Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 282
Filtrar
1.
J Cancer ; 15(17): 5762-5772, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39308691

RESUMO

Secretory carrier-associated membrane protein 1 (SCAMP1) is the most universally expressed member of the SCAMP family, and its ability to facilitate endocytosis was demonstrated approximately two decades ago. Nevertheless, its roles in cancer biology are largely unknown, although its expression is significantly increased in most cancer types. Herein, we examined the expression of SCAMP1 in gastric cancer (GC) tissues and found that it was aberrantly increased and positively correlated with tumor size and lymph node metastasis. More importantly, increased SCAMP1 expression was associated with poor prognosis in patients with GC. Functional experiments demonstrated that SCAMP1 knockdown markedly suppressed the proliferation of GC cells in vitro and in vivo. RNA sequencing assays demonstrated that SCAMP1 knockdown altered the expression profile of GC cells, and a significant portion of the altered genes were enriched in receptor tyrosine kinases and their related downstream signaling pathways. Immunoblotting confirmed that the Akt/MAPK/Stat signaling pathway was strongly attenuated in GC cells with SCAMP1 depletion. Taken together, these results demonstrated that SCAMP1 drives hyperproliferation in GC cells, thus suggesting that further investigation into the mechanisms and translational value of SCAMP1 in treating patients with GC is warranted.

2.
Cell Signal ; 123: 111357, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-39173858

RESUMO

Metastasis is a major cause of death in patients with lung cancer (LC). microRNA-611 (miR-611), a miRNA, has been little studied in cancer. Here, we aimed to further elucidate the roles of miR-611 in epithelial-mesenchymal transition (EMT) and migration induced by transforming growth factor-ß (TGF-ß) in LC cells and the possible underlying mechanisms. miR-611 and MAPKAP1 expression was first identified in LC tissues from metastatic and nonmetastatic patients, and their expression was associated with overall survival. Gain- and loss-of-function experiments were performed to verify the impacts of miR-611 and MAPKAP1 on pAKT expression, EMT, and migration in LC cells treated with TGF-ß. The interaction between miR-611 and MAPKAP1 was also determined with a luciferase reporter assay. In our study, miR-611 was expressed at low levels, and MAPKAP1 was highly expressed in LC tissues, which was associated with metastasis and short overall survival. Functionally, miR-611 inhibition or MAPKAP1 overexpression accelerated EMT and migration and upregulated pAKT in TGF-ß-treated A549 and H1299 cells; miR-611 overexpression or MAPKAP1 silencing exerted the opposite effects as miR-611 inhibition or MAPKAP1 overexpression. Mechanistically, miR-611 could target and downregulate MAPKAP1. MAPKAP1 expression was also negatively correlated with miR-611 expression in LC tissues. In addition, miR-611 overexpression reduced the EMT and migration of TGF-ß-treated A549 and H1299 cells by targeting MAPKAP1. In conclusion, miR-611 overexpression attenuated EMT and migration by targeting MAPKAP1 in TGF-ß-induced LC cells, indicating that miR-611 is a biological target for LC treatment.


Assuntos
Movimento Celular , Transição Epitelial-Mesenquimal , Regulação Neoplásica da Expressão Gênica , Neoplasias Pulmonares , MicroRNAs , Fator de Crescimento Transformador beta , Humanos , MicroRNAs/metabolismo , MicroRNAs/genética , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/genética , Fator de Crescimento Transformador beta/metabolismo , Fator de Crescimento Transformador beta/farmacologia , Feminino , Linhagem Celular Tumoral , Masculino , Células A549 , Pessoa de Meia-Idade , Proteínas Proto-Oncogênicas c-akt/metabolismo
3.
J Med Chem ; 67(16): 13778-13787, 2024 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-39134504

RESUMO

Metal-based chemoimmunotherapy has recently garnered significant attention for its capacity to stimulate tumor-specific immunity beyond direct cytotoxic effects. Such effects are usually caused by ICD via the activation of DAMP signals. However, metal complexes that can elicit antitumor immune responses other than ICD have not yet been described. Herein, we report that a rhodium complex (Rh-1) triggers potent antitumor immune responses by downregulating Wnt/ß-catenin signaling with subsequent activation of T lymphocyte infiltration to the tumor site. The results of mechanistic experiments suggest that ROS accumulation following Rh-1 treatment is a critical trigger of a decrease in ß-catenin and enhanced secretion of CCL4, a key mediator of T cell infiltration. Through these properties, Rh-1 exerts a synergistic effect in combination with PD-1 inhibitors against tumor growth in vivo. Taken together, our work describes a promising metal-based antitumor agent with a noncanonical mode of action to sensitize tumor tissues to ICB therapy.


Assuntos
Antineoplásicos , Ródio , Via de Sinalização Wnt , Ródio/química , Ródio/farmacologia , Animais , Via de Sinalização Wnt/efeitos dos fármacos , Antineoplásicos/farmacologia , Antineoplásicos/química , Humanos , Camundongos , beta Catenina/metabolismo , Complexos de Coordenação/farmacologia , Complexos de Coordenação/química , Complexos de Coordenação/uso terapêutico , Linhagem Celular Tumoral , Espécies Reativas de Oxigênio/metabolismo , Camundongos Endogâmicos C57BL
4.
Front Neurol ; 15: 1458184, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39206288

RESUMO

Background: A number of studies have explored the link between neurodegenerative disorders (NDDs) and albumin, the main protein in human plasma. However, the results have been inconsistent, highlighting the necessity for a detailed systemic analysis. Methods: Utilizing data from the United Kingdom Biobank, we investigated the relationship between baseline levels of serum and urine albumin and the occurrence of common NDDs, including Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS) and dementia, employing Cox proportional hazards regression analysis. Results: Our results reveal that elevated baseline serum albumin levels are linked to a decreased risk of developing dementia (beta = -0.024, SE = 0.004, p < 0.001). Subgroup and interaction analyses highlighted the impact of factors like body mass index (BMI), age, and alcohol consumption on this relationship. Specifically, participants with higher BMI, younger age, or lower alcohol intake exhibited a stronger protective effect. On the other hand, a higher baseline level of urine microalbumin was connected to a slight increase in dementia risk (beta = 0.003, SE = 3.30E-04, p < 0.001). No significant associations were found between albumin levels and the risk of PD or ALS. Conclusion: Our study underscores the potential role of serum albumin as a biomarker associated with reduced dementia risk. These findings contribute valuable insights into the understanding of albumin's impact on NDDs, suggesting its utility as a biomarker for dementia in clinical settings and informing future therapeutic strategies in clinical trials.

5.
World J Gastrointest Oncol ; 16(6): 2865-2866, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38994163

RESUMO

[This retracts the article on p. 1531 in vol. 15, PMID: 37746647.].

6.
J Natl Cancer Cent ; 4(1): 1-5, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39036383
7.
Neurosci Res ; 2024 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-39025266

RESUMO

Our previous studies have reported that hydrogen sulfide (H2S) has ability to improve diabetes-associated cognitive dysfunction (DACD), but the exact mechanisms remain unknown. Recent research reveals that Warburg effect is associated with synaptic plasticity which plays a key role in cognition promotion. Herein, the present study was aimed to demonstrate whether hippocampal Warburg effect contributes to H2S-ameliorated DACD and further explore its potential mechanism. We found that H2S promoted the hippocampal Warburg effect and inhibited the OxPhos in the hippocampus of STZ-induced diabetic rats. It also improved the hippocampal synaptic plasticity in STZ-induced diabetic rats, as evidenced by the change of microstructures and the expression of different key-enzymes. Furthermore, inhibited hippocampal Warburg effect induced by DCA markedly abolished the improvement of H2S on synaptic plasticity in the hippocampus of STZ-induced diabetic rats. DCA blocked H2S-attenuated the cognitive dysfunction in STZ-induced diabetic rats, according to the Y-maze, Novel Objective Recognition, and Morris Water Maze tests. Collectively, these findings indicated that the hippocampal Warburg effect mediates H2S-ameliorated DACD by improving hippocampal synaptic plasticity.

8.
Proc Natl Acad Sci U S A ; 121(24): e2404668121, 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38833473

RESUMO

Developing anticancer drugs with low side effects is an ongoing challenge. Immunogenic cell death (ICD) has received extensive attention as a potential synergistic modality for cancer immunotherapy. However, only a limited set of drugs or treatment modalities can trigger an ICD response and none of them have cytotoxic selectivity. This provides an incentive to explore strategies that might provide more effective ICD inducers free of adverse side effects. Here, we report a metal-based complex (Cu-1) that disrupts cellular redox homeostasis and effectively stimulates an antitumor immune response with high cytotoxic specificity. Upon entering tumor cells, this Cu(II) complex enhances the production of intracellular radical oxidative species while concurrently depleting glutathione (GSH). As the result of heightening cellular oxidative stress, Cu-1 gives rise to a relatively high cytotoxicity to cancer cells, whereas normal cells with low levels of GSH are relatively unaffected. The present Cu(II) complex initiates a potent ferroptosis-dependent ICD response and effectively inhibits in vivo tumor growth in an animal model (c57BL/6 mice challenged with colorectal cancer). This study presents a strategy to develop metal-based drugs that could synergistically potentiate cytotoxic selectivity and promote apoptosis-independent ICD responses through perturbations in redox homeostasis.


Assuntos
Cobre , Glutationa , Homeostase , Oxirredução , Animais , Camundongos , Humanos , Glutationa/metabolismo , Camundongos Endogâmicos C57BL , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Estresse Oxidativo/efeitos dos fármacos , Sinergismo Farmacológico , Morte Celular Imunogênica/efeitos dos fármacos , Complexos de Coordenação/farmacologia , Complexos de Coordenação/química , Ferroptose/efeitos dos fármacos , Espécies Reativas de Oxigênio/metabolismo , Neoplasias Colorretais/imunologia , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/patologia , Neoplasias Colorretais/metabolismo
9.
Heliyon ; 10(11): e32291, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38882287

RESUMO

Background: Epidermal growth factor-like repeats and discoidin I-like domains 3 (EDIL3) is a secreted extracellular matrix protein implicated in diverse physiological and pathological processes including embryonic development, angiogenesis, and anti-inflammatory responses. Recent reports have indicated that EDIL3 play critical roles in carcinogenesis and progression of many cancers. Herein, we performed a pan-cancer investigation to study the potential functions of EDIL3 in various cancers and experimentally validate its function in gastric cancer (GC). Methods: We analysed EDIL3 expression profiles in different tumours using The Cancer Genome Atlas database. The Kaplan-Meier Plotter was used to investigate the prognostic value of EDIL3, while receiver operating characteristic curve was performed to analyze its diagnostic efficacy. Several bioinformatics tools were used to study the association between EDIL3 and promoter methylation, gene enrichment analysis, immune infiltration, immune-related genes, and drug sensitivity. Molecular biology experiments were conducted to validate the tumorigenic effects of EDIL3. Results: EDIL3 is variably expressed in different cancers and is closely associated with clinical outcomes. An inverse correlation between EDIL3 and DNA methylation has been observed in 13 cancers. Enrichment analysis indicated that EDIL3 is correlated with many cellular pathways such as extracellular matrix receptor interactions and focal adhesion. EDIL3 was tightly associated with immune infiltration and immune checkpoints. EDIL3 knockdown can promote GC calls apoptosis while preventing proliferation, migration, and invasion in vitro. Conclusion: EDIL3 is a promising prognostic, diagnostic, and immunological biomarker in various cancers, which could be applied as a new target for cancer therapy.

10.
Front Public Health ; 12: 1351884, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38883189

RESUMO

Objective: This study aimed to investigate the correlation between the triglyceride-glucose (TyG) index and the incidence of cholelithiasis. Research approach: In this investigation, a cross-sectional analysis was undertaken utilizing data from the US National Health and Nutrition Examination Survey (NHANES) spanning the years 2017 to 2020. The TyG index served as an independent predictor, while gallstone prevalence was considered the dependent variable of interest. We employed a multivariate logistic regression model to evaluate the interplay between these independent and dependent variables. To assess the presence of potential non-linear associations, sensitivity analysis was executed, utilizing inverse probability weighted validation, smooth curve fitting, and threshold effect analysis. In cases where non-linear relationships were observed, likelihood ratios were utilized to pinpoint potential inflection points. Ultimately, subgroup analyses were conducted to identify specific populations demonstrating heightened susceptibility to gallstone prevalence. Results: Encompassing 838 patients who self-reported gallstones, a total of 7,794 participants were included in the analytical cohort. A statistically significant disparity in the TyG index was observed when all individuals were categorized into gallstone patients and non-patients (p < 0.05). Logistic regression findings indicated a positive correlation between the TyG index and gallstone disease prevalence (OR = 1.28, 95% CI: 1.12, 1.47), with a strengthening association as the TyG index increased (p trend <0.01). The results were corroborated by the use of inverse probability weighting. Additionally, a non-linear connection between the TyG index and gallstone prevalence was identified (log-likelihood ratio p < 0.01), with the optimal inflection point for TyG calculated at 8.96. In subgroup analysis, the positive relationship between the TyG index and gallstone prevalence was notably pronounced among black Americans under the age of 40 and female participants. Conclusion: Alterations in the TyG index may potentially correlate with shifts in the prevalence of gallstones among adult populations in the United States. Elevated TyG index values may coincide with an augmented likelihood of gallstone occurrence.


Assuntos
Glicemia , Cálculos Biliares , Inquéritos Nutricionais , Triglicerídeos , Humanos , Estudos Transversais , Feminino , Estados Unidos/epidemiologia , Masculino , Cálculos Biliares/epidemiologia , Cálculos Biliares/sangue , Prevalência , Pessoa de Meia-Idade , Triglicerídeos/sangue , Adulto , Glicemia/análise , Idoso , Modelos Logísticos , Fatores de Risco
11.
Drug Des Devel Ther ; 18: 1115-1131, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38618280

RESUMO

Background: The ChaiShao Shugan Formula (CSSGF) is a traditional Chinese medicine formula with recently identified therapeutic value in triple-negative breast cancer (TNBC). This study aimed to elucidate the underlying mechanism of CSSGF in TNBC treatment. Methods: TNBC targets were analyzed using R and data were from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. The major ingredients and related protein targets of CSSGF were explored via the Traditional Chinese Medicine Systems Pharmacology database, and an ingredient-target network was constructed via Cytoscape to identify hub genes. The STRING database was used to construct the PPI network. GO and KEGG enrichment analyses were performed via R to obtain the main targets. The online tool Kaplan‒Meier plotter was used to identify the prognostic genes. Molecular docking was applied to the core target genes and active ingredients. MDA-MB-231 and MCF-7 cell lines were used to verify the efficacy of the various drugs. Results: A total of 4562 genes were screened as TNBC target genes. The PPI network consisted of 89 nodes and 845 edges. Our study indicated that quercetin, beta-sitosterol, luteolin and catechin might be the core ingredients of CSSGF, and EGFR and c-Myc might be the latent therapeutic targets of CSSGF in the treatment of TNBC. GO and KEGG analyses indicated that the anticancer effect of CSSGF on TNBC was mainly associated with DNA binding, transcription factor binding, and other biological processes. The related signaling pathways mainly involved the TNF-a, IL-17, and apoptosis pathways. The molecular docking data indicated that quercetin, beta-sitosterol, luteolin, and catechin had high affinity for EGFR, JUN, Caspase-3 and ESR1, respectively. In vitro, we found that CSSGF could suppress the expression of c-Myc or promote the expression of EGFR. In addition, we found that quercetin downregulates c-Myc expression in two BC cell lines. Conclusion: This study revealed the effective ingredients and latent molecular mechanism of action of CSSGF against TNBC and confirmed that quercetin could target c-Myc to induce anti-BC effects.


Assuntos
Catequina , Neoplasias de Mama Triplo Negativas , Humanos , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/genética , Luteolina , Simulação de Acoplamento Molecular , Quercetina , Células MCF-7 , Receptores ErbB/genética
12.
Plant Dis ; 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38568794

RESUMO

Green-stem forsythia (Forsythia viridissima), also known as golden bell, is cultivated widely in China as an early spring flowering shrub. In July 2020, yellow or white vein clearing symptoms on leaves were observed in approximate 15% golden bell plants along a landscape river in Ningbo city, Zhejiang province, China. Symptomatic leaves from six different plants were collected and pooled. Total RNA was extracted from about 200 mg pooled sample using TRIzol Reagent (Invitrogen, Carlsbad, USA) and used for high-throughput sequencing (HTS). The cDNA library was constructed using a TruSeq RNA Sample Preparation Kit (Illumina) and an Illumina NovaSeq 6000 platform was utilized to yield 150 nt paired-end reads. CLC Genomic Workbench 11 (QIAGEN) with default parameters were used for data analysis. A total of 41,604,174 paired-end reads were obtained, and 156,853 contigs (16 - 26,665 nt) were generated de novo and compared with sequences in the NCBI nt and nr database using BLASTn and BLASTx, respectively. A total of 197,277 reads were mapped to the citrus leaf blotch virus (CLBV; genus Citrivirus, family Betaflexiviridae) genome with an average coverage of 3191×. A contig of 8783 nt (excluding the poly(A) tail) was aligned to CLBV isolate Vib (accession No. OP751940) by BLASTn with the highest nt sequence identity of 99.7% and 99% query coverage, suggesting that the samples were infected with CLBV (Myung-Hwi Kim et al. 2023). No other virus was detected by this analysis. Subsequently, leaves of the six plants collected above, three plants with mild chlorotic symptoms and three plants without obvious symptoms were tested separately by RT-PCR and all were positive for CLBV. Sap from multiple symptomatic F. viridissima leaves was mechanically inoculated to Nicotiana benthamiana, N. tabacum and Datura stramonium in sextuplicate, but after two months, none of the inoculated plants had obvious symptoms and all of them tested negative for CLBV using RT-PCR. To determine the genome sequence of CLBV present in F. viridissima, a single sample from one plant was selected for genome validtion. The contig sequence was confirmed by Sanger sequencing of RT-PCR products amplified using CLBV-specific primers, and the 5' terminal sequence of the virus was determined using a commercial SUPERSWITCH RACE cDNA Synthesis Kit (Tiosbio, Beijing, China). The complete genomic sequence of CLBV isolated from F. viridissima was 8787 nts long, excluding the poly(A) tail, has the expected three predicted ORFs and was deposited in the GenBank database (accession no. OR766026). Phylogenetic analysis of different CLBV genome sequences from fruit trees and other hosts in GenBank using MEGA11 showed that the golden bell isolate was most closely related to isolate Vib (OP751940) from Viburnum lentago in South Korea, with which it was almost identical (99.7% complete nt sequence identity and >99% aa sequence identity in each of the three ORFs). Ten viruses have been previously reported from Forsythia spp. (Kaminska, M. 1985; Lee et al. 1997), but this is the first report of CLBV in this host. CLBV mainly infects citrus, kiwifruit and apple causing mosaic, chlorosis or yellow vein clearing symptoms, however, bud union disorder was observed in 'Nagami' kumquat infected by CLBV, which caused serious production losses (Cao et al. 2017; Li et al. 2018; Liu et al. 2019; Galipienso et al. 2001). Therefore, further investigation is needed to assess if F. viridissima can be an intermediate host to transfer CLBV to other crops.

13.
BMC Oral Health ; 24(1): 418, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38580938

RESUMO

Oral squamous cell carcinoma (OSCC) is the most common head and neck malignancy. The oncometabolites have been studied in OSCC, but the mechanism of metabolic reprogramming remains unclear. To identify the potential metabolic markers to distinguish malignant oral squamous cell carcinoma (OSCC) tissue from adjacent healthy tissue and study the mechanism of metabolic reprogramming in OSCC. We compared the metabolites between cancerous and paracancerous tissues of OSCC patients by 1HNMR analysis. We established OSCC derived cell lines and analyzed their difference of RNA expression by RNA sequencing. We investigated the metabolism of γ-aminobutyrate in OSCC derived cells by real time PCR and western blotting. Our data revealed that much more γ-aminobutyrate was produced in cancerous tissues of OSCC patients. The investigation based on OSCC derived cells showed that the increase of γ-aminobutyrate was promoted by the synthesis of glutamate beyond the mitochondria. In OSCC cancerous tissue derived cells, the glutamate was catalyzed to glutamine by glutamine synthetase (GLUL), and then the generated glutamine was metabolized to glutamate by glutaminase (GLS). Finally, the glutamate produced by glutamate-glutamine-glutamate cycle was converted to γ-aminobutyrate by glutamate decarboxylase 2 (GAD2). Our study is not only benefit for understanding the pathological mechanisms of OSCC, but also has application prospects for the diagnosis of OSCC.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Humanos , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas de Cabeça e Pescoço , Neoplasias Bucais/patologia , Glutamina/genética , Glutamina/metabolismo , Reprogramação Metabólica , Glutamatos/genética , Glutamatos/metabolismo , Linhagem Celular Tumoral
14.
J Med Chem ; 67(8): 6738-6748, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38526421

RESUMO

The development and optimization of metal-based anticancer drugs with novel cytotoxic mechanisms have emerged as key strategies to overcome chemotherapeutic resistance and side effects. Agents that simultaneously induce ferroptosis and autophagic death have received extensive attention as potential modalities for cancer therapy. However, only a limited set of drugs or treatment modalities can synergistically induce ferroptosis and autophagic tumor cell death. In this work, we designed and synthesized four new cycloplatinated (II) complexes harboring an isoquinoline alkaloid C∧N ligand. On screening the in vitro activity of these agents, we found that Pt-3 exhibited greater selectivity of cytotoxicity, decreased resistance factors, and improved anticancer activity compared to cisplatin. Furthermore, Pt-3, which we demonstrate can initiate potent ferritinophagy-dependent ferroptosis, exhibits less toxic and better therapeutic activity than cisplatin in vivo. Our results identify Pt-3 as a promising candidate or paradigm for further drug development in cancer treatment.


Assuntos
Antineoplásicos , Ferroptose , Isoquinolinas , Neoplasias de Mama Triplo Negativas , Ferroptose/efeitos dos fármacos , Humanos , Isoquinolinas/farmacologia , Isoquinolinas/química , Isoquinolinas/síntese química , Antineoplásicos/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/patologia , Neoplasias de Mama Triplo Negativas/metabolismo , Animais , Feminino , Linhagem Celular Tumoral , Ferritinas/metabolismo , Autofagia/efeitos dos fármacos , Camundongos , Complexos de Coordenação/farmacologia , Complexos de Coordenação/química , Complexos de Coordenação/síntese química , Alcaloides/farmacologia , Alcaloides/química , Alcaloides/síntese química , Relação Estrutura-Atividade , Ensaios de Seleção de Medicamentos Antitumorais , Proliferação de Células/efeitos dos fármacos , Camundongos Nus
15.
Brain Behav Immun ; 117: 447-455, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38336023

RESUMO

BACKGROUND: Multiple evidence has suggested the complex interplay between Parkinson's disease (PD) and systemic inflammation marked by C-reactive protein (CRP) and interleukin 6 (IL-6). Nevertheless, the findings across studies have shown inconsistency, and the direction of the effect remains controversial. Here, we aimed to explore the link between CRP and IL-6 and the risk of PD. METHODS: Based on data from the UK Biobank, we investigated the association between baseline CRP and IL-6 and the risk of incident PD with Cox proportional hazards regression analysis. We further performed extensive genetic analyses including genetic correlation, polygenic risk score (PRS), and pleiotropic enrichment based on summary statistics from previous genome-wide association studies. RESULTS: A higher level of CRP at baseline was associated with a lower risk of PD (HR = 0.85, 95 % CI: 0.79-0.90, P = 4.23E-07). The results remained consistent in the subgroup analyses stratified by sex, age and body mass index. From the genetic perspective, a significant negative genetic correlation was identified between CRP and PD risk (correlation: -0.14, P = 6.31E-05). Higher PRS of CRP was associated with a lower risk of PD (P = 0.015, beta = -0.04, SE = 0.017). Moreover, we observed significant pleiotropic enrichment for PD conditional on CRP, and identified 13 risk loci for PD, some of which are implicated in immune functionality and have been linked to PD, including CTSB, HNF4A, PPM1G, ACMSD, and NCOR1. In contrast, no significant association was identified between IL-6 and PD. CONCLUSIONS: Systemic inflammation at baseline measured by CRP level is associated with decreased future risk of PD. These discoveries contribute to a deeper comprehension of the role of inflammation in the risk of PD, and hold implications for the design of therapeutic interventions in clinical trials.


Assuntos
Estudo de Associação Genômica Ampla , Doença de Parkinson , Humanos , Interleucina-6/genética , Doença de Parkinson/genética , Estudos Prospectivos , Inflamação/genética , Proteína C-Reativa , Estratificação de Risco Genético , Proteína Fosfatase 2C
16.
J Hazard Mater ; 467: 133728, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38335619

RESUMO

Cities in Northeast China, e.g., Harbin, were brought to the forefront of air pollution control by a national-level policy promulgated in 2021, i.e., the Circular on Further Promoting the Pollution Prevention and Control Battle (the FP3CB Circular) which aimed at eliminating heavy or severe air pollution events. In this study, we explored the response of Harbin aerosol to the FP3CB Circular, based on observational results from two campaigns conducted during 2020-2021 and 2021-2022. A clear decreasing trend was identified for the impact of domestic biomass burning between the two winters, presumably driven by the clean heating actions. The 2021-2022 winter was also characterized by reduced formation of secondary organic aerosol but enhanced production of nitrate, which could be attributed to the less humid conditions but higher temperatures, respectively, compared to the 2020-2021 winter. The overall effect of these changes was a decrease in the contribution of organic species to wintertime aerosol in Harbin. In addition, the number of heavy or severe pollution days rebounded in the 2021-2022 winter compared to 2020-2021 (5 vs. 3), indicating that the emissions of primary particles and gaseous precursors must be further reduced to achieve the ambitious goals of the FP3CB Circular.

17.
Ann Am Thorac Soc ; 21(3): 393-401, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37962906

RESUMO

Rationale: The relationship between symptoms, measured using a validated disease-specific questionnaire, and longitudinal exacerbation risk has not been demonstrated in bronchiectasis. Objectives: The aim of this study is to investigate whether baseline symptoms, assessed using the Quality-of-Life Bronchiectasis Respiratory Symptom Scale (QoL-B-RSS) and its individual component scores, could predict future exacerbation risk in patients with bronchiectasis. Methods: The study included 436 adults with bronchiectasis from three tertiary hospitals. Symptoms were measured using the QoL-B-RSS, with scores ranging from 0 to 100, where lower scores indicated more severe symptoms. We examined whether symptoms as continuous measures were associated with the risk of exacerbation over 12 months. The analysis was also repeated for individual components of the QoL-B-RSS score. Results: The baseline QoL-B-RSS score was associated with an increased risk of exacerbations (rate ratio, 1.25 for each 10-point decrease; 95% confidence interval [CI], 1.15-1.35; P < 0.001), hospitalizations (rate ratio, 1.24; 95% CI, 1.05-1.43; P = 0.02), and reduced time to the first exacerbation (hazard ratio, 1.12; 95% CI, 1.03-1.21; P = 0.01) over 12 months, even after adjusting for relevant confounders, including exacerbation history. The QoL-B-RSS score was comparable to exacerbation history in its association with future frequent exacerbations (defined as three or more exacerbations per year) and hospitalization (area under the curve, 0.86 vs. 0.84; P = 0.46; and area under the curve, 0.81 vs. 0.83; P = 0.41, respectively). Moreover, patients with more severe symptoms in the majority of individual components of the QoL-B-RSS were more likely to experience exacerbations. Conclusions: Symptoms can serve as useful indicators for identifying patients at increased risk of exacerbation in bronchiectasis. Beyond relying solely on exacerbation history, a comprehensive assessment of symptoms could facilitate timely and cost-effective implementation of interventions for exacerbation prevention.


Assuntos
Bronquiectasia , Qualidade de Vida , Adulto , Humanos , Estudos Prospectivos , Bronquiectasia/complicações , Hospitalização , Centros de Atenção Terciária
19.
Front Endocrinol (Lausanne) ; 14: 1276465, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37964952

RESUMO

Objective: We aimed to assess the association between weight-adjusted waist circumference index (WWI) and gallstone prevalence in US adults. Methods: We selected individuals from the National Health and Nutrition Examination Survey (NHANES) database from 2017 to 2020 and used logistic regression analyses, subgroup analyses, and dose-response curves to assess the association between WWI and gallbladder stone prevalence and age, sex, and ethnicity. Results: A total of 7971 participants aged ≥20 years were enrolled in our study; 828 patients had a self-reported history of gallstones. After correcting for confounders, for each unit of WWI after Ln conversion, the prevalence of gallbladder stones increased by 34% (OR=1.34, 95% CI:1.20, 1.50). Dose-response curves showed a positive correlation between WWI and gallbladder stone prevalence.According to the subgroup analysis, the positive association between TyG index and high-frequency HI was more significant in males(OR=1.34, 95% CI:1.07, 1.69), <40 years old(OR=1.42, 95% CI:1.18, 1.71), white people Americans(OR=1.35, 95% CI:1.08, 1.68) and other races(OR= 1.56, 95% CI:1.13, 2.14). Conclusion: Higher WWI was positively associated with the prevalence of gallbladder stones and was associated with gender, age, and ethnicity. This is noteworthy, although a causal relationship could not be established.


Assuntos
Cálculos Biliares , Adulto , Masculino , Humanos , Cálculos Biliares/epidemiologia , Inquéritos Nutricionais , Prevalência , Circunferência da Cintura , Bases de Dados Factuais
20.
Arch Virol ; 168(11): 281, 2023 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-37889350

RESUMO

A novel mitovirus was detected in taro (Colocasia esculenta) growing in Ningbo, China. The complete genome sequence of Colocasia esculenta associated mitovirus 1 (CeaMV1) was determined by next-generation sequencing combined with RT-PCR and RACE. The genome is 2921 nucleotides long and contains a single ORF encoding a putative RNA-dependent RNA polymerase. Homology searches and phylogenetic analysis suggested that CeaMV1 is a member of a new species in the genus Duamitovirus. This is the first report of a member of the family Mitoviridae associated with taro.


Assuntos
Colocasia , Vírus de RNA , Filogenia , Genoma Viral , Vírus de RNA/genética , RNA Polimerase Dependente de RNA/genética
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA