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1.
Food Res Int ; 191: 114738, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39059928

ABSTRACT

Salt-tolerant proteases with remarkable stability are highly desirable biocatalysts in the salt-fermented food industry. In this study, the undigested autocleavage product of HlyA (halolysin A), a low-salt adapted halolysin from halophilic archaeon Halococcus salifodinae, was investigated. HlyA underwent autocleavage of its C-terminal extension (CTE) at temperatures over 40 °C or NaCl concentrations below 2 M to yield HlyAΔCTE. HlyAΔCTE demonstrated robust stability over a wide range of -20-60 °C, 0.5-4 M NaCl, and pH 6.0-10.0 for at least 72 h. Notably, HlyAΔCTE is the first reported halolysin with such exceptional stability. Compared with HlyA, HlyAΔCTE preferred high temperatures (50-75 °C), low salinities (0.5-2.5 M NaCl), and near-neutral (pH 6.5-8.0) conditions to achieve high activity, consistently with its production conditions. HlyAΔCTE displayed a higher Vmax value against azocasein than HlyA. During fish sauce fermentation, HlyAΔCTE significantly enhanced fish protein hydrolysis, indicating its potential as a robust biocatalyst in the salt-fermented food industry.


Subject(s)
Fermentation , Fermented Foods , Sodium Chloride , Fermented Foods/microbiology , Sodium Chloride/chemistry , Enzyme Stability , Fish Products/analysis , Hydrogen-Ion Concentration , Halococcus/metabolism , Archaeal Proteins/metabolism , Archaeal Proteins/chemistry , Peptide Hydrolases/metabolism , Temperature
2.
Extremophiles ; 28(2): 22, 2024 Mar 28.
Article in English | MEDLINE | ID: mdl-38546878

ABSTRACT

The taxonomic status of some species of Halobellus, Haloferax, Halogranum, and Haloplanus within the family Haloferacaceae was elucidated by phylogenetic, phylogenomic, and comparative genomic analyses. The relative species of each genus should constitute a single species based on the overall genome-related indexes proposed for species demarcation. The cutoff values of AAI (72.1%), ANI (82.2%), and rpoB' gene similarity (90.7%) were proposed to differentiate genera within the family Haloferacaceae. According to these standards, a novel genus related to the genus Halobaculum was proposed to accommodate Halobaculum halophilum Gai3-2 T and Halobaculum salinum NJ-3-1 T. Five halophilic archaeal strains, DT31T, DT55T, DT92T, SYNS20T, and YSMS11T, isolated from a tidal flat and a marine solar saltern in China, were subjected to polyphasic classification. The phenotypic, phylogenetic, phylogenomic, and comparative genomic analyses revealed that strains DT31T (= CGMCC 1.18923 T = JCM 35417 T), DT55T (= CGMCC 1.19048 T = JCM 36147 T), DT92T (= CGMCC 1.19057 T = JCM 36148 T), SYNS20T (= CGMCC 1.62628 T = JCM 36154 T), and YSMS11T (= CGMCC 1.18927 T = JCM 34912 T) represent five novel species of the genus Halobaculum, for which the names, Halobaculum lipolyticum sp. nov., Halobaculum marinum sp. nov., Halobaculum litoreum sp. nov., Halobaculum halobium sp. nov., and Halobaculum limi sp. nov., are proposed.


Subject(s)
Euryarchaeota , Halobacteriaceae , Phylogeny , DNA, Archaeal/genetics , RNA, Ribosomal, 16S/genetics , Sequence Analysis, DNA , Euryarchaeota/genetics , China , Glycolipids
3.
Artif Intell Med ; 141: 102558, 2023 07.
Article in English | MEDLINE | ID: mdl-37295901

ABSTRACT

Traditional Chinese medicine (TCM) has gradually played an indispensable role in people's health maintenance, especially in the treatment of chronic diseases. However, there is always uncertainty and hesitation in the judgment and understanding of diseases by doctors, which affects the status recognition and optimal diagnosis and treatment decision-making of patients. In order to overcome the above problems, we lead into probabilistic double hierarchy linguistic term set (PDHLTS) to accurately describe language information in traditional Chinese medicine and make decisions. In this paper, a multi-criteria group decision making (MCGDM) model is constructed based on the MSM-MCBAC (Maclaurin symmetric mean-MultiCriteria Border Approximation area Comparison) method in the PDHL environment. Firstly, a PDHL weighted Maclaurin symmetric mean (PDHLWMSM) operator is proposed to aggregate the evaluation matrices of multiple experts. Then, combined with the BWM and maximizing deviation method, a comprehensive weight determination method is put forward to calculate the weights of criteria. Furthermore, we propose PDHL MSM-MCBAC method based on the Multi-Attributive Border Approximation area Comparison (MABAC) method and the PDHLWMSM operator. Finally, an example of a selection of TCM prescriptions is used and some comparative analyses are made to verify the effectiveness and superiority of this paper.


Subject(s)
Fuzzy Logic , Medicine, Chinese Traditional , Humans , Decision Making , Linguistics , Uncertainty
4.
Article in English | MEDLINE | ID: mdl-36430064

ABSTRACT

BACKGROUND: Bacteria are readily nourished in airtight environments with high humidity, such as storage cabinets, clothing closets, and corners, where ventilation is normally low and humidity is high. OBJECTIVES: We characterized the role of humidity and ventilation in bacterial growth and genus distribution at different temperatures (26 °C and 34 °C). METHODS: Fresh pork, which was used as the substrate for bacterial culture, was placed in storage cabinets. Bacterial growth and genera distribution on the surface of pork placed in a storage cabinet under different temperatures (26 °C and 34 °C); relative humidity levels (RH: 50%, 70%, 90%); and ventilation conditions (no ventilation and low, medium, and high levels of ventilation) were assessed by rDNA sequencing. RESULTS: Increased ventilation and reduced humidity significantly decreased bacterial growth at 26 °C and 34 °C. The contribution of increased ventilation to the reduction in bacterial growth exceeded that of decreased humidity. Ventilation had the greatest effect on reducing bacterial growth compared to the unventilated conditions at 70% RH. At 34 °C, medium and high levels of ventilation were required to reduce bacterial growth. High temperatures greatly increased bacterial growth, but ventilation could reduce the degree of this increase.


Subject(s)
Respiration , Ventilation , Humidity , Temperature , Bacteria/genetics
5.
Front Neurol ; 13: 893401, 2022.
Article in English | MEDLINE | ID: mdl-35812109

ABSTRACT

Background: Abdominal obesity and adipocytokines are closely related to atherosclerosis, and adiponectin level is considered one of the important clinical indicators. This study aimed to analyze the associations of abdominal visceral fat content and adiponectin level with intracranial atherosclerotic stenosis (ICAS). Methods: A total of 186 patients were enrolled in this study. Patients were distributed into ICAS and non-ICAS by the degree of artery stenosis. Plasma adiponectin levels and the ratio of visceral adipose tissue (VAT) to subcutaneous adipose tissue (SAT) were measured. The related factors of intracranial atherosclerotic stenosis were determined using multivariable logistic regression analysis. Results: The VAT/SAT ratio (OR, 26.08; 95% CI, 5.92-114.83; p < 0.001) and adiponectin (OR, 0.61; 95% CI, 0.44-0.84; p = 0.002) were found to be the independent predictors of ICAS in a multivariable logistic regression analysis. The prevalence of ICAS increased (T1: 27.4%; T2: 50.0%; T3: 75.8%) as the VAT/SAT ratio tertile increased (p < 0.001). The prevalence of ICAS decreased (T1: 72.6%; T2: 54.8%; T3: 25.8%) as the adiponectin tertile increased (p < 0.001). In ROC curves analysis, VAT/SAT ratio had a sensible accuracy for the prediction of ICAS. The optimal cut-off value of VAT/SAT ratio to predict ICAS in this study was 1.04 (AUC: 0.747; p < 0.001; sensitivity: 67.4%; specificity: 74.7%). The optimal adiponectin cutoff was 3.03 ug/ml (AUC: 0.716; p < 0.001; sensitivity:75.8%; specificity: 61.5%). Conclusion: Higher VAT/SAT ratio and lower plasma adiponectin levels were closely related to the increased risk of intracranial atherosclerotic stenosis.

6.
Biotechnol Appl Biochem ; 69(2): 726-734, 2022 Apr.
Article in English | MEDLINE | ID: mdl-33687113

ABSTRACT

Alzheimer's disease is one of the neurodegenerative disorders caused by neuronal degeneration and apoptosis in brain. Bacoside A and B isolated from the Bacopa monniera plant are responsible for cognitive effects. These compounds repair damaged neurons by promoting activity of kinases, synaptic activity restoration, and improvement of nerve transmission. The present study explored the effect of bacoside-A3 on ß-amyloid-induced reduction of U87MG cell viability, generation of oxidative radicals, and activation of nuclear factor-κB. The U87MG cells were stimulated with ß-amyloid (10 µM) after 24 h of bacoside-A3 pretreatment or without pretreatment to induce characteristics of Alzheimer disease in vitro. Sulforhodamine B (SRB) assay was used to count viable cells and ELISA kit for analysis of PGE2 secretion. The pretreatment with bacoside-A3 prevented ß-amyloid-mediated suppression of U87MG cell proliferation. Pretreatment of U87MG cells with bacoside-A3 prior to ß-amyloid stimulation suppressed generation of ROS in a concentration-based manner. The ß-amyloid-mediated formation of iNOS in U87MG cells was suppressed by bacoside-A3 in a dose-based manner. The ß-amyloid-mediated PGE2 secretion was suppressed by bacoside-A3 pretreatment in U87MG cells in the dose-based manner. The overexpression of COX-2 by ß-amyloid stimulation was suppressed in bacoside-A pretreated cells in the dose-based manner. The bacoside-A3 pretreatment prevented nuclear translocation of NF-κB in U87MG cells in the dose-based manner. In summary, bacoside-A3 prevented ß-amyloid-mediated suppression of U87MG cell viability, inhibited generation of oxidative radicals, PGE2, and synthesis of iNOS. Therefore, bacoside-A3 has therapeutic potential for Alzheimer disease and further in vivo studies need to be performed.


Subject(s)
Alzheimer Disease , Amyloid beta-Peptides , Saponins/pharmacology , Triterpenes/pharmacology , Alzheimer Disease/drug therapy , Amyloid beta-Peptides/pharmacology , Apoptosis , Dinoprostone/pharmacology , Dinoprostone/therapeutic use , Down-Regulation , Humans , NF-kappa B/metabolism , Neurons
7.
Acta Pharmacol Sin ; 42(11): 1860-1874, 2021 11.
Article in English | MEDLINE | ID: mdl-34363007

ABSTRACT

Glioblastoma multiforme (GBM) is the most common and malignant type of primary brain tumor, and 95% of patients die within 2 years after diagnosis. In this study, aiming to overcome chemoresistance to the first-line drug temozolomide (TMZ), we carried out research to discover a novel alternative drug targeting the oncogenic NFAT signaling pathway for GBM therapy. To accelerate the drug's clinical application, we took advantage of a drug repurposing strategy to identify novel NFAT signaling pathway inhibitors. After screening a set of 93 FDA-approved drugs with simple structures, we identified pimavanserin tartrate (PIM), an effective 5-HT2A receptor inverse agonist used for the treatment of Parkinson's disease-associated psychiatric symptoms, as having the most potent inhibitory activity against the NFAT signaling pathway. Further study revealed that PIM suppressed STIM1 puncta formation to inhibit store-operated calcium entry (SOCE) and subsequent NFAT activity. In cellula, PIM significantly suppressed the proliferation, migration, division, and motility of U87 glioblastoma cells, induced G1/S phase arrest and promoted apoptosis. In vivo, the growth of subcutaneous and orthotopic glioblastoma xenografts was markedly suppressed by PIM. Unbiased omics studies revealed the novel molecular mechanism of PIM's antitumor activity, which included suppression of the ATR/CDK2/E2F axis, MYC, and AuroraA/B signaling. Interestingly, the genes upregulated by PIM were largely associated with cholesterol homeostasis, which may contribute to PIM's side effects and should be given more attention. Our study identified store-operated calcium channels as novel targets of PIM and was the first to systematically highlight the therapeutic potential of pimavanserin tartrate for glioblastoma.


Subject(s)
Brain Neoplasms/metabolism , Calcineurin Inhibitors/pharmacology , Calcium Signaling/drug effects , Glioblastoma/metabolism , NFATC Transcription Factors/metabolism , Piperidines/pharmacology , Urea/analogs & derivatives , Animals , Brain Neoplasms/drug therapy , Calcineurin/metabolism , Calcineurin Inhibitors/therapeutic use , Calcium Signaling/physiology , Calcium-Binding Proteins/antagonists & inhibitors , Calcium-Binding Proteins/metabolism , Cell Line, Tumor , Cell Movement/drug effects , Cell Movement/physiology , Dose-Response Relationship, Drug , Female , Glioblastoma/drug therapy , HeLa Cells , Humans , Male , Membrane Proteins/antagonists & inhibitors , Membrane Proteins/metabolism , Mice , Mice, Inbred BALB C , Mice, Nude , NFATC Transcription Factors/antagonists & inhibitors , Piperidines/therapeutic use , Urea/pharmacology , Urea/therapeutic use , Xenograft Model Antitumor Assays/methods
8.
Redox Biol ; 46: 102084, 2021 10.
Article in English | MEDLINE | ID: mdl-34364219

ABSTRACT

Diabetes mellitus (DM) promotes neointimal hyperplasia, characterized by dysregulated proliferation and accumulation of vascular smooth muscle cells (VSMCs), leading to occlusive disorders, such as atherosclerosis and stenosis. Poly (ADP-ribose) polymerase 1 (PARP1), reported as a crucial mediator in tumor proliferation and transformation, has a pivotal role in DM. Nonetheless, the function and potential mechanism of PARP1 in diabetic neointimal hyperplasia remain unclear. In this study, we constructed PARP1 conventional knockout (PARP1-/-) mice, and ligation of the left common carotid artery was performed to induce neointimal hyperplasia in Type I diabetes mellitus (T1DM) mouse models. PARP1 expression in the aorta arteries of T1DM mice increased significantly and genetic deletion of PARP1 showed an inhibitory effect on the neointimal hyperplasia. Furthermore, our results revealed that PARP1 enhanced diabetic neointimal hyperplasia via downregulating tissue factor pathway inhibitor (TFPI2), a suppressor of vascular smooth muscle cell proliferation and migration, in which PARP1 acts as a negative transcription factor augmenting TFPI2 promoter DNA methylation. In conclusion, these results suggested that PARP1 accelerates the process of hyperglycemia-induced neointimal hyperplasia via promoting VSMCs proliferation and migration in a TFPI2 dependent manner.


Subject(s)
Carotid Artery Injuries , Diabetes Mellitus, Experimental , Hyperglycemia , Animals , Carotid Artery Injuries/pathology , Cell Movement , Cell Proliferation , Cells, Cultured , Diabetes Mellitus, Experimental/genetics , Diabetes Mellitus, Experimental/pathology , Disease Models, Animal , Hyperglycemia/genetics , Hyperglycemia/pathology , Hyperplasia/pathology , Lipoproteins , Mice , Muscle, Smooth, Vascular/pathology , Myocytes, Smooth Muscle/pathology
9.
J Mol Cell Cardiol ; 161: 39-52, 2021 12.
Article in English | MEDLINE | ID: mdl-34343541

ABSTRACT

Calcification is common in atherosclerotic plaque and can induce vulnerability, which further leads to myocardial infarction, plaque rupture and stroke. The mechanisms of atherosclerotic calcification are poorly characterized. Interleukin enhancer binding factor 3 (ILF3) has been identified as a novel factor affecting dyslipidemia and stroke subtypes. However, the precise role of ILF3 in atherosclerotic calcification remains unclear. In this study, we used smooth muscle-conditional ILF3 knockout (ILF3SM-KO) and transgenic mice (ILF3SM-Tg) and macrophage-conditional ILF3 knockout (ILF3M-KO) and transgenic (ILF3M-Tg) mice respectively. Here we showed that ILF3 expression is increased in calcified human aortic vascular smooth muscle cells (HAVSMCs) and calcified atherosclerotic plaque in humans and mice. We then found that hyperlipidemia increases ILF3 expression and exacerbates calcification of VSMCs and macrophages by regulating bone morphogenetic protein 2 (BMP2) and signal transducer and activator of transcription 1 (STAT1) transcription. We further explored the molecular mechanisms of ILF3 in atherosclerotic calcification and revealed that ILF3 acts on the promoter regions of BMP2 and STAT1 and mediates BMP2 upregulation and STAT1 downregulation, which promotes atherosclerotic calcification. Our results demonstrate the effect of ILF3 in atherosclerotic calcification. Inhibition of ILF3 may be a useful therapy for preventing and even reversing atherosclerotic calcification.


Subject(s)
Arteriolosclerosis/etiology , Bone Morphogenetic Protein 2/genetics , Hyperlipidemias/physiopathology , Nuclear Factor 90 Proteins/metabolism , STAT1 Transcription Factor/genetics , Animals , Body Weight , Bone Morphogenetic Protein 2/metabolism , Gene Expression Regulation , Humans , Hyperlipidemias/genetics , Hyperlipidemias/metabolism , Mice, Inbred C57BL , Mice, Knockout , Mice, Transgenic , Muscle, Smooth, Vascular/metabolism , Muscle, Smooth, Vascular/pathology , Nuclear Factor 90 Proteins/genetics , Promoter Regions, Genetic , STAT1 Transcription Factor/metabolism , Vascular Calcification/genetics , Vascular Calcification/metabolism , Vascular Calcification/physiopathology
10.
Transl Pediatr ; 10(6): 1701-1711, 2021 Jun.
Article in English | MEDLINE | ID: mdl-34295785

ABSTRACT

BACKGROUND: The aim of this study was to investigate the mechanism of Modified Ginseng-Schisandra Decoction in the treatment of recurrent respiratory tract infection (RRTI) using network pharmacology. METHODS: To screen the active ingredients of A Modified Ginseng-Schisandra Decoction, TCMSP, TCMID, Batman-TCM and PubChem database were applied. To predict the targets of active ingredients on RRTI, TCMSP, Pubmed, OMIM, Drug Bank, GAD and TTD database were used. The compounds-therapeutic target network was constructed with Cytoscape 3.7.2 software. The STRING database was used to construct a protein-protein interaction (PPI) network, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis was used to identify potential signal pathways. RESULTS: The 3 main active ingredients of Modified Ginseng-Schisandra Decoction obtained by screening were quercetin, kaempferol, and isoflavone; the main therapeutic targets were PTGS2, ESR1, AR, PPARG, NOS2, and others. Based on the PPI network, we found that the targets of Modified Ginseng-Schisandra Decoction were significantly enriched in (FDR <0.01) cancer pathway, tumor necrosis factor (TNF) signaling pathway, hypoxia-inducible factor (HIF-1) signaling pathway, and others. CONCLUSIONS: Modified Ginseng-Schisandra Decoction can treat RRTI primarily through acting in the signal transduction of some key nodes of cancer pathway and TNF pathway. It exerts a direct or indirect influence on multiple signaling pathways, and has the characteristics of multicomponent, multitarget, and multichannel action.

11.
Transl Pediatr ; 10(6): 1692-1700, 2021 Jun.
Article in English | MEDLINE | ID: mdl-34295784

ABSTRACT

BACKGROUND: Recurrent respiratory tract infection (RRTI) is common disease in childhood, and the incidence rate is increasing in China. The cause is complex, which is related to the physiological characteristics of children's respiratory system and the immature immune function, lack of trace elements and environmental pollution. Immunomodulators and antibiotics are often used to treat RRTI, but the clinical efficacy still needs to be improved. Chinese medicine has unique advantages in the treatment of RRTI. In the clinical treatment of RRTI, the authors often use modified Ginseng-Schisandra decoction (MGSD). In order to study the clinical effect of MGSD on serum trace elements and immune function in children with spleen deficiency syndrome after RRTI, we conducted this clinical observation. METHODS: This is a single-center randomized trial with two parallel groups. Eighty children who developed spleen deficiency syndrome following RRTI were randomly and equally divided into a control group and an observation group. The control group was given Medilac-vita and the observation group was given MGSD. The participants, care givers, and those assessing the outcomes were blinded to group assignment. The treatment course was 4 weeks. Clinical efficacy, traditional Chinese medicine (TCM) syndrome scores, humoral immunity, and trace element index values before and after treatment were compared between the two groups of children. RESULTS: The trial was finished. The total effective rate of the observation group (n=40, 95%) was significantly higher than control group (n=40, 65%) (P<0.05). After treatment, the TCM syndrome scores of the two groups were reduced compared to those before treatment, while the serum immunoglobulin A and G levels were increased (P<0.05); however, the observation group had significantly lower TCM syndrome scores than the control group. Significant improvements in serum immunoglobulins (IgA and IgG) levels, T lymphocyte subsets (CD3+, CD4+, and CD4+/CD8+), and trace elements (Zn and Fe) indicators were observed in the observation group compared to the control group (P<0.05). CONCLUSIONS: The application of MGSD in the treatment of children with spleen deficiency syndrome after RRTI has a definite clinical effect. MGSD can effectively improve the immune function of the patients and the content of the trace elements iron and zinc, and thus has potential value for promotion and application. TRIAL REGISTRATION: Chinese Clinical Trial Registry ChiCTR2100047128.

12.
Neoplasma ; 68(4): 780-787, 2021 Jul.
Article in English | MEDLINE | ID: mdl-34034499

ABSTRACT

circRNAs have been considered as a rising factor in cancers. However, the roles and mechanisms of circ-sirt1 in gastric cancer (GC) remain largely unknown. In this study, we found that the expressions of sirt1 and circ-sirt1 are decreased in tissues or serums of GC patients by real-time quantitative PCR (RT-qPCR). The expressions of miR-132-3p/miR-212-3p showed an opposite tendency in these samples. The co-transfection of miR-132-3p/miR-212-3p mimics counteracted the enhancement of sirt1 expression induced by circ-sirt1. The results of cell colony-formation assay and transwell assays demonstrated that the proliferation, migration, and invasion activities of BGC-823 cells were inhibited by circ-sirt1 overexpression or miR-132-3p/miR-212-3p knockdown, respectively. The xenograft tumor model result indicated that the circ-sirt1 overexpression suppressed the tumor growth of BGC-823 cells. The regulation of miR-132-3p/miR-212-3p between circ-sirt1 and sirt1 was verified in the mice tumor tissues. Thus, circ-sirt1 inhibited tumor growth and invasion probably by sponging miR-132-3p/miR-212-3p and upregulating sirt1 expression in GC. These findings may provide a theoretical basis for the classification of GC and a novel therapeutic target for GC patients.


Subject(s)
MicroRNAs , Stomach Neoplasms , Animals , Cell Line, Tumor , Cell Proliferation , Humans , Mice , MicroRNAs/genetics , Sirtuin 1/genetics , Stomach Neoplasms/genetics
13.
J Thorac Oncol ; 16(7): 1136-1148, 2021 07.
Article in English | MEDLINE | ID: mdl-33722707

ABSTRACT

INTRODUCTION: Metastasis is the primary cause of lung cancer-related death. Nevertheless, the underlying molecular mechanisms and evolutionary patterns of lung cancer metastases are still elusive. METHODS: We performed whole-exome sequencing for 40 primary tumors (PTs) and 61 metastases from 47 patients with lung cancer, of which 40 patients had paired PTs and metastases. The PT-metastasis genomic divergence, metastatic drivers, timing of metastatic dissemination, and evolutionary origins were analyzed using appropriate statistical tools and mathematical models. RESULTS: There were various degrees of genomic heterogeneity when comparing the paired primary and metastatic lesions or comparing metastases of different sites. Multiple metastasis-selected/enriched genetic alterations were found, such as MYC amplification, NKX2-1 amplification, RICTOR amplification, arm 20p gain, and arm 11p loss, and these results were were also featured in a meta-analysis cross-validated using an independent cohort from Memorial Sloan-Kettering Cancer Center database. To elucidate the metastatic seeding time, we applied a metastatic model and found 61.1% of the tumors were late dissemination, in which the metastatic seeding happened approximately 2.74 years before clinical detection. One exception was lymph node metastases whose dissemination time was relatively early. By analyzing the evolutionary origins, we reported that nonlymph node metastases were mainly seeded by the PT (87.5%) rather than the earlier colonized lymph node metastases. CONCLUSIONS: Our results shed light on the molecular features that potentially drive lung cancer metastases. The distinct temporospatial pattern of disease progression revealed that lung cancer was susceptible to either late dissemination or indolent early lymph node metastases, leaving a potential time window to minimize metastases by early cancer detection.


Subject(s)
Lung Neoplasms , Cohort Studies , Humans , Lung Neoplasms/genetics , Lymphatic Metastasis , Mutation , Neoplasm Metastasis , Exome Sequencing
15.
Nat Plants ; 7(1): 73-86, 2021 01.
Article in English | MEDLINE | ID: mdl-33452487

ABSTRACT

Symbiosis between soybean (Glycine max) and rhizobia is essential for efficient nitrogen fixation. Rhizobial effectors secreted through the type-III secretion system are key for mediating the interactions between plants and rhizobia, but the molecular mechanism remains largely unknown. Here, our genome-wide association study for nodule number identified G. max Nodule Number Locus 1 (GmNNL1), which encodes a new R protein. GmNNL1 directly interacts with the nodulation outer protein P (NopP) effector from Bradyrhizobium USDA110 to trigger immunity and inhibit nodulation through root hair infection. The insertion of a 179 bp short interspersed nuclear element (SINE)-like transposon into GmNNL1 leads to the loss of function of GmNNL1, enabling bradyrhizobia to successfully nodulate soybeans through the root hair infection route and enhancing nitrogen fixation. Our findings provide important insights into the coevolution of soybean-bradyrhizobia compatibility and offer a way to design new legume-rhizobia interactions for efficient symbiotic nitrogen fixation.


Subject(s)
Bradyrhizobium/metabolism , Glycine max/physiology , Plant Proteins/physiology , Plant Roots/microbiology , Symbiosis/physiology , Bradyrhizobium/physiology , Genome-Wide Association Study , Haplotypes/genetics , Nitrogen Fixation , Plant Proteins/genetics , Plant Roots/physiology , Polymorphism, Single Nucleotide/genetics , Root Nodules, Plant/microbiology , Root Nodules, Plant/physiology , Glycine max/genetics , Glycine max/microbiology , Whole Genome Sequencing
16.
Indoor Air ; 31(2): 440-453, 2021 03.
Article in English | MEDLINE | ID: mdl-32979003

ABSTRACT

This study comprehensively investigated the impact of indoor carbon dioxide (CO2 ) concentration on sleep quality. Three experimental conditions (800, 1900, 3000 ppm) were created in chambers decorated as bedroom and other environmental parameters that may influence the sleep quality were under strict control. Sleep quality of 12 subjects (6 men and 6 women) was monitored for 54 consecutive days through sleep quality questionnaire and physiological measures. Both subjective and physiological results showed that sleep quality decreased significantly with the increase of CO2 concentration, and the comprehensive questionnaire score at 3000 ppm was only 80.8% of that at 800 ppm. A linear positive correlation was found between sleep onset latency (SOL) and CO2 concentration, while a linear negative correlation occurred between slow-wave sleep (SWS) and CO2 concentration. In addition, in the same sleep environment, men had higher subjective questionnaire scores after wake-up, longer SWS and shorter SOL, which lead to a better sleep quality compared with women, and there was a significant gender difference in sleep quality at 800 ppm (P < .05).


Subject(s)
Air Pollution, Indoor/analysis , Carbon Dioxide/analysis , Sleep/physiology , Adult , Female , Humans , Male
17.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-906443

ABSTRACT

Objective:To explore the targets and relevant signaling pathways of Suoquanwan in the treatment of enuresis using network pharmacology,and animal expriments are applied to further define its mechanism of action. Method:Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP) database was used to screen out active chemical components of Suoquanwan,varieties of systematic biological databases were integrated to construct the "active component-disease-target" network relationship,and the common protein protein interaction network(PPI) network genes were functionally enriched. Quantitative real time polymerase chain reaction(Real-time PCR) and Western blot were used to verify the effect of Suoquanwan on AVPR2 and DRD2 gene. Result:A total of 32 active ingredients were screened from Suoquanwan. These active ingredients were interacted with 131 potential targets relating to Enuresis,which contained 14 core target genes,namely arginine vasopressin receptor 2 (AVPR2), neurotrophic receptor tyrosine kinase 1(NTRK1), dopamine receptor D2(DRD2), opioid receptor mu 1(OPRM1), 5-hydroxytryptamine receptor 1A(HTR1A), 5-hydroxytryptamine receptor 1B(HTR1B),solute carrier family 6 member 4(SLC6A4),Adrenoceptor Alpha 2A(ADRA2A), prostaglandin-endoperoxide synthase 2(PTGS2), cholinergic receptor muscarinic 2(CHRM2), solute carrier family 6 member 3 (SLC6A3), 5-hydroxytryptamine receptor 6(HTR6), solute carrier family 6 member 2(SLC6A2), cytochrome P450 family 2 subfamily C member 19(CYP2C19). Gene enrichments mainly involved to G protein-coupled receptor signaling pathway,regulation of trans-synaptic signaling,regulation of neurotransmitter transport and neuroactive ligand-receptor interaction. Real-time PCR and Western blot results showed that Suoquanwan could enhance the expression of AVPR2 in rat kidney,and weaken the expression of DRD2 in rat adrenal. Conclusion:The main chemical constituents in Suoquanwan may alleviate enuresis by regulating AVPR2 and DRD2 and then participating in the G protein-coupled receptor signaling pathway,regulation of trans-synaptic signaling,regulation of neurotransmitter transport and other biological processes.

18.
Huan Jing Ke Xue ; 41(11): 4999-5007, 2020 Nov 08.
Article in Chinese | MEDLINE | ID: mdl-33124243

ABSTRACT

Microplastics (MPs, particle size<5 mm), as a new pollutant, have attracted wide attention in recent years. The distributions of MPs in effluent of a sewage treatment plant (STP) were examined. Surface water, sediment, and freshwater organism samples were taken from the STP discharge outlet in the Lijiang River tributary (S1), the confluence of tributaries and main streams in the Lijiang River (S2), and downstream locations in the Lijiang River (S3). The impact of STP discharge effluent on the characteristics and spatial distribution of MPs pollution in freshwater organisms was studied. The results showed that the freshwater organisms had a probability of uptake of MPs by 94.2%. The mean abundance of MPs in S1 (2.7 n·ind-1) was significantly higher than that of S3 (1.9 n·ind-1, P<0.05). The MPs found in S1 and S3 were mainly <0.10 mm, accounting for 46.0% and 30.5%, respectively. The fiber type of MPs was observed in the body of freshwater organisms. Polyethylene terephthalate was the major polymer form in S1 organisms, while polypropylene was the major polymer form in S3. The effluent discharged from the STP led to the accumulation of MPs in freshwater organisms.


Subject(s)
Plastics , Water Pollutants, Chemical , Environmental Monitoring , Fresh Water , Microplastics , Sewage , Water Pollutants, Chemical/analysis
19.
World J Clin Cases ; 8(3): 630-637, 2020 Feb 06.
Article in English | MEDLINE | ID: mdl-32110676

ABSTRACT

BACKGROUND: The 2018 American Heart Association/American Stroke Association guidelines for early management of acute ischemic stroke recommend the use of retrievable stents for mechanical thrombectomy in patients with acute internal carotid artery or middle cerebral artery M1 occlusion that can be treated within 6 h from onset. For cases of carotid artery with ipsilateral middle cerebral artery tandem embolization, the operation is more complicated and challenging. We here report a case of a tandem embolism, and the anatomy of the aortic arch was complex. Direct carotid artery incision and thrombectomy can not only prevent the escape of the carotid embolus but also save time during establishment of the thrombectomy access. CASE SUMMARY: The patient was a 70-year-old man. He was admitted to hospital due to sudden inability to speak and inability to move his right limb for 3 h. Imaging confirmed a diagnosis of a tandem embolism in the left carotid artery with left M1 occlusion. Carotid artery incision thrombectomy combined with stent thrombectomy was performed. The operation was successful, and 24 h later the patient was conscious and mentally competent but had motor aphasia. His bilateral limb muscle strength level was 5, and his neurologic severity scores score was 2. CONCLUSION: Carotid artery incision thrombectomy combined with stenting for carotid artery plus cerebral artery tandem embolization is clinically feasible. For patients with a complicated aortic arch and an extremely tortuous carotid artery, carotid artery incision can be chosen to establish the interventional path.

20.
Indoor Air ; 30(2): 198-212, 2020 03.
Article in English | MEDLINE | ID: mdl-31845405

ABSTRACT

This paper reviews the published literature on indoor thermal environment and air quality in Chinese-style residential kitchens (CRKs). The paper first discusses typical characteristics of CRKs, including kitchen layout, cooking methods, and ventilation systems used. Next, the paper describes the current state of the indoor thermal environment and air quality in CRKs. Finally, this paper summarizes measures to control and improve the environment inside CRKs. The results indicate that the indoor environment of CRKs is too hot in summer and exhibits a large vertical temperature difference. No appropriate model was available for accurately evaluating the thermal environment in CRKs. At the same time, CRKs are highly polluted by COx, NOx, TVOC, and particulate matter (PM). Although existing exhaust hoods could improve the indoor environment to some extent, the use of a combined exhaust, make-up air, and air-conditioning system should be considered to provide a comfortable and healthy environment in CRKs.


Subject(s)
Air Pollution, Indoor/analysis , Cooking , Environmental Monitoring , Temperature , Air Conditioning , Air Pollutants , Air Pollution/analysis , Air Pollution/statistics & numerical data , Air Pollution, Indoor/statistics & numerical data , China , Housing , Humans , Particulate Matter/analysis , Ventilation
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