Cuticular waxes synthesised in the endoplasmic reticulum of epidermal cells must be exported to the outer surface of the epidermis to fulfil their barrier function. Beyond transmembrane trafficking mediated by ABC transporters, little is known about the movement of wax molecules. In this study, we characterise a mutant named sugar-associated vitrified 1 (sav1), which exhibits a vitrified phenotype and displays a reduced root length when cultivated on sugar-free medium.
View Article and Find Full Text PDFPlant stems grow towards the incident light in response to unilateral blue light to optimize photosynthesis. However, our findings reveal that unilateral high-intensity blue light (HBL) triggers backlit lodging in etiolated cotton (Gossypium hirsutum ) hypocotyls when they are pulled approximately 1.5cm from the soil.
View Article and Find Full Text PDFThe asymmetrical distribution of auxin supports high intensity blue light (HBL)-mediated phototropism. Flavonoids, secondary metabolites induced by blue light and TRANSPARENT TESTA GLABRA1 (TTG1), alter auxin transport. However, the role of TTG1 in HBL-induced phototropism in Arabidopsis (Arabidopsis thaliana) remains unclear.
View Article and Find Full Text PDFObjectives: We developed a new Bakri balloon tamponade (BBT) placement technique after vaginal delivery, which aimed to be faster without balloon slippage. This study compared the new method with standard placement of BBT in women with postpartum hemorrhage (PPH) after vaginal delivery.
Material And Methods: This study was undertaken of women who underwent vaginal delivery at the obstetrics and gynecology departments of the Hospital of Chengdu University of Traditional Chinese Medicine, Sichuan Provincial Hospital for Women and Children, and Si Chuan JINXIN Women and Children Hospital between January 2014 and December 2020.
Phototropism is a classic adaptive growth response that helps plants to enhance light capture for photosynthesis. It was shown that hydrogen peroxide (HO) participates in the regulation of blue light-induced hypocotyl phototropism; however, the underlying mechanism is unclear. In this study, we demonstrate that the unilateral high-intensity blue light (HBL) could induce asymmetric distribution of HO in cotton hypocotyls.
View Article and Find Full Text PDFWhat Is Already Known About This Topic?: The effective implementation of cervical cancer examination programs requires improved cervical cancer screening coverage and quality.
What Is Added By This Report?: The detection rate of ≥high-grade squamous intraepithelial lesions (HSIL) in 6 hospitals was 19.6%.
Propane-1,2,3-triol-loaded polysulfone (PSF) microcapsules were prepared by the solvent evaporation method. The particle size of the microcapsules is about 140 μm. The shell wall thickness is about 17 μm approximately.
View Article and Find Full Text PDFThere is great economic and environmental value in recovering valuable metal ions from spent lithium-ion batteries (LIBs). A novel method that employs organic acid recovery using citric acid and salicylic acid was used to enhance the leaching of metal ions from the cathode materials of spent LIBs. The effects of the acid concentration, reducing agent content, solid to liquid (S : L) ratio, temperature, and leaching time were systematically analyzed and the optimal acid leaching process condition was determined through the results.
View Article and Find Full Text PDFObjective: Human epithelial growth factor receptor 2 (HER2) is overexpressed in several types of cancers. The correlation between tumor glucose activity and HER2 expression can vary. This study is a retrospective investigation of fluorine-18-fluorodeoxyglucose PET/computed tomography (18F-FDG PET/CT) and HER2 expression status in patients with lung adenocarcinoma.
View Article and Find Full Text PDFBackground And Objective: China carries a heavy burden of cervical cancer and has an alarmingly low cervical cancer screening rate. In order to achieve the goal of cervical cancer elimination, there is an urgent need for suitable methods and strategies in China.
Materials And Methods: A total 9972 woman who received cervical cancer screening services of National Cervical Cancer Screening Program in Rural Areas (NCCSPRA) in 8 project counties participated in this study.
Background: Immunotherapy targeting programmed cell death 1 (PD-1) or its ligand 1 (PD-L1) has shown promising results in non-small cell lung cancer (NSCLC) patients. Exploring PD-L1 expression could help to select NSCLC candidates for immunotherapy. Fluorine-18 fluorodeoxyglucose (FDG) PET/CT could provide phenotypic information on malignant tumors.
View Article and Find Full Text PDFObjective: Our purpose was to establish a simple and feasible method for monitoring and controlling the Tc-Technegas inhaled to improve the success ratio of imaging and ensure the imaging quality.
Materials And Methods: The relationship between the success ratio and the pulmonary ventilation counting rate (VCR) of 113 cases, the activity of perfusion imaging agents injected and the pulmonary perfusion counting rate (PCR) of another 114 cases were analysed retrospectively. And combined with the relationship between the surface radioactivity monitoring value and the SPECT probe counting rate of a pulmonary model, the effective range of the VCR and the surface radioactivity monitoring value were determined.
This study aimed to investigate the neuroprotective effect of heme oxygenase-1 (HO-1) on the PI3K/AKT signaling pathway in rats with cerebral hemorrhage. Adult male Sprague-Dawley rats were randomly divided into: a sham group, a model group and an HO-1 inhibitor group (ZnPP group). Functional defects after surgery were scored according to the Longa5 standard.
View Article and Find Full Text PDFBoth phototropins (phot1 and phot2) and cryptochromes (cry1 and cry2) were proven as the Arabidopsis thaliana blue light receptors. Phototropins predominately function in photomovement, and cryptochromes play a role in photomorphogenesis. Although cryptochromes have been proposed to serve as positive modulators of phototropic responses, the underlying mechanism remains unknown.
View Article and Find Full Text PDFObjective: To investigate the mechanism of dexmedetomidine (Dex) in improving brain damage induced by cerebral ischemia-reperfusion injury in rats.
Methods: Rats were randomly divided into a sham operation group, ischemia-reperfusion group, Dex group, piracetam group, and yohimbine + Dex group, with 12 rats per group. 2,3,5-Triphenyltetrazolium chloride staining was used to analyze cerebral infarct size.
Objectives: To investigate effect of miR-145 on learning and memory ability in rats with epilepsy.
Methods: Rats with epilepsy were induced by lithium chloride-pilocarpine. miR-145 antagomir and antagomir-control were injected into epileptic brains by the stereotactic technique, respectively.
Phototropins (phot1 and phot2) are blue-light receptors that control cotyledon flattening and positioning under strong light; however, their functional redundancy restricts our understanding of the specific roles of phot2. To identify the factors responsible for phot2-dependent cotyledon flattening and growth, we screened for light-insensitive mutants among mutagenized mutants in . The double mutant (), which is defective in cotyledon flattening and positioning but not the phototropic response was selected.
View Article and Find Full Text PDFThe radiological features of pulmonary sclerosing hemangioma (PSH) and pulmonary hamartoma are poorly specified. Thus, the present study aimed to compare and analyze the characteristics of fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG PET/CT) in PSH versus pulmonary hamartoma. F-FDG PET/CT characteristic findings of 12 patients with PSH and 14 patients with pulmonary hamartoma were retrospectively reviewed.
View Article and Find Full Text PDFTwo redundant blue-light receptors, known as phototropins (phot1 and phot2), influence a variety of physiological responses, including phototropism, chloroplast positioning, and stomatal opening in Arabidopsis thaliana. Whereas phot1 functions in both low- and high-intensity blue light (HBL), phot2 functions primarily in HBL. Here, we aimed to elucidate phot2-specific functions by screening for HBL-insensitive mutants among mutagenized Arabidopsis phot1 mutants.
View Article and Find Full Text PDFRoot waving responses have been attributed to both environmental and genetics factors, but the potential inducers and transducers of root waving remain elusive. Thus, the identification of novel signal elements related to root waving is an intriguing field of research. Genetic, physiological, cytological, live cell imaging, and pharmacological approaches provide strong evidence for the involvement of Arabidopsis thaliana NITRIC OXIDE-ASSOCIATED PROTEIN1 (AtNOA1) in salicylic acid (SA)-induced root waving.
View Article and Find Full Text PDFZhongguo Yi Liao Qi Xie Za Zhi
September 2011
Focusing on the heart rate control mode of acceleration sensor based rate responsive pacemakers, this paper implemented the design of activity--heart rate prediction system. Bluetooth module was used as communication means in activity--heart rate prediction system, and the slave computer was used to complete the acceleration signal acquisition and processing, map from acceleration signal to the pacing rate signal, and achieve real-time transmission of acceleration signal and heart rate signal. The master computer fulfilled real-time display and recording of acceleration signal and heart rate signal, moreover, it achieved control function to the slave computer algorithm through classification of 6 parameters.
View Article and Find Full Text PDFNan Fang Yi Ke Da Xue Xue Bao
May 2006
Objective: To explore the expression of transforming growth factor beta1 (TGFbeta1) and its type I receptors activin-like kinase 1 (ALK1) and ALK5 mRNA in the development of brain arteriovenous malformation (BAVM).
Methods: The mRNA expressions of TGFbeta1, ALK1and ALK5 were detected with semiquantitative RT-PCR in patients with BAVM.
Results: The expressions of TGFbeta1 and ALK5 mRNA increased significantly in BAVM, and their relative expression quantity were 0.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
June 2005
Objective: To study the mechanism of Ca(2+) on the apoptosis induced by hyperthermia in neonate rat hippocampal neurons to provide the applicative evidence of dantrolene for preventing brain injuries.
Methods: Dantrolene, Ca(2+) specific blocking agent, was used in the hyperthermia-induced apoptosis of primary hippocampal neurons in vitro to observe its effect on the apoptosis, fluorescent intensity, and dynamic change of Ca(2+) by flowcytometry and laser confocal microscopy.
Results: The rate of apoptosis was decreased significantly after hyperthermia treatment by dantrolene sodium.
Objective: To evaluate the effect of endovascular embolization of internal carotid-posterior communicating artery (IC-PC) aneurysm.
Methods: 145 patients with IC-PC aneurysms underwent endovascular embolization through the microcatheter under digital subtraction angiography (DSA). Of the 145 cases, 55 patients with 62 aneurysms were embolized by mechanical detachable spiral (MDS) and 90 patients with 106 aneurysms were embolized by Guglielmi detachable coil (GDC) or electrical detachable coil (EDC).
Di Yi Jun Yi Da Xue Xue Bao
April 2004
Objective: To study the changes of Ca2+ concentration mediated by N-methyl-D-aspartate (NMDA) receptor in the neurons in the preoptic area/anterior hypothalamus (PO/AH) of anoxic SD rats by investigating the properties of NMDA receptor.
Methods: The effects of NMDA receptor agonist NMDA and antagonist vaproic acid (VPA) on the [Ca2+]i in PO/AH neurons were observed in SD rats with anoxia.
Results: Under normal condition, the fluorescencet ratio was 0.