, and thymine have been computed and the results have shown the ability of the sites for hydrogen bonding and other interactions. The computations have shown that guanine has the highest value of solvation free energy and N7 and N6 in adenine and guanine, N3 in cytosine, and N3 and O4 in thymine have the largest radial distribution function. Monte Carlo simulation has also been performed using the CHARMM program under the same conditions, and the results of two procedures are compared.
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Affiliation(s)
- M Monajjemi
- Department of Chemistry, Science and Research Campus, Islamic Azad University, Tehran, Iran.
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Pero RW, Amiri A, Sheng Y, Welther M, Rich M. Formulation and in vitro/in vivo evaluation of combining DNA repair and immune enhancing nutritional supplements. Phytomedicine 2005; 12:255-63. [PMID: 15898702 DOI: 10.1016/j.phymed.2004.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Combining nutritional supplements to achieve synergistic benefit is a common practice in the nutraceutical industry. However, establishing added health benefit from a combination of natural ingredients is often assumed, untested and without regard to the principle of metabolic competition between the active components. Here, we report on the combination of a cat's claw water extract (C-Med-100, carboxy alkyl esters = active ingredients) + medicinal mushroom extracts (Cordyceps sinensis, Grifola blazei, Grifolafrondosa, Trametes versicolor and Ganoderma lucidum, polysaccharides = active ingredients) + nicotinamide + zinc into a formulation designed to optimize different modes of immunostimulatory action, and yet that would avoid metabolic antioxidant competition yielding less than expected efficacious effects. Isobole curve analyses of these two active classes of ingredients determined by growth inhibition of HL-60 human leukemic cells in vitro confirmed they were indeed synergistic when in combination, and not metabolically competitive. Furthermore, an in vivo study showed significant health benefit for 14 subjects treated for 4 weeks with the unique C-Med-100/mushroom extract formulation in that they had reduced pain, reduced fatigue, weight loss and a reduced presence of DNA damage in peripheral blood assessed by (8-OH) guanine DNA adducts and elevation in serum protein thiols. Because this broad-based panel of clinical parameters indicating clinical efficacy has never been demonstrated before for either of the active ingredients evaluated alone in humans, these data were taken as strong evidence that the combination of C-Med-100 + mushroom extracts + nicotinamide + zinc gave additive or synergistic effects to health benefit, and thus supported no efficacious limits from metabolic competition regarding this particular formulation.
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Affiliation(s)
- R W Pero
- Department of Cell and Molecular Biology, Section for Tumor Immunology, University of Lund, Lund, Sweden.
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Monajjemi M, Chahkandi B, Zare K, Amiri A. Study of the hydrogen bond in different orientations of adenine-thymine base pairs: An ab initio study. Biochemistry (Moscow) 2005; 70:366-76. [PMID: 15823092 DOI: 10.1007/s10541-005-0123-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
In order to gain deeper insight into structure, charge distribution, and energies of A-T base pairs, we have performed quantum chemical ab initio and density functional calculations at the HF (Hartree-Fock) and B3LYP levels with 3-21G*, 6-31G*, 6-31G**, and 6-31++G** basis sets. The calculated donor-acceptor atom distances in the Watson-Crick A-T base pair are in good agreement with the experimental mean values obtained from an analysis of 21 high resolution DNA structures. In addition, for further correction of interaction energies between adenine and thymine, the basis set superposition error (BSSE) associated with the hydrogen bond energy has been computed via the counterpoise method using the individual bases as fragments. In the Watson-Crick A-T base pair there is a good agreement between theory and experimental results. The distances for (N2...H23-N19), (N8-H13...O24), and (C1...O18) are 2.84, 2.94, and 3.63 A, respectively, at B3LYP/6-31G** level, which is in good agreement with experimental results (2.82, 2.98, and 3.52 A). Interaction energy of the Watson-Crick A-T base pair is -13.90 and -10.24 kcal/mol at B3LYP/6-31G** and HF/6-31G** levels, respectively. The interaction energy of model (9) A-T base pair is larger than others, -18.28 and -17.26 kcal/mol, and for model (2) is the smallest value, -13.53 and -13.03 kcal/mol, at B3LYP/6-31G** and B3LYP/6-31++G** levels, respectively. The computed B3LYP/6-31G** bond enthalpies for Watson-Crick A-T pairs of -14.4 kcal/mol agree well with the experimental results of -12.1 kcal/mol deviating by as little as -2.3 kcal/mol. The BSSE of some cases is large (9.85 kcal/mol) and some is quite small (0.6 kcal/mol).
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Affiliation(s)
- M Monajjemi
- Science and Research Campus, Islamic Azad University, Hesarak, Poonak, PO Box 14515-775, Tehran, Iran.
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Baretti R, Amiri M, Amiri A, Siniawski H, Hetzer R. Ultrasound decalcification of aortic stenosis. Thorac Cardiovasc Surg 2005. [DOI: 10.1055/s-2005-862028] [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: 10/26/2022]
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