241,040 results match your criteria: "Toxicity Hydrocarbons"

Encapsulation of paclitaxel into date palm lipid droplets for enhanced brain cancer therapy.

Sci Rep

December 2024

Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria (AECS), P.O. Box 6091, Damascus, Syria.

Paclitaxel, a powerful anticancer drug, is limited by its poor water solubility and systemic toxicity, which hinder its effectiveness against aggressive brain tumors. This study aims to overcome these challenges by exploring novel intranasal delivery methods using lipid droplets (LDs) derived from date palm seeds (DPLDs) and mouse liver (MLLDs). The anticancer efficacy of PTX was evaluated using a comparative intranasal delivery approach.

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Prenatal exposure to polychlorinated biphenyls (PCBs) has a detrimental effect on early cognitive development. Based on these observations, some researchers suggested that prenatal exposure to PCB may be an environmental cause of autism spectrum disorder (ASD). To investigate the potential link between prenatal exposure to PCB, we analyzed the link between the level of prenatal PCB exposure and ASD risk evaluated at 18 months of age and behavioral problems at 5 years old based on longitudinal birth cohort data collected in urban areas in Japan based on the data from 115 mother-infant pairs.

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Source attribution, health risk analysis, and policy implications of PAHs and NPAHs in PM[Formula: see text] in Northern Mexico.

Sci Rep

December 2024

Centro de Investigación en Materiales Avanzados S.C. (CIMAV-Mty), Unidad Monterrey, Alianza Norte 202, Apodaca, N.L., C.P. 66628, Mexico.

This research investigates the concentrations, sources, and health risks of polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs (NPAHs) in particulate matter with an aerodynamic diameter of 10 μm or less (PM[Formula: see text]) from critical urban centers in northern Mexico: Metropolitan Monterrey Area (MMA), Chihuahua (CHI), and Ciudad Juárez (CDJ). Advanced gas chromatography-mass spectrometry (GC-MS and GC-NCI-MS) revealed significant PAHs concentrations, with levels in MMA reaching 108.89 ± 99.

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Triterpene esters from Uncaria rhynchophylla hooks as potent HIV-1 protease inhibitors and their molecular docking study.

Sci Rep

December 2024

Department of Pharmacognosy, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea.

Despite significant advancements with combination anti-retroviral agents, eradicating human immunodeficiency virus (HIV) remains a challenge due to adverse effects, adherence issues, and emerging viral resistance to existing therapies. This underscores the urgent need for safer, more effective drugs to combat resistant strains and advance acquired immunodeficiency syndrome (AIDS) therapeutics. Eight triterpene esters (1-8) were identified from Uncaria rhynchophylla hooks.

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Prolonged use of antiretroviral agents has been clearly associated with nephrotoxicity, suggesting deterioration of renal function in patients receiving Highly Active Antiretroviral Therapy (HAART). The present study was designed to investigate the therapeutic efficacy of resveratrol (RV) in the treatment toxins-induced renal impairment. Twenty-four adult male Wistar rats weighing 70-90 g were divided into four groups and subjected to the following treatments: Control A (distilled water), B (HAART), C (RV-2.

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Mycotoxins are toxins produced by various types of fungi, including , which can produce different types of mycotoxins, such as Deoxynivalenol (DON), Zearalenone, T-2 toxin, and Fumonisins (FUM). Mycotoxins have the potential to reduce the quality of crops and pose health risks to both humans and animals. This can result in reduced animal production and substantial economic consequences on a global scale.

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Ameliorative effects of Ganoderma lucidum (Reishi) on testicular tissue of rats exposed to bisphenol A.

Pol J Vet Sci

September 2024

Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Fırat University, 23119, Elazığ, Turkey.

Bisphenol A (BPA), an endocrine disrupting chemical, is an environmental toxicant widely used in the production of polycarbonate plastics, epoxy resins and paints. Ganoderma lucidum (GDL) is a plant with biological activities widely used in Chinese medicine. The present study aims to determine the effects of GDL against testicular dysfunction in rats exposed to BPA.

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The present study was designed to evaluate the protective efficacy of troxerutin against cypermethrin-induced behavioral defects, motor function abnormalities, and oxidative stress in mice. Twenty-four adult female albino mice were randomly divided into four equal groups. The first group served as control, the second group was treated with cypermethrin (20 mg/kg b.

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Endocrine disruptor chemicals exposure and female fertility declining: from pathophysiology to epigenetic risks.

Front Public Health

December 2024

PERITOX-Périnatalité et Risques Toxiques-UMR_I 01 UPJV/INERIS, Centre Universitaire de Recherche en Santé, CURS-UPJV, University of Picardie Jules Verne, CEDEX 1, Amiens, France.

Over the last decades, human infertility has become a major concern in public health, with severe societal and health consequences. Growing evidence shows that endocrine disruptors chemicals (EDCs) have been considered as risk factors of infertility. Their presence in our everyday life has become ubiquitous because of their universal use in food and beverage containers, personal care products, cosmetics, phytosanitary products.

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ameliorates doxorubicin-induced renal injury via inhibition of oxidative stress and inflammation in rats.

Turk J Med Sci

December 2024

Department of Pharmacology, the Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Medical University, Shijiazhuang, China.

Background/aim: Doxorubicin (Dox) is a potent anticancer medication. However, due to nephrotoxicity, its clinical application is restricted. (AM) is a plant used in traditional medicine to treat several conditions, including kidney disorders.

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Following a decline in the production and use of polychlorinated naphthalenes (PCNs) and the restrictions introduced by the Stockholm Convention, dietary intake represents the most significant pathway of human exposure to these dioxin-like contaminants. PCNs occur ubiquitously in foods, originating from the legacy of historical production that is now globally redistributed, as well as from ongoing industrial and domestic combustion sources which have a stronger influence on occurrence patterns in countries where they were not produced. Recent studies have benefited from a wider set of available PCN reference standards, enabling more accurate reporting of a diverse range of congeners.

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Background: Systemic chemotherapy constitutes an indispensable component of breast cancer (BC) management, where therapeutic drug combinations such as anthracyclines, platinum compounds, and taxanes form the cornerstone of standard treatment protocols. Although DNA repair genes are pivotal in cancer susceptibility, their specific roles in mediating acute or chronic toxicity outcomes induced by chemotherapy remain undetermined. Consequently, this study was planned  to elucidate the impact of polymorphisms in base excision repair (BER) genes, including XRCC1, XRCC2, XRCC3, APE1, and hOGG1, on treatment response and toxicity outcomes in BC patients undergoing paclitaxel and doxorubicin-based chemotherapy within an Indian population.

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Background And Objective: Hepatocellular carcinoma (HCC) is recognized as one of the major public health problems and deadly malignancies worldwide. Today, the use of compounds of natural origin in the treatment of cancer and other diseases has been of interest to researchers. Marine compounds such as algae have anti-cancer effects.

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Within the framework of multicenter clinical studies of the original anticancer drug "Arglabin" in the complex therapy of breast cancer (BC) in an increased dose on the basis of the Regional Oncological Dispensary, Karaganda, 80 patients BC were examined and treated: 40 patients in the control group and 40 in the study group. The index of grade I anemia was higher in patients of the control group: in (15.6±6.

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Small intestinal organoids are similar to actual small intestines in structure and function and can be used in various fields, such as nutrition, disease, and toxicity research. However, the basal-out type is difficult to homogenize because of the diversity of cell sizes and types, and the Matrigel-based culture conditions. Contrastingly, the apical-out form of small intestinal organoids is relatively uniform and easy to manipulate without Matrigel.

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Brentuximab vedotin (BV)-bendamustine (90 or 120 mg/m2 day 1 and 2) every 28 days is an effective treatment for relapsed/refractory Hodgkin lymphoma (R/R HL) but associated to high toxicity especially for elderly patients. We conducted in St Louis Hospital, Paris, between 2015 and 2021 a retrospective single-center analysis of 44 patients with R/R HL treated with one-day BV-bendamustine (120 mg/m2) every 21 days. Sixteen percent of patients were ≥ 60 years old (yo).

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BACKGROUND Toluene poisoning can occur as a result of occupational exposure in industries such as painting, as well as through misuse, leading to complications such as neurological symptoms due to the accumulation of the metabolic byproduct of hippuric acid and metabolic acidosis. However, the exact mechanisms remain unclear. Hippuric acid is not removed by dialysis, so urinary excretion plays a central role.

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Environmental consequences of petroleum mulch application are crucial in regions prone to wind erosion and desertification. This study aimed to assess the long-term effects of petroleum mulching on soil polycyclic aromatic hydrocarbon (PAH) concentrations and the associated human and ecological risk indices. These indices include incremental lifetime cancer risk (ILCR), hazard index (HI), toxic equivalent concentration (TEQ), toxic unit (TU), and risk quotient (RQ) in soil samples from Khuzestan province, Iran.

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Role of PCBP2 in regulating nanovesicles loaded with curcumin to mitigate neuroferroptosis in neural damage caused by heat stroke.

J Nanobiotechnology

December 2024

Key Laboratory of Special Environmental Medicine of Xinjiang, General Hospital of Xinjiang Military Command, No. 359, Youhao North Road, Urumqi, Xinjiang, China.

Objective: This study aims to elucidate the mechanisms by which nanovesicles (NVs) transport curcumin(CUR) across the blood-brain barrier to treat hypothalamic neural damage induced by heat stroke by regulating the expression of poly(c)-binding protein 2 (PCBP2).

Methods: Initially, NVs were prepared from macrophages using a continuous extrusion method. Subsequently, CUR was loaded into NVs using sonication, yielding engineered cell membrane Nanovesicles loaded with curcumin (NVs-CUR), which were characterized and subjected to in vitro and in vivo tracking analysis.

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On the effectiveness of the red alga Laurencia microcladia as a PAH biomonitor in coastal marine ecosystems.

Environ Sci Pollut Res Int

December 2024

Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy.

Anthropogenic pressures affect large stretches of Mediterranean coastal environments, determining alterations, including chemical pollution, able to impair ecosystem functioning and services. Among the pollutants of major concern for their toxicity and persistence, there are polycyclic aromatic hydrocarbons (PAHs), which can be effectively monitored through bioaccumulation approaches. However, the main biomonitor of PAHs in the Mediterranean Sea, Posidonia oceanica, is currently undergoing extensive regressions due to anthropogenic pressures, forcing the search for alternative biomonitors.

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Diethylstilbestrol (DES) is an estrogenic endocrine disrupting chemical (EDC) that was prescribed to millions of pregnant women worldwide, leading to increased rates of infertility in the exposed offspring. We have previously demonstrated that this reduced fertility persists for multiple generations in the mouse. However, how altered ovarian function contributes to this infertility is unknown.

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Combination of paclitaxel with rosiglitazone induces synergistic cytotoxic effects in ovarian cancer cells.

Sci Rep

December 2024

Department of Zoology, Biomedical Technology, Human Genetics, and WBC, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India.

Ovarian cancer is known to be a challenging disease to detect at an early stage and is a major cause of death among women. The current treatment for ovarian cancer typically involves a combination of surgery and the use of drugs such as platinum-based cytotoxic agents, anti-angiogenic drugs, etc. However, current treatment methods are not always effective in preventing the recurrence of ovarian cancer.

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Polycyclic aromatic compounds and petroleum hydrocarbons (PHs) are hazardous pollutants and seriously threaten the environment and human health. However, native microbial communities can adapt to these toxic pollutants, utilize these compounds as a carbon source, and eventually evolve to degrade these toxic contaminants. With this in mind, we isolated 26 bacterial strains from various environmental soil samples.

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Absence of a Causal Link between Elemental Carbon Exposure and Short-Term Respiratory Toxicity in Human-Derived Organoids and Cellular Models.

Environ Sci Technol

December 2024

Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.

Black carbon or elemental carbon (EC) in the atmosphere plays an ambiguous role in acute respiratory toxic effects. Here, we evaluate the contribution of EC to the short-term toxicity (including cytotoxicity and oxidative stress potency) of fine particulate matter (PM) on the human respiratory tract using in vitro airway organoids and cell lines. The toxic potency of EC per unit mass, including char and soot, is more than 2 orders of magnitude lower than that of polycyclic aromatic hydrocarbons (PAHs), which are coemitted from incomplete combustion.

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Drug resistance of cancers remains a major obstacle due to limited therapeutics. Lysosome targeting is an effective method for overcoming drug resistance in cancer cells. St-N (ent-13-hydroxy-15-kaurene-19-acid N-methylpiperazine ethyl ester) is a novel alkaline stevioside derivative with an amine group.

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