789,026 results match your criteria Toxicity Mushroom – Gyromitra Toxin


Impact of operability and total metastatic ablation on outcomes after stereotactic ablative radiotherapy (SABR) for oligometastases.

Int J Radiat Oncol Biol Phys 2022 Jun 22. Epub 2022 Jun 22.

Department of Radiation Oncology, Peter MacCallum Cancer Centre, Victoria, Australia.

Purpose: Medical operability is prognostic for survival after SABR in primary malignancies. This study investigates the prognostic significance of medical operability and total versus subtotal ablation of all oligometastatic disease sites.

Material/methods: Consecutive patients with 1-5 sites of active extracranial oligometastases had medical operability status and presence of subtotal versus total metastatic ablation recorded prospectively on an institutional database. Read More

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Targeting inflamed and non-inflamed melanomas: biological background and clinical challenges.

Semin Cancer Biol 2022 Jun 22. Epub 2022 Jun 22.

University of Perugia, Department of Surgery and Medicine, Unit of Medical Oncology, Perugia, Italy. Electronic address:

Immune checkpoint inhibitors (ICIs) have demonstrated impressive antitumor activity in patients with advanced and early stage melanoma, thus improving long-term survival outcomes. However, most patients derive limited benefit from immunotherapy, due to the development of primary, adaptive, or acquired resistance mechanisms. Immunotherapy resistance is a complex phenomenon that depends on genetic and epigenetic mechanisms which, in turn, drive the interplay between cancer cells and the tumor microenvironment (TME). Read More

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The hormetic dose-risks of polymethylmethacrylate nanoplastics on chlorophyll a fluorescence transient, lipid composition and antioxidant system in Lactuca sativa.

Environ Pollut 2022 Jun 22:119651. Epub 2022 Jun 22.

Graduate School of Natural and Applied Sciences, Nanotechnology and Advanced Materials, Selcuk University, Selcuklu, 42130, Konya, Turkey. Electronic address:

Nanoplastic pollution has become an increasing problem due to over-consumption and degradation in ecosystems. A little is known about ecological toxicity and the potential risks of nanoplastics on plants. To better comprehend the hormetic effects of nanoplastics, the experimental design was conducted on the impacts of polymethyl methacrylate (PMMA) on water status, growth, gas exchange, chlorophyll a fluorescence transient, reactive oxygen species (ROS) content (both content and fluorescence visualization), lipid peroxidation and antioxidant capacity (comparatively between leaves and roots). Read More

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Global PBDE contamination in cetaceans. A critical review.

Environ Pollut 2022 Jun 22:119670. Epub 2022 Jun 22.

Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006, Madrid, Spain.

This review summarizes the most relevant information on PBDEs' occurrence and their impacts in cetaceans at global scale, with special attention on the species with the highest reported levels and therefore the most potentially impacted by the current and continuous release of these substances. This review also emphasizes the anthropogenic and environmental factors that could increase concentrations and associated risks for these species in the next future. High PBDE concentrations above the toxicity threshold and stationary trends have been related to continuous import of PBDE-containing products in cetaceans of Brazil and Australia, where PBDEs have never been produced. Read More

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Functional in vitro characterization of SLCO1B1 variants and simulation of the clinical pharmacokinetic impact of impaired OATP1B1 function.

Eur J Pharm Sci 2022 Jun 22:106246. Epub 2022 Jun 22.

Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5E, 00014, Helsinki, Finland. Electronic address:

Organic Anion Transporting Polypeptide 1B1 is important to the hepatic elimination and distribution of many drugs. If OATP1B1 function is decreased, it can increase plasma exposure of e.g. Read More

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Colistimethate sodium-chitosan hydrogel for treating Gram-negative bacterial wound infections.

Int J Biol Macromol 2022 Jun 22. Epub 2022 Jun 22.

Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682041, India. Electronic address:

The drug resistance is higher among Gram-negative bacteria and demands the usage of strong antibiotics which can in turn result in systemic toxicity. In the treatment of the chronic wounds harboring pathogenic Gram-negative bacteria, the demand for an antimicrobial product that can be topically administered has been on the rise. In an effort to address the above issue, we have developed Colistimethate sodium (a high-end antibiotic) loaded chitosan hydrogel and characterized. Read More

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Sappanwood-derived polyphenolic antidote of amyloidal toxins achieved detoxification via inhibition/reversion of amyloidal fibrillation.

Int J Biol Macromol 2022 Jun 22. Epub 2022 Jun 22.

Department of Bioproducts and Biosystems Engineering, University of Minnesota, St Paul, MN 55108, USA.

The formidable virulence of methicillin-resistant staphylococcus aureus (MRSA) have thrown great challenges to biomedicine, which mainly derives from their autocrine phenol-soluble modulins (PSMs) toxins, especially the most toxic member termed phenol-soluble modulins α3 (PSMα3). PSMα3 cytotoxicity is attributed to its amyloidal fibrillation and subsequent formation of cross-α sheet fibrils. Inspired by the multiple biological activity of Sappanwood, herein, we adopted brazilin, a natural polyphenolic compound originated from Caesalpinia sappan, as a potential antidote of PSMα3 toxins, and attempted to prove that the regulation of PSMα3 fibrillation was an effective alexipharmic way for MRSA infections. Read More

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Corneal toxicity associated with belantamab mafodotin is not restricted to the epithelium: neuropathy studied with confocal microscopy.

Am J Ophthalmol 2022 Jun 22. Epub 2022 Jun 22.

Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria.

Purpose: The purpose of this study was to investigate epithelial and neuronal changes in patients with refractory/relapsed multiple myeloma (RRMM) before/during belantamab mafodotin (belamaf) treatment using confocal microscopy.

Design: Retrospective case series.

Methods: RRMM patients underwent best corrected visual acuity (BCVA) testing and slit-lamp examination/photography, followed by corneal confocal microscopy (CCM) to evaluate the epithelium and subbasal nerve plexus (SNP) to measure corneal nerve fiber density (CNFD), -branch density (CNBD), and -fiber length (CNFL) before and during belamaf treatment. Read More

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Acute toxicity of broflanilide on neurosecretory system and locomotory behavior of zebrafish (Danio rerio).

Chemosphere 2022 Jun 22:135426. Epub 2022 Jun 22.

Plant Protection College, Shenyang Agricultural University, Shenyang, China. Electronic address:

Broflanilide, a novel meta-diamide insecticide, possesses moderate acute toxicity to zebrafish, with a 96-h median lethal concentration (96-LC) of 0.76 mg/L. However, its effect on fish behavior and the underlying mechanisms are still unclear. Read More

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In vitro activity of a panel of per- and polyfluoroalkyl substances (PFAS), fatty acids, and pharmaceuticals in peroxisome proliferator-activated receptor (PPAR) alpha, PPAR gamma, and estrogen receptor assays.

Toxicol Appl Pharmacol 2022 Jun 22:116136. Epub 2022 Jun 22.

U.S. Environmental Protection Agency/Office of Research & Development/Center for Public Health and Environmental Assessment/Public Health and Integrated Toxicology Division, Research Triangle Park, NC 27711, USA. Electronic address:

Data demonstrate numerous per- and polyfluoroalkyl substances (PFAS) activate peroxisome proliferator-activated receptor alpha (PPARα), however, additional work is needed to characterize PFAS activity on PPAR gamma (PPARγ) and other nuclear receptors. We utilized in vitro assays with either human or rat PPARα or PPARγ ligand binding domains to evaluate 16 PFAS (HFPO-DA, HFPO-DA-AS, NBP2, PFMOAA, PFHxA, PFOA, PFNA, PFDA, PFOS, PFBS, PFHxS, PFOSA, EtPFOSA, and 4:2, 6:2 and 8:2 FTOH), 3 endogenous fatty acids (oleic, linoleic, and octanoic), and 3 pharmaceuticals (WY14643, clofibrate, and the metabolite clofibric acid). We also tested chemicals for human estrogen receptor (hER) transcriptional activation. Read More

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Safety evaluation and bioassay-guided isolation of antimycobacterial compounds from Morella salicifolia root ethanolic extract.

J Ethnopharmacol 2022 Jun 22:115501. Epub 2022 Jun 22.

Department of Biological and Pre-clinical Studies, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania.

Ethnopharmacological Relevance: Although the available medicines can cure almost all tuberculosis drug-susceptible patients some problems including the emergence of multi-drug resistant and extensively drug-resistant strains press for the need of new anti-TB medicines. Morella salicifoliais a common plant that is widely used in traditional medicine for managing HIV and AIDS-related conditions including tuberculosis but no studies have been done to evaluate its safety and efficacy.

Aim Of The Study: This study was designed to investigate the antimycobacterial activity and safety of M. Read More

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Organic quantum dots: An ultrasmall nanoplatform for cancer theranostics.

J Control Release 2022 Jun 22. Epub 2022 Jun 22.

Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKMs NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, Maharashtra 400056, India. Electronic address:

Tumours are the second leading cause of death globally, generating alterations in biological interactions and, as a result, malfunctioning of crucial genetic traits. Technological advancements have made it possible to identify tumours at the cellular level, making transcriptional gene variations and other genetic variables more easily investigated. Standard chemotherapy is seen as a non-specific treatment that has the potential to destroy healthy cells while also causing systemic toxicity in individuals. Read More

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Exposure to BDE-47 causes female infertility risk and induces oxidative stress and lipotoxicity-mediated ovarian hormone secretion disruption in mice.

Sci Total Environ 2022 Jun 22:156885. Epub 2022 Jun 22.

Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, PR China. Electronic address:

2,2,4,4-Tetrabromodiphenyl ether (BDE-47) has received considerable attention because of its high level in biological samples and potential developmental toxicity. Whether BDE-47 ingestion affects ovarian hormone secretion and the detailed underlying mechanism have not been clearly elucidated. The present study aimed to evaluate the toxicity of BDE-47 on ovarian hormone secretion and explored the underlying mechanism. Read More

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Mercury contamination and potential health risks to Arctic seabirds and shorebirds.

Sci Total Environ 2022 Jun 22:156944. Epub 2022 Jun 22.

Department of Ecoscience, Aarhus University, 4000 Roskilde, Denmark; Greenland Institute of Natural Resources, 3900 Nuuk, Greenland.

Since the last Arctic Monitoring and Assessment Programme (AMAP) effort to review biological effects of mercury (Hg) on Arctic biota in 2011 and 2018, there has been a considerable number of new Arctic bird studies. This review article provides contemporary Hg exposure and potential health risk for 36 Arctic seabird and shorebird species, representing a larger portion of the Arctic than during previous AMAP assessments now also including parts of the Russian Arctic. To assess risk to birds, we used Hg toxicity benchmarks established for blood and converted to egg, liver, and feather tissues. Read More

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Molecular mechanism of ethylparaben on zebrafish embryo cardiotoxicity based on transcriptome analyses.

Sci Total Environ 2022 Jun 22:156785. Epub 2022 Jun 22.

Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China. Electronic address:

Ethylparaben (EP), one of the parabens, a ubiquitous food and cosmetic preservatives, has caused widespread concern due to its health risks. Recently, studies have found that parabens exposure during pregnancy is negatively correlated with fetal and early childhood development. However, studies about EP on embryo development are few. Read More

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Melatonin as an adjuvant treatment modality with doxorubicin.

Biochimie 2022 Jun 22. Epub 2022 Jun 22.

Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, I.R. Iran. Electronic address:

Combination chemotherapy seems to be a beneficial choice for some cancer patients particularly when the drugs target different processes of oncogenesis; patients treated with combination therapies sometimes have a better prognosis than those treated with single drug chemotherapy. However, research has shown that this is not always the case, and this approach may only increase toxicity without having a significant effect in augmenting the antitumor actions of the drugs. Doxorubicin (Dox) is one of the most common chemotherapy drugs used to treat many types of cancer, but it also has serious side effects, such as cardiotoxicity, skin necrosis, testicular toxicity, and nephrotoxicity. Read More

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Comparative Efficacy of Silibinin and Nano-Silibinin on Lead poisoning in Male Wistar Rats.

Toxicology 2022 Jun 22:153242. Epub 2022 Jun 22.

Department of Forensic Medicine and Clinical Toxicology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran; Modeling of Non-Communicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran; Behavioral Disorders and Substance Abuse Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address:

Lead (Pb) is an environmental neurotoxin that can lead to toxicity. It has shown that tissues can be exposed to oxidative stress in lead poisoning. Since silymarin is a natural agent with antioxidant effects, this study aimed to investigate the antioxidant and chelation effects of silibinin and nano-silibinin on the oxidative stress status in lead-poisoned rats. Read More

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pH-responsive Mannose-modified ferrocene Metal-Organic frameworks with rare earth for Tumor-targeted synchronous Chemo/Chemodynamic therapy.

Bioorg Med Chem 2022 Jun 14;69:116885. Epub 2022 Jun 14.

Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China. Electronic address:

The combination of chemodynamic therapy (CDT) and chemotherapy is a promising strategy to achieve enhanced anticancer effects. Metal-organic frameworks (MOFs), as multifunctional drug delivery vehicles, have received extensive attention in the biomedical field. Carbohydrate has excellent biocompatibility and targeting ability, which can be used as a targeting ligand due to a specific recognition with glycoprotein receptors that overexpress on cancer cell membranes. Read More

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Evaluation of crotamine based probes as intracellular targeted contrast agents for magnetic resonance imaging.

Bioorg Med Chem 2022 Jun 15;69:116863. Epub 2022 Jun 15.

High-Field MR Center, Max Planck Institute for Biological Cybernetics, Tübingen, Germany.

Crotamine is a lysine and cysteine rich 42 amino acids long bio-active polypeptide, isolated from the venom of a South American rattlesnake, that can also be used as cell penetrating peptide. A facile synthetic scheme for coupling cargo molecules like fluorophores (carboxyfluorescein) or MRI probes (Gd-DO3A-based macrocycle) is presented. The toxicity, cellular internalization and steady-state accumulation after long-term incubation for 18 h, as well as magnetic resonance relaxivities and cellular relaxation rates of crotamine based probes were evaluated and compared to its shorter synthetic fragment CyLoP-1. Read More

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Lycorine and organ protection: Review of its potential effects and molecular mechanisms.

Phytomedicine 2022 Jun 9;104:154266. Epub 2022 Jun 9.

Department of Cardiology, Xi'an No.3 Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China; Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education. Faculty of Life Sciences, Northwest University, Xi'an, China. Electronic address:

Background: Multiorgan dysfunction, especially sepsis-related multiorgan damage, remains a major cause of high mortality in the late stages of infection and a great clinical challenge. In recent years, natural drugs have received widespread attention because of their low cost, wide sources, high efficacy, low toxicity, and limited side effects. Lycorine, a natural compound extracted from Amaryllidaceae, exhibits multiple pharmacological activities, including in the regulation of autophagy and the induction of cancer cell apoptosis, and has anti-inflammatory, antifungal, antiviral, antimalarial, and antitumor activities. Read More

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Artemisia Leaf Extract protects against neuron toxicity by TRPML1 activation and promoting autophagy/mitophagy clearance in both in vitro and in vivo models of MPP+/MPTP-induced Parkinson's disease.

Phytomedicine 2022 Jun 15;104:154250. Epub 2022 Jun 15.

Cardiovascular and Mitochondrial Related Disease Research Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970, Taiwan. Electronic address:

Background: Parkinson's disease (PD) is a neurodegenerative disorder involving the degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc). Cellular clearance mechanisms, including the autophagy-lysosome pathway, are commonly affected in the pathogenesis of PD. The lysosomal Ca channel mucolipin TRP channel 1 (TRPML1) is one of the most important proteins involved in the regulation of autophagy. Read More

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Cadmium-induced splenic lymphocytes anoikis is not mitigated by activating Nrf2-mediated antioxidative defense response.

J Inorg Biochem 2022 Jun 2;234:111882. Epub 2022 Jun 2.

College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, PR China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, PR China. Electronic address:

Cadmium (Cd) is a widely used heavy metal which is reported to exert extensive harm to the environment and human health. Owing to Cd being an element it is continuously enriched in the environment. The mechanism of splenic toxicity by Cd, however, is not yet clear. Read More

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Aging relieves the promotion effects of polyamide microplastics on parental transfer and developmental toxicity of TDCIPP to zebrafish offspring.

J Hazard Mater 2022 Jun 18;437:129409. Epub 2022 Jun 18.

School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China. Electronic address:

Understanding the role of microplastics (MPs) in the biological fate and toxicity of organic pollutants in food webs is vital for its risk assessment. However, contradictory results and the neglect of MP aging as a factor have led to a research gap, which needs to be filled. Our study discovered that polyamide (PA, a ubiquitous MP in water) MPs clearly facilitated bioaccumulation of tris(1,3-dichloro-2-propyl) phosphate (TDCIPP) in the F0 zebrafish gonads and parental transfer of TDCIPP to the F1 offspring. Read More

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A facile synthesis of palladium nanoparticles decorated bismuth oxybromide nanostructures with exceptional photo-antimicrobial activities.

Colloids Surf B Biointerfaces 2022 Jun 14;217:112640. Epub 2022 Jun 14.

Department of Chemistry, D.S.B Campus, Kumaun University, Nainital 260002, Uttarakhand. Electronic address:

Assessing the interaction between microbes and nanocatalysts for finding an inclusive, proactive and deep understanding of nanoparticles-based toxicity is vital for discovering their broad range of applications. Palladium based photocatalysts owing to their unique fundamental characteristics and brilliant physicochemical potential have gained immense interest in environment remediation as disinfection system. In the present study, we report synthesis of a novel palladium nanoparticles decorated bismuth oxybromide (Pd/BiOBr) nanostructures using an energy efficient solution-based method, having excellent photocatalytic antibacterial action. Read More

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Weakly supervised deep learning for prediction of treatment effectiveness on ovarian cancer from histopathology images.

Comput Med Imaging Graph 2022 Jun 16;99:102093. Epub 2022 Jun 16.

Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan; Institute of Pathology and Parasitology, National Defense Medical Center, Taipei, Taiwan. Electronic address:

Despite the progress made during the last two decades in the surgery and chemotherapy of ovarian cancer, more than 70 % of advanced patients are with recurrent cancer and decease. Surgical debulking of tumors following chemotherapy is the conventional treatment for advanced carcinoma, but patients with such treatment remain at great risk for recurrence and developing drug resistance, and only about 30 % of the women affected will be cured. Bevacizumab is a humanized monoclonal antibody, which blocks VEGF signaling in cancer, inhibits angiogenesis and causes tumor shrinkage, and has been recently approved by FDA as a monotherapy for advanced ovarian cancer in combination with chemotherapy. Read More

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Polystyrene nanoplastics induce profound metabolic shift in human cells as revealed by integrated proteomic and metabolomic analysis.

Environ Int 2022 Jun 15;166:107349. Epub 2022 Jun 15.

School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China. Electronic address:

Nanoplastics (NPLs) are widespread in our environment. However, their impacts on human health and precise toxicity mechanisms remain poorly understood. Here we studied the internalization, release, and cytotoxicity of polystyrene nanoplastics (PSNPs) using the renal tubular epithelial cell line HKC and human derived liver cell line HL-7702. Read More

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Effects of chronic exposure of metals released from the dissolution of an aluminium galvanic anode on the Pacific oyster Crassostrea gigas.

Aquat Toxicol 2022 Jun 13;249:106223. Epub 2022 Jun 13.

Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie UNICAEN, Sorbonne Université, MNHN, UPMC Univ Paris 06, UA, CNRS 8067, IRD 207, Esplanade de la paix, Caen F-14032, France. Electronic address:

Among the anthropogenic sources releasing metallic species into the marine environment, the galvanic anode cathodic protection system (GACP) is widely used to protect submerged metallic structures from corrosion. Galvanic anodes are an alloy of metals of which the main component is aluminum or zinc. Very few studies were performed to study their potential biological effects. Read More

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A comparative proteomics study of Arabidopsis thaliana responding to the coexistence of BPA and TiO-NPs at environmentally relevant concentrations.

Ecotoxicol Environ Saf 2022 Jun 22;241:113800. Epub 2022 Jun 22.

Department of Chemistry and Biochemistry Department, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968, United States. Electronic address:

Through the applications of recycling sewage sludge to soils as nutrients, bisphenol A (BPA) and titanium dioxide nanoparticles (TiO-NPs) are commonly found in the agricultural environment. Previous studies have reported that BPA and nanoparticles are harmful to the environment. However, the combined toxicity of both compounds is not yet understood. Read More

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Multi-responsive mesoporous polydopamine composite nanorods cooperate with nano-enzyme and photosensitizer for intensive immunotherapy of bladder cancer.

Immunology 2022 Jun 25. Epub 2022 Jun 25.

Provincial Clinical Medical College of Fujian Medical University, Fuzhou, China.

Bladder cancer is a common malignancy in the urinary system. Defects of drug molecules in bladder during treatment, such as passive diffusion, rapid clearance of periodic urination, poor adhesion and permeation abilities, lead to low delivery efficiency of conventional drugs and high recurrence rate of disease. In this study, we designed multi-responsive mesoporous polydopamine (PDA) composite nanorods cooperating with nano-enzyme and photosensitizer for intensive immunotherapy of bladder cancer. Read More

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Utility of Silver-nanoparticles for Nano-fluorimetric Determination of Vancomycin Hydrochloride in Pharmaceutical Formulation and Biological Fluids: Greenness Assessment.

Authors:
Ahmed R Mohamed

J Fluoresc 2022 Jun 25. Epub 2022 Jun 25.

Analytical Chemistry Department, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, 11829, Egypt.

Vancomycin hydrochloride (VANH) is a glycopeptide antibiotic commonly employed in the prophylaxis and therapy of various gram-positive bacterial life-threatening infections. Due to the narrow therapeutic window of VANH, its serum levels should be well-monitored to avoid its toxicity and to optimize its therapy. Herein, an innovative silver-nanoparticles enhanced fluorescence technique was designed for VANH rapid analysis in its pharmaceutical formulation and biological fluids. Read More

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