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1.
J Agric Food Chem ; 72(38): 20752-20762, 2024 Sep 25.
Artículo en Inglés | MEDLINE | ID: mdl-39285668

RESUMEN

Vitamin A (retinoids) is crucial for human health, with significant demand across the food, pharmaceutical, and animal feed industries. Currently, the market primarily relies on chemical synthesis and natural extraction methods, which face challenges such as low synthesis efficiency and complex extraction processes. Advances in synthetic biology have enabled vitamin A biosynthesis using microbial cell factories, offering a promising and sustainable solution to meet the increasing market demands. This review introduces the key enzymes involved in the biosynthesis of vitamin A from ß-carotene, evaluates achievements in vitamin A production using various microbial hosts, and summarizes strategies for optimizing vitamin A biosynthesis. Additionally, we outline the remaining challenges and propose future directions for the biotechnological production of vitamin A.


Asunto(s)
Bacterias , Vitamina A , beta Caroteno , beta Caroteno/metabolismo , Vitamina A/metabolismo , Bacterias/metabolismo , Bacterias/genética , Retinoides/metabolismo , Retinoides/química , Ingeniería Metabólica , Humanos , Hongos/metabolismo , Hongos/genética , Microbiología Industrial
2.
Endocrine ; 2024 Sep 21.
Artículo en Inglés | MEDLINE | ID: mdl-39306642

RESUMEN

BACKGROUND AND AIM: Previous studies have shown that remnant cholesterol (RC) was associated with heart failure (HF). However, lack of evidence regarding the long-term trend of RC with HF risk. We aimed to investigate the association between cumulative RC exposure with incident HF and to further explore the modulating effects of the time course of RC accumulation. METHODS AND RESULTS: We enrolled 41,168 participants free of CVD from the Kailuan Study who completed the first three health examinations from 2006 to 2010. Cumulative RC exposure included cumulative RC and time-weighted cumulative RC. The combination of cumulative RC and RC slope over time was characterized as the time course of RC accumulation. Multivariable adjusted Cox proportional hazards models were used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for HF risk. We also considered non-HF-related death as a competing event by performing competing risk models as a sensitivity analysis. During 8.84 years, 839 participants developed HF events. Cumulative RC exposure increased the HF risk, with HRs for cumulative RC of 1.72 (1.41-2.10) and for time-averaged cumulative RC of 1.54 (1.25-1.89). There was a nonlinear relationship between cumulative RC exposure and HF risk. Participants with higher cumulative RC and negative slope had the highest HF risk (HR, 1.46; 95% CI, 1.16-1.83). CONCLUSIONS: Both cumulative long-term exposure and the time course of RC accumulation were associated with HF risk. Early RC accumulation resulted in a greater increase in risk compared to later accumulation. This finding suggests that long-term exposure to RC may be useful in identifying individuals at high risk of developing HF and highlights the need for early initiation of appropriate RC control to prevent or reduce incident HF.

3.
Artículo en Inglés | MEDLINE | ID: mdl-39313215

RESUMEN

BACKGROUND AND AIM: Worldwide, the incidence of colorectal cancer (CRC) continues to rise and remains a major public health concern. This study aimed to analyze the temporal and spatial trends in CRC incidence and related risk factors at the country level. METHODS: Data on CRC and related risk factors were obtained from the Global Burden of Disease Study (GBD) 2019 study. Temporal trends were evaluated using estimated annual percentage change while spatial trends were analyzed using spatial autocorrelation and autoregression. Additionally, linear mixed-effects models were employed to identify risk factors linked to CRC incidence. RESULTS: Globally, from 1990 to 2019, the incidence cases of CRC increased by 157.23%. At the national level, the incidence of CRC increased in most countries, with the highest increases of age-standardized incidence rate (ASIR) in Equatorial Guinea, Vietnam, and China. In both 1990 and 2019, global spatial clustering of CRC ASIR highlighted hotspots in Europe, characterized by elevated CRC ASIR levels. A comparative analysis of risk factors between hotspot countries and others indicated that gender and alcohol use exerted greater influence in hotspots than elsewhere. CONCLUSION: Although from 1990 to 2019, the highest growth in ASIR of CRC has been observed in African, Asian, and Latin American countries, the hotspots are still concentrated in Europe. In the identified hotspots, gender and alcohol use exert a more significant impact on CRC incidence compared with other countries. Thus, we should pay attention to countries where the CRC incidence is increasing and these risk factors.

4.
Artículo en Inglés | MEDLINE | ID: mdl-39271392

RESUMEN

BACKGROUND AND AIM: Hyperuricemia is associated with nonalcoholic fatty liver disease (NAFLD), whereas whether the association differed by hyperuricemia onset age remained unclear. This study sought to investigate the associations of hyperuricemia onset age with the risk of incident NAFLD across adulthood. METHODS AND RESULTS: Based on Kailuan prospective cohort, our analysis comprised 3318 new-onset hyperuricemia cases from 2006 to 2015 and 3318 age- and sex-matched controls who were randomly selected from the general population. The risk of NAFLD across the onset age groups (<45, 45-54, 55-64, and ≥65 years) were compared using multivariable-adjusted Cox regression models. During a median follow-up of 6.78 years, 744 (22.42%) hyperuricemia participants and 586 (17.66%) normouricemia participants were diagnosed with incident NAFLD. After adjusted for potential confounders, the risk of NAFLD was gradually attenuated with each decade increase in hyperuricemia onset age. The adjusted hazard ratio (95% confidence interval) was 1.62 (1.33-1.97) for hyperuricemia onset age <45 years, 1.26 (1.01-1.57) for age of 45-54 years, 1.24 (1.00-1.59) for age of 55-64 years, and 1.19 (0.90-1.71) for age ≥65 years, respectively. The trend remained robust among the multiple sensitivity analyses. CONCLUSIONS: The relative risk of incident NAFLD differed across hyperuricemia onset age-group, and the association was more evident in those with a younger age of hyperuricemia onset, highlighting the importance of performing early strategies on the prevention of NAFLD.

5.
ACS Appl Mater Interfaces ; 16(34): 45347-45355, 2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39141776

RESUMEN

Developing an effective method to stably enhance the quantum efficiency (QE) and extend the photoemission threshold of Cu photocathodes beyond the ultraviolet region could benefit the photoinjector for ultrafast electron source applications. The implementation of a 2D material protective layer is considered a promising approach to extending the operating lifetime of photocathodes. We propose that graphene can serve as an intermediate layer at the interface between photocathode material and low-work-function coating. The role of oxygen in the Cs/O activation process on the Cu surface is altered by the graphene interlayer. Besides, the few-layer graphene (FLG) surface could be more likely to induce the formation of Cs2O. Thus, the graphene-Cu composite photocathode can achieve an ultralow surface work function of down to 0.878 eV through Cs/O activation. The photoemission performance of the composite cathode with a FLG interlayer is significantly enhanced. The photocathode has an extended spectral response to the near-infrared region and a higher QE. At 350 nm, its QE is more than twice that of the cesiated bare Cu, reaching 0.247%. After degradation, the graphene-Cu cathode can be fully restored by reactivation, with remarkably enhanced stability. In addition, the composite cathode can be operated reliably under a poor vacuum pressure of over 4 × 10-6 Pa. This study validates a new method for incorporating 2D materials into photocathodes, offering novel approaches to explore robust and spectrum-extended photocathodes.

6.
Toxicology ; 508: 153925, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-39151608

RESUMEN

Prenatal exposure to dibutyl phthalate (DBP) has been reported to cause erectile dysfunction (ED) in adult offspring rats. However, its underlying mechanisms are not fully understood. Previously, we found that DBP activates the RhoA/ROCK pathway in the male reproductive system. This study investigated how prenatal exposure to DBP activates the RhoA/ROCK signalling pathway, leading to ED in male rat offspring. Pregnant rats were stratified into DBP-exposed and NC groups, with the exposed group receiving 750 milligrams per kilogram per day (mg/kg/day) of DBP through gavage from days 14-18 of gestation. DBP exposure activated the RhoA/ROCK pathway in the penile corpus cavernosum (CC) of descendants, causing smooth muscle cell contraction, fibrosis, and apoptosis, all of which contribute to ED. In vitro experiments confirmed that DBP induces apoptosis and RhoA/ROCK pathway activation in CC smooth muscle cells. Treatment of DBP-exposed offspring with the ROCK inhibitor Y-27632 for 8 weeks significantly improved smooth muscle cell condition, erectile function, and reduced fibrosis. Thus, prenatal DBP exposure induces ED in offspring through RhoA/ROCK pathway activation, and the ROCK inhibitor Y-27632 shows potential as an effective treatment for DBP-induced ED.


Asunto(s)
Apoptosis , Dibutil Ftalato , Disfunción Eréctil , Efectos Tardíos de la Exposición Prenatal , Ratas Sprague-Dawley , Transducción de Señal , Quinasas Asociadas a rho , Animales , Dibutil Ftalato/toxicidad , Masculino , Quinasas Asociadas a rho/metabolismo , Efectos Tardíos de la Exposición Prenatal/inducido químicamente , Embarazo , Femenino , Transducción de Señal/efectos de los fármacos , Disfunción Eréctil/inducido químicamente , Disfunción Eréctil/metabolismo , Ratas , Apoptosis/efectos de los fármacos , Proteína de Unión al GTP rhoA/metabolismo , Pene/efectos de los fármacos , Pene/metabolismo , Fibrosis , Piridinas/farmacología , Piridinas/toxicidad , Miocitos del Músculo Liso/efectos de los fármacos , Miocitos del Músculo Liso/metabolismo , Amidas , Proteínas de Unión al GTP rho
7.
Food Chem ; 460(Pt 3): 140655, 2024 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-39128365

RESUMEN

This study primarily investigated the improvement of high-dose Epigallocatechin-3-Gallate (EGCG)-induced deterioration of MP gel by soy protein isolate (SPI) addition. The results showed that EGCG could interact with MP, SPI, and HSPI (heated), indicating the competitive ability of SPI/HSPI against EGCG with MP. EGCG was encapsulated by SPI/HSPI with high encapsulation efficiency and antioxidation, with antioxidant activities of 78.5% âˆ¼ 79.2%. FTIR and molecular docking results revealed that MP, SPI, and HSPI interacted with EGCG through hydrogen bonding and hydrophobic interactions. SPI/HSPI competed with MP for EGCG, leading to the restoration of MHC and Actin bands, alleviating the aggregation caused by EGCG and oxidation. Additionally, SPI/HSPI-E significantly reduced the high cooking loss (23.71 and 26.65%) and gel strength (13.60 and 17.02%) induced by EGCG. Hence, SPI competed with MP for EGCG binding site to ameliorate MP gel properties, thereby alleviating the detrimental changes in MP caused by high-dose EGCG and oxidation.


Asunto(s)
Catequina , Geles , Simulación del Acoplamiento Molecular , Proteínas de Soja , Catequina/química , Catequina/análogos & derivados , Catequina/metabolismo , Catequina/farmacología , Proteínas de Soja/química , Proteínas de Soja/metabolismo , Geles/química , Antioxidantes/química , Antioxidantes/farmacología , Interacciones Hidrofóbicas e Hidrofílicas , Animales , Proteínas Musculares/química , Proteínas Musculares/metabolismo , Culinaria , Unión Proteica
8.
Nutr Metab Cardiovasc Dis ; 34(11): 2489-2497, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-39174429

RESUMEN

BACKGROUND AND AIMS: Risk factor modification may decrease the risk of cardiovascular disease (CVD). Whether risk factor modification can mitigate the effect of hyperuricemia on CVD is unclear. This study aimed to investigate the risk of CVD among individuals with hyperuricemia, according to risk factors on target, compared with controls without hyperuricemia. METHODS AND RESULTS: This prospective study included 91,722 participants free of CVD at baseline (2006-2007) of the Kailuan study. Individuals with hyperuricemia were categorized according to the number of seven selected risk factors within the guideline-recommended target range (nonsmoking, physical activity, healthy diet, guideline-recommended levels of body mass index, blood pressure, fasting blood glucose, and total cholesterol). During a median follow-up of 13.00 years, 671 out of 6740 individuals (9.96%) with hyperuricemia and 6301 out of 84,982 control subjects (7.41%) had incident CVD. Compared with control subjects without hyperuricemia, individuals with hyperuricemia who had 4 or 5 to 7 risk factors on target had no significant excess CVD risk, the hazard ratio (HR) (95% confidence internal [CI]) was 0.93 (0.79-1.10) and 0.88 (0.71-1.10), respectively. Among individuals with hyperuricemia, excess CVD risk decreased stepwise for a higher number of risk factors on target, the HR of CVD associated with per additional risk factor within target range was 0.82 (95% CI, 0.77-0.87). Similar results were yielded for CVD subtypes. CONCLUSIONS: Among individuals with hyperuricemia, excess CVD risk decreased stepwise for a higher number of risk factors within target.


Asunto(s)
Biomarcadores , Enfermedades Cardiovasculares , Factores de Riesgo de Enfermedad Cardiaca , Hiperuricemia , Ácido Úrico , Humanos , Hiperuricemia/epidemiología , Hiperuricemia/sangre , Hiperuricemia/diagnóstico , Masculino , Femenino , Persona de Mediana Edad , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/prevención & control , Estudios Prospectivos , Medición de Riesgo , Adulto , China/epidemiología , Incidencia , Biomarcadores/sangre , Factores de Tiempo , Ácido Úrico/sangre , Conducta de Reducción del Riesgo , Dieta Saludable , Pronóstico , Factores Protectores , Anciano , Fumar/epidemiología , Fumar/efectos adversos , Ejercicio Físico , Glucemia/metabolismo , Factores de Riesgo
9.
Hypertens Res ; 2024 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-39138364

RESUMEN

Systolic blood pressure (SBP) time in target (TTR) over months were associated with lower risk of adverse clinical outcomes in hypertensive patients, whether short-term of 24-h SBP TTR was effective in predicting heart failure (HF) risk in the general population remained unclear. This prospective study aimed to investigate the association of 24-h SBP TTR with HF in the real-world settings. Based on Kailuan study, 24-h SBP target range defined as 110-140 mmHg was calculated with linear interpolation. Among 5152 participants included in the analysis, 186 (3.61%) cases of incident HF occurred during a median follow-up of 6.96 years. Compared with participants with SBP TTR of 0 to <25%, those with TTR of 75% to 100% had 47% lower risk of HF (hazard ratio [HR], 0.53; 95% confidence interval [CI], 0.32-0.89). The restricted spline curve depicted an inverse relationship between SBP TTR and incident HF. Additionally, the addition of SBP TTR, rather than mean SBP and SBP variation, to a conventional risk model had an incremental effect on the predictive value for HF, with integrated discrimination improvement value of 0.31% (P = 0.0003) and category-free net reclassification improvement value of 19.79% (P = 0.0081). Higher SBP TTR was associated with a lower risk of incident HF. Efforts to attain SBP within 110 to 140 mmHg may be an effective strategy to prevent HF.

10.
JACC Asia ; 4(6): 444-453, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39100705

RESUMEN

Background: Previous studies on the direction of the association between arterial stiffness (AS) and chronic kidney disease (CKD) were inconsistent, leaving a knowledge gap in understanding the temporal sequence of the association. Objectives: This study sought to assess the temporal and longitudinal relationship between AS and CKD. Methods: The temporal relationship between AS measured by brachial ankle pulse wave velocity and CKD measured by estimated glomerular filtration rate (eGFR) was analyzed among 7,753 participants with repeated examinations in the Kailuan study using cross-lagged panel analysis. The longitudinal associations of AS status and vascular aging (VA) phenotype with incident CKD were analyzed among 10,535 participants. Results: The adjusted cross-lagged path coefficient (ß 1 = -0.03; 95% CI: -0.06 to -0.01; P < 0.0001) from baseline brachial ankle pulse wave velocity to follow-up eGFR was significantly greater than the path coefficient (ß 2 = -0.01; 95% CI: -0.02 to 0.01; P = 0.6202) from baseline eGFR to follow-up brachial ankle pulse wave velocity (P < 0.0001 for the difference). During a median follow-up of 8.48 years, 953 cases of incident CKD (9.05%) occurred. After adjustment for confounders, borderline (HR: 1.17; 95% CI: 1.08-1.38) and elevated AS (HR: 1.39; 95% CI: 1.12-1.72) was associated a higher risk of CKD, compared with normal AS. Consistently, supernormal VA (HR: 0.76; 95% CI: 0.66-0.86) was associated with a decreased and early VA (HR: 1.36; 95% CI: 1.29-1.43) was associated with an increased risk of CKD, compared with normal VA. Conclusions: AS appeared to precede the decrease in eGFR. Additionally, increased AS and early VA were associated with an increased risk of incident CKD.

11.
iScience ; 27(8): 110429, 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39104415

RESUMEN

This study investigated the effects of canagliflozin on myocardial dysfunction after cardiac arrest and cardiopulmonary resuscitation in diabetic rats and the underlying mechanisms. Male rats with type 2 diabetes mellitus (T2DM) were subjected to a modified epicardial fibrillation model. Pretreatment with canagliflozin (10 mg/kg/day) for four weeks improved ATP levels, post-resuscitation ejection fraction, acidosis, and hemodynamics. Canagliflozin also reduced myocardial edema, mitochondrial damage and, post-resuscitation autophagy levels. In vitro analyses showed that canagliflozin significantly reduced reactive oxygen species and preserved mitochondrial membrane potential. Using the PI3K/Akt pathway inhibitor Ly294002, canagliflozin was shown to attenuate hyperautophagy and cardiac injury induced by high glucose and hypoxia-reoxygenation through activation of the PI3K/Akt/mTOR pathway. This study highlights the therapeutic potential of canagliflozin in post-resuscitation myocardial dysfunction in diabetes, providing new insights for clinical treatment and experimental research.

12.
J Environ Manage ; 367: 122079, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39106800

RESUMEN

Trade network connects enterprises together, while its impact on corporate ESG performance is unknown. Drawing on unbalanced panel data of resource-based enterprises in China from 2009 to 2021, this study decomposes the trade network into purchasing network and sales network based on trade directions, and explores their impact on corporate ESG performance and the mechanisms involved. The findings indicate that: (1) The trade networks exhibit a negative correlation with corporate ESG performance. Meanwhile, purchasing network demonstrates a more pronounced adverse impact on corporate ESG than sales network. After a series of endogeneity tests, the above results still hold. (2) Heterogeneity analysis shows that trade networks have a more significant effect on the ESG performance of state-owned enterprises, mature enterprises and heavily polluting enterprises. And the most pronounced negative effect is observed in the governance (G) component of ESG. (3) Mechanism analysis reveals that trade networks negatively influence corporate ESG performance by impeding the progress of green innovation and internal control. (4) Accelerating digital transformation and intensifying government environmental regulations can mitigate the inhibitory impact of trade networks on corporate ESG performance. This study provides theoretical support and empirical evidence for resource-based enterprises to enhance ESG performance while reinforcing trade linkages.


Asunto(s)
Comercio , China , Conservación de los Recursos Naturales , Pueblos del Este de Asia
13.
Nat Commun ; 15(1): 6735, 2024 Aug 07.
Artículo en Inglés | MEDLINE | ID: mdl-39112446

RESUMEN

Improvements in the polarization of environmentally-friendly perovskite ferroelectrics have proved to be a challenging task in order to replace the toxic Pb-based counterparts. In contrast to common methods by complex chemical composition designs, we have formed Mn-inlaid antiphase boundaries in Mn-doped (K,Na)NbO3 thin films using pulsed laser deposition method. Here, we observed that mono- or bi-atomic layer of Mn has been identified to inlay along the antiphase boundaries to balance the charges originated from the deficiency of alkali ions and to induce the strain in the KNN films. Thus, rectangular saturated polarization-electric field hysteresis loops have been achieved, with a significantly improved twice remanent polarization of 114 µC/cm2 with an applied electric field of 606 kV/cm, which can be comparable to that of the typical Pb-based thin films. Moreover, we directly see the Mn occupation at the A-site of KNN perovskite structure using atomic-scale microstructure and composition analysis. The Mn-inlaid antiphase boundary can further enrich the understanding of perovskite crystal structure and give more possibilities for the design and optimization of perovskite materials.

14.
J Am Heart Assoc ; 13(16): e035820, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39119971

RESUMEN

BACKGROUND: Recent Mendelian randomization and meta-analysis highlight the relevance of MCP-1 (monocyte chemoattractant protein-1) in stroke. We aimed to investigate the associations between MCP-1 and clinical outcomes in patients with ischemic stroke or transient ischemic attack and test whether inflammation mediates or jointly contributes to the relationships. METHODS AND RESULTS: A total of 10 700 patients from the Third China National Stroke Registry study were included. Multivariable Cox regression was used for recurrent stroke and all-cause death, and logistic regression was used for poor functional outcome. Mediation analyses were performed to clarify whether inflammation mediates the associations. After adjusting for potential confounders, low MCP-1 level (<337.6 pg/mL) was associated with a reduced risk of all-cause death (hazard ratio [HR], 0.65 [95% CI, 0.51-0.82]) and poor functional outcome (odds ratio, 0.81 [95% CI, 0.70-0.94]) but was not associated with recurrent stroke (HR, 1.10 [95% CI, 0.95-1.27]), compared with high MCP-1 level (≥337.6 pg/mL). The association between MCP-1 and all-cause death was partially mediated by highly sensitive C-reactive protein, interleukin-6, and YKL-40 (Chitinase-3-like protein 1; mediated proportion: 7.4%, 10.5%, and 7.4%, respectively). The corresponding mediated proportion for poor functional outcome was 9.9%, 17.1%, and 7.1%, respectively. Patients with combined high levels of MCP-1 and inflammatory biomarkers had the highest risks of all-cause death and poor functional outcome. CONCLUSIONS: Low plasma MCP-1 level was associated with decreased risks of all-cause mortality and poor functional outcome after ischemic stroke or transient ischemic attack. Inflammation partially mediated and jointly contributed to the associations.


Asunto(s)
Biomarcadores , Quimiocina CCL2 , Ataque Isquémico Transitorio , Accidente Cerebrovascular Isquémico , Sistema de Registros , Humanos , Masculino , Quimiocina CCL2/sangre , Femenino , Biomarcadores/sangre , Ataque Isquémico Transitorio/sangre , Ataque Isquémico Transitorio/mortalidad , Ataque Isquémico Transitorio/diagnóstico , Accidente Cerebrovascular Isquémico/sangre , Accidente Cerebrovascular Isquémico/mortalidad , Accidente Cerebrovascular Isquémico/diagnóstico , Accidente Cerebrovascular Isquémico/epidemiología , Persona de Mediana Edad , Anciano , Pronóstico , China/epidemiología , Inflamación/sangre , Recurrencia , Medición de Riesgo , Factores de Riesgo , Causas de Muerte
15.
Small ; : e2401886, 2024 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-39185812

RESUMEN

Achilles tendinopathy (AT) is an injury caused by overuse of the Achilles tendon or sudden force on the Achilles tendon, with a considerable inflammatory infiltrate. As Achilles tendinopathy progresses, inflammation and inflammatory factors affect the remodeling of the extracellular matrix (ECM) of the tendon. Gastrodin(Gas), the main active ingredient of Astrodia has anti-inflammatory, antioxidant, and anti-apoptotic properties. The small intestinal submucosa (SIS) is a naturally decellularized extracellular matrix(dECM)material and has a high content of growth factors as well as good biocompatibility. However, the reparative effects of SIS and Gas on Achilles tendinopathy and their underlying mechanisms remain unknown. Here, it is found that SIS hydrogel loaded with gastrodin restored the mechanical strength of the Achilles tendon, facilitated ECM remodeling, and restored ordered collagen arrangement by promoting the translocation of protein synthesis. It also decreases the expression of inflammatory factors and reduces the infiltration of inflammatory cells by inhibiting the NF-κB signaling pathway. It is believed that through further research, Gas + SIS may be used in the future for the treatment of Achilles tendinopathy and other Achilles tendon injury disorders.

16.
Angew Chem Int Ed Engl ; : e202412637, 2024 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-39044283

RESUMEN

The dynamic structure evolution of heterogeneous catalysts during reaction has gained great attention recently. However, controllably manipulating dynamic process and then feeding back catalyst design to extend the lifetime remains challenging. Herein, we proposed an entropy variation strategy to develop a dynamic CuZn-Co/HEOs catalyst, in which the non-active Co nano-islands play a crucial role in controlling thermal effect via timely capturing and utilizing reaction heat generated on the adjacent active CuZn alloys, thus solving the deactivation problem of Cu-based catalysts. Specifically, heat sensitive Co nano-islands experienced an entropy increasing process of slowly redispersion during the reaction. Under such heat dissipation effect, the CuZn-Co/HEOs catalyst exhibited 95.7% ethylene selectivity and amazing long-term stability (>530 h) in the typical exothermic acetylene hydrogenation. Aiming at cultivating it as a catalyst with promising industrial potential, we proposed a simple regeneration approach via an entropy decreasing process.

17.
Nat Cell Biol ; 26(7): 1139-1153, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38992139

RESUMEN

The mammalian Golgi is composed of stacks that are laterally connected into a continuous ribbon-like structure. The integrity and function of the ribbon is disrupted under stress conditions, but the molecular mechanisms remain unclear. Here we show that the ribbon is maintained by biomolecular condensates of RNA and the Golgi matrix protein GM130 (GOLGA2). We identify GM130 as a membrane-bound RNA-binding protein, which directly recruits RNA and associated RNA-binding proteins to the Golgi membrane. Acute degradation of RNA or GM130 in cells disrupts the ribbon. Under stress conditions, RNA dissociates from GM130 and the ribbon is disjointed, but after the cells recover from stress the ribbon is restored. When overexpressed in cells, GM130 forms RNA-dependent liquid-like condensates. GM130 contains an intrinsically disordered domain at its amino terminus, which binds RNA to induce liquid-liquid phase separation. These co-condensates are sufficient to link purified Golgi membranes, reconstructing lateral linking of stacks into a ribbon-like structure. Together, these studies show that RNA acts as a structural biopolymer that together with GM130 maintains the integrity of the Golgi ribbon.


Asunto(s)
Autoantígenos , Aparato de Golgi , Proteínas de la Membrana , ARN , Aparato de Golgi/metabolismo , Humanos , Autoantígenos/metabolismo , Autoantígenos/genética , Autoantígenos/química , Proteínas de la Membrana/metabolismo , Proteínas de la Membrana/genética , Proteínas de la Membrana/química , ARN/metabolismo , ARN/genética , Proteínas de Unión al ARN/metabolismo , Proteínas de Unión al ARN/genética , Proteínas de Unión al ARN/química , Células HeLa , Condensados Biomoleculares/metabolismo , Unión Proteica , Membranas Intracelulares/metabolismo , Animales , Células HEK293
18.
Cir Cir ; 92(4): 456-468, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39079243

RESUMEN

OBJECTIVE: The objective of the study is to systematically analyze the safety and efficacy of radiofrequency ablation (RFA) therapy for the treatment of patients with knee osteoarthritis (KOA) and to assess the methodological quality of the published studies. METHODS: By searching the PubMed, Embase, and CENTRAL databases, we retrieved and collected relevant randomized controlled trials (RCTs) published up to June 26, 2023. RESULTS: We included 13 RCTs, involving a total of 865 patients. Compared with the control group, the RFA group had significantly reduced pain scores at 1-2 weeks, 4 weeks, 12 weeks, and 24 weeks post-treatment, with standardized mean differences of -1.24 (95% confidence interval [CI]: -1.99--0.49; p = 0.001; I2 = 91%), -0.76 (95% CI: -1.27--0.26; p = 0.003; I2 = 76%), -1.70 (95% CI: -2.56--0.83; p = 0.0001; I2 = 94%), and -2.26 (95% CI: -3.49--1.04; p = 0.0003; I2 = 95%). CONCLUSIONS: RFA, as an adjunctive treatment modality, demonstrates potential in the treatment of patients with KOA. This method may become a primary treatment strategy for these patients.


OBJETIVO: Analizar sistemáticamente la seguridad y la eficacia de la ablación por radiofrecuencia en pacientes con osteoartritis de rodilla y evaluar la calidad metodológica de los estudios publicados. MÉTODO: Mediante una búsqueda en las bases de datos PubMed, EMBASE y CENTRAL, recuperamos y recopilamos los ensayos aleatorizados controlados relevantes publicados hasta el 26 de junio de 2023. RESULTADOS: Se incluyeron 13 ensayos aleatorizados controlados que involucraron a 865 pacientes. En comparación con el grupo control, el grupo de ablación por radiofrecuencia registró una reducción significativa en la puntuación de dolor a 1-2 semanas, 4 semanas, 12 semanas y 24 semanas del tratamiento, con una diferencia media estandarizada de −1.24 (intervalo de confianza del 95% [IC95%]: −1.99 a −0.49; p = 0.001; I2 = 91%), de −0.76 (IC95%: −1.27 a −0.26; p = 0.003; I2 = 76%), de −1.70 (IC95%: −2.56 a − 0.83; p = 0.0001%; I2 = 2.94%) y de ­ 2.26 (IC95%: −3.49 a −1.04; p = 0.0003; I2 = 95%), respectivamente. CONCLUSIONES: La ablación por radiofrecuencia como tratamiento adyuvante muestra potencial en el tratamiento de pacientes con osteoartritis de rodilla. Este método puede convertirse en la principal estrategia terapéutica para estos pacientes.


Asunto(s)
Osteoartritis de la Rodilla , Ablación por Radiofrecuencia , Ensayos Clínicos Controlados Aleatorios como Asunto , Humanos , Osteoartritis de la Rodilla/cirugía , Ablación por Radiofrecuencia/métodos , Resultado del Tratamiento , Dimensión del Dolor
19.
Hellenic J Cardiol ; 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38838914

RESUMEN

OBJECTIVE: Previous studies have shown that remnant cholesterol (RC) is associated with cardiovascular disease (CVD). The study aimed to identify the association of RC and the discordance between RC and lipoprotein cholesterol (LDL-C) with CVD. METHODS: Data were obtained from the Kailuan study. RC was calculated as the non-high-density lipoprotein cholesterol minus LDL-C. Discordant RC and LDL-C were defined by percentile difference and clinical cut-off points. Cox proportional hazard models were used to explore the association of RC and the discordance between RC and LDL-C with CVD. RESULTS: A total of 96,769 participants were included, with a median age of 51.61 years and 79.56% were male. There was a significant association between RC levels and the risk of CVD, with an HR of 1.10 (95% CI, 1.08-1.13) in the continuous analysis. The group with a discordantly high RC had a significant increase in CVD, MI, and stroke risk, with HRs of 1.18 (95% CI, 1.10-1.26), 1.23 (1.06-1.43), and 1.15 (1.07-1.24), respectively. Compared with the group with low LDL-C and low RC, the group with low LDL-C and high RC had significantly higher incidences of CVD (HR, 1.33 [95% CI, 1.26-1.40]), MI (HR, 1.59 [95% CI, 1.41-1.80]), and stroke (HR, 1.28 [95% CI, 1.20-1.35]). CONCLUSIONS: Elevated levels of RC and discordantly high RC with LDL-C were associated with the risk of CVD, MI, and stroke. These findings demonstrate the clinical significance of identifying residual risk related to RC.

20.
Angew Chem Int Ed Engl ; 63(35): e202405337, 2024 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-38877857

RESUMEN

In this work, six benzothioxanthene-based oxime esters were employed as photoinitiators for photopolymerization under visible light (LED) and sunlight. Their abilities to behave as Type I photoinitiators by mean of a photocleavage mechanism of oxime esters but also in multicomponent photoinitiating systems with an iodonium salt (through an electron transfer mechanism) were both explored with the different structures. Due to their broad absorption spectra tailing up 600 nm, photoinitiating properties of the benzothioxanthene-based oxime esters were systematically tested under excitation with low-intensity LED light at wavelengths of 405 nm and 450 nm. Additionally, parallel to the polymerization tests done under artificial light, the different benzothioxanthene-based oxime esters were also investigated as solar photoinitiators and displayed a high reactivity in France (Western Europe) even in winter conditions. For the best candidates i.e. the most reactive structures, direct laser write experiments were carried out, evidencing the interest of these structures.

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