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2.
Front Neurol ; 15: 1328911, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39144713

RESUMEN

Objective: To systematically evaluate the efficacy of hyperbaric oxygen therapy (HBOT) as an adjunct therapy for treating sleep disorders in patients with Parkinson's disease (PD). Methods: We conducted comprehensive searches in eight databases from inception through September 2023, including PubMed, Cochrane Library, Embase, Web of Science, SinoMed, China National Knowledge Infrastructure (CNKI), China Science and Technology Periodical Database (VIP), and Wanfang Database. The objective was to identify randomized controlled trials (RCTs) evaluating HBOT's effectiveness in alleviating sleep disorder symptoms in PD patients as an adjunct therapy. Literature screening and data extraction were independently executed by the authors. Meta-analyses were performed using Review Manager 5.3 software, and publication bias and sensitivity analyses were assessed using Stata 17.0 software. Results: Seven RCTs involving 461 participants were included. The findings revealed that the addition of HBOT significantly enhanced sleep efficiency (MD = 15.26, 95% CI [10.89, 19.63], p < 0.00001), increased time in bed (MD = 69.65, 95% CI [43.01, 96.30], p < 0.00001), total sleep time (MD = 75.87, 95% CI [25.42, 126.31], p = 0.003), slow-wave sleep (SWS) time (MD = 6.14, 95% CI [3.95, 8.34], p < 0.00001), and rapid eye movement sleep (REM) time (MD = 4.07, 95% CI [2.05, 6.08], p < 0.0001), and reduced awakening frequency (MD = -11.55, 95% CI [-15.42, -7.68], p < 0.00001) and sleep latency (MD = -6.60, 95% CI [-9.43, -3.89], p < 0.00001). Additionally, significant improvements were observed in the Pittsburgh Sleep Quality Index (PSQI) (MD = -2.52, 95% CI [-2.85, -2.18], p < 0.00001), Epworth Sleepiness Scale (ESS) (MD = -2.90, 95% CI [-3.34, -2.47], p < 0.00001), Unified Parkinson's Disease Rating Scale Part III (UPDRS III) (MD = -1.32, 95% CI [-2.16, -0.47], p = 0.002), and Hoehn and Yahr grading (H-Y grading) (MD = -0.15, 95% CI [-0.28, -0.01], p = 0.03). Conclusion: The current meta-analysis supports the efficacy of HBOT as an adjunct therapy in managing sleep disorders in PD patients. It is recommended for PD patients experiencing sleep disturbances.Systematic review registration:https://www.crd.york.ac.uk/, identifier: CRD42023462201.

3.
Am J Alzheimers Dis Other Demen ; 39: 15333175241275215, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39133478

RESUMEN

OBJECTIVE: To assess the role of Machine Learning (ML) in identification critical factors of dementia and mild cognitive impairment. METHODS: 371 elderly individuals were ultimately included in the ML analysis. Demographic information (including gender, age, parity, visual acuity, auditory function, mobility, and medication history) and 35 features from 10 assessment scales were used for modeling. Five machine learning classifiers were used for evaluation, employing a procedure involving feature extraction, selection, model training, and performance assessment to identify key indicative factors. RESULTS: The Random Forest model, after data preprocessing, Information Gain, and Meta-analysis, utilized three training features and four meta-features, achieving an area under the curve of 0.961 and a accuracy of 0.894, showcasing exceptional accuracy for the identification of dementia and mild cognitive impairment. CONCLUSIONS: ML serves as a identification tool for dementia and mild cognitive impairment. Using Information Gain and Meta-feature analysis, Clinical Dementia Rating (CDR) and Neuropsychiatric Inventory (NPI) scale information emerged as crucial for training the Random Forest model.


Asunto(s)
Disfunción Cognitiva , Demencia , Aprendizaje Automático , Humanos , Disfunción Cognitiva/diagnóstico , Femenino , Anciano , Masculino , Demencia/diagnóstico , China , Anciano de 80 o más Años , Pruebas Neuropsicológicas/normas , Pruebas Neuropsicológicas/estadística & datos numéricos , Pueblos del Este de Asia
5.
World J Gastrointest Oncol ; 16(6): 2476-2486, 2024 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-38994164

RESUMEN

BACKGROUND: The objectives of this study were to assess the safety and efficacy of drug-eluting bead transarterial chemoembolization (DEB-TACE) as neoadjuvant therapy before liver transplantation (LT) for advanced-stage hepatocellular carcinoma (HCC) and to analyze the prognostic factors. AIM: To determine whether DEB-TACE before LT is superior to LT for advanced-stage HCC. METHODS: A total of 99 individuals diagnosed with advanced HCC were studied retrospectively. The participants were categorized into the following two groups based on whether they had received DEB-TACE before LT: DEB-TACE group (n = 45) and control group (n = 54). The participants were further divided into two subgroups based on the presence or absence of segmental portal vein tumor thrombus (PVTT). The DEB-TACE group consisted of two subgroups: Group A (n = 31) without PVTT and group B (n = 14) with PVTT. The control group also had two subgroups: Group C (n = 37) without PVTT and group D (n = 17) with PVTT. Data on patient demographics, disease characteristics, therapy response, and adverse events (AEs) were collected. The overall survival (OS) and recurrence-free survival (RFS) rates were assessed using Kaplan-Meier curves. Univariate and multivariate Cox regression analyses were conducted to determine the parameters that were independently related to OS and RFS. RESULTS: The DEB-TACE group exhibited an overall response rate of 86.6%. Following therapy, there was a significant decrease in the median alpha-fetoprotein (AFP) level (275.1 ng/mL vs 41.7 ng/mL, P < 0.001). The main AE was post-embolization syndrome. The 2-year rates of RFS and OS were significantly higher in the DEB-TACE group than in the control group (68.9% vs 38.9%, P = 0.003; 86.7% vs 63.0%, P = 0.008). Within the subgroups, group A had higher 2-year rates of RFS and OS compared to group C (71.0% vs 45.9%, P = 0.038; 83.8% vs 62.2%, P = 0.047). The 2-year RFS rate of group B was markedly superior to that of group D (64.3% vs 23.5%, P = 0.002). Results from multivariate analyses showed that pre-LT DEB-TACE [hazard ratio (HR) = 2.73, 95% confidence interval (CI): 1.44-5.14, P = 0.04], overall target tumor diameter ≤ 7 cm (HR = 1.98, 95%CI: 1.05-3.75, P = 0.035), and AFP level ≤ 400 ng/mL (HR = 2.34; 95%CI: 1.30-4.19, P = 0.009) were significant risk factors for RFS. Additionally, pre-LT DEB-TACE (HR = 3.15, 95%CI: 1.43-6.96, P = 0.004) was identified as a significant risk factor for OS. CONCLUSION: DEB-TACE is a safe and efficient therapy for advanced-stage HCC and also enhances patient survival after LT.

6.
Adv Sci (Weinh) ; : e2309473, 2024 Jul 08.
Artículo en Inglés | MEDLINE | ID: mdl-38978348

RESUMEN

Melatonin (N-acetyl-5-methoxytryptamine) is reported to improve mood disorders in perimenopausal women and gut microbiome composition is altered during menopausal period. The possible role of microbiome in the treatment effect of melatonin on menopausal depression remains unknown. Here, it is shown that melatonin treatment reverses the gut microbiota dysbiosis and depressive-like behaviors in ovariectomy (OVX) operated mice. This effect of melatonin is prevented by antibiotic cocktails (ABX) treatment. Transferring microbiota harvested from adolescent female mice to OVX-operated mice is sufficient to ameliorate depressive-like behaviors. Conversely, microbiota transplantation from OVX-operated mice or melatonin-treated OVX-operated mice to naïve recipient mice exhibits similar phenotypes to donors. The colonization of Alistipes Inops, which is abundant in OVX-operated mice, confers the recipient with depressive-like behaviors. Further investigation indicates that the expansion of Alistipes Inops induced by OVX leads to the degradation of intestinal tryptophan, which destroys systemic tryptophan availability. Melatonin supplementation restores systemic tryptophan metabolic disorders by suppressing the growth of Alistipes Inops, which ameliorates depressive-like behaviors. These results highlight the previously unrecognized role of Alistipes Inops in the modulation of OVX-induced behavioral disorders and suggest that the application of melatonin to inhibit Alistipes Inops may serve as a potential strategy for preventing menopausal depressive symptoms.

7.
Ecotoxicol Environ Saf ; 283: 116798, 2024 Jul 30.
Artículo en Inglés | MEDLINE | ID: mdl-39083874

RESUMEN

Propylparaben (PrPB) is a known endocrine disrupting chemicals that is widely applied as preservative in pharmaceuticals, food and cosmetics. PrPB has been detected in human urine samples and human serum and has been proven to cause functional decline in reproduction. However, the direct effects of PrPB on mammalian oocyte are still unknown. Here, we demonstrationed that exposure to PrPB disturbed mouse oocyte maturation in vitro, causing meiotic resumption arrest and first polar body extrusion failure. Our results indicated that 600 µM PrPB reduced the rate of oocyte germinal vesicle breakdown (GVBD). Further research revealed that PrPB caused mitochondrial dysfunction and oxidative stress, which led to oocyte DNA damage. This damage further disturbed the activity of the maturation promoting factor (MPF) complex Cyclin B1/ Cyclin-dependent kinase 1 (CDK1) and induced G2/M arrest. Subsequent experiments revealed that PrPB exposure can lead to spindle morphology disorder and chromosome misalignment due to unstable microtubules. In addition, PrPB adversely affected the attachment between microtubules and kinetochore, resulting in persistent activation of BUB3 amd BubR1, which are two spindle-assembly checkpoint (SAC) protein. Taken together, our studies indicated that PrPB damaged mouse oocyte maturation via disrupting MPF related G2/M transition and SAC depended metaphase-anaphase transition.

8.
Biochim Biophys Acta Mol Basis Dis ; 1870(7): 167349, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39002703

RESUMEN

Asthma is a chronic respiratory disease characterized by airway inflammation and remodeling. Epithelial-mesenchymal transition (EMT) of bronchial epithelial cells is considered to be a crucial player in asthma. Methyltransferase-like 14 (METTL14), an RNA methyltransferase, is implicated in multiple pathological processes, including EMT, cell proliferation and migration. However, the role of METTL14 in asthma remains uncertain. This research aimed to explore the biological functions of METTL14 in asthma and its underlying upstream mechanisms. METTL14 expression was down-regulated in asthmatic from three GEO datasets (GSE104468, GSE165934, and GSE74986). Consistent with this trend, METTL14 was decreased in the lung tissues of OVA-induced asthmatic mice and transforming growth factor-ß1 (TGF-ß1)-stimulated human bronchial epithelial cells (Beas-2B) in this study. Overexpression of METTL14 caused reduction in mesenchymal markers (FN1, N-cad, Col-1 and α-SMA) in TGF-ß1-treated cells, but caused increase in epithelial markers (E-cad), thus inhibiting EMT. Also, METTL14 suppressed the proliferation and migration ability of TGF-ß1-treated Beas-2B cells. Two transcription factors, ETS1 and RBPJ, could both bind to the promoter region of METTL14 and drive its expression. Elevating METTL14 expression could reversed EMT, cell proliferation and migration promoted by ETS1 or RBPJ deficiency. These results indicate that the ETS1/METTL14 and RBPJ/METTL14 transcription axes exhibit anti-EMT, anti-proliferation and anti-migration functions in TGF-ß1-induced bronchial epithelial cells, implying that METTL14 may be considered an alternative candidate target for the treatment of asthma.


Asunto(s)
Asma , Bronquios , Células Epiteliales , Transición Epitelial-Mesenquimal , Metiltransferasas , Proteína Proto-Oncogénica c-ets-1 , Factor de Crecimiento Transformador beta1 , Humanos , Factor de Crecimiento Transformador beta1/metabolismo , Factor de Crecimiento Transformador beta1/genética , Metiltransferasas/metabolismo , Metiltransferasas/genética , Animales , Bronquios/metabolismo , Bronquios/patología , Bronquios/citología , Células Epiteliales/metabolismo , Células Epiteliales/patología , Ratones , Proteína Proto-Oncogénica c-ets-1/metabolismo , Proteína Proto-Oncogénica c-ets-1/genética , Asma/patología , Asma/metabolismo , Asma/genética , Línea Celular , Proliferación Celular , Ratones Endogámicos BALB C , Movimiento Celular , Regulación de la Expresión Génica/efectos de los fármacos
9.
Plants (Basel) ; 13(11)2024 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-38891266

RESUMEN

Rodents, such as those that feed on plants and nest in plant roots, can significantly affect the growth and development of desert plants. The aim of this study was to investigate the effects of Rhombomys opimus disturbance on the photosynthetic characteristics and nutrient status of Haloxylon ammodendron at different growth stages in the Gurbantunggut Desert. The effects of great gerbil disturbance on the photosynthetic characteristics of H. ammodendron at different growth stages were investigated by measuring the gas exchange parameters, instantaneous water use efficiency, and chlorophyll fluorescence parameters of H. ammodendron at different ages (young, middle, and adult) under the disturbance of great gerbils. The soil nutrients in the assimilated branches and rhizosphere of H. ammodendron at different growth stages were tracked to reveal the relationship between the H. ammodendron nutrient content and gerbil disturbance. The results showed that great gerbil disturbance decreased the organic carbon content in the rhizosphere soil of adult H. ammodendron and increased the total nitrogen content in the rhizosphere soil and the nitrogen and potassium contents in the assimilated branches at each growth stage. The net photosynthetic rate and instantaneous water use efficiency of H. ammodendron decreased at each growth stage, and the maximum photochemical efficiency and non-photochemical quenching parameters of the young H. ammodendron decreased. However, the actual photochemical efficiency and photochemical parameters of the middle H. ammodendron increased. It was concluded that the disturbance of great gerbils decreased the photosynthetic capacity of H. ammodendron and increased the content of total nitrogen in the soil and nitrogen and potassium in the plant. This study revealed that the Gurbantunggut Desert great gerbil and H. ammodendron do not have a simple predation relationship. It laid a foundation for the study of the moderate disturbance threshold and better use of the mutually beneficial relationship between the two.

10.
Sci Total Environ ; 944: 173928, 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-38871308

RESUMEN

Mercury (Hg) pollution in soil has grown into a severe environmental issue. Effective in situ immobilization techniques are crucially demanded. In this study, we explored the application of carboxymethyl cellulose stabilized iron sulfide nanoparticles (CMC-FeS) for in situ immobilization of Hg in soil. CMC-FeS (a CMC-to-FeS molar ratio of 0.0004) was prepared via the reaction between FeSO4 and Na2S using CMC as a stabilizer. Remedying the Hg-polluted soil using 0.03 % CMC-FeS via batch experiments effectively reduced the acid leachable Hg by 97.5 % upon equilibrium after 71 days. Column elution tests demonstrated that the addition of CMC-FeS decreased the peak Hg concentration by 89.9 % and the total Hg mass eluted by 94.9 % after 523 pore volumes. CMC-FeS immobilized Hg in soil via chemical precipitation, ion exchange, and surface complexation. After the CMC-FeS treatment, Hg was transformed from more available exchangeable, carbonate-bound, and organic material-bound forms into the less available residual fraction, reducing the environmental risk of soil Hg from medium to low. The application of CMC-FeS boosted the soil enzyme activities and enhanced the soil bacterial diversity whereas decreased the production of methylmercury. CMC-FeS also facilitated long-term immobilization of Hg in soil. The acid leachable Hg and relative Hg bioaccessibility was decreased. Lift cycle assessment indicated that the preparation and application of CMC-FeS for in situ Hg remediation in soil met green chemistry principles. The present study confirms that CMC-FeS can be applied as an efficient and "green" amending agent for long-term Hg immobilization in soil/sediment.

11.
Transpl Immunol ; 85: 102071, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38866187

RESUMEN

BACKGROUND: To improve liver organ allocation, the model for end-stage liver disease (MELD) score was adopted in candidates reflecting the severity of liver disease and the physical condition of patients. Inflammatory markers are prognostic factors for various cancers and play prognostic roles in patients after liver transplantation (LT) for hepatocellular carcinoma (HCC). Researchers focused more on pre-LT inflammatory markers, while the role of dynamic change of these inflammatory markers is still unknown. The purpose of this study was to estimate the prognostic value of pre-LT and post-LT inflammatory markers. MATERIAL AND METHODS: We collected the pre-LT complete blood count and the post-LT result with highest count of white blood cells within 48 h. Platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio, monocyte-to-lymphocyte ratio and systemic immune-inflammation index were calculated, and their prognostic roles were analyzed for their MELD scores. RESULTS: This retrospective two-center cohort study enrolled 290 patients after LT for HCC. Multivariate analysis identified pre-LT PLR as independent risk factor for recurrence-free survival (RFS) [HR (95%CI): 1.002 (1.000-1.003), p = 0.023]. A high pre-LT PLR or post-LT PLR were associated with poorer RFS (p < 0.001 and p = 0.004, respectively). Based on the MELD scores, the pre-LT PLR value was able to predict the RFS in high MELD group (p < 0.001) but had no predictive power in low MELD group (p = 0.076). On the contrary, the post-LT PLR value was better to predict the overall RFS value in low MELD group (p = 0.007) but could not predict the overall RFS value in high MELD group (p = 0.136). CONCLUSIONS: Both pre-LT PLR and post-LT PLR demonstrated prognostic value in patients following LT for HCC. Monitoring PLR values based on the MELD score can improve the predictive prognosis and more effectively guide the individual decisions for the postoperative intervention.


Asunto(s)
Plaquetas , Carcinoma Hepatocelular , Enfermedad Hepática en Estado Terminal , Neoplasias Hepáticas , Trasplante de Hígado , Linfocitos , Humanos , Carcinoma Hepatocelular/cirugía , Carcinoma Hepatocelular/mortalidad , Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/cirugía , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/inmunología , Masculino , Femenino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Linfocitos/inmunología , Enfermedad Hepática en Estado Terminal/cirugía , Enfermedad Hepática en Estado Terminal/diagnóstico , Enfermedad Hepática en Estado Terminal/mortalidad , Recuento de Plaquetas , Adulto , Recuento de Linfocitos , Anciano , Índice de Severidad de la Enfermedad
12.
Gels ; 10(5)2024 May 19.
Artículo en Inglés | MEDLINE | ID: mdl-38786264

RESUMEN

Emulsified meat products contain high animal fat content, and excessive intake of animal fat is not good for health, so people are paying more and more attention to reduced-fat meat products. This study investigated the impact of varying proportions of pork back-fat and/or resistant starch on the proximate composition, water and fat retention, texture properties, color, and rheology characteristic of pork batter. The results found that replacing pork back-fat with resistant starch and ice water significantly decreased the total lipid and energy contents of cooked pork batter (p < 0.05) while improving emulsion stability, cooking yield, texture, and rheology properties. Additionally, when the pork back-fat replacement ratio was no more than 50%, there was a significant increase in emulsion stability, cooking yield, hardiness, springiness, cohesiveness, chewiness, and L* and G' values (p < 0.05). Furthermore, resistant starch and ice water enhanced myosin head and tail thermal stability and increased G' value at 80 °C. However, the initial relaxation times significantly decreased (p < 0.05) and the peak ratio of P21 significantly increased from 84.62% to 94.03%, suggesting reduced fluidity of water. In conclusion, it is feasible to use resistant starch and ice water as a substitute for pork back-fat in order to produce reduced-fat pork batter with favorable gel and rheology properties.

13.
Sci Technol Adv Mater ; 25(1): 2351791, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38817250

RESUMEN

Targeted nanoparticles offer potential to selectively deliver therapeutics to cells; however, their subcellular fate following endocytosis must be understood to properly design mechanisms of drug release. Here we describe a nanoparticle platform and associated cell-based assay to observe lysosome trafficking of targeted nanoparticles in live cells. The nanoparticle platform utilizes two fluorescent dyes loaded onto PEG-poly(glutamic acid) and PEG-poly(Lysine) block co-polymers that also comprise azide reactive handles on PEG termini to attach antibody-based targeting ligands. Fluorophores were selected to be pH-sensitive (pHrodo Red) or pH-insensitive (Alexafluor 488) to report when nanoparticles enter low pH lysosomes. Dye-labelled block co-polymers were further assembled into polyion complex micelle nanoparticles and crosslinked through amide bond formation to form stable nano-scaffolds for ligand attachment. Cell binding and lysosome trafficking was determined in live cells by fluorescence imaging in 96-well plates and quantification of red- and green-fluorescence signals over time. The platform and assay was validated for selection of optimal antibody-derived targeting ligands directed towards CD22 for nanoparticle delivery. Kinetic analysis of uptake and lysosome trafficking indicated differences between ligand types and the ligand with the highest lysosome trafficking efficiency translated into effective DNA delivery with nanoparticles bearing the optimal ligand.


The ability of this pH-sensitive reporter platform to rapidly screen ligands in nanoparticle format will enable identification and production of targeted NPs with desired lysosome trafficking properties.

14.
Mol Cell ; 84(10): 1964-1979.e6, 2024 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-38759628

RESUMEN

The role of the mitochondrial electron transport chain (ETC) in regulating ferroptosis is not fully elucidated. Here, we reveal that pharmacological inhibition of the ETC complex I reduces ubiquinol levels while decreasing ATP levels and activating AMP-activated protein kinase (AMPK), the two effects known for their roles in promoting and suppressing ferroptosis, respectively. Consequently, the impact of complex I inhibitors on ferroptosis induced by glutathione peroxidase 4 (GPX4) inhibition is limited. The pharmacological inhibition of complex I in LKB1-AMPK-inactivated cells, or genetic ablation of complex I (which does not trigger apparent AMPK activation), abrogates the AMPK-mediated ferroptosis-suppressive effect and sensitizes cancer cells to GPX4-inactivation-induced ferroptosis. Furthermore, complex I inhibition synergizes with radiotherapy (RT) to selectively suppress the growth of LKB1-deficient tumors by inducing ferroptosis in mouse models. Our data demonstrate a multifaceted role of complex I in regulating ferroptosis and propose a ferroptosis-inducing therapeutic strategy for LKB1-deficient cancers.


Asunto(s)
Proteínas Quinasas Activadas por AMP , Complejo I de Transporte de Electrón , Ferroptosis , Animales , Femenino , Humanos , Ratones , Quinasas de la Proteína-Quinasa Activada por el AMP/genética , Proteínas Quinasas Activadas por AMP/metabolismo , Proteínas Quinasas Activadas por AMP/genética , Línea Celular Tumoral , Complejo I de Transporte de Electrón/metabolismo , Complejo I de Transporte de Electrón/genética , Ferroptosis/genética , Ferroptosis/efectos de los fármacos , Mitocondrias/metabolismo , Mitocondrias/genética , Mitocondrias/efectos de los fármacos , Neoplasias/genética , Neoplasias/patología , Neoplasias/metabolismo , Neoplasias/tratamiento farmacológico , Fosfolípido Hidroperóxido Glutatión Peroxidasa/metabolismo , Fosfolípido Hidroperóxido Glutatión Peroxidasa/genética , Proteínas Serina-Treonina Quinasas/metabolismo , Proteínas Serina-Treonina Quinasas/genética , Transducción de Señal , Ensayos Antitumor por Modelo de Xenoinjerto
15.
Sci Total Environ ; 927: 172242, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38582122

RESUMEN

Bacterial adhesion plays a vital role in forming and shaping the structure of electroactive biofilms that are essential for the performance of bioelectrochemical systems (BESs). Type IV pili are known to mediate cell adhesion in many Gram-negative bacteria, but the mechanism of pili-mediated cell adhesion of Geobacter species on anode surface remains unclear. Herein, a minor pilin PilV2 was found to be essential for cell adhesion ability of Geobacter sulfurreducens since the lack of pilV2 gene depressed the cell adhesion capability by 81.2% in microplate and the anodic biofilm density by 23.1 % at -0.1 V and 37.7 % at -0.3 V in BESs. The less cohesiveness of mutant biofilms increased the charge transfer resistance and biofilm resistance, which correspondingly lowered current generation of the pilV2-deficient strain by up to 63.2 % compared with that of the wild-type strain in BESs. The deletion of pilV2 posed an insignificant effect on the production of extracellular polysaccharides, pili, extracellular cytochromes and electron shuttles that are involved in biofilm formation or extracellular electron transfer (EET) process. This study demonstrated the significance of pilV2 gene in cell adhesion and biofilm formation of G. sulfurreducens, as well as the importance of pili-mediated adhesion for EET of electroactive biofilm.


Asunto(s)
Adhesión Bacteriana , Biopelículas , Proteínas Fimbrias , Geobacter , Geobacter/fisiología , Geobacter/genética , Proteínas Fimbrias/genética , Proteínas Fimbrias/metabolismo , Fimbrias Bacterianas/fisiología , Fimbrias Bacterianas/metabolismo , Fuentes de Energía Bioeléctrica
16.
J Surg Res ; 298: 251-259, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38636181

RESUMEN

INTRODUCTION: This study is a retrospective study. This study aims to explore the association between lobectomy in lung cancer patients and subsequent compensatory lung growth (CLG), and to identify factors that may be associated with variations in CLG. METHODS: 207 lung cancer patients who underwent lobectomy at Yunnan Cancer Hospital between January 2020 and December 2020. All patients had stage IA primary lung cancer and were performed by the same surgical team. And computed tomography examinations were performed before and 1 y postoperatively. Based on computed tomography images, the volume of each lung lobe was measured using computer software and manual, the radiological lung weight was calculated. And multiple linear regressions were used to analyze the factors related to the increase in postoperative lung weight. RESULTS: One year after lobectomy, the radiological lung weight increased by an average of 112.4 ± 20.8%. Smoking history, number of resected lung segments, preoperative low attenuation volume, intraoperative arterial oxygen partial pressure/fraction of inspired oxygen ratio and postoperative visual analog scale scores at 48 h were significantly associated with postoperative radiological lung weight gain. CONCLUSIONS: Our results suggest that CLG have occurred after lobectomy in adults. In addition, anesthetists should maintain high arterial oxygen partial pressure/fraction of inspired oxygen ratio during one-lung ventilation and improve acute postoperative pain to benefit CLG.


Asunto(s)
Neoplasias Pulmonares , Pulmón , Neumonectomía , Tomografía Computarizada por Rayos X , Humanos , Neoplasias Pulmonares/cirugía , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/patología , Masculino , Estudios Retrospectivos , Persona de Mediana Edad , Femenino , Pulmón/diagnóstico por imagen , Pulmón/cirugía , Pulmón/crecimiento & desarrollo , Anciano , Adulto , Tamaño de los Órganos , Periodo Posoperatorio
17.
J Clin Invest ; 134(8)2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38618953

RESUMEN

N6-Methyladenosine (m6A), a prevalent posttranscriptional modification, plays an important role in cancer progression. Clear cell renal cell carcinoma (ccRCC) is chiefly associated with the loss of the von Hippel-Lindau (VHL) gene, encoding a component of the E3 ubiquitin ligase complex. In this issue of the JCI, Zhang and colleagues unveiled a function of VHL beyond its canonical role as an E3 ubiquitin ligase in regulating hypoxia-inducible factors (HIFs). It also governed m6A modification by orchestrating the assembly of m6A writer proteins METTL3 and METTL14, thereby stabilizing PIK3R3 mRNA. Mechanistically, PIK3R3 contributed to p85 ubiquitination, which restrained PI3K/AKT signaling and consequently impeded ccRCC growth in cell and mouse models. This discovery provides potential treatment targets in VHL-deficient ccRCCs.


Asunto(s)
Adenina , Carcinoma de Células Renales , Neoplasias Renales , Animales , Ratones , Carcinoma de Células Renales/genética , Neoplasias Renales/genética , Fosfatidilinositol 3-Quinasas/genética , Estabilidad del ARN , Ubiquitina-Proteína Ligasas , Humanos
18.
Mol Biomed ; 5(1): 15, 2024 04 29.
Artículo en Inglés | MEDLINE | ID: mdl-38679629

RESUMEN

Tuberculosis (TB) is an infectious disease that significantly threatens human health. However, the differential diagnosis of latent tuberculosis infection (LTBI) and active tuberculosis (ATB) remains a challenge for clinicians in early detection and preventive intervention. In this study, we developed a novel biomarker named HP16118P, utilizing 16 helper T lymphocyte (HTL) epitopes, 11 cytotoxic T lymphocyte (CTL) epitopes, and 8 B cell epitopes identified from 15 antigens associated with LTBI-RD using the IEDB database. We analyzed the physicochemical properties, spatial structure, and immunological characteristics of HP16118P using various tools, which indicated that it is a hydrophilic and relatively stable alkaline protein. Furthermore, HP16118P exhibited good antigenicity and immunogenicity, while being non-toxic and non-allergenic, with the potential to induce immune responses. We observed that HP16118P can stimulate the production of high levels of IFN-γ+ T lymphocytes in individuals with ATB, LTBI, and health controls. IL-5 induced by HP16118P demonstrated potential in distinguishing LTBI individuals and ATB patients (p=0.0372, AUC=0.8214, 95% CI [0.5843 to 1.000]) with a sensitivity of 100% and specificity of 71.43%. Furthermore, we incorporated the GM-CSF, IL-23, IL-5, and MCP-3 induced by HP16118P into 15 machine learning algorithms to construct a model. It was found that the Quadratic discriminant analysis model exhibited the best diagnostic performance for discriminating between LTBI and ATB, with a sensitivity of 1.00, specificity of 0.86, and accuracy of 0.93. In summary, HP16118P has demonstrated strong antigenicity and immunogenicity, with the induction of GM-CSF, IL-23, IL-5, and MCP-3, suggesting their potential for the differential diagnosis of LTBI and ATB.


Asunto(s)
Biomarcadores , Tuberculosis Latente , Mycobacterium tuberculosis , Humanos , Antígenos Bacterianos/inmunología , Proteínas Bacterianas/inmunología , Biomarcadores/sangre , Diagnóstico Diferencial , Epítopos de Linfocito B/inmunología , Epítopos de Linfocito T/inmunología , Tuberculosis Latente/diagnóstico , Tuberculosis Latente/inmunología , Mycobacterium tuberculosis/inmunología
19.
Cancer Cell ; 42(4): 513-534, 2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38593779

RESUMEN

In cancer treatment, the recurrent challenge of inducing apoptosis through conventional therapeutic modalities, often thwarted by therapy resistance, emphasizes the critical need to explore alternative cell death pathways. Ferroptosis, an iron-dependent form of regulated cell death triggered by the lethal accumulation of lipid peroxides on cellular membranes, has emerged as one such promising frontier in oncology. Induction of ferroptosis not only suppresses tumor growth but also holds potential for augmenting immunotherapy responses and surmounting resistance to existing cancer therapies. This review navigates the role of ferroptosis in tumor suppression. Furthermore, we delve into the complex role of ferroptosis within the tumor microenvironment and its interplay with antitumor immunity, offering insights into the prospect of targeting ferroptosis as a strategic approach in cancer therapy.


Asunto(s)
Ferroptosis , Neoplasias , Humanos , Microambiente Tumoral , Neoplasias/terapia , Inmunoterapia , Oncología Médica
20.
Int J Surg ; 110(6): 3543-3553, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38489552

RESUMEN

BACKGROUND: Split liver transplantation (SLT) increases graft availability, but it's safe and effective utilization is insufficiently documented. This study aimed to investigate the association between perioperative body composition abnormalities and outcomes in adult SLT. MATERIALS AND METHODS: Two hundred forty recipients who underwent SLT in three centers were enrolled in this retrospective cohort study. Body composition abnormalities including sarcopenia, myosteatosis, visceral obesity, and sarcopenic obesity were evaluated at baseline and 1 month after surgery using computed tomography. Their impact on outcomes including early allograft dysfunction, early complications, ICU stay, graft regeneration rate, and survival was analyzed. RESULTS: Recipients with sarcopenia or myosteatosis had a higher risk of early allograft dysfunction, higher early complication rate, and longer length of ICU stay (all P <0.05), while there was no difference in graft regeneration rate. Recipient and graft survival were significantly worse for recipients with body composition abnormalities (all P <0.05). In multivariable Cox-regression analysis, sarcopenia [hazard ratio (HR)=1.765, P =0.015], myosteatosis (HR=2.066, P =0.002), and visceral obesity (HR=1.863, P =0.008) were independently associated with shorter overall survival. Piling up of the three factors increased the mortality risk stepwise ( P <0.001). Recipients experienced skeletal muscle loss and muscle fat infiltration 1 month after surgery. Postoperative worsening sarcopenia (HR=2.359, P =0.009) and myosteatosis (HR=1.878, P =0.026) were also identified as independent risk factors for mortality. CONCLUSION: Sarcopenia, myosteatosis, and their progression negatively affect outcomes including early allograft dysfunction, early complications, ICU stay and survival after SLT. Systemic evaluation and dynamic monitoring of body composition are valuable.


Asunto(s)
Composición Corporal , Trasplante de Hígado , Complicaciones Posoperatorias , Sarcopenia , Humanos , Estudios Retrospectivos , Masculino , Femenino , Trasplante de Hígado/efectos adversos , Persona de Mediana Edad , Adulto , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/epidemiología , Supervivencia de Injerto , Resultado del Tratamiento , Factores de Riesgo
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