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1.
PLoS Genet ; 20(2): e1011163, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38377137

RESUMO

Neonicotinoid insecticides, which target insect nicotinic acetylcholine receptors (nAChRs), have been widely and intensively used to control the whitefly, Bemisia tabaci, a highly damaging, globally distributed, crop pest. This has inevitably led to the emergence of populations with resistance to neonicotinoids. However, to date, there have been no reports of target-site resistance involving mutation of B. tabaci nAChR genes. Here we characterize the nAChR subunit gene family of B. tabaci and identify dual mutations (A58T&R79E) in one of these genes (BTß1) that confer resistance to multiple neonicotinoids. Transgenic D. melanogaster, where the native nAChR Dß1 was replaced with BTß1A58T&R79E, were significantly more resistant to neonicotinoids than flies where Dß1 were replaced with the wildtype BTß1 sequence, demonstrating the causal role of the mutations in resistance. The two mutations identified in this study replace two amino acids that are highly conserved in >200 insect species. Three-dimensional modelling suggests a molecular mechanism for this resistance, whereby A58T forms a hydrogen bond with the R79E side chain, which positions its negatively-charged carboxylate group to electrostatically repulse a neonicotinoid at the orthosteric site. Together these findings describe the first case of target-site resistance to neonicotinoids in B. tabaci and provide insight into the molecular determinants of neonicotinoid binding and selectivity.


Assuntos
Hemípteros , Inseticidas , Receptores Nicotínicos , Animais , Receptores Nicotínicos/genética , Inseticidas/farmacologia , Hemípteros/genética , Drosophila melanogaster , Neonicotinoides/farmacologia , Mutação
2.
Small ; 20(1): e2305119, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37653595

RESUMO

Rampant dendrite growth, electrode passivation and severe corrosion originate from the uncontrolled ions migration behavior of Zn2+ , SO4 2- , and H+ , which are largely compromising the aqueous zinc ion batteries (AZIBs) performance. Exploring the ultimate strategy to eliminate all the Zn anode issues is challenging but urgent at present. Herein, a fluorinated separator interface (PVDF@GF) is constructed simply by grafting the polyvinylidene difluoride (PVDF) on the GF surface to realize high-performance AZIBs. Experimental and theoretical studies reveal that the strong interaction between C─F bonds in the PVDF and Zn2+ ions enables evenly redistributed Zn2+ ions concentration at the electrode interface and accelerates the Zn transportation kinetics, leading to homogeneous and fast Zn deposition. Furthermore, the electronegative separator interface can spontaneously repel the SO4 2- and anchor H+ ions to alleviate the passivation and corrosion. Accordingly, the Zn|Zn symmetric cell with PVDF@GF harvests a superior cycling stability of 500 h at 10 mAh cm-2 , and the Zn|VOX full cell delivers 76.8% capacity retention after 1000 cycles at 2 A g-1 . This work offers an all-round solution and provides new insights for the design of advanced separators with ionic sieve function toward stable and reversible Zn metal anode chemistry.

3.
Chemistry ; 30(10): e202303461, 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38050714

RESUMO

With the increasing demand for low-cost and high-safety portable batteries, aqueous zinc-ion batteries (ZIBs) have been regarded as a potential alternative to the lithium-ion batteries, bringing about extensive research dedicated in the exploration of high-performance and highly reversible ZIBs. Although separators are generally considered as non-active components in conventional research on ZIBs, advanced separators designs seem to offer effective solutions to the majority of issues within ZIBs system. These issues encompass concerns related to the zinc anode, cathode, and electrolyte. Initially, we delve into the origins and implications of various inherent problems within the ZIBs system. Subsequently, we present the latest research advancements in addressing these challenges through separators engineering. This includes a comprehensive, detailed exploration of various strategies, coupled with instances of advanced characterizations to provide a more profound insight into the mechanisms that influence the separators. Finally, we undertake a multi-criteria evaluation, based on application standards for diverse substrate separators, while proposing guiding principles for the optimal design of separators in zinc batteries. This review aims to furnish valuable guidance for the future development of advanced separators, thereby nurturing progress in the field of ZIBs.

4.
Inorg Chem ; 63(15): 6714-6722, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38557020

RESUMO

Converting CO2 into valuable chemicals via sustainable energy sources is indispensable for human development. Photothermal catalysis combines the high selectivity of photocatalysis and the high yield of thermal catalysis, which is promising for CO2 reduction. However, the present photothermal catalysts suffer from low activity due to their poor light absorption ability and fast recombination of photogenerated electrons and holes. Here, a TiO2@Bi2WO6 heterojunction photocatalyst featuring a hierarchical hollow structure was prepared by an in situ growth method. The visible light absorption and photothermal effect of the TiO2@Bi2WO6 photocatalyst is promoted by a hierarchical hollow structure, while the recombination phenomenon is significantly mitigated due to the construction of the heterojunction interface and the existence of excited Bi(3-x)+ sites. Such a catalyst exhibits excellent photothermal performance with a CO yield of 43.7 µmol h-1 g-1, which is 15 and 4.7 times higher than that of pure Bi2WO6 and that of physically mixed TiO2/Bi2WO6, respectively. An in situ study shows that the pathway for the transformation of CO2 into CO over our TiO2@Bi2WO6 proceeds via two important intermediates, including COO- and COOH-. Our work provides a new idea of excited states for the design and synthesis of highly efficient photothermal catalysts for CO2 conversion.

5.
Pestic Biochem Physiol ; 201: 105863, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38685216

RESUMO

The whitefly Bemisia tabaci poses a significant threat to various crops and ornamental plants and causes severe damage to the agricultural industry. Over the past few decades, B. tabaci has developed resistance to several pesticides, including imidacloprid. Therefore, elucidating the mechanism that leads to insecticide detoxification is very important for controlling B. tabaci and managing whitefly resistance to neonicotinoid insecticides. Among insect detoxification enzymes, glutathione S-transferase (GST) is an important phase II detoxification enzyme that helps detoxify exogenous toxic substances. In this study, we cloned the BtGSTz1 gene and observed that its expression level was greater in imidacloprid-resistant populations than sensitive populations of B. tabaci. By silencing BtGSTz1 via RNA interference, we found a significant increase in the mortality of imidacloprid-resistant B. tabaci. Additionally, prokaryotic expression and in vitro metabolism studies revealed that the recombinant BtGSTz1 protein could metabolize 36.36% of the total imidacloprid, providing direct evidence that BtGSTz1 plays a crucial role in the detoxification of imidacloprid. Overall, our study elucidated the role of GSTs in physiological activities related to insecticide resistance, which helps clarify the resistance mechanisms conferred by GSTs and provides useful insights for sustainable integrated pest management.


Assuntos
Glutationa Transferase , Hemípteros , Resistência a Inseticidas , Inseticidas , Neonicotinoides , Nitrocompostos , Hemípteros/efeitos dos fármacos , Hemípteros/genética , Hemípteros/metabolismo , Animais , Neonicotinoides/farmacologia , Neonicotinoides/metabolismo , Nitrocompostos/farmacologia , Nitrocompostos/metabolismo , Glutationa Transferase/metabolismo , Glutationa Transferase/genética , Inseticidas/farmacologia , Inseticidas/metabolismo , Resistência a Inseticidas/genética , Proteínas de Insetos/metabolismo , Proteínas de Insetos/genética , Interferência de RNA , Imidazóis/farmacologia , Imidazóis/metabolismo
6.
Heart Lung Circ ; 2024 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-38876846

RESUMO

BACKGROUND: Occurrence of chronic thromboembolic disease (CTED) after 3 or 6 months of standard and effective anticoagulation is not uncommon in patients with acute pulmonary embolism (PE). To date, there has been no scoring model for the prediction of CTED occurrence. METHODS: A Prediction Rule for CTED (PRC) was established in the establishment cohort (n=1,124) and then validated in the validation cohort (n=211). Both original and simplified versions of the PRC score were provided by using different scoring and cut-offs. RESULTS: The PRC score included 10 items: active cancer (3.641; 2.338-4.944; p<0.001), autoimmune diseases (2.218; 1.545-2.891; p=0.001), body mass index >30 kg/m2 (2.186; 1.573-2.799; p=0.001), chronic immobility (2.135; 1.741-2.529; p=0.001), D-dimer >2,000 ng/mL (1.618; 1.274-1.962; p=0.005), PE with deep vein thrombosis (3.199; 2.356-4.042; p<0.001), previous venous thromboembolism (VTE) history (5.268; 3.472-7.064; p<0.001), thromboembolism besides VTE (4.954; 3.150-6.758; p<0.001), thrombophilia (3.438; 2.573-4.303; p<0.001), and unprovoked VTE (2.227; 1.471-2.983; p=0.001). In the establishment cohort, the sensitivity, specificity, Youden index (YI), and C-index were 85.5%, 79.7%, 0.652, and 0.821 (0.732-0.909) when using the original PRC score, whereas they were 87.9%, 74.6%, 0.625, and 0.807 (0.718-0.897) when using the simplified one, respectively (Kappa coefficient 0.819, p-value of McNemar's test 0.786). In the validation cohort, the sensitivity, specificity, YI, and C-index were 86.3%, 76.3%, 0.626, and 0.815 (0.707-0.923) when using the original PRC score, whereas they were 85.0%, 78.6%, 0.636, and 0.818 (0.725-0.911) when using the simplified one, respectively (Kappa coefficient 0.912, p-value of McNemar's test 0.937); both were better than that of the DASH score (72.5%, 69.5%, 0.420, and 0.621 [0.532-0.710]). CONCLUSIONS: A prediction score for CTED occurrence, termed PRC, predicted the likelihood of CTED occurrence after 3 or 6 months of standard anticoagulation in hospitalised patients with a diagnosis of acute PE.

7.
Thromb J ; 21(1): 8, 2023 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-36658654

RESUMO

BACKGROUND: The assessment of VTE likelihood with VTE risk scores is essential prior to imaging examinations during VTE diagnostic procedure. Little is known with respect to the disparity of predictive power for VTE diagnosis among VTE risk scores in guidelines for nonsurgical hospitalized patients with clinically suspected VTE. METHODS: A retrospective study was performed to compare the predictive power for VTE diagnosis among the Wells, Geneva, YEARS, PERC, Padua, and IMPROVE scores in the leading authoritative guidelines in nonsurgical hospitalized patients with suspected VTE. RESULTS: Among 3168 nonsurgical hospitalized patients with suspected VTE, VTE was finally excluded in 2733(86.3%) ones, whereas confirmed in 435(13.7%) ones. The sensitivity and specificity resulted from the Wells, Geneva, YEARS, PERC, Padua, and IMPROVE scores were (90.3%, 49.8%), (88.7%, 53.6%), (73.8%, 50.2%), (97.7%,16.9%), (80.9%, 44.0%), and (78.2%, 47.0%), respectively. The YI were 0.401, 0.423, 0.240, 0.146, 0.249, and 0.252 for the Wells, Geneva, YEARS, PERC, Padua, and IMPROVE scores, respectively. The C-index were 0.694(0.626-0.762), 0.697(0.623-0.772), 0.602(0.535-0.669), 0.569(0.486-0.652), 0.607(0.533-0.681), and 0.609(0.538-0.680) for the Wells, Geneva, YEARS, PERC, Padua, and IMPROVE scores, respectively. Consistency was significant in the pairwise comparison of Wells vs Geneva(Kappa 0.753, P = 0.565), YEARS vs Padua(Kappa 0.816, P = 0.565), YEARS vs IMPROVE(Kappa 0.771, P = 0.645), and Padua vs IMPROVE(Kappa 0.789, P = 0.812), whereas it did not present in the other pairs. The YI was improved to 0.304, 0.272, and 0.264 for the PERC(AUC 0.631[0.547-0.714], P = 0.006), Padua(AUC 0.613[0.527-0.700], P = 0.017), and IMPROVE(AUC 0.614[0.530-0.698], P = 0.016), with a revised cutoff of 5 or less, 6 or more, and 4 or more denoting the VTE-likely, respectively. CONCLUSIONS: For nonsurgical hospitalized patients with suspected VTE, the Geneva and Wells scores perform best, the PERC scores performs worst despite its significantly high sensitivity, whereas the others perform intermediately, albeit the absolute predictive power of all isolated scores are mediocre. The predictive power of the PERC, Padua, and IMPROVE scores are improved with revised cutoffs.

8.
Pestic Biochem Physiol ; 194: 105468, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37532309

RESUMO

High level resistance for a variety of insecticides has emerged in Bemisia tabaci, a globally notorious insect. Neonicotinoid insecticides have been applied widely to control B. tabaci. Whether a differentially expressed gene CYP6DB3 discovered from transcriptome data of B. tabaci is involved in the resistance to neonicotinoid insecticides remains unclear. In the study, CYP6DB3 expression was significantly up-regulated in both thiamethoxam- and imidacloprid-resistant strains relative to the susceptive strains. We also found that CYP6DB3 expression was up-regulated after B. tabaci adults were exposed to thiamethoxam and imidacloprid. Moreover, knocking down CYP6DB3 expression via feeding corresponding dsRNA significantly reduced CYP6DB3 mRNA levels by 34.1%. Silencing CYP6DB3 expression increased the sensitivity of B. tabaci Q adults against both thiamethoxam and imidacloprid. Overexpression of CYP6DB3 gene reduced the toxicity of imidacloprid and thiamethoxam to transgenic D. melanogaster. In addition, metabolic studies showed that CYP6DB3 can metabolize 24.41% imidacloprid in vitro. Collectively, these results strongly support that CYP6DB3 plays an important role in the resistance of B. tabaci Q to imidacloprid and thiamethoxam. This work will facilitate a deeper insight into the part of cytochrome P450s in the evolution of insecticide resistance and provide a theoretical basis for the development of new integrated pest resistance management.


Assuntos
Hemípteros , Inseticidas , Animais , Tiametoxam/metabolismo , Inseticidas/farmacologia , Inseticidas/metabolismo , Hemípteros/genética , Hemípteros/metabolismo , Drosophila melanogaster/metabolismo , Neonicotinoides/farmacologia , Neonicotinoides/metabolismo , Nitrocompostos/farmacologia , Nitrocompostos/metabolismo , Resistência a Inseticidas/genética , Sistema Enzimático do Citocromo P-450/genética , Sistema Enzimático do Citocromo P-450/metabolismo
9.
Pestic Biochem Physiol ; 194: 105469, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37532310

RESUMO

Bemisia tabaci (Hemiptera: Gennadius) is a notorious pest that is capable of feeding on >600 kinds of agricultural crops. Imidacloprid is critical in managing pest with sucking mouthparts, such as B. tabaci. However, the field population of B. tabaci has evolved resistance because of insecticide overuse. The overexpression of the detoxification enzyme cytochrome P450 monooxygenase is considered the main mechanism of imidacloprid resistance, but the mechanism underlying gene regulation remains unclear. MicroRNAs are a type of endogenous small molecule compounds that is fundamental in regulating gene expression at the post-transcriptional level. Whether miRNAs are related to the imidacloprid resistance of B. tabaci remains unknown. To gain deep insight into imidacloprid resistance, we conducted on miRNAs expression profiling of two B. tabaci Mediterranean (MED) strains with 19-fold resistance through deep sequencing of small RNAs. A total of 8 known and 1591 novel miRNAs were identified. In addition, 16 miRNAs showed significant difference in expression levels between the two strains, as verified by quantitative reverse transcription PCR. Among these, novel_miR-376, 1517, and 1136 significantly expressed at low levels in resistant samples, decreasing by 36.9%, 60.2%, and 15.6%, respectively. Moreover, modulating novel_miR-1517 expression by feeding with 1517 inhibitor and 1517 mimic significantly affected B. tabaci imidacloprid susceptibility by regulating CYP6CM1 expression. In this article, miRNAs related to imidacloprid resistance of B. tabaci were systematically screened and identified, providing important information for the miRNA-based technological innovation for this pest management.


Assuntos
Hemípteros , Inseticidas , MicroRNAs , Animais , Hemípteros/metabolismo , Resistência a Inseticidas/genética , Neonicotinoides/farmacologia , Neonicotinoides/metabolismo , Inseticidas/farmacologia , Inseticidas/metabolismo , Nitrocompostos/farmacologia , Nitrocompostos/metabolismo , MicroRNAs/genética
10.
Pestic Biochem Physiol ; 196: 105635, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37945266

RESUMO

The whitefly, Bemisia tabaci, comes up high metabolic resistance to most neonicotinoids in long-term evolution, which is the key problem of pest control. UGT glycosyltransferase, as a secondary detoxification enzyme, plays an indispensable role in detoxification metabolism. In this study, UGT inhibitors, 5-nitrouracil and sulfinpyrazone, dramatically augmented the toxic damage of neonicotinoids to B. tabaci. A UGT named UGT353G2 was identified in whitefly, which was notably up-regulated in resistant strain (3.92 folds), and could be induced by most neonicotinoids. Additionally, the using of RNA interference (RNAi) suppresses UGT353G2 substantially increased sensitivity to neonicotinoids in resistant strain. Our results support that UGT353G2 may be involved in the neonicotinoids resistance of whitefly. These findings will help further verify the functional role of UGTs in neonicotinoid resistance.


Assuntos
Hemípteros , Inseticidas , Animais , Neonicotinoides/farmacologia , Neonicotinoides/metabolismo , Inseticidas/farmacologia , Inseticidas/metabolismo , Hemípteros/metabolismo , Nitrocompostos/farmacologia , Nitrocompostos/metabolismo , Resistência a Inseticidas/genética , Difosfato de Uridina/metabolismo
11.
J Psychosoc Oncol ; 40(4): 506-518, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34392806

RESUMO

Purpose:Negative emotions can adversely affect the treatment and recovery of breast cancer patients. Post-traumatic stress caused by cancer can increase the negative emotions of patients. This study assessed the relationship between post-traumatic stress and emotional regulation strategies, and the role of emotional regulation in the relationship between post-traumatic stress and negative emotions in breast cancer patients.Design:Cross-sectional questionnaire with sample of 214 Chinese women with breast cancerMethods:Participants completed the Impact of Event Scale-Revised, Hospital Anxiety and Depression Scale, and Emotion Regulation Questionnaire. Correlation and mediation analyses were conducted to assess associations among the scores of these scales.Findings:Patients with low post-traumatic stress chose cognitive reappraisal strategies, while those with high post-traumatic stress chose expressive suppression strategies. Cognitive reappraisal had a significant negative predictive effect on negative emotions, while expressive suppression had a significant positive predictive effect on patient's negative emotions.Conclusions:Cognitive reappraisal may reduce the impact of post-traumatic stress on negative emotions experienced by breast cancer patients. Implications for psychosocial providers or policy: Psychosocial workers in China should conduct cognitive reappraisal training for breast cancer patients with high negative emotions and severe post-traumatic stress. For Chinese breast cancer patients living in other regions, the local oncology social workers should take into account their cultural background and lack of expression, and encourage them to choose cognitive reappraisal strategies.


Assuntos
Neoplasias da Mama , Regulação Emocional , Transtornos de Estresse Pós-Traumáticos , Neoplasias da Mama/psicologia , Neoplasias da Mama/terapia , Cognição , Estudos Transversais , Emoções/fisiologia , Feminino , Humanos
12.
Zhongguo Zhong Yao Za Zhi ; 47(24): 6741-6752, 2022 Dec.
Artigo em Zh | MEDLINE | ID: mdl-36604924

RESUMO

To explore the mechanism of Suanzaoren Decoction(SZRD) in improving the insomnia rat model induced by DL-4-chlorophenylalanine(PCPA). The insomnia model was established by single intraperitoneal injection with PCPA(400 mg·kg~(-1)), UPLC-Q-TOF-MS/MS was used to analyze the profile of metabolites in rat hippocampus samples, combined with multivariate statistical analysis and screening of differential metabolites, and related metabolic pathways were constructed with MetaboAnalyst 5.0. The high-throughput sequencing of V3-V4 regions of 16 S rRNA gene was used to predict the structure and relative abundance of intestinal flora by LEfSe, OPLS-DA and PICRUSt2. A total of 22 differential hippocampus metabolites were identified by metabolomics analysis, including amino acids, fatty acids, nucleosides, organic acids, vitamins, and others. Pathway analysis showed that alanine, aspartate and glutamic metabolism, D-glutamine and D-glutamate metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, arginine biosynthesis were the main pathways. 16 S rRNA gene sequencing showed that Ruminococcus and Eubacterium were the differences between SZRD group and model group. Ruminococcus might be the sign of SZRD improving PCPA insomnia on analysis of PICRUSt2 and LEfSe. Furthermore Spearman correlation analysis showed that the differential metabolites 2-oxo-4-methylthiobutyric acid and palmitic acid intervened by SZRD were significantly positively correlated with the differential flora. In conclusion, SZRD indirectly improves insomnia by affecting metabolic pathways such as amino acids metabolic pathways and regulating the structure of flora. The results of this study provide a new mechanism and new idea for elucidating the mechanism of classic famous prescription SZRD in improving insomnia from the perspective of intestinal flora.


Assuntos
Medicamentos de Ervas Chinesas , Microbioma Gastrointestinal , Distúrbios do Início e da Manutenção do Sono , Ratos , Animais , Distúrbios do Início e da Manutenção do Sono/tratamento farmacológico , Distúrbios do Início e da Manutenção do Sono/genética , Espectrometria de Massas em Tandem , Metabolômica/métodos , Medicamentos de Ervas Chinesas/farmacologia , Aminoácidos
13.
J Mol Cell Cardiol ; 161: 9-22, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34339758

RESUMO

OBJECTIVE: Pulmonary vascular remodeling due to excessive growth factor production and pulmonary artery smooth muscle cells (PASMCs) proliferation is the hallmark feature of pulmonary arterial hypertension (PAH). Recent studies suggest that miR-663 is a potent modulator for tumorigenesis and atherosclerosis. However, whether miR-663 involves in pulmonary vascular remodeling is still unclear. METHODS AND RESULTS: By using quantitative RT-PCR, we found that miR-663 was highly expressed in normal human PASMCs. In contrast, circulating level of miR-663 dramatically reduced in PAH patients. In addition, in situ hybridization showed that expression of miR-663 was decreased in pulmonary vasculature of PAH patients. Furthermore, MTT and cell scratch-wound assay showed that transfection of miR-663 mimics significantly inhibited platelet derived growth factor (PDGF)-induced PASMCs proliferation and migration, while knockdown of miR-663 expression enhanced these effects. Mechanistically, dual-luciferase reporter assay revealed that miR-663 directly targets the 3'UTR of TGF-ß1. Moreover, western blots and ELISA results showed that miR-663 decreased PDGF-induced TGF-ß1 expression and secretion, which in turn suppressed the downstream smad2/3 phosphorylation and collagen I expression. Finally, intratracheal instillation of adeno-miR-663 efficiently inhibited the development of pulmonary vascular remodeling and right ventricular hypertrophy in monocrotaline (MCT)-induced PAH rat models. CONCLUSION: These results indicate that miR-663 is a potential biomarker for PAH. MiR-663 decreases PDGF-BB-induced PASMCs proliferation and prevents pulmonary vascular remodeling and right ventricular hypertrophy in MCT-PAH by targeting TGF-ß1/smad2/3 signaling. These findings suggest that miR-663 may represent as an attractive approach for the diagnosis and treatment for PAH.


Assuntos
MicroRNAs/sangue , Hipertensão Arterial Pulmonar/genética , Fator de Crescimento Transformador beta1/metabolismo , Remodelação Vascular/genética , Idoso , Animais , Becaplermina/farmacologia , Movimento Celular/efeitos dos fármacos , Movimento Celular/genética , Proliferação de Células/efeitos dos fármacos , Proliferação de Células/genética , Células Cultivadas , Modelos Animais de Doenças , Feminino , Humanos , Masculino , MicroRNAs/genética , Pessoa de Meia-Idade , Monocrotalina/toxicidade , Músculo Liso Vascular/citologia , Músculo Liso Vascular/efeitos dos fármacos , Hipertensão Arterial Pulmonar/induzido quimicamente , Hipertensão Arterial Pulmonar/metabolismo , Artéria Pulmonar/citologia , Ratos Sprague-Dawley , Proteína Smad2/metabolismo , Proteína Smad3/metabolismo , Fator de Crescimento Transformador beta1/genética , Remodelação Vascular/efeitos dos fármacos
14.
Prostate ; 81(15): 1179-1190, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34418127

RESUMO

BACKGROUND: Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a common male genitourinary system disease. As a neuroendocrine hormone, melatonin possesses a variety of biological functions, among which its anti-inflammatory effects have recently drawn substantial attention. The purpose of the current research was to study the effect of melatonin on CP/CPPS and the underlying mechanisms using a mouse model of experimental autoimmune prostatitis (EAP). METHODS: The EAP mouse model was successfully established by subcutaneously injecting a mixture of prostate antigen and complete Freund's adjuvant. On Day 42, hematoxylin-eosin staining was used to evaluate the histological appearance of prostate tissues. Chronic pelvic pain development was assessed by suprapubic allodynia. The levels of inflammation-related cytokines, such as interferon-γ, interleukin (IL)-17, and IL-1ß, were detected by enzyme-linked immunosorbent assay. Then, we explored the anti-inflammatory effects of melatonin on CP/CPPS by Western blotting and immunohistochemical staining, by measuring the expression of silent information regulator 1 (Sirt1) and NLRP3 inflammasome-related proteins in EAP mice. RESULTS: The EAP model mice exhibited severe diffuse leukocyte infiltration and significantly increased pelvic pain compared to the control mice. In the melatonin treatment group, the histological appearance of the prostate tissues, pelvic pain development, and the levels of proinflammatory cytokines were significantly alleviated compared to the EAP + dimethyl sulfoxide group. Furthermore, we found that the protective effects of melatonin were achieved through activation of the Sirt1 pathway and downregulation of the NLRP3 inflammasome. CONCLUSIONS: The results indicated that melatonin could attenuate prostate inflammation and pelvic pain by inhibiting the NLRP3 inflammasomes signaling pathway through the activation of Sirt1 in mice with EAP, and these efforts should provide a promising therapeutic strategy for CP/CPPS.


Assuntos
Anti-Inflamatórios/uso terapêutico , Inflamassomos/metabolismo , Melatonina/uso terapêutico , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Dor Pélvica/tratamento farmacológico , Prostatite/tratamento farmacológico , Sirtuína 1/metabolismo , Animais , Anti-Inflamatórios/farmacologia , Citocinas/metabolismo , Modelos Animais de Doenças , Masculino , Melatonina/farmacologia , Camundongos , Medição da Dor , Dor Pélvica/metabolismo , Prostatite/metabolismo
15.
FASEB J ; 34(10): 14006-14023, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32862457

RESUMO

Chronic prostatitis and chronic pelvic pain syndrome (CP/CPPS) is a complicated syndrome characterized by genitourinary pain in the absence of bacterial infection. Th17 cell-driven autoimmunity has been proposed as a cause of CP/CPPS. However, the factors that promote Th17-driven autoimmunity in experimental autoimmune prostatitis (EAP) and the molecular mechanisms are still largely unknown. Here, we showed that Th17 cells were excessively activated, and blockade of IL-17A could effectively ameliorate various symptoms in EAP. Furthermore, we revealed that calcium/calmodulin-dependent kinase Ⅳ (CaMK4), especially Thr196 p-CaMK4 was increased in the Th17 cells of the EAP group, which were activated by intracellular cytosolic Ca2+ . Pharmacologic and genetic inhibition of CaMK4 decreased the proportion of Th17 cells, and the protein and mRNA level of IL-17A, IL-22, and RORγt. The phosphorylation of CaMK4 was dependent on the increase in intracellular cytosolic Ca2+ concentration in Th17 cells. A mechanistic study demonstrated that inhibition of CaMK4 reduced IL-17A production by decreasing the phosphorylation of Akt-mTOR, which was well accepted to positively regulate Th17 differentiation. Collectively, our results demonstrated that Ca2+ -CaMK4-Akt/mTOR-IL-17A axis inhibition may serve as a promising therapeutic strategy for CP/CPPS.


Assuntos
Doenças Autoimunes/imunologia , Proteína Quinase Tipo 4 Dependente de Cálcio-Calmodulina/metabolismo , Ativação Linfocitária , Prostatite/imunologia , Transdução de Sinais , Células Th17/imunologia , Animais , Cálcio/metabolismo , Proteína Quinase Tipo 4 Dependente de Cálcio-Calmodulina/genética , Interleucina-17/metabolismo , Interleucinas/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Membro 3 do Grupo F da Subfamília 1 de Receptores Nucleares/metabolismo , Fosforilação , Proteínas Proto-Oncogênicas c-akt/metabolismo , Serina-Treonina Quinases TOR/metabolismo , Interleucina 22
16.
Thromb J ; 19(1): 95, 2021 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-34863189

RESUMO

BACKGROUND: Cancer-associated venous thromboembolism (VTE) is common in patients with primary lung cancer. It has been understudied which authoritative risk assessment score of cancer-associated VTE is optimal for the assessment of VTE development in hospitalized medical patients with lung cancer. METHODS: Patients with lung cancer who had undergone computed tomography pulmonary angiography (CTPA), compression ultrasonography (CUS) of lower and upper extremities, and/or planar ventilation/perfusion (V/Q) scan to confirm the presence or absence of VTE during a medical hospitalization were retrospectively reviewed. Based on the actual prevalence of VTE among all patients, the possibility of VTE were reassessed with the Khorana score, the PROTECHT score, the CONKO score, the ONKOTEV score, the COMPASS-CAT score, and the CATS/MICA score, to compare their assessment accuracy for VTE development. RESULTS: A total of 1263 patients with lung cancer were incorporated into the final analysis. With respect to assessment efficiency for VTE occurrence, the scores with adjusted agreement from highest to lowest were the ONKOTEV score (78.6%), the PROTECHT score (73.4%), the CONKO score (72.1%), the COMPASS-CAT score (71.7%), the Khorana score (70.9%), and the CATS/MICA score (60.3%). The ONKOTEV score had the highest Youden index which was 0.68, followed by the PROTECHT score (0.58), the COMPASS-CAT score (0.56), the CONKO score (0.55), the Khorana score (0.53), and the CATS/MICA score (0.23). CONCLUSIONS: Among the Khorana score, the PROTECHT score, the CONKO score, the ONKOTEV score, the COMPASS-CAT score, and the CATS/MICA score which are approved by authoritative guidelines, the ONKOTEV score is optimal for the assessment of VTE development in hospitalized medical patients with lung cancer.

17.
Neurocase ; 27(1): 22-29, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33378225

RESUMO

Attentional bias to threatening information may play a vital role in the onset and maintenance of obsessive-compulsive disorder (OCD). This study aimed to explore whether adolescents with OCD exhibited attentional bias toward faces that express disgust or fear. Participants were 27 adolescents with a first-time primary diagnosis of OCD and 27 healthy controls. To assess OCD, depression, and anxiety symptoms, all participants completed the Yale-Brown Obsessive Compulsive Scale, the Hamilton Depression Scale, and the Hamilton Anxiety Scale, respectively, followed by the modified dot probe task. Repeated measures ANOVA revealed a main effect of validity type and a significant group × validity type interaction effect. The results of one sample t-tests showed that participants in the OCD group had an attentional bias toward both disgusted and fearful faces. Further analysis indicated that adolescents in the OCD group showed facilitated attention toward the fearful faces and difficulty disengaging from disgusted faces. Adolescents with OCD exhibited facilitated attention toward threat stimuli, and when they allocated attention to threat, they experienced difficulty disengaging from it. Treatment procedures to modify the attentional bias may be effective.


Assuntos
Viés de Atenção , Transtorno Obsessivo-Compulsivo , Adolescente , Ansiedade/etiologia , Emoções , Humanos
18.
Cancer Sci ; 111(2): 637-646, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31677335

RESUMO

The tripartite motif containing 23 (TRIM23) gene is a member of the tripartite motif (TRIM) family that participates in many pathophysiological processes. However, the role of TRIM23 in lung adenocarcinoma (LUAD) remains unclear. In the present study, TRIM23 was first screened by next-generation sequencing between the cisplatin (DDP)-resistant A549/DDP cell line and the parental A549 cell line, combined with integrated analysis of the Gene Expression Omnibus (GEO) data (E-GEOD-43493 and E-GEOD-43494). The expression of TRIM23 was then verified to be upregulated in the DDP-resistant LUAD cells and tissues. The knockdown of TRIM23 expression in A549/DDP cells caused increased apoptosis, decreased IC50 values of DDP, NF-κB nuclear translocation, inhibition of cell proliferation in vitro and in vivo, inhibition of GLUT1/3 expression, glucose uptake, and lactate and ATP production. TRIM23 overexpression resulted in the opposite effects in A549 cells. In addition, the inhibition of proliferation in A549 cells caused by NF-κB signaling inhibitor PTDC or glycolysis inhibitor 3-BrPA could be weakened by TRIM23 overexpression. Furthermore, immunohistochemical analysis revealed that TRIM23 was upregulated in 46.1% (70/152) of LUAD cases, and elevated TRIM23 expression was correlated with high expression of NF-κB, poor cellular differentiation, and adverse overall survival (OS) and disease-free survival (DFS). In conclusion, our study demonstrates that TRIM23 acts as an oncogene in LUAD and promotes DDP resistance by regulating glucose metabolism via the TRIM23/NF-κB/ GLUT1/3 axis.


Assuntos
Adenocarcinoma/genética , Cisplatino/farmacologia , Resistencia a Medicamentos Antineoplásicos , Proteínas de Ligação ao GTP/genética , Neoplasias Pulmonares/genética , Regulação para Cima , Células A549 , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Cisplatino/uso terapêutico , Feminino , Proteínas de Ligação ao GTP/metabolismo , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Glucose/metabolismo , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/metabolismo , Masculino , Camundongos , Pessoa de Meia-Idade , NF-kappa B/metabolismo , Transdução de Sinais , Análise de Sobrevida
19.
Prostate ; 80(9): 663-673, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32255522

RESUMO

BACKGROUND: Depressive symptoms are found in approximately 78% of chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) patients, but the pathological mechanisms remain unknown. Increasing evidence suggests that abnormal gut microbiota may play an important role in depression. Thus, we aimed to investigate whether gut microbiota contributes to CP/CPPS-associated depression by using a mouse model of experimental autoimmune prostatitis (EAP). METHODS: Male nonobese diabetic mice were immunized twice by subcutaneous injection of prostate antigen and adjuvant. Behavioral tests consisted of an open field test, sucrose preference test, forced swimming tests, and tail suspension test was used to confirm the depression-like symptoms that were induced by EAP. Then, fecal samples were collected, and 16S ribosomal RNA gene sequencing was performed to detect differences in gut microbiota composition between control and EAP group. Additionally, fecal bacteria from the control and EAP mice were transplanted into antibiotics-induced pseudo-germ-free mice to investigate the effects on host behaviors and the composition of gut bacteria. RESULTS: EAP was successfully established and exhibited depressive-like behaviors in mice. The 16S rRNA analysis of fecal samples indicated the abnormal composition of gut microbiota in the EAP mice compared to the control mice. In the fecal microbiota transplant study, antibiotics-treated pseudo-germ-free mice presented depressive states as compared to naïve mice. Fecal bacteria transplant from EAP mice, but not from control mice, into the pseudo-germ-free mice, significantly exaggerated host depression-like behaviors. Moreover, fecal bacteria transplants from control and EAP mice induced distinct alterations in α-diversity and ß-diversity indices. In all, 24 bacteria at six phylogenetic levels were remarkably changed by the fecal bacteria transplantation. CONCLUSIONS: Abnormal gut microbiota composition after EAP induction may contribute to the development of depression in mice. A therapeutic strategy that targets gut microbiota may provide an alternative treatment for alleviating this condition.


Assuntos
Comportamento Animal/fisiologia , Depressão/microbiologia , Microbioma Gastrointestinal/fisiologia , Prostatite/microbiologia , Prostatite/psicologia , Animais , Antibacterianos/farmacologia , Doença Crônica , Depressão/imunologia , Transplante de Microbiota Fecal , Microbioma Gastrointestinal/efeitos dos fármacos , Microbioma Gastrointestinal/imunologia , Masculino , Camundongos , Camundongos Endogâmicos NOD , Prostatite/imunologia , Distribuição Aleatória
20.
Respir Res ; 21(1): 185, 2020 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-32677947

RESUMO

To date, the association between the acute pulmonary embolism (PE) and the currently existing cancer-related genomic alterations in patients with non-small cell lung cancer (NSCLC) has been understudied. We reviewed patients with a confirmed histopathological diagnosis of NSCLC who underwent computed tomography pulmonary angiography (CTPA) and molecular tests including ALK, ROS1, EGFR, BRAF V600E as well as PD-L1 during the diagnosis of NSCLC, to explore the association between the genomic alterations and PE. The results showed that, for the patients with positive results of genomic alterations, the proportion of positive ALK (13.6%vs8.5%, P<0.001) and PD-L1 (24.7%vs19.9%, P = 0.001) in PE group were more than those in Non-PE group. The patients with positive ALK and PD-L1 had the most (19.0%) and second most (15.4%) incidence of PE among all the patients being studied. A multivariate Logistic regression analysis showed that the positive ALK [1.685(1.065-2.215)(P<0.001)] and PD-L1[1.798(1.137-2.201)(P<0.001)] were correlated with the occurrence of PE. The positive results of ALK and PD-L1 genomic alterations may indicate an increased risk of pulmonary embolism in patients with NSCLC.


Assuntos
Quinase do Linfoma Anaplásico/genética , Antígeno B7-H1/genética , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/genética , Embolia Pulmonar/genética , Idoso , Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Carcinoma Pulmonar de Células não Pequenas/epidemiologia , Feminino , Predisposição Genética para Doença , Humanos , Incidência , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/epidemiologia , Masculino , Pessoa de Meia-Idade , Embolia Pulmonar/diagnóstico por imagem , Embolia Pulmonar/epidemiologia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco
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