Article
Environmental Sciences
Wenbo Deng, Yajing Wang, Wenjuan Liu
Summary: The adsorption of DOM and Pb(II) on Mn-substituted goethite samples was investigated. The results showed that Mn substitution increased the specific surface area of goethite, resulting in more adsorption of DOM and Pb(II). However, Mn substitution also weakened the electrostatic attraction between DOM and the minerals, reducing the adsorption capacity of goethite for DOM. Overall, Mn-goethite can be used to sequester DOM and remediate soil contaminated with PTEs.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Ping Chen, Duo Song, Xin Zhang, Qiaoqin Xie, Yuefei Zhou, Haibo Liu, Liang Xu, Tianhu Chen, Kevin M. Rosso
Summary: This study examines the competitive adsorption of phosphate and silicate on goethite and reveals the pH-dependent competition between these two species. The results demonstrate selective adsorption of phosphate at low pH and silicate at high pH, with significant competition observed at intermediate pH. The findings suggest that goethite surface chemistry plays a crucial role in controlling the retention of these oxyanions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Yu Xiao, Haojie Lu, Wenbing Tan, Jun Tang, Yang Wang, Junxiang Shi, Tingqiao Yu, Ying Yuan
Summary: This study found that compost-derived humic acids (HAs) in the middle and late stages can promote the reductive dechlorination of PCP in paddy soil, while those in the early stage had opposite effects. Significant differences were observed in the components of HAs from different composting stages, with middle-stage HAs showing the best dechlorination effects. The electron transfer capacities (ETC) of middle-stage compost-derived HAs were significantly higher than those in the early and later stages, contributing to the detoxification and mineralization of PCP in the soil.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Multidisciplinary Sciences
Fande Meng, Qiuxiang Huang, Yongbing Cai, Guodong Yuan, Liang Xiao, Fengxiang X. Han
Summary: This study investigated the effects of different sources of humic acid (HA) on soil pH and uranium fraction transformation. The results showed that the source of HA had a significant impact on soil pH and the dynamic behavior of uranium fractions. Therefore, the source of HA and uranium should be considered when using HA as a remediation material for uranium-contaminated soils.
Article
Environmental Sciences
Xu Zhang, Daniel Dianchen Gang, Peizhe Sun, Qiyu Lian, Hong Yao
Summary: In this study, goethite-biochar composites were developed and used for phosphate recovery from urine. The amorphous structure of the composites showed higher adsorption capacity compared to crystalline goethite, making it a promising alternative for slow-phosphate-release fertilizers. The active sites for phosphate adsorption were identified as the Fe-OH bonds forming inner-sphere complexes.
Article
Engineering, Environmental
Bo Gong, Wei Chen, Patrick H. -L. Sit, Xian-Wei Liu, Chen Qian, Han-Qing Yu
Summary: Proteins, as a major component of dissolved organic matter (DOM), interact with humic acid (HA) and affect the environmental behavior of DOM. The study investigated the interaction mechanisms between tryptophan-containing proteins and HA using various spectroscopic techniques. Results showed that bovine serum albumin (BSA) was easily quenched by HA, while L-tryptophan (L-Trp) was more stable. Multiple groups in HA contributed to static quenching in protein-HA and L-Trp-HA mixtures. Molecular docking and DFT simulations highlighted the role of residues surrounding HA groups in their interactions. Direct interaction between tryptophan residue and HA may not be necessary for fluorescence response.
Review
Cell Biology
Xiurong Wang, Shaoying Ai, Hong Liao
Summary: Acid soils limit crop production due to deficiencies in essential nutrients, such as phosphorus, and toxicities of metal elements, including aluminum, manganese, and cadmium. Recent advances in understanding the genetic mechanisms underlying tolerance to these toxicities have been made, as well as the interactions between phosphorus nutrition and the toxicities. Further research is needed to decipher the signaling pathways and regulatory elements involved in these interactions, and to develop new strategies for remediation of acid soils.
Article
Engineering, Environmental
Ying Chen, Huan Tang, Ya Cheng, Tinglin Huang, Baoshan Xing
Summary: The interaction between microplastics (MPs) and humic acid (HA) significantly affects their characteristics and fate in the environment. It was found that MP-HA interaction reduces the number of hydrogen bonds in HA domains, causing the water molecules bridging the hydrogen bonds to shift to the exterior regions of the MP-HA aggregates. Additionally, the distribution of Ca2+ around HA is impaired in the presence of MPs, leading to the suppression of Ca2+-HA electrostatic interaction. However, the MP-HA interaction improves the distribution of water molecules and metal cations around the MPs, accelerating the migration of polyethylene and polystyrene.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Xiangyang Gui, Bingqing Song, Ming Chen, Xiaoyun Xu, Zhefan Ren, Xing Li, Xinde Cao
Summary: This study found that soil kaolin, goethite, and humic acid colloids have significant effects on the stability and aggregation of biochar colloids. Kaolin and humic acid can enhance the stability of biochar colloids, while goethite can rapidly combine with biochar colloids, leading to aggregation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Plant Sciences
Jianyuan Jing, Shuiqin Zhang, Liang Yuan, Yanting Li, Chengrong Chen, Bingqiang Zhao
Summary: In this study, PHA extracted from HAP was evaluated for its effects on maize seedling growth and nutrient absorption in hydroponic culture. The results showed that moderate concentrations of PHA can stimulate maize seedling growth and nutrient absorption to a similar extent as high concentrations of raw HA.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Soil Science
Sensen Wu, Chengshuai Liu, Xiaoguang Li, Baohua Xiao, Qingyang Hu
Summary: The organic carbon sequestered in soil aggregates plays a significant role in carbon storage on the Earth's surface. The interaction between humic acid-coated goethite particles and the aggregation process during freeze-thaw cycles is complex and involves both electrostatic repulsion and hydrogen bonding mechanisms. This study provides insights into the formation of aggregates in soils rich in iron (hydr) oxides and their potential role in reducing CO2 emissions.
Article
Agronomy
Jianyuan Jing, Shuiqin Zhang, Liang Yuan, Yanting Li, Yingqiang Zhang, Xinxin Ye, Ligan Zhang, Qizhong Xiong, Yingying Wang, Bingqiang Zhao
Summary: Incorporating humic acid (HA) into phosphate fertilizers can enhance the migration and availability of fertilizer-derived phosphorus (P) in soil. This study investigated the effects of HA-enhanced phosphate fertilizers (HAPs) with different HA proportions on P fixation rate, P migration, P transformation, and soil microorganisms. The results showed that adding 0.1% HA had no impact on P migration and transformation, while adding 0.5-10% HA increased P migration and reduced water-soluble P fixation rate compared to conventional phosphate fertilizer (CP). Clustering analysis revealed that 0.5% HA had similar effects to higher HA proportions (1% and 5%). Overall, 0.5% HA was determined to be the optimal amount for HAP production.
Article
Engineering, Environmental
Danyang Li, Weichen Lin, Ruipeng Shao, Yue-Xiao Shen, Xianzheng Zhu, Xia Huang
Summary: The study identified a critical silica concentration where synergistic fouling with humic acid caused severe fouling in the reverse osmosis membrane process. Below the critical point, no severe fouling was observed, while above the critical point, concentrated silica acted as the prior foulant causing severe synergistic fouling with humic acid.
Article
Forestry
Yu Tan, Kaijun Yang, Zhenfeng Xu, Li Zhang, Han Li, Chengming You, Bo Tan
Summary: Soil fauna play vital roles in litter humification in cold forests, with their contributions varying among species and seasons.
Article
Biochemistry & Molecular Biology
Magdalena Zaborowska, Jadwiga Wyszkowska, Agata Borowik, Jan Kucharski
Summary: The research aimed to investigate the impact of bisphenol A and zinc on soil homeostasis and microbial activity. The results indicated that the combination of bisphenol A and zinc had a negative effect on the soil microbiome and enzymatic activity. Sorghum was found to be more sensitive to the xenobiotics than Panicum virgatum.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
Xinwei Ren, Lan Wang, Jingchun Tang, Hongwen Sun, John P. Giesy
Summary: Multiple sources of microplastics in farmland can alter the microbial community and plant growth, potentially affecting food safety.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Phillip J. Ankley, Yuwei Xie, Sonya Havens, Lisa Peters, Lauren Timlick, Jose Luis Rodriguez-Gil, John P. Giesy, Vince P. Palace
Summary: DNA metabarcoding and RNA metabarcoding were compared in assessing zooplankton communities responses. Both methods showed similar richness and abundance rank. The NV indicator showed greater differential responses in community compositions compared to DNA or RNA metabarcoding.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Ulyana Fuchylo, Hattan A. Alharbi, Alper James Alcaraz, Paul D. Jones, John P. Giesy, Markus Hecker, Markus Brinkmann
Summary: The integrity of tight junctions in the epithelial cell layer of fish gills controls the permeation of chemicals. Inflammation induced by bacterial lipopolysaccharides (LPS) affects tight junctions and the bioavailability of chemicals. This study shows that exposure to LPS reduces the integrity of tight junctions in rainbow trout gill cells, leading to increased permeation of chemicals from oil sands process-affected water (OSPW).
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Ashenafi Yohannes Battamo, Olli Varis, John P. Giesy, Belay Tafa Oba, Moses Akintayo Aborisade, Peizhe Sun, Yongkui Yang, Lin Zhao
Summary: This study identifies and quantifies freshwater vulnerability in Belt and Road Initiative (BRI) countries and highlights the reasons for such vulnerability. The results show that 69% of the countries assessed had medium to highest freshwater vulnerability, with Sub-Saharan Africa and the stretch from South Asia to the Mediterranean being the most vulnerable regions. The analysis indicates that the root causes of the highest vulnerability differ among regions, with low adaptive capacity being the primary reason in Sub-Saharan Africa and high sensitivity in the most vulnerable parts of Asia.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Engineering, Environmental
Jun He, Jun Chen, Feng Chen, Liang Chen, John P. Giesy, Yuming Guo, Gaodao Liang, Xuwei Deng, Wenjing Wang, Ping Xie
Summary: Chronic exposure to microcystins, a type of water contaminant produced by cyanobacteria, can have significant health risks. By using nuclear magnetic resonance and mass spectrometry, the study investigated the serum metabolic profiles of individuals living near Lake Chao and found evidence of renal impairments and metabolic dysfunction. The findings suggest that the recommended daily intake should be reduced to effectively protect human health.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mingming Tian, Pu Xia, Lu Yan, Xiao Gou, John P. Giesy, Jiayin Dai, Hongxia Yu, Xiaowei Zhang
Summary: Understanding individual susceptibility to the adverse health effects of air pollutants is challenging in health risk assessment. This study developed an integrated approach combining CRISPR screening and epidemiological analysis to identify individual susceptibility to formaldehyde-induced lung injury. The gene HTR4 was found to be genetically associated with COPD susceptibility, and functionality and enhanced expression of HTR4 were required for susceptibility to formaldehyde-induced lung injury. Specific genetic and epigenetic characteristics of HTR4 were associated with COPD progression and prevalence, suggesting their potential as biomarkers for individual susceptibility to formaldehyde-induced respiratory effects.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Hannah Mahoney, Francisco C. da Silva Junior, Catherine Roberts, Matthew Schultz, Xiaowen Ji, Alper James Alcaraz, David Montgomery, Summer Selinger, Jonathan K. Challis, John P. Giesy, Lynn Weber, David Janz, Steve Wiseman, Markus Hecker, Markus Brinkmann
Summary: N-(1,3-Dimethylbutyl)-N-phenyl-p-phenylenediamine-quinone (6PPD-quinone) is highly toxic to certain salmonids and may affect respiration. In vitro experiments showed that 6PPD-quinone can uncouple mitochondrial respiration in fish cells, leading to decreased cell viability and increased oxygen consumption rate.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Biochemistry & Molecular Biology
Mourad A. M. Aboul-Soud, Hanane Ennaji, Ashok Kumar, Mohammad A. Alfhili, Ahmed Bari, Maqusood Ahamed, Mohamed Chebaibi, Mohammed Bourhia, Farid Khallouki, Khalid M. Alghamdi, John P. Giesy
Summary: The study found that EECC exhibits significant antioxidant and anticancer activities, particularly against breast cancer cells. The cytotoxicity of EECC is mediated by the generation of ROS, leading to apoptosis and necrosis, possibly through binding to the caspase-3 receptor.
Article
Environmental Sciences
Hattan A. Alharbi, Khaled D. Alotaibi, Mohamed H. EL-Saeid, John P. Giesy
Summary: This study aimed to assess the contents of polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) in biochars generated from different sources and pyrolysis temperatures. The results showed that the contents of PAHs and HMs in biochar were significantly influenced by the feedstock and pyrolysis temperature. Therefore, the effects of feedstock and pyrolysis temperature should be considered in the production and use of biochar.
Article
Engineering, Environmental
Hannah Mahoney, Jenna Cantin, Josephine Rybchuk, Yuwei Xie, John P. Giesy, Markus Brinkmann
Summary: This study evaluated the toxic potency of PFECHS, an emerging PFAS, on zebrafish embryos and its potential effects in aquatic environments. The results showed that PFECHS caused fewer mortalities than PFOS in both acute and chronic exposures but resulted in a similar incidence of deformities. Exposure to PFECHS also increased the levels of specific genes at concentrations relevant to the environment. These findings provide insights into the safety of emerging PFAS alternatives in the aquatic environment and highlight the potential similarity of effects with legacy PFASs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Mohammed Bourhia, Abdullah A. A. Alyousef, Ghizlane Doumane, Hamza Saghrouchni, John P. P. Giesy, Lahcen Ouahmane, Fatiha E. L. Gueddari, Yazeed A. A. Al-Sheikh, Mourad A. M. Aboul-Soud
Summary: This study investigated the antioxidant, antibacterial, and antifungal properties of the essential oil from the leaves of Withania adpressa Coss ex. The oil contained eight compounds, with caryophyllene, longifolene, delta-cadinene, and carene being the predominant ones. The essential oil showed promising antioxidant and antimicrobial activities.
Review
Chemistry, Multidisciplinary
Laila El Hanafi, Ibrahim Mssillou, Houria Nekhla, Aymane Bessi, Meryem Bakour, Hassan Laaroussi, Zineb Ben Khadda, Chaimae Slimani, John P. Giesy, Hassane Greche, Gomaa A. M. Ali, Mourad A. M. Aboul-Soud
Summary: Recently, processed foods have become an important part of human eating habits. Sesame seeds, known for their rich phytochemical composition, are economically important in many countries. Dehulling and roasting, two common processing techniques, have different effects on the nutritional quality of sesame seeds.
JOURNAL OF CHEMISTRY
(2023)
Article
Microbiology
Asha Rani, Ravi Ranjan, Solidea M. C. Bonina, Mahsa Izadmehr, John P. P. Giesy, An Li, Neil C. C. Sturchio, Karl J. J. Rockne
Summary: This study aimed to understand the sestonic microbial community structure in the Laurentian Great Lakes by sequencing microbial communities at different water depths. The results showed that physicochemical parameters such as dissolved oxygen, pH, temperature, and salinity were major drivers shaping the community composition in the Great Lakes.
Review
Health Care Sciences & Services
Farid Khallouki, Lhoussain Hajji, Somayya Saber, Toufik Bouddine, Mouad Edderkaoui, Mohammed Bourhia, Nora Mir, Adrian Lim, Adil El Midaoui, John P. Giesy, Mourad A. M. Aboul-Soud, Sandrine Silvente-Poirot, Marc Poirot
Summary: Breast cancer is the most common and deadliest cancer in women worldwide. Tamoxifen is widely prescribed for estrogen-receptor-positive breast cancer and has both anticancer and chemo-preventive effects. This review focuses on the potential importance of vitamin E in breast cancer chemo-prevention and how it can affect the actions of tamoxifen. The findings suggest that individually designed nutritional interventions with vitamin E should be further considered for breast cancer patients.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Engineering, Environmental
Jihyun Cha, Seongjin Hong, Junghyun Lee, Jiyun Gwak, Mungi Kim, Sori Mok, Hyo-Bang Moon, Paul D. Jones, John P. Giesy, Jong Seong Khim
Summary: Major aryl hydrocarbon receptor (AhR) agonists were identified in the blubber, liver, and muscle extracts of six long-beaked common dolphins and one fin whale collected from Korean coastal waters. The concentrations of these agonists were higher in the blubber and liver extracts, showing tissue-specific accumulation. Five new polar AhR agonists were also identified, and they have the potential to biomagnify in the marine food chain.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
