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1.
Front Microbiol ; 15: 1414141, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39044947

RESUMO

Sclerotinia rot is a serious disease that occurs on Zephyranthes candida. A thorough understanding of the pathogenic fungal species and understanding the biological characteristics are important for controlling sclerotinia. Fungal strains were isolated from the diseased leaves of Z. candida through tissue isolation. Koch's hypothesis screened pathogenic strains by pathogenicity of healthy leaves, including re-isolation and identification. A multigene phylogenetic tree was constructed by extracting genomic DNA from pathogenic strains and measuring the nucleotide sequences at four sites, including the internal transcribed spacer (ITS), RNA polymerase II second largest subunit (RPB2), glyceraldehyde-3-phosphate dehydrogenase (G3PDH), and heat shock protein 60 (HSP60). Morphological characteristics of the fungal structures were evaluated through microscopic analysis. The growth of pathogens was observed and recorded under different pH, different temperatures, different carbon sources and different nitrogen sources to clarify their biological characteristics. Representative strains D7, D13, X4, and X15 infected Z. candida and caused sclerotinia rot. At the beginning of the culture, white flocculent fungal hyphae appeared on the potato dextrose agar (PDA) medium, and black spherical to irregular-shaped sclerotia appeared at the edge of the colony after 7 days. The diameter of the sclerotia was 2.4-8.6 mm and 0.4-0.9 mm, respectively. One sclerotium was able to germinate from 1 to 5 apothecia. Ascus were cylindrical or spindle-shaped, with a size of 110.0-120.0 × 9.2-11.6 µm. One ascus contained eight colorless, oval ascospores, with a size of 8.4-12.0 × 4.5-5.5 µm. Based on the phylogenetic tree constructed with the gene sequences for ITS, G3PDH, HSP60, and RPB2, D7 and D13 shared 99% homology with sclerotinia sclerotiorum, whereas X4 and X15 shared 99% homology with sclerotinia minor. S. sclerotiorum growth was more suitable when the culture temperature was 15°C-25°C, pH 5.0, carbon source was maltose and nitrogen source was yeast powder. S. minor growth was more suitable when the culture temperature was 15°C, pH 5.0, the carbon source was glucose, and the nitrogen source was yeast powder. The results identified the pathogens as S. sclerotiorum and S. minor. To the best of our knowledge, this is the first report of S. sclerotiorum and S. minor causing sclerotinia rot on Z. candida. We herein aimed to identify the causal agent of sclerotinia rot of Z. candida in China based on morphological characteristics, molecular identification, and pathogenicity tests. Performed the experiments on the biological characteristics, to understand the law of disease occurrence. We also evaluated methods for the effective control of this disease. Our findings provide support for further studies on the pathogenesis mechanism of sclerotinia rot.

2.
Int J Nanomedicine ; 19: 7367-7381, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39050872

RESUMO

Purpose: Chemotherapy remains the primary therapeutic approach for advanced Hepatocellular Carcinoma (HCC). The therapeutic effect of chemotherapy is limited and the toxic side effects are serious. The aim of this study is to develop a nanobubble that is ultrasonically responsive to reduce the toxic side effects of direct chemotherapy. Methods: We developed curcumin/doxorubicin-cis-aconitic anhydride-polyethylene glycol nanobubble (C/DCNB) surface modified with acid-sensitive polyethylene glycol (PEG). And it is loaded with curcumin (CUR) and doxorubicin (DOX), as liposomes at the nanoscale for diagnosis and therapy of tumors. Results: In this study, the acid-sensitive PEG on the surface layer of nanobubbles serves to stabilize them in the blood circulatory system and in normal tissues, while peeling off in the acidic tumor microenvironment (pH 6.8). C/DCNB can identify tumor sites through contrast-enhanced ultrasound (CEUS). And ultrasound-mediated nanobubbles promote permeability of the tumor vascular, thus improving the enhanced permeability and retention (EPR) effects in the tumor, leading to the accumulation of nanobubbles in the tumor. After endocytosis of nanobubbles, drugs are released and curcumin generates reactive oxygen species (ROS) under ultrasound conditions. CUR can enhance the sensitivity of tumor cells to DOX by inhibiting the expression of P-glycoprotein. In vitro and vivo experiments demonstrate that C/DCNB can facilitate contrast-enhanced ultrasound imaging while simultaneously delivering drugs, enabling both imaging and treatment. Conclusion: The combination of C/DCNB and ultrasound provides an effective strategy for improving the efficiency of HCC therapy and imaging.


Assuntos
Carcinoma Hepatocelular , Curcumina , Doxorrubicina , Neoplasias Hepáticas , Polietilenoglicóis , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/patologia , Doxorrubicina/química , Doxorrubicina/farmacologia , Doxorrubicina/farmacocinética , Doxorrubicina/administração & dosagem , Curcumina/química , Curcumina/farmacologia , Curcumina/farmacocinética , Curcumina/administração & dosagem , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/terapia , Animais , Humanos , Polietilenoglicóis/química , Linhagem Celular Tumoral , Lipossomos/química , Camundongos , Espécies Reativas de Oxigênio/metabolismo , Antineoplásicos/química , Antineoplásicos/farmacologia , Antineoplásicos/farmacocinética , Camundongos Endogâmicos BALB C , Células Hep G2 , Camundongos Nus , Nanopartículas/química , Terapia por Ultrassom/métodos , Ensaios Antitumorais Modelo de Xenoenxerto
3.
J Proteome Res ; 2024 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-39013122

RESUMO

Neonatal respiratory distress syndrome (NRDS) is one of the most severe respiratory disorders in preterm infants (PTIs) due to immature lung development. To delineate the serum metabolic alterations and gut microbiota variations in NRDS and assess their implications on neonatal development, we enrolled 13 NRDS neonates and 12 PTIs and collected fecal and serum specimens after birth. Longitudinal fecal sampling was conducted weekly for a month in NRDS neonates. NRDS neonates were characterized by notably reduced gestational ages and birth weights and a higher rate of asphyxia at birth relative to PTIs. Early postnatal disturbances in tryptophan metabolism were evident in the NRDS group, concomitant with elevated relative abundance of Haemophilus, Fusicatenibacter, and Vibrio. Integrative multiomics analyses revealed an inverse relationship between tryptophan concentrations and Blautia abundance. At one-week old, NRDS neonates exhibited cortisol regulation anomalies and augmented hepatic catabolism. Sequential microbial profiling revealed distinct gut microbiota evolution in NRDS subjects, characterized by a general reduction in potentially pathogenic bacteria. The acute perinatal stress of NRDS leads to mitochondrial compromise, hormonal imbalance, and delayed gut microbiota evolution. Despite the short duration of NRDS, its impact on neonatal development is significant and requires extended attention.

4.
Artigo em Inglês | MEDLINE | ID: mdl-38936632

RESUMO

PURPOSE: Risk stratification of regional recurrence (RR) is clinically important in the design of adjuvant treatment and surveillance strategies in patients with clinical stage I non-small cell lung cancer (NSCLC) treated with stereotactic body radiation therapy (SBRT). This study aimed to develop a radiomics model predicting occult lymph node metastasis (OLNM) using surgical data and apply it to the prediction of RR in SBRT-treated early-stage NSCLC patients. METHODS AND MATERIALS: Patients with clinical stage I NSCLC who underwent curative surgery with systematic lymph node dissection from January 2013 to December 2018 (the training cohort) and from January 2019 to December 2020 (the validation cohort) were included. A preoperative computed tomography-based radiomics model, a clinical feature model, and a fusion model predicting OLNM were constructed. The performance of the 3 models was quantified and compared in the training and validation cohorts. Subsequently, the radiomics model was used to predict RR in a cohort of consecutive SBRT-treated early-stage NSCLC patients from 2 academic medical centers. RESULTS: A total of 769 patients were included. Eight computed tomography features were identified in the radiomics model, achieving areas under the curves of 0.85 (95% CI, 0.81-0.89) and 0.83 (95% CI, 0.80-0.88) in the training and validation cohorts, respectively. Nevertheless, adding clinical features did not improve the performance of the radiomics model. With a median follow-up of 40.0 (95% CI, 35.2-44.8) months, 32 of the 213 patients in the SBRT cohort developed RR and those in the high-risk group based on the radiomics model had a higher cumulative incidence of RR (P < .001) and shorter regional recurrence-free survival (P = .02), progression-free survival (P = .004) and overall survival (P = .006) than those in the low-risk group. CONCLUSIONS: The radiomics model based on pathologically confirmed data effectively identified patients with OLNM, which may be useful in the risk stratification among SBRT-treated patients with clinical stage I NSCLC.

6.
Abdom Radiol (NY) ; 2024 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-38907839

RESUMO

PURPOSE: To investigate the clinical significance and stage migration effect of radiological diameter-to-thickness (DT) ratio in HER2-positive resectable advanced gastric cancer (HER2-p RAGC). METHODS: 369 HER2-p RAGC patients were retrospectively enrolled and information on clinical pathological characteristics, radiological DT ratio, and outcomes [i.e., overall survival (OS) and progression-free survival (PFS)] was collected. Pearson's Chi-square and Student's t-test were employed to compare baseline characteristics. Clinical outcomes were estimated using Kaplan-Meier analysis and Log-rank test. Univariate and multivariate Cox regression models were utilized to analyze independent prognostic factors. RESULTS: HER2-p RAGC patients were stratified into two groups using a DT ratio cutoff value of 4.0 (p < 0.05). Patients with a DT ratio < 4.0 exhibited significantly longer OS (58.0 vs. 31.0 months) and PFS (43.0 vs. 24.0 months) than those with a DT ratio ≥ 4.0. DT ratio significantly predicted prognosis for N0 and II stage patients (p < 0.05). Patients with gastric body and antrum cancers demonstrated longer OS and PFS in the DT ratio < 4.0 group (p = 0.046, 0.017, 0.036 and 0.028). Multivariate Cox proportional hazard model identified age, pathological T category, pathological N category, pathological TNM category and DT ratio as independent prognostic factors. Notably, pStage II patients with a DT ratio ≥ 4.0 exhibited a similar prognosis to pStage III patients with a DT ratio < 4.0 (p = 0.418 for OS, 0.867 for PFS). CONCLUSION: Radiological DT ratio could evaluate the prognosis and detect higher malignant cases in HER2-p RAGC patients. Moreover, DT ratio might guide clinicians make postoperative strategies. TRIAL REGISTRATION: Retrospectively registered.

7.
Nanomaterials (Basel) ; 14(11)2024 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-38869539

RESUMO

With the rapid development of terahertz radar technology, the electromagnetic device for terahertz radar cross-section (RCS) reduction is worth investigating. However, the existing research concentrates on the RCS reduction metasurface with fixed performance working in the microwave band. This paper proposes a terahertz dynamic coding metasurface integrated with vanadium dioxide (VO2) for dual-polarized, dual-band, and wide-angle RCS reduction. The simulation result indicates that by switching the state of the VO2 between insulator and metal, the metasurface can realize the effective RCS reduction at 0.18 THz to 0.24 THz and 0.21 THz to 0.39 THz under the left-handed and right-handed circularly polarized incident waves. When the polar and azimuth angles of the incident wave vary from 0° to 40° and 0° to 360° respectively, this metasurface can maintain a 10 dB RCS reduction. This work has potential value in the terahertz stealth field.

8.
Acta Psychol (Amst) ; 248: 104354, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38878476

RESUMO

PURPOSE: Based on social exchange theory and social cognition theory, this paper studies the effect of work-related identity discrepancy on proactive behavior of close-leadership employees through hierarchical regression analysis and examines the mediating effect of face-pressure and the moderating effect of benevolent leadership. METHODS: This work surveyed 516 employees by questionnaire. The first round of survey mainly investigated employees in Changsha City, and the second round of survey mainly investigated employees' work-related identity discrepancy, face-pressure, benevolent leadership and proactive behavior in >10 regions. By tracking and matching, 396 valid questionnaires were finally obtained. Spss 22.0 was used to describe all the study variables; Mplus 7.0 is used to carry out a confirmatory factor analysis and a multi-path regression model. RESULTS: The difference in work-related identity discrepancy had a significant negative impact on proactive behavior. Face-pressure partially mediated the relationship between work-related identity discrepancy and proactive behavior. Benevolent leadership moderated the indirect relationship between work-related identity discrepancy, proactive behavior and face-pressure. We hope that the findings and discussions from this study will spark further exploration and practical application of enterprise management theories. CONCLUSION: In the context of leadership change, employee identity differences in perception can affect employee proactive behavior, especially for some close-leadership employees. Face-pressure in traditional Chinese culture has a prominent place. Managers should strive to foster an open and inclusive organizational atmosphere that promotes interaction and communication among employees, reduces the impact of negative factors like face pressure, and thereby stimulates employees' work initiative and innovative spirit. This enriches and deepens our understanding within the fields of organizational behavior and cross-cultural management.

9.
iScience ; 27(6): 110006, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38868202

RESUMO

Apolipoprotein E (apoE) plays a crucial role in the pathogenesis of Alzheimer's disease (AD). Microglia exhibit a substantial upregulation of apoE in AD-associated circumstances, despite astrocytes being the primary source of apoE expression and secretion in the brain. Although the role of astrocytic apoE in the brain has been extensively investigated, it remains unclear that whether and how apoE particles generated from astrocytes and microglia differ in biological characteristic and function. Here, we demonstrate the differences in size between apoE particles generated from microglia and astrocytes. Microglial apoE particles impair neurite growth and synapses, and promote neuronal senescence, whereas depletion of GPNMB (glycoprotein non-metastatic melanoma protein B) in microglial apoE particles mitigated these deleterious effects. In addition, human APOE4-expressing microglia are more neurotoxic than APOE3-bearing microglia. For the first time, these results offer concrete evidence that apoE particles produced by microglia are involved in neuronal senescence and toxicity.

10.
Virulence ; 15(1): 2368080, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38899573

RESUMO

Dendritic cells (DCs) present an ideal target for delivering immunogenic cargo due to their potent antigen-presenting capabilities. This targeting approach holds promise in vaccine development by enhancing the efficiency of antigen recognition and capture by DCs. To identify a high-affinity targeting peptide binding to rabbit DCs, rabbit monocyte-derived DCs (raMoDCs) were isolated and cultured, and a novel peptide, HS (HSLRHDYGYPGH), was identified using a phage-displayed peptide library. Alongside HS, two other DC-targeting peptides, KC1 and MY, previously validated in our laboratory, were employed to construct recombinant Lactgobacillus reuteri fusion-expressed rabbit hemorrhagic disease virus (RHDV) capsid protein VP60. These recombinant Lactobacillus strains were named HS-VP60/L. reuteri, KC1-VP60/L. reuteri, and MY-VP60/L. reuteri. The ability of these recombinant Lactobacillus to bind rabbit DCs was evaluated both in vivo and in vitro. Results demonstrated that the DC-targeting peptide KC1 significantly enhanced the capture efficiency of recombinant Lactobacillus by raMoDCs, promoted DC maturation, and increased cytokine secretion. Furthermore, oral administration of KC1-VP60/L. reuteri effectively induced SIgA and IgG production in rabbits, prolonged rabbit survival post-challenge, and reduced RHDV copies in organs. In summary, the DC-targeting peptide KC1 exhibited robust binding to raMoDCs, and recombinant Lactobacillus expressing KC1-VP60 protein antigens efficiently induced systemic and mucosal immune responses in rabbits, conferring protective efficacy against RHDV. This study offers valuable insights for the development of novel RHDV vaccines.


Assuntos
Células Dendríticas , Vírus da Doença Hemorrágica de Coelhos , Limosilactobacillus reuteri , Peptídeos , Animais , Células Dendríticas/imunologia , Coelhos , Vírus da Doença Hemorrágica de Coelhos/imunologia , Vírus da Doença Hemorrágica de Coelhos/genética , Limosilactobacillus reuteri/genética , Limosilactobacillus reuteri/imunologia , Peptídeos/imunologia , Peptídeos/genética , Infecções por Caliciviridae/prevenção & controle , Infecções por Caliciviridae/imunologia , Infecções por Reoviridae/prevenção & controle , Infecções por Reoviridae/imunologia , Proteínas do Capsídeo/genética , Proteínas do Capsídeo/imunologia , Vacinas Virais/imunologia , Vacinas Virais/genética , Lactobacillus/genética , Lactobacillus/imunologia
11.
Alzheimers Dement ; 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38938161

RESUMO

INTRODUCTION: To investigate the role of a novel type of protein kinase C delta (PKCδ) in the neuroinflammation of Alzheimer's disease (AD). METHODS: We analyzed PKCδ and inflammatory cytokines levels in cerebrospinal fluid (CSF) of AD and normal controls, as well as their correlations. The cellular expression pattern of PKCδ and the effects of PKCδ modulation on microglia-mediated neuroinflammation were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR), western blot, RNA sequencing (RNA-seq), and immunofluorescence staining. RESULTS: PKCδ levels were increased dramatically in the CSF of AD patients and positively correlated with cytokines. PKCδ is expressed mainly in microglia in the brain. Amyloid beta (Aß) stimulation increased PKCδ expression and secretion, which led to upregulation of the nuclear factor kappa B (NF-κB) pathway and overproduction of proinflammatory cytokines. Downregulation or inhibition of PKCδ attenuated Aß-induced microglial responses and improved cognitive function in an AD mouse model. DISCUSSION: Our study identifies PKCδ as a potential biomarker and therapeutic target for microglia-mediated neuroinflammation in AD. HIGHLIGHTS: Protein kinase C delta (PKCδ) levels increase in cerebrospinal fluid (CSF) of patients with Alzheimer's disease (AD), and positively correlate with elevated inflammatory cytokines in human subjects. PKCδ is expressed mainly in microglia in vivo, whereas amyloid beta (Aß) stimulation increases PKCδ expression and secretion, causing upregulation of the nuclear factor kappa B (NF-κB) pathway and production of inflammatory cytokines. Downregulation or inhibition of PKCδ attenuates Aß-enhanced NF-κB signaling and cytokine production in microglia and improves cognitive function in AD mice. PKCδ serves as a potential biomarker and therapeutic target for microglia-mediated neuroinflammation in AD.

12.
Cancer Immunol Immunother ; 73(8): 140, 2024 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-38833011

RESUMO

OBJECTIVES: To investigate the feasibility and potential clinical value of local consolidative therapy (LCT) in PD-1/PD-L1 inhibitor-treated metastatic non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: PD-1/PD-L1 inhibitor-treated metastatic NSCLC patients with measurable disease in three academic centers were screened and those with adequate follow-up were included. Oligo-residual disease (ORD) was defined as residual tumors limited to three organs and five lesions evaluated at the best response among patients with partial response or stable disease after PD-1/PD-L1 inhibitors. Oligometastatic and multiple-metastatic disease (OMD/MMD) were similarly classified at baseline. Locoregional interventions, administered after effective treatment of PD-1/PD-L1 inhibitors and before initial disease progression, were defined as LCT. Patterns of initial progressive disease (PD) were classified as involving only residual sites (RP), only new sites (NP), or a combination of both (BP). RESULTS: Among the 698 patients included, ORD was documented in 73 (47.1%) of 155 patients with baseline OMD and 60 (11.0%) of 543 patients with baseline MMD. With a median follow-up of 31.0 (range, 6.0-53.0) months, 108 patients with ORD developed initial PD, with RP, NP, and BP occurring in 51 (47%), 23 (21.3%), and 34 (31.5%), respectively. Among the 133 patients with ORD, those receiving LCT (n = 43) had longer progression-free survival (HR = 0.58, 95% CI 0.40-0.85, p = 0.01) and overall survival (HR = 0.49, 95% CI 0.30-0.79, p < 0.0001). CONCLUSION: ORD occurs with a clinically relevant frequency among PD-1/PD-L1 inhibitor-treated metastatic NSCLC patients and LCT may provide extra survival benefits in those with ORD.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Inibidores de Checkpoint Imunológico , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Masculino , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/mortalidade , Feminino , Pessoa de Meia-Idade , Idoso , Inibidores de Checkpoint Imunológico/uso terapêutico , Adulto , Neoplasia Residual , Antígeno B7-H1/antagonistas & inibidores , Idoso de 80 Anos ou mais , Receptor de Morte Celular Programada 1/antagonistas & inibidores , Incidência , Metástase Neoplásica , Seguimentos , Estudos Retrospectivos
13.
Poult Sci ; 103(6): 103674, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38583309

RESUMO

Microplastics biological toxicity, environmental persistence and biological chemicals have been paid widespread attention. Microplastics exposed to chicken spleen injury of the specific mechanism is unclear. Thus, we randomly assigned chickens to 4 groups: C (normal diet), L-MPs (1 mg/L), M-MPs (10 mg/L), and H-MPs (100 mg/L), and assessed spleen damage after 42 d of exposure. Morphologically, the boundary between the red and white pulp of the spleen was blurred, along with the expansion of the white pulp. It was further speculated that microplastics induced mitochondrial dynamic homeostasis (Drp1 upgraded, Mfn1, Mfn2, and OPA1 reduced), and provoked the mitochondrial apoptotic pathway (Bcl-2/Bax decreased, cytc, caspase3, and caspase9 raised), resulting in redox imbalance and lipid peroxide accumulation (MDA increased, CAT, GSH, and T-AOC plummeted), and further stimulated ferroptosis (FTH1, GPX4, and SLC7A11 decreased). Here we explored the impact of polystyrene microplastics on the spleen, as well as the programmed death (apoptosis and ferroptosis) involved, and the regulative role of mitochondria in this process. This could be of significant importance in bridging the gap in laboratory research on microplastics-induced spleen injury in chicken.


Assuntos
Galinhas , Microplásticos , Mitocôndrias , Poliestirenos , Baço , Animais , Mitocôndrias/efeitos dos fármacos , Baço/efeitos dos fármacos , Baço/patologia , Poliestirenos/toxicidade , Microplásticos/toxicidade , Apoptose/efeitos dos fármacos , Doenças das Aves Domésticas/induzido quimicamente , Distribuição Aleatória
14.
Behav Sci (Basel) ; 14(4)2024 Mar 23.
Artigo em Inglês | MEDLINE | ID: mdl-38667062

RESUMO

Physical exercise is crucial to the development of students' physical and mental health. This study explored the relationship between live sports learning and college students' exercise behaviors, and the mediating roles of exercise motivation and exercise commitment, aiming to provide theoretical bases for the future that explain the mechanism of live sports learning in exercise behaviors, as well as practical guidance for the promotion of positive physical exercise behaviors in college students. In total, 1189 college students from China volunteered to complete questionnaires. The results showed that live sports learning positively predicted college students' exercise behavior and that live sports learning was able to affect exercise behavior through the mediating roles of exercise motivation and exercise commitment, with specific mediating paths including the two independent mediating paths and a serial mediating path of exercise motivation and exercise commitment. This study confirmed, for the first time, on live sports learning in the process of promoting exercise behavior. It is suggested that educators instruct college students to regulate their participation in live sports learning and to cultivate healthy exercise motivation and exercise commitment, which is an effective way to facilitate college students' practice of physical activity.

15.
Hepatol Commun ; 8(4)2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38466883

RESUMO

BACKGROUND AIMS: The Revised Electronic Causality Assessment Method (RECAM), a computerized update of the Roussel Uclaf Causality Assessment Methodology (RUCAM), was recently proposed. In this study, we validated and compared the utility of the RECAM and RUCAM in Chinese patients with a single conventional or herbal agent-induced liver injury. METHODS: In this retrospective multicenter cohort of well-established DILI and non-DILI patients from 5 centers in China, the diagnostic performance of the RUCAM and RECAM was compared by AUC analysis. The consistency was evaluated by weighted kappa. The major causes of discrepancy were explored. RESULTS: A total of 481 DILI and 100 non-DILI patients were included. In total, 62.6% of the DILI cases were induced by conventional agents, and 37.4% were induced by herbs. The RECAM had relatively higher AUC than RUCAM for overall [0.947 (0.926-0.964) vs. 0.867 (0.836-0.893), p=0.0016], conventional agents [0.923 (0.890-0.949) vs. 0.819 (0.775-0.858), p=0.0185], and herbs [0.972 (0.941-0.989) vs.0.911 (0.866-0.944), p=0.0199]. Latency, scores associated with hepatitis B, and hepatotoxicity information of the insulting drugs were the 3 main causes for the inconsistency between RECAM and RUCAM scores. CONCLUSIONS: The RECAM had relatively better diagnostic performance than RUCAM, with a higher AUC for Chinese DILI patients. Timely updates of the LiverTox category and refinement of serum markers to exclude hepatitis B activity would further improve the applicability of RECAM in areas where the use of herbs and resolution of past HBV infections are common.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Hepatite B , Humanos , Doença Hepática Induzida por Substâncias e Drogas/diagnóstico , China , Eletrônica
16.
J Zhejiang Univ Sci B ; 25(3): 233-243, 2024 Mar 15.
Artigo em Inglês, Chinês | MEDLINE | ID: mdl-38453637

RESUMO

Microplastics (MPs) have attracted growing attention worldwide as an increasingly prevalent environmental pollutant. In addition, chicken meat is currently the most widely consumed kind of poultry in the global market. Consumer demand for chicken is on the rise both at home and abroad. As a result, the safety of chicken raising has also received significant attention. The lungs play an essential role in the physiological activities of chickens, and they are also the most vulnerable organs. Lung injury is difficult to repair after the accumulation of contaminants, and the mortality rate is high, which brings huge economic losses to farmers. The research on the toxicity of MPs has mainly focused on the marine ecosystem, while the mechanisms of toxicity and lung damage in chickens have been poorly studied. Thus, this study explored the effects of exposure to polystyrene microplastics (PS-MPs) at various concentrations for 42 d on chicken lungs. PS-MPs could cause lung pathologies and ultrastructural abnormalities, such as endoplasmic reticulum (ER) swelling, inflammatory cell infiltration, chromatin agglutination, and plasma membrane rupture. Simultaneously, PS-MPs increased the expression of genes related to the heat shock protein family (Hsp60, Hsp70, and Hsp90), ER stress signaling (activating transcription factor 6 (ATF6), ATF4, protein kinase RNA-like ER kinase (PERK), and eukaryotic translation initiation factor 2 subunit α (eIF2α)), pyroptosis-related genes (NOD-|, LRR- and pyrin domain-containing protein 3 (NLRP3), apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), interleukin-1ß (IL-1ß), cysteinyl aspartate-specific proteinase 1 (Caspase1), and gasdermin-D (GSDMD)), and the inflammatory signaling pathway (nuclear factor-|κB (NF-|κB), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2)). The above results showed that PS-MP exposure could result in lung stress, ER stress, pyroptosis, and inflammation in broilers. Our findings provide new scientific clues for further research on the mechanisms of physical health and toxicology regarding MPs.


Assuntos
Proteína 3 que Contém Domínio de Pirina da Família NLR , Pneumonia , Animais , Galinhas , Ecossistema , Estresse do Retículo Endoplasmático , Inflamassomos/metabolismo , Microplásticos/toxicidade , NF-kappa B/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Poliestirenos/toxicidade
17.
Pestic Biochem Physiol ; 199: 105761, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38458672

RESUMO

Excessive acetochlor residues present ecological and food safety challenges. Here, broiler chicks were exposed to varied acetochlor doses to first assess its effects on the gut. Subsequent dietary supplementation with omega-3 was used to assess its anti-contamination effects. Pathologically, acetochlor induced notable ileal lesions including inflammation, barrier disruption, tight junction loss, and cellular anomalies. Mechanistically, acetochlor stimulated the TNFα/TNFR1 and TLR4/NF-κB/NLRP3 pathways, promoting RIPK1/RIPK3 complex formation, MLKL phosphorylation, NLRP3 inflammasome activation, Caspase-1 activation, and GSDMD shearing with inflammatory factor release. These mechanisms elucidate ileal cell death patterns essential for understanding chicken enteritis. Omega-3 supplementation showed promise in mitigating inflammation, though its precise counteractive role remains unclear. Our findings suggest early omega-3 intervention offered protective benefits against acetochlor's adverse intestinal effects, emphasizing its potential poultry health management role. Harnessing dietary interventions' therapeutic potential will be pivotal in ensuring sustainable poultry production and food safety despite persistent environmental contaminants.


Assuntos
Galinhas , Proteína 3 que Contém Domínio de Pirina da Família NLR , Toluidinas , Animais , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Galinhas/metabolismo , NF-kappa B/metabolismo , Inflamação , Suplementos Nutricionais , Íleo/metabolismo , Ácidos Graxos Insaturados/uso terapêutico
18.
Heliyon ; 10(3): e24798, 2024 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-38333878

RESUMO

Background and objectives: The purpose of this research was to develop and validate the first prognostic nomograms for 3-, 5-, and 10-year cancer-specific survival (CSS) and overall survival (OS) in patients diagnosed with locally advanced thyroid cancer (LATC) by evaluating independent predictors of prognosis in a population of LATC patients. Methods: Demographics, clinicopathologic characteristics, treatment, and follow-up of 2396 LATC patients in the surveillance, epidemiology, and end results database from 2004 to 2015 were retrospectively analyzed and compared with patients with LATC according to staging. We randomized all LATC patients into training and validation groups in a 7:3 ratio. Cox regression analyses helped us to derive independent prognostic factors for LATC patients. According to these results, we established and validated the first prognostic nomograms and risk stratification. Results: In our research, the clinical information of LATC patients was compared and significant differences were found in the relevant variables including CSS and OS (P < 0.05), with CSS of 82.0 % and 49.0 %, and OS of 70.6 % and 40.0 %, respectively. Cox regression analyses showed that age at diagnosis, tumor diameter, presence of DM, extrathyroidal extension sites, histological type, thyroidectomy scope, radiotherapy status, and chronological sequence of radiotherapy and surgery were observably correlated with CSS in LATC patients, and in addition to the above factors, gender, marital status, and chemotherapy status were also observably correlated with OS in LATC patients. The prognostic predictive power of the above factors is visualized by the Kaplan-Meier survival curve. The concordance index of nomograms for CSS and OS were 0.933, 0.925, and 0.926 (CSS), 0.918, 0.909, and 0.906 (OS), respectively, and the time-dependent receiver operating characteristic curve, area under curve, calibration curve and decision curve analysis curve indicate that the nomograms have good discriminatory ability, accuracy and clinical applicability in both the training and validation groups. Conclusions: In these findings, we drawed a conclusion that there were significant differences in clinical information between patients with T4a and T4b LATC, and we established and validated the first prognostic nomograms and risk stratification of CSS and OS for LATC patients at 3, 5, and 10 years, which will help clinicians to individualize their postoperative treatment and individualized follow-up.

19.
Cancer ; 130(15): 2601-2610, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-38353467

RESUMO

BACKGROUND: The objective of this study was to explore the abilities of atezolizumab plus chemotherapy in preventing brain metastases (BMs) among metastatic non-small cell lung cancer (NSCLC) without initial BMs, as well as the risk factors of BMs. METHODS: Individual patient data from three trials involving first-line atezolizumab for metastatic NSCLC (IMpower130, IMpower131, and IMpower150) were pooled. Among patients without baseline BMs and without epidermal growth factor receptor (EGFR) and/or anaplastic lymphoma kinase (ALK) mutations, those receiving atezolizumab + chemotherapy ± bevacizumab were classified as the atezolizumab plus chemotherapy group and those receiving placebo + chemotherapy ± bevacizumab were classified as the chemotherapy group. The cumulative incidences of BM (CI-BMs) between the two groups were compared. Other factors associated with the CI-BM were analyzed by Cox regression analyses. RESULTS: With a median follow-up of 17.6 months (range, 0.03-33.64 months), 74 (3.1%) of the 2380 enrolled patients developed BMs, including 50 (3.1%) and 24 (3.0%) in the atezolizumab plus chemotherapy group (n = 1589) and the chemotherapy group (n = 791), respectively. The CI-BMs at 6, 12, and 24 months were 1.7%, 2.8%, and 3.3%, respectively. After taking competing risk events into account, there was no significant difference in the CI-BMs between the two groups (p = .888). Nevertheless, the use of bevacizumab and the histology of nonsquamous NSCLC were found to be independently associated with the risk of BMs. CONCLUSIONS: In patients with metastatic EGFR/ALK wild-type NSCLC without baseline BMs, adding atezolizumab in the first-line treatment might not reduce the CI-BM. However, the administration of bevacizumab may reduce the risk of BMs.


Assuntos
Anticorpos Monoclonais Humanizados , Protocolos de Quimioterapia Combinada Antineoplásica , Bevacizumab , Neoplasias Encefálicas , Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/patologia , Neoplasias Encefálicas/secundário , Neoplasias Encefálicas/tratamento farmacológico , Neoplasias Encefálicas/epidemiologia , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Masculino , Fatores de Risco , Feminino , Pessoa de Meia-Idade , Bevacizumab/uso terapêutico , Bevacizumab/administração & dosagem , Incidência , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Adulto , Quinase do Linfoma Anaplásico/genética , Receptores ErbB/genética , Receptores ErbB/antagonistas & inibidores
20.
Transl Lung Cancer Res ; 13(1): 126-138, 2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-38404989

RESUMO

Background: The impact of cranial radiotherapy (RT) on overall survival (OS) of patients with brain metastasis (BM) from non-small cell lung cancer (NSCLC) receiving programmed death 1/programmed death-ligand 1 (PD-1/PD-L1) inhibitors remains unclear. We aimed to examine the effect of previous cranial RT on the efficacy and neurological toxicity of PD-1/PD-L1 inhibitors in the treatment of patients with NSCLC. Methods: Patient-level data from seven prospective trials involving atezolizumab for the treatment of NSCLC [BIRCH (NCT02031458), FIR (NCT01846416), IMpower130 (NCT02367781), IMpower131 (NCT02367794), IMpower150 (NCT02366143), OAK (NCT02008227), and POPLAR (NCT01903993)] were pooled. Patients with baseline BM were divided into two subgroups based on previous cranial RT before initiation of treatment: patients with previously irradiated BM (iBM) and patients with non-irradiated BMs (niBM). Results: The per-protocol population consisted of 4,714 patients, including 3,176 in the atezolizumab group and 1,538 in the comparator chemotherapy group. In the atezolizumab group, OS was better in patients with BM (n=308) compared to patients without BM (n=2,868) [hazard ratio (HR): 0.83; 95% confidence interval (CI): 0.70-0.98; P=0.028]. Among patients with BM, patients with iBM (n=280) had a numerically longer OS (HR: 0.66; 95% CI: 0.41-1.07; P=0.090) than those with niBM (n=28). Intriguingly, OS was longer in patients with iBM than those without BM before (HR: 0.83; 95% CI: 0.70-0.99; P=0.043) and after (HR: 0.40; 95% CI: 0.32-0.49; P<0.0001) propensity score matching, while OS was similar between patients with niBM and those without BM. The survival advantage of patients with iBM over those without BM was not observed in the chemotherapy group. Atezolizumab-related serious neurological adverse events occurred in 16 (0.6%) patients without BM, none in those with niBM, and 2 (0.7%) patients with iBM. Conclusions: These data suggest potential synergistic effects of cranial RT and anti-PD-(L)1 therapy in NSCLC patients, which warrants further validation.

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