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1.
Small ; : e2407425, 2024 Sep 30.
Article de Anglais | MEDLINE | ID: mdl-39350438

RÉSUMÉ

The characteristics of solid electrolyte interphase (SEI) at both the cathode and anode interfaces are crucial for the performance of sodium-ion batteries (SIBs). The research demonstrates the merits of a balanced organic component, specifically the organic sodium alkyl sulfonate (ROSO2Na) featured in this work, in conjunction with the inorganic sodium fluoride (NaF), to enhance the interfacial stability. Using a customized electrolyte, it has optimized the interphase, curbing excess NaF production, and created a thin and uniform NaF/ROSO2Na-rich SEI layer. It offers exceptional protection against interface deterioration, transition metal dissolution, and concurrently ensures a consistent reduction in interfacial impedance. This creative approach results in a substantial improvement in the performance of both the Na0.9Ni0.4Fe0.2Mn0.4O2 cathode and the hard carbon anode. The cathode demonstrates remarkable average Coulombic efficiency exceeding 99.9% and a capacity retention of 81% after 500 cycles. Furthermore, the Ah-level pouch cell has shown outstanding performance with an 87% capacity retention after 400 cycles. Moving beyond the prevailing focus on inorganic-rich SEI, these results highlight the effectiveness of the customized organic-inorganic hybrid SEI formulation in improving SIB technology, offering an adaptable solution that ensures superior interfacial stability.

2.
J Pediatr ; : 114329, 2024 Sep 30.
Article de Anglais | MEDLINE | ID: mdl-39357818

RÉSUMÉ

OBJECTIVE: To evaluate outcomes of children from an observational cohort registry of index acute pancreatitis (AP) admissions managed with different types and rates of intravenous fluid therapy. Study design Patients with index admission of AP between 2013 and 2023 were included. Those who received > 1.5x the maintenance intravenous (IV) fluid rate were assigned to the liberal fluid group, and patients who received < 1.5x maintenance fluids were assigned to the conservative group. Outcomes including ICU admission rate, organ dysfunction, local pancreatic complications, and AP severity were evaluated. Influence of early enteral feeding and fluid composition on outcomes and clinical course were also analyzed. RESULTS: Patients who received liberal fluids were less likely to be admitted or transferred to the intensive care unit compared with those receiving conservative management (OR, 0.32; 95% CI, 0.12-0.80; P = 0.015). The liberal fluid group with early feeding had the lowest rate of moderate/severe manifestations of AP compared with other combinations of diet and fluid orders. Patients within the liberal fluid group who received the highest fluid rates (>2x maintenance) did not have higher rates of organ dysfunction or severe disease. CONCLUSION: Children with AP may stand to benefit from liberal fluid therapy and continued diet compared with more conservative fluid resuscitation and nothing by mouth status.

3.
Metabolism ; 161: 156043, 2024 Sep 30.
Article de Anglais | MEDLINE | ID: mdl-39357599

RÉSUMÉ

AIMS: To compare the efficacy of thyroid hormone receptor beta (THR-ß) agonists, fibroblast growth factor 21 (FGF-21) analogues, glucagon-like peptide-1 receptor agonists (GLP-1RAs), GLP-1-based polyagonists, and pan-peroxisome proliferator-activated receptor (Pan-PPAR) agonists in the treatment of metabolic dysfunction-associated steatotic liver disease (MASLD). METHODS: A database search for relevant randomized double-blind controlled trials published until July 11, 2024, was conducted. Primary outcomes were the relative change in hepatic fat fraction (HFF) and liver stiffness assessed non-invasively by magnetic resonance imaging proton density fat fraction and elastography. Secondary outcomes included histology, liver injury index, lipid profile, glucose metabolism, blood pressure, and body weight. RESULTS: Twenty-seven trials (5357 patients with MASLD) were identified. For HFF reduction, GLP-1-based polyagonists were most potentially effective (mean difference [MD] -51.47; 95 % confidence interval [CI]: -68.25 to -34.68; surface under the cumulative ranking curve [SUCRA] 84.9) vs. placebo, followed by FGF-21 analogues (MD -47.08; 95 % CI: -58.83 to -35.34; SUCRA 75.5), GLP-1R agonists (MD -37.36; 95 % CI: -69.52 to -5.21; SUCRA 52.3) and THR-ß agonists (MD -33.20; 95 % CI: -43.90 to -22.51; SUCRA 36.9). For liver stiffness, FGF-21 analogues were most potentially effective (MD -9.65; 95 % CI: -19.28 to -0.01; SUCRA 82.2) vs. placebo, followed by THR-ß agonists (MD -5.79; 95 % CI: -9.50 to -2.09; SUCRA 58.2), and GLP-1RAs (MD -5.58; 95 % CI: -15.02 to 3.86; SUCRA 54.7). For fibrosis improvement in histology, GLP-1-based polyagonists were most potentially effective, followed by FGF-21 analogues, THR-ß agonists, Pan-PPAR agonists, and GLP-1R agonists; For MASH resolution in histology, GLP-1-based polyagonists were most potentially effective, followed by THR-ß agonists, GLP-1R agonists, FGF-21 analogues, and Pan-PPAR agonists. THR-ß agonists are well-balanced in liver steatosis and fibrosis, and excel at improving lipid profiles; FGF-21 analogues are effective at improving steatosis and particularly exhibit strong antifibrotic abilities. GLP-1R agonists showed significant benefits in improving liver steatosis, glucose metabolism, and body weight. GLP-1-based polyagonists have demonstrated the most potential efficacy overall in terms of comprehensive curative effect. Pan-PPAR agonists showed distinct advantages in improving liver function and glucose metabolism. CONCLUSION: These results illustrate the relative superiority of the five classes of therapy in the treatment of MASLD and may serve as guidance for the development of combination therapies.

4.
Commun Biol ; 7(1): 1079, 2024 Sep 03.
Article de Anglais | MEDLINE | ID: mdl-39227641

RÉSUMÉ

Bacteria constitute a significant part of the biomass of the human microbiota, but their interactions are complex and difficult to replicate outside the host. Exploiting the superior resolution of magnetic resonance imaging (MRI) to examine signal parameters of selected human isolates may allow tracking of their dispersion throughout the body. Here we investigate longitudinal and transverse MRI relaxation rates and found significant differences between several bacterial strains. Common commensal strains of lactobacilli display notably high MRI relaxation rates, partially explained by elevated cellular manganese content, while other species contain more iron than manganese. Lactobacillus crispatus show particularly high values, 4-fold greater than any other species; up to 60-fold greater signal than relevant tissue background; and a linear relationship between relaxation rate and fraction of live cells. Different bacterial strains have detectable, repeatable MRI relaxation rates that in the future may enable monitoring of their persistence in the human body for enhanced molecular imaging.


Sujet(s)
Imagerie par résonance magnétique , Microbiote , Humains , Imagerie par résonance magnétique/méthodes , Femelle , Bactéries/métabolisme , Bactéries/isolement et purification , Métaux/métabolisme , Appareil urogénital/microbiologie , Manganèse/métabolisme , Manganèse/analyse
5.
Article de Anglais | MEDLINE | ID: mdl-39233016

RÉSUMÉ

BACKGROUND: A 6-food elimination diet in pediatric eosinophilic esophagitis (EoE) is difficult to implement and may negatively affect quality of life (QoL). Less restrictive elimination diets may balance QoL and efficacy. OBJECTIVE: We performed a multisite, randomized comparative efficacy trial of a 1-food (milk) elimination diet (1FED) versus 4-food (milk, egg, wheat, soy) elimination diet (4FED) in pediatric EoE. METHODS: Patients aged 6 to 17 years with histologically active and symptomatic EoE were randomized 1:1 to 1FED or 4FED for 12 weeks. Primary end point was symptom improvement by Pediatric Eosinophilic Esophagitis Symptom Score (PEESS). Secondary end points were proportion experiencing histologic remission (<15 eosinophils per high-power field); change in histologic features (histology scoring system), endoscopic severity (endoscopic reference score), transcriptome (EoE diagnostic panel), and QoL scores; and predictors of remission. RESULTS: Sixty-three patients were randomly assigned to 1FED (n = 38) and 4FED (n = 25). In 4FED versus 1FED, mean PEESS improved -25.0 versus -14.5 (P = .04), but remission rates (41% vs 44%; P = 1.00), histology scoring system (-0.25 vs -0.29; P = .77), endoscopic reference score (-1.10 vs -0.58; P = .47), and QoL scores were similar between groups. The EoE transcriptome normalized in those with histologic response to both diets. Baseline peak eosinophil count predicted remission (odds ratio, 0.975 [95% confidence interval, 0.953-0.999], P = .04; cutoff ≤42 eosinophils per high-power field). The 4FED withdrawal rate (32%) exceeded that of 1FED (11%) (P = .0496). CONCLUSIONS: Although 4FED moderately improved symptoms compared with 1FED, the histologic, endoscopic, QoL, and transcriptomic outcomes were similar in both groups. 1FED is a reasonable first-choice therapy for pediatric EoE, given its effects, tolerability, and relative simplicity.

6.
J Pediatr ; 276: 114301, 2024 Sep 13.
Article de Anglais | MEDLINE | ID: mdl-39278535

RÉSUMÉ

OBJECTIVE: To investigate the relationship between longitudinal changes in body composition and liver disease severity in children with metabolic dysfunction-associated steatotic liver disease (MASLD). STUDY DESIGN: This longitudinal, single-center, retrospective analysis included patients aged <20 years followed for MASLD who had had ≥2 bioelectrical impedance analyses (BIAs) performed. MASLD regression was defined as alanine aminotransferase (ALT) normalization or a decrease of >50% from baseline. Fat and skeletal muscle mass were adjusted for size by calculating respective indices (dividing by height2). Logistic and linear regressions were used to determine the independent relationship between changes in body composition over time and serological markers of liver disease severity. RESULTS: We included 258 patients (75% male, 50% Hispanic) with a median age of 14 years (IQR, 11-16 years) at the time of first BIA. Median body mass index (BMI) z-score at baseline was 2.33 (IQR, 2.04-2.62). Median time from first to last BIA was 12 months (IQR, 6-24 months). A decrease in fat mass index was independently associated with reductions in ALT and gamma glutamyl transferase and increased odds of MASLD regression (OR; 0.55; P < .001). Fat mass index reduction was superior to BMI z-score in predicting MASLD regression. Change in skeletal muscle mass index was not associated with change in ALT or gamma glutamyl transferase. CONCLUSIONS: Changes in fat mass, not skeletal muscle mass, are associated with serological markers of liver injury in youth with MASLD. Fat mass changes outperform BMI z-score changes in predicting MASLD regression. BIA can serve as an adjunct biomarker of liver disease progression.

8.
J Pediatr Gastroenterol Nutr ; 79(3): 622-630, 2024 Sep.
Article de Anglais | MEDLINE | ID: mdl-39113476

RÉSUMÉ

OBJECTIVES: Identify clinical and serologic features that more accurately predict a diagnosis of celiac disease (CD) in children with type 1 diabetes mellitus (T1DM), particularly focusing on the degree of elevation of tissue transglutaminase immunoglobulin A (TTG IgA) and dilution of positive endomysial antibody (EMA). METHODS: We performed a single-center retrospective review of patients with T1DM who underwent endoscopy from 2016 to 2022 for evaluation of CD. We compared demographic, anthropometric, and laboratory data as well as symptoms and endoscopy findings for subjects with and without CD. RESULTS: Of 123 subjects who underwent esophagogastroduodenoscopy, 74 (60%) were diagnosed with CD. Univariate logistic regression analysis revealed the factors associated with CD were degree of TTG IgA elevation, EMA positivity, and degree of EMA dilution. For every 10-fold increase in TTG IgA, there was a 4.7× increased risk of CD. TTG IgA ≥10 times the upper limit of normal (ULN) provided a positive predictive value (PPV) of 85% (confidence interval [CI]: [0.76-92]) in all subjects and 91% in asymptomatic subjects (CI: [0.75-0.98]). Of 66 subjects with EMA data, 41 (62%) were positive and 32 had CD (PPV = 0.78). Of 12 asymptomatic subjects with positive EMA, eight had CD (PPV = 0.67). For subjects with EMA ≥ 1:80, all were diagnosed with CD, and all had TTG IgA ≥10 times the ULN. CONCLUSIONS: Among patients with T1DM, symptoms, adjunct labs, and anthropometrics do not help predict CD, but the degree of elevation of TTG IgA and dilution of a positive EMA result do.


Sujet(s)
Maladie coeliaque , Diabète de type 1 , Immunoglobuline A , Valeur prédictive des tests , Transglutaminases , Humains , Maladie coeliaque/sang , Maladie coeliaque/diagnostic , Maladie coeliaque/complications , Maladie coeliaque/immunologie , Femelle , Diabète de type 1/complications , Diabète de type 1/sang , Diabète de type 1/immunologie , Mâle , Études rétrospectives , Immunoglobuline A/sang , Enfant , Transglutaminases/immunologie , Adolescent , Protein glutamine gamma glutamyltransferase-2 , Enfant d'âge préscolaire , Protéines G/immunologie , Autoanticorps/sang , Marqueurs biologiques/sang , Endoscopie digestive
9.
J Pediatr Gastroenterol Nutr ; 79(4): 895-904, 2024 Oct.
Article de Anglais | MEDLINE | ID: mdl-39149789

RÉSUMÉ

OBJECTIVES: The prevalence of celiac disease (CeD) is increasing, yet it is still underdiagnosed, in part because of its heterogeneous presentation. Diagnostic criteria are evolving and management with strict adherence to a gluten-free diet is challenging for many. We aimed to characterize the clinical presentation of CeD among a large multicenter cohort of pediatric patients and to identify factors associated with gluten-free diet adherence. METHODS: Patients with CeD aged 0-18 years were recruited from 11 United States health centers. Parents completed surveys about gluten-free diet adherence and patient electronic health records were reviewed. Logistic regression analyses were performed to identify risk factors associated with gluten exposure. RESULTS: Charts were reviewed for 460 children with a median age of 6.4 years. Abdominal pain was reported in 57% of the cohort, but diverse symptoms were identified. Parent surveys were completed for 455 participants. Sixty-five (14%) participants were at high risk for gluten exposure based on parental reports of weekly or daily gluten exposure or eating gluten by choice in the past year. Participants under the age of 5 years had a lower risk of gluten exposure, while participants without repeat serology testing 18 months after initial diagnosis were at higher risk of gluten exposure. CONCLUSIONS: In a large, multicenter cohort of pediatric CeD patients, clinical presentation is highly variable, necessitating a high index of suspicion to make a diagnosis. Parent surveys indicate that 14% of patients are at high risk of gluten exposure, with patient age and lack of close follow-up associated with gluten-free diet adherence.


Sujet(s)
Maladie coeliaque , Régime sans gluten , Glutens , Humains , Maladie coeliaque/diétothérapie , Maladie coeliaque/diagnostic , Enfant , Mâle , Femelle , Enfant d'âge préscolaire , Adolescent , Nourrisson , Glutens/effets indésirables , Glutens/administration et posologie , Facteurs de risque , États-Unis/épidémiologie , Observance par le patient/statistiques et données numériques , Nouveau-né , Études rétrospectives , Prévalence
10.
BMC Pregnancy Childbirth ; 24(1): 545, 2024 Aug 16.
Article de Anglais | MEDLINE | ID: mdl-39152379

RÉSUMÉ

BACKGROUND: Non-invasive chromosome screening (NICS) and trophectoderm biopsy preimplantation genetic testing for aneuploidy (TE-PGT) were both applied for embryo ploidy detection, However, the cumulative live birth rates (CLBR) of NICS and TE-PGT in older age groups have yet to be reported. This study aimed to ascertain whether NICS and TE-PGT could enhance the cumulative live birth rates among patients of advanced maternal age. METHODS: A total of 384 couples aged 35-40 years were recruited. The patients were assigned to three groups: NICS, TE-PGT, and intracytoplasmic sperm injection (ICSI). All patients received frozen single blastocyst transfer. Patients in the NICS and TE-PGT groups underwent aneuploidy screening. RESULTS: When compared to the ICSI group, the CLBR was significantly higher in the NICS and TE-PGT groups (27.9% vs. 44.9% vs. 51.0%, p = 0.003 for NICS vs. ICSI, p < 0.001 for TE-PGT vs. ICSI). There were no significant differences in the clinical outcomes between the NICS and TE-PGT groups. Adjusting for confounding factors, the NICS and TE-PGT groups still showed a higher CLBR than the ICSI group (adjusted odds ratio (OR) 3.847, 95% confidence interval (CI) 1.939 to 7.634; adjusted OR 3.795, 95% CI 1.981 to 7.270). Additionally, the cumulative pregnancy loss rates of the NICS and TE-PGT groups were significantly lower than that of the ICSI group (adjusted OR 0.277, 95% CI 0.087 to 0.885; adjusted OR 0.182, 95% CI 0.048 to 0.693). There was no significant difference in the birth weights of the three groups (p = 0.108). CONCLUSIONS: In women 35-40 years old, the CLBR can be increased by selecting euploid embryos using NICS and TE-PGT. For elderly women at high risk of embryonic aneuploidy, NICS, characterized by its safety and non-invasive nature, may emerge as an alternative option for preimplantation genetic testing.


Sujet(s)
Aneuploïdie , Dépistage génétique , Âge maternel , Diagnostic préimplantatoire , Injections intracytoplasmiques de spermatozoïdes , Humains , Femelle , Diagnostic préimplantatoire/méthodes , Adulte , Grossesse , Études prospectives , Dépistage génétique/méthodes , Naissance vivante , Taux de natalité , Taux de grossesse , Mâle , Transfert d'embryon/méthodes
11.
Technol Cancer Res Treat ; 23: 15330338241272036, 2024.
Article de Anglais | MEDLINE | ID: mdl-39169865

RÉSUMÉ

BACKGROUND: Gastric intestinal metaplasia(GIM) is an independent risk factor for GC, however, its pathogenesis is still unclear. Ferroptosis is a new type of programmed cell death, which may be involved in the process of GIM. The purpose of this study was to analyze the expression of ferroptosis-related genes (FRGs) in GIM tissues and to explore the relationship between ferroptosis and GIM. METHOD: The results of GIM tissue full transcriptome sequencing were downloaded from Gene Expression Omnibus(GEO) database. R software (V4.2.0) and R packages were used for screening and enrichment analysis of differentially expressed genes(DEGs). The key genes were screened by least absolute shrinkage and selection operator(LASSO) and support vector machine-recursive feature elimination(SVM-RFE) algorithm. Receiver operating characteristic(ROC) curve was used to evaluate the diagnostic efficacy of key genes in GIM. Clinical samples were used to further validate hub genes. RESULTS: A total of 12 differentially expressed ferroptosis-related genes (DEFRGs) were identified. Using two machine learning algorithms, GOT1, ALDH3A2, ACSF2 and SESN2 were identified as key genes. The area under ROC curve (AUC) of GOT1, ALDH3A2, ACSF2 and SESN2 in the training set were 0.906, 0.955, 0.899 and 0.962 respectively, and the AUC in the verification set were 0.776, 0.676, 0.773 and 0.880, respectively. Clinical samples verified the differential expression of GOT1, ACSF2, and SESN2 in GIM. CONCLUSION: We found that there was a significant correlation between ferroptosis and GIM. GOT1, ACSF2 and SESN2 can be used as diagnostic markers to effectively identify GIM.


Sujet(s)
Ferroptose , Apprentissage machine , Métaplasie , Ferroptose/génétique , Humains , Métaplasie/génétique , Métaplasie/anatomopathologie , Métaplasie/diagnostic , Analyse de profil d'expression de gènes , Tumeurs de l'estomac/génétique , Tumeurs de l'estomac/anatomopathologie , Tumeurs de l'estomac/diagnostic , Marqueurs biologiques tumoraux/génétique , Courbe ROC , Transcriptome , Biologie informatique/méthodes , Machine à vecteur de support , Régulation de l'expression des gènes tumoraux , Cartes d'interactions protéiques
12.
Intensive Care Med ; 50(8): 1298-1309, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-39088076

RÉSUMÉ

PURPOSE: Awake prone positioning has been reported to reduce endotracheal intubation in patients with coronavirus disease 2019 (COVID-19)-related acute hypoxemic respiratory failure (AHRF). However, it is still unclear whether using the awake prone positioning for longer periods can further improve outcomes. METHODS: In this randomized, open-label clinical trial conducted at 12 hospitals in China, non-intubated patients with COVID-19-related AHRF were randomly assigned to prolonged awake prone positioning (target > 12 h daily for 7 days) or standard care with a shorter period of awake prone positioning. The primary outcome was endotracheal intubation within 28 days after randomization. The key secondary outcomes included mortality and adverse events. RESULTS: In total, 409 patients were enrolled and randomly assigned to prolonged awake prone positioning (n = 205) or standard care (n = 204). In the first 7 days after randomization, the median duration of prone positioning was 12 h/d (interquartile range [IQR] 12-14 h/d) in the prolonged awake prone positioning group vs. 5 h/d (IQR 2-8 h/d) in the standard care group. In the intention-to-treat analysis, intubation occurred in 35 (17%) patients assigned to prolonged awake prone positioning and in 56 (27%) patients assigned to standard care (relative risk 0.62 [95% confidence interval (CI) 0.42-0.9]). The hazard ratio (HR) for intubation was 0.56 (0.37-0.86), and for mortality was 0.63 (0.42-0.96) for prolonged awake prone positioning versus standard care, within 28 days. The incidence of pre-specified adverse events was low and similar in both groups. CONCLUSION: Prolonged awake prone positioning of patients with COVID-19-related AHRF reduces the intubation rate without significant harm. These results support prolonged awake prone positioning of patients with COVID-19-related AHRF.


Sujet(s)
COVID-19 , Intubation trachéale , Positionnement du patient , Insuffisance respiratoire , Humains , COVID-19/complications , COVID-19/thérapie , Décubitus ventral , Mâle , Femelle , Adulte d'âge moyen , Positionnement du patient/méthodes , Intubation trachéale/méthodes , Intubation trachéale/statistiques et données numériques , Sujet âgé , Insuffisance respiratoire/thérapie , Insuffisance respiratoire/étiologie , Vigilance , Chine/épidémiologie , Facteurs temps , SARS-CoV-2
13.
Cell Signal ; 123: 111355, 2024 Nov.
Article de Anglais | MEDLINE | ID: mdl-39173854

RÉSUMÉ

Liver fibrosis is a chronic pathological process in which the abnormal proliferation of connective tissue is induced by various pathogenic factors. During the process of fibrosis, excessive angiogenesis is observed. Physiological angiogenesis has the potential to impede the progression of liver fibrosis through augmenting matrix metalloenzyme activity; however, pathological angiogenesis can exacerbate liver fibrosis by promoting collagen accumulation. Therefore, a key scientific research focus in the treatment of liver diseases is to search for the "on-off" mechanism that regulates angiogenesis from normal proliferation to pathological proliferation. In this study, we found that excessive angiogenesis appeared during the initial phase of hepatic fibrosis without mesenchymal characteristics. In addition, angiogenesis accompanied by significant endothelial-to-mesenchymal transition (EndMT) was observed in mice after the intraperitoneal injection of angiotensin II (Ang II). Interestingly, the changes in Yes-associated protein (YAP) activity in endothelial cells (ECs) can affect the regulation of angiogenesis by Ang II. The results of in vitro experiments revealed that the regulatory influence of Ang II on ECs was significantly attenuated upon suppression of YAP activity. Furthermore, the function of Ang II in regulating angiogenesis during fibrosis was investigated in liver-specific transgenic mice. The results revealed that Ang II gene deletion could restrain liver fibrosis and EndMT. Meanwhile, Ang II deletion downregulated the profibrotic YAP signaling pathway in ECs. The small molecule AT1R agonist olmesartan targeting Ang II-YAP signaling could also alleviate liver fibrosis. In conclusion, this study identified Ang II as a pivotal regulator of EndMT during the progression of liver fibrosis and evaluated the therapeutic effect of the Ang II-targeted drug olmesartan on liver fibrosis.


Sujet(s)
Protéines adaptatrices de la transduction du signal , Angiotensine-II , Cirrhose du foie , Néovascularisation pathologique , Protein-Serine-Threonine Kinases , Transduction du signal , Protéines de signalisation YAP , Animaux , Angiotensine-II/pharmacologie , Cirrhose du foie/métabolisme , Cirrhose du foie/anatomopathologie , Protéines de signalisation YAP/métabolisme , Transduction du signal/effets des médicaments et des substances chimiques , Protéines adaptatrices de la transduction du signal/métabolisme , Souris , Protein-Serine-Threonine Kinases/métabolisme , Néovascularisation pathologique/métabolisme , Humains , Voie de signalisation Hippo , Souris de lignée C57BL , Facteurs de transcription/métabolisme , Cellules endothéliales de la veine ombilicale humaine/métabolisme , Mâle , Souris transgéniques , Protéines du cycle cellulaire/métabolisme , Imidazoles/pharmacologie , Cellules endothéliales/métabolisme , Cellules endothéliales/effets des médicaments et des substances chimiques , Tétrazoles/pharmacologie , Angiogenesis
14.
Environ Pollut ; 360: 124623, 2024 Nov 01.
Article de Anglais | MEDLINE | ID: mdl-39069244

RÉSUMÉ

Hydrogel adsorbents are promising tools for reducing heavy metals' bioavailability in contaminated soil. However, their practical feasibility remains limited by the low stability, inefficient removal efficiency, and potential secondary pollution. Optimizing the adsorption operation and the functional properties of hydrogel adsorbents could eliminate this method's drawbacks. Herein, three innovative in-situ remediation strategies for Pb/Cu-contaminated soil were adopted based on the concept of novel TEMPO-cellulose (TO-NFCs)/lignin/acrylamide@MIL-100(Fe) nanocomposite hydrogel adsorbent (NCLMH). Characteristic analyses revealed ideal Pb/Cu adsorption mechanisms by swelling, complexation, electrical attraction, and ion exchange via carboxyl/hydroxyl/carbonyl groups and unsaturated Fe(III) sites on ANCMH besides FeOOH formation. The highest maximum theoretical adsorption capacities of Pb(II) and Cu(II) on ANCMH were 416.39 and 133.98 mg/g, under pH 6.5, governed by pseudo-second-order/Freundlich models. Greenhouse pot experiments with contaminated soils amended with two-depth layers of 0.5% NCLMHs (SA@NCLMH) displayed a decline in Pb and Cu bioavailability up to 85.9% and 74.5% within 45 d. Soil column studies simulating continuous water soil flushing coupled with NCLMH layers, instead of conventional extractant fluids, and connected to NCLMH-sand column as purification unit (CF@NCLMH) achieved higher removal rates for Pb, and Cu of 89.5% and 77.2% within 24 h. Alternatively, conducting multiple-pulse soil flushing mode (MF@NCLMH) gained the highest Pb and Cu removal of 96.5% and 85.4%, as the water flushing-stop flux events allowed adequate water movement/residence period, promoting Pb/Cu desorption-adsorption from soil to NCLMH. Also, the NCLMH-sand column conducting and easy separation of the stable/reusable NCLMHs prevented the potential secondary pollution. Interestingly, the three remediated soils reached the corresponding regulation of the permissible limits for Pb and Cu residential scenarios in medium-to-heavily agricultural polluted soils, alleviating the Pb/Cu bioaccumulation and phytotoxicity symptoms in cultivated wheat, especially after MF@NCLMH treatment. This study introduces promising alternative remediation strategies with high sustainability and feasibility in acidic-to-neutral heavy metal-contaminated agricultural soil.


Sujet(s)
Cellulose , Cuivre , Assainissement et restauration de l'environnement , Hydrogels , Plomb , Lignine , Nanocomposites , Polluants du sol , Sol , Adsorption , Assainissement et restauration de l'environnement/méthodes , Assainissement et restauration de l'environnement/instrumentation , Polluants du sol/composition chimique , Nanocomposites/composition chimique , Plomb/composition chimique , Cuivre/composition chimique , Cellulose/composition chimique , Hydrogels/composition chimique , Lignine/composition chimique , Sol/composition chimique , Agriculture , Réseaux organométalliques/composition chimique
15.
BMC Public Health ; 24(1): 1897, 2024 Jul 16.
Article de Anglais | MEDLINE | ID: mdl-39014372

RÉSUMÉ

OBJECTIVES: The geographical environment and military activities in the plateau area pose potential work-related stressors for military personnel, leading to burnout which is an external manifestation of internal energy exhaustion caused by stress. Without countermeasures, this can result in serious military problems. This study aims to examine the association between burnout and occupational stressors among military personnel stationed in the plateau area of China. MATERIAL AND METHODS: A stratified randomized cluster sampling survey was conducted among 2026 military personnel from 6 different troops stationed in the plateau area of China. The Chinese Maslach Burnout Inventory-General Survey(MBI-GS in Chinese) was administered from March 2022 to December 2023, and data were analyzed using SPSS version 25. RESULTS: A total of 2026 military personnel participated in the survey. The mean overall burnout score was 3.37 ± 0.73, with emotional exhaustion at 2.69 ± 0.89, depersonalization at 3.58 ± 0.92, and professional achievement at 3.81 ± 0.85 levels respectively reported by participants on average scale scores ranging from zero to six. Severe level of burnout was reported by 43.2% of participants while medium level of burnout was reported by 54 .3%. Age, education level, length of military service, and household income were identified as important factors influencing burnout. CONCLUSION: This study highlights a relatively high prevalence of burnout among military personnel stationed in plateau areas necessitating attention towards their occupational health particularly focusing on working hours and economic aspects so as to formulate effective policies and implement intervention measures that strengthen career development for soldiers deployed in such regions.


Sujet(s)
Épuisement professionnel , Personnel militaire , Humains , Chine/épidémiologie , Personnel militaire/psychologie , Personnel militaire/statistiques et données numériques , Études transversales , Mâle , Adulte , Prévalence , Épuisement professionnel/épidémiologie , Épuisement professionnel/psychologie , Femelle , Jeune adulte , Adulte d'âge moyen , Enquêtes et questionnaires
16.
Front Immunol ; 15: 1424197, 2024.
Article de Anglais | MEDLINE | ID: mdl-38983866

RÉSUMÉ

Background: Lung squamous cell carcinoma (LUSC) ranks among the carcinomas with the highest incidence and dismal survival rates, suffering from a lack of effective therapeutic strategies. Consequently, biomarkers facilitating early diagnosis of LUSC could significantly enhance patient survival. This study aims to identify novel biomarkers for LUSC. Methods: Utilizing the TCGA, GTEx, and CGGA databases, we focused on the gene encoding Family with Sequence Similarity 20, Member A (FAM20A) across various cancers. We then corroborated these bioinformatic predictions with clinical samples. A range of analytical tools, including Kaplan-Meier, MethSurv database, Wilcoxon rank-sum, Kruskal-Wallis tests, Gene Set Enrichment Analysis, and TIMER database, were employed to assess the diagnostic and prognostic value of FAM20A in LUSC. These tools also helped evaluate immune cell infiltration, immune checkpoint genes, DNA repair-related genes, DNA methylation, and tumor-related pathways. Results: FAM20A expression was found to be significantly reduced in LUSC, correlating with lower survival rates. It exhibited a negative correlation with key proteins in DNA repair signaling pathways, potentially contributing to LUSC's radiotherapy resistance. Additionally, FAM20A showed a positive correlation with immune checkpoints like CTLA-4, indicating potential heightened sensitivity to immunotherapies targeting these checkpoints. Conclusion: FAM20A emerges as a promising diagnostic and prognostic biomarker for LUSC, offering potential clinical applications.


Sujet(s)
Marqueurs biologiques tumoraux , Carcinome épidermoïde , Tumeurs du poumon , Humains , Marqueurs biologiques tumoraux/génétique , Tumeurs du poumon/diagnostic , Tumeurs du poumon/génétique , Tumeurs du poumon/mortalité , Tumeurs du poumon/immunologie , Carcinome épidermoïde/diagnostic , Carcinome épidermoïde/génétique , Carcinome épidermoïde/immunologie , Pronostic , Régulation de l'expression des gènes tumoraux , Biologie informatique/méthodes , Bases de données génétiques , Protéines contenant un bromodomaine , Protéines de tissu nerveux , Facteurs de transcription , Antigènes nucléaires
17.
PLoS One ; 19(7): e0306518, 2024.
Article de Anglais | MEDLINE | ID: mdl-38980862

RÉSUMÉ

OBJECTIVE: To evaluate the effects of Tai Chi in the treatment of patients with chronic low back pain by Meta-analysis and to investigate its influencing factors. METHODS: The study searched eight databases (PubMed, Embase, The Cochrane Library, Web of Science, China Knowledge Network, Wanfang, VIP, and CBM) from inception to October 2023. Two investigators independently selected 10 eligible randomized controlled trials (RCT) against inclusion and exclusion criteria, followed by data extraction and study quality assessment by ROB 2. The outcomes of interest were pain intensity and disability. The studies were combined using meta-analysis when statistical pooling of data was possible. The quality of the evidence was assessed using the GRADE approach. RESULTS: 10 randomized controlled studies with a total sample of 886 cases were included, of which 4 (40%) were assessed as low risk of bias. The effect size of Tai Chi for chronic low back pain was [Weighted Mean Difference (WMD) with 95% Confidence Interval (CI) = -1.09 (-1.26, -0.92), p < 0.01], all achieving large effect sizes and statistically significant; the effect size for disability was [Standard Mean Difference (SMD) with 95% CI = -1.75 (-2.02, -1.48), p < 0.01], and the combined effect sizes of physical health and mental health for quality of life were [WMD (95% CI) = 4.18 (3.41, 4.95), p < 0.01; WMD (95% CI) = 3.23 (2.42, 4.04), p < 0.01] respectively. The incidence of adverse reactions was low. Meta regression and subgroup analysis showed that there was no significant effect on intervention measures (Tai Chi alone, Tai Chi as additional therapy, water Tai Chi), Tai Chi school (Chen and Yang) and the number of total intervention sessions (> 30 and ≤ 30). The evidence quality evaluation showed that the evidence of pain, physical health of quality of life and mental health score was medium quality, while the evidence of disability and adverse reactions was low quality. CONCLUSIONS: Tai Chi has an obvious effect of in relieving chronic low back pain. Tai Chi alone and Tai Chi as supplementary therapy have good effects. Tai Chi in water have not been verified. Chen style Tai Chi and Yang's Tai Chi, intervention more than 30 times or less than 30 times had no significant difference in the effect of intervention on CLBP.


Sujet(s)
Douleur chronique , Lombalgie , Tai Chi , Lombalgie/thérapie , Humains , Douleur chronique/thérapie , Essais contrôlés randomisés comme sujet , Résultat thérapeutique , Qualité de vie
18.
Clin Transl Med ; 14(8): e1782, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-39083563

RÉSUMÉ

BACKGROUND: Organising pneumonia (OP) is one of the most common and lethal diseases in the category of interstitial pneumonia, along with lung cancer. Reprogramming of lipid metabolism is a newly recognized hallmark of many diseases including cancer, cardiovascular disorders, as well as liver fibrosis and sclerosis. Increased levels of ceramides composed of sphingosine and fatty acid, are implicated in the development of both acute and chronic lung diseases. However, their pathophysiological significance in OP is unclear. The aim of this study was to investigate the role of lipid metabolism reprogramming in OP, focusing on inflammation and fibrosis. METHODS: Comprehensive multi-omics profiling approaches, including single-cell RNA sequencing, Visium CytAssist spatial transcriptomics, proteomics, metabolomics and mass spectrometry, were employed to analyze the tissues. OP mice model was utilized and molecular mechanisms were investigated in macrophages. RESULTS: The results revealed a significant association between OP and lipid metabolism reprogramming, characterized by an abnormal expression of several genes related to lipid metabolism, including CD36, SCD1, and CES1 mainly in macrophages. CD36 deficiency in alveolar macrophages, led to an increased expression of C16/24 ceramides that accumulated in mitochondria, resulting in mitophagy or mitochondrial dysfunction. The number of alveolar macrophages in OP was significantly reduced, which was probably due to the ferroptosis signaling pathway involving GSH/SLC3A2/GPX4 through CD36 downregulation in OP. Furthermore, macrophage secretion of DPP7 and FABP4 influenced epithelial cell fibrosis. CONCLUSIONS: CD36 inhibited the ferroptosis pathway involving SLC3A2/GPX4 in alveolar macrophages of OP tissue by regulating lipid metabolism, thus representing a new anti-ferroptosis and anti-fibrosis effect of CD36 mediated, at least in part, by ceramides. HIGHLIGHTS: Our findings reveal a significant association between organising pneumonia and lipid metabolism reprogramming and will make a substantial contribution to the understanding of the mechanism of organising pneumonia in patients.


Sujet(s)
Métabolisme lipidique , Animaux , Souris , Métabolisme lipidique/génétique , Modèles animaux de maladie humaine , Humains , Pneumopathie infectieuse/métabolisme , Pneumopathie infectieuse/génétique , Pneumopathie infectieuse/anatomopathologie , Souris de lignée C57BL , Mâle , Pneumonie organisée , Multi-omique
19.
Curr Org Synth ; 21(7): 889-902, 2024.
Article de Anglais | MEDLINE | ID: mdl-39044703

RÉSUMÉ

Allenamides are special allenes, and the unique reactivity, selectivity (both stereoselective and regionally selective) and stability of allenamides have been widely studied. In this review, the development of the free radical transformation of allenamides over the last few years will be summarized. This review discusses in detail in three parts: intermolecular radical addition to C- X (X = N, S, O, Se) bonds, metal salt mediated cyclization of allenamides, and photocatalytic cyclization of allenamides. In addition, reasonable details of the mechanisms are provided for the vast majority of these transformations.

20.
Clin Pharmacol Ther ; 116(3): 637-646, 2024 Sep.
Article de Anglais | MEDLINE | ID: mdl-38962850

RÉSUMÉ

Bispecific T-cell Engagers (TCEs) are promising anti-cancer treatments that bind to both the CD3 receptors on T cells and an antigen on the surface of tumor cells, creating an immune synapse, leading to killing of malignant tumor cells. These novel therapies have unique development challenges, with specific safety risks of cytokine release syndrome. These on-target adverse events fortunately can be mitigated and deconvoluted from efficacy via innovative dosing strategies, making clinical pharmacology key in the development of these therapies. This review assesses dose selection and the role of quantitative clinical pharmacology in the development of the first eight approved TCEs. Model informed drug development (MIDD) strategies can be used at every stage to guide TCE development. Mechanistic modeling approaches allow for (1) efficacious yet safe first-in-human dose selection as compared with in vitro minimum anticipated biological effect level (MABEL) approach; (2) rapid escalation and reducing number of patients with subtherapeutic doses through model-based adaptive design; (3) virtual testing of different step-up dosing regimens that may not be feasible to be evaluated in the clinic; and (4) selection and justification of the optimal clinical step-up and full treatment doses. As the knowledge base around TCEs continues to grow, the relevance and utilization of MIDD strategies for supporting the development and dose optimization of these molecules are expected to advance, optimizing the benefit-risk profile for cancer patients.


Sujet(s)
Anticorps bispécifiques , Tumeurs , Lymphocytes T , Humains , Lymphocytes T/effets des médicaments et des substances chimiques , Lymphocytes T/immunologie , Tumeurs/traitement médicamenteux , Anticorps bispécifiques/administration et posologie , Anticorps bispécifiques/pharmacologie , Anticorps bispécifiques/usage thérapeutique , Développement de médicament/méthodes , Relation dose-effet des médicaments , Animaux , Pharmacologie clinique/méthodes
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