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1.
Microbiome ; 12(1): 189, 2024 Oct 03.
Article in English | MEDLINE | ID: mdl-39363340

ABSTRACT

BACKGROUND: Cereal diseases caused by insect-transmitted viruses are challenging to forecast and control because of their intermittent outbreak patterns, which are usually attributed to increased population densities of vector insects due to cereal crop rotations and indiscriminate use of pesticides, and lack of resistance in commercial varieties. Root microbiomes are known to significantly affect plant health, but there are significant knowledge gaps concerning epidemics of cereal virus diseases at the microbiome-wide scale under a variety of environmental and biological factors. RESULTS: Here, we characterize the diversity and composition of rice (Oryza sativa) root-associated bacterial communities after infection by an insect-transmitted reovirus, rice black-streaked dwarf virus (RBSDV, genus Fijivirus, family Spinareoviridae), by sequencing the bacterial 16S rRNA gene amplified fragments from 1240 samples collected at a consecutive 3-year field experiment. The disease incidences gradually decreased from 2017 to 2019 in both Langfang (LF) and Kaifeng (KF). BRSDV infection significantly impacted the bacterial community in the rice rhizosphere, but this effect was highly susceptible to both the rice-intrinsic and external conditions. A greater correlation between the bacterial community in the rice rhizosphere and those in the root endosphere was found after virus infection, implying a potential relationship between the rice-intrinsic conditions and the rhizosphere bacterial community. The discrepant metabolites in rhizosphere soil were strongly and significantly correlated with the variation of rhizosphere bacterial communities. Glycerophosphates, amino acids, steroid esters, and triterpenoids were the metabolites most closely associated with the bacterial communities, and they mainly linked to the taxa of Proteobacteria, especially Rhodocyclaceae, Burkholderiaceae, and Xanthomonadales. In addition, the greenhouse pot experiments demonstrated that bulk soil microbiota significantly influenced the rhizosphere and endosphere communities and also regulated the RBSDV-mediated variation of rhizosphere bacterial communities. CONCLUSIONS: Overall, this study reveals unprecedented spatiotemporal dynamics in rhizosphere bacterial communities triggered by RBSDV infection with potential implications for disease intermittent outbreaks. The finding has promising implications for future studies exploring virus-mediated plant-microbiome interactions. Video Abstract.


Subject(s)
Bacteria , Microbiota , Oryza , Plant Diseases , RNA, Ribosomal, 16S , Reoviridae , Rhizosphere , Soil Microbiology , Oryza/microbiology , Oryza/virology , Reoviridae/genetics , Reoviridae/isolation & purification , Reoviridae/classification , Plant Diseases/microbiology , Plant Diseases/virology , Bacteria/classification , Bacteria/genetics , Bacteria/isolation & purification , Animals , RNA, Ribosomal, 16S/genetics , Plant Roots/microbiology , Plant Roots/virology , Insecta/virology , Insecta/microbiology , Plant Viruses
2.
Sci Total Environ ; 954: 176694, 2024 Oct 02.
Article in English | MEDLINE | ID: mdl-39366563

ABSTRACT

Nitrogen cycling is one of the most important biogeochemical processes on Earth, and denitrification, anammox and DNRA processes are important nitrogen cycling processes in estuarine ecosystems. However, due to the large input of anthropogenic nitrogen sources, a large number of environmental problems have now occurred in the estuary. But the global patterns and controlling factors of denitrification, anammox and DNRA rates in wetland marine ecosystems are not yet known. We reached our conclusions through a global synthesis of 546 observation sites from 78 peer-reviewed papers: The three rates were generally higher in areas near wetlands than in coastal areas. The rate of denitrification was highest in the subtropical region the seasonal variability was not significant; and TOC was the main factor controlling denitrification. The rate of anammox was significantly higher in the subtropical region than in the tropical and boreal zones, and the seasonal variability was significant; and at the same time, TN was the main driver of the anammox rate of the wetland ocean. DNRA rates were significantly higher in the tropics than in the subtropics and temperate zones; and the main driver of DNRA rates was temperature. Nitrogen cycle functional genes also had an indirect effect on their rates. With NH4 + -N significantly affecting nirK abundance and TN significantly affecting the gene abundance of nirS; TOC and TN had a greater effect on hzo abundance, which indirectly affected anammox rates; for DNRA, C/N significantly affects the gene abundance of nrfA, which indirectly affects the DNRA rate. Therefore, the findings of this study indicate that physicochemical indicators about N and climatic characteristics have a profound effect on the nitrogen cycling process, which provides a good feedback for studying the role of denitrification and provides a positive impact on global climate and environmental governance.

3.
Cancer Immunol Immunother ; 73(12): 245, 2024 Oct 03.
Article in English | MEDLINE | ID: mdl-39358493

ABSTRACT

Neoantigen vaccines represent an emerging and promising strategy in the field of tumor immunotherapy. Despite their potential, designing an effective neoantigen vaccine remains a challenge due to the current limitations in predicting CD4+ T cell epitopes with high accuracy. Here, we introduce a novel approach to neoantigen vaccine design that does not rely on computational prediction of CD4+ T cell epitopes. Utilizing nitrated helper T cell epitope containing p-nitrophenylalanine, termed "NitraTh epitope," we have successfully engineered a series of tumor neoantigen vaccines capable of eliciting robust neoantigen-specific immune responses. With the help of NitraTh epitope, even mutations with low predicted affinity for MHC class I molecules were successfully induced to elicit neoantigen-specific responses. In H22 cell allograft and patient-derived xenograft (PDX) liver cancer mouse models, the NitraTh epitope-based neoantigen vaccines significantly suppressed tumor progression. More strikingly, through single-cell sequencing we found that the NitraTh epitope-based neoantigen vaccines regulate macrophage reprogramming and modulate macrophages to decrease the levels of the immunosuppressive molecule prostaglandin E2 (PGE2), which in turn reshapes the tumor immunosuppressive microenvironment. In summary, NitraTh epitope-based neoantigen vaccines possess the dual effects of potently activating neoantigen-specific immunity and alleviating immunosuppression, potentially providing a new paradigm for the design of tumor neoantigen vaccines.


Subject(s)
Antigens, Neoplasm , Cancer Vaccines , Immunotherapy , Cancer Vaccines/immunology , Animals , Mice , Humans , Immunotherapy/methods , Antigens, Neoplasm/immunology , Epitopes, T-Lymphocyte/immunology , Tumor Microenvironment/immunology , Liver Neoplasms/immunology , Liver Neoplasms/therapy , Neoplasms/immunology , Neoplasms/therapy , Xenograft Model Antitumor Assays , Female
4.
Front Endocrinol (Lausanne) ; 15: 1396022, 2024.
Article in English | MEDLINE | ID: mdl-39290325

ABSTRACT

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder affecting people worldwide. It is characterized by several key features, including hyperinsulinemia, hyperglycemia, hyperlipidemia, and dysbiosis. Epidemiologic studies have shown that T2DM is closely associated with the development and progression of cancer. T2DM-related hyperinsulinemia, hyperglycemia, and hyperlipidemia contribute to cancer progression through complex signaling pathways. These factors increase drug resistance, apoptosis resistance, and the migration, invasion, and proliferation of cancer cells. Here, we will focus on the role of hyperinsulinemia, hyperglycemia, and hyperlipidemia associated with T2DM in cancer development. Additionally, we will elucidate the potential molecular mechanisms underlying their effects on cancer progression. We aim to identify potential therapeutic targets for T2DM-related malignancies and explore relevant directions for future investigation.


Subject(s)
Diabetes Mellitus, Type 2 , Disease Progression , Neoplasms , Humans , Neoplasms/pathology , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/metabolism , Animals , Hyperglycemia/complications , Hyperglycemia/metabolism , Hyperinsulinism/complications , Hyperinsulinism/metabolism , Hyperlipidemias/complications , Signal Transduction
5.
Curr Microbiol ; 81(11): 377, 2024 Sep 26.
Article in English | MEDLINE | ID: mdl-39325205

ABSTRACT

Due to the burgeoning global population and the advancement of economies, coupled with human activities leading to the degradation of soil ecosystems and the depletion of non-renewable resources, concerns have arisen regarding food security and human survival. In order to address these adverse impacts, the spotlight has been cast upon plant growth-promoting rhizobacteria (PGPR), driven by a strong environmental consciousness. PGPR possesses the capability to foster plant growth and amplify crop yield through both direct and indirect mechanisms. By expediting plant growth, augmenting nutrient assimilation, heightening crop yield and caliber, and fortifying stress resilience, the application of PGPR can mitigate reliance on chemical fertilizers and pesticides while diminishing ecological perils. This exposition delves into the function of PGPR in modulating plant hormones, fostering nutrient solubilization, and fortifying plant resistance against biotic and abiotic stressors. This review offers valuable insights into the intricate interplay between PGPR and plants, elucidating uncertainties ripe for further investigation. Profound comprehension and judicious utilization of PGPR are indispensable for attaining sustainable agricultural progression, making substantial contributions to resolving the conundrums of global food security and environmental conservation.


Subject(s)
Agriculture , Crops, Agricultural , Soil Microbiology , Crops, Agricultural/microbiology , Crops, Agricultural/growth & development , Agriculture/methods , Plant Development , Crop Production , Sustainable Development , Soil/chemistry
6.
J Hazard Mater ; 479: 135650, 2024 Nov 05.
Article in English | MEDLINE | ID: mdl-39216249

ABSTRACT

Emerging nanopesticides are gradually gaining widespread application in agriculture due to their excellent properties, but their potential risks to pollinating insects are not fully understood. In this study, lambda-cyhalothrin nanocapsules (LC-NCs) were constructed by electrostatic self-assembly method with iron mineralization optimization, and their effects on bee gut microbial communities and host immune-related factors were investigated. Microbiome sequencing revealed that LC-NCs increase the diversity of gut microbial communities and reduce the complexity of network features, disrupting the overall structure of the microbial communities. In addition, LC-NCs also had systemic effects on the immune response of bees, including increased activity of SOD and CAT enzymes and expression of their genes, as well as downregulation of Defensin1. Furthermore, we noticed that the immune system of the host was activated simultaneously with a rise in the abundance of beneficial bacteria in the gut. Our research emphasizes the importance of both the host and gut microbiota of holobiont in revealing the potential risks of LC-NCs to environmental indicators of honey bees, and provides references for exploring the interactions between host-microbiota systems under exogenous stress. At the same time, we hope that more research can focus on the potential impacts of nanopesticides on the ecological environment.


Subject(s)
Gastrointestinal Microbiome , Insecticides , Nanocapsules , Nitriles , Pyrethrins , Animals , Bees/drug effects , Bees/microbiology , Bees/immunology , Pyrethrins/toxicity , Gastrointestinal Microbiome/drug effects , Nitriles/toxicity , Insecticides/toxicity , Nanocapsules/toxicity , Superoxide Dismutase/metabolism , Catalase/metabolism
7.
Imeta ; 3(4): e210, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39135693

ABSTRACT

Within dynamic agroecosystems, microbes can act as key intermediaries, facilitating spatiotemporal communication among plants. Future research could categorize key plant genes involved in plant-microbe interactions into microbiome-shaping genes (Ms genes) and microbiome-responsive genes (Mr genes), potentially leading to the construction of spatiotemporal molecular networks with microbes as intermediaries.

8.
Immunology ; 2024 Aug 22.
Article in English | MEDLINE | ID: mdl-39174487

ABSTRACT

Personalized neoantigen therapy has shown long-term and stable efficacy in specific patient populations. However, not all patients have sufficient levels of neoantigens for treatment. Although somatic mutations are commonly found in tumours, a significant portion of these mutations do not trigger an immune response. Patients with low mutation burdens continue to exhibit unresponsiveness to this treatment. We propose a design paradigm for neoantigen vaccines by utilizing the highly immunogenic unnatural amino acid p-nitrophenylalanine (pNO2Phe) for sequence alteration of somatic mutations that failed to generate neoepitopes. This enhances the immunogenicity of the mutations and transforms it into a suitable candidate for immunotherapy. The nitrated altered epitope vaccines designed according to this paradigm is capable of activating circulating CD8+ T cells and inducing immune cross-reactivity against autologous mutated epitopes in different MHC backgrounds (H-2Kb, H-2Kd, and human HLA-A02:01), leading to the elimination of tumour cells carrying the mutation. After immunization with the altered epitopes, tumour growth was significantly inhibited. It is noteworthy that nitrated epitopes induce tumour-infiltrating macrophages to differentiate into the M1 phenotype, surprisingly enhancing the MHC II molecule presenting pathway of macrophages. Nitrated epitope-treated macrophages have the potential to cross-activate CD4+ and CD8+ T cells, which may explain why pNO2Phe can enhance the immunogenicity of epitopes. Meanwhile, the immunosuppressive microenvironment of the tumour is altered due to the activation of macrophages. The nitrated neoantigen vaccine strategy enables the design of vaccines targeting non-immunogenic tumour mutations, expanding the pool of potential peptides for personalized and shared novel antigen therapy. This approach provides treatment opportunities for patients previously ineligible for new antigen vaccine therapy.

9.
Int J Biol Macromol ; 278(Pt 1): 134120, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39074701

ABSTRACT

Imbalanced Sirtuin 1 (SIRT1) levels may lead to liver diseases through abnormal regulation of autophagy, but the roles of SIRT1-regulated autophagy in hepatocellular carcinoma are still controversial. In this study, we found that SIRT1 mRNA and protein levels were upregulated in hepatocellular carcinoma, and high SIRT1 expression hinted an advanced stage and a poor prognosis. The differentially expressed proteins were significantly elevated in autophagy, cellular response to stress, and immune signaling pathways. In a thioacetamide-induced hepatocellular carcinoma mouse model, we found that SIRT1 expression was highly increased with increased autophagy and excessive macrophage inflammatory response. Next, we established a Hepa 1-6 cells and macrophage co-culture system in vitro to model the alteration of tumor microenvironment, and found that the medium from CCl4-treated or SIRT1-overexpressing Hepa 1-6 cells triggered the polarization of macrophage M1, and the culture medium derived from M1 macrophage promoted Hepa 1-6 cells growth and intracellular oxidative stress. The progression of liver fibrosis in the CCl4-induced liver fibrosis mouse model showed that inhibition of SIRT1 alleviated inflammatory response and ameliorated liver fibrosis. These findings suggest that SIRT1-regulated autophagy and inflammation are oncogenic in hepatocarcinogenesis.


Subject(s)
Autophagy , Carcinoma, Hepatocellular , Inflammation , Liver Neoplasms , Sirtuin 1 , Sirtuin 1/metabolism , Sirtuin 1/genetics , Animals , Autophagy/drug effects , Mice , Liver Neoplasms/pathology , Liver Neoplasms/metabolism , Liver Neoplasms/genetics , Liver Neoplasms/chemically induced , Inflammation/pathology , Inflammation/metabolism , Carcinoma, Hepatocellular/pathology , Carcinoma, Hepatocellular/metabolism , Carcinoma, Hepatocellular/genetics , Carcinoma, Hepatocellular/chemically induced , Humans , Macrophages/metabolism , Cell Line, Tumor , Male , Carcinogenesis/drug effects , Oxidative Stress/drug effects , Liver Cirrhosis/chemically induced , Liver Cirrhosis/pathology , Liver Cirrhosis/metabolism , Gene Expression Regulation, Neoplastic/drug effects
10.
JAMA Netw Open ; 7(7): e2423229, 2024 Jul 01.
Article in English | MEDLINE | ID: mdl-39042407

ABSTRACT

Importance: Chronic pelvic pain (CPP) is the main sequela of pelvic inflammatory disease (PID), with no established treatment. ZY5301 tablets, an effective part preparation extracted from Ajuga decumbens Thunb. (jingucao), are being tested as a treatment for CPP caused by PID. Objective: To evaluate whether ZY5301 tablets are effective and safe for CPP treatment in women with PID. Design, Setting, and Participants: This placebo-controlled double-blind, dose-parallel, phase 2 randomized clinical trial was conducted in 9 hospitals in China. Female participants with CPP after PID were enrolled between October 16, 2020, and August 31, 2021. The data analysis was performed between December 2021 and March 2022. Interventions: Participants were randomized 1:1:1 to receive ZY5301 300 mg/d, ZY5301 600 mg/d, or placebo orally 3 times a day for 12 weeks. Main Outcomes and Measures: Visual analog scale (VAS) scores were the main measure used to evaluate the efficacy of ZY5301 in reducing CPP. The evaluation end points for VAS score included changes in mean weekly VAS score from baseline, area under the VAS score-time curve, pain remission (VAS score of 0 and 1) rate, and median time to pain remission. Safety was evaluated by the occurrence of treatment-emergent and treatment-related adverse events. Results: In total, 180 women were randomly assigned, and 177 were included in the efficacy analysis; thus, the full analysis set included 60 participants in the ZY5301 mg/d group (mean [SD] age, 37.4 [8.1] years), 58 in the ZY5301 600 mg/d group (mean [SD] age, 37.1 [7.9] years), and 59 in the placebo group (mean [SD] age, 38.9 [7.3] years). Participant characteristics at baseline were similar among the groups. After 12 weeks of treatment, the mean (SD) change in VAS score from the baseline was -2.1 (1.7) points, -3.5 (1.5) points, and -3.8 (1.7) points in the placebo, ZY5301 300 mg/d, and ZY5301 600 mg/d groups, respectively (P < .001). The pain remission rates at week 12 were 43.3% and 53.5% in the ZY5301 300 mg/d and ZY5301 600 mg/d groups, respectively, a significant difference compared with the placebo group (11.9%; P < .001). All the other end points showed similar improvements. The ZY5301 600 mg/d group had better efficacy than the ZY5301 300 mg/d group, but the difference was not significant. The safety analysis revealed no significant differences among groups. Conclusions and Relevance: These findings show that ZY5301 tablet is efficacious for the relief of CPP with acceptable tolerability. Trial Registration: ClinicalTrials.gov Identifier: NCT05460546.


Subject(s)
Pelvic Inflammatory Disease , Pelvic Pain , Humans , Female , Pelvic Pain/drug therapy , Pelvic Pain/etiology , Adult , Pelvic Inflammatory Disease/drug therapy , Double-Blind Method , Tablets , Chronic Pain/drug therapy , Chronic Pain/etiology , Middle Aged , Treatment Outcome , Drugs, Chinese Herbal/therapeutic use , Drugs, Chinese Herbal/administration & dosage , Pain Measurement , China
11.
Int Med Case Rep J ; 17: 647-650, 2024.
Article in English | MEDLINE | ID: mdl-38974881

ABSTRACT

Neurosyphilis is a central nervous system infection caused by Treponema pallidum that imitates various neurological and mental disorders. Therefore, patients with this disease are prone to misdiagnoses. Here, we report a case of neurosyphilis with a psychotic disorder as the main manifestation. A young girl exhibited mental and behavioural abnormalities after a heartbreak, which manifested as alternating low mood, emotional irritability, and a lack of interest in social relations, followed by memory loss. The cerebrospinal fluid protein - Treponema pallidum particle agglutination test was positive, the toluidine red unheated serum test titre was 1:4, the white blood cell count was 5 × 10^6/L, the cerebrospinal fluid protein level was 0.97 g/L, and the brain CT was abnormal. After admission, the possibility of neurosyphilis was considered and the patient received intravenous penicillin G treatment. The patient's clinical symptom ms improved. This case emphasises that doctors should maintain clinical suspicion of Treponema pallidum infection in adolescent patients with mental abnormalities.

12.
Cell Signal ; 121: 111258, 2024 Sep.
Article in English | MEDLINE | ID: mdl-38866351

ABSTRACT

Adenosine deaminases acting on RNA 1(ADAR1), an RNA editing enzyme that converts adenosine to inosine by deamination in double-stranded RNAs, plays an important role in occurrence and progression of various types of cancer. Ferroptosis has emerged as a hot topic of cancer research in recent years. We have previously reported that ADAR1 promotes breast cancer progression by regulating miR-335-5p and METTL3. However, whether ADAR1 has effects on ferroptosis in breast cancer cells is largely unknown. In this study, we knocked down ADAR1 using CRISPR-Cas9 technology or over-expressed ADAR1 protein using plasmid expressing ADAR1 in MCF-7 and MDA-MB-231 breast cancer cell lines, then detected cell viability, and levels of ROS, MDA, GSH, Fe2+, GPX4 protein and miR-335-5p. We showed that the cell proliferation was inhibited, levels of ROS, MDA, Fe2+, and miR-335-5p were increased, while GSH and GPX4 levels were decreased after loss of ADAR1, compared to the control group. The opposite effects were observed after ADAR1 overexpression in the cells. Further, we demonstrated that ADAR1-controlled miR-335-5p targeted Sp1 transcription factor of GPX4, a known ferroptosis molecular marker, leading to inhibition of ferroptosis by ADAR1 in breast cancer cells. Moreover, RNA editing activity of ADAR1 is not essential for inducing ferroptosis. Collectively, loss of ADAR1 induces ferroptosis in breast cancer cells by regulating miR-335-5p/Sp1/GPX4 pathway. The findings may provide insights into the mechanism by which ADAR1 promotes breast cancer progression via inhibiting ferroptosis.


Subject(s)
Adenosine Deaminase , Breast Neoplasms , Ferroptosis , RNA-Binding Proteins , Ferroptosis/genetics , Humans , Adenosine Deaminase/metabolism , Adenosine Deaminase/genetics , Breast Neoplasms/pathology , Breast Neoplasms/metabolism , Breast Neoplasms/genetics , Female , RNA-Binding Proteins/metabolism , RNA-Binding Proteins/genetics , Cell Line, Tumor , Cell Proliferation , MCF-7 Cells , Reactive Oxygen Species/metabolism , MicroRNAs/metabolism , MicroRNAs/genetics , Phospholipid Hydroperoxide Glutathione Peroxidase/metabolism , Phospholipid Hydroperoxide Glutathione Peroxidase/genetics , Gene Expression Regulation, Neoplastic
13.
Nucl Med Commun ; 45(9): 779-787, 2024 Sep 01.
Article in English | MEDLINE | ID: mdl-38832411

ABSTRACT

BACKGROUND: It remains unclear whether the time interval between total thyroidectomy and radioactive iodine (RAI) therapy influences clinical outcomes in papillary thyroid carcinoma (PTC). This study aims to evaluate the impact of the timing to initiate RAI therapy on the response in PTC patients. METHODS: We retrospectively included 405 patients who underwent total thyroidectomy and subsequent RAI therapy at two tertiary hospitals in southwest China. Patients were categorized into two groups based on the interval between thyroidectomy and initial RAI therapy, that is, an early group (interval ≤90 days, n  = 317) and a delayed group (interval >90 days, n  = 88). Responses to RAI therapy were classified as excellent, indeterminate, biochemical incomplete, or structural incomplete. Univariate and multivariate analyses were conducted to identify factors associated with a nonexcellent response. RESULTS: Excellent responses were observed in 77.3% of the early group and 83.0% of the delayed group ( P  = 0.252). No significant impact of RAI therapy timing was also observed across all American Thyroid Association risk classification categories. These findings persisted when patients were analyzed separately according to RAI dose (intermediate-dose group: 3.7 GBq [ n  = 332]; high-activity group: ≥5.5 GBq [ n  = 73]), further subdivided by the timing of RAI therapy. Multivariate analysis identified lymph node dissection, RAI dose, and stimulated thyroglobulin as independent risk factors for excellent response ( P  < 0.05). CONCLUSION: The timing of initial RAI therapy following surgery did not significantly affect outcomes in patients with PTC.


Subject(s)
Iodine Radioisotopes , Thyroid Cancer, Papillary , Thyroid Neoplasms , Humans , Iodine Radioisotopes/therapeutic use , Retrospective Studies , Male , Female , Thyroid Neoplasms/radiotherapy , Thyroid Neoplasms/surgery , Thyroid Neoplasms/pathology , Middle Aged , Thyroid Cancer, Papillary/radiotherapy , Thyroid Cancer, Papillary/surgery , Adult , Treatment Outcome , Time Factors , Thyroidectomy , Aged , Carcinoma, Papillary/radiotherapy , Carcinoma, Papillary/pathology , Young Adult , Adolescent
14.
Adv Sci (Weinh) ; 11(30): e2402768, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38874399

ABSTRACT

Efficient neutrophil migration to infection sites plays a vital role in the body's defense against bacterial infections and natural immune responses. Neutrophils have a short lifespan and cannot be mass-cultured in vitro. Therefore, developing more stable artificial neutrophils (AN) in a controllable manner has become a research focus. However, existing AN lack chemotaxis, which is the ability to migrate toward high-signal-concentration positions in a dynamic blood- flow environment. Supplying AN with chemotaxis is key to designing AN that are more similar to natural neutrophils in terms of morphology and function. In this study, micrometer-sized, spherical, biocompatible AN are developed. These AN consist of zeolitic imidazolate framework-8 nanoparticles encapsulating two enzymes, coacervate droplet frameworks, and outer phospholipid bilayers carrying enzymes. The AN exhibit responsiveness to elevated hydrogen peroxide levels at inflammation sites, actively chemotaxing toward these sites along concentration gradients. They also demonstrate effective combat against Staphylococcus aureus infections. The capabilities of the AN are further validated through in vitro experiments and in vivo evaluations using vascular graft infection models. This study replicates natural neutrophils in terms of chemical composition, functionality, and physiological impact. It introduces new ideas for advancing the development of advanced artificial cells.


Subject(s)
Neutrophils , Staphylococcal Infections , Neutrophils/metabolism , Animals , Staphylococcal Infections/immunology , Blood Vessel Prosthesis/adverse effects , Staphylococcus aureus , Mice , Disease Models, Animal , Prosthesis-Related Infections , Nanoparticles/chemistry , Chemotaxis/drug effects , Humans
15.
Appl Opt ; 63(12): 3079-3091, 2024 Apr 20.
Article in English | MEDLINE | ID: mdl-38856451

ABSTRACT

In most existing studies based on fringe projector profilometry (FPP), the whole scenario is reconstructed, or the ideal experimental settings are established to segment the object easily. However, in real industrial scenarios, automated object detection and segmentation are essential to perform object-level measurement. To address the problem, a dual-wavelet feature interaction network (DWFI-Net) is developed in this paper to perform object phase-valid region segmentation, where both the background and shadow are removed. In our work, the modulation and wrapped phase maps are considered as inputs innovatively. The modulation maps provide abundant structures and textures, while the wrapped phase maps complement and enhance shadows and edges. An adaptive wavelet feature interaction (AWFI) module is presented to learn and fuse the features, where discrete wavelet transformation (DWT) is applied to decompose the features. An edge-aware discrete cosine transformation (EDCT) module is developed as a decoder, where the discrete cosine transformation (DCT) is applied to interpret the fused features. Qualitative and quantitative experiments are performed to verify the superiority of our DWFI-Net and its effectiveness on object-level three-dimensional measurement based on FPP.

16.
Article in Chinese | MEDLINE | ID: mdl-38686472

ABSTRACT

Objective:To retrospectively analyze the effectiveness of transcranial facial nerve bridging in the treatment of facial nerve dysfunction. Methods:A retrospective analysis was conducted on 27 patients with facial nerve dysfunction who underwent transcranial facial nerve bridging at the Eye, Ear, Nose, and Throat Hospital affiliated with Fudan University from 2017 to 2022. The main collected data includes the patient's age, gender, primary lesion, damaged location, interval from facial paralysis to surgery, and preoperative and postoperative House-Brackmann(HB) scale for facial nerve function. Statistical comparisons were made between the average HB level of patients before and after surgery. Results:A total of 27 patients included 17 males and 10 females. The average age of patients during surgery is(42.50±3.38) years old. Primary lateral skull base diseases include trauma(n=3), tumors(n=22), and infections(n=2). The duration of facial paralysis varies from 6 months to 5 years. Statistics analysis has found that the average postoperative HB score of patients who underwent transcranial facial nerve bridging was significantly lower at(3.750 ± 0.183) compared to preoperative(4.875±0.168). The proportion of patients with good facial nerve function increased significantly from 7.4% before surgery to 42.9% after surgery. Conclusion:Transcranial facial nerve bridging surgery with interpositional graft has a significant effect on improving facial nerve function in patients with facial nerve injury. Further research is still needed to evaluate the long-term effectiveness of this surgery, to determine the optimal patient selection criteria and postoperative rehabilitation strategies.


Subject(s)
Facial Nerve Injuries , Facial Nerve , Humans , Male , Female , Adult , Retrospective Studies , Facial Nerve Injuries/surgery , Facial Nerve/surgery , Facial Paralysis/surgery , Treatment Outcome , Middle Aged
17.
J Fungi (Basel) ; 10(4)2024 Apr 22.
Article in English | MEDLINE | ID: mdl-38667971

ABSTRACT

Species of the genus Thelephora (Thelephorales, Thelephoraceae) are ectomycorrhizal symbionts of coniferous and broad-leaved plants, and some of them are well-known edible mushrooms, making it an exceptionally important group ecologically and economically. However, the diversity of the species from China has not been fully elucidated. In this study, we conducted a phylogenetic analysis based on the internal transcribed spacer (ITS) regions, using Maximum Likelihood and Bayesian analyses, along with morphological observations of this genus. Four new species from China are proposed, viz., T. dactyliophora, T. lacunosa, T. petaloides, and T. pinnatifida. In addition, T. sikkimensis originally described from India is reported for the first time from China. Thelephora dactyliophora, T. pinnatifida, and T. sikkimensis are distributed in subtropical forests and mainly associated with plants of the families Fagaceae and Pinaceae. Thelephora lacunosa and T. petaloides are distributed in tropical to subtropical forests. Thelephora lacunosa is mainly associated with plants of the families Fagaceae and Pinaceae, while T. petaloides is mainly associated with plants of the family Fagaceae. Line drawings of microstructures, color pictures of fresh basidiomes, and detailed descriptions of these five species are provided.

18.
Sci Total Environ ; 930: 172738, 2024 Jun 20.
Article in English | MEDLINE | ID: mdl-38670362

ABSTRACT

Pesticide usage is a common practice to increase crop yields. Nevertheless, the existence of pesticide residues in the surrounding environment presents a significant hazard to pollinators, specifically the potential undisclosed dangers related to emerging nanopesticides. This study examines the impact of abamectin nanocapsules (AbaNCs), created through electrostatic self-assembly, as an insecticide on honey bees. It was determined that AbaNCs upregulated detoxification genes, including CYP450, as well as antioxidant and immune genes in honey bees. Furthermore, AbaNCs affected the activity of crucial enzymes such as superoxide dismutase (SOD). Although no apparent damage was observed in bee gut tissue, AbaNCs significantly decreased digestive enzyme activity. Microbiome sequencing revealed that AbaNCs disrupted gut microbiome, resulting in a reduction of beneficial bacteria such as Bifidobacterium and Lactobacillus. Additionally, these changes in the gut microbiome were associated with decreased activity of digestive enzymes, including lipase. This study enhances our understanding of the impact of nanopesticides on pollinating insects. Through the revelation of the consequences arising from the utilization of abamectin nanocapsules, we have identified potential stress factors faced by these pollinators, enabling the implementation of improved protective measures.


Subject(s)
Gastrointestinal Microbiome , Insecticides , Ivermectin , Nanocapsules , Animals , Ivermectin/analogs & derivatives , Ivermectin/toxicity , Gastrointestinal Microbiome/drug effects , Bees/physiology , Bees/drug effects , Insecticides/toxicity
19.
Toxicol Res (Camb) ; 13(2): tfae035, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38482041

ABSTRACT

The traditional Chinese herb hawthorn is gaining attention for its potential to lower lipid levels due to its active components that positively influence lipid metabolism. Our meta-analysis of fourteen randomized controlled trials compared traditional Chinese medicine containing hawthorn with conventional lipid-lowering drugs for hyperlipidemia. Hawthorn-based medicine showed promise in reducing total cholesterol and triglycerides while increasing high-density lipoprotein cholesterol levels, albeit less effective than standard drugs in lowering low-density lipoprotein cholesterol. However, caution is needed due to methodological limitations in some trials, emphasizing the importance of further well-designed studies to clarify hawthorn's efficacy in managing hyperlipidemia.

20.
Chemosphere ; 357: 141808, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38548086

ABSTRACT

Owing to the huge amounts and perishable character of vegetable wastes, composting is one of the best options for recycling vegetable wastes post-harvest. The initial moisture content (MC) is critical for optimizing composting process, but the effect of high MC in undehydrated vegetable wastes on composting was rarely reported. For this, the plant-scale windrows were prepared by mixing cauliflower waste and maize straw at different ratios to control initial MC of 70 % (T1-70) and 80 % (T2-80), respectively, and composted in winter. As composting progressed, substantial organic matter degradation, progressive humification, decreases in electrical conductivity and increases of pH and germination index (GI) were observed in both treatments. Nonetheless, T1-70 accelerated heating rate early during composting, prolonged high temperature period (>50 °C) by 30 d, thus increased the harmless level of composting, and significantly improved the humification of end-products compared to T2-80. Results also revealed that T1-70 activated more indigenous microbes and enhanced microbial interactions early during composting, with the fungi enriched in T1-70 playing an important role in accelerating the composting process. Remarkably, the difference in composting temperatures, humification degree, and microbial communities between the two treatments was most significant during the maturation phase. In this phase, MWH_CFBk5, Planktosalinus, Pseudopedobacter, and Luteimonas enriched in T1-70 were positively correlated with humification indices. It is suggested that the effect of initial MC, resulting from different ratios of vegetable waste to maize straw, on their composting was mediated by the composting temperature and microbial communities at low temperatures.


Subject(s)
Composting , Microbiota , Vegetables , Zea mays , Composting/methods , Soil/chemistry , Soil Microbiology , Temperature , Cold Temperature
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