8,949 results match your criteria: "Institute of Toxicology[Affiliation]"

A critical review on the symbiotic effect of bacteria and microalgae on treatment of sewage with biofertilizer production.

J Environ Manage

January 2025

Laboratory of Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology (DEM), Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, 226 025, Uttar Pradesh, India. Electronic address:

Wastes like sewage, kitchen and industrial are the major sources of environmental pollution and health hazards. Sewage contains 99.9% water and 0.

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Background: Xenogeneic transplantation induces acute graft-versus-host disease (aGvHD) and subsequent vital organ damage. Herein, we aimed to examine hepatic damage associated with aGvHD using histopathology and gene expression profiles.

Methods: A xenografic GvHD model was established by engrafting human peripheral blood mononuclear cells (PBMCs) into immunodeficient NOD-scid IL2Rγnull (NSG) mice after busulfan conditioning.

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Mass spectrometry (MS) is the only instrumental analytical technology that utilizes unique properties of matter, that is, its mass () and electrical charge (). In the magnetic and/or electric fields of mass spectrometers, electrically charged native or chemically modified (millions) endogenous and (thousands) exogenous substances, the analytes, are separated according to their characteristic mass-to-charge ratio (/) values. Mass spectrometers coupled to gas chromatographs (GC) or liquid chromatographs (LC), the so-called hyphenated techniques, i.

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Mitochondrial Transplantation Ameliorates Pulmonary Fibrosis by Suppressing Myofibroblast Activation.

Int J Mol Sci

November 2024

Paean Biotechnology, Inc., 5 Samil-daero 8-gil, Jung-gu, Seoul 04552, Republic of Korea.

Idiopathic pulmonary fibrosis (IPF) is a pulmonary disease characterized by excessive extracellular matrix protein deposition in the lung interstitium, subsequently causing respiratory failure. IPF still has a high medical unmet requirement due to the lack of effective treatments to inhibit disease progression. The etiology of IPF remains unclear, but mitochondrial dysfunction is considered to be associated with IPF development.

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Forensic Aspects of Designer LSD Analogs Identification by GC-MS (EI) and UV Spectroscopy.

Molecules

December 2024

Department of Forensic Medicine, Wroclaw Medical University, 4 J. Mikulicza-Radeckiego Street, 50-345 Wroclaw, Poland.

Article Synopsis
  • LSD analogs are emerging psychoactive substances designed to mimic illegal drugs while bypassing regulations, presenting identification challenges due to their diverse isomeric forms.
  • Gas chromatography-mass spectrometry (GC-MS) and UV spectroscopy were utilized to analyze 13 different LSD analogs, revealing that specific solvents enhanced detection sensitivity, while methanol could produce misleading results.
  • The study successfully established a method for distinguishing between LSD analogs and their isomers through unique ion fragmentation patterns and intensities, aiding in accurate forensic analysis.
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Background/objectives: Although high-fat, low-carbohydrate diets are used for weight loss and type 2 diabetes management, their high-fat content may have negative effects. This study examines the effects of replacing cellulose with chitosan and part of the fat with fish oil in a high-fat, low-carbohydrate diet on lipid metabolism in rats.

Methods: The experiment involved 35 six-week-old male SD rats, divided into five groups: normal control diet (ND), high-fat diet (HF), high-fat, low-carbohydrate diet (LC), LC with 5% chitosan (LC-CH), and LC with 5% chitosan and 5% fish oil (LC-CHF).

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In the modern era, cardiologists managing patients and families with cardiomyopathies need to be familiar with every stage of the diagnostic pathway from clinical phenotyping to the prescription and interpretation of genetic tests. This clinical consensus statement from the ESC Council for Cardiovascular Genomics aims to promote the integration of genetic testing into routine cardiac care of patients with cardiomyopathies, as recommended in the 2023 ESC guidelines for cardiomyopathies. The document describes the types of genetic tests currently available and provides advice on their prescription and for counselling after the return of genetic findings, including the approach in patients and families with variants of unknown significance.

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Facile synthesis of size-tunable L-carnosine-capped silver nanoparticles and their role in metal ion sensing and catalytic degradation of -nitrophenol.

Beilstein J Nanotechnol

December 2024

Nanomaterial Toxicology Laboratory, Drug and Chemical Toxicology Group, Food, Drug and Chemical, Environment and Systems Toxicology (FEST) Divison, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India.

ʟ-Carnosine is a dipeptide with notable antioxidant, antiglycation, metal chelating, and neuroprotective properties. Despite its many biological roles, applying ʟ-carnosine as a capping agent in nanoparticle synthesis has remained underexplored. This study explores the potential of ʟ-carnosine in synthesizing tunable plasmonic silver nanoparticles (ʟ-car-AgNPs).

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A consortium of five distinct bacterial strains was evaluated for their ability to biodegrade multiple polyaromatic hydrocarbons (PAHs) in sewage sludge under microcosm studies. The presence of PAHs was determined from the sludge samples collected during pre- and post-monsoon seasons from three different wastewater treatment plants (WWTPs). Among the 16 PAHs found, the lowest concentration detected was 1.

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Toxicity assessment of wastewater treatment plant sludge using .

J Biosci

December 2024

Ecotoxicology Laboratory, Environmental Toxicology Group, FEST Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow 226001, India.

Globally, sewage sludge is produced in large quantities as a by-product in wastewater treatment plants (WWTPs), which have organic and inorganic contaminants. Due to its high caloric value, this sludge is used as manure in agricultural fields. For this, regular sludge monitoring is necessary to understand the potential risks and limit the release of toxic substances into the environment.

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Evaluation of the cardiotoxicity of Echinochrome A using human induced pluripotent stem cell-derived cardiac organoids.

Ecotoxicol Environ Saf

December 2024

Center for Bio-Signal Research, Division of Advanced Predictive Research, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea. Electronic address:

Echinochrome A (EchA), a marine-derived natural product, has shown promise in treating cardiovascular and inflammatory diseases due to its antioxidant and anti-inflammatory properties. However, its cardiac safety remains underexplored. In this study, we utilized human induced pluripotent stem cell-derived cardiac organoids (hCOs) to validate their ability to model the cardiac safety profile of EchA in a human-relevant system.

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Background: Patients with diabetes kidney disease (DKD) are at risk of developing frailty, leading to functional impairment and poor outcomes. Medications are potential modifiers of such risk. Ketoanalogues have been shown to delay dialysis initiation in DKD patients.

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Intratracheal instillation (ITI) is considered the most pragmatic approach for investigating the potential toxicities of various respiratory exposure materials. Various respiratory exposure materials, including nanomaterials, hazardous air pollutants, fine dust, and household biocides, have raised public health concerns because of limited toxicological information and increasing consumption. Hence, toxicity studies using ITI in laboratory animals are important to accurately assess the human risks associated with these respiratory-exposed materials.

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Revealing mercury species-specific transfer and toxicity mechanisms in placental trophoblasts.

Chemosphere

February 2025

Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany; Institute of Toxicology and Environmental Hygiene, School of Medicine and Health, Technical University Munich, Munich, Germany.

Environmental mercury (Hg) follows a biogeochemical cycle resulting in a variety of Hg species. Therefore, human exposure to the three Hg species inorganic Hg via crops and air, methyl Hg through fish consumption and ethyl Hg due to the use as antiseptic agent in medical applications is a rising concern. Especially pregnant women and their developing fetus present a vulnerable population.

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The impact of atmospheric ultrafine particulate matter on IgE-mediated type 1 hypersensitivity reaction.

J Hazard Mater

November 2024

Department of Health Sciences, The Graduate School of Dong-A University, Busan 49315, Republic of Korea; Department of Biomedical Sciences, College of Natural Science, Dong-A University, Busan 49315, Republic of Korea. Electronic address:

The effect of atmospheric ultrafine particulate matter (UPM) on respiratory allergic diseases has been investigated for decades; however, the precise molecular mechanisms underlying these effects remain poorly understood. In this study, we used a simulated UPM (sUPM) generated via the spark discharge method to refine black carbon, a core particle that closely mimics real-world UPM, including the size (i.e.

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Article Synopsis
  • - The paper discusses the increasing prevalence of LSD analogs, known as "designer psychedelics," in illegal drug markets, which has led to a rise in recreational use and detection by law enforcement.
  • - Researchers developed a highly sensitive UHPLC-QqQ-MS/MS method to detect LSD and its various analogs in biological samples, achieving limits of quantification as low as 0.5 pg/mL.
  • - A stability study highlighted that using NaF for sample collection can help stabilize LSD analogs, making this method useful for clinical and forensic applications to identify new designer drugs.
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MicroRNAs (miRNAs), a class of endogenous small RNAs with lengths of approximately 19-24 nucleotides, play important regulatory roles in cells. In recent years, miR-363 has emerged as a prominent member of the miR-92a family, participating in various biological functions, including cellular proliferation, cycle, migration, and apoptosis. In particular, miR-363 plays a critical role in acute kidney injury, renal fibrosis, and diabetic nephropathy and can serve as a biomarker for the diagnosis of renal cell carcinoma.

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Exercise alleviates hematopoietic stem cell injury following radiation via the carnosine/Slc15a2-p53 axis.

Cell Commun Signal

December 2024

State Key Laboratory of Trauma and Chemical Poisoning, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing, 400038, China.

Article Synopsis
  • Ionizing radiation (IR) can damage hematopoietic stem cells (HSCs), causing myelosuppression, but the protective effects of moderate exercise against this damage are still being studied.
  • This research shows that long-term moderate exercise helps protect HSCs from IR injury by generating carnosine in skeletal muscles, which supports HSC function and reduces bone marrow damage.
  • Carnosine, transported to HSCs via a specific mechanism, inhibits the activity of the p53 protein, leading to enhanced HSC survival and proliferation after IR exposure—suggesting that exercise or carnosine supplementation could be beneficial strategies against IR-related damage.
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PPARβ/δ agonist GW0742 mitigates acute liver damage induced by acetaminophen overdose in mice.

Toxicol Appl Pharmacol

January 2025

Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China. Electronic address:

Liver damage caused by acetaminophen (APAP) overdose remains a worldwide medical problem. New therapeutic medicines for APAP poisoning are needed as the efficacy of the only antidote, N-acetyl-cysteine (NAC), significantly decreases if administered after 8 h of APAP intake and massive APAP overdose remains to induce hepatotoxicity despite the timely administration of NAC. Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) possesses versatile roles including regulation of lipid homeostasis and anti-inflammation in the liver.

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Article Synopsis
  • Dye wastewater pollution, particularly from aniline blue, is a significant environmental issue due to its toxic properties and difficulty in treatment.
  • This study investigates the enzyme SDRz found in strain CT1, which effectively degrades aniline blue through specific enzymatic mechanisms and degradation pathways.
  • Functional tests showed that SDRz is essential for this degradation, with the enzyme demonstrating substantial activity and efficiency in breaking down aniline blue into less harmful metabolites.
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Tetrabromobisphenol A (TBBPA), a brominated flame retardant (BFR), has been implicated as the neurotoxic effects in mammalian. However, the exact mechanisms underlying TBBPA-induced neurotoxicity remain unclear. In the present study, Neuro-2a cells, a mouse neural crest-derived cell line, were used to examine the mechanism of TBBPA-induced neuronal cytotoxicity.

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Article Synopsis
  • - The study evaluates the reproductive safety of ISIS 838707, a specialized drug targeting mouse Apolipoprotein C-III (ApoC-III) mRNA, through analysis of fertility and developmental endpoints in male and female mice during critical life stages.
  • - It found that the treatment, given at various doses, significantly reduced cholesterol and triglyceride levels while effectively lowering ApoC-III mRNA without causing overt toxicity or negative effects on reproduction.
  • - The majority of the drug was concentrated in the liver, with minimal transfer to the placenta and none to developing fetuses, indicating that ISIS 838707 does not adversely affect reproductive or developmental functions in mice.
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Exposure of lung fibroblasts to PM and lead (Pb) induces fibrosis and apoptosis in alveolar epithelial cells via a paracrine effect.

Ecotoxicol Environ Saf

December 2024

Department of Internal Medicine, Kangwon National University Hospital, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea; Department of Integrated Particulate Matter Management, Kangwon National University, Chuncheon, Republic of Korea; KW-Bio Co. Ltd., Chuncheon, Republic of Korea. Electronic address:

Exposure to fine particulate matter (PM) and heavy metals (HMs) in the air is closely associated with the incidence and exacerbation of pulmonary fibrosis. Although the specific responses of alveolar epithelial cells (AECs) and lung fibroblasts to PM or HM exposure have been well defined, the cellular responses of lung fibroblasts to PM or HM exposure and the subsequent interactions with AECs remain poorly investigated. In this study, we demonstrated that human lung fibroblasts exposed to PM or lead (Pb) induced fibrotic changes and apoptosis in AECs.

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Levodopa (L-DOPA) treatment is a clinically effective strategy for improving motor function in patients with ischemic stroke. However, the mechanisms by which modulating the dopamine system relieves the pathology of the ischemic brain remain unclear. Emerging evidence from an experimental mouse model of ischemic stroke, established by middle cerebral artery occlusion (MCAO), suggested that L-DOPA has the potential to modulate the inflammatory and immune response that occurs during a stroke.

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