Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 3.032
Filtrar
1.
Food Chem ; 462: 140860, 2025 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-39213964

RESUMO

A modified QuEChERS method was developed to determine multi-class pesticide and veterinary residues in aquatic products. Chitosan microspheres were conveniently synthesized and utilized as the cleanup adsorbent in the QuEChERS procedure, showcasing rapid filtration one-step pretreatment ability for the determination of drug multi-residues in aquatic products. Compared to conventional synthetic sorbents, chitosan microspheres not only have good purification performance, but also have renewable and degradable properties. This novel sorbent worked well in the simultaneous determination of 95 pesticides and veterinary drug residues in aquatic products after being combined with an improved one-step vortex oscillating cleanup method. We achieved recoveries ranging from 64.0% to 115.9% for target drugs in shrimp and fish matrix. The limits of detection and quantification were 0.5-1.0 and 1.0-2.0 µg kg-1, respectively. Notably, hydrocortisone was detected with considerable frequency and concentration in the tested samples, underscoring the necessity for stringent monitoring of this compound in aquatic products.


Assuntos
Quitosana , Peixes , Microesferas , Espectrometria de Massas em Tandem , Drogas Veterinárias , Animais , Quitosana/química , Cromatografia Líquida de Alta Pressão , Drogas Veterinárias/análise , Drogas Veterinárias/isolamento & purificação , Contaminação de Alimentos/análise , Resíduos de Drogas/análise , Resíduos de Drogas/isolamento & purificação , Resíduos de Drogas/química , Praguicidas/isolamento & purificação , Praguicidas/análise , Praguicidas/química , Resíduos de Praguicidas/isolamento & purificação , Resíduos de Praguicidas/análise , Resíduos de Praguicidas/química , Adsorção , Extração em Fase Sólida/métodos , Extração em Fase Sólida/instrumentação , Poluentes Químicos da Água/isolamento & purificação , Poluentes Químicos da Água/química , Poluentes Químicos da Água/análise , Alimentos Marinhos/análise , Frutos do Mar/análise , Espectrometria de Massa com Cromatografia Líquida
2.
J Integr Med ; 2024 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-39256145

RESUMO

OBJECTIVE: The objective of this study was to investigate the clinical efficacy and safety of treating sepsis patients with Xuebijing injection (XBJI). METHODS: We conducted a retrospective analysis of 418 patients who experienced severe infections and were treated with XBJI from June 2018 to June 2021. Propensity score matching was used to match the patient cases. The study population included 209 pairs of cases (418 individuals), and the analysis included data from before and after a 14-day course of treatment with carbapenem alone, or carbapenem with XBJI. RESULTS: There were no significant differences in the 14-day mortality or length of hospital stay (P > 0.05) between the two groups. The combined treatment group had more patients with C-reactive protein that returned to normal levels (compared to baseline) than the non-combined treatment group (14.4% vs 8.1%; odds ratio [OR]: 0.528; 95% confidence interval [CI]: 0.282-0.991; P = 0.026). Similarly, the combined treatment group had higher procalcitonin attainment rate (55.0% vs 39.7%; OR: 0.513; 95% CI: 0.346-0.759; P = 0.001) than the non-combined treatment group. Further, more patients in the combined treatment group achieved normal creatinine levels than in the non-combined treatment group (64.1% vs 54.1%; OR: 0.659; 95% CI: 0.445-0.975; P = 0.037). CONCLUSION: The combination of XBJI with carbapenem did not reduce the 14-day mortality rate of patients with severe infection, but it was able to reduce the level of inflammatory factors in patients with sepsis, and had a protective effect on liver and kidney function. Please cite this article as: Gong ZT, Yang HX, Zhu BB, Liu HH, Siri GL. Clinical efficacy of Xuebijing injection for the treatment of sepsis: A retrospective cohort study. J Integr Med. 2024; Epub ahead of print.

3.
Arch Esp Urol ; 77(7): 746-752, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39238298

RESUMO

BACKGROUND: As a frequent disease, prostatic hyperplasia could be treated by transurethral resection of prostate (TURP). However, postoperative pain may affect the prognosis of patients to some extent, so exploring reasonable anaesthetic drugs is an important measure to reduce the recovery period of anaesthesia. This study used the combination of ropivacaine and nalbuphine for intraoperative anaesthesia in patients undergoing TURP to investigate its effect on pain during anaesthesia recovery. METHODS: A retrospective study was conducted on the clinical data of 205 patients with prostatic hyperplasia who underwent TURP in our hospital from June 2020 to December 2022. All patients experienced epidural anaesthesia, and 110 patients who used ropivacaine combined with nalbuphine were included in the study group, whereas 95 patients who used ropivacaine and lidocaine were classified as the control group. The Visual Analogue Scale was used to evaluate the pain conditions of patients. The levels of pain mediators, such as substance P (SP), bradykinin (BK) and histamine (HIS), the stress levels, including cortisol (Cort), adrenocorticotropic hormone (ACTH) and norepinephrine (NE), and the incidence of adverse reactions were compared between the two groups. RESULTS: At T0 (postoperative 30 min), T1 (postoperative 60 min), T2 (postoperative 2 h) and T3 (postoperative 4 h), the study group had significantly lower pain scores (p < 0.01), levels of SP, BK and HIS (p < 0.001), and levels of Cort, ACTH and NE (p < 0.05) than the control group. No statistical difference was observed in the incidences of adverse reactions between the two groups (p > 0.05). CONCLUSIONS: The combination of ropivacaine and nalbuphine has a notable analgesic effect during anaesthesia recovery in patients undergoing TURP. It inhibits the secretion of pain and physical stress indicators and relieves postoperative pain to a large extent.


Assuntos
Anestésicos Locais , Nalbufina , Dor Pós-Operatória , Hiperplasia Prostática , Ropivacaina , Ressecção Transuretral da Próstata , Humanos , Masculino , Ropivacaina/administração & dosagem , Ressecção Transuretral da Próstata/efeitos adversos , Hiperplasia Prostática/cirurgia , Nalbufina/administração & dosagem , Nalbufina/uso terapêutico , Estudos Retrospectivos , Idoso , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/prevenção & controle , Anestésicos Locais/administração & dosagem , Pessoa de Meia-Idade , Quimioterapia Combinada , Medição da Dor
4.
Environ Pollut ; 361: 124901, 2024 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-39243936

RESUMO

Triclosan, a widely used antimicrobial agent, is frequently detected in aquatic environments, prompting concerns about its toxic effects on aquatic species. Understanding its occurrence and ecological risks is crucial for mitigating triclosan contamination, formulating water quality criteria, and protecting aquatic organisms. This study systematically analyzed triclosan occurrence and ecological risks in surface water across China using the Risk Quotient methodology. A total of 139 and 134 data points were collected for triclosan concentrations and toxicities of aquatic organisms, respectively. Triclosan concentrations in surface water across China ranged from 0.06 to 612 ng/L. Higher triclosan levels were observed in Eastern China compared to Central and Western China, with the average concentration being 4.21- and 7.25-fold higher, respectively. Specifically, the Southeast Rivers Basin (132.98 ng/L) and Pearl River Basin (86.64 ng/L) exhibited maximum triclosan levels, 2.57-19.58 times higher than the other river basins. Further analysis revealed elevated triclosan concentrations in small rivers and surface water within residential areas, with values of 246.1 ng/L in Zhejiang, 86.64 ng/L in Guangdong, 67.58 ng/L in Jiangsu, and 127.99 ng/L in Beijing. Additionally, species sensitivity distribution curves indicated that algae was the most sensitive species to triclosan exposure, followed by invertebrates, while fish exhibited the highest tolerance. The Predicted No-Effect Concentration for the algae, invertebrates, fish, and combined aquatic species were determined to be 0.09, 2.95, 4.44, and 1.51 µg/L, respectively. The occurrence of triclosan in surface water across China did not pose widespread ecological risks. However, targeted monitoring and mitigation efforts are needed, especially in highly developed regions. This study provides crucial insights into the status of triclosan contaminations and risks in China and contributes valuable knowledge to global efforts aimed at safeguarding aquatic ecosystems.

5.
Bioact Mater ; 40: 624-633, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39247402

RESUMO

Osteoarthritis (OA) is a highly incident total joint degenerative disease with cartilage degeneration as the primary pathogenesis. The cartilage matrix is mainly composed of collagen, a matrix protein with a hallmark triple-helix structure, which unfolds with collagen degradation on the cartilage surface. A collagen hybridizing peptide (CHP) is a synthetic peptide that binds the denatured collagen triple helix, conferring a potential disease-targeting possibility for early-stage OA. Here, we constructed an albumin nanoparticle (An) conjugated with CHP, loaded with a chondrogenesis-promoting small molecule drug, kartogenin (KGN). The CHP-KGN-An particle exhibited sustained release of KGN in vitro and prolonged in vivo retention selectively within the degenerated cartilage in the knee joints of model mice with early-stage OA. Compared to treatment with KGN alone, CHP-KGN-An robustly attenuated cartilage degradation, synovitis, osteophyte formation, and subchondral bone sclerosis in OA model mice and exhibited a more prominent effect on physical activity improvement and pain alleviation. Our study showcases that targeting the degenerated cartilage by collagen hybridization can remarkably promote the efficacy of small molecule drugs and may provide a novel delivery strategy for early-stage OA therapeutics.

6.
Water Res ; 266: 122369, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-39243458

RESUMO

Highly hydrophilic extracellular polymeric substance (EPS) with gel-like structure seriously plagues the development of sludge deep dewatering. Oxysulfur radicals-based oxidation driven by iron-bearing mineral proposes a promising strategy for effective EPS decomposition. However, the transformation and involved interaction mechanisms of aromatic proteins are still controversial due to the complex EPS structure. Herein, sulfite mediated siderite (denoted as Fe(II)/S(IV)) was developed for targeted transformation aromatic amino acids in EPS oxidation to strengthen sludge solid-liquid separation. The enhanced sludge dewaterability were benefited from the Fe(II)/S(IV) bonded interaction assisted by Fe3+/Fe2+ as redox interface that facilitating the release of intracellular bound water via diminish the hydrophily and bind strength with solid protons. The amide region nitrogen of aromatic amino acids (especially tyrosine and tryptophan) originating from EPS presented looser structure and lower spatial site resistance, which were attributed to the exposure of hydrophobic sites in amino groups after Fe(II)/S(IV) treatment. Furthermore, the effective decline of aromatic amino acids in inner layer-EPS (loosely bound EPS and tightly bound EPS) was directed from Fe-N targeted interaction by triggering a series of sulfate-based radical chain reactions. The good correlation between electron transfer amount (R2 = 0.926) and Fe-N (R2 = 0.925) with bonding interaction demonstrated that the complexation of aromatic amino acids with Fe sites on siderite/sulfite via Fe-N bonds, accounting for efficient sludge solid-liquid separation. This study deepens the understanding of sludge organic matter targeted transformation and provides a tactic for iron-based conditioning of sludge.

8.
Sci Rep ; 14(1): 21136, 2024 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-39256414

RESUMO

The identification and classification of various phenotypic features of Auricularia cornea fruit bodies are crucial for quality grading and breeding efforts. The phenotypic features of Auricularia cornea fruit bodies encompass size, number, shape, color, pigmentation, and damage. These phenotypic features are distributed across various views of the fruit bodies, making the task of achieving both rapid and accurate identification and classification challenging. This paper proposes a novel multi-view multi-label fast network that integrates two different views of the Auricularia cornea fruiting body, enabling rapid and precise identification and classification of six phenotypic features simultaneously. Initially, a multi-view feature extraction model based on partial convolution was constructed. This model incorporates channel attention mechanisms to achieve rapid phenotypic feature extraction of the Auricularia cornea fruiting body. Subsequently, an efficient multi-task classifier was designed, based on class-specific residual attention, to ensure accurate classification of phenotypic features. Finally, task weights were dynamically adjusted based on heteroscedastic uncertainty, reducing the training complexity of the multi-task classification. The proposed network achieved a classification accuracy of 94.66% and an inference speed of 11.9 ms on an image dataset of dried Auricularia cornea fruiting bodies with three views and six labels. The results demonstrate that the proposed network can efficiently and accurately identify and classify all phenotypic features of Auricularia cornea.


Assuntos
Fenótipo , Basidiomycota/classificação , Basidiomycota/fisiologia , Carpóforos , Processamento de Imagem Assistida por Computador/métodos , Algoritmos , Redes Neurais de Computação
9.
ACS Appl Mater Interfaces ; 16(36): 47454-47463, 2024 Sep 11.
Artigo em Inglês | MEDLINE | ID: mdl-39223694

RESUMO

Prussian blue analogues (PBAs) have attracted increasing attention in aqueous zinc-based batteries (AZBs) with the advantages of an open framework, adjustable redox potential, and easy synthesis. However, they exhibited a low specific capacity and a poor cycle performance. In this work, crystalline potassium iron hexacyanoferrate (FeHCF) with dislocation was designed and prepared by a poly(vinylpyrrolidone) (PVP) additive. The metastable state provided by PVP would cause an electrostatic interaction between cyanogen and water molecules. The reduced force increases the steric resistance of the water molecules entering the crystal. The low content of crystal water in FeHCF is associated with the formation of dislocation. The dislocation effect effectively improves the electrochemical reactivity and reaction kinetics of FeHCF. Thus, it presents a high reversible capacity of 131 mAh g-1 with a superior capacity retention of 85% after 550 cycles at 0.5 A g-1. When used as a cathode, the AZBs display a high voltage of 2.6 V, a fast charging capability (<5 min), and a satisfactory cycle stability with a capacity retention of 82% after 400 cycles at 0.2 A g-1 in decoupling electrolytes. This work provides an effective strategy for the design of high-performance PBA-based cathodes for 2.6 V AZBs.

10.
J Orthop Surg Res ; 19(1): 555, 2024 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-39252068

RESUMO

OBJECTIVE: This meta-analysis aimed to explore the impact of prophylactic negative pressure wound therapy (NPWT) on the occurrence of deep surgical site infections (SSIs) following orthopedic surgery. METHODS: A systematic search was conducted across Medline, Embase, Cochrane Library, and Web of Science databases for articles concerning NPWT in patients who underwent orthopedic surgery up to May 20, 2024. Using Stata 15.0, the combined odds ratios (ORs) were calculated with either a random-effects model or a fixed-effects model, depending on the heterogeneity values. RESULTS: From a total of 440 publications, studies that utilized NPWT as the experimental group and conventional dressings as the control group were selected to analyze their impact on SSIs. Ultimately, 32 studies met the inclusion criteria. These included 12 randomized controlled trials and 20 cohort studies, involving 7454 patients, with 3533 of whom received NPWT and 3921 of whom were treated with conventional dressings. The results of the meta-analysis demonstrated that the NPWT group had a lower incidence of deep SSIs in orthopedic surgeries than did the control group [OR 0.64, 95% CI (0.52, 0.80), P = 0.0001]. Subgroup analysis indicated a notable difference for trauma surgeries [OR 0.65, 95% CI (0.50, 0.83), P = 0.001], whereas joint surgeries [OR 0.65, 95% CI (0.38, 1.12), P = 0.122] and spine surgeries [OR 0.61, 95% CI (0.27, 1.35), P = 0.221] did not show significant differences. Additionally, when examined separately according to heterogeneity, trauma surgeries exhibited a significant difference [OR 0.50, 95% CI (0.31, 0.80), P = 0.004]. CONCLUSION: The results of our study indicate that the prophylactic use of NPWT reduces the incidence of deep SSIs following orthopedic trauma surgery when compared to the use of conventional dressings. We postulate that the prophylactic application of NPWT in patients at high risk of developing complications from bone trauma may result in improved clinical outcomes and an enhanced patient prognosis.


Assuntos
Tratamento de Ferimentos com Pressão Negativa , Procedimentos Ortopédicos , Infecção da Ferida Cirúrgica , Tratamento de Ferimentos com Pressão Negativa/métodos , Humanos , Infecção da Ferida Cirúrgica/epidemiologia , Infecção da Ferida Cirúrgica/prevenção & controle , Infecção da Ferida Cirúrgica/etiologia , Procedimentos Ortopédicos/efeitos adversos , Procedimentos Ortopédicos/métodos , Incidência , Ensaios Clínicos Controlados Aleatórios como Assunto , Feminino , Masculino , Resultado do Tratamento , Bandagens
11.
Sci Rep ; 14(1): 20432, 2024 09 03.
Artigo em Inglês | MEDLINE | ID: mdl-39227722

RESUMO

Breast cancer (BC) stands as a predominant global malignancy, significantly contributing to female mortality. Recently uncovered, histone lysine lactylation (kla) has assumed a crucial role in cancer progression. However, the correlation with lncRNAs remains ambiguous. Scrutinizing lncRNAs associated with Kla not only improves clinical breast cancer management but also establishes a groundwork for antitumor drug development. We procured breast tissue samples, encompassing both normal and cancerous specimens, from The Cancer Genome Atlas (TCGA) database. Utilizing Cox regression and XGBoost methods, we developed a prognostic model using identified kla-related lncRNAs. The model's predictive efficacy underwent validation across training, testing, and the overall cohort. Functional analysis concerning kla-related lncRNAs ensued. We identified and screened 8 kla-related lncRNAs to formulate the risk model. Pathway analysis disclosed the connection between immune-related pathways and the risk model of kla-related lncRNAs. Significantly, the risk scores exhibited a correlation with both immune cell infiltration and immune function, indicating a clear association. Noteworthy is the observation that patients with elevated risk scores demonstrated an increased tumor mutation burden (TMB) and decreased tumor immune dysfunction and exclusion (TIDE) scores, suggesting heightened responses to immune checkpoint blockade. Our study uncovers a potential link between Kla-related lncRNAs and BC, providing innovative therapeutic guidelines for BC management.


Assuntos
Neoplasias da Mama , Lisina , RNA Longo não Codificante , Microambiente Tumoral , Humanos , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Feminino , Neoplasias da Mama/genética , Neoplasias da Mama/imunologia , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Microambiente Tumoral/imunologia , Microambiente Tumoral/genética , Lisina/metabolismo , Prognóstico , Biomarcadores Tumorais/genética , Regulação Neoplásica da Expressão Gênica
12.
World J Otorhinolaryngol Head Neck Surg ; 10(3): 173-179, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39233859

RESUMO

Objective: To identify factors that influence the severity of tinnitus via a hierarchical multiple linear regression model. Methods: The study was a retrospective cross-sectional analysis. The study included 331 patients experiencing tinnitus as their primary concern, who visited Shanghai Changzheng Hospital of the Navy Medical University between 2019 and 2021. Data on general health status and disease characteristics were collected from all patients. With their consent, participants underwent audiological evaluatons and completed questionnaires to analyze the characteristics of their tinnitus and the factors influencing its severity. Results: The correlation analysis showed a positive relationship between tinnitus frequency, tinnitus loudness, SAS scores, and PSQI scores with THI scores (P < 0.05) among nine examined variables (gender, handedness, employment status, age, BMI, tinnitus frequency, tinnitus loudness, SAS scores, and PSQI scores). The variables that were extracted from the multiple regression were; for the constant; ß = -51.797, t = -4.484, P < 0.001, variable is significant; for the tinnitus loudness; ß = 0.161, t = 2.604, P < 0.05, variable is significant; for the tinnitus frequency; ß = 0.000, t = 1.269, P = 0.206, variable is not significant; for the SAS scores; ß = 1.310, t = 7.685, P < 0.001, variable is significant; for the PSQI scores; ß = 1.680, t = 5.433, P < 0.001, variable is significant. Therefore, the most accurate model for predicting severity in tinnitus patients is a linear combination of the constant, tinnitus loudness, SAS scores, and PSQI scores, Y(Tinnitus severity) = ß 0 + ß 1 (Tinnitus loudness) + ß 2 (SAS scores) + ß 3 (PSQI scores). ß 0, ß 1, ß 2, and ß 3 are -51.797, 0.161, 1.310 and 1.680, respectively. Conclusion: Tinnitus severity is positively associated with loudness, anxiety levels, and sleep quality. To effectively manage tinnitus in patients, it is essential to promptly identify and address these accompanying factors and related symptoms.

13.
World J Otorhinolaryngol Head Neck Surg ; 10(3): 213-224, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39233861

RESUMO

Background: Eosinophilic extracellular traps (EETs) are reticular complexes comprising deoxyribonucleic-Acid (DNA) fibers and granule proteins. Aims: EETs play a crucial role in antimicrobial host responses and are pathogenic when overproduced or under degraded. EETs created by eosinophils appear to enable vital immune responses against extra-cellular pathogens, nevertheless, trap overproduction is evident in pathology. Materials & Methods: As considerably research is performed, new data affirmed that EETs can alter the outcome of respiratory ailment. Results: We probe into the disclosure and specificity of EETs produced in reaction to various stimuli and propose a role for those frameworks in ailment pathogenesis and the establishment of chronic, unresolved inflammation. Discussion: Whether EETs can be used as a prospective brand-new target for the diagnosis, treatment and prognosis of respiratory ailments is a scientific theme worth studying. Conclusion: We probe into the disclosure and specificity of EETs produced in reaction to various stimuli and propose a role for those frameworks in ailment pathogenesis and the establishment of chronic, unresolved inflammation.

14.
BMC Cardiovasc Disord ; 24(1): 470, 2024 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-39223509

RESUMO

BACKGROUND: Glucose fluctuations may be involved in the pathophysiological process of cardiomyocyte apoptosis, but the exact mechanism remains elusive. This study focused on exploring the mechanisms related to glucose fluctuation-induced cardiomyocyte apoptosis. METHODS: Diabetic rats established via an injection of streptozotocin were randomized to five groups: the controlled diabetic (CD) group, the uncontrolled diabetic (UD) group, the glucose fluctuated diabetic (GFD) group, the GFD group rats with the injection of 0.9% sodium chloride (NaCl) (GFD + NaCl) and the GFD group rats with the injection of N-acetyl-L-cysteine (NAC) (GFD + NAC). Twelve weeks later, cardiac function and apoptosis related protein expressions were tested. Proteomic analysis was performed to further analyze the differential protein expression pattern of CD and GFD. RESULTS: The left ventricular ejection fraction levels and fractional shortening levels were decreased in the GFD group, compared with those in the CD and UD groups. Positive cells tested by DAB-TUNEL were increased in the GFD group, compared with those in the CD group. The expression of Bcl-2 was decreased, but the expressions of Bax, cleaved caspase-3 and cleaved caspase-9 were increased in response to glucose fluctuations. Compared with CD, there were 527 upregulated and 152 downregulated proteins in GFD group. Txnip was one of the differentially expressed proteins related to oxidative stress response. The Txnip expression was increased in the GFD group, while the Akt phosphorylation level was decreased. The interaction between Txnip and Akt was enhanced when blood glucose fluctuated. Moreover, the application of NAC partially reversed glucose fluctuations-induced cardiomyocyte apoptosis. CONCLUSIONS: Glucose fluctuations lead to cardiomyocyte apoptosis by up-regulating Txnip expression and enhancing Txnip-Akt interaction.


Assuntos
Proteínas Reguladoras de Apoptose , Apoptose , Glicemia , Proteínas de Transporte , Diabetes Mellitus Experimental , Miócitos Cardíacos , Proteínas Proto-Oncogênicas c-akt , Ratos Sprague-Dawley , Transdução de Sinais , Animais , Miócitos Cardíacos/patologia , Miócitos Cardíacos/metabolismo , Miócitos Cardíacos/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Diabetes Mellitus Experimental/metabolismo , Masculino , Proteínas de Transporte/metabolismo , Glicemia/metabolismo , Proteínas Reguladoras de Apoptose/metabolismo , Fosforilação , Função Ventricular Esquerda/efeitos dos fármacos , Tiorredoxinas/metabolismo , Cardiomiopatias Diabéticas/metabolismo , Cardiomiopatias Diabéticas/patologia , Cardiomiopatias Diabéticas/fisiopatologia , Cardiomiopatias Diabéticas/etiologia , Proteômica , Ratos , Mapas de Interação de Proteínas , Proteínas de Ciclo Celular
15.
Adv Robot Kinemat ; 31: 196-203, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39224687

RESUMO

This paper studies the problem of how to construct an interpolating planar motion between two positions of a bounded object as opposed to an infinitely large moving plane. Central to this investigation is the question of metrics, i.e., how to characterize the spatial separation or "distance" between two positions of the bounded object. The concept of shape dependent object norms proposed by Kazerounian and Rastegar [5] and refined by Chirikjian and Zhou [1] were used to compute the average distance between two positions for all points of the bounded body. The "ideal" interpolating motion of a bounded object, called motion sweep in this paper, is the one such that, at every intermediate position along the motion, the sum of the average distances from this intermediate position to each of the end positions is minimized. It is found that the resulting motion sweep is not the commonly known motion that linearly interpolates both translation and rotation parts independently but a new type of straight-line motion such that the translational part is coupled to the rotation part via sinusoidal functions sin 1 - t Δ Î¸ and sin t Δ Î¸ , where Δ Î¸ is the range of rotation angle, instead of the usual 1 - t and t without including Δ Î¸ .

16.
Colloids Surf B Biointerfaces ; 245: 114197, 2024 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-39232482

RESUMO

Dental implants with different primary stabilities give rise to distinct stress distributions at the implant-bone interface after placement and exert mechanical force on the cells in the bone tissue. This study aimed to investigate whether the mechanical forces in peri-implant bone participate in the body's immune response and influence macrophage polarization. Therefore, an in vivo rat implantation model with different primary implant stabilities was established. The osteoimmune response and macrophage polarization were investigated, and the osseointegration of the implants was evaluated. In an in vitro experiment, an external compressive force was applied to RAW264.7 cells, and the polarization phenotype was observed. MC3T3-E1 cells were cultured in macrophage-conditioned medium to investigate the regulatory effect of the macrophage-secreted cytokines on the osteogenic differentiation of osteoblasts. In vivo experimental results indicated that the primary stability of implants is positively correlated with the mechanical force. The osteoimmune response was significantly amplified by compressive force generated from implants. This compressive force first induced both M1 and M2 macrophage polarization and then accelerated the progression of the transition to M2 macrophages in the bone repair phase. In vitro, compressive force significantly upregulated the M1 and M2 macrophage polarization. In addition, the suppressive effect of macrophages on the osteogenesis of MC3T3 cells was relieved by cytokines secreted by macrophages under compressive force loading, which promoted their osteogenesis. Overall, these results clarify that compressive force from different primary stabilities is an important influencing factor regulating the osteoimmunne response and macrophage polarization in addition to maintaining the implant.

17.
mSystems ; : e0078824, 2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-39235366

RESUMO

Systemic inflammatory response syndrome (SIRS) is a severe inflammatory response that can lead to organ dysfunction and death. Modulating the gut microbiome is a promising therapeutic approach for managing SIRS. This study assesses the therapeutic potential of the Xuanfei Baidu (XFBD) formula in treating SIRS. The results showed that XFBD administration effectively reduced mortality rates and inflammation in SIRS mice. Using 16S rRNA sequencing and fecal microbiota transplantation (FMT), we substantiated that the therapeutic effects of XFBD are partly attributed to gut microbiota modulation. We conducted in vitro experiments to accurately assess the gut microbiome remodeling effects of 51 compounds isolated from XFBD. These compounds exhibited varying abilities to induce a microbial structure that closely resembles that of the healthy control group. By quantifying their impact on microbial structure and clustering their regulatory patterns, we devised multiple gut microbiome remodeling compound (GMRC) cocktails. GMRC cocktail C, comprising aucubin, gentiopicroside, syringic acid, gallic acid, p-hydroxybenzaldehyde, para-hydroxybenzoic acid, and isoimperatorin, demonstrated superior efficacy in treating SIRS compared to a single compound or to other cocktails. Finally, in vitro experiments showcased that GMRC cocktail C effectively rebalanced bacteria composition in SIRS patients. This study underscores XFBD's therapeutic potential in SIRS and highlights the importance of innovative treatment approaches for this disease by targeting the gut microbiota.IMPORTANCEDeveloping effective treatment strategies for systemic inflammatory response syndrome (SIRS) is crucial due to its severe and often life-threatening nature. While traditional treatments like dexamethasone have shown efficacy, they also come with significant side effects and limitations. This study makes significant strides by demonstrating that the Xuanfei Baidu (XFBD) formula can substantially reduce mortality rates and inflammation in SIRS mice through effective modulation of the gut microbiota. By quantitatively assessing the impact of 51 compounds derived from XFBD on the gut microbiome, we developed a potent gut microbiome remodeling compound cocktail. This cocktail outperformed individual compounds and other mixtures in efficacy against SIRS. These findings highlight the potential of XFBD as a therapeutic solution for SIRS and underscore the critical role of innovative strategies targeting the gut microbiota in addressing this severe inflammatory condition.

18.
Am J Transl Res ; 16(8): 3875-3885, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39262699

RESUMO

OBJECTIVE: To develop a comprehensive and evidence-based early rehabilitation framework for critically ill patients, aiming to establish a systematic and scientifically grounded rehabilitation system. METHODS: A Delphi survey study was conducted, involving two rounds of consultations with 24 experts from critical care medicine, nursing, respiratory therapy, and rehabilitation medicine. Based on evidence from the literature, a draft rehabilitation system was created and evaluated using a Likert 5-point scale. Entries were refined based on expert feedback, with criteria for inclusion being a mean score ≥4, a coefficient of variation <0.25, and agreement (percentage of ratings as "very important" or "important" and "very operative" or "strong operability") ≥75%. Entries were modified or deleted according to expert suggestions. RESULTS: The survey achieved recall rates of 95.8% (23/24) and 86.9% (20/23) in the first and second rounds, respectively. The experts' judgment basis, familiarity, and authority coefficients were 0.96, 0.94, and 0.95, respectively. Following the initial round, 20 questionnaire entries were amended, 14 new entries were added, and 1 was deleted. The second round of Delphi consultations resulted in an early rehabilitation system consisting of 5 primary indicators, 21 secondary indicators, and 56 tertiary indicators, totaling 82 entries. CONCLUSIONS: This study established the first Chinese early rehabilitation system for critically ill patients based on the scientific Delphi method. It provides a structured framework that can serve as a reference for early rehabilitation practices in settings for critically ill patients.

19.
J Thorac Dis ; 16(8): 5201-5208, 2024 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-39268118

RESUMO

Background: The incidence of pulmonary complications following lobectomy remains substantial, with postoperative fluid volume playing a pivotal role. However, the optimal management of fluids after lobectomy remains uncertain. This study aimed to establish a benchmark for perioperative fluid overload in patients undergoing pulmonary surgery by comparing the incidence of pulmonary complications following standard surgical procedures among patients with varying fluid volumes. Methods: A retrospective analysis was conducted on adult patients with non-small cell lung cancer (NSCLC) who underwent lobectomy between January 2018 and January 2019. The primary exposure variable was fluid overload within the initial 24-hour period. The observation outcomes were postoperative pulmonary complications, acute kidney injury (AKI), and postoperative length of stay. Univariate and multivariate analyses were performed. Results: Among the 300 patients included in this study, the low-volume group exhibited a significantly shorter postoperative hospital stay compared to the high-volume group (P=0.02). Furthermore, the low-volume group demonstrated a significantly lower incidence of postoperative atelectasis (P=0.03) and pulmonary infection (P=0.02) compared to the high-volume group. Moreover, logistic regression analysis revealed that the high-volume group had higher odds ratios (ORs) for developing atelectasis [OR: 2.611, 95% confidence interval (CI): 1.050-6.496, P=0.04] and pulmonary infection (OR: 2.642, 95% CI: 1.053-6.630, P=0.04) following lobectomy when compared to the low-volume group. Conclusions: In patients with NSCLC undergoing lobectomy, reducing intravenous infusion after surgery while maintaining hemodynamic stability can effectively shorten hospitalization duration and mitigate the risk of postoperative atelectasis and pulmonary infection.

20.
Mol Cell Biochem ; 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39283563

RESUMO

This research investigates potential therapeutic targets for gastric cancer, focusing on ferroptosis-related genes. Gastric cancer is known for its lower survival rates, necessitating new treatment strategies. This study employed Mendelian randomization to identify ferroptosis-related genes and methylation sites in gastric cancer, examining correlations between Helicobacter pylori infection, GBA1 gene expression, and promoter methylation with single-cell datasets and the TCGA-STAD database. We used Helicobacter pylori-infected gastric cancer cell models and used next-generation sequencing to monitor methylation changes pre- and post-infection. GBA1 expression levels were assessed via qRT-PCR and Western blot both before and after infection. The effect of Helicobacter pylori on GC cell proliferation was analyzed using CCK-8 and EdU assays after knocking down the GBA1 gene. The association between Helicobacter pylori infection and ferroptosis, including its reversibility after GBA1 knockdown, was evaluated using FerrOrange, GSH, MDA, and C11-BODIPY assays. Mass spectrometry measured the impact of Helicobacter pylori and GBA1 knockdown on lipid metabolism. An in vivo subcutaneous tumor-bearing model was also established to confirm these findings. Mendelian randomization analysis revealed that high GBA1 expression and reduced methylation levels of its promoter are risk factors for gastric cancer. Single-cell sequencing and TCGA-STAD datasets indicated a positive correlation between Helicobacter pylori infection and GBA1 expression, with a concurrent negative correlation between GBA1 promoter methylation and GBA1 expression. In gastric cancer cell lines, Helicobacter pylori infection was observed to enhance GBA1 expression and decrease methylation levels at its promoter. Additionally, Helicobacter pylori promoted GC cell proliferation, an effect mitigated by knocking down GBA1. Infection also reduced lipid peroxidation, increased glutathione levels, and impeded ferroptosis in GC cells; however, these effects were reversed following GBA1 knockdown. Changes in sphingolipid metabolism induced by I were detected in GC cell lines. In vivo experiments using a subcutaneous tumor-bearing model demonstrated that Helicobacter pylori infection fosters tumorigenesis in GC cells. Our study demonstrates that Helicobacter pylori infection triggers demethylation and upregulation of GBA1, subsequently inhibiting ferroptosis in gastric cancer cells. These findings suggest that targeting the GBA1 pathway may offer a novel therapeutic approach for managing gastric cancer.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...