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We report herein the development of palladium-catalyzed deacylative deuteration of arylketone oxime ethers. This protocol features excellent functional group tolerance, heterocyclic compatibility, and high deuterium incorporation levels. Regioselective deuteration of some biologically important drugs and natural products are showcased via Friedel-Crafts acylation and subsequent deacylative deuteration. Vicinal meta-C-H bond functionalization (including fluorination, arylation, and alkylation) and para-C-H bond deuteration of electro-rich arenes are realized by using the ketone as both directing group and leaving group, which is distinct from aryl halide in conventional dehalogenative deuteration.
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Based on the ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS) technology, the components of Daqinglong Decoction absorbed in serum were analyzed and identified, and the therapeutic material basis of the prescription was revealed via network pharmacology. UPLC conditions are as follows: Waters Acquity UPLC BEH C_(18) column(2.1 mm × 100 mm, 1.7 µm), mobile phase of 0.1% formic acid aqueous solution(A)-0.1% formic acid in acetonitrile(B), gradient elution. Peakview 2.0 and MetabolitePilot 1.5 were employed for the comparison of Daqinglong Decoction, blank serum, and serum after the administration of the decoction, and the components of Daqinglong Decoction absorbed in serum were analyzed based on MS/MS profiles in related database and literature. The targets of the components absorbed in serum were retrieved from SwissTargetPrediction, DrugBank, and Batman-TCM. With the search terms of common cold, influenza, flu, bronchitis, bronchiolitis, asthma, allergic rhinitis, rhinallergosis, allergic coryza, rheumatic arthritis, and nephritis, the related disease targets were screened out. Then the absorbed component-potential target gene network and absorbed component target-disease target network were constructed, followed by Gene Ontology(GO) term enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment analysis of the core targets. iGEMDOCK was employed for molecular docking of the absorbed components and core targets. In the serum after the administration of the decoction, 28 components were preliminarily identified, with 21 prototypes and 7 metabolites. Among them, 5 core components of ephedrine, demethylephedrine, glycyrrhetinic acid, p-hydroxybenzoic acid, and 2-methoxybenzoic acid were screened out, and 9 core targets, such as JUN, tumor protein 53(TP53), and protein kinase B(AKT1), were identified. Molecular docking showed high binding affinity of core components and core targets. Therefore, Daqinglong Decoction may exert therapeutic effect by regulating mitogen-activated protein kinase(MAPK), cyclic adenosine monophosphate(cAMP), and cyclic guanosine monophosphate(cGMP)-protein kinase G(PKG) signaling pathways and further improving and regulating inflammatory response and other physiological and pathological processes. This study clarifies the components of Daqinglong Decoction absorbed in serum and explores the therapeutic material basis of the prescription, which provides a reference for further elucidating the mechanism of Daqinglong Decoction and its clinical application.
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Medicamentos de Ervas Chinesas , Espectrometria de Massas em Tandem , Cromatografia Líquida de Alta Pressão , Medicamentos de Ervas Chinesas/análise , Medicamentos de Ervas Chinesas/farmacologia , Simulação de Acoplamento Molecular , Farmacologia em RedeRESUMO
BACKGROUND: Immune cell infiltration and neuroinflammation are heavily associated with spinal cord injury (SCI). C-C motif chemokine ligand 2/C-C chemokine receptor type 2 (CCL2/CCR2) axis has been identified as a critical role player during the invasion of immune cells to lesions in many diseases. γδ T cells, a subgroup of T cells, manage the course of inflammation response in various diseases; however, it remains unknown whether γδ T cells are recruited to injury site through CCL2/CCR2 signaling and exert the regulation effect on neuroinflammation after SCI. METHODS: Basso Mouse Scale (BMS), regularity index, cadence, max contact area, and motor-evoked potential testing (MEP) were measured to determine the neurological function recovery after spinal cord injury. Nissl staining was performed to identify the number of surviving motor neurons at lesion epicenter. Immunofluorescence, Western blot, enzyme-linked immunosorbent assays (ELISA), and quantitative real-time polymerase chain reaction (QRT-PCR) also were employed to evaluate the expression of associated proteins and genes. RESULTS: In this study, we demonstrated that TCRδ-/- mice present improved neurological recovery after SCI. γδ T cell recruitment to the SCI site was significantly reduced and motor functional improvement enhanced in CCL2-/- and CCR2-/- mouse strains. Furthermore, reconstitution of TCRδ-/- mice with γδ T cells extracted from CCR2-/- mice also showed similar results to CCL2 and CCR2 deficient mice. CONCLUSIONS: In conclusion, γδ T cell recruitment to SCI site promotes inflammatory response and exacerbates neurological impairment. CCL2/CCR2 signaling is a vital recruitment mechanism of γδ T cells to the SCI site, and it may be taken as a novel therapeutic target for future SCI.
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Quimiocina CCL2/imunologia , Receptores CCR2/imunologia , Transdução de Sinais/imunologia , Traumatismos da Medula Espinal/imunologia , Linfócitos T/imunologia , Animais , Quimiocina CCL2/metabolismo , Quimiotaxia de Leucócito/imunologia , Humanos , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Receptores de Antígenos de Linfócitos T gama-delta/imunologia , Receptores CCR2/metabolismo , Traumatismos da Medula Espinal/patologia , Linfócitos T/metabolismoRESUMO
Both posterior decompression and fusion (PDF) and laminoplasty (LAMP) have been used to treat cervical myelopathy due to multilevel ossification of posterior longitudinal ligament (OPLL). However, considerable controversy exists over the choice of the two surgical strategies. Thus, the aim of this study is to compare clinical outcomes of PDF and LAMP for treatment of cervical myelopathy due to multilevel OPLL. We searched PubMed, EMBASE and Cochrane Central Register of Controlled Trials database to identify relevant clinical studies compared with clinical outcomes of PDF and LAMP for cervical OPLL. The primary outcomes including Japanese Orthopaedic Association (JOA) score and recovery rate of JOA were evaluated, and the secondary outcomes involving visual analogue scale (VAS), cervical curvature, OPLL progression rate, complication rate, reoperation rate and surgical trauma were also evaluated using Stata software. A total of nine studies were included in the current study, involving 324 patients. The current study suggests that compared with LAMP, PDF achieves a lower OPLL progression rate, better postoperative cervical curvature and similar neurological improvement in the treatment of multilevel cervical OPLL. However, PDF has a higher complication rate, more surgical trauma and higher postoperative VAS than LAMP.
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Vértebras Cervicais/cirurgia , Descompressão Cirúrgica/tendências , Laminoplastia/tendências , Ossificação do Ligamento Longitudinal Posterior/cirurgia , Complicações Pós-Operatórias/etiologia , Fusão Vertebral/tendências , Vértebras Cervicais/patologia , Descompressão Cirúrgica/efeitos adversos , Humanos , Laminoplastia/efeitos adversos , Ossificação do Ligamento Longitudinal Posterior/diagnóstico , Medição da Dor/métodos , Medição da Dor/tendências , Complicações Pós-Operatórias/diagnóstico , Reoperação/tendências , Estudos Retrospectivos , Fusão Vertebral/efeitos adversos , Resultado do TratamentoRESUMO
In this experiment, ultra high performance liquid chromatography-quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS) was used to analyze and identify chemical constituents of Ginseng-Douchi(GD) compound fermentation, and explore the conversion rules of ginsenosides and soybean isoflavones after compound fermentation. Waters Acquity UPLC BEH C_(18) column(2.1 mm×100 mm, 1.7 µm) was adopted, with 0.1% formic acid aqueous solution(A)-0.1% formic acid acetonitrile solution(B) as mobile phase for gradient elution; electrospray ion source(ESI) was used to collect data in positive and negative ion modes; according to the exact mass number, the secondary spectrum comparison of the database and the existing literature reports, Peakview 2.0/masterview 1.0 software was used to determine the common ion structure formula. Finally, a total of 133 chemical constituents were analyzed and identified from the GD. Ginseng saponins and isoflavone glycosides were significantly converted after fermentation. Among them, peak areas of prototype ginsenosides Rk_3, Rh_1, Rh_2, Rh_3, daidzin, glycitin and genistin decreased significantly; whereas peak areas of se-condary ginsenoside Rb_1, Rb_2, Rk_1, glycitein, genistein and daidzein increased significantly. In this experiment, liquid-mass spectrometry technique was used to investigate the conversion of active ingredients of GD compound fermented products after co-fermentation, so as to provide a scientific basis for elucidating pharmacodynamics material basis and quality control.
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Medicamentos de Ervas Chinesas , Panax , Cromatografia Líquida de Alta Pressão , Fermentação , Espectrometria de Massas em TandemRESUMO
Due to the existence of multiple rotating parts in the planetary gearbox-such as the sun gear, planet gears, planet carriers, and its unique planetary motion, etc.-the vibration signals generated under multiple fault conditions are time-varying and nonstable, thus making fault diagnosis difficult. In order to solve the problem of planetary gearbox composite fault diagnosis, an improved particle swarm optimization variational mode decomposition (IPVMD) and improved convolutional neural network (I-CNN) are proposed. The method takes as input the spectrum of the original vibration signal that contains rich information. First, the automatic feature extraction of signal spectrum is performed by I-CNN, while a classifier is used to diagnose the fault modes. Second, the composite fault signal is decomposed into multiple single fault signals by adaptive variational mode, and the signal is decomposed as a model input to diagnose the single fault component. Finally, a complete intelligent diagnosis of planetary gearboxes is conducted. Through experimental verification, the composite fault diagnosis method combining IPVMD and I-CNN will diagnose the composite fault and effectively diagnose the sub-fault included in the composite fault.
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To analyze the dynamic changes in components in exocarp of Juglans mandshurica at different browning periods. Twenty-six batches of exocarp of J. mandshurica samples from thirteen browning periods were assessed by UPLC-Q-TOF-MS/MS. The formula of different compounds were determined by accurate mass and isotopic abundance ratio from target screening function of Peakview 2.0/masterview1.0 software. Then their structures were determined by analysis of MS/MS fragment or comparison with standard substances and references. The contents of chemical components were changed significantly in different browning periods and twenty five compounds were identified or inferred. Of the 13 naphthoquinone compounds, the contents of 6 compounds with similar parent nucleus as juglone and 3 naphthoquinone glycosides compounds were decreased significantly, and 4 naphthoquinone derivatives such as regiolone were produced; the contents of four flavones and two phenolic acids compounds were decreased significantly; and the contents of 6 diarylheptanoids compounds were increased significantly. UPLC-Q-TOF/MS method can be used to identify and analyze the chemical constituents from exocarp of J. mandshurica rapidly and accurately, and analyze the rules of dynamic changes, to reveal the browning of Chinese medicinal materials and its effects on compositions of fruits and vegetables.
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Frutas/química , Juglans/química , Cromatografia Líquida de Alta Pressão , Medicamentos de Ervas Chinesas/química , Flavonas/análise , Glicosídeos/análise , Hidroxibenzoatos/análise , Naftoquinonas/análise , Oxirredução , Espectrometria de Massas em TandemRESUMO
The changes in effective components of Juglans mandshurica at different harvest periods were analyzed by UPLC-Q-TOF-MS/MS. Eighteen batch samples of J. mandshurica from six harvest periods were assessed by multivariate statistical analysis with Markerview software. The formula of different compounds were determined by accurate mass and isotopic abundance ratio from target screening function of Peakview 2.0/Masterview1.0 software. Then their structure were determined by analysis of MS/MS fragment or comparison with standard substances and references. Naphthoquinone are the major markers in samples of Juglans mandshurica from different harvest periods. Thirty-eight of naphthalenequinones were identified or inferred in J. mandshurica and contents decline gradually. UPLC-Q-TOF-MS method which develops a new strategy can identify and analyze chemical constituents from J. mandshurica rapidly and accurately, main chemical constituents can be used for quality evaluation and efficacy material research. The dynamic changes in the metabolite accumulation of J. mandshurica the basic data for harvesting medicinal plants at different times.
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Frutas/química , Juglans/química , Naftoquinonas/análise , Extratos Vegetais/química , Espectrometria de Massas em Tandem , Fatores de TempoRESUMO
Objective: To analyze the chemical compositions of the leaves from Acanthopanax senticosus. Methods: Rapid identification of chemical constituents in the leaves of Acanthopanax senticosus by UPLC-Q-TOF-MS / MS. The chemical constituents were identified and speculated by using Peakview data processing software, the retention time, exact relative molecular mass, and cleavage fragments of MS / MS were detected. Chromatography-mass spectrometry conditions were as follows, the analysis was performed on Waters BEH C18column( 100 mm × 2. 1 mm,1. 7 µm) in gradient elution with a mobile phase of 0. 1% formic acid aqueous solution and 0. 1%formic acid acetonitrile, the flow rate was at 0. 3 m L / min, the data was collected by the negative and positive ion mode using ESI ion source. Results: 30 compounds were identified and speculated by the standards and compounds of MS / MS, the references and Chemispider database. Conclusion: This method is fast, sensitive and comprehensive with the rapid identification of chemical constituents in the leaves of Acanthopanax senticosus, which will provide the evidences for perfecting the quality standard, and clarify the efficacy material base of the leaves of Acanthopanax senticosus.
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Eleutherococcus , Cromatografia Líquida de Alta Pressão , Medicamentos de Ervas Chinesas , Folhas de Planta , Espectrometria de Massas em TandemRESUMO
OBJECTIVE: To investigate the effect of electronspun PLGA/HAp/Zein scaffolds on the repair of cartilage defects. METHODS: The PLGA/HAp/Zein composite scaffolds were fabricated by electrospinning method. The physiochemical properties and biocompatibility of the scaffolds were separately characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), and fourier transform infrared spectroscopy (FTIR), human umbilical cord mesenchymal stem cells (hUC-MSCs) culture and animal experiments. RESULTS: The prepared PLGA/HAp/Zein scaffolds showed fibrous structure with homogenous distribution. hUC-MSCs could attach to and grow well on PLGA/HAp/Zein scaffolds, and there was no significant difference between cell proliferation on scaffolds and that without scaffolds (P>0.05). The PLGA/HAp/Zein scaffolds possessed excellent ability to promote in vivo cartilage formation. Moreover, there was a large amount of immature chondrocytes and matrix with cartilage lacuna on PLGA/HAp/Zein scaffolds. CONCLUSION: The data suggest that the PLGA/HAp/Zein scaffolds possess good biocompatibility, which are anticipated to be potentially applied in cartilage tissue engineering and reconstruction.
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Desenvolvimento Ósseo/fisiologia , Cartilagem/crescimento & desenvolvimento , Durapatita/química , Ácido Láctico/química , Ácido Poliglicólico/química , Alicerces Teciduais/química , Zeína/química , Animais , Materiais Biocompatíveis , Células Cultivadas , Feminino , Humanos , Masculino , Células-Tronco Mesenquimais/fisiologia , Copolímero de Ácido Poliláctico e Ácido Poliglicólico , Regeneração/fisiologia , Adulto JovemRESUMO
Bone defects can interfere with bone healing by disrupting the local environment, resulting in vascular damage and hypoxia. Under these conditions, insufficient oxygen availability is a significant factor that exacerbates disease by blocking angiogenesis or osteogenesis. Exosomes play a crucial role in intercellular communication and modulation of inflammation to aid bone regeneration. However, the distance between exosomes and areas of damage can hinder efficient bone generation and cell survival. To overcome this limitation, we fabricated a continuous oxygen-supplying composite scaffold, with the encapsulation of calcium peroxide in a polylactic acid three-dimensional (3D) printing construct (CPS), as both an oxygen source and hydroxyapatite (HAP) precursor. Furthermore, bone marrow mesenchymal stem cell (BMSC)-derived exosomes were incorporated into hyaluronic acid (HA) hydrogels to stimulate cell growth and modulate inflammation. The release of exosomes into cells leads to an increase in alkaline phosphatase production. In vivo results demonstrated that the composite scaffold regulated the inflammatory microenvironment, relieved tissue hypoxia, and promoted new bone formation. These results indicate that the synergistic effect of exosomes and oxygen promoted the proliferation of BMSCs, alleviated inflammation and exhibited excellent osteogenic properties. In conclusion, this osteogenic functional composite scaffold material offers a highly effective approach for bone repair.
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Regeneração Óssea , Exossomos , Ácido Hialurônico , Hidrogéis , Células-Tronco Mesenquimais , Osteogênese , Oxigênio , Poliésteres , Impressão Tridimensional , Alicerces Teciduais , Ácido Hialurônico/química , Ácido Hialurônico/farmacologia , Poliésteres/química , Alicerces Teciduais/química , Exossomos/metabolismo , Regeneração Óssea/efeitos dos fármacos , Hidrogéis/química , Hidrogéis/farmacologia , Animais , Células-Tronco Mesenquimais/efeitos dos fármacos , Células-Tronco Mesenquimais/metabolismo , Células-Tronco Mesenquimais/citologia , Osteogênese/efeitos dos fármacos , Engenharia Tecidual/métodos , Proliferação de Células/efeitos dos fármacos , Osso e Ossos/efeitos dos fármacos , Osso e Ossos/metabolismoRESUMO
Spinal cord injury (SCI) can result in irreversible motor and sensory deficits. However, up to data, clinical first-line drugs have ambiguous benefits and debilitating side effects, mainly due to the insufficient accumulation, poor physiological barrier penetration, and lack of spatio-temporal controlled release at lesion tissue. Herein, we proposed a supramolecular assemblies composed of hyperbranched polymer-formed core/shell structure through host-guest interactions. Such HPAA-BM@CD-HPG-C assemblies co-loaded with p38 inhibitor (SB203580) and insulin-like growth factor 1(IGF-1) are able to achieve time- and space-programmed sequential delivery benefiting from their cascaded responsiveness. The core-shell disassembly of HPAA-BM@CD-HPG-C occurs in acidic micro-environment around lesion, achieving preferentially the burst release of IGF-1 to protect survival neurons. Subsequently, the HPAA-BM cores containing SB203580 are endocytosed by the recruited macrophages and degraded by intracellular GSH, accelerating the release of SB203580 to promote the conversion from M1 to M2 macrophage. Hence, the successive synergy of neuroprotection and immunoregulation effects contribute to subsequent nerve repair and locomotor recovery as demonstrated in vitro and in vivo studies. Thus, our fabrication provides a strategy that multiple drugs co-delivery in a spatio-temporal selective manner adapting to the disease progression through self-cascaded disintegration, are expected to realize multidimensional precise treatment of SCI.
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Fator de Crescimento Insulin-Like I , Traumatismos da Medula Espinal , Humanos , Fator de Crescimento Insulin-Like I/farmacologia , Neuroproteção , Traumatismos da Medula Espinal/tratamento farmacológico , Macrófagos/metabolismo , Sistemas de Liberação de Medicamentos , Medula Espinal/metabolismoRESUMO
The availability of a large quantity of MSCs (mesenchymal stem cells) would greatly advance liver-directed cell therapies. However, MSCs have a limited lifespan in vitro. Therefore we tested whether hUCMSCs (human umbilical cord MSCs) could be immortalized by transduction with a lentiviral vector carrying the hTERT (human telomerase reverse transcriptase) catalytic subunit gene, and investigated their differentiation potential. Transfected hUCMSCs overexpressed the hTERT gene and up-regulated their telomerase activity. The transfected hUCMSCs maintained their typical morphology and MSC-specific markers, and vigorously proliferated, undergoing more than 100 PDs (population doublings) to date. Following incubation with hepatogenic agents, the transfected hUCMSCs differentiated into hepatocyte-like cells, and expressed hepatic markers, such as albumin, AFP (α-fetoprotein) and CK-18 (cytokeratin-18). Transfected hUCMSCs showed no transformation into tumours in nude mice. In conclusion, telomerization of hUCMSCs by hTERT overexpression extends their replicative lifespan without influencing their hepatogenic differentiation potential. This offers opportunities for obtaining sufficient quantities of cells for liver-directed therapies.
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Diferenciação Celular/genética , Hepatócitos/citologia , Células-Tronco Mesenquimais/citologia , Telomerase/genética , Transfecção , Cordão Umbilical/citologia , Animais , Proliferação de Células , Hepatócitos/metabolismo , Humanos , Queratina-18/metabolismo , Transplante de Células-Tronco Mesenquimais , Camundongos , Camundongos Nus , Albumina Sérica/metabolismo , Telomerase/metabolismo , alfa-Fetoproteínas/metabolismoRESUMO
Multiple ecosystems (grassland, desert and shrubs) always coexist in ecologically fragile areas. Influence by external environmental conditions and human activities, one ecosystem in ecologically fragile areas would be changed into another, called abrupt change. It is important to analyze the stability of each ecosystem in ecologically fragile areas under the condition of multiple ecosystems coexistence for understanding ecosystem changes. In this article, we reviewed several mathematical models that can describe the dynamic system and stability of multiple ecosystems in ecologically fragile areas. The dynamic system described by differential equations included the uniform and non-uniform ecosystems, as well as multi-ecosystems with the existence of forests, grasses, and deserts. There were three types of methods for analyzing the stability of the ecosystem. One type was the analysis method of ecosystem stability caused by the initial perturbation that could represent human activities, and the other type was the analysis method of ecosystem stability caused by the model perturbation that can represent the changes of environmental factors (precipitation, temperature, etc.), and the third type was the analysis method of ecosystem stability caused by the combination of initial perturbation and model perturbation. Finally, we introduced how to analyze the stabilities of ecosystem in ecologically fragile areas with those methods. These mathematical methods not only help us understand the stability of the ecosystems in the ecologically fragile area, but also provide theoretical guidance for the abrupt change of the ecological system, future prediction, and management.
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Ecossistema , Florestas , Atividades Humanas , Humanos , Modelos Teóricos , PoaceaeRESUMO
The most frequent internal modification in eukaryotic mRNA is N6-methyladenosine (m6A). However, what we know about the m6A regulators in Ankylosing spondylitis (AS) is still limited. In our study, eight distinct m6A regulators were selected utilizing Differentially Expressed Gene (DEG) analysis of the Gene Expression Omnibus GSE73754 dataset for making comparisons between AS (Ankylosing spondylitis) and non-AS patients. The random forest model and the nomogram model were used to screen the eight candidate m6A regulators and evaluate their prediction accuracy for the occurrence of AS. Furthermore, based on the selected m6A regulators, the AS patients were divided into two subgroups, and we applied principal component analysis algorithms to calculate their m6A score and evaluate the m6A patterns. Our findings revealed that patients in cluster A were linked to activated CD4 T cell immunity and activated CD8 T cell immunity. With its major contributions in the area of immunology, our research in m6A patterns may benefit the future diagnosis and treatment strategies of AS.
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Espondilite Anquilosante , Adenosina/análogos & derivados , Adenosina/genética , Humanos , Metilação , RNA Mensageiro/metabolismo , Espondilite Anquilosante/diagnóstico , Espondilite Anquilosante/genéticaRESUMO
In recent decades, the reclamation of lakes has captured 42% of the total lake area of the Yangtze Plain in China and introduced additional pressure on lacustrine water quality. While lacustrine dissolved organic matter (DOM) is critical in regulating biogeochemical processing and aquatic biodiversity, the impact of reclamation on the molecular-level characteristics of lacustrine DOM remains unexplored. Here, the DOM characteristics altered by reclamation practices in the Yangtze Plain lakes were investigated using fluorescence spectroscopy, nuclear magnetic resonance spectroscopy, and Fourier transform ion cyclotron resonance mass spectrometry. Results demonstrated that reclamation not only elevated the quantity (on average +32%) but also altered the characteristics and composition of lacustrine DOM. Compared to the natural water sites close by, reclamation sites did not significantly alter the DOM aromaticity but significantly lowered the average molecular weight and increased the biolability of DOM. The chromophoric DOM and humic-like fluorescent components were remarkably elevated, but not the protein-like fluorescent components. More lipid-like and condensed aromatic-like components were detected in the lacustrine DOM as compared to the lignin-like, carbohydrate-like, and protein-like components, which may be driven by the increased microbial processing. Overall, the significant alteration in characteristics and composition of lacustrine DOM highlights the potential impact of reclamation on the DOM biogeochemical cycle and the environmental quality in aquatic ecosystems.
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Matéria Orgânica Dissolvida , Ecossistema , China , Lagos/química , Espectrometria de Fluorescência/métodos , Qualidade da ÁguaRESUMO
OBJECTIVE: To investigate the RHD zygosity of Rh(D)-positive Chinese Hans in order to study the mother-fetus Rh isoimmunization prophylaxis. METHODS: Rh(D) blood group of 31 115 donors were serotyped, and the RHD zygosities were analyzed, or determined through a PCR method for 3628 donors of Rh(D)-positive individuals. RESULTS: Among the 31 115 donors, 99 were tested Rh(D)-negative by indirect antiglobulin test (IAT) (0.318%). The d frequency was 0.056 41, D was 0.943 59, and Dd heterozygosity was 0.106 45 (10.6%). However the rate was 0.090 32 (about 9.0%) after excluding DEL (IAT-negative). For the 3628 PCR tested donors, 3383 were DD (93.2%), 245 were Dd (6.8%). After excluding nonfunctional RHD alleles, 7.4% of the donors were carrying one functional RHD. It showed that an Rh(D)-negative Chinese Han woman gives an Rh(D)-negative child at a rate of 3.7%-4.5% when her husband is Rh(D)-positive. CONCLUSION: Fetus Rh(D) genotyping may be unnecessary for Chinese Hans if invasive operation was needed for prenatal diagnosis. The Rh prophylaxis could be chosen assuming an Rh(D)-positive fetus.
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Povo Asiático/genética , Sistema do Grupo Sanguíneo Rh-Hr/genética , Adolescente , Adulto , China/etnologia , Feminino , Humanos , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Sistema do Grupo Sanguíneo Rh-Hr/sangueRESUMO
PURPOSE: To analyze the risk factors of multiple organ dysfunction syndromes (MODS) caused by sepsis. PATIENTS AND METHODS: A total of 180 patients with sepsis admitted to The First Affiliated Hospital of Harbin Medical University (No. 23, Post Street, Nangang District, Harbin 150001, Heilongjiang province, China) from July 2018 to June 2019 were selected and divided into a non-MODS group and a MODS group, with 90 cases in each group. Clinical data of the patients were retrospectively analyzed, and univariable and multivariable analyses were performed. RESULTS: The univariable analysis showed that there were no significant differences in terms of age, body temperature, heart rate, respiration, mean arterial pressure, RBC specific volume, blood sodium, serum kalium, and infection site (P > 0.05). Whereas significant differences were found between the groups in terms of gender, arterial blood pH, WBC count, Apache II score, blood glucose, creatinine, chronic medical history, surgery, and ventilator usage (P < 0.05). The growth of bacterial culture, the increase of creatinine level, chronic diseases and Apache II score were discovered to have significant effects on the occurrence of MODS through the multivariable logistic regression analysis. CONCLUSION: Bacterial culture, serum creatinine level, history of chronic disease and Apache II score may be risk factors of MODS in sepsis patients.
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BACKGROUND: Lumbar disc herniation (LDH) has emerged as one of the most common causes of low back pain. The routine treatment approach involves chemonucleolysis therapy, discectomy by percutaneous endoscopy, and percutaneous laser disc decompression. Unfortunately, all of these methods carry inherent risk of causing harm to the patient and, as such, there is an unmet but urgent need for an effective and safe noninvasive treatment for LDH. The purpose of this report is to describe a non-invasive method for re-absorption of LDH. CASE SUMMARY: A 34-year-old woman was admitted with a complaint of waist pain that she reported as having become acutely aggravated over the past 3 d and accompanied by discomfort in the right lower limb. Her self-reported medical history included persistent postpartum low back pain from 7 years prior. Physical exam showed positivity for neck flexion test (Lindner sign) and supine abdomen test; the straight leg-raising test showed right 60(+) and left 80(-). Findings from standard imaging (magnetic resonance) and collective physical examinations indicated a L5/S1 herniated lumbar disc. Treatment consisted of three-dimensional (balanced regulating) spinal manipulation and acupuncture, upon which the LDH resolved by retraction. CONCLUSION: Following L5/S1 herniated lumbar disc diagnosis, three-dimensional (balanced regulating) spinal manipulation combined with acupuncture therapy is an effective treatment.
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Qinbaiqingfei concentrated pills (QB) are a commonly used medicine for the treatment of mycoplasma pneumonia in China, and the mechanism of action of QB needs to be studied further. Therefore, we use a combination of metabolomics and network pharmacology to clarify the mechanism of QB. Nontarget metabolomics studies were performed on rat serum, urine, and lung tissues, and 56 therapeutic biomarkers were found. Subsequently, the components of QB absorbed into the blood and lung tissues were clarified, and based on this finding, the core target of network pharmacology was predicted. The enrichment analysis of biomarkers-genes finally confirmed their close relationship with the NF-κB signaling pathway. By western blotting expression of the proteins in the lung tissue-related signaling pathways, it is finally confirmed that QB inhibits the NF-κB signaling pathway through SIRT1, IL-10 and MMP9, CTNNB1, EGFR, and other targets. It plays a role in regulating immunity, regulating metabolism, and treating diseases.