使用PMF和蒙特卡洛模拟的Dafeng河流盆地抗生素的来源分配和生态风险评估
Jinqiu Song1, Rongle Xu2, Denghui Li2
1School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
Environmental geochemistry and health
|October 16, 2024
概括
达芬河流域的抗生素污染是一个重大问题. 诺和四环素占主导地位,畜牧业和水产养殖被确定为生态风险的主要来源.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 评估水质水质的评估.
背景情况:
- 抗生素在水生环境中普遍存在,对生态系统和人类健康构成风险.
- 了解抗生素的分布和来源对于有效的环境管理至关重要.
研究的目的:
- 调查Dafeng河流域四大抗生素组 (硫胺,类,类,四环素) 的空间分布,来源和生态风险.
- 确定导致抗生素污染和生态危害的主要原因.
主要方法:
- 在中国南部达芬河流域的案例研究方法.
- 积极矩阵分解 (PFM) 和蒙特卡洛模拟的应用.
- 在地表水和沉积物中分析抗生素度.
主要成果:
- 在地表水和沉积物中分别检测到43和39种抗生素;诺 (QN) 和四环素 (TC) 主导.
- 在地表水中发现的抗生素含量最高的是中游,而沉积物度在上游达到峰值.
- 确定了家用污水,农业排水,牲畜排放,污水处理厂和水产养殖作为来源;QNs构成最高的生态风险.
结论:
- 牲畜排放 (31.4%) 和水产养殖 (23.4%) 是该盆地抗生素相关生态风险的主要来源.
- 这些发现为在达芬河流域管理抗生素污染提供了关键数据.
- 建议针对特定来源进行有针对性的干预,以减轻风险.
更多相关视频
05:46Identification of Pharmaceuticals in The Aquatic Environment Using HPLC-ESI-Q-TOF-MS and Elimination of Erythromycin Through Photo-Induced Degradation
Published on: August 1, 2018
13.0K
16:02Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation
Published on: February 10, 2023
2.6K
相关概念视频
Pharmacodynamic Models: Overview
Pharmacodynamic (PD) responses describe the interaction between a drug and its biological target, culminating in a physiological effect. These responses can be classified into different types: continuous variables, such as blood glucose levels; categorical outcomes, like survival rates; and time-to-event metrics, such as disease progression. Understanding and modeling PD responses are critical for optimizing drug efficacy and safety.PD models describe the relationship between drug concentration...
Impact of Pharmacokinetic–Pharmacodynamic Models: Regulatory Decisions
PK–PD modeling has significantly influenced FDA regulatory decisions, particularly drug approval, dosage optimization, and labeling. These models integrate pharmacokinetics (PK) and pharmacodynamics (PD) to predict drug behavior and effects, aiding in optimizing dosing regimens and enhancing the probability of clinical trial success.One notable example is Nesiritide (Natrecor®), a recombinant human brain natriuretic peptide for treating acute decompensated congestive heart failure (CHF).
Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
