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1.
Front Oncol ; 14: 1447393, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39257555

RESUMO

Aim: Comparing the safety, effectiveness, and mid-term survival rates of robot-assisted minimally invasive esophagectomy (RAMIE) and video-assisted minimally invasive esophagectomy (VAMIE). Methods: A total of 842 patients undergoing minimally invasive esophagectomy were analyzed, including 694 patients in VAMIE group and 148 in RAMIE group. PSM analysis was applied to generate matched pairs for further comparison. Operative outcomes, postoperative complications and Mid-term outcomes were compared between all patients in matched groups. Results: After 1:4 PSM, 148 patients in the RAMIE and 592 patients in the VAMIE. Compared to VAMIE, RAMIE exhibited earlier removal of chest and neck drainage tubes, shorter postoperative hospital stays, and a higher number of lymph node dissections. However, the surgical duration of RAMIE was longer than that of VAMIE. Postoperative complications were no statistically significant between the RAMIE and VAMIE groups. There was no statistically significant difference in the 3-year OS and DFS between the two groups. Conclusion: Compared to VAMIE, RAMIE emerges as a viable and safe surgical approach and suggests RAMIE as a potential alternative to minimally invasive esophagectomy.

2.
Zhongguo Zhong Yao Za Zhi ; 49(16): 4298-4312, 2024 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-39307767

RESUMO

Chronic obstructive pulmonary disease(COPD) is a progressive lung dysfunction(disease) caused by long-term inhalation of toxic particles, especially smoking. The continued exposure to harmful substances triggers an abnormal inflammatory response, which causes permanent damage to the respiratory system, ultimately leading to irreversible pathological changes. Lung macrophages(LMs) are key innate immune effectors involved in the recognition, phagocytosis, and clearance of pathogens, as well as in the processing of inhaled hazardous particulate matter(e. g., cigarette smoke and particulate matter). LMs are polarized toward the M1 or M2 phenotype in response to the activation of inflammatory mediators to exert pro-/anti-inflammatory effects, respectively, thus being involved in the pulmonary parenchymal damage(emphysema) and repair(airway remodeling) throughout the process of COPD.In addition, they are responsible for phagocytosis and clearance of apoptotic or necrotic tissue cells, which helps to maintain the stability of the microenvironment in the lungs of COPD patients. Modern studies have revealed that macrophage polarization plays a pivotal role in the pathogenesis and development of COPD and is considered a potential target for treating COPD because of its ability to reduce airway inflammation, inhibit tissue remodeling, and combat oxidative stress. In recent years, traditional Chinese medicine(TCM) and its active ingredients have become a hot area in the treatment of COPD by targeting the balance of M1/M2 macrophage polarization. TCM and its active ingredients can intervene in the inflammatory response to promote the repair of the lung tissue in the patients with COPD. This paper reviews the research achievements of TCM and its active ingredients in this field in recent years,aiming to provide a scientific basis and strong support for the precise diagnosis and treatment of COPD.


Assuntos
Medicamentos de Ervas Chinesas , Macrófagos , Doença Pulmonar Obstrutiva Crônica , Doença Pulmonar Obstrutiva Crônica/tratamento farmacológico , Doença Pulmonar Obstrutiva Crônica/imunologia , Humanos , Animais , Macrófagos/efeitos dos fármacos , Macrófagos/imunologia , Medicamentos de Ervas Chinesas/administração & dosagem , Medicamentos de Ervas Chinesas/farmacologia , Medicina Tradicional Chinesa
3.
BMJ Open ; 14(9): e083051, 2024 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-39322594

RESUMO

OBJECTIVES: To characterise the prevalence of myopia and eye diseases among school adolescents and children in Southwest China, and to evaluate the effectiveness of myopia control tools. DESIGN: Retrospective cohort study. SETTING: Across 95 basic education institutions in Southwest China. PARTICIPANTS: 96 146 children aged 3-17 years from a school-based survey conducted between 2019 and 2021. PRIMARY OUTCOME MEASURES: The data of vision assessment and eye disease examination of school students were analysed, including a total of four surveys once per semester. The prevalence of myopia categorised as low (-0.5D to -3.0D), moderate (-3.0D to -6.0D) and high (≥-6.0D), along with the prevalence of significant ocular diseases, was assessed. Stratified analyses were conducted to investigate the impact of correction time on visual acuity (VA) and biological parameters. Subsequently, the subjects across the groups were matched using the nearest neighbour method, followed by multidimensional statistical analysis. RESULTS: The prevalence of myopia among the surveyed students was 38.39%. After controlling for confounding variables, the statistical analysis revealed a 0.1 increase in mean VA within the orthokeratology group and a 0.1 decrease in VA within the spectacle group (p<0.001), with statistically significant differences in corneal radius, corneal curvature and equivalent spherical lens (p<0.05). Multivariate analysis indicated a statistically significant reduction in VA in the ophthalmopathy group compared with the control group (p=0.031). Furthermore, it was demonstrated that the risk of eye disease during vision correction was greater among older students than their younger counterparts (OR>1), and that female students exhibited a higher risk than male students (OR=1.5). CONCLUSIONS: The current high prevalence of myopia and eye diseases among Southwest China's school youths demands public health attention. Minors wearing orthokeratology lenses at night, especially in primary school, exhibit significantly improved naked-eye vision. However, vigilant eye healthcare during the correction period is crucial, especially for girls.


Assuntos
Miopia , Acuidade Visual , Humanos , Miopia/epidemiologia , Miopia/prevenção & controle , Miopia/terapia , Adolescente , China/epidemiologia , Masculino , Feminino , Criança , Estudos Retrospectivos , Prevalência , Pré-Escolar , Óculos , Oftalmopatias/epidemiologia , Oftalmopatias/etiologia , Oftalmopatias/prevenção & controle , Procedimentos Ortoceratológicos/métodos , Instituições Acadêmicas
4.
Water Res ; 263: 122175, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39088878

RESUMO

The depletion of nutrient sources in fertilizers demands a paradigm shift in the treatment of nutrient-rich wastewater, such as urine, to enable efficient resource recovery and high-value conversion. This study presented an integrated bipolar membrane electrodialysis (BMED) and hollow fiber membrane (HFM) system for near-complete resource recovery and zero-discharge from urine treatment. Computational simulations and experimental validations demonstrated that a higher voltage (20 V) significantly enhanced energy utilization, while an optimal flow rate of 0.4 L/min effectively mitigated the negative effects of concentration polarization and electro-osmosis on system performance. Within 40 min, the process separated 90.13% of the salts in urine, with an energy consumption of only 8.45 kWh/kgbase. Utilizing a multi-chamber structure for selective separation, the system achieved recovery efficiencies of 89% for nitrogen, 96% for phosphorus, and 95% for potassium from fresh urine, converting them into high-value products such as 85 mM acid, 69.5 mM base, and liquid fertilizer. According to techno-economic analysis, the cost of treating urine using this system at the lab-scale was $6.29/kg of products (including acid, base, and (NH4)2SO4), which was significantly lower than the $20.44/kg cost for the precipitation method to produce struvite. Excluding fixed costs, a net profit of $18.24/m3 was achieved through the recovery of valuable products from urine using this system. The pilot-scale assessment showed that the net benefit amounts to $19.90/m3 of urine, demonstrating significant economic feasibility. This study presents an effective approach for the near-complete resource recovery and zero-discharge treatment of urine, offering a practical solution for sustainable nutrient recycling and wastewater management.


Assuntos
Membranas Artificiais , Urina , Urina/química , Eliminação de Resíduos Líquidos/métodos , Águas Residuárias/química , Fósforo , Técnicas Eletroquímicas/métodos , Nitrogênio , Purificação da Água/métodos , Fertilizantes , Potássio/urina
5.
J Periodontol ; 2024 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-39210600

RESUMO

BACKGROUND: The polarization of macrophages into an anti-inflammatory phenotype is crucial for resolving periodontal inflammation. It has been reported that B10 cells can regulate the immune response of macrophages during inflammation and are also able to regulate inflammation in periodontitis. However, whether B10 cells' regulation function in periodontitis is related to macrophage polarization remains unclear. This study aims to investigate whether B10 cells can regulate macrophage polarization in periodontitis. METHODS: Macrophages were cocultured with B10 cells in vitro for 5 days. After coculture, macrophages were obtained for analysis directly or followed by stimulation with Pg-LPS/IFN-γ or IL-4/IL-13. Flow cytometry and/or reverse transcriptase-polymerase chain reaction (RT-PCR) were employed to detect the expression of IL-1ß, iNOS, TNF-α, CD206, and ARG-1 in macrophages. B10 cells were transferred on the 5th day after ligation in wild or macrophage-depletion mice. Toluidine blue and TRAP staining were used to evaluate alveolar bone resorption and osteoclast activation. Immunohistochemistry was employed to detect the expression of CD68, IL-1ß, TNF-α, iNOS, ARG-1, and IL-10. Immunofluorescence was used to detect the expression of CD68+CD86+M1 macrophages and CD68+CD206+M2 macrophages. RESULTS: In vitro, B10 cells inhibit the expression of IL-1ß, iNOS, and TNF-α in macrophages while increasing the expression of CD206 and ARG-1. In experimental periodontitis, B10 cells inhibit the polarization of CD68+CD86+M1 macrophages and iNOS expression but enhance the polarization of CD68+CD206+M2 macrophages and ARG-1 expression. Importantly, the depletion of macrophages partially weakened the regulation function of B10 cells in periodontitis. CONCLUSIONS: B10 cells promote M2 macrophage polarization, inhibit M1 macrophage polarization in periodontitis, and alleviate periodontitis partially by regulating macrophage polarization.

6.
Mar Drugs ; 22(8)2024 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-39195461

RESUMO

Pinctada fucata meat is the main by-product of the pearl harvesting industry. It is rich in nutrition, containing a lot of protein and peptides, and holds significant value for both medicine and food. In this study, a new active protein was discovered and expressed heterogeneously through bioinformatics analysis. It was then identified using Western blot, molecular weight, and mass spectrometry. The antibacterial activity, hemolysis activity, antioxidant activity, and Angiotensin-Converting Enzyme II (ACE2) inhibitory activity were investigated. An unknown functional protein was screened through the Uniprot protein database, and its primary structure did not resemble existing proteins. It was an α-helical cationic polypeptide we named PFAP-1. The codon-optimized full-length PFAP-1 gene was synthesized and inserted into the prokaryotic expression vector pET-30a. The induced expression conditions were determined with a final isopropyl-ß-d-thiogalactoside (IPTG) concentration of 0.2 mM, an induction temperature of 15 °C, and an induction time of 16 h. The recombinant PFAP-1 protein, with low endotoxin and sterility, was successfully prepared. The recombinant PFAP-1 protein exhibited strong antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) in vitro, and the diameter of the inhibition zone was 15.99 ± 0.02 mm. Its minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were 37.5 µg/mL and 150 µg/mL, respectively, and its hemolytic activity was low (11.21%) at the bactericidal concentration. The recombinant PFAP-1 protein significantly inhibited the formation of MRSA biofilm and eradicated MRSA biofilm. It also demonstrated potent 1,1-diphenyl-2-picryl-hydrazyl radical (DPPH) scavenging activity with a half-maximal inhibitory concentration (IC50) of 40.83 µg/mL. The IC50 of ACE2 inhibition was 5.66 µg/mL. Molecular docking results revealed that the optimal docking fraction of PFAP-1 protein and ACE2 protein was -267.78 kcal/mol, with a confidence level of 0.913. The stable binding complex was primarily formed through nine groups of hydrogen bonds, three groups of salt bridges, and numerous hydrophobic interactions. In conclusion, recombinant PFAP-1 can serve as a promising active protein in food, cosmetics, or medicine.


Assuntos
Antibacterianos , Staphylococcus aureus Resistente à Meticilina , Testes de Sensibilidade Microbiana , Pinctada , Animais , Antibacterianos/farmacologia , Antibacterianos/química , Pinctada/genética , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Hemólise/efeitos dos fármacos , Antioxidantes/farmacologia , Antioxidantes/química , Antioxidantes/isolamento & purificação , Proteínas Recombinantes/farmacologia , Proteínas Recombinantes/isolamento & purificação , Inibidores da Enzima Conversora de Angiotensina/farmacologia , Inibidores da Enzima Conversora de Angiotensina/química , Inibidores da Enzima Conversora de Angiotensina/isolamento & purificação , Humanos
7.
Int J Oral Sci ; 16(1): 55, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-39217161

RESUMO

Endo-periodontal lesions (EPLs) involve both the periodontium and pulp tissue and have complicated etiologies and pathogenic mechanisms, including unique anatomical and microbiological characteristics and multiple contributing factors. This etiological complexity leads to difficulties in determining patient prognosis, posing great challenges in clinical practice. Furthermore, EPL-affected teeth require multidisciplinary therapy, including periodontal therapy, endodontic therapy and others, but there is still much debate about the appropriate timing of periodontal therapy and root canal therapy. By compiling the most recent findings on the etiology, pathogenesis, clinical characteristics, diagnosis, therapy, and prognosis of EPL-affected teeth, this consensus sought to support clinicians in making the best possible treatment decisions based on both biological and clinical evidence.


Assuntos
Consenso , Doenças Periodontais , Tratamento do Canal Radicular , Humanos , Doenças Periodontais/terapia , Doenças Periodontais/diagnóstico , Prognóstico
8.
Hemoglobin ; : 1-4, 2024 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-39103314

RESUMO

We reported a rare ß-thalassemia patient, a 41-year-old Chinese male with small cell hypopigmentation anemia, jaundice and splenomegaly as the main clinical symptoms. By using Next-Generation Sequencing (NGS), we identified a novel de novo HBB mutation(c.358_365dup, p.Phe123Alafs*39) which resulted in an abnormally prolonged ß-globin chain comprising 159 amino acid residues. The secondary and three-dimensional structures of the ß-globin predicted that the novel prolonged ß-globin chain has a considerable risk of instability in the hemoglobin, and leads to clinical phenotype. This study contributes to the enrichment of the genetic pathogenic mutation database for thalassemia and underscores the significance of NGS in the screening of mutations for thalassemia families.

9.
Artigo em Inglês | MEDLINE | ID: mdl-38994612

RESUMO

INTRODUCTION: Chronic diabetic wounds pose a significant threat to the health of diabetic patients, representing severe and enduring complications. Globally, an estimated 2.5% to 15% of the annual health budget is associated with diabetes, with diabetic wounds accounting for a substantial share. Exploring new therapeutic agents and approaches to address delayed and impaired wound healing in diabetes becomes imperative. Traditional Chinese medicine (TCM) has a long history and remarkable efficacy in treating chronic wound healing. In this study, all topically applied proprietary Chinese medicines (pCMs) for wound healing officially approved by the National Medical Products Administration (NMPA) were collected from the NMPA TCM database. Data mining was employed to obtain a high-frequency TCM ingredients pair, Pearl-Borneol (1:1). METHOD: This study investigated the effect and molecular mechanism of the Pearl-Borneol pair on the healing of diabetic wounds by animal experiments and metabolomics. The results from animal experiments showed that the Pearl-Borneol pair significantly accelerated diabetic wound healing, exhibiting a more potent effect than the Pearl or Borneol treatment alone. Meanwhile, the metabolomics analysis identified significant differences in metabolic profiles in wounds between the model and normal groups, indicating that diabetic wounds had distinct metabolic characteristics from normal wounds. Moreover, Vaseline-treated wounds exhibited similar metabolic profiles to the wounds from the model group, suggesting that Vaseline might have a negligible impact on diabetic wound metabolism. In addition, wounds treated with Pearl, Borneol, and Pearl-Borneol pair displayed significantly different metabolic profiles from Vaseline-treated wounds, signifying the influence of these treatments on wound metabolism. Subsequent enrichment analysis of the metabolic pathway highlighted the involvement of the arginine metabolic pathway, closely associated with diabetic wounds, in the healing process under Pearl- Borneol pair treatment. Further analysis revealed elevated levels of arginine and citrulline, coupled with reduced nitric oxide (NO) in both the model and Vaseline-treated wounds compared to normal wounds, pointing to impaired arginine utilization in diabetic wounds. Interestingly, treatment with Pearl and Pearl-Borneol pair lowered arginine and citrulline levels while increasing NO content, suggesting that these treatments may promote the catabolism of arginine to generate NO, thereby facilitating faster wound closure. Additionally, borneol alone significantly elevated NO content in wounds, potentially due to its ability to directly reduce nitrates/nitrites to NO. Oxidative stress is a defining characteristic of impaired metabolism in diabetic wounds. RESULTS: The result showed that both Pearl and Pearl-Borneol pair decreased the oxidative stress biomarker methionine sulfoxide level in diabetic wounds compared to those treated with Vaseline, indicating that Pearl alone or combined with Borneol may enhance the oxidative stress microenvironment in diabetic wounds. CONCLUSION: In summary, the findings validate the effectiveness of the Pearl-Borneol pair in accelerating the healing of diabetic wounds, with effects on reducing oxidative stress, enhancing arginine metabolism, and increasing NO generation, providing a mechanistic basis for this therapeutic approach.

10.
Transl Oncol ; 47: 102050, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38981245

RESUMO

PURPOSE: Development and validation of a radiomics model for predicting occult locally advanced esophageal squamous cell carcinoma (LA-ESCC) on computed tomography (CT) radiomic features before implementation of treatment. METHODS: The study retrospectively collected 574 patients with esophageal squamous cell carcinoma (ESCC) from two medical centers, which were divided into three cohorts for training, internal and external validation. After delineating volume of interest (VOI), radiomics features were extracted and subjected to feature selection using three robust methods. Subsequently, 10 machine learning models were constructed, among which the optimal model was utilized to establish a radiomics signature. Furthermore, a predictive nomogram incorporating both clinical and radiomics signatures was developed. The performance of these models was evaluated through receiver operating characteristic curves, calibration curves, decision curve analysis as well as measures including accuracy, sensitivity, and specificity. RESULTS: A total of 19 radiomics features were selected. The multilayer perceptron (MLP), which was found to be optimal, achieved an AUC of 0.919, 0.864 and 0.882 in the training, internal and external validation cohorts, respectively. Similarly, MLP showed good accuracy in distinguish occult LA-ESCC in subgroup of cT1-2N0M0 diagnosed by clinicians with 0.803 and 0.789 in two validation cohorts respectively. By incorporating the radiomics signature with clinical signature, a predictive nomogram demonstrated superior prediction performance with an AUC of 0.877 and accuracy of 0.85 in external validation cohort. CONCLUSION: The radiomics and machine learning model can offers improved accuracy in prediction of occult LA-ESCC, providing valuable assistance to clinicians when choosing treatment plans.

11.
New Phytol ; 243(6): 2401-2415, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39073209

RESUMO

Mycorrhizal associations are key mutualisms that shape the structure of forest communities and multiple ecosystem functions. However, we lack a framework for predicting the varying dominance of distinct mycorrhizal associations in an integrated proxy of multifunctionality across ecosystems. Here, we used the datasets containing diversity of mycorrhizal associations and 18 ecosystem processes related to supporting, provisioning, and regulating services to examine how the dominance of ectomycorrhiza (EcM) associations affects ecosystem multifunctionality in subtropical mountain forests in Southwest China. Meanwhile, we synthesized the prevalence of EcM-dominant effects on ecosystem functioning in forest biomes. Our results demonstrated that elevation significantly modified the distributions of EcM trees and fungal dominance, which in turn influenced multiple functions simultaneously. Multifunctionality increased with increasing proportion of EcM associations, supporting the ectomycorrhizal-dominance hypothesis. Meanwhile, we observed that the impacts of EcM dominance on individual ecosystem functions exhibited different relationships among forest biomes. Our findings highlight the importance of ectomycorrhizal dominance in regulating multifunctionality in subtropical forests. However, this ectomycorrhizal feedback in shaping ecosystem functions cannot necessarily be generalized across forests. Therefore, we argue that the predictions for ecosystem multifunctionality in response to the shifts of mycorrhizal composition could vary across space and time.


Assuntos
Florestas , Micorrizas , Micorrizas/fisiologia , Clima Tropical , China , Ecossistema , Modelos Biológicos , Árvores/microbiologia , Árvores/fisiologia , Biodiversidade , Altitude
12.
Acta Pharmacol Sin ; 45(10): 2163-2173, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38834683

RESUMO

Bruton's tyrosine kinase (BTK) has emerged as a therapeutic target for B-cell malignancies, which is substantiated by the efficacy of various irreversible or reversible BTK inhibitors. However, on-target BTK mutations facilitating evasion from BTK inhibition lead to resistance that limits the therapeutic efficacy of BTK inhibitors. In this study we employed structure-based drug design strategies based on established BTK inhibitors and yielded a series of BTK targeting compounds. Among them, compound S-016 bearing a unique tricyclic structure exhibited potent BTK kinase inhibitory activity with an IC50 value of 0.5 nM, comparable to a commercially available BTK inhibitor ibrutinib (IC50 = 0.4 nM). S-016, as a novel irreversible BTK inhibitor, displayed superior kinase selectivity compared to ibrutinib and significant therapeutic effects against B-cell lymphoma both in vitro and in vivo. Furthermore, we generated BTK inhibitor-resistant lymphoma cells harboring BTK C481F or A428D to explore strategies for overcoming resistance. Co-culture of these DLBCL cells with M0 macrophages led to the polarization of M0 macrophages toward the M2 phenotype, a process known to support tumor progression. Intriguingly, we demonstrated that SYHA1813, a compound targeting both VEGFR and CSF1R, effectively reshaped the tumor microenvironment (TME) and significantly overcame the acquired resistance to BTK inhibitors in both BTK-mutated and wild-type BTK DLBCL models by inhibiting angiogenesis and modulating macrophage polarization. Overall, this study not only promotes the development of new BTK inhibitors but also offers innovative treatment strategies for B-cell lymphomas, including those with BTK mutations.


Assuntos
Tirosina Quinase da Agamaglobulinemia , Antineoplásicos , Resistencia a Medicamentos Antineoplásicos , Inibidores de Proteínas Quinases , Tirosina Quinase da Agamaglobulinemia/antagonistas & inibidores , Tirosina Quinase da Agamaglobulinemia/metabolismo , Humanos , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/uso terapêutico , Inibidores de Proteínas Quinases/química , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Animais , Linhagem Celular Tumoral , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Camundongos , Descoberta de Drogas , Relação Estrutura-Atividade , Piperidinas/farmacologia , Piperidinas/uso terapêutico , Piperidinas/química
13.
Biomed Pharmacother ; 176: 116863, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38850650

RESUMO

Pyroptosis is a lytic and pro-inflammatory form of regulated cell death characterized by the formation of membrane pores mediated by the gasdermin protein family. Two main activation pathways have been documented: the caspase-1-dependent canonical pathway and the caspase-4/5/11-dependent noncanonical pathway. Pyroptosis leads to cell swelling, lysis, and the subsequent release of inflammatory mediators, including interleukin-1ß (IL-1ß) and interleukin-18 (IL-18). Chronic inflammation is a well-established foundation and driver for the development of metabolic diseases. Conversely, metabolic pathway dysregulation can also induce cellular pyroptosis. Recent studies have highlighted the significant role of pyroptosis modulation in various metabolic diseases, including type 2 diabetes mellitus, obesity, and metabolic (dysfunction) associated fatty liver disease. These findings suggest that pyroptosis may serve as a promising novel therapeutic target for metabolic diseases. This paper reviews an in-depth study of the current advancements in understanding the role of pyroptosis in the progression of metabolic diseases.


Assuntos
Doenças Metabólicas , Piroptose , Piroptose/fisiologia , Humanos , Doenças Metabólicas/metabolismo , Doenças Metabólicas/patologia , Animais , Transdução de Sinais , Inflamação/metabolismo , Inflamação/patologia
14.
J Leukoc Biol ; 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38864460

RESUMO

BMI1 Polycomb Ring Finger Proto-Oncogene (BMI1) is involved in the pathogenesis of different cancers, including acute myeloid leukemia (AML). However, the role of the circular RNA of BMI1 (circBMI1) has not been studied. Our study aimed to investigate the role and mechanism of circBMI1 in AML. circBMI1 was significantly decreased in bone marrow mononuclear cells aspirated from patients with AML. Receiver operating characteristic curve analysis showed that circBMI1 could distinguish patients with AML from controls. By overexpressing and knocking down circBMI1 in HL-60 cells, we found that circBMI1 inhibited cell proliferation, promoted apoptosis, and increased chemotherapeutic drug sensitivity in AML. Experiments using severe combined immune-deficient mice and circBMI1 transgenic mice showed that mice with circBMI1 overexpression had lower white blood cell counts, which suggested less severe AML invasion. RNA immunoprecipitation and dual-luciferase reporter assay revealed binding sites among circBMI1, miR-338-5p, and inhibitor of DNA binding 4 (ID4). Rescue experiments proved that circBMI1 inhibited AML progression by binding to miR-338-5p, which affected the expression of ID4. By coculturing exosomes extracted from circBMI1-HL-60 and small interfering circBMI1-HL-60 cells with HL-60 cells, we found that exosomes from circBMI1-HL-60 cells showed tumor suppressive effects, namely inhibiting HL-60 proliferation, promoting apoptosis, and increasing chemotherapeutic drug sensitivity. Exosomes from small interfering circBMI1-HL-60 cells showed the opposite effects. circBMI1 may act as an exosome-dependent tumor inhibitor. circBMI1, a potential biomarker for clinical diagnosis, acts as a tumor suppressor in AML by regulating miR-338-5p/ID4 and might affect the pathogenesis of AML by exosome secretion.

15.
Curr Med Chem ; 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38920076

RESUMO

Methamphetamine (METH), an amphetamine-type stimulant, has been extensively abused globally in the past decades. METH use causes great harm to the major systems of the human body. Specifically, METH has a negative impact on the hypothalamic- pituitary-testicular axis, testicular structure, sperm function, ovarian folliculogenesis, oocyte quality, embryo development, and newborns. However, the mechanisms underlying these toxic effects have not yet been fully described. This study reviews the evidence concerning the impact of METH on male and female reproduction in the context of the testis, sperm, ovaries, oocytes, reproductive hormones, embryo development, and newborns, discussing the potential pathophysiological mechanisms in the reproductive toxicity induced by METH.

16.
Front Microbiol ; 15: 1377392, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38881665

RESUMO

Background: Numerous studies have established that alterations in the gut microbiota (GM) constitute an embedded mechanism in functional dyspepsia (FD). However, the specific GM taxa implicated in the pathological process of FD have remained unclear. Methods: A two-sample Mendelian randomization analysis was initially conducted to examine the causal relationships between GM and FD, utilizing GWAS data from the MiBioGen Consortium (18,340 cases) and FinnGenn (8,875 cases vs. 320,387 controls). The MR study primarily employed the inverse-variance weighted (IVW) method. Sensitivity analyses were performed to test for heterogeneity and pleiotropy. Single-nucleotide polymorphisms of causal GM taxa were mapped to genes, which were subsequently assessed for causal relationships with FD employing the same methodology. Results: IVW results revealed that the genus Clostridium innocuum group (OR: 1.12, 95% CI: 1.02-1.24, P = 0.020) and genus Ruminiclostridium 9 were positively associated with FD risk (OR: 1.27, 95% CI: 1.03-1.57, P = 0.028), while the genus Lachnospiraceae FCS020 group tended to exert a negative effect on FD risk (OR = 0.84, 95% CI: 0.73-0.98, P = 0.023). Among GM-related genes, a notable association was observed between RSRC1 and increased FD risk (OR = 1.13, 95% CI: 1.07-1.20, P < 0.001). In sensitivity analyses, no significant pleiotropy or heterogeneity of the results was found. Conclusions: This study furnished evidence for distinct effects of specific GM taxa on FD risk and hinted at a potential biological mechanism, thereby offering theoretical underpinning for future microbiotherapy of FD.

17.
Am J Rhinol Allergy ; 38(5): 324-332, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38881270

RESUMO

BACKGROUND: Subtypes of sinusitis have different symptoms and prognoses due to different pathogens. Odontogenic maxillary sinusitis (OMS) mainly occurs unilaterally and is different from chronic rhinosinusitis (CRS) usually occurring bilaterally in terms of clinical characteristics. However, comprehensive microbiological comparisons between OMS and CRS have never been systematically conducted and most comparisons are methodologically biased. This study aims to provide a comprehensive analysis of the microbiology associated with OMS and CRS through a meta-analysis approach in order to provide evidence for differential diagnosis of OMS and CRS from a microbiological perspective. METHODS: The databases PubMed and CNKI were searched from their inception to July 2023. A random-effects model was employed to derive the pooled prevalence estimates of the identified bacterial species or genera. RESULTS: The 17 represented studies included 6 concerning OMS, 12 concerning CRS, and 4 concerning normal sinus, yielding 191, 610, and 92 samples, respectively. Though not statistically significant, the prevalence of Peptostreptococcus and Prevotella was generally higher in OMS compared to CRS. Notably, Fusobacterium was identified as the only genus with a significantly higher prevalence in OMS compared to CRS. CONCLUSION: Fusobacterium was significantly more prevalent in OMS compared with CRS, while Staphylococcus aureus was more prevalent in CRS than in OMS. Such differences in bacterial profile may partly explain the distinct pathology observed and contribute to the development of novel strategies for diagnosis and therapeutic interventions in OMS.


Assuntos
Sinusite Maxilar , Rinite , Humanos , Doença Crônica , Rinite/microbiologia , Rinite/epidemiologia , Sinusite Maxilar/microbiologia , Sinusite Maxilar/epidemiologia , Prevalência , Sinusite/microbiologia , Sinusite/epidemiologia , Rinossinusite
18.
Sensors (Basel) ; 24(10)2024 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-38794035

RESUMO

When resource demand increases and decreases rapidly, container clusters in the cloud environment need to respond to the number of containers in a timely manner to ensure service quality. Resource load prediction is a prominent challenge issue with the widespread adoption of cloud computing. A novel cloud computing load prediction method has been proposed, the Double-channel residual Self-attention Temporal convolutional Network with Weight adaptive updating (DSTNW), in order to make the response of the container cluster more rapid and accurate. A Double-channel Temporal Convolution Network model (DTN) has been developed to capture long-term sequence dependencies and enhance feature extraction capabilities when the model handles long load sequences. Double-channel dilated causal convolution has been adopted to replace the single-channel dilated causal convolution in the DTN. A residual temporal self-attention mechanism (SM) has been proposed to improve the performance of the network and focus on features with significant contributions from the DTN. DTN and SM jointly constitute a dual-channel residual self-attention temporal convolutional network (DSTN). In addition, by evaluating the accuracy aspects of single and stacked DSTNs, an adaptive weight strategy has been proposed to assign corresponding weights for the single and stacked DSTNs, respectively. The experimental results highlight that the developed method has outstanding prediction performance for cloud computing in comparison with some state-of-the-art methods. The proposed method achieved an average improvement of 24.16% and 30.48% on the Container dataset and Google dataset, respectively.

19.
Sci Total Environ ; 935: 173343, 2024 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-38777069

RESUMO

Niche convergence or conservatism have been proposed as essential mechanisms underlying elevational plant community assembly in tropical mountain ecosystems. Subtropical mountains, compared to tropical mountains, are likely to be shaped by a mixing of different geographic affinities of species and remain somehow unclear. Here, we used 31 0.1-ha permanent plots distributed in subtropical forests on the eastern and western aspects of the Gaoligong Mountains, southwest China between 1498 m and 3204 m a.sl. to evaluate how niche-based and biogeographic processes shape tree community assembly along elevational gradients. We analyzed the elevational patterns of taxonomic, phylogenetic and functional diversity, as well as of individual traits, and assessed the relative importance of environmental effects on these diversity measures. We then classified tree species as being either tropical affiliated or temperate affiliated and estimated their contribution to the composition of biogeographic affinities. Species richness decreased with elevation, and species composition showed apparent turnover across the aspects and elevations. Most traits exhibited convergent patterns across the entire elevational gradient. Phylogenetic and functional diversity showed opposing patterns, with phylogenetic diversity increasing and functional diversity decreasing with elevation. Soil nutrients, especially phosphorus and nitrogen, appeared to be the main abiotic variables driving the elevational diversity patterns. Communities at lower elevations were occupied by tropical genera, while highlands contained species of tropical and temperate biogeographic affinities. Moreover, the high phylogenetic diversity at high elevations were likely due to differences in evolutionary history between temperate and tropical species. Our results highlight the importance of niche convergence of tropical species and the legacy of biogeographic history on the composition and structure of subtropical mountain forests. Furthermore, limited soil phosphorus caused traits divergence and the partitioning for different forms of phosphorus may explain the high biodiversity found in phosphorus-limited subtropical forests.


Assuntos
Altitude , Biodiversidade , Florestas , Árvores , China , Filogenia , Ecossistema , Clima Tropical
20.
Heliyon ; 10(9): e30462, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38720745

RESUMO

Methamphetamine is a potent and highly addictive neurotoxic psychostimulant that triggers a spectrum of adverse emotional responses during withdrawal. G-protein coupled receptor 55 (GPR55), a novel endocannabinoid receptor, is closely associated with mood regulation. Herein, we developed a murine model of methamphetamine-induced anxiety- and depressive-like behavior during abstinence which showed a decreased GPR55 expression in the hippocampus. Activation of GPR55 mitigated these behavioral symptoms, concomitantly ameliorating impairments in hippocampal neurogenesis and reducing neuroinflammation. These findings underscore the pivotal role of GPR55 in mediating the neuropsychological consequences of methamphetamine withdrawal, potentially via mechanisms involving the modulation of hippocampal neurogenesis and inflammation.

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