Article
Environmental Sciences
Yibo Zhang, Ming Li, Fang Chang, Malan Yi, Hongmei Ge, Jie Fu, Chenyuan Dang
Summary: This study investigates the differences in responses between cyanobacteria and green algae, which are the recommended test organisms for toxicity assessments, to the same chemical. The results show that these two species have different resistance mechanisms and can alleviate the toxicity of sulfamethoxazole through different pathways. Inconsistent assessment results for antibiotics using cyanobacteria and green algae are likely due to their different resistance mechanisms. Improved indicators or comprehensive assessment methods should be considered for environmental toxicity assessments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Ahmad Fiaz, Daochen Zhu, Jianzhong Sun
Summary: Tetracycline pollution poses a growing global threat to aquatic and terrestrial biodiversity due to its unprecedented use in aquaculture, livestock, and human disease prevention. Although there is significant research data on tetracycline, there is a lack of a report compiling recent literature data for better analysis by policymakers, including detection techniques, degradation mechanisms, degradation products, and policy statements.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
Article
Engineering, Chemical
Qin Yin, Haihong Yan, Yu Liang, Zijian Jiang, Haiyan Wang, Yuegang Nian
Summary: Recent research has found that iron modified biochar can effectively activate peroxydisulfate (PDS), but the role of iron and the complex structure of biochar in the reaction mechanism is still not clear. In this study, magnetized biochar modified with iron catalyst was produced from blue algae. Through experiments, it was determined that the degradation process of the target contaminant (TC) included both free radicals and non-free radicals. The modification of FeOX and the structural properties of biochar increased the production of superoxide radicals (O-2(center dot-) ), promoting the activation of PDS for the degradation of TC.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Yang Yang, Liuwei Xie, Yu Zhu, Yongjia Sheng, Jin Wang, Xiaohong Zhou, Wenyan Li, Chenxi Cao, Yi Yang, Chenyang Han
Summary: By investigating the toxicological mechanism of PFOS-induced liver injury, this study found that PFOS can induce ferroptosis in hepatocytes and cause liver injury in mice. Treatment with ferroptosis and ROS inhibitors can effectively inhibit the liver injury caused by PFOS.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Microbiology
Wei-Lin Su, Marie-Florence Bredeche, Sara Dion, Julie Dauverd, Benedicte Condamine, Arnaud Gutierrez, Erick Denamur, Ivan Matic
Summary: Toxin-antitoxin systems play a crucial role in the survival and maintenance of bacteria, particularly when they face genotoxic stress and chemical competition. TisB, through inducing a drop in the proton motive force, has complex effects in the regulation of cytotoxicity by different antibiotics.
Article
Environmental Sciences
Fahad Khan, Ayesha Shahid, Hui Zhu, Ning Wang, Muhammad Rizwan Javed, Niaz Ahmad, Jianren Xu, Md Asraful Alam, Muhammad Aamer Mehmood
Summary: Biogenic synthesis of nanoparticles using algae is an eco-friendly and cost-effective approach that offers a diverse range of nanomaterials. Algae, with their high growth rate, CO2 sequestering ability, and heavy metal accumulation capacity, as well as their lack of toxic byproducts and minimal energy input, are ideal candidates for nanoparticle synthesis.
Article
Environmental Sciences
Nor Azman Kasan, Siti Zafirah Mohamad Yusof, Hidayah Manan, Wan Mohd Khairul, Hazlina Ahamad Zakeri
Summary: High nutrient loading in aquatic environments has led to harmful algae blooms, particularly those dominated by blue-green algae that release toxins. This study investigated the inhibitory effects of thiourea derivatives on the growth of blue-green algae, successfully isolating a species from Kenyir Lake and synthesizing new compounds that effectively inhibited the algae's growth. Further research is needed to explore practical applications in natural environments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Analytical
Duong Song Thai Duong, Chang-Hyun Jang
Summary: In this study, a liquid crystal-based assay was developed for the real-time detection of tetracycline (Tc). The sensor utilized the chelating properties of Tc to target Tc metal ions, inducing changes in the optical image of the liquid crystal, which could be observed with the naked eye. The sensor exhibited high sensitivity and selectivity, with a detection limit as low as 2.67 pM, making it a promising tool for real-time Tc detection in various fields.
ANALYTICA CHIMICA ACTA
(2023)
Article
Environmental Sciences
Caiqin Wang, Hang Xu, Tingfeng Cheng, Shuting Tang, Daoyong Zhang, Meichao Li, Xiangliang Pan
Summary: This study investigates the effects of hydrophilic and hydrophobic dissolved organic matter (DOM) on the toxic effects of tetracycline (TC) to the photosynthesis of green algae. The results show that both hydrophilic and hydrophobic DOM alleviate TC toxicity to the photosynthesis of green algae. This highlights the importance of DOM in the environmental impact assessment of antibiotics.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Biljana Mojsoska, Melanie Ghoul, Gabriel G. Perron, Havard Jenssen, Fatima AlZahra'a Alatraktchi
Summary: This study explores the impact of sub-inhibitory antibiotic concentrations on the production of virulence factors in environmental Pseudomonas aeruginosa strains, showing that sub-inhibitory antibiotic concentrations can alter bacterial toxin production, with strain-specific effects. Additionally, biologically relevant measured toxin concentrations were found to decrease the viability of cultured epithelial cells. This suggests that antibiotic-induced virulence should be considered in routine pathogen testing.
Article
Chemistry, Analytical
Ruiqing Sun, Ping Liu, Yingjia Dong, Qingli Yang, Yongchao Ma
Summary: In this study, a dual-mode green emissive fluorescent probe was developed for real-time detection of doxycycline. By using highly fluorescent NCNSs immobilized on electrospun films, the fluorescence stability and convenient detection of doxycycline were achieved. Integration of the electrospun films with a smartphone provided a promising method for real-time identification of doxycycline in food analysis.
ANALYTICAL METHODS
(2023)
Article
Multidisciplinary Sciences
Yuko Makita, Shigekatsu Suzuki, Keiji Fushimi, Setsuko Shimada, Aya Suehisa, Manami Hirata, Tomoko Kuriyama, Yukio Kurihara, Hidefumi Hamasaki, Emiko Okubo-Kurihara, Kazutoshi Yoshitake, Tsuyoshi Watanabe, Masaaki Sakuta, Takashi Gojobori, Tomoko Sakami, Rei Narikawa, Haruyo Yamaguchi, Masanobu Kawachi, Minami Matsui
Summary: Photoreceptors are crucial for various developmental stages from green algae to land plants, and blue light sensing is essential for adapting to marine environments. The discovery of a chimeric dual orange/far-red and blue light receptor in Pycnococcus provasolii sheds light on the mechanisms of light adaptation in marine organisms.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Medicinal
Michael G. Darnowski, Taylor D. Lanosky, Andre R. Paquette, Christopher N. Boddy
Summary: Research shows that armeniaspirol family of natural product antibiotics disrupt the proton motive force (PMF) by shuttling protons across the membrane and inhibit the activity of ATP-dependent proteases ClpXP and ClpYQ. However, disrupting the PMF alone is not sufficient for antibiotic activity, as inhibition of these two enzymes is also necessary.
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2023)
Article
Biology
Yvonne Vadeboncoeur, Marianne Moore, Simon D. Stewart, Sudeep Chandra, Karen S. Atkins, Jill S. Baron, Keith Bouma-Gregson, Soren Brothers, Steven N. Francoeur, Laurel Genzoli, Scott N. Higgins, Sabine Hilt, Leon R. Katona, David Kelly, Isabella A. Oleksy, Ted Ozersky, Mary E. Power, Derek Roberts, Adrianne P. Smits, Oleg Timoshkin, Flavia Tromboni, M. Jake Vander Zanden, Ekaterina A. Volkova, Sean Waters, Susanna A. Wood, Masumi Yamamuro
Summary: Nearshore habitats of deep lakes with high water quality are facing increased occurrences of filamentous algal blooms, posing potential threats to lake water quality and ecosystem. Coordinated efforts among the public, managers, and scientists are needed to study this phenomenon and take effective measures to protect lake ecosystems.
Article
Chemistry, Applied
Yingying Qian, Peiqi Liu, Haifeng Zhuang, Lin Chen, Liangyuan Jia, Jiuzhong Yang, Yang Pan, Yingquan Chen
Summary: This study investigated the catalytic fast pyrolysis of blue-green algae and its nitrogenous model compounds using advanced experimental setup and online mass spectrometry. Through statistical analysis of mass spectra, six different product groups were identified under different biomass-to-catalyst ratios (BCR), and the reaction pathways of catalytic conversion were proposed.
FUEL PROCESSING TECHNOLOGY
(2022)