Microorganisms
December 2024
subsp. () is a Gram-negative bacterium responsible for citrus canker, a significant threat to citrus crops. ClpV is a critical protein in the type VI secretion system (T6SS) as an ATPase involved in bacterial motility, adhesion, and pathogenesis to the host for some pathogenic bacteria.
View Article and Find Full Text PDFL. is one of the invasive malignant weeds in soybean fields. Diphenyl ether herbicides are commonly used to control weeds in soybean fields currently, among which fomesafen is the most widely used.
View Article and Find Full Text PDFThe ability to track minute changes of a single amino acid residue in a cellular environment is causing a paradigm shift in the attempt to fully understand the responses of biomolecules that are highly sensitive to their environment. Detecting early protein dynamics in living cells is crucial to understanding their mechanisms, such as those of photosynthetic proteins. Here, we elucidate the light response of the microbial chloride pump HR from the marine bacterium , located in the membrane of living cells, using nanosecond time-resolved UV/vis and IR absorption spectroscopy over the time range from nanoseconds to seconds.
View Article and Find Full Text PDFTo enhance the stability of anthocyanins under conditions such as light, temperature, and pH, an apricot polysaccharide hydrogel for anthocyanins encapsulation was prepared in this study. Apricot polysaccharides with different DEs were prepared by an alkaline de-esterification method. A gel was prepared by mixing the apricot polysaccharides with CaCl to encapsulate the anthocyanins; the encapsulation efficiency reached 69.
View Article and Find Full Text PDFUnlabelled: The present study was conducted to optimize fermentation conditions for preparation of Glutinous Rice Wine (CRW). The dynamic changes of main substances in the liquor during fermentation process, aroma components, biologically active substances and antioxidant capacity in the CRW after 6 months of aging were tested. The results showed that under optimized conditions, the yield and alcohol content of wine was 44.
View Article and Find Full Text PDFDielectric barrier discharge (DBD) was a commonly used non-thermal plasma (CP) technology. This paper aimed to enhance the biological activity of apricot polysaccharides (AP) by using dielectric barrier discharge (DBD-CP) assisted HO-VC Fenton reaction for degradation. The degradation conditions were optimized through response surface methodology.
View Article and Find Full Text PDFThe effectiveness of poly (ADP-ribose) polymerase inhibitors (PARPi) in creating single-stranded DNA gaps and inducing sensitivity requires the FANCJ DNA helicase. Yet, how FANCJ relates to PARP1 inhibition or trapping, which contribute to PARPi toxicity, remains unclear. Here, we find PARPi effectiveness hinges on S-phase PARP1 activity, which is reduced in FANCJ deficient cells as G-quadruplexes sequester PARP1 and MSH2.
View Article and Find Full Text PDFSingle-stranded DNA gaps are postulated to be fundamental to the mechanism of anti-cancer drugs. Gaining insights into their induction could therefore be pivotal for advancing therapeutic strategies. For poly (ADP-ribose) polymerase inhibitors (PARPi) to be effective, the presence of FANCJ helicase is required.
View Article and Find Full Text PDFPost-operative cognitive dysfunction (POCD) is a common complication after surgery due to the usage of anesthetics, such as Sevoflurane, which severely impacts the life quality of patients. Currently, the pathogenesis of Sevoflurane-induced POCD has not been fully elucidated but is reportedly involved with oxidative stress (OS) injury and aggravated inflammation. Phoenixin-20 (PNX-20) is a PNX peptide consisting of 20 amino acids with promising inhibitory effects on OS and inflammation.
View Article and Find Full Text PDFAmaranthus retroflexus L. is one of the malignant weeds which can cause a reduction in the soybean yield. We found a population of A.
View Article and Find Full Text PDFThe ladder phenyl/vinyl polysilsesquioxane (PhVPOSS) was used to improve the flame-retardancy performances of ethylene-vinyl acetate copolymer (EVA)/aluminum hydroxide (ATH) composites due to the reactivity of its vinyl groups. FTIR, XPS, H NMR, and SEM-EDS data demonstrated the PhVPOSS grafting onto EVA molecular chains. The PhVPOSS improved the thermal stability of EVA/ATH composites, as shown by the thermogravimetric analysis (TGA).
View Article and Find Full Text PDFThe valorization of waste apricot flesh (WAF) can solve environmental and economic problems, and also meets the demand for natural pigments. Therefore, the aim of this paper was to recover carotenoids from WAF, to determine the type and content of carotenoids in the extracts and to explore the potential of the extracts for food industry applications. The extraction conditions were optimized.
View Article and Find Full Text PDFTo complete the investigation of the bacterial inhibitory activity of ginkgolic acid (GA), the quorum sensing activity of GA was investigated to assess the potential of ginkgo biloba exocarp for the production of quorum sensing inhibitor. The effect of GA (C15:1) on the growth and secondary metabolism of p. aeruginosa PAO1 were tested.
View Article and Find Full Text PDFBackground: Ulcerative colitis (UC) is a kind of inflammatory bowel disease which is needed to be predicted.
Objective: To analyze various animal models of UC conditions and summarizes the animal selection, model progression, and pathogenic mechanisms of UC animal models.
Methods: We surveyed the research papers published in PubMed, Google Scholar, Baidu Scholar, CNKI, SciFinder, and Web of Science in the past 5 years and discussed the experimental animals, modeling methods, and pathogenic mechanisms.
Defects in DNA double-strand break repair are thought to render BRCA1 or BRCA2 (BRCA) mutant tumors selectively sensitive to PARP inhibitors (PARPis). Challenging this framework, BRCA and PARP1 share functions in DNA synthesis on the lagging strand. Thus, BRCA deficiency or "BRCAness" could reflect an inherent lagging strand problem that is vulnerable to drugs such as PARPi that also target the lagging strand, a combination that generates a toxic accumulation of replication gaps.
View Article and Find Full Text PDFBackground Aims: At present, increasing reports have shown that latent transforming growth factor-β-binding protein 2 (LTBP2) was associated with the prognosis of many types of cancer. We performed rounded analysis to comprehensively analyze and evaluate the prognostic significance of LTBP2 for patients with malignant tumors.
Methods: We identified relevant studies by searching database including PubMed, Embase, Cochrane Library, and Web of Science.
Objectives: we used the Controlling Nutritional Status score (CONUT), Geriatric Nutritional Risk Index (GNRI), and Prognostic Nutritional Index (PNI) to explore three different nutritional scores in predicting postoperative complications after pancreaticoduodenectomy (PD). Methods: data were retrospectively reviewed from 113 patients who underwent PD to treat pancreatic cancer and periampullary neoplasms at the Second Affiliated Hospital of Soochow University between 2015 and 2020. Nutritional status was assessed by the CONUT, GNRI, and PNI scores, and patients were categorized as either at risk or not at risk for malnutrition by each score.
View Article and Find Full Text PDFBMC Plant Biol
November 2021
Background: Polygonatum kingianum Coll. et Hemsl. is an important plant in Traditional Chinese Medicine.
View Article and Find Full Text PDFNext-generation terahertz (THz) sources demand lightweight, low-cost, defect-tolerant, and robust components with synergistic, tunable capabilities. However, a paucity of materials systems simultaneously possessing these desirable attributes and functionalities has made device realization difficult. Here we report the observation of asymmetric spintronic-THz radiation in Two-Dimensional Hybrid Metal Halides (2D-HMH) interfaced with a ferromagnetic metal, produced by ultrafast spin current under femtosecond laser excitation.
View Article and Find Full Text PDFInhibitors of poly(ADP-ribose) (PAR) polymerase (PARPi) have entered the clinic for the treatment of homologous recombination (HR)-deficient cancers. Despite the success of this approach, preclinical and clinical research with PARPi has revealed multiple resistance mechanisms, highlighting the need for identification of novel functional biomarkers and combination treatment strategies. Functional genetic screens performed in cells and organoids that acquired resistance to PARPi by loss of 53BP1 identified loss of LIG3 as an enhancer of PARPi toxicity in BRCA1-deficient cells.
View Article and Find Full Text PDFMutations in BRCA1 or BRCA2 (BRCA) is synthetic lethal with poly(ADP-ribose) polymerase inhibitors (PARPi). Lethality is thought to derive from DNA double-stranded breaks (DSBs) necessitating BRCA function in homologous recombination (HR) and/or fork protection (FP). Here, we report instead that toxicity derives from replication gaps.
View Article and Find Full Text PDFIn this study, we selected 11 townships with severe ground subsidence located in Weishan County as the study area. Based on the interpretation data of Landsat images, the Binary logistic regression model was used to explore the relationship between land use and land cover (LULC) change and the related 7 driving factors at a resolution of 60 m. Using the CLUE-S model, combined with Markov model, the simulation of LULC under three scenarios-namely, natural development scenario, ecological protection scenario and farmland protection scenario-were explored.
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