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Neyestani Z, Khademi F, Teimourpour R, Amani M, Arzanlou M. Prevalence and mechanisms of ciprofloxacin resistance in Escherichia coli isolated from hospitalized patients, healthy carriers, and wastewaters in Iran. BMC Microbiol 2023; 23:191. [PMID: 37460988 DOI: 10.1186/s12866-023-02940-8] [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: 03/15/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND This study was aimed to evaluate the prevalence and molecular characteristics of ciprofloxacin resistance among 346 Escherichia coli isolates collected from clinical specimens (n = 82), healthy children (n = 176), municipal wastewater (n = 34), hospital wastewater (n = 33), poultry slaughterhouse wastewater (n = 12) and livestock (n = 9) slaughterhouse wastewater in Iran. METHODS Ciprofloxacin minimum inhibitory concentration (MIC) was determined by agar dilution assay. Phylogroups and plasmid-mediated quinolone resistance (PMQR) genes were identified using PCR. Mutations in gyrA, gyrB, parC, and parE genes and amino acid alterations were screened through sequencing assay. The effect of efflux pump inhibitor (PAβN) on ciprofloxacin MICs in ciprofloxacin-resistant isolates was investigated using the microdilution method. RESULTS In total, 28.03% of E. coli isolates were phenotypically resistant to ciprofloxacin. Based on sources of isolation, 64.63%, 51.51%, 33.33%, 14.70%, 10.22% and 8.33% of isolates from clinical specimens, hospital wastewater, livestock wastewater, municipal wastewater, healthy children and poultry wastewater were ciprofloxacin-resistant, respectively. Eighty-one point eighty-one percent (Ser-83 → Leu + Asp-87 → Asn; 78.78% and Ser-83 → Leu only; 3.03% (of ciprofloxacin-resistant E. coli isolates showed missense mutation in GyrA subunit of DNA gyrase, while no amino-acid substitution was noted in the GyrB subunit. DNA sequence analyses of the ParC and ParE subunits of topoisomerase IV exhibited amino-acid changes in 30.30% (Ser-80 → Ile + Glu-84 → Val; 18.18%, Ser-80 → Ile only; 9.10% and Glu-84 → Val only; 3.03%0 (and 15.38% (Ser-458 → Ala) of ciprofloxacin-resistant E. coli isolates, respectively. The PMQR genes, aac(6')-Ib-cr, qnrS, qnrB, oqxA, oqxB, and qepA were detected in 43.29%, 74.22%, 9.27%, 14.43%, 30.92% and 1.03% of ciprofloxacin-resistant isolates, respectively. No isolate was found to be positive for qnrA and qnrD genes. In isolates harboring the OqxA/B efflux pump, the MIC of ciprofloxacin was reduced twofold in the presence of PAβN, as an efflux pump inhibitor. The phylogroups B2 (48.45%) and A (20.65%) were the most predominant groups identified in ciprofloxacin-resistant isolates. CONCLUSIONS This study proved the high incidence of ciprofloxacin-resistant E. coli isolates in both clinical and non-clinical settings in Iran. Chromosomal gene mutations and PMQR genes were identified in ciprofloxacin resistance among E. coli population.
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Affiliation(s)
- Zohreh Neyestani
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Farzad Khademi
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Roghayeh Teimourpour
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mojtaba Amani
- Department of Medicinal Chemistry, Faculty of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohsen Arzanlou
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
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Aslani MR, Amani M, Moghadas F, Ghobadi H. Adipolin and IL-6 Serum Levels in Chronic Obstructive Pulmonary Disease. Adv Respir Med 2022; 90:391-398. [PMID: 36136851 PMCID: PMC9717330 DOI: 10.3390/arm90050049] [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: 07/04/2022] [Revised: 08/22/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022]
Abstract
Objective(s): One of the adipokines that have insulin-sensitizing properties is adipolin, whose reduced levels have been reported in obesity, oxidative stress, and inflammation. The present study investigated serum interleukin-6 (IL-6) and adipolin levels in chronic obstructive pulmonary disease (COPD) patients. Method: A control case study included 60 COPD patients and 30 healthy subjects in the research and measured adipolin and IL-6 serum levels. In addition, serum adipolin levels in COPD patients were assessed according to the GOLD grade. The relationship between serum adipolin levels and study variables were also analyzed. Results: The results showed reduced adipolin levels in COPD patients compared with healthy individuals (p < 0.001). Furthermore, increased levels of IL-6 were evident in the COPD group compared to the control group (p < 0.001). Adipolin serum levels were positively correlated with PFTs and negatively correlated with IL-6 levels. Conclusion: Decreased adipolin levels enhanced disease severity in COPD patients. It seems that the existence of a significant relationship between adipolin and IL-6 may indicate the role of adipolin in the pathophysiology of COPD.
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Affiliation(s)
- Mohammad Reza Aslani
- Lung Diseases Research Center, Ardabil University of Medical Sciences, Ardabil 5618953141, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad 9177948564, Iran
| | - Mojtaba Amani
- Department of Biophysics, School of Medicine, Ardabil University of Medical Sciences, Ardabil 5618953141, Iran
| | - Faranak Moghadas
- Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil 5618953141, Iran
| | - Hassan Ghobadi
- Lung Diseases Research Center, Ardabil University of Medical Sciences, Ardabil 5618953141, Iran
- Correspondence: or
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Aslani MR, Amani M, Masrori N, Boskabady MH, Ebrahimi HA, Chodari L. Crocin attenuates inflammation of lung tissue in ovalbumin-sensitized mice by altering the expression of endoplasmic reticulum stress markers. Biofactors 2022; 48:204-215. [PMID: 34856021 DOI: 10.1002/biof.1809] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/15/2021] [Indexed: 12/13/2022]
Abstract
Endoplasmic reticulum (ER) stress plays a pivotal role in the pathogenesis of asthma. The present study aimed to investigate the reducing or suppressing effects of crocin in ovalbumin (OVA)-sensitized mice on ER stress markers. Mice were divided into six groups (n = 5 per group) including control, OVA-sensitized (OVA), OVA-treated crocin (OVA-Cr25, OVA-Cr50, and OVA-Cr100 mg/kg), and OVA-treated dexamethasone (1 mg/kg), (OVA-Dexa) groups. Animals 5 later groups were sensitized to OVA and the treatment groups received intraperitoneally crocin/dexamethasone in the last 5 days of the model. At the end of the study, lung tissue was evaluated for airway inflammation, caspase 12 and CHOP protein levels, and expression of ER stress markers using real-time-PCR. Sensitization with OVA significantly caused airway inflammation and induction of ER stress in mice compared to the control group based on the elevated inflammatory cells and ER stress markers in the lung tissue. Treatment with crocin and dexamethasone reduced airway inflammation and suppressed ER stress markers. Interestingly, in the OVA-Cr100 group, the suppressive effects on ER stress apoptotic markers were comparable to the OVA-Dexa group. The results suggest that crocin mediates maladaptive ER stress conditions possibly by creating adaptive ER stress status and driving protein folding correctly.
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Affiliation(s)
- Mohammad Reza Aslani
- Faculty of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, Faculty of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mojtaba Amani
- Faculty of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Neghin Masrori
- Faculty of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohammad Hossein Boskabady
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Ali Ebrahimi
- Department of Pharmaceutics, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Leila Chodari
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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Ojaghi S, Mohammadi S, Amani M, Ghobadi S, Bijari N, Esmaeili S, Khodarahmi R. Sunset yellow degradation product, as an efficient water-soluble inducer, accelerates 1N4R Tau amyloid oligomerization: In vitro preliminary evidence against the food colorant safety in terms of "Triggered Amyloid Aggregation". Bioorg Chem 2020; 103:104123. [PMID: 32781343 DOI: 10.1016/j.bioorg.2020.104123] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 12/30/2022]
Abstract
Today, Alzheimer's disease (AD) as the most prevalent type of dementia turns into one of the most severe health problems. Neurofibrillary tangle (NFT), mostly comprised of fibrils formed by Tau, is a hallmark of a class of neurodegenerative diseases. Tau protein promotes assembly and makes stable microtubules that play a role in the appropriate function of neurons. Polyanionic cofactors such as heparin, and azo dyes, can induce aggregation of tau protein in vitro. Sunset Yellow is a food colorant used widely in food industries. In the current work, we introduced degradation product (DP) of Sunset Yellow as an effective inducer of Tau aggregation. Two Tau aggregation inducers were produced, and then the aggregation kinetics and the structure of 1N4R Tau amyloid fibrils were characterized using ThT fluorescence spectroscopy, X-Ray Diffraction (XRD), circular dichroism (CD) and atomic force microscopy (AFM). Also, the toxic effects of the induced aggregates on RBCs and SH-SY5Y cells were demonstrated by hemolysis and LDH assays, respectively. Both inducers efficiently accelerated the formation of the amyloid fibril. Along with the confirmation of the β-sheets structure in Tau aggregates by Far-UV CD spectra, X-ray diffractions revealed the typical cross-β diffraction pattern. The oligomer formation in the presence of DPs was also confirmed by AFM. The possible in vivo effect of artificial azo dyes on Tau aggregation should be considered seriously as a newly opened dimension in food safety and human health.
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Affiliation(s)
- Sara Ojaghi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Biology, Faculty of Sciences, Razi University, Kermanshah, Iran
| | - Soheila Mohammadi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mojtaba Amani
- Faculty of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Sirous Ghobadi
- Department of Biology, Faculty of Sciences, Razi University, Kermanshah, Iran
| | - Nooshin Bijari
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajjad Esmaeili
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Pouessel G, Antoine M, Lejeune S, Dubos F, Pierache A, Deschildre A, Akitani S, Amani M, Audry‐Degardin H, Bonnel C, Boulyana M, Chenaud M, Cixous E, Chagnon F, Combes S, Delepoule F, Delvart C, Dhaoui T, Glowacki M, Gnansounou M, Guilluy O, Heuclin T, Kalach N, Le Mée A, Louf S, Martinot A, Martinet A, Mitha S, Penel D, Scalbert M, Thumerelle C, Trochu C. The time course of anaphylaxis manifestations in children is diverse and unpredictable. Clin Exp Allergy 2019; 50:117-120. [DOI: 10.1111/cea.13510] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/11/2019] [Accepted: 09/06/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Guillaume Pouessel
- Department of Pediatrics Children’s Hospital Roubaix France
- Pediatric Pulmonology and Allergy Department Jeanne de Flandre Hospital CHRU Lille and Nord de France University Lille France
| | | | - Stéphanie Lejeune
- Pediatric Pulmonology and Allergy Department Jeanne de Flandre Hospital CHRU Lille and Nord de France University Lille France
| | - François Dubos
- Pediatric Emergency Unit and Infectious Diseases Lille France
| | - Adeline Pierache
- EA 2694 – Santé Publique: Epidemiology and Healthcare Quality Université Lille, CHU Lille Lille France
| | - Antoine Deschildre
- Pediatric Pulmonology and Allergy Department Jeanne de Flandre Hospital CHRU Lille and Nord de France University Lille France
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Lauterborn JC, Schultz MN, Le AA, Amani M, Friedman AE, Leach PT, Gall CM, Lynch GS, Crawley JN. Spaced training improves learning in Ts65Dn and Ube3a mouse models of intellectual disabilities. Transl Psychiatry 2019; 9:166. [PMID: 31182707 PMCID: PMC6557858 DOI: 10.1038/s41398-019-0495-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/14/2019] [Accepted: 03/23/2019] [Indexed: 12/29/2022] Open
Abstract
Benefits of distributed learning strategies have been extensively described in the human literature, but minimally investigated in intellectual disability syndromes. We tested the hypothesis that training trials spaced apart in time could improve learning in two distinct genetic mouse models of neurodevelopmental disorders characterized by intellectual impairments. As compared to training with massed trials, spaced training significantly improved learning in both the Ts65Dn trisomy mouse model of Down syndrome and the maternally inherited Ube3a mutant mouse model of Angelman syndrome. Spacing the training trials at 1 h intervals accelerated acquisition of three cognitive tasks by Ts65Dn mice: (1) object location memory, (2) novel object recognition, (3) water maze spatial learning. Further, (4) spaced training improved water maze spatial learning by Ube3a mice. In contrast, (5) cerebellar-mediated rotarod motor learning was not improved by spaced training. Corroborations in three assays, conducted in two model systems, replicated within and across two laboratories, confirm the strength of the findings. Our results indicate strong translational relevance of a behavioral intervention strategy for improving the standard of care in treating the learning difficulties that are characteristic and clinically intractable features of many neurodevelopmental disorders.
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Affiliation(s)
- J C Lauterborn
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - M N Schultz
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - A A Le
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - M Amani
- Department of Psychiatry and Human Behavior, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
- Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - A E Friedman
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
- Harvard University, Cambridge, MA, USA
| | - P T Leach
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
- Biogen Inc., Cambridge, MA, USA
| | - C M Gall
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - G S Lynch
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
- Department of Psychiatry and Human Behavior, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - J N Crawley
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA.
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Imani Rad H, Peeri H, Amani M, Mohammadnia A, Ogunniyi AD, Khazandi M, Venter H, Arzanlou M. Allicin prevents the formation of Proteus-induced urinary crystals and the blockage of catheter in a bladder model in vitro. Microb Pathog 2019; 132:293-301. [PMID: 31082531 DOI: 10.1016/j.micpath.2019.05.016] [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: 02/12/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 10/26/2022]
Abstract
Stone formation and catheter blockage are major complications of Proteus UTIs. In this study, we investigated the ability of allicin to inhibit P. mirabilis-induced struvite crystallization and catheter blockage using a synthetic bladder model. Struvite crystallization inhibition study was carried out using P. mirabilis lysate as urease enzyme source in synthetic urine (SU). Struvite productions were monitored by phase contrast light microscopy and measurements of pH, Mg2+ and Ca2+ precipitation and turbidity. A catheter blockage study was performed in a synthetic bladder model mimicking natural UTI in the presence of allicin at sub-MIC concentrations (MIC = 64 μg/ml). The results of crystallization study showed that allicin inhibited pH rise and consequently turbidity and precipitation of ions in a dose-dependent manner. The results of catheter blockage study showed that allicin at sub-MIC concentrations (2, 4, 8 μg/ml) significantly increased the time for catheter blockage to occur to 61, 74 and 92 h respectively compared to allicin-free control (48 h). In a similar way, the results showed that allicin delayed the increase of SU pH level in bladder model in a dose-dependent manner compared to allicin-free control. The results also showed that following the increase of allicin concentration, Mg2+ and Ca2+ deposition in catheters were much lower compared to allicin-free control, further confirmed by direct observation of the catheters' eyehole and cross sections. We conclude that allicin prevents the formation of Proteus-induced urinary crystals and the blockage of catheters by delaying pH increase and lowering Mg2+ and Ca2+ deposition in a dose-dependent manner.
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Affiliation(s)
- Hamed Imani Rad
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hadi Peeri
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mojtaba Amani
- Department of Clinical Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran; Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Alireza Mohammadnia
- Department of Information Technologies, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Abiodun David Ogunniyi
- Australian Centre for Antimicrobial Resistance Ecology, School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, South Australia, Australia
| | - Manouchehr Khazandi
- Australian Centre for Antimicrobial Resistance Ecology, School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, South Australia, Australia
| | - Henrietta Venter
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, 5000, Australia
| | - Mohsen Arzanlou
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
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Mazani M, Nemati A, Amani M, Haedari K, Mogadam RA, Baghi AN. The effect of probiotic yoghurt consumption on oxidative stress and inflammatory factors in young females after exhaustive exercise. J PAK MED ASSOC 2018; 68:1748-1754. [PMID: 30504936] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To evaluate the effect of probiotic yoghurt consumption on oxidative stress and inflammatory factors in young females after exhaustive exercise. METHODS TThis study included 27 healthy participants with an age range of 18-25. For two weeks, 450 grams of probiotic yoghurt and 450 grams of ordinary yoghurt were given to the supplement and control groups, respectively. Fasting blood samples were taken at baseline and at the end of study. At the end of the intervention, the participants were given one exhaustive exercise and then fasting blood samples were taken to test for blood antioxidant enzymes, inflammatory markers, and oxidative markers. Data were analyzed using descriptive statistics as well as paired and independent samples t-test. RESULTS In supplement group, the glutathione peroxidise (GPX) blood levels and serum levels of total antioxidant capacity (TAC) significantly increased at the end of two weeks of intervention (p<0.05). After intense physical activity, the blood levels of superoxide dismutase (SOD), GPX and serum levels of TAC significantly increased, whereas the serum level of tumour necrosis factor alpha (TNF-?), matrix metalloproteinase 2 (MMP2), matrix metalloproteinase 9 (MMP9), and malondialdehyde (MDA) significantly decreased in the supplement group compared to the control group (p<0.05). Besides, there were no significant changes in other biochemical factors. CONCLUSIONS Regular probiotic yoghurt consumption significantly modulated MMP2, MMP9 and some inflammatory factors, and thus guarded against exhaustive exercise-inducing oxidative injury in young healthy females.
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Affiliation(s)
- Mohammad Mazani
- Department of Clinical Biochemistry, School of Medicine, Ardabil University of Medical Sciences
| | - Ali Nemati
- Department of Clinical Biochemistry, School of Medicine, Ardabil University of Medical Sciences
| | - Mojtaba Amani
- Department of Clinical Biochemistry, School of Medicine, Ardabil University of Medical Sciences
| | - Kobra Haedari
- Department of Clinical Biochemistry, School of Medicine, Ardabil University of Medical Sciences
| | - Reza Alipanah Mogadam
- Department of Clinical Biochemistry, School of Medicine, Ardabil University of Medical Sciences
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Shokoohi R, Samadi MT, Amani M, Poureshgh Y. MODELING AND OPTIMIZATION OF REMOVAL OF CEFALEXIN FROM AQUATIC SOLUTIONS BY ENZYMATIC OXIDATION USING EXPERIMENTAL DESIGN. Braz J Chem Eng 2018. [DOI: 10.1590/0104-6632.20180353s20170383] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Patrad E, Niapour A, Farassati F, Amani M. Combination treatment of all-trans retinoic acid (ATRA) and γ-secretase inhibitor (DAPT) cause growth inhibition and apoptosis induction in the human gastric cancer cell line. Cytotechnology 2018; 70:865-877. [PMID: 29417442 DOI: 10.1007/s10616-018-0199-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 07/31/2017] [Accepted: 01/24/2018] [Indexed: 01/26/2023] Open
Abstract
Current medication for gastric cancer patients has a low success rate with resistance and side effects. According to recent studies, γ-secretase inhibitors is used as therapeutic drugs in cancer. Moreover, all-trans retinoic acid (ATRA) is a natural compound proposed for the treatment/chemo-prevention of cancers. The aim of this study was to explore the effects of ATRA in combination with N-[N-(3,5-difluorophenacetyl-l-alanyl)]-S-phenylglycine t-butyl ester (DAPT) as γ-secretase inhibitor on viability and apoptosis of the AGS and MKN-45 derived from human gastric cancer. AGS and MKN-45 gastric cancer cell lines were treated with different concentrations of ATRA or DAPT alone or ATRA plus DAPT. The viability, death detection and apoptosis of cells was examined by MTT assay and Ethidium bromide/acridine orange staining. The distribution of cells in different phases of cell cycle was also evaluated through flow cytometry analyses. In addition, caspase 3/7 activity and the expression of caspase-3 and bcl-2 were examined. DAPT and ATRA alone decreased gastric cancer cells viability in a concentration dependent manner. The combination of DAPT and ATRA exhibited significant synergistic inhibitory effects. The greater percentage of cells were accumulated in G0/G1 phase of cell cycle in combination treatment. The combination of DAPT and ATRA effectively increased the proportion of apoptotic cells and the level of caspase 3/7 activities compared to single treatment. Moreover, augmented caspase-3 up-regulation and bcl-2 down-regulation were found following combined application of DAPT and ATRA. The combination of DAPT and ATRA led to more reduction in viability and apoptosis in respect to DAPT or ATRA alone in the investigated cell lines.
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Affiliation(s)
- Elham Patrad
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Niapour
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Faris Farassati
- Molecular Medicine Laboratory, Department of Medicine, The University of Kansas Medical School (KUMC), Kansas City, KS, USA
| | - Mojtaba Amani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran. .,Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran.
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Moghadam AR, Patrad E, Tafsiri E, Peng W, Fangman B, Pluard TJ, Accurso A, Salacz M, Shah K, Ricke B, Bi D, Kimura K, Graves L, Najad MK, Dolatkhah R, Sanaat Z, Yazdi M, Tavakolinia N, Mazani M, Amani M, Ghavami S, Gartell R, Reilly C, Naima Z, Esfandyari T, Farassati F. Ral signaling pathway in health and cancer. Cancer Med 2017; 6:2998-3013. [PMID: 29047224 PMCID: PMC5727330 DOI: 10.1002/cam4.1105] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 04/10/2017] [Accepted: 04/14/2017] [Indexed: 12/12/2022] Open
Abstract
The Ral (Ras‐Like) signaling pathway plays an important role in the biology of cells. A plethora of effects is regulated by this signaling pathway and its prooncogenic effectors. Our team has demonstrated the overactivation of the RalA signaling pathway in a number of human malignancies including cancers of the liver, ovary, lung, brain, and malignant peripheral nerve sheath tumors. Additionally, we have shown that the activation of RalA in cancer stem cells is higher in comparison with differentiated cancer cells. In this article, we review the role of Ral signaling in health and disease with a focus on the role of this multifunctional protein in the generation of therapies for cancer. An improved understanding of this pathway can lead to development of a novel class of anticancer therapies that functions on the basis of intervention with RalA or its downstream effectors.
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Affiliation(s)
- Adel Rezaei Moghadam
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada
| | - Elham Patrad
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Elham Tafsiri
- Department of Pediatrics, Columbia Presbyterian Medical Center, New York, New York
| | - Warner Peng
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Benjamin Fangman
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Timothy J Pluard
- Saint Luke's Hospital, University of Missouri at Kansas City, Kansas City, Missouri
| | - Anthony Accurso
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Michael Salacz
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Kushal Shah
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Brandon Ricke
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Danse Bi
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Kyle Kimura
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Leland Graves
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Marzieh Khajoie Najad
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Roya Dolatkhah
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Zohreh Sanaat
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Mina Yazdi
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Naeimeh Tavakolinia
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Mohammad Mazani
- Pasteur Institute of Iran, Tehran, Iran.,Ardabil University of Medical Sciences, Biochemistry, Ardabil, Iran
| | - Mojtaba Amani
- Pasteur Institute of Iran, Tehran, Iran.,Ardabil University of Medical Sciences, Biochemistry, Ardabil, Iran
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada
| | - Robyn Gartell
- Department of Pediatrics, Columbia Presbyterian Medical Center, New York, New York
| | - Colleen Reilly
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Zaid Naima
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Tuba Esfandyari
- Department of Medicine, Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas City, Kansas
| | - Faris Farassati
- Research Service (151), Kansas City Veteran Affairs Medical Center & Midwest Biomedical Research Foundation, 4801 E Linwood Blvd, Kansas City, Missouri, 64128-2226
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12
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Salimzadeh H, Bishehsari F, Sauvaget C, Amani M, Hamzeloo R, Nikfarjam A, Maziar M, Merat S, Delavari A, Malekzadeh R. Colon cancer screening by fecal immunochemical testing in Iran. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx383.002] [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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13
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Amani M, Moosavi-Movahedi AA, Kurganov BI. What can we get from varying scan rate in protein differential scanning calorimetry? Int J Biol Macromol 2017; 99:151-159. [DOI: 10.1016/j.ijbiomac.2017.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 11/25/2022]
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14
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Abstract
Protein stability is a subject of interest by many researchers. One of the common methods to increase the protein stability is using the osmolytes. Many studies and theories analyzed and explained osmolytic effect by equilibrium thermodynamic while most proteins undergo an irreversible denaturation. In current study we investigated the effect of sucrose as an osmolyte on the thermal denaturation of pea seedlings amine oxidase by the enzyme activity, fluorescence spectroscopy, circular dichroism, and differential scanning calorimetry. All experiments are in agreement that pea seedlings amine oxidase denaturation is controlled kinetically and its kinetic stability is increased in presence of sucrose. Differential scanning calorimetry experiments at different scanning rates showed that pea seedlings amine oxidase unfolding obeys two-state irreversible model. Fitting the differential scanning calorimetry data to two-state irreversible model showed that unfolding enthalpy and T *, temperature at which rate constant equals unit per minute, are increased while activation energy is not affected by increase in sucrose concentration. We concluded that osmolytes decrease the molecular oscillation of irreversible proteins which leads to decline in unfolding rate constant.
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Affiliation(s)
- Mojtaba Amani
- Department of Biochemistry, Faculty of Medicine, Ardabil University of Medical Sciences (ArUMS), Daneshgah Street, Ardabil, 5618985991, Iran.
| | - Aboozar Barzegar
- Department of Biochemistry, Faculty of Medicine, Ardabil University of Medical Sciences (ArUMS), Daneshgah Street, Ardabil, 5618985991, Iran
| | - Mohammad Mazani
- Department of Biochemistry, Faculty of Medicine, Ardabil University of Medical Sciences (ArUMS), Daneshgah Street, Ardabil, 5618985991, Iran
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15
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Salimzadeh H, Delavari A, Amani M, Bishesari F, Malekzadeh R. Screening colonoscopy in family members of patients with colorectal cancer: A population-based study in Iran. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw385.17] [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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16
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Baghi AN, Mazani M, Nemati A, Amani M, Alamolhoda S, Mogadam RA. Anti-inflammatory effects of conjugated linoleic acid on young athletic males. J PAK MED ASSOC 2016; 66:280-284. [PMID: 26968277] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the efficacy of conjugated linoleic acid supplementation on some inflammatory factors in young healthy males during exhaustive exercise. METHODS The randomised double-blind controlled study was conducted at Ardabil University of Medical Sciences, Iran, from December 2012 to March2013, and comprised healthy male athletes 18-24 years of age. The subjects were randomly distributed into control and intervention groups. About 5.6 g/day conjugated linoleic acid supplement and oral paraffin (placebo) were given to intervention and control groups respectively daily for two weeks. Fasting blood samples were taken at baseline and at the end of the two weeks of intervention. The subjects underwent exhaustive exercise and then fasting blood samples were taken. Serum levels of tumour necrosis factor alpha, interleukin-6, high-sensitivity C-reactive protein, matrix metalloproteinases-2 and 9 were measured. RESULTS There were 23 subjects in the study, with 13(56.5%) in the supplemented group and 10(43.4%) in the control group. Serum levels of matrix metalloproteinases-2 and tumour necrosis factor alpha were significantly decreased in the supplemented group (p<0.05). After exhaustive exercise, serum levels of matrix metalloproteinases-2, high-sensitivity C-reactive protein and tumour necrosis factor alpha significantly decreased in the supplemented group compared to the control group(p<0.05). CONCLUSIONS Two-week administration of conjugated linoleic acid reduced the inflammatory factors following exhaustive exercise in young healthy males.
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Affiliation(s)
- Abbas Naghizadeh Baghi
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
| | - Mohammad Mazani
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
| | - Ali Nemati
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
| | - Mojtaba Amani
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
| | - Seyedyashar Alamolhoda
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
| | - Reza Alipanah Mogadam
- Department of Biochemistry, School of Medicine, ArdabilUniversity of Medical Sciences, Ardabil, Iran
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17
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Najafzadeh N, Mazani M, Abbasi A, Farassati F, Amani M. Low-dose all-trans retinoic acid enhances cytotoxicity of cisplatin and 5-fluorouracil on CD44(+) cancer stem cells. Biomed Pharmacother 2015; 74:243-51. [PMID: 26349992 DOI: 10.1016/j.biopha.2015.08.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 02/17/2015] [Accepted: 08/04/2015] [Indexed: 02/02/2023] Open
Abstract
Cis-diamminedichloridoplatinum(II)(CDDP)-based combination chemotherapy is frequently used in gastrointestinal cancer. The synergistic mechanism of all-trans retinoic acid (ATRA), cisplatin (CDDP) and 5-fluorouracil (5-FU) in combination remains unclear. Despite their potent antitumor properties, resistance to CDDP and 5-FU develops frequently in tumors. To clarify this mechanism, we determined the sensitivity to each drug and their combination in two gastrointestinal cancer stem cells (CSCs) subpopulation. Here, we report the identification and separation of CD44(+) cells from human gastric carcinoma (AGS) and human esophageal squamous cell carcinoma (KYSE-30) cancer cell lines by magnetic activated cell sorting (MACS). We allowed the CD44(±) cells to grow 6 days at a subtoxic concentration of ATRA and then treated with different concentration of CDDP and 5-FU for 24h. The cytotoxicity was examined by cell proliferation MTT assay. Additionally, AO/EB staining was used for detection of apoptotic cells. In order to determine whether the growth inhibition was also associated with changes in cell cycle distribution, cell cycle analysis was performed using flow cytometry. Low concentration of ATRA (1μM, 6days) followed by 5-FU and CDDP was found to be more effective than either drugs alone, thus resulting in synergistic cytotoxicity in Kyse-30 and AGSCD44(±) cells. Furthermore, there was an indication that the combination of ATRA with 5FU and CDDP caused an increase in cell cycle arrest in G2/M and G0/G1. We conclude that low concentration of ATRA enhances the cytotoxicity of CDDP and 5FU by facilitating apoptosis and cell cycle arrest in gastrointestinal CSCs and provide a rational basis for the design of novel, well-tolerated CDDP- and 5FU-based chemotherapy in human gastrointestinal carcinoma.
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Affiliation(s)
- Nowruz Najafzadeh
- Research laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohammad Mazani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Asadollah Abbasi
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Faris Farassati
- Department of Medicine, The University of Kansas Medical School, Molecular Medicine Laboratory, KUMC, Kansas City, KS, USA
| | - Mojtaba Amani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
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18
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Terai K, Borrego-Diaz E, Lovick D, Salacz M, Moghadam AR, Sanaat Z, Dolatkhah R, Patrad E, Amani M, Peng W, Esfandyari T, Farassati F. SC-01 * RalA IN BIOLOGY AND THERAPY OF MPNST IN CORRELATION TO CANCER STEM CELLS. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.143] [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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19
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Ranjbar-Omid M, Arzanlou M, Amani M, Shokri Al-Hashem SK, Amir Mozafari N, Peeri Doghaheh H. Allicin from garlic inhibits the biofilm formation and urease activity of Proteus mirabilis in vitro. FEMS Microbiol Lett 2015; 362:fnv049. [PMID: 25837813 DOI: 10.1093/femsle/fnv049] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2015] [Indexed: 12/30/2022] Open
Abstract
Several virulence factors contribute to the pathogenesis of Proteus mirabilis. This study determined the inhibitory effects of allicin on urease, hemolysin and biofilm of P. mirabilis ATCC 12453 and its antimicrobial activity against 20 clinical isolates of P. mirabilis. Allicin did not inhibit hemolysin, whereas it did inhibit relative urease activity in both pre-lysed (half-maximum inhibitory concentration, IC50 = 4.15 μg) and intact cells (IC50 = 21 μg) in a concentration-dependent manner. Allicin at sub-minimum inhibitory concentrations (2-32 μg mL(-1)) showed no significant effects on the growth of the bacteria (P > 0.05), but it reduced biofilm development in a concentration-dependent manner (P < 0.001). A higher concentration of allicin was needed to inhibit the established biofilms. Using the microdilution technique, the MIC90 and MBC90 values of allicin against P. mirabilis isolates were determined to be 128 and 512 μg mL(-1), respectively. The results suggest that allicin could have clinical applications in controlling P. mirabilis infections.
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Affiliation(s)
- Mahsa Ranjbar-Omid
- Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil 56157, Iran
| | - Mohsen Arzanlou
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil 56189, Iran
| | - Mojtaba Amani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil 56189, Iran
| | | | - Nour Amir Mozafari
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran 14496, Iran
| | - Hadi Peeri Doghaheh
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil 56189, Iran
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20
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Nadi MM, Ashrafi Kooshk MR, Mansouri K, Ghadami SA, Amani M, Ghobadi S, Khodarahmi R. Comparative Spectroscopic Studies on Curcumin Stabilization by Association to Bovine Serum Albumin and Casein: A Perspective on Drug-Delivery Application. International Journal of Food Properties 2014. [DOI: 10.1080/10942912.2013.853185] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Moosavi-Movahedi AA, Amani M, Moosavi-Nejad SZ, Hashemnia S, Ahmad F, Floris G, Mura A, Rezaei-Tavirani M, Hakimelahi GH, Saboury AA, Yousefi R. Thermal Dissection of Lentil Seedling Amine Oxidase Domains by Differential Scanning Calorimetry. Biosci Biotechnol Biochem 2014; 71:1644-9. [PMID: 17617729 DOI: 10.1271/bbb.70039] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The relationships between the structural and energetic domains of lentil seedling amine oxidase (LSAO) were investigated using modifiers that target the active site and the carbohydrate moiety of the enzyme. An irreversible inhibitor, aminoguanidine, specifically modified the active site of the lentil enzyme, whereas sodium metaperiodate cleaves carbohydrate moieties covalently bound to the native enzyme. Differential scanning calorimetry (DSC) measurements were made on the modified LSAOs. Deconvolution of the reversible thermal DSC profiles of the modified enzyme gave three subpeaks (energetic domains), each of which was assigned to one of the three structural domains of the native protein. Our results led us to conclude that deglycosylation of LSAO has no effect on thermal stability, whereas binding of the inhibitor imparts more stability to the enzyme.
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22
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Babri S, Amani M, Mohaddes G, Alihemmati A, Ebrahimi H. Erratum to: Protective Effects of Troxerutin on β-Amyloid (1-42)-Induced Impairments of Spatial Learning and Memory in Rats. NEUROPHYSIOLOGY+ 2012. [DOI: 10.1007/s11062-012-9328-3] [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: 11/24/2022]
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23
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Mahdavi R, Nemati A, Faizi-Khan I, Amani M, Hazrati S, Baghi AN, Mazani M, Amani F. Effects of Omega-3 Fatty Acids Supplementation on Oxidative Stress and MMP2/9 in Patients with Gastric Cancer During Chemotherapy. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/javaa.2012.1858.1863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Babri S, Amani M, Mohaddes G, Alihemmati A, Ebrahimi H. Protective Effects of Troxerutin on β-Amyloid (1-42)-Induced Impairments of Spatial Learning and Memory in Rats. NEUROPHYSIOLOGY+ 2012. [DOI: 10.1007/s11062-012-9309-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Sattari Z, Pourfaizi H, Dehghan G, Amani M, Moosavi-Movahedi AA. Thermal inactivation and conformational lock studies on glucose oxidase. Struct Chem 2012. [DOI: 10.1007/s11224-012-0136-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Nemati H, Khodarahmi R, Rahmani A, Ebrahimi A, Amani M, Eftekhari K. Serum lipid profile in psoriatic patients: correlation between vascular adhesion protein 1 and lipoprotein (a). Cell Biochem Funct 2012; 31:36-40. [PMID: 22753196 DOI: 10.1002/cbf.2857] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 04/21/2012] [Accepted: 06/08/2012] [Indexed: 11/09/2022]
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by excessive cellular replication. Apolipoproteins are genetically determined molecule whose role has been implied in cardiovascular pathology. Vascular adhesion protein-1 (VAP-1) is an adhesion molecule with an enzymatic activity that partakes in the migration process of lymphocytes into sites of inflammation. Our purpose was to evaluate the plasma lipid profiles, apolipoproteins (A1, B) and Lp (a) and VAP-1 in order to compare the lipid profile in psoriatic patients with non-affected persons and correlation between VAP-1 and Lp (a). We determined serum concentrations of lipids, lipoproteins , apolipoproteins and VAP-1 in 90 patients with psoriasis and 90 age matched controls. Serum Lp (a), apo A1 and apo B were measured by immunoprecipitation assays, and the lipids and lipoproteins were measured by enzymatic methods.The VAP-1 were measured by ELISA method. The mean levels of total cholesterol, LDL, apo B and VAP-1 in patients with psoriasis were found to be significantly higher than those of healthy subjects (P<0.05. In psoriatic patients, elevation of VAP-1 correlated with elevation of Lp (a) (p = 0.025). This study shows that high serum lipid level and VAP-1, is significantly more common in psoriasis. This fact may be responsible for higher prevalence of cardiovascular accident in psoriatic patients.
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Affiliation(s)
- Houshang Nemati
- Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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27
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Alaei L, A.Moosavi-Movahedi A, Hadi H, A. Saboury A, Ahmad F, Amani M. Thermal Inactivation and Conformational Lock of Bovine Carbonic Anhydrase. Protein Pept Lett 2012; 19:852-8. [DOI: 10.2174/092986612801619507] [Citation(s) in RCA: 6] [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: 11/12/2011] [Revised: 01/26/2012] [Accepted: 01/26/2012] [Indexed: 11/22/2022]
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28
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Khodarahmi R, Karimi SA, Ashrafi Kooshk MR, Ghadami SA, Ghobadi S, Amani M. Comparative spectroscopic studies on drug binding characteristics and protein surface hydrophobicity of native and modified forms of bovine serum albumin: possible relevance to change in protein structure/function upon non-enzymatic glycation. Spectrochim Acta A Mol Biomol Spectrosc 2012; 89:177-186. [PMID: 22261105 DOI: 10.1016/j.saa.2011.12.058] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 12/19/2011] [Accepted: 12/21/2011] [Indexed: 05/31/2023]
Abstract
The interaction between serum albumin (SA) and drugs has provided an interesting ground for understanding of drug effects, especially in drug distribution and drug-drug interaction on SA, in the case of multi-drug therapy. Determination of the impact of various factors on drug-protein interaction is especially important upon significant binding of drug to albumin. In the present study, the interaction of two drugs (furosemide and indomethacin) with native and modified albumins were investigated by using various spectroscopic methods. Fluorescence data indicated that 1:1 binding of drugs to bovine serum albumin (BSA) is associated with quenching of albumin intrinsic fluorescence. The Job's plot also confirmed that drug binds to BSA via mentioned stoichiometry. Analysis of the quenching and thermodynamic parameters indicated that intermolecular interactions between drug and albumin may change upon protein modification. The theoretical analyses also suggested some conformational changes of interacting side chains in subdomain IIA binding site (at the vicinity of W237), which were in good agreement with experimental data. Decrease of protein surface hydrophobicity (PSH) was also observed upon both albumin modification and drug binding.
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Affiliation(s)
- Reza Khodarahmi
- Medical Biology Research Center, Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, P.O. Box 67145-1673, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Moosavi-Movahedi A, Rajabzadeh H, Amani M, Nourouzian D, Zare K, Hadi H, Sharifzadeh A, Poursasan N, Ahmad F, Sheibani N. Acidic residue modifications restore chaperone activity of β-casein interacting with lysozyme. Int J Biol Macromol 2011; 49:616-21. [DOI: 10.1016/j.ijbiomac.2011.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 06/15/2011] [Accepted: 06/19/2011] [Indexed: 11/30/2022]
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30
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Amani M, Ettehad G, Afshar F. OL-073 Evaluation of serum concentration of endothelium nitric oxide synthase in Helicobacter pylori positive people. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60138-0] [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: 10/17/2022] Open
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31
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Ettehad G, Amani M, Parastar N. PP-080 Investigation on MMP-9 concentration in sera of people infected by Helicobacter pylori. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60232-4] [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: 10/17/2022] Open
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32
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Najafi I, Mousavi SM, Ghazanfari MH, Ghotbi C, Ramazani A, Kharrat R, Amani M. Quantifying the Role of Ultrasonic Wave Radiation on Kinetics of Asphaltene Aggregation in a Toluene–Pentane Mixture. Petroleum Science and Technology 2011; 29:966-974. [DOI: 10.1080/10916460903394144] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
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33
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Khodarahmi R, Soori H, Amani M. Study of cosolvent-induced alpha-chymotrypsin fibrillogenesis: does protein surface hydrophobicity trigger early stages of aggregation reaction? Protein J 2010; 28:349-61. [PMID: 19768527 DOI: 10.1007/s10930-009-9200-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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: 11/29/2022]
Abstract
The misfolding of specific proteins is often associated with their assembly into fibrillar aggregates, commonly termed amyloid fibrils. Despite the many efforts expended to characterize amyloid formation in vitro, there is no deep knowledge about the environment (in which aggregation occurs) as well as mechanism of this type of protein aggregation. Alpha-chymotrypsin was recently driven toward amyloid aggregation by the addition of intermediate concentrations of trifluoroethanol. In the present study, approaches such as turbidimetric, thermodynamic, intrinsic fluorescence and quenching studies as well as chemical modification have been successfully used to elucidate the underlying role of hydrophobic interactions (involved in early stages of amyloid formation) in alpha-chymotrypsin-based experimental system.
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Affiliation(s)
- Reza Khodarahmi
- Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, P. O. Box 67145-1673, Kermanshah, Iran.
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Moosavi-Movahedi AA, Mousavy SJ, Divsalar A, Babaahmadi A, Karimian K, Shafiee A, Kamarie M, Poursasan N, Farzami B, Riazi GH, Hakimelahi GH, Tsai FY, Ahmad F, Amani M, Saboury AA. The Effects of Deferiprone and Deferasirox on the Structure and Function of β-Thalassemia Hemoglobin. J Biomol Struct Dyn 2009; 27:319-39. [DOI: 10.1080/07391102.2009.10507319] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Divsalar A, Bagheri MJ, Saboury AA, Mansoori-Torshizi H, Amani M. Investigation on the Interaction of Newly Designed Anticancer Pd(II) Complexes with Different Aliphatic Tails and Human Serum Albumin. J Phys Chem B 2009; 113:14035-42. [DOI: 10.1021/jp904822n] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Adeleh Divsalar
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran, Department of Biological Sciences, Tarbiat Moallem University, Tehran, Iran, Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran, and Department of Biochemistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mohammad Javad Bagheri
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran, Department of Biological Sciences, Tarbiat Moallem University, Tehran, Iran, Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran, and Department of Biochemistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran, Department of Biological Sciences, Tarbiat Moallem University, Tehran, Iran, Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran, and Department of Biochemistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hassan Mansoori-Torshizi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran, Department of Biological Sciences, Tarbiat Moallem University, Tehran, Iran, Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran, and Department of Biochemistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mojtaba Amani
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran, Department of Biological Sciences, Tarbiat Moallem University, Tehran, Iran, Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran, and Department of Biochemistry, Ardabil University of Medical Sciences, Ardabil, Iran
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Amani M, Yousefi R, Moosavi-Movahedi A, Pintus F, Mura A, Floris G, Kurganov B, Saboury A. Structural Changes and Aggregation Process of Cu/Containing Amine Oxidase in the Presence of 2,2,2-Trifluoroethanol. Protein Pept Lett 2008; 15:521-7. [DOI: 10.2174/092986608784567636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Amani M, Elahwany MD. An origin of transfer from Lactococcus lactis subsp. lactis causes rearrangement in the temperature sensitive plasmids pUCB3522 and pJRS290. Acta Microbiol Immunol Hung 2007; 54:413-20. [PMID: 18088013 DOI: 10.1556/amicr.54.2007.4.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Cloning of the oriT region derived from Lactococcus lactis subsp. lactis into plasmids is expected to convert them into mobilizable plasmids in a suitable genetic background. In some cases, however, the cloning of oriT causes deleterious DNA rearrangements. In the work presented, oriT was cloned into two temperature sensitive plasmids, pJRS290 and pUCB3522. The plasmids were transformed into E. coli and electroporated into L. lactis. Restriction digestion of the plasmids derived from the cloned transformed cells showed fragment sizes different from those expected, indicating that rearrangements had occurred. Furthermore, the inability to successfully transform E. coli with one of the plasmids supports this conclusion.
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Affiliation(s)
- M. Amani
- 1 Alexandria University Section of Microbiology, Botany Department, Faculty of Science Alexandria Egypt
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Sarchahi AA, Maimandi A, Tafti AK, Amani M. Effects of acetylcysteine and dexamethasone on experimental corneal wounds in rabbits. Ophthalmic Res 2007; 40:41-8. [PMID: 18025839 DOI: 10.1159/000111158] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Accepted: 07/03/2007] [Indexed: 11/19/2022]
Abstract
Corneal wound healing often leads to the development of scar tissue with loss of transparency. Reconstitution of transparent corneal stroma depends on the regulation of the biosynthetic activities of post-lesional keratocytes as well as to a large extent on the limitation of matrix degradation. It has been shown that 3% concentration of N-acetylcysteine (NAC) improves the healing time of corneal wounds but some corneal haze remains. On the other hand, topical corticosteroids may retard the corneal wound healing but decrease the haze. Thus, the aim of the study was to evaluate whether adding dexamethasone to NAC could reduce the side effects of the two drugs. In this study, experimental corneal wounds were created surgically, up to the depth of one half of the stroma in the center of both eyes of all rabbits. The left eyes were treated topically with 0.9% NaCl as controls and the right eyes were treated with a combination of one drop of 3% NAC and one drop of 0.1% dexamethasone, 6 times per day. Corneal wounds were measured by fluorescein staining every day. The results indicated that the combination of acetylcysteine and dexamethasone significantly increased the mean healing time compared to the control group (p < 0.05). Clinical and histopathologic examinations revealed that the corneal haze in the treatment group was greater than in the control group. It is concluded that treatment of the eyes by a combination of 3% acetylcysteine and 0.1% dexamethasone (if used from the first day of ulceration) may retard the corneal wound healing in rabbits.
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Affiliation(s)
- A A Sarchahi
- Department of Clinical Studies, University of Shiraz, Shiraz, Iran.
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39
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Moosavi-Movahedi AA, Pirzadeh P, Hashemnia S, Ahmadian S, Hemmateenejad B, Amani M, Saboury AA, Ahmad F, Shamsipur M, Hakimelahi GH, Tsai FY, Alijanvand HH, Yousefi R. Fibril formation of lysozyme upon interaction with sodium dodecyl sulfate at pH 9.2. Colloids Surf B Biointerfaces 2007; 60:55-61. [PMID: 17616361 DOI: 10.1016/j.colsurfb.2007.05.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Revised: 05/25/2007] [Accepted: 05/25/2007] [Indexed: 11/26/2022]
Abstract
Fibril formation seems to be a general property of all proteins. Its occurrence in hen or human lysozyme depends on certain conditions, namely acidic pHs or the presence of some additives. This paper studies the interaction of lysozyme with sodium dodecyl sulfate (SDS) at pH 9.2, using UV-visible spectrophotometry, circular dichroism (CD) spectropolarimetry, electron microscopy (EM) and chemometry. Based on observations such as the strange increase in absorbance at 650nm (pH 9.2) and the presence of intermediates, it is assumed that lysozyme fibrils have been formed at pH 9.2 in the presence of SDS as an anionic surfactant. Thioflavin T emission fluorescence and an EM image confirmed this assumption. beta-cyclodextrin was then used as a turbidity inhibitor to establish its effect on the distribution of intermediates that participate in fibril formation.
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40
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Amani M, Moosavi-Movahedi AA, Floris G, Mura A, Kurganov BI, Ahmad F, Saboury AA. Two-state irreversible thermal denaturation of Euphorbia characias latex amine oxidase. Biophys Chem 2007; 125:254-9. [PMID: 16971037 DOI: 10.1016/j.bpc.2006.08.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2006] [Revised: 08/07/2006] [Accepted: 08/17/2006] [Indexed: 11/26/2022]
Abstract
Thermal denaturation of Euphorbia latex amine oxidase (ELAO) has been studied by enzymatic activity, circular dichroism and differential scanning calorimetry. Thermal denaturation of ELAO is shown to be an irreversible process. Checking the validity of two-state it really describes satisfactorily the thermal denaturation of ELAO. Based on this model we obtain the activation energy, parameter T(*) (the absolute temperature at which the rate constant of denaturation is equal to 1 min(-1)), and total enthalpy of ELAO denaturation. HPLC experiments show that the thermal denatured enzyme conserves its dimeric state. The N(2)-->kD(2) model for thermal denaturation of ELAO is proposed: where N(2) and D(2) are the native and denatured dimer, respectively.
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Affiliation(s)
- Mojtaba Amani
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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41
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Rezaei Tavirani M, Moghaddamnia SH, Ranjbar B, Amani M, Marashi SA. Conformational study of human serum albumin in pre-denaturation temperatures by differential scanning calorimetry, circular dichroism and UV spectroscopy. BMB Rep 2006; 39:530-6. [PMID: 17002873 DOI: 10.5483/bmbrep.2006.39.5.530] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [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: 11/20/2022] Open
Abstract
Thermal conformational changes of human serum albumin (HSA) in phosphate buffer, 10 mM at pH = 7 are investigated using differential scanning calorimetric (DSC), circular dichroism (CD) and UV spectroscopic methods. The results indicate that temperature increment from 25 degrees C to 55 degrees C induces reversible conformational changes in the structure of HSA. Conformational change of HSA are shown to be a three-step process. Interestingly, melting temperature of the last domain is equal to the maximum value of fever in pathological conditions, i.e. 42 degrees C. These conformational alterations are accompanied by a mild alteration of secondary structures. Study of HSA-SDS (sodium dodecyl sulphate) interaction at 45 degrees C and 35 degrees C reveals that SDS affects the HSA structure at least in three steps: the first two steps result in more stabilization and compactness of HSA structure, while the last one induces the unfolding of HSA. Since HSA has a more affinity for SDS at 45 degrees C compared to 35 degrees C, It is suggested that the net negative charge of HSA is decreased in fever, which results in the decrease of HSA-associated cations and plasma osmolarity, and consequently, heat removal via the increase in urine volume.
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42
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Moosavi-Movahedi AA, Gharanfoli M, Jalili S, Ahmad F, Chamani J, Hakimelahi GH, Sadeghi M, Amani M, Saboury AA. The Correlation of RNase A Enzymatic Activity with the Changes in the Distance between Nε2-His12 and Nδ1-His119 Upon Addition of Stabilizing and Destabilizing Salts. Protein J 2006; 25:117-25. [PMID: 16862454 DOI: 10.1007/s10930-006-0003-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2005] [Indexed: 11/29/2022]
Abstract
The effect of stabilizing and destabilizing salts on the catalytic behavior of ribonuclease A (RNase A) was investigated at pH 7.5 and 25 degrees C, using spectrophotometric, viscometric and molecular dynamic methods. The changes in the distance between N(epsilon2) of His(12) and N(delta1) of His(119) at the catalytic center of RNase A upon the addition of sodium sulfate, sodium hydrogen sulfate and sodium thiocyanate were evaluated by molecular dynamic methods. The compactness and expansion in terms of Stokes radius of RNase A upon the addition of sulfate ions as kosmotropic salts, and thiocyanate ion as a chaotropic salt, were estimated by viscometric measurements. Enzyme activity was measured using cytidine 2', 3'-cyclic monophosphate as a substrate. The results from the measurements of distances between N(epsilon2) of His(12) and N(delta1) of His(119) and Stokes radius suggest (i) that the presence of sulfate ions decreases the distance between the catalytic His residues and increases the globular compactness, and (ii) that there is an expansion of the enzyme surface as well as elongation of the catalytic center in the presence of thiocyanate ion. These findings are in agreement with activity measurements.
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Abstract
The kinetics of thermal dissociation of superoxide dismutase (SOD) was studied in 0.05 M Tris-HCl buffer at pH 7.4 containing 10(-4) M EDTA. The number of conformational locks and contact areas and amino acid residues of dimers of SOD were obtained by kinetic analysis and biochemical calculation. The cleavage bonds between dimers of SOD during thermal dissociation and type of interactions between specific amino acid residues were also simulated. Two identical contact areas between two subunits were identified. Cleavage of these contact areas resulted in dissociation of the subunits, with destruction of the active centers, and thus, lost of activity. It is suggested that the contact areas interact with active centers by conformational changes involving secondary structural elements.
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Affiliation(s)
- J Hong
- Institute of Biochemistry and Biophysics, University of Tehran, Iran
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Yousefi R, Ardestani SK, Saboury AA, Kariminia A, Zeinali M, Amani M. Investigation on the Surface Hydrophobicity and Aggregation Kinetics of Human Calprotectin in the Presence of Calcium. BMB Rep 2005; 38:407-13. [PMID: 16053707 DOI: 10.5483/bmbrep.2005.38.4.407] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 11/20/2022] Open
Abstract
Calcium and zinc binding protein, calprotectin is a multifunctional protein with broad spectrum antimicrobial and antitumoural activity. It was purified from human neutrophil, using a two-step ion exchange chromatography. Since surface hydrophobicity of calprotectin may be important in membrane anchoring, membrane penetration, subunits oligomerization and some biological roles of protein, in this study attempted to explore the effect of calcium in physiological range on the calprotectin lipophilicity. Incubation of human calprotectin (50 microg/ml) with different calcium concentrations showed that 1-anilino-8-naphthalene sulfonic acid (ANS) fluorescence intensity of the protein significantly elevates with calcium in a dose dependent manner, suggesting an increase in calprotectin surface hydrophobicity upon calcium binding. Our study also indicates that calcium at higher concentrations (6, 8 and 10 mM) induces aggregation of human calprotectin. Our finding demonstrates that the starting time and the rate constant of calprotectin aggregation depend on the calcium concentration.
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Affiliation(s)
- Reza Yousefi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Mardi A, Rahimi G, Amani M, Mashoufi M, Kheirkhah M, Ghaffari NM, Pierovi T, Soleimani RJ, Vanlioglu F, Karaman Y, Bingol B, Tavmergen E, Akdogan A, Akman A, Levi R, Tavmergen GEN, Ates U, Seyhan A, Atmaca U, Ortakuz S, Ata B, Akar S, Usta T, Özdemir B, Sidal B, Yoldemir T, Gee A, Sutherland P, Bowman M, Fraser IS, Haydardedeoglu B, Bagis T, Kilicdag EB, Simsek E, Aslan E, Zeyneloglu HB, Kahyaoglu S, Turgay I, Ertas E, Yilmaz B, Var T, Batioglu S, Muftuoglu K, Tekcan C, Naki MM, Uysal A, Güzin K, Yücel N, Kanadikirik F, Kelekci S, Savan K, Kalyoncu S, Gokturk U, Oral H, Mollamahmutoglu L, Ertas IE, Mollamahmutoglu L, Kahveci S, Dogan M, Mollamahmutoglu L, Isik A, Saygili U, Gol M, Koyuncuoglu M, Uslu T, Erten O, Ciftci B, Biri A, Bozkurt N, Karabacak O, Himmetoglu O, Amir JN, Nouri M, Hascalik S, Celik O, Parlakpinar H, Mizrak B, Ozsahin M, Önder C, Gezginc K, Colakoglu M, Demir SC, Cetin MT, Kadayifci O, Güzel AB, Polat I, Yildirim G, Özdemir A, Tekirdag AI, Kizkin S, Engin-Ustun Y, Ustun Y, Ozcan C, Serbest S, Ozisik HI, Ergenoglu M, Goker ENT, Uckuyu A, Ozcimen EE, Nisanoglu O, Onal C, Akgun S, Koc S, Cebi Z, Sönmez S, Yasar L, Küpelioglu L, Bilecan S, Aygün M, Zebitay AG, Dursun P, Ötegen Ü, Bozdag G, Yarali H, Demirci F, Mun S, Eraydin E, Sadik S, Sipahi C, Bayol Ü, Sarikaya S, Garipoglu DE, Delilbasi L, Gursoy R, Engin-Ustun Y, Meydanli MM, Atmaca R, Kafkasli A, Canda MT, Kucuk M, Bagriyanik HA, Ozyurt D, Canda T, Güven MA, Tamsoy S, Kaymak O, Ozkale D, Okyay RE, Neslihanoglu R, Mollamahmutoglu L, Basaran A, Gultekin M, Saygili YE, Esinler I, Bayer U, Gunalp S, Aksu T, Gultekin M, Leventerler H, Taga S, Cetin T, Solmaz S, Dikmen N, Karalök H, Ilter E, Tufekci C, Yilmaz S, Karalök AE, Batur O, Kilicdag E, Haydardedeoglu B, Tarim E, Api M, Gültekin E, Görgen H, Cetin A, Yayla M, Özkilic T, Arikan I, Abali R, Arikan D, Bozkurt S, Demir B, Gunalp S, Erden AC, Özcan J, Yazicioglu F, Demirbas R. Endocrinology and reproductive medicine. Arch Gynecol Obstet 2005. [DOI: 10.1007/bf02954773] [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: 10/21/2022]
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Amani M, Moosavi-Movahedi AA, Floris G, Longu S, Mura A, Moosavi-Nejad SZ, Saboury AA, Ahmad F. Comparative Study of the Conformational Lock, Dissociative Thermal Inactivation and Stability of Euphorbia Latex and Lentil Seedling Amine Oxidases. Protein J 2005; 24:183-91. [PMID: 16096724 DOI: 10.1007/s10930-005-7842-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/27/2022]
Abstract
The thermal stability of copper/quinone containing amine oxidases from Euphorbia characias latex (ELAO) and lentil seedlings (LSAO) was measured in 100 mM potassium phosphate buffer (pH 7.0) following changes in absorbance at 292 nm. ELAO was shown to be about 10 degrees C more stable than LSAO. The dissociative thermal inactivation of ELAO was studied using putrescine as substrate at different temperatures in the range 47-70 degrees C, and a "conformational lock" was developed using the theory pertaining to oligomeric enzyme. Moreover ELAO was shown to be more stable towards denaturants than LSAO, as confirmed by dodecyl trimethylammonium bromide denaturation curves. A comparison of the numbers of contact sites in inter-subunits of ELAO relative to LSAO led us to conclude that the higher stability of ELAO to temperature and towards denaturants was due to the presence of larger number of contact sites in the conformational lock of the enzyme. This study also gives a putative common mechanism for thermal inactivation of amine oxidases and explains the importance of C-terminal conserved amino acids residues in this class of enzymes.
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Affiliation(s)
- M Amani
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Amani M, Humphreys BL. Analysis of characteristics of serials held by libraries in PHILSOM which are not in the NLM collection. Bull Med Libr Assoc 1982; 70:324-8. [PMID: 7116020 PMCID: PMC226718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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48
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Amani M. [Not Available]. Population (Paris) 1982; 37:175-177. [PMID: 21213869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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49
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Amani M, Zandjani H. The principles of population policy (with special reference to Iran). Genus 1977; 33:141-50. [PMID: 12309031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023] Open
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50
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S. T, Chasteland JC, Amani M, Aminzadeh F, Khazaneh H, Moezi A, Puech O. Étude sur la fécondité et quelques caractéristiques démographiques des femmes mariées dans quatre zones rurales d'Iran. Population (French Edition) 1969. [DOI: 10.2307/1529750] [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: 11/10/2022]
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