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1.
Artículo en Inglés | MEDLINE | ID: mdl-38913524

RESUMEN

Burn-through point (BTP) is a very key factor in maintaining the normal operation of the sintering process, which guarantees the yield and quality of sinter ore. Due to the characteristics of time-varying and multivariable coupling in the actual sintering process, it is difficult for traditional soft-sensor models to extract spatial-temporal features and reduce multistep prediction error accumulation. To address these issues, in this study, we propose a probabilistic spatial-temporal aware network, called BTPNet, which is used to extract spatial-temporal feature for accurate BTP multistep prediction. The BTPNet model consists of two parts: an encoder network and a decoder network. In the encoder network, the multichannel temporal convolutional network (MTCN) is employed to extract the temporal features. Meanwhile, we also propose a novel architectural unit called variables interaction-aware module (VIAM) to extract the spatial features. In the decoder network, to reduce the accumulated errors of the last step prediction, a probabilistic estimation (PE) method is proposed to improve the performance of multistep prediction. Finally, the experimental results on a real sintering process demonstrate the proposed BTPNet model outperforms state-of-the-art multistep prediction models.

2.
Int Immunopharmacol ; 137: 112492, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-38906005

RESUMEN

BACKGROUND: Local treatment may function synergistically with immunotherapy and targeted agents. This study aimed to assess the effectiveness and safety of transcatheter arterial chemoembolization (TACE) and hepatic artery infusion chemotherapy (HAIC) combined with tyrosine kinase inhibitors (TKIs) and programmed death-1 (PD-1) inhibitors in patients with initially unresectable hepatocellular carcinoma (uHCC). METHODS: A retrospective study was conducted on patients diagnosed with initially uHCC who received combined treatment of TACE-HAIC combined with TKIs and PD-1 inhibitors from July 2020 to February 2023. The primary endpoints were overall survival (OS) and progression free survival (PFS) and adverse events (AEs). Objective response rate (ORR), disease control rate (DCR) and conversion surgery rate (CSR), whereas the secondary endpoints. RESULTS: After screening, a total of 62 patients were selected for this study. The overall median OS was 18.2 (95% CI 16.24-20.16) months and median PFS was 9.2 (95% CI 7.24-11.16) months. Based on the modified Response Evaluation Criteria in Solid Tumors (mRECIST) criteria and RECIST v1.1 criteria, ORR was 67.7% (42/62), and the DCR was 90.3% (56/62), the CSR was 27.4% (17/62). The most common treatment-emergent adverse events (TEAEs) were transaminitis (56.4%, 35/62), nausea and vomiting (43.5%, 27/62), thrombocytopenia (37.1%, 23/62), abdominal pain (33.9%, 21/62), and fever (33.9%, 21/62). CONCLUSIONS: TKIs combined with PD-1 inhibitors plus TACE-HAIC therapy represents an effective and tolerable treatment option in patients with uHCC. Patients undergoing surgery after combination therapy may have survival benefits.


Asunto(s)
Carcinoma Hepatocelular , Quimioembolización Terapéutica , Inhibidores de Puntos de Control Inmunológico , Neoplasias Hepáticas , Inhibidores de Proteínas Quinasas , Humanos , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/tratamiento farmacológico , Carcinoma Hepatocelular/mortalidad , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/mortalidad , Masculino , Femenino , Persona de Mediana Edad , Quimioembolización Terapéutica/métodos , Quimioembolización Terapéutica/efectos adversos , Estudios Retrospectivos , Anciano , Inhibidores de Proteínas Quinasas/uso terapéutico , Inhibidores de Proteínas Quinasas/efectos adversos , Inhibidores de Proteínas Quinasas/administración & dosificación , Inhibidores de Puntos de Control Inmunológico/uso terapéutico , Inhibidores de Puntos de Control Inmunológico/efectos adversos , Adulto , Receptor de Muerte Celular Programada 1/antagonistas & inhibidores , Resultado del Tratamiento , Terapia Combinada , Infusiones Intraarteriales , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Arteria Hepática
3.
Materials (Basel) ; 17(9)2024 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-38730755

RESUMEN

The production of wheat straw waste board materials encounters challenges, including inadequate inherent adhesiveness and the utilization of environmentally harmful adhesives. Employing a hot-pressed method for converting wheat straw into board materials represents a positive stride towards the resourceful utilization of agricultural wastes. This study primarily focuses on examining the influence of hot-pressing process conditions on the mechanical properties of wheat straw board materials pretreated with dilute acid. Additionally, it assesses the necessity of dilute acid treatment and optimizes the hot-pressing conditions to achieve optimal results at 15 MPa, 2 h, and 160 °C. Furthermore, a comprehensive process is developed for preparing wheat straw hot-pressed board materials by combining dilute acid pretreatment with surface modification treatments, such as glutaraldehyde, citric acid, and rosin. Finally, a thorough characterization of the mechanical properties of the prepared board materials is conducted. The results indicate a substantial improvement in tensile strength across all modified wheat straw board materials compared to untreated ones. Notably, boards treated with glutaraldehyde exhibited the most significant enhancement, achieving a tensile strength of 463 kPa, bending strength of 833 kPa, and a water absorption rate of 14.14%. This study demonstrates that combining dilute acid pretreatment with surface modification treatments effectively enhances the performance of wheat straw board materials, offering a sustainable alternative to traditional wood-based board materials.

4.
Physiol Plant ; 176(3): e14324, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38705866

RESUMEN

Broomrape (Orobanche cumana) negatively affects sunflower, causing severe yield losses, and thus, there is a need to control O. cumana infestation. Brassinosteroids (BRs) play key roles in plant growth and provide resilience to weed infection. This study aims to evaluate the mechanisms by which BRs ameliorate O. cumana infection in sunflower (Helianthus annuus). Seeds were pretreated with BRs (1, 10, and 100 nM) and O. cumana inoculation for 4 weeks under soil conditions. O. cumana infection significantly reduced plant growth traits, photosynthesis, endogenous BRs and regulated the plant defence (POX, GST), BRs signalling (BAK1, BSK1 to BSK4) and synthesis (BRI1, BR6OX2) genes. O. cumana also elevated the levels of malondialdehyde (MDA), hydroxyl radical (OH-), hydrogen peroxide (H2O2) and superoxide (O2 •-) in leaves/roots by 77/112, 63/103, 56/97 and 54/89%, as well as caused ultrastructural cellular damages in both leaves and roots. In response, plants activated a few enzymes, superoxide dismutase (SOD), peroxidase (POD) and reduced glutathione but were unable to stimulate the activity of ascorbate peroxidase (APX) and catalase (CAT) enzymes. The addition of BRs (especially at 10 nM) notably recovered the ultrastructural cellular damages, lowered the production of oxidative stress, activated the key enzymatic antioxidants and induced the phenolic and lignin contents. The downregulation in the particular genes by BRs is attributed to the increased resilience of sunflower via a susceptible reaction. In a nutshell, BRs notably enhanced the sunflower resistance to O. cumana infection by escalating the plant immunity responses, inducing systemic acquired resistance, reducing oxidative or cellular damages, and modulating the expression of BR synthesis or signalling genes.


Asunto(s)
Brasinoesteroides , Helianthus , Orobanche , Semillas , Helianthus/efectos de los fármacos , Helianthus/inmunología , Helianthus/fisiología , Brasinoesteroides/farmacología , Brasinoesteroides/metabolismo , Orobanche/fisiología , Orobanche/efectos de los fármacos , Semillas/efectos de los fármacos , Semillas/inmunología , Malezas/efectos de los fármacos , Malezas/fisiología , Enfermedades de las Plantas/parasitología , Enfermedades de las Plantas/inmunología , Inmunidad de la Planta/efectos de los fármacos , Regulación de la Expresión Génica de las Plantas/efectos de los fármacos , Fotosíntesis/efectos de los fármacos , Raíces de Plantas/inmunología , Raíces de Plantas/efectos de los fármacos , Peróxido de Hidrógeno/metabolismo , Hojas de la Planta/efectos de los fármacos , Hojas de la Planta/inmunología , Proteínas de Plantas/metabolismo , Proteínas de Plantas/genética , Malondialdehído/metabolismo
5.
Langenbecks Arch Surg ; 409(1): 168, 2024 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-38819706

RESUMEN

PURPOSE: To evaluate the safety and efficacy of two-step vascular exclusion and in situ hypothermic portal perfusion in patients with end-stage hepatic hydatidosis. METHODS: This study involved patients with advanced hepatic hydatid disease undergoing surgical treatment between 2022 and 2023, which included resection and reconstruction of the hepatic veins, inferior vena cava (IVC), and portal vein (PV). We described the technical details of liver resection and vascular reconstruction, as well as the use of two-step vascular exclusion and in situ hypothermic portal perfusion techniques during the vascular reconstruction process. RESULT: We included 7 patients with advanced hepatic hydatid disease who underwent surgical resection using two-step vascular exclusion and in situ hypothermic portal perfusion. The mean duration of surgery was 12.5 h (range, 7.5-15.0 h). The average hepatic ischemia time was 45 min (range, 25-77 min), while the occlusion time of the IVC was 87 min (range, 72-105 min). The total blood loss was 1000 milliliters (range, 500-1250 milliliters). Postoperatively, patients exhibited good recovery of liver and renal function. The mean ICU stay was 2 days (range, 1-3 days), and the mean postoperative hospital stay was 13 days (range, 9-16 days), with no Grade III or above complications observed during a mean follow-up period of 15 months (range, 9-24 months), CONCLUSION: two-step vascular exclusion and in situ hypothermic portal perfusion for surgical resection of end-stage hepatic hydatid disease is safe and effective. This significantly reduces the anhepatic time.


Asunto(s)
Equinococosis Hepática , Hepatectomía , Vena Porta , Vena Cava Inferior , Humanos , Equinococosis Hepática/cirugía , Equinococosis Hepática/diagnóstico por imagen , Masculino , Femenino , Hepatectomía/métodos , Adulto , Persona de Mediana Edad , Vena Porta/cirugía , Vena Cava Inferior/cirugía , Hipotermia Inducida , Resultado del Tratamiento , Perfusión/métodos , Estudios Retrospectivos , Venas Hepáticas/cirugía , Anciano
6.
Food Chem ; 452: 139548, 2024 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-38728894

RESUMEN

In this study, an electrochemical sensor based on MoS2 with enhanced electrochemical signals from electrochemically activated carbon cloth (EACC) electrodes and cross-linked o-aminothiophenol functionalized AuNPs (o-ATP@AuNPs) was developed for the detection of the unsaturated vegetable oil antioxidant tert-butylhydroquinone (TBHQ). In this approach, carbon cloth is activated through the implementation of electrochemical methods, thereby effectively increasing its specific surface area. The resulting EACC, serving as an electrode substrate, enables the growth of additional nanomaterials and enhances conductivity. The incorporation of MoS2 effectively augments the sensitivity of the electrochemical sensor. Subsequently, MIP/MoS2/EMCC is formed via electropolymerization, utilizing TBHQ as the template molecule and o-ATP@AuNPs as the functional monomer. The SS bond of o-ATP ensures a strong and stable connection between MoS2 and o-ATP@AuNPs, thereby facilitating the immobilization of MIP. In addition, the high conductivity possessed by o-ATP@AuNPs could effectively improve the sensitivity of the electrochemical sensor. Under the optimal conditions, MIP/MoS2/EMCC could determine TBHQ in the range of 1 × 10-3 µM to 120 µM by differential pulse voltammetry (DPV) with a detection line of 0.72 nM. The proposed MIP/MoS2/EMCC is expected to be applied in the future for the selective and sensitive detection of TBHQ in vegetable oils.


Asunto(s)
Técnicas Electroquímicas , Oro , Hidroquinonas , Nanopartículas del Metal , Hidroquinonas/análisis , Hidroquinonas/química , Oro/química , Técnicas Electroquímicas/instrumentación , Nanopartículas del Metal/química , Compuestos de Anilina/química , Carbono/química , Polímeros/química , Compuestos de Sulfhidrilo/análisis , Compuestos de Sulfhidrilo/química , Límite de Detección , Electrodos
8.
Phytochemistry ; 223: 114106, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38657885

RESUMEN

Daphmacrimines A-K (1-11) were isolated from the leaves and stems of Daphniphyllum macropodum Miq. Their structures and stereochemistries were determined by extensive techniques, including HRESIMS, NMR, ECD, IR, and single-crystal X-ray crystallography. Daphmacrimines A-D (1-4) are unprecedented Daphniphyllum alkaloids with a 2-oxazolidinone ring. Daphmacrimine I (9) contains a nitrile group, which is relatively rare in naturally occurring alkaloids. The abilities of daphmacrimines A-D and daphmacrimines G-K to enhance lysosomal biogenesis were evaluated through LysoTracker Red staining. Daphmacrimine K (11) can induce lysosomal biogenesis and promote autophagic flux.


Asunto(s)
Alcaloides , Daphniphyllum , Alcaloides/química , Alcaloides/aislamiento & purificación , Alcaloides/farmacología , Estructura Molecular , Daphniphyllum/química , Hojas de la Planta/química , Humanos , Cristalografía por Rayos X , Lisosomas/efectos de los fármacos , Lisosomas/metabolismo , Tallos de la Planta/química , Conformación Molecular
9.
Cureus ; 16(2): e54577, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38524072

RESUMEN

Somatic delusions occur in various psychiatric disorders and are associated with higher mortality and lower quality of life. In this case report, we present a 68-year-old man with the diagnosis of schizoaffective disorder, bipolar type with associated somatic delusions, and auditory hallucinations. His somatic delusions were alleviated by the 20th ECT treatment with additional clinical improvements in his speech, thought processes, and judgment. This case report supports the utilization of ECT for patients with schizoaffective disorder and somatic delusions.

11.
Blood Adv ; 8(7): 1651-1666, 2024 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-38315834

RESUMEN

ABSTRACT: Stress erythropoiesis can be influenced by multiple mediators through both intrinsic and extrinsic mechanisms in early erythroid precursors. Single-cell RNA sequencing was conducted on spleen tissue isolated from mice subjected to phenylhydrazine and serial bleeding to explore novel molecular mechanisms of stress erythropoiesis. Our results showed prominent emergence of early erythroblast populations under both modes of anemic stress. Analysis of gene expression revealed distinct phases during the development of emerging erythroid cells. Interestingly, we observed the presence of a "hiatus" subpopulation characterized by relatively low level of transcriptional activities that transitions between early stages of emerging erythroid cells, with moderate protein synthesis activities. Moreover, single-cell analysis conducted on macrophage populations revealed distinct transcriptional programs in Vcam1+ macrophages under stress. Notably, a novel marker, CD81, was identified for labeling central macrophages in erythroblastic islands (EBIs), which is functionally required for EBIs to combat anemic stress. These findings offer fresh insights into the intrinsic and extrinsic pathways of early erythroblasts' response to stress, potentially informing the development of innovative therapeutic approaches for addressing anemic-related conditions.


Asunto(s)
Anemia , Bazo , Ratones , Animales , Bazo/metabolismo , Eritroblastos/metabolismo , Anemia/etiología , Anemia/metabolismo , Eritropoyesis/fisiología , Macrófagos/metabolismo
12.
Plants (Basel) ; 12(23)2023 Dec 02.
Artículo en Inglés | MEDLINE | ID: mdl-38068693

RESUMEN

Significant progress has been made in the functions of auxin efflux transporter PIN-FORMED (PIN) genes for the regulation of growth and development in rice. However, knowledge on the roles of OsPIN genes in abiotic stresses is limited. We previously reported that the mutation of OsPIN1b alters rice architecture and root gravitropism, while the role of OsPIN1b in the regulation of rice abiotic stress adaptations is still largely elusive. In the present study, two homozygous ospin1b mutants (C1b-1 and C1b-2) were employed to investigate the roles of OsPIN1b in regulating abiotic stress adaptations. Low temperature gradually suppressed OsPIN1b expression, while osmotic stress treatment firstly induced and then inhibited OsPIN1b expression. Most OsPIN genes and auxin biosynthesis key genes OsYUC were up-regulated in ospin1b leaves, implying that auxin homeostasis is probably disturbed in ospin1b mutants. The loss of function of OsPIN1b significantly decreased rice chilling tolerance, which was evidenced by decreased survival rate, increased death cells and ion leakage under chilling conditions. Compared with the wild-type (WT), ospin1b mutants accumulated more hydrogen peroxide (H2O2) and less superoxide anion radicals (O2-) after chilling treatment, indicating that reactive oxygen species (ROS) homeostasis is disrupted in ospin1b mutants. Consistently, C-repeat binding factor (CBF)/dehydration-responsive element binding factor (DREB) genes were downregulated in ospin1b mutants, implying that OsDREB genes are implicated in OsPIN1b-mediated chilling impairment. Additionally, the mutation of OsPIN1b led to decreased sensitivity to abscisic acid (ABA) treatment in seed germination, impaired drought tolerance in the seedlings and changed expression of ABA-associated genes in rice roots. Taken together, our investigations revealed that OsPIN1b is implicated in chilling and drought tolerance in rice and provide new insight for improving abiotic stress tolerance in rice.

13.
Se Pu ; 41(11): 960-975, 2023 Nov.
Artículo en Chino | MEDLINE | ID: mdl-37968815

RESUMEN

Various types of milk powder purportedly providing diverse health functions have emerged with the growth of the country's elderly population. Some manufacturers illegally add chemical drugs to their products to achieve their reported benefits, which poses a threat to consumer health. The existing standard methods are inapplicable to such complex sample matrices and require testing based on functional claims and classification. These limitations not only consume manpower and resources but also seriously impede daily regulatory efforts to detect unknown risk substances. In this study, a high-throughput method for the screening and quantitative analysis of 300 illegally added chemical drugs in functional milk powder and an identification strategy for unknown structural analogues were established using Zeno SWATH® data-independent acquisition (DIA) ultra-high performance liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS) technology combined with a QuEChERS sample purification method. The QuEChERS purification process was developed according to the characteristics of milk powder matrix. The supernatant was separated on a Kinetex F5 column (100 mm×3.0 mm, 2.6 µm) by gradient elution using 5 mmol/L ammonium formate aqueous solution (0.1% (v/v) formic acid, ) and methanol-acetonitrile (1∶1, v/v) as mobile phases. The method was validated in terms of selectivity, linearity, limits of detection and quantification (LODs and LOQs, respectively), matrix effect, accuracy, and precision. Based on a screening database for the 300 target substances, electron-activated dissociation (EAD) fragmentation was applied to obtain rich secondary MS fragmentation information, and unknown structural analogues were identified and confirmed through fragment attribution analysis. The results indicated that all compounds had good linear relationships in certain ranges with correlation coefficients >0.99. The LODs and LOQs were 0.04-2.7 and 0.2-8.0 µg/kg, respectively. The average recoveries at three spiked levels were in the range of 73.1%-125.2%, and the relative standard deviations were ≤14.8% (n=6). When the developed method was applied to detect illegally added chemicals in 60 functional milk powder samples, it detected benzoguanidine and sildenafil and successfully identified ethylphenidate, which is the structural analogue of an amphetamine. The proposed method is simple, sensitive, and accurate; thus, it may have practical application value for the daily supervision and law enforcement of milk powders with reported health functions.


Asunto(s)
Leche , Espectrometría de Masas en Tándem , Humanos , Anciano , Animales , Polvos/análisis , Leche/química , Cromatografía Líquida de Alta Presión , Citrato de Sildenafil/análisis
14.
Medicine (Baltimore) ; 102(47): e36079, 2023 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-38013386

RESUMEN

BACKGROUND: Stroke is a neurological disease with many common complications that reduce the activities of daily living and the quality of life of patients. Traditional Chinese medicine (TCM) rehabilitation techniques, scalp acupuncture, and TCM can relieve spasticity symptoms and recovery from physical obstacles is significant. METHODS: Three hundred twenty-one patients with post-stroke limb spasticity were randomly divided into trial and control groups, with 159 and 162 patients in the trial and control groups, respectively. The control group received basic treatment combined with modern rehabilitation techniques, whereas the trial group received basic treatment combined with TCM, Tuina, and scalp acupuncture with kinesiotherapy. The treatment course in both groups was 4 weeks. The Modified Ashworth Scale, magnetic resonance imaging, and Stroke Specific Quality of Life Scale were used to evaluate limb spasticity, activities of daily living, and quality of life, respectively. PASW 18.0 was used for statistical analysis. RESULTS: With a longer treatment period, the improvement in limb spasticity was greater in the trial group than in the control group (P < .05). Similarly, improvements in activities of daily living and quality of life were better in the trial group than in the control group (P < .05). CONCLUSION: The TCM rehabilitation program using Tongjing Tiaoxing combined with scalp acupuncture and kinesiotherapy can effectively treat spasticity symptoms in stroke patients and improve their activities of daily living and quality of life.


Asunto(s)
Terapia por Acupuntura , Rehabilitación de Accidente Cerebrovascular , Accidente Cerebrovascular , Humanos , Medicina Tradicional China/métodos , Actividades Cotidianas , Calidad de Vida , Resultado del Tratamiento , Accidente Cerebrovascular/terapia , Terapia por Acupuntura/métodos , Espasticidad Muscular/etiología , Espasticidad Muscular/rehabilitación , Rehabilitación de Accidente Cerebrovascular/métodos
15.
Cancer Med ; 12(17): 18306-18316, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37609808

RESUMEN

OBJECTIVE: This study aims to develop a risk prediction model for chemotherapy-induced nausea and vomiting (CINV) in cancer patients receiving highly emetogenic chemotherapy (HEC) and identify the variables that have the most significant impact on prediction. METHODS: Data from Tianjin Medical University General Hospital were collected and subjected to stepwise data preprocessing. Deep learning algorithms, including deep forest, and typical machine learning algorithms such as support vector machine (SVM), categorical boosting (CatBoost), random forest, decision tree, and neural network were used to develop the prediction model. After training the model and conducting hyperparameter optimization (HPO) through cross-validation in the training set, the performance was evaluated using the test set. Shapley additive explanations (SHAP), partial dependence plot (PDP), and Local Interpretable Model-Agnostic Explanations (LIME) techniques were employed to explain the optimal model. Model performance was assessed using AUC, F1 score, accuracy, specificity, sensitivity, and Brier score. RESULTS: The deep forest model exhibited good discrimination, outperforming typical machine learning models, with an AUC of 0.850 (95%CI, 0.780-0.919), an F1 score of 0.757, an accuracy of 0.852, a specificity of 0.863, a sensitivity of 0.784, and a Brier score of 0.082. The top five important features in the model were creatinine clearance (Ccr), age, gender, anticipatory nausea and vomiting, and antiemetic regimen. Among these, Ccr had the most significant predictive value. The risk of CINV decreased with increased Ccr and age, while it was higher in the presence of anticipatory nausea and vomiting, female gender, and non-standard antiemetic regimen. CONCLUSION: The deep forest model demonstrated good discrimination in predicting the risk of CINV in cancer patients prescribed HEC. Kidney function, as represented by Ccr, played a crucial role in the model's prediction. The clinical application of this predictive tool can help assess individual risks and improve patient care by proactively optimizing the use of antiemetics in cancer patients receiving HEC.


Asunto(s)
Antieméticos , Antineoplásicos , Aprendizaje Profundo , Neoplasias , Humanos , Antieméticos/uso terapéutico , Antineoplásicos/efectos adversos , Vómitos/inducido químicamente , Vómitos/tratamiento farmacológico , Náusea/inducido químicamente , Náusea/diagnóstico , Náusea/tratamiento farmacológico , Neoplasias/complicaciones , Neoplasias/tratamiento farmacológico
16.
Ecotoxicol Environ Saf ; 264: 115402, 2023 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-37634481

RESUMEN

Biodegradable mulch films are recognized as a promising substitute of polyethylene (PE) films to alleviate the "white pollution". Biodegradable mulch films with optimum degradation rates increase crop yield even compared to PE films. However, the mechanisms underlying this yield-increasing effect remains elusive. In this study, three biodegradable film treatments (BFM1, BFM2 and BFM3) and one PE film treatment (PFM) were used to evaluate their effects on soil and winter potatoes, and a partial least squares path model (PLS-PM) was constructed to investigate their relationships. The degradation rates of films under different treatments were ranked as BFM3 > BFM2 >BFM1 > PFM, and presented distinctive effects on soil properties and nutrients, structure of soil bacterial community, and yield traits of winter potatoes. The PLS-PM showed that mulch treatments affected potato yield through effects on soil properties (soil water and temperature) and soil nutrients (TOC, DOC, TN and NO3--N). The disintegration of the biodegradable films decreased soil water content and temperature, and reduced the loss of soil nutrients in the topsoil at the later growth stage of winter potatoes compared to PE films. Additionally, the elevated content of soil TN and NO3--N under treatment BFM1 may play a key role in its yield-increasing effect on potatoes compared to treatments PFM and BFM2. Thus, biodegradable mulch films with proper degradation rates regulate soil TN and NO3--N through their effects on soil water and temperature, and subsequently improve the yield of winter potatoes compared to PE mulch films.


Asunto(s)
Plásticos Biodegradables , Solanum tuberosum , Suelo , Agricultura , Polietileno , Agua
17.
Cell Signal ; 111: 110853, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37586467

RESUMEN

OBJECTIVE: To evaluate the effects and possible mechanisms of circular RNAs (circRNAs) on diabetic myocardial fibrosis (DMF). METHODS: We used an in vivo mice model of streptozotocin (STZ)-induced diabetes and conducted in vitro studies using cultured mouse cardiac fibroblast cells (CFs). RESULTS: We found that the expression of circ-AMOTL1 was significantly upregulated in the myocardial tissue of diabetic mice compared to that in normal tissues. Inhibition of circ-AMOTL1 improved cardiac function in mice with type I diabetes and significantly repressed STZ-induced myocardial mesenchymal and perivascular fibrosis. In addition, silencing circ-AMOTL1 inhibited cell proliferation, decreased the expression levels of TGF-ß1, collagen 1, collagen III, and α-SMA, and reduced the levels of ROS and NO in HG-treated CFs. Our data also indicated that silencing circ-AMOTL1 significantly reduced the expression of myristoylated alanine-rich C-kinase substrate (MARCKS). Finally, circ-AMOTL1 combined with the RNA-binding protein EIF4A3 to improve MARCKS stability. Moreover, co-transfection with si-circ-AMOTL1 and MARCKS reversed the effects of si-circ-AMOTL1 on cell proliferation, fibrotic marker proteins, and ROS and NO levels in vitro. CONCLUSION: Our data suggest that circ-AMOTL1 plays a key role in STZ-induced DMF by modulating MARCKS, and that targeting circ-AMOTL1 may be a potential strategy to treat DMF.


Asunto(s)
Diabetes Mellitus Experimental , Cardiomiopatías Diabéticas , MicroARNs , Ratones , Animales , Cardiomiopatías Diabéticas/genética , Diabetes Mellitus Experimental/metabolismo , Especies Reactivas de Oxígeno , Fibrosis , Proliferación Celular , Colágeno , MicroARNs/metabolismo
18.
Hum Cell ; 36(6): 2259-2269, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37603218

RESUMEN

Peritoneal mesenchymal stromal cells (pMSCs) are isolated from peritoneal dialysis (PD) effluent, and treatment with the pMSCs reduces peritoneal membrane injury in rat model of PD. This study was designed to verify the identity of the pMSCs. pMSCs were grown in plastic dishes for 4-7 passages, and their cell surface phenotype was examined by staining with a panel of 242 antibodies. The positive stain of each target protein was determined by an increase in fluorescence intensity as compared with isotype controls in flow cytometrical analysis. Here, we showed that pMSCs predominantly expressed CD9, CD26, CD29, CD42a, CD44, CD46, CD47, CD49b, CD49c, CD49e, CD54, CD55, CD57, CD59, CD63, CD71, CD73, CD81, CD90, CD98, CD147, CD151, CD200, CD201, ß2-micoglobulin, epithelial growth factor receptor, human leukocyte antigen (HLA) class 1, and, to a lesser extent, CD31, CD45RO, CD49a, CD49f, CD50, CD58, CD61, CD105, CD164, and CD166. These cells lacked expression of most hematopoietic markers such as CD11b, CD14, CD19, CD34, CD40, CD80, CD79, CD86, and HLA-DR. There was 38.55% difference in the expression of 83 surface proteins between bone marrow (BM)-derived MSCs and pMSCs, and 14.1% in the expression of 242 proteins between adipose tissue (AT)-derived MSCs and pMSCs. The BM-MSCs but not both AT-MSCs and pMSCs express cytokine receptors (IFNγR, TNFI/IIR, IL-1R, IL-4R, IL-6R, and IL-7R). In conclusion, pMSCs exhibited a typical cell surface phenotype of MSCs, which was not the same as on BM-MSCs or AT-MSCs, suggesting that the pMSCs may represent a different MSC lineage from peritoneal cavity.

19.
Plants (Basel) ; 12(15)2023 Jul 28.
Artículo en Inglés | MEDLINE | ID: mdl-37570963

RESUMEN

The auxin efflux transporter PIN-FORMED (PIN) family is one of the major protein families that facilitates polar auxin transport in plants. Here, we report that overexpression of OsPIN9 leads to altered plant architecture and chilling tolerance in rice. The expression profile analysis indicated that OsPIN9 was gradually suppressed by chilling stress. The shoot height and adventitious root number of OsPIN9-overexpressing (OE) plants were significantly reduced at the seedling stage. The roots of OE plants were more tolerant to N-1-naphthylphthalamic acid (NPA) treatment than WT plants, indicating the disturbance of auxin homeostasis in OE lines. The chilling tolerance assay showed that the survival rate of OE plants was markedly lower than that of wild-type (WT) plants. Consistently, more dead cells, increased electrolyte leakage, and increased malondialdehyde (MDA) content were observed in OE plants compared to those in WT plants under chilling conditions. Notably, OE plants accumulated more hydrogen peroxide (H2O2) and less superoxide anion radicals (O2-) than WT plants under chilling conditions. In contrast, catalase (CAT) and superoxide dismutase (SOD) activities in OE lines decreased significantly compared to those in WT plants at the early chilling stage, implying that the impaired chilling tolerance of transgenic plants is probably attributed to the sharp induction of H2O2 and the delayed induction of antioxidant enzyme activities at this stage. In addition, several OsRboh genes, which play a crucial role in ROS production under abiotic stress, showed an obvious increase after chilling stress in OE plants compared to that in WT plants, which probably at least in part contributes to the production of ROS under chilling stress in OE plants. Together, our results reveal that OsPIN9 plays a vital role in regulating plant architecture and, more importantly, is involved in regulating rice chilling tolerance by influencing auxin and ROS homeostasis.

20.
ACS Nano ; 17(15): 14883-14892, 2023 Aug 08.
Artículo en Inglés | MEDLINE | ID: mdl-37487002

RESUMEN

Lightweight, flexible, and noncombustible thermo-acoustic insulating (TAI) materials have great potential in vehicles, cold-chain transportation, and aerospace engineering, where weight and space savings are critical. However, the TAI capabilities of many commodities are hindered by the lack of diverse and reasonable resonant cavities with broadband and highly efficient acoustic responsiveness. This study demonstrates a layer-by-layer freeze-casting method for superelastic cellular aerogel construction from varied nanofibers and ice particulates with widely distributed resonant cavities from 0.5 to 300 µm. The method enabled the cumulative freezing of the nanofiber solution from one side to the other side, resulting in vertical pore channels with random holes across the entire freezing distance. The formed cellular networks of stable hinged ternary nanofiber membranes, functionalized as ultrathin nanofiber drums, exhibit strong resonances and efficiently dissipate sound waves in a broad frequency range. A high noise reduction coefficient of 0.65 at a frequency range of 63-6300 Hz and a low thermal conductivity of 0.026 W m-1 K-1 at room temperature was obtained. This work presents the bottom-up fabrication of high-performance TAI aerogels that are beneficial for practical energy-saving devices and buildings and broadband acoustic absorption applications.

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