Next Issue
Volume 13, June
Previous Issue
Volume 12, December
 
 

J. Xenobiot., Volume 13, Issue 1 (March 2023) – 13 articles

Cover Story (view full-size image): Many modern epidemiological studies, especially from the USA, have shown a strong causal relationship between cannabis exposure and congenital anomalies (CAs). We found that European nations with high or rising cannabis use had a higher rate of orofacial CAs (FCAs) than elsewhere in that continent. Cannabis was shown to fulfill criteria for causality for orofacial clefts, anotia, congenital cataract, and holoprosencephaly at both bivariate and multivariate analysis after adjustment and also in space-time modelling. Thus, rising cannabis use is associated with many FCAs, fulfils epidemiological criteria for causality and confirms other human and animal research. The data indicate particular concerns relating to brain development and exponential genotoxic dose–responses and urges great caution with regard to community cannabinoid penetration. View this paper
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.
  • You may sign up for e-mail alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.
Order results
Result details
Section
Select all
Export citation of selected articles as:
13 pages, 1278 KiB  
Article
Ecosystem Protection through Myco-Remediation of Chromium and Arsenic
by Neel Kamal, Jagdish Parshad, Baljeet Singh Saharan, Monika Kayasth, Vishal Mudgal, Joginder Singh Duhan, Balwan Singh Mandal and Pardeep Kumar Sadh
J. Xenobiot. 2023, 13(1), 159-171; https://doi.org/10.3390/jox13010013 - 09 Mar 2023
Cited by 7 | Viewed by 2273
Abstract
The current study emphasizes fungi as an important tool against heavy metals and how isolated fungal species can be used to create a successful strategy for the bioremediation of chromium and arsenic-contaminated sites/soils. Globally, heavy metal pollution is a serious issue. In the [...] Read more.
The current study emphasizes fungi as an important tool against heavy metals and how isolated fungal species can be used to create a successful strategy for the bioremediation of chromium and arsenic-contaminated sites/soils. Globally, heavy metal pollution is a serious issue. In the current investigation, contaminated sites were chosen, and samples could be taken from various localities of Hisar (29.1492° N, 75.7217° E) and Panipat (29.3909° N, 76.9635° E), India. A total of 19 fungal isolates were obtained from the collected samples through the enrichment culture technique using PDA media supplemented with Cr as chromic chloride hexahydrate (50 mg/L) and As as sodium arsenate (10 mg/L) and the potential of fungal isolates to be used for the removal of heavy metals was examined. The isolates were screened for minimum inhibitory concentrations (MIC) exhibiting tolerance capabilities, and the four best isolates C1, C3, A2, and A6 with the highest MICs (>5000 mg/L), were chosen for further investigations. To use the chosen isolates in the remediation of heavy metals (Cr and As), the culture conditions were optimized. The fungal isolates C1 and C3 estimated the highest removal of 58.60% and 57.00% at 50 mg/L chromium concentration, while the isolates A6 and A2 recorded the highest removal efficiency of 80% and 56% at 10 mg/L arsenic concentration under optimal conditions. Finally, the chosen fungal isolates C1 and A6 were molecularly identified as Aspergillus tamarii and Aspergillus ustus, respectively. Full article
(This article belongs to the Section Ecotoxicology)
Show Figures

Figure 1

11 pages, 2336 KiB  
Brief Report
Nanoformulation of a Trypanocidal Drug Isometamidium Chloride Ameliorates the Apurinic-Apyrimidinic DNA Sites/Genotoxic Effects in Horse Blood Cells
by Sandeep Singh, Balvinder Kumar, Neeraj Dilbaghi, Nisha Devi, Minakshi Prasad and Anju Manuja
J. Xenobiot. 2023, 13(1), 148-158; https://doi.org/10.3390/jox13010012 - 02 Mar 2023
Viewed by 1675
Abstract
Isometamidium chloride (ISM) is a trypanocide for the prophylactic and therapeutic use against vector-borne animal trypanosomosis (mainly Surra caused by Trypanosoma evansi) and African animal trypanosomosis caused by T. congolense/T. vivax/T. brucei). ISM was found to be [...] Read more.
Isometamidium chloride (ISM) is a trypanocide for the prophylactic and therapeutic use against vector-borne animal trypanosomosis (mainly Surra caused by Trypanosoma evansi) and African animal trypanosomosis caused by T. congolense/T. vivax/T. brucei). ISM was found to be an efficient trypanocide for therapeutic/prophylactic use against trypanosomosis; however, it produces some local and systemic detrimental effects in animals. We synthesized isometamidium chloride-loaded alginate gum acacia nanoformulation (ISM SANPS) to lessen the detrimental side effects of isometamidium chloride (ISM) while treating trypanosomal diseases. We intended to determine the cytocompatibility/toxicity, and DNA deterioration/chromosomal structural or number changes (genotoxicity) of ISM SANPs using mammalian cells in a concentration-dependent manner. Apurinic/apyrimidinic (AP) sites are one of the major types of DNA lesions formed during base excision and repair of oxidized, deaminated, or alkylated bases. The intensity of the cellular AP site is an excellent marker of the deterioration of DNA quality. We thought it pertinent to quantify the AP sites in ISM SANPs-treated cells. Our investigations established a dose-dependent cyto-compatibility or toxicity and DNA impairment (genotoxicity) in ISM SANPs-treated horse peripheral blood mononuclear cells. ISM SANPs were biocompatible at various concentrations tested on the mammalian cells. Full article
(This article belongs to the Section Nanotoxicology and Nanopharmacology)
Show Figures

Figure 1

16 pages, 4490 KiB  
Article
Copper and Nickel Induce Changes in the Lipid and Fatty Acid Composition of Anodonta cygnea
by Natalia Fokina
J. Xenobiot. 2023, 13(1), 132-147; https://doi.org/10.3390/jox13010011 - 01 Mar 2023
Cited by 1 | Viewed by 1465
Abstract
The effect of copper and nickel ions on the lipid composition of freshwater mussels Anodonta cygnea was investigated using an aquarium experiment. The contents of the main lipid classes were determined using thin layer chromatography and spectrophotometry, and the fatty acid composition was [...] Read more.
The effect of copper and nickel ions on the lipid composition of freshwater mussels Anodonta cygnea was investigated using an aquarium experiment. The contents of the main lipid classes were determined using thin layer chromatography and spectrophotometry, and the fatty acid composition was analysed using gas–liquid chromatography. The results indicated that copper and nickel had different effects on the mussels’ lipid composition, with copper producing less effect on the composition of lipids and fatty acids than nickel. On the first experiment day, excessive copper content in the organism caused oxidative stress and modifications in membrane lipids, which returned to their initial level by the end of the experiment. Nickel accumulated predominantly in gills; however, significant modifications in lipids and fatty acids were seen also in the digestive gland from the first day of the experiment. This indicated the activation of nickel-induced lipid peroxidation processes. Moreover, this study revealed a dose-dependent effect of nickel on lipid composition, which was likely related to the development of compensatory biochemical mechanisms in response to nickel-induced oxidative stress. A comparative study of the lipid composition alteration in mussels in response to copper and nickel action revealed the consequences of the toxic impact of metal ions and the defensive mechanisms that organisms employ to detoxify and remove xenobiotics. Full article
(This article belongs to the Section Ecotoxicology)
Show Figures

Figure 1

11 pages, 293 KiB  
Review
Do Synthetic Fragrances in Personal Care and Household Products Impact Indoor Air Quality and Pose Health Risks?
by Gandhi Rádis-Baptista
J. Xenobiot. 2023, 13(1), 121-131; https://doi.org/10.3390/jox13010010 - 01 Mar 2023
Cited by 7 | Viewed by 5383
Abstract
Fragrance compounds (synthetic fragrances or natural essential oils) comprise formulations of specific combinations of individual materials or mixtures. Natural or synthetic scents are core constituents of personal care and household products (PCHPs) that impart attractiveness to the olfactory perception and disguise the unpleasant [...] Read more.
Fragrance compounds (synthetic fragrances or natural essential oils) comprise formulations of specific combinations of individual materials or mixtures. Natural or synthetic scents are core constituents of personal care and household products (PCHPs) that impart attractiveness to the olfactory perception and disguise the unpleasant odor of the formula components of PCHPs. Fragrance chemicals have beneficial properties that allow their use in aromatherapy. However, because fragrances and formula constituents of PCHPs are volatile organic compounds (VOCs), vulnerable populations are exposed daily to variable indoor concentrations of these chemicals. Fragrance molecules may trigger various acute and chronic pathological conditions because of repetitive human exposure to indoor environments at home and workplaces. The negative impact of fragrance chemicals on human health includes cutaneous, respiratory, and systemic effects (e.g., headaches, asthma attacks, breathing difficulties, cardiovascular and neurological problems) and distress in workplaces. Pathologies related to synthetic perfumes are associated with allergic reactions (e.g., cutaneous and pulmonary hypersensitivity) and potentially with the perturbation of the endocrine-immune-neural axis. The present review aims to critically call attention to odorant VOCs, particularly synthetic fragrances and associated formula components of PCHPs, potentially impacting indoor air quality and negatively affecting human health. Full article
19 pages, 4502 KiB  
Article
Inhibition Kinetics and Theoretical Studies on Zanthoxylum chalybeum Engl. Dual Inhibitors of α-Glucosidase and α-Amylase
by Njogu M. Kimani, Charles O. Ochieng, Mike Don Ogutu, Kevin Otieno Yamo, Joab Otieno Onyango and Cleydson B. R. Santos
J. Xenobiot. 2023, 13(1), 102-120; https://doi.org/10.3390/jox13010009 - 21 Feb 2023
Cited by 1 | Viewed by 1878
Abstract
Compounds from Zanthoxylum chalybeum Engl. were previously reported for inhibitory activities of amylase and glucosidase enzymatic action on starch as a preliminary study toward the establishment of a management strategy against postprandial hyperglycemia, however, the inhibitory kinetics and molecular interaction of these compounds [...] Read more.
Compounds from Zanthoxylum chalybeum Engl. were previously reported for inhibitory activities of amylase and glucosidase enzymatic action on starch as a preliminary study toward the establishment of a management strategy against postprandial hyperglycemia, however, the inhibitory kinetics and molecular interaction of these compounds were never established. A study was thus designed to establish the inhibitory kinetics and in silico molecular interaction of α-glucosidase and α-amylase with Z. chalybeum metabolites based on Lineweaver–Burk/Dixon plot analyses and using Molecular Operating Environment (MOE) software, respectively. Skimmianine (5), Norchelerythrine (6), 6-Acetonyldihydrochelerythrine (7), and 6-Hydroxy-N-methyldecarine (8) alkaloids showed mixed inhibition against both α-glucosidase and α-amylase with comparable Ki to the reference acarbose (p > 0.05) on amylase but significantly higher activity than acarbose on α-glucosidase. One phenolic 2,3-Epoxy-6,7-methylenedioxyconiferol (10) showed a competitive mode of inhibition both on amylase and glucosidase which were comparable (p > 0.05) to the activity of acarbose. The other compounds analyzed and displayed varied modes of inhibition between noncompetitive and uncompetitive with moderate inhibition constants included chaylbemide A (1), chalybeate B (2) and chalybemide C (3), fagaramide (4), ailanthoidol (9), and sesame (11). The important residues of the proteins α-glucosidase and α-amylase were found to have exceptional binding affinities and significant interactions through molecular docking studies. The binding affinities were observed in the range of −9.4 to −13.8 and −8.0 to −12.6 relative to the acarbose affinities at −17.6 and −20.5 kcal/mol on α-amylase and α-glucosidase residue, respectively. H-bonding, π-H, and ionic interactions were noted on variable amino acid residues on both enzymes. The study thus provides the basic information validating the application of extracts of Z. chalybeum in the management of postprandial hyperglycemia. Additionally, the molecular binding mechanism discovered in this study could be useful for optimizing and designing new molecular analogs as pharmacological agents against diabetes. Full article
(This article belongs to the Section Natural Products/Herbal Medicines)
Show Figures

Figure 1

12 pages, 3777 KiB  
Article
Stability Study of Graphene Oxide-Bovine Serum Albumin Dispersions
by Javier Pérez-Piñeiro, Fernando Sánchez-Cea, Mariana P. Arce, Isabel Lado-Touriño, María Luisa Rojas-Cervantes, María Fuencisla Gilsanz, Darío Gallach-Pérez, Rodrigo Blasco, Niurka Barrios-Bermúdez and Arisbel Cerpa-Naranjo
J. Xenobiot. 2023, 13(1), 90-101; https://doi.org/10.3390/jox13010008 - 16 Feb 2023
Viewed by 1973
Abstract
In this work, a stability study of dispersions of graphene oxide and graphene oxide functionalized with polyethylene glycol (PEG) in the presence of bovine serum albumin is carried out. First, a structural characterization of these nanomaterials is performed by scanning electron microscopy, atomic [...] Read more.
In this work, a stability study of dispersions of graphene oxide and graphene oxide functionalized with polyethylene glycol (PEG) in the presence of bovine serum albumin is carried out. First, a structural characterization of these nanomaterials is performed by scanning electron microscopy, atomic force microscopy, and ultraviolet visible spectroscopy, comparing the starting nanomaterials with the nanomaterials in contact with the biological material, i.e., bovine fetal serum. The different experiments were performed at different concentrations of nanomaterial (0.125–0.5 mg/mL) and BSA (0.01–0.04 mg/mL), at different incubation times (5–360 min), with and without PEG, and at different temperatures (25–40 °C). The SEM results show that BSA is adsorbed on the surface of the graphene oxide nanomaterial. Using UV-Vis spectrophotometry, the characteristic absorption peaks of BSA are observed at 210 and 280 nm, corroborating that the protein has been adsorbed. When the time increases, the BSA protein can be detached from the nanomaterial due to a desorption process. The stability of the dispersions is reached at a pH between 7 and 9. The dispersions behave like a Newtonian fluid with viscosity values between 1.1 and 1.5 mPa·s at a temperature range of 25 to 40 °C. The viscosity values decrease as the temperature increases. Full article
(This article belongs to the Section Nanotoxicology and Nanopharmacology)
Show Figures

Figure 1

15 pages, 462 KiB  
Article
Phytotherapy and Drugs: Can Their Interactions Increase Side Effects in Cancer Patients?
by Sarah Allegra, Silvia De Francia, Francesca Turco, Ilenia Bertaggia, Francesco Chiara, Tiziana Armando, Silvana Storto and Maria Valentina Mussa
J. Xenobiot. 2023, 13(1), 75-89; https://doi.org/10.3390/jox13010007 - 01 Feb 2023
Cited by 4 | Viewed by 3207
Abstract
Background: The use of herbs to treat illnesses was common in all historical eras. Our aim was to describe the phytotherapeutic substances that cancer patients use most commonly, and to determine whether their use can increase side effects. Methods: This was a retrospective [...] Read more.
Background: The use of herbs to treat illnesses was common in all historical eras. Our aim was to describe the phytotherapeutic substances that cancer patients use most commonly, and to determine whether their use can increase side effects. Methods: This was a retrospective and descriptive study conducted among older adults actively undergoing chemotherapy, admitted at the Oncology DH Unit (COES) of the Molinette Hospital AOU Città della Salute e della Scienza in Turin (Italy). Data collection was conducted through the distribution of self-compiled and closed-ended questionnaires during chemotherapy treatment. Results: A total of 281 patients were enrolled. Evaluating retching and sage consumption was statistically significant in multivariate analysis. The only risk factor for dysgeusia was chamomile consumption. Ginger, pomegranate, and vinegar use were retained as mucositis predictors. Conclusions: Phytotherapeutic use needs more attention in order to decrease the risks of side effects, toxicity, and ineffective treatment. The conscious administration of these substances should be promoted for safe use and to provide the reported benefits. Full article
(This article belongs to the Section Natural Products/Herbal Medicines)
Show Figures

Figure 1

33 pages, 6178 KiB  
Article
Geospatiotemporal and Causal Inferential Study of European Epidemiological Patterns of Cannabis- and Substance-Related Congenital Orofacial Anomalies
by Albert Stuart Reece and Gary Kenneth Hulse
J. Xenobiot. 2023, 13(1), 42-74; https://doi.org/10.3390/jox13010006 - 01 Feb 2023
Cited by 5 | Viewed by 2019
Abstract
Introduction. Since high rates of congenital anomalies (CAs), including facial CAs (FCAs), causally attributed to antenatal and community cannabis use have been reported in several recent series, it was of interest to examine this subject in detail in Europe. Methods. CA data were [...] Read more.
Introduction. Since high rates of congenital anomalies (CAs), including facial CAs (FCAs), causally attributed to antenatal and community cannabis use have been reported in several recent series, it was of interest to examine this subject in detail in Europe. Methods. CA data were taken from the EUROCAT database. Drug exposure data were downloaded from the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA). Income was taken from the World Bank’s online sources. Results. On the bivariate maps of both orofacial clefts and holoprosencephaly against resin, the Δ9-tetrahydrocannabinol concentration rates of both covariates increased together in France, Bulgaria, and the Netherlands. In the bivariate analysis, the anomalies could be ranked by the minimum E-value (mEV) as congenital glaucoma > congenital cataract > choanal atresia > cleft lip ± cleft palate > holoprosencephaly > orofacial clefts > ear, face, and neck anomalies. When nations with increasing daily use were compared to those without, the former had generally higher rates of FCAs (p = 0.0281). In the inverse probability weighted panel regression, the sequence of anomalies—orofacial clefts, anotia, congenital cataract, and holoprosencephaly—had positive and significant cannabis coefficients of p = 2.65 × 10−5, 1.04 × 10−8, 5.88 × 10−16, and 3.21 × 10−13, respectively. In the geospatial regression, the same series of FCAs had positive and significant regression terms for cannabis of p = 8.86 × 10−9, 0.0011, 3.36 × 10−8, and 0.0015, respectively. Some 25/28 (89.3%) E-value estimates and 14/28 (50%) mEVs were >9 (considered to be in the high range), and 100% of both were >1.25 (understood to be in the causal range). Conclusion. Rising cannabis use is associated with all the FCAs and fulfils the epidemiological criteria for causality. The data indicate particular concerns relating to brain development and exponential genotoxic dose-responses, urging caution with regard to community cannabinoid penetration. Full article
(This article belongs to the Section Natural Products/Herbal Medicines)
Show Figures

Figure 1

13 pages, 1293 KiB  
Review
Safety and Efficacy of Tyrosine Kinase Inhibitors in Immune Thrombocytopenic Purpura: A Systematic Review of Clinical Trials
by Muhammad Ashar Ali, Muhammad Yasir Anwar, Wajeeha Aiman, Gurneel Dhanesar, Zainab Omar, Mohammad Hamza, Maha Zafar, Harish Kumar Rengarajan and Michael Maroules
J. Xenobiot. 2023, 13(1), 29-41; https://doi.org/10.3390/jox13010005 - 28 Jan 2023
Cited by 3 | Viewed by 2757
Abstract
Immune thrombocytopenic purpura (ITP) is an acquired antibody or cell-mediated platelet damage or decreased platelet production. Steroids, IV immunoglobulins (IVIG), and Rho-anti-D antibodies are the commonly used initial treatments for ITP. However, many ITP patients either do not respond or do not maintain [...] Read more.
Immune thrombocytopenic purpura (ITP) is an acquired antibody or cell-mediated platelet damage or decreased platelet production. Steroids, IV immunoglobulins (IVIG), and Rho-anti-D antibodies are the commonly used initial treatments for ITP. However, many ITP patients either do not respond or do not maintain a response to initial therapy. Splenectomy, rituximab, and thrombomimetics are the commonly used second-line treatment. More treatment options include tyrosine kinases inhibitors (TKI), including spleen tyrosine kinase (Syk) and Bruton’s tyrosine kinase (BTK) inhibitors. This review aims to assess the safety and efficacy of TKIs. Methods: Literature was searched on PubMed, Embase, WOS, and clinicaltrials.gov using keywords, “tyrosine kinase” and “idiopathic thrombocytopenic purpura”. PRISMA guidelines were followed. Results: In total, 4 clinical trials were included with 255 adult patients with relapsed/refractory ITP. In all, 101 (39.6%) patients were treated with fostamatinib, 60 (23%) patients with rilzabrutinib, and 34 (13%) with HMPL-523. Patients treated with fostamatinib achieved a stable response (SR) and overall response (OR) in 18/101 (17.8%) and 43/101 (42.5%) of the patients, respectively, while SR and OR were achieved in 1/49 (2%) and 7/49 (14%) of the patients, respectively, in the placebo group. Patients treated with HMPL-523 (300 mg dose expansion) achieved an SR and OR in 5/20 (25%) and 11/20 (55%) of the patients, respectively, while SR and OR were achieved in 1/11 (9%) of the patients treated with the placebo. Patients treated with rilzabrutinib achieved an SR in 17/60 (28%) patients. Dizziness (1%), hypertension (2%), diarrhea (1%), and neutropenia (1%) were serious adverse events in fostamatinib patients. Rilzabrutinib or HMPL-523 patients did not require a dose reduction due to drug-related adverse effects. Conclusions: Rilzabrutinib, fostamatinib, and HMPL-523 were safe and effective in the treatment of relapsed/refractory ITP. Full article
(This article belongs to the Section Drug Therapeutics)
Show Figures

Figure 1

2 pages, 253 KiB  
Editorial
Acknowledgment to the Reviewers of Journal of Xenobiotics in 2022
by Journal of Xenobiotics Editorial Office
J. Xenobiot. 2023, 13(1), 27-28; https://doi.org/10.3390/jox13010004 - 17 Jan 2023
Cited by 1 | Viewed by 1149
Abstract
High-quality academic publishing is built on rigorous peer review [...] Full article
11 pages, 1406 KiB  
Article
Assessment of the Antimalarial Treatment Failure in Ebonyi State, Southeast Nigeria
by Chinedu Ogbonnia Egwu, Chinyere Aloke, Jennifer Chukwu, Joshua Chidiebere Nwankwo, Chinemerem Irem, Kingsley E. Nwagu, Felix Nwite, Anthony Ogbonnaya Agwu, Esther Alum, Christian E. Offor and Nwogo Ajuka Obasi
J. Xenobiot. 2023, 13(1), 16-26; https://doi.org/10.3390/jox13010003 - 03 Jan 2023
Cited by 1 | Viewed by 2247
Abstract
The fight against malaria is a continuum as the epidemic is not abating. For proper deployment of tools in the fight against malaria, an assessment of the situation is necessary. This work assessed the level of antimalarial drug treatment failure in Ebonyi State, [...] Read more.
The fight against malaria is a continuum as the epidemic is not abating. For proper deployment of tools in the fight against malaria, an assessment of the situation is necessary. This work assessed the level of antimalarial drug treatment failure in Ebonyi State, Nigeria. Both survey and in vitro analyses were adopted. The survey was used to obtain qualitative information from both the malaria subjects and the pharmacies where antimalarial drugs are sourced. The results from the survey were complemented by an in vitro assay of the level of active pharmaceutical ingredients (APIs) in the commonly used artemisinin combination in Nigeria; artemether/lumefantrine. Results from the survey revealed that artemisinin combination therapies (ACTs) remain the mainstay in the treatment of malaria, even though other non-artemisinin drugs are still used. It also revealed that many patients still self-medicate, although, this may not be connected to the treatment failure seen among some malaria subjects. The in vitro assay showed that ACT contains the right quantity of APIs. Further surveillance is, therefore, necessary to understand the real cause of treatment failure among malaria subjects in Nigeria. Full article
(This article belongs to the Section Drug Therapeutics)
Show Figures

Figure 1

14 pages, 1568 KiB  
Article
Development of a Modified QuEChERS Method Coupled with LC-MS/MS for Determination of Spinetoram Residue in Soybean (Glycine max) and Cotton (Gossypium hirsutum)
by Arnab Goon, Chiranjit Kundu and Pritam Ganguly
J. Xenobiot. 2023, 13(1), 2-15; https://doi.org/10.3390/jox13010002 - 21 Dec 2022
Cited by 2 | Viewed by 2167
Abstract
An analytical method for the quantitative determination of the insecticide spinetoram in cotton and soybean was established and validated using liquid chromatography tandem mass spectrometry (LC-MS/MS). Spinetoram is the mixture of two spinosyns, 3′-O-ethyl-5,6-dihydro spinosyn J and 3′-O-ethyl spinosyn L. The method involves [...] Read more.
An analytical method for the quantitative determination of the insecticide spinetoram in cotton and soybean was established and validated using liquid chromatography tandem mass spectrometry (LC-MS/MS). Spinetoram is the mixture of two spinosyns, 3′-O-ethyl-5,6-dihydro spinosyn J and 3′-O-ethyl spinosyn L. The method involves extraction with ethyl acetate followed by dispersive solid phase extraction (dSPE) clean-up with primary secondary amine (PSA), C18 and graphitised carbon black (GCB). The final quantitation of spinetoram was done by using LC-MS/MS with positive electrospray ionization. The method was reproducible (Horwitz ratio (HorRat) < 0.5 at 25 ng g−1) and validated by the analysis of samples spiked at 25, 50 and 100 ng g−1 in soybean, cotton and soil. The recoveries of spinosyns were found to be more than 85% when spiked at different levels. The identities of spinosyns were confirmed by using the ion ratio. A field dissipation study was conducted in soybean and cotton to find out the environmental fate of spinetoram, and samples were analysed following the proposed analytical method. Both isomers were found to be dissipated quickly. The pre-harvest interval of spinetoram was calculated in different substrates. Full article
(This article belongs to the Section Ecotoxicology)
Show Figures

Figure 1

1 pages, 155 KiB  
Editorial
A River of Drugs
by Luigi Campanella
J. Xenobiot. 2023, 13(1), 1; https://doi.org/10.3390/jox13010001 - 21 Dec 2022
Viewed by 1099
Abstract
The risk from EC concerns the abuse, not use, of drugs and, consequently, the excessive disposal of their metabolites [...] Full article
Previous Issue
Next Issue
Back to TopTop