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Urinary volatile organic compound metabolites and COPD among US adults: mixture, interaction and mediation analysis
CONCLUSIONS: Our findings provide novel evidence suggesting that VOCs may have adverse associations with COPD in the general population, with N, N- Dimethylformamide and 1,3-Butadiene contributing most. These findings underscore the significance of understanding the potential health risks associated with VOC mixture and emphasize the need for targeted interventions to mitigate the adverse effects on COPD risk.PMID:38702703 | DOI:10.1186/s12940-024-01086-y (Source: Cancer Control)
Source: Cancer Control - May 3, 2024 Category: Cancer & Oncology Authors: Ying Wang Zhaowei Meng Sen Wei Xuebing Li Zheng Su Yong Jiang Heng Wu Hongli Pan Jing Wang Qinghua Zhou Youlin Qiao Yaguang Fan Source Type: research

Thiocarbonyl-Bridged N-Heterotriangulenes for Energy Efficient Triplet Photosensitization: A Theoretical Perspective
Chemphyschem. 2024 May 3:e202400371. doi: 10.1002/cphc.202400371. Online ahead of print.ABSTRACTRigid metal-free organic molecules are of high demand for various triplet harvesting applications. Inefficient intersystem crossing (ISC) due to large singlet-triplet gap ([[EQUATION]]) and small spin-orbit coupling (SOC) between lowest excited singlet and triplet in these molecules often limits their efficiency. We computationally investigate excited-state electronic structures, fluorescence and ISC rates in several thiiocarbonyl-bridged N-heterotriangulene ([[EQUATION]]S-HTG) with systematically increased S-content ([[EQUATION...
Source: Chemphyschem - May 3, 2024 Category: Chemistry Authors: Arun K Manna Source Type: research

Formulation of biogenic fluorescent pigmented PHB nanoparticles from Rhodanobacter sp. for drug delivery
Antonie Van Leeuwenhoek. 2024 May 3;117(1):75. doi: 10.1007/s10482-024-01973-x.ABSTRACTBiogenic nanoparticles (NPs) have emerged as promising therapeutic formulations in effective drug delivery. Despite of various positive attributes, these NPs are often conjugated with various cytotoxic organic fluorophores for bioimaging, thereby reducing its effectiveness as a potential carrier. Herein, we aim to formulate biogenic fluorescent pigmented polyhydroxybutyrate (PHB) NPs from Rhodanobacter sp. strain KT31 (OK001852) for drug delivery. The bacterial strain produced 0.5 g L-1 of polyhydroxyalkanoates (PHAs) from 2.04 g L-1 of ...
Source: Antonie van Leeuwenhoek - May 3, 2024 Category: Microbiology Authors: Ksheerabdhi Tanaya Swati Mohapatra Deviprasad Samantaray Source Type: research

Assessment of parent and alkyl -PAHs in surface sediments of Iranian mangroves on the northern coast of the Persian Gulf: Spatial accumulation distribution, influence factors, and ecotoxicological risks
Chemosphere. 2024 May 1:142176. doi: 10.1016/j.chemosphere.2024.142176. Online ahead of print.ABSTRACTSpatial patterns, potential origins, and ecotoxicological risk of alkylated (APAH) -and parent -(PPAH) polycyclic aromatic hydrocarbons (PAHs) were studied in mangrove surface sediments along the northern coasts of the Persian Gulf, Iran. The mean total concentrations (ngg-1dw) ∑32PAH, ∑PPAHs and ∑APAHs in sediments were 3482 (1689-61228), 2642 (1109-4849), and 840 (478-1273), respectively. The spatial variability was similar among these PAH groups, with the highest levels occurring in Nayband National Marine Park (N...
Source: Chemosphere - May 3, 2024 Category: Chemistry Authors: Ali Ranjbar Jafarabadi Alireza Riyahi Bakhtiari Hamid Moghimi Elena Gorokhova Source Type: research

Transformation of dissolved organic matter during groundwater arsenite removal using air cathode iron electrocoagulation
Chemosphere. 2024 May 1:142083. doi: 10.1016/j.chemosphere.2024.142083. Online ahead of print.ABSTRACTDissolve organic matters (DOM) usually showed negative effect on the removal of inorganic arsenic (As) in groundwater by electrochemical approaches, yet which parts of sub-component within DOM played the role was lack of evidence. Herein, we investigated the effects of land-source humic-like acid (HA) on groundwater As(III) removal using air cathode iron electrocoagulation, based on the parallel factor analysis of three-dimensional excitation-emission matrix and statistical methods. Our results showed that the land-source ...
Source: Chemosphere - May 3, 2024 Category: Chemistry Authors: Ying Yuan Jiabao Chen Hao Zhang Yue Wu Yu Xiao Wan Huang Yang Wang Jun Tang Fang Zhang Source Type: research

Phosphorus immobilization/release behavior of lanthanum-modified bentonite amended sediment under the dual effects of pH and dissolved organic carbon
Chemosphere. 2024 May 1:142221. doi: 10.1016/j.chemosphere.2024.142221. Online ahead of print.ABSTRACTLanthanum modified bentonite (LMB) is typical P-inactivating agent that has been applied in over 200 lakes. Dissolved organic carbon (DOC) and high pH restrict the phosphorus (P) immobilization performance of LMB. However, the P immobilization/release behaviors of LMB-amended sediment when suspended to overlying water with high pH and DOC have not yet been studied. In the present work, batch adsorption and long-term incubation experiments were performed to study the combined effects of pH and DOC on the P control by LMB. T...
Source: Chemosphere - May 3, 2024 Category: Chemistry Authors: Xiaodi Li Xiaomeng Zhou Junxia Yu Chunqiao Xiao Ruan Chi Source Type: research

Production and emission characterization of briquette for sustainable development: MSW transformation
Environ Sci Pollut Res Int. 2024 May 3. doi: 10.1007/s11356-024-33546-w. Online ahead of print.ABSTRACTGlobal community is increasingly alarmed by resource depletion and environmental pollution. In light of pressing environmental concerns and depletion of finite resources, the surge in fossil fuel usage has sparked twin crises: dwindling fossil fuel reserves and escalating environmental pollution. The current study introduces a novel approach to minimize waste by transforming it into briquettes suitable for large-scale production. Production of briquettes involves multiple stages, including collection, drying, crushing, sc...
Source: Environmental Science and Pollution Research International - May 3, 2024 Category: Environmental Health Authors: Sowndharya Ganesan Praveena Vedagiri Source Type: research

The origin of betaine in mouse oocytes and preimplantation embryos †
Biol Reprod. 2024 May 3:ioae053. doi: 10.1093/biolre/ioae053. Online ahead of print.ABSTRACTBetaine has important roles in preimplantation mouse embryos, including as an organic osmolyte that functions in cell volume regulation in the early preimplantation stages and as a donor to the methyl pool in blastocysts. The origin of betaine in oocytes and embryos was largely unknown. Here, we found that betaine was present from the earliest stage of growing oocytes. Neither growing oocytes nor early preantral follicles could take up betaine, but antral follicles were able to transport betaine and supply the enclosed oocyte. Betai...
Source: Reproductive Biology - May 3, 2024 Category: Reproduction Medicine Authors: Emily R McIntosh Taylor McClatchie Martin Lee Steven H Zeisel Andrea Jurisicova Jay M Baltz Source Type: research

Navigating through the coordination preferences of heavy alkaline earth metals: Laying the foundations for 223 Ra- and 131/135m Ba-based targeted alpha therapy and theranostics of cancer
J Inorg Biochem. 2024 Apr 23;256:112569. doi: 10.1016/j.jinorgbio.2024.112569. Online ahead of print.ABSTRACTThe clinical success of [223Ra]RaCl2 (Xofigo®) for the palliative treatment of bone metastases in patients with prostate cancer has highlighted the therapeutic potential of α-particle emission. Expanding the applicability of radium-223 in Targeted Alpha Therapy of non-osseous tumors is followed up with significant interest, as it holds the potential to unveil novel treatment options in the comprehensive management of cancer. Moreover, the use of barium radionuclides, like barium-131 and -135m, is still unfamiliar ...
Source: Journal of Inorganic Biochemistry - May 3, 2024 Category: Biochemistry Authors: Sara Franchi Andrea Madabeni Marianna Tosato Silvia Gentile Mattia Asti Laura Orian Valerio Di Marco Source Type: research

Controlling On-Surface Photoactivity: The Impact of π-Conjugation in Anhydride-Functionalized Molecules on a Semiconductor Surface
Angew Chem Int Ed Engl. 2024 May 3:e202405983. doi: 10.1002/anie.202405983. Online ahead of print.ABSTRACTOn-surface synthesis has become a prominent method for growing low-dimensional carbon-based nanomaterials on metal surfaces. However, the necessity of decoupling organic nanostructures from metal substrates to exploit their properties requires either transfer methods or new strategies to perform reactions directly on inert surfaces. The use of on-surface light-induced reactions directly on semiconductor/insulating surfaces represents an alternative approach to address these challenges. Here, exploring the photochemical...
Source: Angewandte Chemie - May 3, 2024 Category: Chemistry Authors: Federico Frezza Ana S ánchez-Grande Sofia Canola Anna Lamancov á Pingo Mutombo Qifan Chen Christian W äckerlin Karl-Heinz Ernst Matthias Muntwiler Nicola Zema Marco Di Giovannantonio Dana Nachtigallov á Pavel Jel ínek Source Type: research

ß-Phenethylamine Synthesis via Latent Dual Electrophilicity of N-Pyridinium Aziridines
Angew Chem Int Ed Engl. 2024 May 3:e202406335. doi: 10.1002/anie.202406335. Online ahead of print.ABSTRACTß-Phenethylamines are widely represented in biologically and pharmacologically active organic small molecules. Here, we introduce N-pyridinium aziridines as latent dual electrophiles for the synthesis of ß-phenethylamines. Bromide-promoted ring opening generates ß-halopyridinium amines. Selective Ni-catalyzed C-C cross-coupling between organozinc nucleophiles and the benzylic C-Br electrophile affords a diverse family of ß-functionalized phenethylaminopyridinium salts, and coupling is stereoconvergent in the presen...
Source: Angewandte Chemie - May 3, 2024 Category: Chemistry Authors: Samya Samanta Promita Biswas Braeden O'Bannon David C Powers Source Type: research

Switchable Dual Circularly Polarized Luminescence in Through-Space Conjugated Chiral Foldamers
Angew Chem Int Ed Engl. 2024 May 2:e202407605. doi: 10.1002/anie.202407605. Online ahead of print.ABSTRACTOrganic materials with switchable dual circularly polarized luminescence (CPL) are highly desired because they can not only directly radiate tunable circularly polarized light themselves but also induce CPL for guests by providing chiral environment in self-assembled structures or serving as the hosts for energy transfer systems. However, most organic molecules only exhibit single CPL and it remains challenging to develop organic molecules with dual CPL. Herein, novel through-space conjugated chiral foldamers are const...
Source: Angewandte Chemie - May 3, 2024 Category: Chemistry Authors: Pingchuan Shen Shaoshao Jiao Zeyan Zhuang Xiaobing Dong Shaoxin Song Jinshi Li Ben Zhong Tang Zujin Zhao Source Type: research

Organophotoelectrocatalytic C(sp 2 )-H alkylation of heteroarenes with unactivated C(sp 3 )-H compounds
Chem Commun (Camb). 2024 May 3. doi: 10.1039/d4cc01335b. Online ahead of print.ABSTRACTAn organophotoelectrocatalytic method for the C(sp2)-H alkylation of heteroarenes with unactivated C(sp3)-H compounds through dehydrogenation cross-coupling has been developed. The C(sp2)-H alkylation combines organic catalysis, photochemistry and electrochemistry, avoiding the need for external metal-reagents, HAT-reagents, and oxidants. This protocol exhibits good substrate tolerance and functional group compatibility, providing a straightforward and powerful pathway to access a variety of alkylated heteroarenes under green conditions....
Source: Chemical Communications - May 3, 2024 Category: Chemistry Authors: Qinhui Wan Xia-Die Wu Zhong-Wei Hou Yongmin Ma Lei Wang Source Type: research