110 results on '"Ravanbakhsh M."'
Search Results
2. Unique NSGA-II and MOPSO algorithms for improved dynamic cellular manufacturing systems considering human factors
- Author
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Azadeh, A., Ravanbakhsh, M., Rezaei-Malek, M., Sheikhalishahi, M., and Taheri-Moghaddam, A.
- Published
- 2017
- Full Text
- View/download PDF
3. Microbiële biodiversiteit maakt middelen overbodig
- Author
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Jousset, A., Xaxiri, E., Bijman, V., Hoff, G., Ravanbakhsh, M., Jousset, A., Xaxiri, E., Bijman, V., Hoff, G., and Ravanbakhsh, M.
- Abstract
Plantenziektes zijn een uitdaging voor de Nederlandse teelt. Ziektes kunnen hele oogsten vernietigen en worden steeds lastiger om onder controle te houden. Elk jaar worden meer chemische gewasbeschermingsmiddelen verboden en ziekteverwekkers worden sneller multiresistent tegen de overblijvende middelen. En het vervangen van een chemisch middel door een biologisch middel lukt niet zomaar. Maar kan het zo zijn, dat we een denkfout maken en dat het mogelijk is dat we ziektes zonder chemische of biologische middelen onder controle kunnen krijgen?
- Published
- 2021
4. The effect of alpha-lipoic acid supplementation and Electrical isotonic contraction on anthropometric measurements, body composition, angiogenesis factors, sirtunin-1, and PGC1-α in obese people undergoing a weight loss diet
- Author
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Zakizadeh E, Helli B, Mohammadshahi M, Ravanbakhsh M, and Angali Ka
- Subjects
medicine.medical_specialty ,Endocrinology ,Angiogenesis ,Weight loss ,Chemistry ,Alpha-Lipoic Acid ,Internal medicine ,Isotonic ,medicine ,Composition (visual arts) ,Anthropometry ,medicine.symptom - Abstract
Background: The anti-obesity effects of Alpha-lipoic acid (α-LA) and isotonic contraction has been reported. However, the underlying mechanism is not fully understood. This study aimed to investigate the effect of α-LA supplementation and Faradic (an electrical stimulating system) on anthropometric parameters, body composition, VEGF, Sirtunin-1, nitric oxide (NO), and PGC1-α in obese people undergoing a weight loss regime.Methods: This randomized clinical trial was carried out on 100 obese adults. The subjects were randomly assigned to four groups of 25 subjects including Faradic, α-LA, -α-LA+Faradic, and control. A Bio Impedance Analyzer (BIA) was used to estimate anthropometric measurements including weight, body mass index (BMI), fat mass, and fat free mass. The serum levels of Sirtunin-1, PGC1-α, VEGF, and NO levels were measured. All measurements were done at baseline and after 8 weeks of intervention.Results: A significant weight reduction was observed in all four groups compared to baseline (p=Name of the registry: Iranian Registry of Clinical TrialsTrial registration number: IRCT20131117015424N2Date of registration: https://www.irct.ir/search/result?query=IRCT20131117015424N2URL of trial registry record: 04/04/2018
- Published
- 2020
5. Microbial modulation of plant ethylene signaling: ecological and evolutionary consequences
- Author
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Ravanbakhsh, M., Sasidharan, R., Voesenek, L.A.C.J., Kowalchuk, G.A., Jousset, A.L.C., Sub Ecology and Biodiversity, Sub Plant Ecophysiology, Ecology and Biodiversity, and Plant Ecophysiology
- Subjects
0106 biological sciences ,0301 basic medicine ,Microbiology (medical) ,Ethylene ,Evolution ,Physiology ,Computational biology ,Review ,Environment ,01 natural sciences ,Microbiology ,Holobiont ,lcsh:Microbial ecology ,03 medical and health sciences ,chemistry.chemical_compound ,Microbial ecology ,Gene Expression Regulation, Plant ,Stress, Physiological ,Microbiome ,Symbiosis ,biology ,Bacteria ,Microbiota ,fungi ,food and beverages ,Plant ,Ethylenes ,Plants ,biology.organism_classification ,Phenotype ,ACC deaminase ,Plant ecology ,030104 developmental biology ,chemistry ,lcsh:QR100-130 ,Plant hormone ,Signal transduction ,010606 plant biology & botany ,Signal Transduction - Abstract
The plant hormone ethylene is one of the central regulators of plant development and stress resistance. Optimal ethylene signaling is essential for plant fitness and is under strong selection pressure. Plants upregulate ethylene production in response to stress, and this hormone triggers defense mechanisms. Due to the pleiotropic effects of ethylene, adjusting stress responses to maximize resistance, while minimizing costs, is a central determinant of plant fitness. Ethylene signaling is influenced by the plant-associated microbiome. We therefore argue that the regulation, physiology, and evolution of the ethylene signaling can best be viewed as the interactive result of plant genotype and associated microbiota. In this article, we summarize the current knowledge on ethylene signaling and recapitulate the multiple ways microorganisms interfere with it. We present ethylene signaling as a model system for holobiont-level evolution of plant phenotype: this cascade is tractable, extremely well studied from both a plant and a microbial perspective, and regulates fundamental components of plant life history. We finally discuss the potential impacts of ethylene modulation microorganisms on plant ecology and evolution. We assert that ethylene signaling cannot be fully appreciated without considering microbiota as integral regulatory actors, and we more generally suggest that plant ecophysiology and evolution can only be fully understood in the light of plant-microbiome interactions.
- Published
- 2018
6. Optimization of plant hormonal balance by microorganisms prevents plant heavy metal accumulation
- Author
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Ravanbakhsh, M., Jousset, A.L.C., Kowalchuk, G.A., Sub Ecology and Biodiversity, and Ecology and Biodiversity
- Subjects
Ethylene ,Plant beneficial microbes ,Taverne ,ACC deaminase ,Cadmium - Abstract
Heavy metal contamination is a threat to global food safety. Reducing heavy metal uptake in plants is a promising way to make plants safer, yet breeding the right set of traits can be tedious. We test whether microorganisms are able to impact the plant’s hormonal balance hereby helping to manage plant heavy metal uptake. We focus on ethylene, a plant hormone regulating plant stress tolerance and nutrition. We grew three phylogenetically distinct plants, Rumex palustris, Alcea aucheri and Arabidopsis thaliana, on a cadmium-spiked soil. Plants roots were coated with the bacterium Pseudomonas putida UW4, which degrades the precursor of ethylene, or an isogenic ACC deaminase-deficient mutant lacking this ability. We followed ethylene concentrations, plant growth and cadmium uptake. Wildtype bacteria reduced shoot cadmium concentration by up to 35% compared to the control, while the mutant increased cadmium concentration. This effect was linked to ethylene, which was consistently positively correlated with cadmium concentration. We therefore propose that bacteria modulating plant hormonal balance may offer new possibilities to improve specific aspects of plant phenotype, in the present context reducing heavy metal. They may thus pave the way for new strategies to improve food safety in a context of the widespread soil contamination.
- Published
- 2019
7. Root-associated microorganisms reprogram plant life history along the growth–stress resistance tradeoff
- Author
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Ravanbakhsh, M., Kowalchuk, G.A., Jousset, A.L.C., Sub Ecology and Biodiversity, and Ecology and Biodiversity
- Subjects
Taverne - Abstract
Growth–defense tradeoffs are a major constraint on plant evolution. While the genetics of resource allocation is well established, the regulatory role of plant-associated microorganisms is still unclear. Here, we demonstrate that plant-associated microorganisms can reposition the plant phenotype along the same growth–defense tradeoff that determines phenotypic effects of plant mutations. We grew plants with microorganisms altering ethylene balance, a key hormone regulating plant investment into growth and stress tolerance. Microbial ethylene reduction had a similar effect to mutations disrupting ethylene signaling: both increased plant growth but at the cost of a strong stress hypersensitivity. We conclude that microbial impact on phenotype can offset the effects of mutations and that apparent plant growth promotion has strong pleiotropic effects. This study confirms that plant life history should be addressed as a joint product of plant genotype and its associated microbiota.
- Published
- 2019
8. Optimization of plant hormonal balance by microorganisms prevents plant heavy metal accumulation
- Author
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Ravanbakhsh, M., Jousset, A.L.C., Kowalchuk, G.A., Sub Ecology and Biodiversity, and Ecology and Biodiversity
- Subjects
Environmental Engineering ,Health, Toxicology and Mutagenesis ,0211 other engineering and technologies ,Arabidopsis ,chemistry.chemical_element ,Context (language use) ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Plant Roots ,Ethylene ,Soil ,Plant Growth Regulators ,Plant beneficial microbes ,Taverne ,Botany ,Environmental Chemistry ,Arabidopsis thaliana ,Soil Pollutants ,Carbon-Carbon Lyases ,Rumex ,Waste Management and Disposal ,Malvaceae ,0105 earth and related environmental sciences ,021110 strategic, defence & security studies ,Cadmium ,biology ,Pseudomonas putida ,fungi ,food and beverages ,Ethylenes ,Plants ,biology.organism_classification ,ACC deaminase ,Pollution ,Soil contamination ,Bioaccumulation ,chemistry ,Shoot ,Rumex palustris ,Plant hormone - Abstract
Heavy metal contamination is a threat to global food safety. Reducing heavy metal uptake in plants is a promising way to make plants safer, yet breeding the right set of traits can be tedious. We test whether microorganisms are able to impact the plant’s hormonal balance hereby helping to manage plant heavy metal uptake. We focus on ethylene, a plant hormone regulating plant stress tolerance and nutrition. We grew three phylogenetically distinct plants, Rumex palustris, Alcea aucheri and Arabidopsis thaliana, on a cadmium-spiked soil. Plants roots were coated with the bacterium Pseudomonas putida UW4, which degrades the precursor of ethylene, or an isogenic ACC deaminase-deficient mutant lacking this ability. We followed ethylene concentrations, plant growth and cadmium uptake. Wildtype bacteria reduced shoot cadmium concentration by up to 35% compared to the control, while the mutant increased cadmium concentration. This effect was linked to ethylene, which was consistently positively correlated with cadmium concentration. We therefore propose that bacteria modulating plant hormonal balance may offer new possibilities to improve specific aspects of plant phenotype, in the present context reducing heavy metal. They may thus pave the way for new strategies to improve food safety in a context of the widespread soil contamination.
- Published
- 2018
9. Combining nanomaterials and phages for enhanced bacterial wilt control
- Author
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Ravanbakhsh, M., Kowalchuk, G.A., Jousset, A.L.C., Ravanbakhsh, M., Kowalchuk, G.A., and Jousset, A.L.C.
- Abstract
Ralstonia solanacearum is plant-pathogenic bacterium caused bacterial wilt disease in a wide range of plant hosts. We proposed bacteriophage therapy as one of the most promising approaches to control this bacterium in our previous experiments. However, the application of the bacteriophage trophy for plant disease control is currently hindered by pathogen resistance development to bacteriophages and the limitation of movement within plant tissues. The goal of our study is to produce an enhanced virulence synthetic bacteriophage consortium against Ralstonia solanacearum, by combining phage trophy and nano-technology. Our results showed that the combination of bacteriophage and silicon nano-particle decreased the ability of bacteria evolving resistant to bacteriophage during the course of evolution, in vitro. We have tested this combination in roses plants under greenhouse condition and showed higher resistance and less disease severity in host plants. We concluded that the combination of nanomaterials and phages can be an effective biocontrol agent to protect the crop plants against phytopathogenic bacteria in agriculture and horticulture.
- Published
- 2019
10. Combining nanomaterials and phages for enhanced bacterial wilt control
- Author
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Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Kowalchuk, G.A., Jousset, A.L.C., Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Kowalchuk, G.A., and Jousset, A.L.C.
- Published
- 2019
11. Root-associated microorganisms reprogram plant life history along the growth–stress resistance tradeoff
- Author
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Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Kowalchuk, G.A., Jousset, A.L.C., Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Kowalchuk, G.A., and Jousset, A.L.C.
- Published
- 2019
12. Optimization of plant hormonal balance by microorganisms prevents plant heavy metal accumulation
- Author
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Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Jousset, A.L.C., Kowalchuk, G.A., Sub Ecology and Biodiversity, Ecology and Biodiversity, Ravanbakhsh, M., Jousset, A.L.C., and Kowalchuk, G.A.
- Published
- 2019
13. Manipulation of plant ethylene balance by soil microbiota: a holobiont perspective to stress tolerance
- Author
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Ravanbakhsh, M., Sub Ecology and Biodiversity, Kowalchuk, George, Jousset, Alexandre, and Sasidharan, Rashmi
- Subjects
Ethylene ,Phenotype ,Evolution ,Physiology ,Microbiota ,Microbiome ,Plant ,ACC deaminase ,Holobiont - Abstract
Plants continuously adjust their physiology and phenotype to stressors. Plant hormones and modulators mediate the adaptation of the plant to changing environmental conditions by allocating resources precisely between growth and stress tolerance. Plant responses to stressors are typically studied without considering the associated microbiota. However, plants live in association with a wide range of microbiota, which alter the whole plant life history. Here, we would like to place microbiota as an important determinant of plant mediate stress responses. Microbiota could filter stress for plants or alter the plant physiology and hormonal balance. Ethylene is one of the most important regulators for plant growth, development and response to stressors. Plant ethylene pathway is modulated by plants, but also by associated microbiota; microbiota could up or down regulate plant ethylene production by a wide range of bacterial traits, and potentially affect ethylene-mediated regulation of stress responses. Studies on plant physiology confirm the crucial role of ethylene in stress tolerance. However, in plant-microbe interactions, ethylene reduction by the action of ACC deaminase enzyme of microbiota is mainly considered as a trait that promotes plant growth, especially under stress conditions. Here, we study the ACC deaminase enzyme of bacteria in the context of recent advances of ethylene studies in plant physiology. We show that reduction of ethylene by bacteria decreases the cadmium uptake in plants, as ethylene is an important modulator of nutrient uptake. As large-scale soil decontamination is practically impossible, using microbiota as biotechnological tools to reduce heavy metals in soils may contribute to safer food and feed production. We further show that ethylene reduction by microbiota may alter plant stress tolerance. While ethylene reduction by ACC deaminase-producing microbiota might have some advantages for plants in non-stress conditions, it may also interfere with common plant responses to stressors such as heavy metal or submergence. Interestingly, this part of our results contrasts with the current paradigm in plant-microbe interactions which considers the ACC deaminase enzyme as a plant growth promoting trait under stress conditions. This part shows that ACC deaminase producing enzyme has predominantly negative effects on plant fitness under stress condition. We further show that ethylene reduction by microbiota depends greatly on bacterial genetic background, which means that ACC deaminase enzymes with different bacterial genetic background significantly alter the outcome of plant-microbe interaction effects.We finally conclude that ethylene signalling cannot be fully understood without considering the whole microbiome as a set of integral regulatory actors; the final ethylene-mediated plant response is a result of plant and associated microbiota, which collectively forms a holobiont. This association may have large evolutionary implications, in which plants are dependent on their microbiome for adaptive ethylene-mediated responses.
- Published
- 2018
14. Reliability and Validity of the Iranian Version of Nijmegen Questionnaire in Iranians with Asthma
- Author
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Ravanbakhsh M, Nargesi M, Hanieh Raji, and Haddadzadeh Shoushtari M
- Subjects
Questionnaires ,Hyperventilation syndrome ,Capnography ,Original Article ,Reliability ,Asthma ,Validity - Abstract
Background: The aim of this study was to assess the validity and reliability of Nijmegen questionnaire (NQ) translated to Farsi for diagnosis of the hyperventilation syndrome (HVS) in patients with asthma. Materials and Methods: The original version of NQ was translated to Farsi and then back-translated to English again to assess its agreement with the original version. To determine its cultural adaptation, a pilot study was carried out. The mean score of the questionnaire and the mean pressure of end tidal carbon dioxide (PETCO2) were compared in 100 asthmatic patients to determine the validity of the questionnaire. For reliability, 52 out of 100 patients randomly filled out the questionnaire with an interval of 5 to 10 days. Internal consistency and content validity of the questionnaire were assessed by Cronbach’s alpha coefficient and by calculating floor and ceiling effects respectively. The exploratory factor analysis was used to assess the factor structure. Results: There was a significant inverse correlation between NQ scores and PETCO2 (P=−0.783). Cronbach’s alpha coefficient was greater than 0.7, indicating good internal consistency of the questionnaire (P=0.702). The questionnaire had a good stability in an interval of 5 to 10 days (P=0.826). The NQ had no floor and ceiling effect. and also factor analysis of 16 scales showed that this questionnaire has a five-factor structure, which can describe 55% of data variance. Conclusion: The Iranian version of the Nijmegen questionnaire is a valid and reliable tool for detection of patients with HVS. In addition, the questionnaire can be used to evaluate the condition of respiratory function in people with asthma.
- Published
- 2015
15. Microbial modulation of plant ethylene signaling: ecological and evolutionary consequences
- Author
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Sub Ecology and Biodiversity, Sub Plant Ecophysiology, Ecology and Biodiversity, Plant Ecophysiology, Ravanbakhsh, M., Sasidharan, R., Voesenek, L.A.C.J., Kowalchuk, G.A., Jousset, A.L.C., Sub Ecology and Biodiversity, Sub Plant Ecophysiology, Ecology and Biodiversity, Plant Ecophysiology, Ravanbakhsh, M., Sasidharan, R., Voesenek, L.A.C.J., Kowalchuk, G.A., and Jousset, A.L.C.
- Published
- 2018
16. Manipulation of plant ethylene balance by soil microbiota: a holobiont perspective to stress tolerance
- Author
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Sub Ecology and Biodiversity, Kowalchuk, George, Jousset, Alexandre, Sasidharan, Rashmi, Ravanbakhsh, M., Sub Ecology and Biodiversity, Kowalchuk, George, Jousset, Alexandre, Sasidharan, Rashmi, and Ravanbakhsh, M.
- Published
- 2018
17. Synthesis and characterization of a nanoadsorbent for removal of Bisphenol A by hydrous magnesium oxide: kinetic and isotherm studies
- Author
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Bahrami, P., primary, Kazeminezhad, I., additional, Noorimotlagh, Z., additional, Martinez, S.S., additional, Ahmadi, M., additional, Saraji, M., additional, Ravanbakhsh, M., additional, and Jaafarzadeh, N., additional
- Published
- 2018
- Full Text
- View/download PDF
18. Towards automating underwater measurement of fish length: A comparison of semi-automatic and manual stereo-video measurements
- Author
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Shafait, F., Harvey, Euan, Shortis, M., Mian, A., Ravanbakhsh, M., Seager, J., Culverhouse, P., Cline, D., Edgington, D., Shafait, F., Harvey, Euan, Shortis, M., Mian, A., Ravanbakhsh, M., Seager, J., Culverhouse, P., Cline, D., and Edgington, D.
- Abstract
Underwater stereo–video systems are widely used for counting and measuring fish in aquaculture, fisheries, and conservation management. Length measurements are generated from stereo–video recordings by a software operator using a mouse to locate the head and tail of a fish in synchronized pairs of images. This data can be used to compare spatial and temporal changes in the mean length and biomass or frequency distributions of populations of fishes. Since the early 1990s stereo–video has also been used for measuring the lengths of fish in aquaculture for quota and farm management. However, the costs of the equipment, software, the time, and salary costs involved in post processing imagery manually and the subsequent delays in the availability of length information inhibit the adoption of this technology. We present a semi-automatic method for capturing stereo–video measurements to estimate the lengths of fish. We compare the time taken to make measurements of the same fish measured manually from stereo–video imagery to that measured semi-automatically. Using imagery recorded during transfers of Southern Bluefin Tuna (SBT) from tow cages to grow out cages, we demonstrate that the semi-automatic algorithm developed can obtain fork length measurements with an error of less than 1% of the true length and with at least a sixfold reduction in operator time in comparison to manual measurements. Of the 22 138 SBT recorded we were able to measure 52.6% (11 647) manually and 11.8% (2614) semi-automatically. For seven of the eight cage transfers recorde,d there were no statistical differences in the mean length, weight, or length frequency between manual and semi-automatic measurements. When the data were pooled across the eight cage transfers, there was no statistical difference in mean length or weight between the stereo–video-based manual and semi-automated measurements. Hence, the presented semi-automatic system can be deployed to significantly reduce the cost involved in a
- Published
- 2017
19. A Study on Floristic Composition, Chorology and Ecological Structure: A case Study from a Small-scale Forest Reserve, Talesh, Iran
- Author
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RAVANBAKHSH, M and AMİNİ, T
- Subjects
Fen ,Science ,Floristic composition,Chorology,Ecological structure - Abstract
This study, carried out on vegetation of the Gisoum forest reserve with 171 hectares area located 14 km to Resvanshar city, Guilan province, was to examine the structure and composition of the forest vegetation. A first topographic map of the area with the scale of 1:10000 was prepared and the study area was delimited. Transect- quadrate method of sampling was used to record the floristic and phytosociological data necessary for the analysis in about 44 quadrates of 400 m2. Some vegetation parameters viz. density and diameter at breast height (DBH) for trees (over story vegetation) as well as cover-abundance for under story vegetation were recorded, respectively. The life form spectrum of Raunkiaer, the dominant vegetation type of the area, is based on importance value and vegetation structure based on frequency classes, also their chorology caring a central importance in vegetation description were determined. The study of the floristic list showed that 76 species belonging to 66 genera and 45 families existed in the area.The largest families were Asteraceae and Rosaceae with 5 species. Investigation of the geographical distribution of plant species indicated that 44 % belonged to the Europe – Siberian zone. Plant life forms by Raunkiaer method showed that phanerophytes with 35.5 % and hemicryptophytes with 27.6 % were the most frequent life forms. Dominant vegetation type based on importance value index was Buxus hyrcanus-Parrotia persica. Also the evaluation of vegetation structure based on frequency class revealed that abundance-distribution was irregular in under story and regular in upper story vegetation.
- Published
- 2014
20. Automated Fish Detection in Underwater Images Using Shape-Based level Sets
- Author
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Ravanbakhsh, M., Shortis, M., Shafait, F., Mian, A., Harvey, Euan, Seager, J., Ravanbakhsh, M., Shortis, M., Shafait, F., Mian, A., Harvey, Euan, and Seager, J.
- Abstract
Underwater stereo-video systems are widely used for the measurement of fish. However, the effectiveness of stereo-video measurement has been limited because most operational systems still rely on a human operator. In this paper an automated approach for fish detection, using a shape-based level-sets framework, is presented. Knowledge of the shape of fish is modelled by principal component analysis (PCA). The Haar classifier is used for precise localisation of the fish head and snout in the image, which is vital information for close-proximity initialisation of the shape model. The approach has been tested on underwater images representing a variety of challenging situations typical of the underwater environment, such as background interference and poor contrast boundaries. The results obtained demonstrate that the approach is capable of overcoming these difficulties and capturing the fish outline to sub-pixel accuracy.
- Published
- 2015
21. An Application of Shape-Based Level Sets to Fish Detection in Underwater Images
- Author
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Colin Arrowsmith, Chris Bellman, William Cartwright, Mark Shortis, Ravanbakhsh, M., Shortis, M., Shaifat, F., Mian, A., Harvey, Euan, Seager, J., Colin Arrowsmith, Chris Bellman, William Cartwright, Mark Shortis, Ravanbakhsh, M., Shortis, M., Shaifat, F., Mian, A., Harvey, Euan, and Seager, J.
- Abstract
Underwater stereo-video technology systems are used widely for measurement of fish. However the effectiveness of the stereo-video measurement has been limited because most operational systems still rely on a human operator. In this paper, an automated approach for fish detection using a shape-based level sets framework is presented. Shape knowledge of fish is modelled by Principal Component Analysis (PCA). The Haar classifier is used for precise position of the fish head and snout in the image, which is vital information for close proximity initialisation of the shape model. The approach has been tested on under-water images representing a variety of challenging situations typical of the underwater environment, such as background interference and poor contrast boundaries. The results obtained demonstrate that the approach is capable ofovercoming these limitations and capturing the fish outline at sub-pixel accuracy.
- Published
- 2014
22. A comparative study of DEM registration approaches
- Author
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Ravanbakhsh, M., primary and Fraser, C. S., additional
- Published
- 2013
- Full Text
- View/download PDF
23. GENERATION OF THE AUSTRALIAN GEOGRAPHIC REFERENCE IMAGE THROUGH LONG-STRIP ALOS PRISM ORIENTATION
- Author
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Ravanbakhsh, M., primary, Wang, L.-W., additional, Fraser, C. S., additional, and Lewis, A., additional
- Published
- 2012
- Full Text
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24. DEM REGISTRATION BASED ON MUTUAL INFORMATION
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Ravanbakhsh, M., primary and Fraser, C. S., additional
- Published
- 2012
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25. Precise Georefrencing of Long Strips of ALOS Imagery
- Author
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Fraser, C. S., primary and Ravanbakhsh, M., additional
- Published
- 2011
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26. Home-based versus center-based care in children with cerebral palsy: a cost-effectiveness analysis.
- Author
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Sharif Azar, E., Ravanbakhsh, M., Torabipour, A., Amiri, E., and Haghighyzade, M. H.
- Subjects
- *
CHILDREN'S health , *HOME-based family services , *HOME-based mental health services for children , *REHABILITATION , *QUALITY of life - Abstract
The rehabilitation services for children with cerebral palsy are provided in two forms: home-based care and center-based care. The aim of this research was to evaluate the cost-effectiveness of the home-based accordance with the center-based care for kids with cerebral palsy. In this cost-effectiveness research, 56 children under 12 years old were assigned randomly to two rehabilitation programs: (1) clinicbased rehabilitation services (CBRS); and (2) home-based rehabilitation services (HBRS). Data were collected by two questionnaires: a strong life quality survey of children with cerebral palsy (CP QOL-Child) and medical and non-medical costs' checklists. Finally, the incremental expense-efficacy rate (ICER) was used to determine the further expenses of one unit of the quality of life gained by CBRS compared with HBRS. The mean costs per patients for the home-based care group were less than the ones for the clinic-based care unit (US$ 660.3 vs. US$ 933.8). The costs of the rehabilitation services and transportation were the main costs in the two patients' groups. The quality of life for cases in the home-based care group was better than the one of the clinic-based care team. The results showed that the home-based care method was more cost-effective than the centre-based care approach in children with cerebral palsy. The incremental cost-effectiveness ratio was calculated at about US$ 2.6. The conclusion was that home-based care centers were more cost-effective than the centre-based care centers for children with cerebral palsy. Therefore, it was suggested that the health policy makers pay more attention to developing home-based care strategy in physically challenged children. [ABSTRACT FROM AUTHOR]
- Published
- 2015
27. Assessment of the speech disfluencies severity in preschool children with stuttering using sentence modeling and sentence imitation tasks.
- Author
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Zamani P., Ravanbakhsh M., and Naderi S.
- Subjects
- *
PSYCHOLOGY of preschool children , *STUTTERING in children , *IMITATIVE behavior in children , *PSYCHOLINGUISTICS ,DIAGNOSIS of speech disorders in children - Abstract
Background and aims: Linguistic factors can decrease or increase the children's speech disfluencies. One of these factors is the type of linguistic tasks presented to the child. The aim of this study was to investigate the effect of two tasks of sentence imitation and sentence modeling on severity of speech disfluencies in preschool children with stuttering. Methods: This cross-sectional descriptive-analytic study performed on 58 children with stuttering (29 subjects with mild stuttering and 29 subjects with moderate stuttering) and on 58 children with fluent speech aged 4-6 years old. The severity of speech disfluencies was measured by two separate tasks (sentence imitation and sentence modeling), and the results of two tasks were compared. Results: The mean stuttering severity score in boys with moderate stuttering in two tasks of sentence imitation and sentence modeling was 23.79±1.26 & 29.00±1.87 respectively and significant difference was observed (P=0.004). The mean stuttering severity score in girls with moderate stuttering was 25.27±1.93 & 33.18±2.32 respectively and significant difference was observed (P=0.007). The score of speech disfluencies in both sexes of non-stutter children and mild stuttering had no significant difference between two tasks (P>0.05). Conclusion: In preschool children with mild stuttering and peer non-stutters, performing two tasks of sentence imitation and sentence modeling could not increase the severity of stuttering. In preschool children with moderate stuttering, doing the task of sentence modeling increased the stuttering severity score. It is suggested that speech therapists apply the findings of this study to develop linguistic tasks with various levels of difficulty for children with stuttering. [ABSTRACT FROM AUTHOR]
- Published
- 2015
28. Study of safety climate in rehabilitation clinics in Ahwaz city.
- Author
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Moghani Bashi Mansourieh, Е., Faraji Khiavi, F., Ravanbakhsh, M., and HaghighiZade, M. H.
- Published
- 2015
29. A Heuristic Routing Mechanism Using a New Addressing Scheme
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Ravanbakhsh, M., primary, Abbasi-Yadkori, Y., additional, Abbaspour, M., additional, and Sarbazi-Azad, H., additional
- Published
- 2006
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30. Power savings of cyclic network coding for multicast on wireless networks.
- Author
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Ravanbakhsh, M., Barbero, A.I., Haugland, D., and Ytrehus, O.
- Published
- 2010
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31. Methods for Flow Graph Selection in Integral Network Coding.
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Ravanbakhsh, M. and Haugland, D.
- Published
- 2010
- Full Text
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32. Automatic Building Detection Using LIDAR Data and Multispectral Imagery.
- Author
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Awrangjeb, M., Ravanbakhsh, M., and Fraser, C.S.
- Published
- 2010
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33. Improved delay estimates for a queueing model for random linear coding for unicast.
- Author
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Ravanbakhsh, M., Barbero, A.I., and Ytrehus, O.
- Published
- 2009
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34. A Fast Corner Detector Based on the Chord-to-Point Distance Accumulation Technique.
- Author
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Awrangjeb, M., Guojun Lu, Fraser, C.S., and Ravanbakhsh, M.
- Published
- 2009
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35. Two Layer Secure Network Coding - (2-LSNC).
- Author
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Hassanzadeh, M.M., Ravanbakhsh, M., and Ytrehus, O.
- Published
- 2008
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36. Knowledge-based road junction extraction from high-resolution aerial images.
- Author
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Ravanbakhsh, M., Heipke, C., and Pakzad, K.
- Published
- 2007
- Full Text
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37. Comparison between Some Important Breathing Pattern Index in Non Specific Chronic Low Back Pain and Healthy Subjects.
- Author
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Ravanbakhsh, M., Pazhuhide, S. F., and Goharpey, Sh.
- Abstract
Background and Aim: Some of the patients with chronic low back pain commonly do not experience full recovery with the conventional physical therapy. It is revealed that may be there are some items in subjects with low back, which are not studied well till now. Since there are some evidences about breathing pattern disorder in low back pain patients, the purpose of this study was to compare between some important breathing pattern index in non-specific chronic low back pain and healthy subjects. Materials and Methods: In this descriptive analysis study, there were 16 patients with chronic non-specific low back pain and 16 healthy subjects. Both groups were matched and selected by some of the demographic characteristics. Respiratory data including respiratory rate, volumetric, time depended and chemical index were calculated by K4b2 instrument. Results: They have significant differences in some of the respiratory parameters including respiratory rate, inspiration and expiration times and total time of respiration between two groups, whereas inspiration total time ratio, volumetric and chemical index do not have significant differences. Conclusion: Existence of disorders in some parameters of respiratory patterns in patients with low back pain are revealed that survey of respiratory system in patients with chronic non-specific low back pain can be effective in diagnosis and treatment process in physiotherapy centers. [ABSTRACT FROM AUTHOR]
- Published
- 2014
38. CD40 ligand expression on stimulated T-helper lymphocytes in patients with common variable immunodeficiency
- Author
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Ravanbakhsh, M., Sarafnejad, A., Aghamohammadi, A., Kardar, G. A., Omran, H. A., Atarod, L., Nima Rezaei, Shahrestani, T., Hosseini, M., and Moin, M.
- Subjects
Adult ,Male ,Common Variable Immunodeficiency (CVID) ,CD40 Ligand (CD154) ,Adolescent ,CD40 Ligand ,lcsh:R ,Antibodies, Monoclonal ,lcsh:Medicine ,T-Lymphocytes, Helper-Inducer ,Middle Aged ,Lymphocyte Activation ,Common Variable Immunodeficiency ,Humans ,Female ,Child ,Cells, Cultured - Abstract
Common variable immunodeficiency (CVID) is the most common symptomatic primary antibody deficiency, characterized by reduced serum immunoglobulins levels and increased susceptibility to recurrent pyogenic infections. In this study, we evaluated CD40 ligand expression on stimulated versus unstimulated T-helper lymphocytes of nine Common variable immunodeficient patients in comparison with fifteen normal controls. Phorbol myristate acetate (PMA) and Ionomycin were used to stimulate cells in vitro. After six hours stimulation, the cells were subjected to surface staining with three-color staining procedure. Events were analyzed by flow cytometer, using FloMax software. Results were reported as the percentage of lymphocytes expressing CD markers. We did not find any significant statistical difference in CD40 ligand expression between patients and controls (p>0.05), despite having stimulation documented by CD69 expression as activation marker in each run. The results of this study are in agreement with some other studies, indicating that CD40 ligand expression on stimulated T-helper lymphocytes of Common variable immunodeficiency patients is similar to normal controls.
39. An application of shape-based level sets to fish detection in underwater images
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Ravanbakhsh, M., Mark Shortis, Shaifat, F., Mian, A., Harvey, E. S., and Seager, J. W.
40. A heuristic routing mechanism using a new addressing scheme.
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Ravanbakhsh, M., Abbasi-Yadkori, Y., Abbaspour, M., and Sarbazi-Azad, H.
- Published
- 2006
- Full Text
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41. Deletion of ACC Deaminase in Symbionts Converts the Host Plant From Water Waster to Water Saver.
- Author
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Hecht K, Kowalchuk GA, Ford Denison R, Kahmen A, Xiong W, Jousset A, and Ravanbakhsh M
- Abstract
Increasing drought events coupled with dwindling water reserves threaten global food production and security. This issue is exacerbated by the use of crops that overconsume water, undermining yield. We show here that microorganisms naturally associated with plant roots can undermine efficient water use, whereas modified bacteria can enhance it. We demonstrate that microbe-encoded genes shape drought tolerance, likely by modulating plant hormonal balance. Specifically, we built a minimal holobiont out of Arabidopsis thaliana and either the bacterium Pseudomonas putida UW4 or its isogenic AcdS
- mutant, lacking the enzyme ACC deaminase. This enzyme breaks down the precursor of ethylene, a key regulator in plant response to drought. This single mutation profoundly affected plant physiology and shifted the plant from a 'water-spender' (with more growth under well-watered conditions) to a 'water-spender' phenotype. Under drought, plants associated with wild-type bacteria consumed soil water faster, leading to a shorter period of growth followed by death. In contrast, plants associated with the AcdS- mutant managed to maintain growth by reducing water consumption via stomatal closure, thus conserving soil water. This allowed plants to survive severe water deficiency. We conclude that plant-associated bacteria can modulate plant water use strategies, opening possibilities to engineer water-savvy crop-production systems., (© 2024 The Author(s). Plant, Cell & Environment published by John Wiley & Sons Ltd.)- Published
- 2024
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42. EFFECT OF VISCERAL MANIPULATION ON CHILDREN WITH REFRACTORY CHRONIC FUNCTIONAL CONSTIPATION: A RANDOMIZED CONTROLLED TRIAL.
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Zakaryaei SA, Ravanbakhsh M, Javaherizadeh H, Hakimzadeh M, and Shaterzadeh-Yazdi MJ
- Subjects
- Humans, Male, Female, Child, Single-Blind Method, Chronic Disease, Treatment Outcome, Laxatives administration & dosage, Laxatives therapeutic use, Defecation physiology, Adolescent, Pain Measurement, Constipation therapy, Constipation physiopathology
- Abstract
Background: Functional constipation (FC) is a common global high prevalence issue in children., Objective: The purpose of the present study is to evaluate the effect of visceral manipulation (VM) on children with chronic interacble FC unresponsive to the standard treatment., Methods: This study was conducted as a randomized, single-blind controlled trial. Fifty-two children with refractory chronic functional constipation unresponsive to the standard medical treatment were randomly allocated to two groups of 26 control (standard medical care (SMC)) and 26 intervention (SMC with VM) for 4 weeks. Abdominal pain, painful defecation, stool consistency, defecation frequency, and the dose of oral laxative were evaluated before and after the treatment period using the Pain Rating Scale, Bristol stool form scale, and patient/parents report., Results: At the end of treatment, except for the dose of oral laxative in the control group, all of the results showed a significant difference in both groups (P<0.05). The dose of oral laxative in the intervention group decreased significantly (P<0.05), however, no significant change was observed in the control group (P>0.05). In the intervention group comparison, statistically significant differences were found in all va-riables except the Bristol stool form scale (P<0.05). The Bristol stool form scale after treatments was not different when the groups were compared (P=0.32), but the number of subjects who had normal stool consistency was significantly increased in the intervention group than in the control group (P<0.05)., Conclusion: VM can be considered as a possible treatment without side effects besides SMC for the management of chronic FC. Further studies are needed to investigate the long-term effect of VM.
- Published
- 2024
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43. Divergent impacts of fertilization regimes on below-ground prokaryotic and eukaryotic communities in the Tibetan Plateau.
- Author
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Sun S, Liu C, Zhang Y, Yue Y, Sun S, Bai Y, Zhang P, Ravanbakhsh M, Dini-Andreote F, Li R, Zhang Z, Jousset A, Shen Q, A Kowalchuk G, and Xiong W
- Subjects
- Tibet, Ecosystem, Phosphorus analysis, Soil Microbiology, Biomass, Nitrogen, Agriculture, Soil chemistry, Fertilizers, Biodiversity
- Abstract
Chemical nutrient amendment by human activities can lead to environmental impacts contributing to global biodiversity loss. However, the comprehensive understanding of how below- and above-ground biodiversity shifts under fertilization regimes in natural ecosystems remains elusive. Here, we conducted a seven-year field experiment (2011-2017) and examined the effects of different fertilization on plant biodiversity and soil belowground (prokaryotic and eukaryotic) communities in the alpine meadow of the Tibetan Plateau, based on data collected in 2017. Our results indicate that nitrogen addition promoted total plant biomass but reduced the plant species richness. Conversely, phosphorus enrichment did not promote plant biomass and exhibited an unimodal pattern with plant richness. In the belowground realm, distinct responses of soil prokaryotic and eukaryotic communities were observed under fertilizer application. Specifically, soil prokaryotic diversity decreased with nitrogen enrichment, correlating with shifts in soil pH. Similarly, soil eukaryotic diversity decreased with increased phosphorous inputs, aligning with the equilibrium between soil available and total phosphorus. We also established connections between these soil organism communities with above-ground plant richness and biomass. Overall, our study contributes to a better understanding of the sustainable impacts of human-induced nutrient enrichment on the natural environment. Future research should delve deeper into the long-term effects of fertilization on soil health and ecosystem functioning, aiming to achieve a balance between agricultural productivity and environmental conservation., Competing Interests: Declaration of competing interest The authors declare no conflicts of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
44. Multi-Label Noise Robust Collaborative Learning for Remote Sensing Image Classification.
- Author
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Aksoy AK, Ravanbakhsh M, and Demir B
- Abstract
The development of accurate methods for multi-label classification (MLC) of remote sensing (RS) images is one of the most important research topics in RS. The MLC methods based on convolutional neural networks (CNNs) have shown strong performance gains in RS. However, they usually require a high number of reliable training images annotated with multiple land-cover class labels. Collecting such data is time-consuming and costly. To address this problem, the publicly available thematic products, which can include noisy labels, can be used to annotate RS images with zero-labeling cost. However, multi-label noise (which can be associated with wrong and missing label annotations) can distort the learning process of the MLC methods. To address this problem, we propose a novel multi-label noise robust collaborative learning (RCML) method to alleviate the negative effects of multi-label noise during the training phase of a CNN model. RCML identifies, ranks, and excludes noisy multi-labels in RS images based on three main modules: 1) the discrepancy module; 2) the group lasso module; and 3) the swap module. The discrepancy module ensures that the two networks learn diverse features, while producing the same predictions. The task of the group lasso module is to detect the potentially noisy labels assigned to multi-labeled training images, while the swap module is devoted to exchange the ranking information between two networks. Unlike the existing methods that make assumptions about noise distribution, our proposed RCML does not make any prior assumption about the type of noise in the training set. The experiments conducted on two multi-label RS image archives confirm the robustness of the proposed RCML under extreme multi-label noise rates. Our code is publicly available at: https://www.noisy-labels-in-rs.org.
- Published
- 2024
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45. Post-COVID-19 physical and cognitive impairments and associations with quality of life: a cross-sectional study.
- Author
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Rahimi F, Saadat M, Hessam M, Ravanbakhsh M, and Monjezi S
- Abstract
Background and Objective: This study aimed to compare physical and cognitive functions between post-coronavirus disease 2019 (COVID-19) participants and healthy matched controls and investigate associations between physical and cognitive impairments with quality of life., Methods: Twenty-three post-COVID-19 participants and 23 age and sex-matched healthy people without a history of COVID-19 were included. Physical function was assessed using the Medical Research Council Sum Score (MRC-SS), 2 min Step Test, Modified Borg Scale, and Short Physical Performance Battery (SPPB) Test. Cognitive function was assessed using the Montreal Cognitive Assessment (MoCA), Trail Making Test (TMT), and Stroop test, and the quality of life was evaluated using the Euro Quality of Life-5 Dimensions-3 Levels (EQ-5D-3l) questionnaire. Assessments were performed by a physical therapist in one session., Results: Mann-Whitney U test showed that in the post-COVID-19 group, compared to the control group, the number of steps in the 2 min Step Test ( p < 0.001, ES = 0.57) and the scores of the SPPB ( p = 0.03, ES = 0.32), MoCA ( p = 0.003, ES = 0.44), Stroop test ( p < 0.001, ES = 0.75), and the EQ-5D-3l visual analog scale ( p = 0.027, ES = 0.32) were significantly lower. In addition, the Modified Borg Scale score ( p < 0.001, ES = 0.6), TMT-A ( p = 0.013, ES = 0.36) and TMT-B ( p = 0.016, ES = 0.35) times, and the Stroop time ( p < 0.001, ES = 0.61) were significantly higher in the post-COVID-19 group. There were no significant between-group differences in the MRC-SS score ( p = 0.055, ES = 0.28). Furthermore, there were significant moderate to high associations between physical and cognitive functions and the quality of life in post-COVID-19 participants., Conclusions: On average 4 months after symptomatic COVID-19, post-COVID-19 participants had significant impairments in physical and cognitive functions compared to healthy matched controls that were significantly correlated with the quality of life. These findings highlight the need for a comprehensive assessment to plan appropriate management strategies., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (© 2024 Rahimi, Saadat, Hessam, Ravanbakhsh, Monjezi.)
- Published
- 2024
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46. Protist predation promotes antimicrobial resistance spread through antagonistic microbiome interactions.
- Author
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Liu C, Wang Y, Zhou Z, Wang S, Wei Z, Ravanbakhsh M, Shen Q, Xiong W, Kowalchuk GA, and Jousset A
- Subjects
- Metagenomics, Anti-Bacterial Agents pharmacology, Drug Resistance, Microbial, Microbial Interactions, Drug Resistance, Bacterial, Eukaryota drug effects, Microbiota drug effects, Soil Microbiology, Bacteria drug effects, Bacteria genetics, Bacteria classification
- Abstract
Antibiotic resistance has grown into a major public health threat. In this study, we reveal predation by protists as an overlooked driver of antibiotic resistance dissemination in the soil microbiome. While previous studies have primarily focused on the distribution of antibiotic resistance genes, our work sheds light on the pivotal role of soil protists in shaping antibiotic resistance dynamics. Using a combination of metagenomics and controlled experiments in this study, we demonstrate that protists cause an increase in antibiotic resistance. We mechanistically link this increase to a fostering of antimicrobial activity in the microbiome. Protist predation gives a competitive edge to bacteria capable of producing antagonistic secondary metabolites, which secondary metabolites promote in turn antibiotic-resistant bacteria. This study provides insights into the complex interplay between protists and soil microbiomes in regulating antibiotic resistance dynamics. This study highlights the importance of top-down control on the spread of antibiotic resistance and directly connects it to cross-kingdom interactions within the microbiome. Managing protist communities may become an important tool to control outbreaks of antibiotic resistance in the environment., (© The Author(s) 2024. Published by Oxford University Press on behalf of the International Society for Microbial Ecology.)
- Published
- 2024
- Full Text
- View/download PDF
47. Microplastics in the atmosphere of Ahvaz City, Iran.
- Author
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Abbasi S, Jaafarzadeh N, Zahedi A, Ravanbakhsh M, Abbaszadeh S, and Turner A
- Subjects
- Atmosphere, Weather, Iran, Microplastics, Plastics
- Abstract
Airborne particulate matter (PM) with an aerodynamic size cutoff of 10 µm (PM10) has been collected using a high volume air sampler at two locations (urban and residential) in the city of Ahvaz, Iran, for sixteen 24-hour periods over four months (late summer to early winter). Microplastics (MPs) in the PM were isolated after sample digestion and were subsequently characterised by established techniques. All MPs sampled (n = 322) were of a fibrous nature, with polyethylene terephthalate, nylon and polypropylene being the dominant polymers and consistent with textiles and fabrics as the principal source. Despite a distinct seasonality (temperature and wind) over the study period, the abundance, size and colour of the fibres exhibited no clear temporal trend, and no clear differences were observed between the two sites. Concentrations of MPs ranged from none detected to about 0.017/m
3 (median = 0.0065/m3 ) and are at the low end of ranges reported in the recent literature for various urban and remote locations. While some MPs may have a local origin, the weathering of other MPs and their acquisition of extraneous geosolids and salts suggests that long-range transport is also important. Back-trajectory calculations indicate that regional sources are mainly to the north and west of Ahvaz, but a southerly, maritime source is also possible in late autumn. Although concentrations of MPs in the atmosphere are well below those encountered in indoor air, further studies are required to elucidate their potential ecological impacts., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022. Published by Elsevier B.V.)- Published
- 2023
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48. Assessment of Polycyclic Aromatic Hydrocarbons (PAHs) in Seawater and Sediments, Human and Ecological Risks, Northern Coastline of Persian Gulf.
- Author
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Ravanbakhsh M, Jaafarzadeh Haghighi Fard N, Ramezani Z, Ahmadi M, and Jorfi S
- Subjects
- Humans, Geologic Sediments, Indian Ocean, Environmental Monitoring, Seawater, Polycyclic Aromatic Hydrocarbons analysis, Water Pollutants, Chemical analysis
- Abstract
This study aimed to assess 13 PAHs concentrations and induced human and ecological risks in seawater and surficial sediments of eight estuaries in the northern coastline of the Persian Gulf, Iran, 2021. The range of Σ13 PAHs concentration was 0.24-8.83 µg L
-l and 3.1-11.46 µg g-1 dry weight, and the mean value was 4.99 µg L-l and 6.06 µg g-1 dry weight in seawater and sediment, respectively. Two, three and four rings PAHs were dominant with 29.33% and 41.33% of ΣPAHs in seawater and sediment, respectively. The primary source of PAHs was both pyrolytic and petrogenic. Most PAHs' calculated health (DCR, HQs, TEF, MEF) and ecological risks (SQGs) values in seawater were in the moderate range or high-risk values for damage to the marine environment. It is concluded that the pollution of PAHs should be carefully considered, and the government should make a proper action plan to minimize the pollution., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)- Published
- 2023
- Full Text
- View/download PDF
49. The synergic effects of alpha-lipoic acid supplementation and electrical isotonic contraction on anthropometric measurements and the serum levels of VEGF, NO, sirtuin-1, and PGC1-α in obese people undergoing a weight loss diet.
- Author
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Mohammadshahi M, Zakizadeh E, Ahmadi-Angali K, Ravanbakhsh M, and Helli B
- Subjects
- Adult, Body Composition, Body Mass Index, Dietary Supplements, Humans, Iran, Isotonic Contraction, Nitric Oxide, Obesity therapy, Sirtuin 1, Vascular Endothelial Growth Factor A, Weight Loss, Diet, Reducing, Thioctic Acid therapeutic use
- Abstract
Background: The anti-obesity effects of Alpha-lipoic acid (α-LA) and isotonic contraction has been reported. However, the underlying mechanism is not fully understood. This study aimed to investigate the effect of 1200 mg/day α-LA supplementation and 3 sessions per week of Faradic (an electrical stimulating system) on anthropometric parameters, body composition, VEGF, Sirtuin-1, nitric oxide (NO), and PGC1-α in obese people undergoing a weight loss regime. Methods: This randomised clinical trial was carried out on 100 obese adults. The subjects were randomly assigned to four groups of 25 subjects including Faradic, α-LA, α-LA + Faradic, and control. A Bio Impedance Analyser (BIA) was used to estimate anthropometric measurements including weight, body mass index (BMI), fat mass, and fat free mass. The serum levels of Sirtuin-1, PGC1-α, VEGF, and NO levels were measured. All measurements were done at baseline and after 8 weeks of the intervention. Results: A significant weight reduction was observed in all four groups compared to baseline ( p <.01). The placebo group had significantly higher weight, BMI, weight circumstance (WC), and body fat (BF) compared with the other groups. The α-LA + Faradic group had significantly lower weight, BMI, BF, WC than control, faradic, and α-LA groups and higher, Sirtuin and PGC than the control group (all p < .05). Conclusions: The findings indicated that the α-LA and Faradic interventions may have a synergistic effect on weight, BMI, BF, WC, and SLM, possibly through changes in serum level of VEGF, NO, and PGC. Further studies are warranted to clarify the mutual effects of -α-LA and Faradic on obesity and its molecular mechanisms. Name of the registry: Iranian Registry of Clinical Trials Trial registration number: IRCT20131117015424N2 Date of registration: 04/04/2018 URL of trial registry record: https://www.irct.ir/search/result?query=IRCT20131117015424N2.
- Published
- 2022
- Full Text
- View/download PDF
50. Going Viral: Virus-Based Biological Control Agents for Plant Protection.
- Author
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Wagemans J, Holtappels D, Vainio E, Rabiey M, Marzachì C, Herrero S, Ravanbakhsh M, Tebbe CC, Ogliastro M, Ayllón MA, and Turina M
- Subjects
- Animals, Bacteria, Ecosystem, Fungi, Insecta, Plant Diseases, Plants, Biological Control Agents, Viruses
- Abstract
The most economically important biotic stresses in crop production are caused by fungi, oomycetes, insects, viruses, and bacteria. Often chemical control is still the most commonly used method to manage them. However, the development of resistance in the different pathogens/pests, the putative damage on the natural ecosystem, the toxic residues in the field, and, thus, the contamination of the environment have stimulated the search for saferalternatives such as the use of biological control agents (BCAs). Among BCAs, viruses, a major driver for controlling host populations and evolution, are somewhat underused, mostly because of regulatory hurdles that make the cost of registration of such host-specific BCAs not affordable in comparison with the limited potential market. Here, we provide a comprehensive overview of the state of the art of virus-based BCAs against fungi, bacteria, viruses, and insects, with a specific focus on new approaches that rely on not only the direct biocidal virus component but also the complex ecological interactions between viruses and their hosts that do not necessarily result in direct damage to the host.
- Published
- 2022
- Full Text
- View/download PDF
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