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Open research questions in Pharmaceutical and Antibiotic Environmental Impacts

155 unresolved questions extracted from the limitations and future-work sections of 473 Pharmaceutical and Antibiotic Environmental Impacts papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • One of the challenges is the limited scale of the study population. Another challenge is the variability in shedding at the sampling timepoints. The study also faced the challenge of recruiting farms for the study.

    Pilot longitudinal observational study of the effect of common stress events on the shedding of antimicrobial resistant E. coli during the pig and poultry production cycle · 2026 · DOI

  • Due to this being a pilot study, we only included a small number of farms, - Expansion to include additional farms would be beneficial, - The limited scale of the study population meant that statistical analysis to see if a significant difference existed was not undertaken

    Pilot longitudinal observational study of the effect of common stress events on the shedding of antimicrobial resistant E. coli during the pig and poultry production cycle · 2026 · DOI

  • limited knowledge on inter- and transgenerational effects of pesticide and veterinary drug residues - need for new management strategies for these residues - lack of understanding of the specific effects of each contaminant and their long-term impact

    Dietary Exposure to Pesticide and Veterinary Drug Residues and Their Effects on Human Fertility and Embryo Development: A Global Overview · 2024 · DOI

  • In Lebanon, little is known about the work undertaken by community pharmacists in managing such waste, despite their accessibility and central role in medication distribution.

    Assessment of Lebanese community pharmacists’ perceptions and practices towards pharmaceutical waste disposal · 2026 · DOI

  • , chemical and bio-surfactants) on TC adsorption to iron oxides remain poorly understood.

    Comparison of the enhanced roles of a chemical surfactant and a bio-surfactant in the adsorption of tetracycline onto iron oxides · 2026 · DOI

  • However, the role of phages in heavy metal-driven ARG dissemination and the underlying mechanisms remain poorly understood.

    Phages drive the dissemination of antibiotic resistance genes by facilitating host adaptation to heavy metal stress · 2026 · DOI

  • The livestock gut microbiota serves as a reservoir for antimicrobial resistance (AMR), yet Caprinae species remain understudied.

    Metagenomic analysis of antimicrobial resistance, virulence, and mobile genetic elements in the gut microbiota of Caprinae species · 2026 · DOI

  • However, their relative contributions to shaping the antibiotic resistome in treatment systems remain unclear.

    Antibiotics or Heavy Metals in Livestock Wastewater: Which One Is the Main Driver for the Development and Spread of Antibiotic Resistance under Coexposure? · 2026 · DOI

  • Evidence from antibiotic residues, metals, pesticides, biocides, microplastics, wastewater, genomic surveillance, and source-attribution studies indicates that biological plausibility alone is insufficient to establish human health risk.

    Environmental pollutants as modifiers of antimicrobial resistance risk across food systems: a One Health perspective · 2026 · DOI

  • The contradictory results reported in some studies can be attributed to differences in experimental conditions.

    Photodegradation of typical psychotropic drugs in the aquatic environment: a critical review · 2025 · DOI

  • Based on this analysis of the existing literature, the review also identifies several key aspects that warrant further research on PD photodegradation.

    Photodegradation of typical psychotropic drugs in the aquatic environment: a critical review · 2025 · DOI

  • Despite advances in dispersal mechanisms and risk assessment of antibiotic resistance genes (ARGs), how plants influence ARG contamination in agricultural soils remains underexplored.

    Plant Diversity Reduces the Risk of Antibiotic Resistance Genes in Agroecosystems · 2025 · DOI

  • While AMR research has primarily focused on medical and veterinary settings, the spread of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) through natural environments, including soil, remains poorly understood.

    The link between antibiotic resistance level and soil physico-chemical properties · 2025 · DOI

  • Background and objective Despite its critical role in individual and societal health, food hygiene remains underexplored.

    A scoping review of the prevalence of antimicrobial-resistant pathogens and signatures in ready-to-eat street foods in Africa: implications for public health · 2025 · DOI

  • Pharmaceuticals and personal care products (PPCPs) are significant contaminants of global concern, yet their aquatic ecological risks and associated driving factors remain poorly understood.

    Pharmaceutical and Personal Care Products (PPCPs) in Global Surface Waters: Risk and Drivers · 2025 · DOI

  • The widespread presence of antibiotics in aquatic ecosystems is a global challenge, yet the occurrence and risks associated with their transformation products (TPs) remain poorly understood.

    Incorporating Transformation Products for an Integrated Assessment of Antibiotic Pollution and Risks in Surface Water · 2025 · DOI

  • Indirect photochemistry is known to degrade many recalcitrant contaminants in natural waters but has not been tested for fluconazole.

    Environmental Fate of the Azole Fungicide Fluconazole and Its Persistent and Mobile Transformation Product 1,2,4-Triazole · 2025 · DOI

  • However, little is known about the regulatory role and mechanisms of antimicrobial biodegradation processes in the transmission of antibiotic resistance genes (ARGs) in the environment.

    Positive Contribution of Antimicrobial Biodegradation in Mitigating Conjugative Transfer of Antibiotic Resistance Genes · 2025 · DOI

  • However, one key limitation is that the quantitative capacity of metagenomics is not well-defined.

    Evaluating Quantitative Metagenomics for Environmental Monitoring of Antibiotic Resistance and Establishing Detection Limits · 2025 · DOI

  • However, the consequences of prolonged exposure to environmentally relevant chlorine concentrations on antimicrobial resistance (AMR) evolution and its driving mechanism in bacteria remain unclear.

    Prolonged Exposure to Environmentally Relevant Concentrations of Chlorine Induces Heritable Antimicrobial Resistance in Disinfection Residual Pseudomonas aeruginosa · 2025 · DOI

  • However, the stability of these markers in sewer systems, a crucial factor for reliable WBE, is not well understood.

    Stability of Antibiotics and Their Metabolites in Sewers: Implications for Wastewater-Based Epidemiology and Antibiotic Sustainability · 2025 · DOI

  • However, the cellular mechanisms through which subinhibitory concentrations of ribosome-targeting antibiotics affect denitrification and nitrous oxide (N 2 O) emissions remain inadequately understood.

    Exposure to Environmentally Relevant Concentrations of Antibiotics Increases N 2 O Emissions and Delays Nitrate Removal: New Insights into Bacteriostatic Antibiotics at the Cellular Level · 2025 · DOI

  • However, how ARGs evolve during natural succession in pristine ecosystems remains poorly understood.

    Holocene Chronosequences Reveal the Temporal Dynamics of Antibiotic Resistance Genes during Sediment Development · 2025 · DOI

  • While extracellular polymeric substances (EPS) are known to envelop microbial cells and mediate intercellular interactions, their role in conjugation, the predominant HGT mode, remains unclear.

    Unveiling the Impact of Extracellular Polymeric Substances (EPS) on the Conjugative Transfer of Antibiotic Resistance Genes (ARGs) · 2025 · DOI

  • These findings will lay the groundwork for further research into the inactivation of pharmaceutical active substances and their metabolites in sewage and sludge.

    Removal efficiency of pharmaceuticals during the wastewater treatment process: Emission and environmental risk assessment · 2025 · DOI

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155 open questions have been extracted from the limitations and future-work passages of 473 Pharmaceutical and Antibiotic Environmental Impacts papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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