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https://www.readbyqxmd.com/read/28938452/dose-specific-effects-of-di-isononyl-phthalate-on-the-endocannabinoid-system-and-on-liver-of-female-zebrafish
#1
Isabel Forner-Piquer, Francesca Maradonna, Giorgia Gioacchini, Stefania Santangeli, Marco Allarà, Fabiana Piscitelli, Hamid R Habibi, Vincenzo Di Marzo, Oliana Carnevali
Phthalates, used as plasticizers, have become a ubiquitous contaminant and have been reported for their potential to induce toxicity in living organisms. Among them, the Di-isononyl phthalate (DiNP) has been recently used to replace the bis(2-ethylhexyl) phthalate (DEHP). Nowadays, there is evidence that DiNP is an Endocrine Disrupting Chemical (EDC), however little is known about its effects on the Endocannabinoid System (ECS) and lipid metabolism. Hence, the aim of our study was to investigate the effects of DiNP on the ECS in zebrafish liver and brain and on hepatic lipid storage...
August 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28937880/detection-of-free-microcystins-in-the-liver-and-muscle-of-freshwater-fish-by-liquid-chromatography-tandem-mass-spectrometry
#2
Xiaobin Hu, Jinyun Ye, Rongfei Zhang, Xiang Wu, Yixiang Zhang, Chenglong Wu
MC analysis of biological tissue is considered to be very difficult due to the lack of validated methods. This is the primary limiting factor for monitoring potential risks in both the flesh of aquatic organisms and the aquatic ecosystem. In this study, an effective method to determine free MCs (MC-LR and MC-RR) in the muscle and liver tissues of freshwater cultured fish was developed using solid-phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC/MS-MS). The extraction solvent, time of extraction, eluent and purification of the extract were optimized...
September 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28936635/competition-and-pesticide-exposure-affect-development-of-invasive-rhinella-marina-and-native-fejervarya-vittigera-rice-paddy-amphibian-larvae
#3
Molly E Shuman-Goodier, Grant R Singleton, Catherine R Propper
Increased pesticide use in rice agricultural ecosystems may alter competitive interactions between invasive and native amphibian species. We conducted an experiment with two rice paddy amphibians found in Luzon, Philippines, the invasive cane toad (Rhinella marina) and the endemic Luzon wart frog (Fejervarya vittigera), to determine whether exposure to a common herbicide, butachlor, drives competitive interactions in favor of the invasive amphibian. Our results revealed that competition had a strong effect on the development of both species, but in opposing directions; Luzon wart frog tadpoles were smaller and developed slower than when raised alone, whereas cane toad tadpoles were larger and developed faster...
September 21, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28936616/effects-of-long-term-anthropogenic-disturbance-on-the-benthic-episammic-diatom-community-of-an-ancient-tropical-lake
#4
Andrew J Bramburger, Paul B Hamilton, G Douglas Haffner
Habitat homogenization, nutrient enrichment and loss of biodiversity are broadly recognized as the consequences of human activity in aquatic systems. Diatoms (Bacillariophyceae) are frequently used in aquatic environmental assessment and impact monitoring, but in unique habitats dominated by endemic taxa, traditional approaches may not be appropriate. We examined the impacts of long term anthropogenic impacts upon the littoral episammic diatom community around the town of Soroako, located on Lake Matano, an ancient tropical lake...
September 21, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28935893/trap-diversity-and-character-evolution-in-carnivorous-bladderworts-utricularia-lentibulariaceae
#5
Anna Sofia Westermeier, Andreas Fleischmann, Kai Müller, Bastian Schäferhoff, Carmen Rubach, Thomas Speck, Simon Poppinga
Bladderworts (Utricularia, Lentibulariaceae, Lamiales) constitute the largest genus of carnivorous plants but only aquatic species (about one fifth of the genus) have so far been thoroughly studied as to their suction trap functioning. In this study, we comparatively investigated trap biomechanics in 19 Utricularia species to examine correlations between life-forms, trapping mechanisms, and functional-morphological traits. Our investigations show the existence of two functional trap principles (passive trap in U...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935128/quality-of-life-and-sleep-quality-are-similarly-improved-after-aquatic-or-dry-land-aerobic-training-in-patients-with-type-2-diabetes-a-randomized-clinical-trial
#6
Rodrigo S Delevatti, Felipe Barreto Schuch, Ana Carolina Kanitz, Cristine L Alberton, Elisa Corrêa Marson, Salime Chedid Lisboa, Carolina Dertzbocher Feil Pinho, Luciana Peruchena Bregagnol, Maríndia Teixeira Becker, Luiz Fernando M Kruel
OBJECTIVES: To compare the effects of two aerobic training models in water and on dry-land on quality of life, depressive symptoms and sleep quality in patients with type 2 diabetes. DESIGN: Randomized clinical trial. METHODS: Thirty-five patients with type 2 diabetes were randomly assigned to aquatic aerobic training group (n=17) or dry-land aerobic training group (n=18). Exercise training length was of 12 weeks, performed in three weekly sessions (45min/session), with intensity progressing from 85% to 100% of heart rate of anaerobic threshold during interventions...
September 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28934711/alterations-of-larval-photo-dependent-swimming-responses-pdr-new-endpoints-for-rapid-and-diagnostic-screening-of-aquatic-contamination
#7
Luis Colón-Cruz, Lauren Kristofco, Jonathan Crooke-Rosado, Agnes Acevedo, Aranza Torrado, Bryan W Brooks, María A Sosa, Martine Behra
Detection and toxicity assessment of waterborne contaminants are crucial for protecting human health and the environment. Development of easy-to-implement, rapid and cost-effective tools to measure anthropogenic effects on watersheds are critical for responsible management, particularly in times of increasing development and urbanization. Traditionally, environmental toxicology has focused on limited endpoints, such as lethality and fertility, which are directly affecting population levels. However, more sensitive readings are needed to assess sub-lethal effects...
September 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28934709/toxicity-of-ammonia-cadmium-and-nitrobenzene-to-four-local-fishes-in-the-liao-river-china-and-the-derivation-of-site-specific-water-quality-criteria
#8
Zhihong Liu, Xiaojun Li, Peidong Tai, Lizong Sun, Honghong Yuan, Xiaonan Yang
Water quality criteria (WQC) are considered to be an effective management tool for protecting aquatic environments. To derive site-specific WQC for an area, local data based on local species are essential to improve the applicability of WQC derived. Due to the paucity of local fish data available for the development of site-specific WQC for the Liao River, China, four local and widespread fishes (Pseudorasbora parva, Abbottina liaoningensis, Ctenogobius giurinus, and Misgurnus anguillicaudatus) were chosen to test their sensitivities to ammonia, cadmium and nitrobenzene...
September 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28934708/different-partition-of-polycyclic-aromatic-hydrocarbon-on-environmental-particulates-in-freshwater-microplastics-in-comparison-to-natural-sediment
#9
Wenfeng Wang, Jun Wang
Microplastics pollution in the aquatic ecosystems has aroused increasing concerns in recent years. Though microplastics are known to sorb organic contaminants from water, the interaction mechanisms between microplastics and organic chemicals are not yet well understood. Here we investigated the partition characteristics of phenanthrene (Phe) in three mass-produced plastic particles, including polyethylene (PE), polystyrene (PS) and polyvinylchloride (PVC), and one natural sediment, as a comparison. The sorption kinetics of Phe onto microplastics and natural sediment were successfully described by the pseudo-second-order model (R(2) > 0...
September 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28934690/butyl-benzyl-phthalate-bbp-induces-caudal-defects-during-embryonic-development
#10
Nicole M Roy, Ewelina Zambrzycka, Jenna Santangelo
Butyl benzyl phthalate (BBP) is commonly added during the manufacturing of plastics to increase flexibility and elasticity. However, BBP leaches off of plastic and environment presence has been detected in soil, groundwater and sediment potentially effecting organisms in the environment. Given the widespread uses of BBP in household, consumer goods and the presence of BBP in the environment, studies on developmental toxicity are needed. Here, we use a zebrafish model to investigate the early developmental toxicity of BBP...
September 18, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28934686/changes-in-microbial-community-during-removal-of-bde-153-in-four-types-of-aquatic-sediments
#11
Ying Pan, Juan Chen, Haichao Zhou, Nora F Y Tam
Indigenous microorganisms in sediments could degrade polybrominated diphenyl ethers (PBDEs), but how the microbial communities respond to PBDEs was seldom reported. The effect of BDE-153, a common congener in aquatic environments, on the microbial communities in four types of aquatic sediments was evaluated during the 150days' incubation under an anaerobic condition. The intrinsic potential to remove BDE-153 varied significantly among four sediment types, and the removal rates of mangrove, mudflat, marine and freshwater sediments were 0...
September 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28934659/comparison-on-the-effects-of-water-borne-and-dietary-borne-accumulated-zno-nanoparticles-on-daphnia-magna
#12
Yanjiao Chen, Fengxia Wu, Wenying Li, Tiangang Luan, Li Lin
Nanoparticles (NPs) can exert toxicity to aquatic animals through water and dietary exposure. However, little is known about the contribution of the two exposure pathways to the total toxicity of NPs to aquatic animals. In the present study, we fed Daphnia magna with ZnO NPs-accumulated-algae or directly exposed them to ZnO NPs suspension at the same Zn concentration. The body Zn concentrations were the same in both treatments, but the surface elastic modulus in the water-borne group was lower than that in the dietary-borne group, indicating more severe surface damage in the water-borne treatment...
August 25, 2017: Chemosphere
https://www.readbyqxmd.com/read/28934643/combined-effects-of-microcystin-and-nitrite-on-the-growth-lipid-peroxidation-and-antioxidant-responses-of-the-freshwater-rotifer-brachionus-calyciflorus
#13
Ye Liang, Xinglan Chen, Xuxin Lu, Sichen Jin, Yuanqi Min, Jiaxin Yang
Toxicants released during the degradation of cyanobacterial blooms, such as microcystin-LR (MC-LR) and nitrite (NO2-N), affect the growth of aquatic organisms. The freshwater rotifer Brachionus calyciflorus was exposed to solutions with different combined concentrations of MC-LR (0, 10, 50, 100, and 200μgL(-1)) and NO2-N (0, 2, 4, 6, and 8mgL(-1)) to assess the combined effects of MC-LR and NO2-N on life cycle parameters and oxidative stress. Single solutions of MC-LR 200μgL(-1) and NO2-N 8mgL(-1) were toxic to rotifers...
September 14, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28934642/physiological-responses-and-gene-expression-changes-in-the-western-mosquitofish-gambusia-affinis-exposed-to-progesterone-at-environmentally-relevant-concentrations
#14
Liping Hou, Hongyan Xu, Guangguo Ying, Yang Yang, Hu Shu, Jianliang Zhao, Xuemei Cheng
Progesterone (P4) is a natural and synthetic steroid, widely distributed in the aquatic environments. It can lead to adverse effects on the endocrine system in aquatic organisms. This study investigated the toxicological effects of exposure to environmentally relevant concentrations (4, 44, and 410ng/L) of progesterone for 42 d on adult female mosquitofish, Gambusia affinis. We performed morphological and histological analyses on gonads, anal fins, liver, and gills after the exposure of mosquito fish to P4...
September 14, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28934336/the-oldest-record-of-aquatic-amniote-congenital-scoliosis
#15
Tomasz Szczygielski, Dawid Surmik, Agnieszka Kapuścińska, Bruce M Rothschild
We report the first occurrence of congenital scoliosis in an early Permian aquatic parareptile, Stereosternum tumidum from Paraná state, Brazil. The spine malformation is caused by a congenital hemivertebra. These observations give insight into the biomechanical aspects of underwater locomotion in an axial skeleton-compromised aquatic amniote. This is the oldest record of a hemivertebra in an aquatic animal.
2017: PloS One
https://www.readbyqxmd.com/read/28933714/hr-v-combining-dot-above-o2-and-rpe-relationships-in-an-aquatic-incremental-maximum-test-performed-by-young-women
#16
Gabriela B David, Luana S Andrade, Gustavo Z Schaun, Cristine L Alberton
David, GB, Andrade, LS, Schaun, GZ, and Alberton, CL. HR, V[Combining Dot Above]O2, and RPE relationships in an aquatic incremental maximum test performed by young women. J Strength Cond Res 31(10): 2852-2858, 2017-The purpose of the study was to verify the relationship between oxygen uptake (V[Combining Dot Above]O2), heart rate (HR), rate of perceived exertion (RPE), and cadence (CAD) in an aquatic incremental maximum test performed during a water-based stationary running exercise. The study also verified the best adjustments for these relationships (linear or polynomial)...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28933679/thyroid-hormone-stimulates-the-onset-of-adult-feeding-kinematics-in-zebrafish
#17
Sarah McMenamin, Casey Carter, Wiliam James Cooper
The physical demands for swimming and feeding change dramatically over the course of development for many aquatic animals. Indeed, in teleosts, the transition from larva to adult involves major shifts in both trophic morphology and feeding behavior. A spike in thyroid hormone (TH) coordinates many developmental processes that occur during this adult transition in numerous vertebrate species. Using mutant and transgenic zebrafish, we tested the hypothesis that TH is essential for the transition from larval to adult feeding kinematic profiles...
September 21, 2017: Zebrafish
https://www.readbyqxmd.com/read/28933572/what-areas-of-functioning-are-influenced-by-aquatic-physiotherapy-experiences-of-parents-of-children-with-cerebral-palsy
#18
Javier Güeita-Rodríguez, Francisco García-Muro, Ángel L Rodríguez-Fernández, Johan Lambeck, Cesar Fernández-de-Las-Peñas, Domingo Palacios-Ceña
OBJECTIVES: To explore the experiences regarding aquatic physiotherapy among parents of children with cerebral palsy and to identify a list of relevant intervention categories for aquatic physiotherapy treatments. METHODS: We conducted semi-structured interviews and focus groups using the components of the International Classification of Functioning, Disability and Health (ICF) as a frame of reference to explore and code experiences regarding aquatic physiotherapy...
September 21, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28933248/removals-of-estrone-and-17%C3%AE-estradiol-by-microalgae-cultivation-kinetics-and-removal-mechanisms
#19
Chantima Ruksrithong, Songkeart Phattarapattamawong
Occurrence of estrone (E1) and 17β-estradiol (E2) in environment has attracted the public attention since E1 and E2 cause estrogenicity on aquatic microorganisms. Microalgae cultivation in wastewater is considered as an economical practice since microalgae can be used for not only pollutant removals, but also as energy resources. This research aims to investigate the removals of E1 and E2 in synthetic wastewater by microalgae (i.e. Chlorella vulgaris and Scenedesmus obliquus). At the steady state, Scenedesmus obliquus removed E1 and E2 by 91% and 99%, respectively...
September 21, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28933031/screening-isolation-and-molecular-identification-of-biodegrading-mycobacteria-from-iranian-ecosystems-and-analysis-of-their-biodegradation-activity
#20
Davood Azadi, Hasan Shojaei, Sina Mobasherizadeh, Abass Daei Naser
Anthropogenic origin pollutants including pesticides, heavy metals, pharmaceuticals and industry chemicals impose many risks to human health and environment and bioremediation has been considered the strategy of choice to reduce the risk of hazardous chemicals. In the current study, we aimed to screen and characterize mycobacteria from the diverse range of Iranian aquatic and terrestrial ecosystems with harsh and unfavorable environmental conditions that can be utilized for biodegradation of target pollutants...
September 20, 2017: AMB Express
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