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A Versatile Platform for Recyclable Polyesters: Alternating Copolymerization of Aldehydes (or Their Derivatives) with Cyclic Anhydrides.

ConspectusThe rapid expansion of the global polymer industry has highlighted the urgent need for sustainable alternatives to traditional syn … rs derived from chloral and cyclic anhydrides make them promising alternatives to conventional poly(vinyl chloride).The broader implications of these studies extend beyond the synthesis of sustainable polyesters. By demonstrating the feasibility of utilizing renewable resources for polymer production, we contribute to the development of a circular economy, where …

Substrate-driven microbial specialization and cooperative dechlorination of chlorinated pollutants in estuarine ecosystems.

Organohalide-respiring bacteria (OHRB) are globally distributed, yet their ecological roles in marine environments remain poorly understood, with few isolates characterized from these systems. Here, we describe a stable anaerobic consortium from estuarine sediments that performs sustained dechlorination of 1,1,2-trichloroethane (1,1,2-TCA) to vinyl chloride (VC) at a rate of 126.3 ± 0.9 µM d-1. This activity was associated with the stable co-enrichment of two key populations, Dehalogenimonas and Desulfitobacterium, which increased to dominate the community at 49.7% and 32.5%, respectively. Met…

Identifying the known and unknown health hazard information for chemical disasters: a phased scoping review of the East Palestine, Ohio train derailment.

INTRODUCTION: In February 2023, people residing in the village of East Palestine (EP, Ohio, USA) and surrounding areas were exposed to toxic … l or neurological effects, and one may cause damage to reproductive organs or the developing fetus. Vinyl chloride had the most comprehensive data. After Phase 2 literature searches, we suggested the need for primary studies for 12 chemical outcome pairs and a systematic review for two pairs. SIGNIFICANCE: Our rapid literature scoping approach can provide knowl …

Anti-inflammatory effects of quinolinyl analog of resveratrol targeting TLR4 in MCAO/R ischemic stroke rat model.

BACKGROUND: Among adults, stroke is the main causes of mortality and permanent disability. Neuroinflammation is one of the main causes of stoke-mediated neuronal death. Our previous study revealed that (E)-5-(2-(Quinolin-4-yl) vinyl) benzene-1, 3-diol (RV01), a quinolinyl analog of resveratrol, inhibits microglia-induced neuroinflammation and safeguards neurons from inflammatory harm. The preventive role of RV01 in ischemic stroke and its underlying cellular mechanisms and molecular targets remain poorly understood. PURPOSE: To investigate whether RV01 alleviates ischemia-reperfusion (I/R) in

Insertion of Unsaturated C-C Bonds into the O-H Bond of an Iridium(III)-Hydroxo Complex: Formation of Phosphorescent Emitters with an Asymmetrical β-Diketonate Ligand.

A synthetic methodology to prepare iridium(III) emitters of the class [3b+3b+3b'] with two ortho-metalated 1-phenylisoquinolines and an asymmetrical β-diketonate has been discovered. The abstraction of the chloride ligands of the dimer [Ir(μ-Cl){κ2-C,N-(C6H4-isoqui)}2]2 (1, C6H5-isoqui = 1-phenylisoquinoline) with AgBF4 in acetone and the subsequent addition of water to the resulting solution affords the water solvate mononuclear complex [Ir{κ2-C,N-(C6H4-isoqui)}2(H2O)2]BF4 (2), which reacts with KOH to give the dihydroxo-bridged dimer [Ir(μ-OH){κ2-C,N-(C6H4-isoqui)}2]2 (3). Treatment of the l

Dioxin exposure and public health in Chapaevsk, Russia.

One of the largest environmental polluters in Chapaevsk (Samara Region, Russia) is the Middle Volga chemical plant. From 1967 to 1987, it produced hexachlorocyclohexane (lindane) and its derivatives. Currently, it produces crop protection chemicals (liquid chlorine acids, methyl chloroform, vinyl chloride, and some other chemicals). Dioxins were detected in air (0.116 pg/m3), in soil (8.9-298 ng/kg), in the town's drinking water (28.4-74.1 pg/liter), and in the cow's milk (the content of 2,3,7,8-TCDD was 17.32 pg TEQ/g fat). The mean content of dioxins in seven pooled samples of human milk (40…

Reductive Cross-Coupling of Unreactive Electrophiles.

Transition-metal-catalyzed reductive coupling of electrophiles has emerged as a powerful tool for the construction of molecules. While major achievements have been made in the field of cross-couplings between organic halides and pseudohalides, an increasing number of reports demonstrates reactions involving more readily available, low-cost, and stable, but unreactive electrophiles. This account summarizes the recent results in our laboratory focusing on this topic. These findings typically include deoxygenative C-C coupling of alcohols, reductive alkylation of alkenyl acetates, reductive C-Si

Translational research to develop a human PBPK models tool kit-volatile organic compounds (VOCs).

Toxicity and exposure evaluations remain the two of the key components of human health assessment. While improvement in exposure assessment … etrachloride (CCl(4)), dichloromethane (DCM), perchloroethylene (PCE), trichloroethylene (TCE), and vinyl chloride (VC). Limited comparisons of the generic and original model predictions to published kinetic data were conducted. A goodness of fit was determined by calculating the means of the sum of the squared differences (MSSDs) for simulation vs. experimental …

Major histocompatibility complex class II genes and systemic sclerosis.

1. In no ethnic group is the overall association between systemic sclerosis and the MHC strong enough for direct clinical use. MHC associati … means of relating chemically induced systemic sclerosis like disorders with the classical disease. Vinyl chloride disease provides an example. 4. Evidence is emerging of strong associations between certain genetic markers and autoantibody production; a similar story has emerged in systemic lupus erythematosus. We believe that, eventually, genetic tests will be …

Dynamically crosslinked polydimethylsiloxane-based polyurethanes with contact-killing antimicrobial properties as implantable alloplasts for urological reconstruction.

A large population of patients is reported to suffer from urinary bladder-associated irreversible physiological disorders, rationalizing a continuous surge for structural and functional substitutes of urinary tissues, including ureters, bladder-wall, and urethra. The current gold standard for bladder reconstruction, an autologous gastrointestinal graft, is proven not to be an ideal substitute in the clinic. While addressing this unmet clinical need, a unique platform of antimicrobial polydimethyl siloxane-modified polyurethanes (TPU/PDMS) is designed and developed for its potential application

Abnormalities of the ARF-p53 pathway in primary angiosarcomas of the liver.

The INK4a-ARF locus, located on chromosome 9p21, encodes 2 cell cycle-regulatory proteins, p16(INKa) and p14(ARF), acting through the Rb-CDK4 and p53 pathways. This study was done to investigate the contribution of the INK4a-ARF locus in tumorigenesis of angiosarcoma of the liver. Alterations of p14(ARF), p16(INKa), and p53 in primary liver angiosarcoma from 19 patients were analyzed by methylation-specific polymerase chain reaction (MSP), restriction enzyme-related polymerase chain reaction (RE-PCR), microsatellite analysis, and DNA sequencing. As a control group, 12 angiosarcomas from other

[Primary liver cell carcinoma, aetiology and clinical picture (author's transl)].

Geographic area, age and sex influence the epidemiology of hepatoma. Aetiological factors are aflatoxins, sex hormones, thorotrast, alpha 1-antitrypsin deficiency, immunosuppression, vinylchloride, parasites, cirrhosis of the liver, and the hepatitis-B virus. Early diagnosis of the tumour is possible using alpha 1-fetoprotein estimations and modern morphological methods, particularly scintiscanning. Tumour resection is therapeutically desirable, while selective chemotherapy remains palliative and liver transplantation failed to prolong survival.

A PCE groundwater plume discharging to a river: influence of the streambed and near-river zone on contaminant distributions.

An investigation of a tetrachloroethene (PCE) groundwater plume originating at a dry cleaning facility on a sand aquifer and discharging to … eambed consisted solely of PCE transformation products, primarily cis-1,2-dichloroethene (cDCE) and vinyl chloride (VC). High concentrations in the interstitial water of the streambed did not correspond to high groundwater-discharge zones, but instead occurred in low discharge zones and are likely sorbed or retarded remnants of past high-concentration plume disc …

Field assessment of carboxymethyl cellulose stabilized iron nanoparticles for in situ destruction of chlorinated solvents in source zones.

This study pilot-tested carboxymethyl cellulose (CMC) stabilized zero-valent iron (ZVI) nanoparticles (with a trace amount of Pd catalyst) f … W-2. During the 596 days of testing, the total concentrations of cis-DCE (dichloroethylene) and VC (vinyl chloride) decreased by 20% and 38% in MW-1 and MW-2, respectively. However, the combined fraction of cis-DCE and VC in the total chlorinated ethenes (PCE, TCE, cis-DCE and VC) increased from 73% to 98% and from 62% to 98%, respectively, which supports the no …

A New Paradigm in Pincer Iridium Chemistry: PCN Complexes for (De)Hydrogenation Catalysis and Beyond.

The discovery and development of organometallic catalysts is of paramount importance in modern organic synthesis, among which the ligand scaffolds play a crucial role in controlling the activity and selectivity. Over the past several decades, d8 transition-metal complexes of pincer ligands have been developed extensively thanks to their easy structural modification, versatile reactivities, and high stability. One paradigm is the bis(phosphine)-based pincer iridium complexes PCP-Ir, which are highly active for alkane dehydrogenation, partly due to their high thermostability. However, except for

NTP Toxicology and Carcinogenesis Studies of Propylene (CAS No. 115-07-1) in F344/N Rats and B6C3F1 Mice (Inhalation Studies).

Propylene is used as a starting material in the production of polypropylene plastics and various other chemicals, including acrylonitrile, isopropyl alcohol, propylene oxide, butyraldehyde, cumene, dodecane, nonene, and allyl chloride. The major derivatives are polypropylene (25%), acrylonitrile (15%), isopropyl alcohol (10%), and propylene oxide (10%). It is also a valuable feed-stock chemical for the production of gasoline. Other miscellaneous applications include use as a starting material for polymerization reactions to form vinyl chloride copolymers and low-molecular-weight homopolymers t…

Exposome and unhealthy aging: environmental drivers from air pollution to occupational exposures.

The aging population worldwide is facing a significant increase in age-related non-communicable diseases, including cardiovascular and brain pathologies. This comprehensive review paper delves into the impact of the exposome, which encompasses the totality of environmental exposures, on unhealthy aging. It explores how environmental factors contribute to the acceleration of aging processes, increase biological age, and facilitate the development and progression of a wide range of age-associated diseases. The impact of environmental factors on cognitive health and the development of chronic age

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… Asbestos, silica, diesel exhaust, uranium, arsenic, beryllium, cadmium, silica, vinyl chloride, nickel compounds, chromium compounds, coal products, mustard gas, and chloromethyl ethers are significant risk factors for lung cancer [ 281 – 291 ]. … Exposure to vinyl chloride increases the risk of liver cancer [ 292 – 295 ], while limited evidence suggests an increased risk with exposure to arsenic [ 296 ] and trichloroethylene [ 297 , 298 ]. …

Linking Air Pollution and Hematologic Malignancies: From Epidemiology to Molecular Mechanisms.

PURPOSE OF REVIEW: Outdoor air pollution (OAP) is a major global environmental health threat associated with respiratory disease and solid tumors, with growing evidence linking it to hematologic malignancies. This review summarizes the molecular mechanisms and epidemiologic evidence connecting OAP exposure to acute and chronic leukemias, lymphomas, myelodysplastic syndromes (MDS), clonal hematopoiesis of indeterminate potential (CHIP), and multiple myeloma (MM). RECENT FINDINGS: Pollutants implicated in hematologic carcinogenesis include particulate matter (PM), benzene, nitrogen dioxide (NO₂

Совпадение в полном тексте источника
… International Agency for Research on Cancer. 1,3-butadiene, ethylene oxide and vinyl halides (vinyl fluoride, vinyl chloride and vinyl bromide) [Internet]. … Available from: https://publications.iarc.who.int/Book-And-Report-Series/Iarc-Monographs-On-The-Identification-Of-Carcinogenic-Hazards-To-Humans/1-3-Butadiene-Ethylene-Oxide-And-Vinyl-Halides-Vinyl-Fluoride-Vinyl-Chloride-And-Vinyl-Bromide --2008. Accessed 2026 May 21. 47. …

Health Risks from Microplastics in Intravenous Infusions: Evidence from Italy, Spain, and Ecuador.

The rising incidence of microplastics (MPs) is a possible health risk to humans. The present study aims to analyze the presence of MPs in intravenous (IV) infusions and compare MP concentrations from multiple brands. The IV solutions of 29 medical devices (IV-MDs) from seven brands commercialized in Ecuador, Spain, and Italy have been selected under specific consideration to carry out the study. The detection of MPs has been quite obvious in almost all of the samples from brands in the mentioned countries. MP concentrations ranged from 9 to 20 MPs/L in glass containers to 166-299 MPs/L in plas