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Life on the wall: the diversity and activity of microbes on 13th – century AD. Lan Na mural painting
This study aims to survey the microbiome and its potential for biodeterioration on unpreserved Lan Na mural paintings in Sean Khan temple, Chiang Mai, Thailand. The overview of the archaeal, bacterial, and fungal communities was reported by Illumina sequencing, whereas the potential for deterioration was revealed by culturable techniques and a literature search. The abundant microbes reported in this study were also found in other ancient mural paintings worldwide. Halococcus, a salt-tolerant archaeon, as well as the eubacterial genus Crossiella dominated the prokaryotic community. On the other hand, the main fungal group ...
Source: Frontiers in Microbiology - September 15, 2023 Category: Microbiology Source Type: research
Multicompartment calcium alginate microreactors to reduce substrate inhibition in enzyme cascade reactions
This article is licensed under aCreative Commons Attribution 3.0 Unported Licence.Yongkang Xi, Bradley D Frank, Apostolos Tatas, Marko Pavlovic, Lukas Zeininger The formation of macromolecularly enriched condensates through associative or segregative liquid-liquid phase separation phenomena is known to play a central role in controlling various cellular functions in nature. The potential... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Soft Matter latest articles - September 14, 2023 Category: Chemistry Authors: Yongkang Xi Source Type: research
Rapid degradation and detoxification of metronidazole using calcium sulfite activated by CoCu two-dimensional layered bimetallic hydroxides: Performance, mechanism, and degradation pathway
In this study, cobalt copper-layered double hydroxides (CoCu-LDHs) were prepared by coprecipitation as catalysts to activate CaSO3 for metronidazole (MNZ) degradation. This is the first report on layered double hydroxides activating sulfite for the degradation of organic pollutants. Meanwhile, to address the issue of self-quenching reactions readily occurring in conventional sulfite advanced oxidation systems and resulting in low oxidant efficiency, CaSO3 with slightly soluble in water was used instead of commonly used Na2SO3, to improve the limitations of traditional systems. The results showed that in the CoCu-LDHs/CaSO3...
Source: Chemosphere - September 14, 2023 Category: Chemistry Authors: Xiaoyan Lu Kai Wang Dedong Wu Pengfei Xiao Source Type: research
Enhanced properties of nickel-silver codoped hydroxyapatite for bone tissue engineering: Synthesis, characterization, and biocompatibility evaluation
Environ Res. 2023 Sep 12:117131. doi: 10.1016/j.envres.2023.117131. Online ahead of print.ABSTRACTHydroxyapatite (HAp) is the most well-known bioceramic and widely utilized in bone tissue regeneration. Hydroxyapatite is biocompatible and bioactive however, it lacks osteogenesis, angiogenesis, and antibacterial properties. In the current study, we synthesized and evaluated a novel nickel (Ni) and silver (Ag) codoped hydroxyapatite (HAp) in comparison to undoped HAp and individually doped HAp samples. Extensive physicochemical characterizations like XRD, TEM, FE-SEM/EDS, FTIR, Raman spectroscopy, and TGA were performed, conf...
Source: Environmental Research - September 14, 2023 Category: Environmental Health Authors: Ponnurengam Malliappan Sivakumar Abuzer Alp Yetisgin Sevilay Burcu Sahin Ebru Demir Sibel Cetinel Source Type: research
Rapid degradation and detoxification of metronidazole using calcium sulfite activated by CoCu two-dimensional layered bimetallic hydroxides: Performance, mechanism, and degradation pathway
In this study, cobalt copper-layered double hydroxides (CoCu-LDHs) were prepared by coprecipitation as catalysts to activate CaSO3 for metronidazole (MNZ) degradation. This is the first report on layered double hydroxides activating sulfite for the degradation of organic pollutants. Meanwhile, to address the issue of self-quenching reactions readily occurring in conventional sulfite advanced oxidation systems and resulting in low oxidant efficiency, CaSO3 with slightly soluble in water was used instead of commonly used Na2SO3, to improve the limitations of traditional systems. The results showed that in the CoCu-LDHs/CaSO3...
Source: Chemosphere - September 14, 2023 Category: Chemistry Authors: Xiaoyan Lu Kai Wang Dedong Wu Pengfei Xiao Source Type: research
Palladium-based multifunctional nanoparticles for combined chemodynamic/photothermal and calcium overload therapy of tumors
In this study, calcium carbonate-modified palladium hydride nanoparticles (PdH@CaCO3) were prepared and utilized for the combined treatment of tumors through chemodynamic therapy (CDT)/photothermal therapy (PTT) and calcium overload therapy. After entering tumor cells, PdH@CaCO3 releases calcium ions (Ca2+) and PdH once it reaches the TME due to the pH reactivity of the calcium carbonate coating. The mitochondrial membrane potential is lowered by the Ca2+, leading to irreversible cell damage. Meanwhile, PdH reacts with excessive hydrogen peroxide (H2O2) in the TME via the Fenton reaction, generating hydroxyl radicals (·OH...
Source: Colloids and Surfaces - September 14, 2023 Category: Biotechnology Authors: Wenge Zhang Jiangyong Li Lamei Chen Huan Chen Liangke Zhang Source Type: research
Enhanced properties of nickel-silver codoped hydroxyapatite for bone tissue engineering: Synthesis, characterization, and biocompatibility evaluation
Environ Res. 2023 Sep 12:117131. doi: 10.1016/j.envres.2023.117131. Online ahead of print.ABSTRACTHydroxyapatite (HAp) is the most well-known bioceramic and widely utilized in bone tissue regeneration. Hydroxyapatite is biocompatible and bioactive however, it lacks osteogenesis, angiogenesis, and antibacterial properties. In the current study, we synthesized and evaluated a novel nickel (Ni) and silver (Ag) codoped hydroxyapatite (HAp) in comparison to undoped HAp and individually doped HAp samples. Extensive physicochemical characterizations like XRD, TEM, FE-SEM/EDS, FTIR, Raman spectroscopy, and TGA were performed, conf...
Source: Cell Research - September 14, 2023 Category: Cytology Authors: Ponnurengam Malliappan Sivakumar Abuzer Alp Yetisgin Sevilay Burcu Sahin Ebru Demir Sibel Cetinel Source Type: research
3D interconnected porous PMMA scaffold integrating with advanced nanostructured CaP-based biomaterials for rapid bone repair and regeneration
J Mech Behav Biomed Mater. 2023 Sep 7;147:106106. doi: 10.1016/j.jmbbm.2023.106106. Online ahead of print.ABSTRACTBioactive scaffolds with polymer and nanostructured bioactive glass-based composites are promising materials for regenerative applications in consequence of close mimics of natural bone composition. Poly methyl methacrylate (PMMA) is a highly preferred thermoplastic polymer for orthopedic applications as it has good biocompatibility. Different kinds of bioactive, biodegradable as well as biocompatible biomaterial composites such as Bioglass (BG), Hydroxyapatite (Hap), and Tricalcium phosphate (TCP) can be integ...
Source: Journal of the Mechanical Behavior of Biomedical Materials - September 14, 2023 Category: Materials Science Authors: K Elakkiya P Bargavi S Balakumar Source Type: research
Carboxymethyl chitosan/polyvinyl alcohol double network hydrogels prepared by freeze-thawing and calcium chloride cross-linking for efficient dye adsorption
This study introduced a double network hydrogel, with varying carboxymethyl chitosan (CMCS) contents and polyvinyl alcohol (PVA), employing a combination of freeze- thawing and calcium chloride cross-linking. The investigation focused on the rheological properties of the hydrogels and their removal ability of acidic blue 93 (AB). The results showed that the strength and viscoelastic modulus of composite hydrogels were positively correlated with the CMCS content, and all composite hydrogels exhibited the typical weak strain overshoot behavior. The pore size of the gel initially decreased and then increased, with the densest...
Source: International Journal of Biological Macromolecules - September 14, 2023 Category: Biochemistry Authors: Kai-Yan Zhang Dong Li Yong Wang Li-Jun Wang Source Type: research
Protective effect of dietary micronutrients on gastric cancer risk among Jordanians
CONCLUSIONS: our data support favorable effects of dietary consumption of some vitamins and minerals against GC risk.PMID:37705441 | DOI:10.20960/nh.04547
Source: Nutricion Hospitalaria - September 14, 2023 Category: Nutrition Authors: Sabika Allehdan Shatha S Hammad Razan M Alatrash Tareq Al-Jaberi Ahmad Hushki Shirin Yacoub Mohammad Dahoud Tahra Elobeid Reema Tayyem Tayyem Source Type: research
Comparative effectiveness of therapeutic interventions in pregnancy and lactation-associated osteoporosis: a systematic review and meta-analysis
CONCLUSIONS: Due to high heterogeneity and lack of robust comparative data, no safe conclusions can be made regarding the optimal therapeutic intervention in women with PLO.PMID:37708365 | DOI:10.1210/clinem/dgad548
Source: The Journal of Clinical Endocrinology and Metabolism - September 14, 2023 Category: Endocrinology Authors: Panagiotis Anagnostis Kalliopi Lampropoulou-Adamidou Julia K Bosdou Georgios Trovas Petros Galanis Efstathios Chronopoulos Dimitrios G Goulis Symeon Tournis Source Type: research
Enhanced properties of nickel-silver codoped hydroxyapatite for bone tissue engineering: Synthesis, characterization, and biocompatibility evaluation
Environ Res. 2023 Sep 12:117131. doi: 10.1016/j.envres.2023.117131. Online ahead of print.ABSTRACTHydroxyapatite (HAp) is the most well-known bioceramic and widely utilized in bone tissue regeneration. Hydroxyapatite is biocompatible and bioactive however, it lacks osteogenesis, angiogenesis, and antibacterial properties. In the current study, we synthesized and evaluated a novel nickel (Ni) and silver (Ag) codoped hydroxyapatite (HAp) in comparison to undoped HAp and individually doped HAp samples. Extensive physicochemical characterizations like XRD, TEM, FE-SEM/EDS, FTIR, Raman spectroscopy, and TGA were performed, conf...
Source: Environmental Research - September 14, 2023 Category: Environmental Health Authors: Ponnurengam Malliappan Sivakumar Abuzer Alp Yetisgin Sevilay Burcu Sahin Ebru Demir Sibel Cetinel Source Type: research
Protective effect of dietary micronutrients on gastric cancer risk among Jordanians
CONCLUSIONS: our data support favorable effects of dietary consumption of some vitamins and minerals against GC risk.PMID:37705441 | DOI:10.20960/nh.04547
Source: Nutricion Hospitalaria - September 14, 2023 Category: Nutrition Authors: Sabika Allehdan Shatha S Hammad Razan M Alatrash Tareq Al-Jaberi Ahmad Hushki Shirin Yacoub Mohammad Dahoud Tahra Elobeid Reema Tayyem Tayyem Source Type: research
Carboxymethyl chitosan/polyvinyl alcohol double network hydrogels prepared by freeze-thawing and calcium chloride cross-linking for efficient dye adsorption
This study introduced a double network hydrogel, with varying carboxymethyl chitosan (CMCS) contents and polyvinyl alcohol (PVA), employing a combination of freeze- thawing and calcium chloride cross-linking. The investigation focused on the rheological properties of the hydrogels and their removal ability of acidic blue 93 (AB). The results showed that the strength and viscoelastic modulus of composite hydrogels were positively correlated with the CMCS content, and all composite hydrogels exhibited the typical weak strain overshoot behavior. The pore size of the gel initially decreased and then increased, with the densest...
Source: International Journal of Biological Macromolecules - September 14, 2023 Category: Biochemistry Authors: Kai-Yan Zhang Dong Li Yong Wang Li-Jun Wang Source Type: research
Rapid degradation and detoxification of metronidazole using calcium sulfite activated by CoCu two-dimensional layered bimetallic hydroxides: Performance, mechanism, and degradation pathway
In this study, cobalt copper-layered double hydroxides (CoCu-LDHs) were prepared by coprecipitation as catalysts to activate CaSO3 for metronidazole (MNZ) degradation. This is the first report on layered double hydroxides activating sulfite for the degradation of organic pollutants. Meanwhile, to address the issue of self-quenching reactions readily occurring in conventional sulfite advanced oxidation systems and resulting in low oxidant efficiency, CaSO3 with slightly soluble in water was used instead of commonly used Na2SO3, to improve the limitations of traditional systems. The results showed that in the CoCu-LDHs/CaSO3...
Source: Chemosphere - September 14, 2023 Category: Chemistry Authors: Xiaoyan Lu Kai Wang Dedong Wu Pengfei Xiao Source Type: research
