Impact of silver nanoparticles on the biouptake, physiological responses and metabolic perturbations in freshwater alga Poterioochromonas malhamensis

2021 ◽  
Vol 350 ◽  
pp. S181
Author(s):  
W. Liu ◽  
S. Majumdar ◽  
W.W. Li ◽  
A.A. Keller ◽  
V.I. Slaveykova
Keyword(s):  
Silver Nanoparticles ◽  
Physiological Responses ◽  
Freshwater Alga ◽  
Poterioochromonas Malhamensis

The Toxicity of Nonaged and Aged Coated Silver Nanoparticles to Freshwater Alga Raphidocelis subcapitata

2019 ◽  
Vol 38 (11) ◽  
pp. 2371-2382
Author(s):  
Sam Lekamge ◽  
Ana F. Miranda ◽  
Charlene Trestrail ◽  
Ben Pham ◽  
Andrew S. Ball ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Freshwater Alga ◽  
Raphidocelis Subcapitata

Silver Nanoparticles and Their Morpho-Physiological Responses on Plants

2021 ◽  
pp. 183-216
Author(s):  
Roseline Xalxo ◽  
Bhumika Yadu ◽  
Vibhuti Chandrakar ◽  
Meetul Kumar ◽  
Jipsi Chandra ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Physiological Responses

scholarly journals Physiological Responses of Two Varieties of Common Bean (Phaseolus VulgarisL.) to Foliar Application of Silver Nanoparticles

10.5772/62202 ◽  
2016 ◽  
Vol 6 ◽  
pp. 13 ◽  
Author(s):  
Ahmed Ibrahim El-Batal ◽  
Fatma Abd El-Lateef Gharib ◽  
Safia Mohammed Ghazi ◽  
Amal Zakaria Hegazi ◽  
Asmaa Gamal Mohamed Abd El Hafz
Keyword(s):  
Silver Nanoparticles ◽  
Common Bean ◽  
Foliar Application ◽  
Physiological Responses

scholarly journals Metabolomics for early detection of stress in freshwater alga Poterioochromonas malhamensis exposed to silver nanoparticles

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Liu ◽  
Sanghamitra Majumdar ◽  
Weiwei Li ◽  
Arturo A. Keller ◽  
Vera I. Slaveykova
Keyword(s):  
Silver Nanoparticles ◽  
Early Detection ◽  
Tca Cycle ◽  
Environmental Implications ◽  
Major Toxicity ◽  
Food Vacuoles ◽  
Global Biogeochemical Cycles ◽  
Detection Of Stress ◽  
Poterioochromonas Malhamensis ◽  
And Oxidative Stress

AbstractSilver nanoparticles (AgNPs) are one of the most used engineered nanomaterials. Despite progress in assessing their environmental implications, knowledge gaps exist concerning the metabolic perturbations induced by AgNPs on phytoplankton, essential organisms in global biogeochemical cycles and food-web dynamics. We combine targeted metabolomics, biouptake and physiological response studies to elucidate metabolic perturbations in alga Poterioochromonas malhamensis induced by AgNPs and dissolved Ag. We show time-dependent perturbation of the metabolism of amino acids, nucleotides, fatty acids, tricarboxylic acids, photosynthesis and photorespiration by both Ag-treatments. The results suggest that dissolved Ag ions released by AgNPs are the major toxicity driver; however, AgNPs internalized in food vacuoles contributed to the perturbation of amino acid metabolism, TCA cycle and oxidative stress. The metabolic perturbations corroborate the observed physiological responses. We highlight the potential of metabolomics as a tool for understanding the molecular basis for these metabolic and physiological changes, and for early detection of stress.

Phytotoxicity of Silver Nanoparticles to Peanut (Arachis hypogaea L.): Physiological Responses and Food Safety

2017 ◽  
Vol 5 (8) ◽  
pp. 6557-6567 ◽  
Author(s):  
Mengmeng Rui ◽  
Chuanxin Ma ◽  
Xinlian Tang ◽  
Jie Yang ◽  
Fuping Jiang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Food Safety ◽  
Arachis Hypogaea ◽  
Physiological Responses ◽  
Arachis Hypogaea L

Misophonia: An Evidence-Based Case Report

2020 ◽  
Vol 29 (4) ◽  
pp. 685-690
Author(s):  
C. S. Vanaja ◽  
Miriam Soni Abigail
Keyword(s):  
Quality Of Life ◽  
Case Report ◽  
Case History ◽  
Pure Tone ◽  
Physiological Responses ◽  
Evidence Based ◽  
Management Option ◽  
Pure Tone Audiogram

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.

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