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1.
Phytomedicine ; 124: 155307, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38181529

RESUMO

BACKGROUND: Sepsis-associated encephalopathy (SAE), a common neurological complication from sepsis, is widespread among patients in intensive care unit and is linked to substantial morbidity and mortality rates, thus posing a substantial menace to human health. Due to the intricate nature of SAE's pathogenesis, there remains a dearth of efficacious therapeutic protocols, encompassing pharmaceutical agents and treatment modalities, up until the present time. Palmatine exhibits distinctive benefits in the regulation of inflammation for the improvement of sepsis. Nevertheless, the precise functions of palmatine in treating SAE and its underlying mechanism have yet to be elucidated. PURPOSE: This study aimed to evaluate efficiency of palmatine in SAE mice and its underlying mechanisms. STUDY DESIGN AND METHODS: Behavioral experiments, percent survival rate analysis, histological analysis, immunofluorescence staining, ELISA analysis, were performed to evaluate the efficiency of palmatine in SAE mice. Quantibody® mouse inflammation array glass chip was performed to observe the effects of palmatine on inflammation storm in SAE mice. Real-time quantitative and western blotting analyzes were employed to examine the expression of relevant targets in the Notch1/nuclear factor-kappa B (NF-κB) pathway. Finally, brain tissues metabolomics-based analyzes were performed to detect the differentially expressed metabolites and metabolic pathways. The fecal samples were subjected to microbial 16S rRNA analysis and untargeted metabolomics analysis in order to identify the specific flora and metabolites associated with SAE, thereby further investigating the mechanism of palmatine in SAE mice. RESULTS: Our results showed that palmatine significantly improved nerve function, reduced cell apoptosis in brain tissue, and decreased inflammatory cytokine levels in SAE induced-LPS mice. Meanwhile, our results demonstrate the potential of palmatine in modulating key components of the Notch1/NF-κB pathway, enhancing the expression of tight junction proteins, improving intestinal permeability, promoting the growth of beneficial bacteria (such as Lachnospiraceae_NK4A136_group), inhibiting the proliferation of harmful bacteria (such as Escherichia-Shigella), and mitigating metabolic disorders. Ultimately, these observed effects contribute to the therapeutic efficacy of palmatine in treating SAE. CONCLUSION: The findings of our study have provided confirmation regarding the efficacy of palmatine in the treatment of SAE, thereby establishing a solid foundation for further exploration into SAE therapy and the advancement and investigation of palmatine.


Assuntos
Alcaloides de Berberina , Encefalopatia Associada a Sepse , Sepse , Humanos , Animais , Camundongos , Encefalopatia Associada a Sepse/tratamento farmacológico , Lipopolissacarídeos , Eixo Encéfalo-Intestino , NF-kappa B , RNA Ribossômico 16S , Sepse/complicações , Sepse/tratamento farmacológico
2.
Neuron ; 112(1): 155-173.e8, 2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-37944520

RESUMO

The hypocretin (Hcrt) (also known as orexin) neuropeptidic wakefulness-promoting system is implicated in the regulation of spatial memory, but its specific role and mechanisms remain poorly understood. In this study, we revealed the innervation of the medial entorhinal cortex (MEC) by Hcrt neurons in mice. Using the genetically encoded G-protein-coupled receptor activation-based Hcrt sensor, we observed a significant increase in Hcrt levels in the MEC during novel object-place exploration. We identified the function of Hcrt at presynaptic glutamatergic terminals, where it recruits fast-spiking parvalbumin-positive neurons and promotes gamma oscillations. Bidirectional manipulations of Hcrt neurons' projections from the lateral hypothalamus (LHHcrt) to MEC revealed the essential role of this pathway in regulating object-place memory encoding, but not recall, through the modulation of gamma oscillations. Our findings highlight the significance of the LHHcrt-MEC circuitry in supporting spatial memory and reveal a unique neural basis for the hypothalamic regulation of spatial memory.


Assuntos
Hipotálamo , Memória Espacial , Camundongos , Animais , Orexinas/metabolismo , Hipotálamo/metabolismo , Neurônios/fisiologia , Região Hipotalâmica Lateral/fisiologia
3.
Commun Biol ; 6(1): 1255, 2023 12 12.
Artigo em Inglês | MEDLINE | ID: mdl-38087004

RESUMO

The hypothalamic supramammillary nucleus (SuM) plays a crucial role in controlling wakefulness, but the downstream target regions participating in this control process remain unknown. Here, using circuit-specific fiber photometry and single-neuron electrophysiology together with electroencephalogram, electromyogram and behavioral recordings, we find that approximately half of SuM neurons that project to the medial septum (MS) are wake-active. Optogenetic stimulation of axonal terminals of SuM-MS projection induces a rapid and reliable transition to wakefulness from non-rapid-eye movement or rapid-eye movement sleep, and chemogenetic activation of SuMMS projecting neurons significantly increases wakefulness time and prolongs latency to sleep. Consistently, chemogenetically inhibiting these neurons significantly reduces wakefulness time and latency to sleep. Therefore, these results identify the MS as a functional downstream target of SuM and provide evidence for the modulation of wakefulness by this hypothalamic-septal projection.


Assuntos
Neurônios , Vigília , Camundongos , Animais , Vigília/fisiologia , Neurônios/fisiologia , Hipotálamo , Sono/fisiologia , Sono REM/fisiologia
4.
Nat Cell Biol ; 25(11): 1650-1663, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37884645

RESUMO

Precise control of circulating lipids is instrumental in health and disease. Bulk lipids, carried by specialized lipoproteins, are secreted into the circulation, initially via the coat protein complex II (COPII). How the universal COPII machinery accommodates the abundant yet unconventional lipoproteins remains unclear, let alone its therapeutic translation. Here we report that COPII uses manganese-tuning, self-constrained condensation to selectively drive lipoprotein delivery and set lipid homeostasis in vivo. Serendipitously, adenovirus hijacks the condensation-based transport mechanism, thus enabling the identification of cytosolic manganese as an unexpected control signal. Manganese directly binds the inner COPII coat and enhances its condensation, thereby shifting the assembly-versus-dynamics balance of the transport machinery. Manganese can be mobilized from mitochondria stores to signal COPII, and selectively controls lipoprotein secretion with a distinctive, bell-shaped function. Consequently, dietary titration of manganese enables tailored lipid management that counters pathological dyslipidaemia and atherosclerosis, implicating a condensation-targeting strategy with broad therapeutic potential for cardio-metabolic health.


Assuntos
Lipoproteínas , Manganês , Transporte Biológico , Homeostase , Lipídeos , Transporte Proteico/fisiologia
5.
Food Chem ; 427: 136731, 2023 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-37392631

RESUMO

The present study sought to develop a novel healthy margarine fat with low levels of trans and saturated fatty acids in order to promote healthier alternatives. In this work, tiger nut oil was first used as a raw material to prepare margarine fat. The effects of mass ratio, reaction temperature, catalyst dosage, and time on the interesterification reaction were investigated and optimized. The results showed that, the margarine fat with ≤40% saturated fatty acids was achieved using a 6:4 mass ratio of tiger nut oil to palm stearin. The ideal interesterification parameters were 80 °C, 0.36% (w/w) catalyst dosage, and 32 min. Compared with physical blends, the interesterified oil had lower solid fat content (3.71% at 35 °C), lower slip melting point (33.5 °C), and lower levels of tri-saturated triacylglycerols (1.27%). This investigation provides important information for the utilization of tiger nut oil in healthy margarine formulation.


Assuntos
Ácidos Graxos , Ácidos Graxos trans , Margarina , Óleos de Plantas , Triglicerídeos , Fenômenos Químicos , Nutrientes , Esterificação , Óleo de Palmeira
6.
Zhongguo Zhong Yao Za Zhi ; 48(2): 492-506, 2023 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-36725239

RESUMO

This study aimed to investigate the effective substances and mechanism of Yishen Guluo Mixture in the treatment of chronic glomerulonephritis(CGN) based on metabolomics and serum pharmacochemistry. The rat model of CGN was induced by cationic bovine serum albumin(C-BSA). After intragastric administration of Yishen Guluo Mixture, the biochemical indexes related to renal function(24-hour urinary protein, serum urea nitrogen, and creatinine) were determined, and the efficacy evaluations such as histopathological observation were carried out. The serum biomarkers of Yishen Guluo Mixture in the treatment of CGN were screened out by ultra-performance liquid chromatography-quadrupole time-of-flight/mass spectrometry(UPLC-Q-TOF-MS) combined with multivariate statistical analysis, and the metabolic pathways were analyzed. According to the mass spectrum ion fragment information and metabolic pathway, the components absorbed into the blood(prototypes and metabolites) from Yishen Guluo Mixture were identified and analyzed by using PeakView 1.2 and MetabolitePilot 2.0.4. By integrating metabolomics and serum pharmacochemistry data, a mathematical model of correlation analysis between serum biomarkers and components absorbed into blood was constructed to screen out the potential effective substances of Yishen Guluo Mixture in the treatment of CGN. Yishen Guluo mixture significantly decreased the levels of 24-hour urinary protein, serum urea nitrogen, and creatinine in rats with CGN, and improved the pathological damage of the kidney tissue. Twenty serum biomarkers of Yishen Guluo Mixture in the treatment of CGN, such as arachidonic acid and lysophosphatidylcholine, were screened out, involving arachidonic acid metabolism, glycerol phosphatide metabolism, and other pathways. Based on the serum pharmacochemistry, 8 prototype components and 20 metabolites in the serum-containing Yishen Guluo Mixture were identified. According to the metabolomics and correlation analysis of serum pharmacochemistry, 12 compounds such as genistein absorbed into the blood from Yishen Guluo Mixture were selected as the potential effective substances for the treatment of CGN. Based on metabolomics and serum pharmacochemistry, the effective substances and mechanism of Yishen Guluo Mixture in the treatment of CGN are analyzed and explained in this study, which provides a new idea for the development of innovative traditional Chinese medicine for the treatment of CGN.


Assuntos
Medicamentos de Ervas Chinesas , Glomerulonefrite , Animais , Ratos , Ácido Araquidônico , Biomarcadores/sangue , Proteínas Sanguíneas , Cromatografia Líquida de Alta Pressão , Creatinina , Medicamentos de Ervas Chinesas/farmacologia , Medicamentos de Ervas Chinesas/uso terapêutico , Glomerulonefrite/sangue , Glomerulonefrite/tratamento farmacológico , Glomerulonefrite/metabolismo , Metabolômica , Ureia , Doença Crônica , Modelos Animais de Doenças , Misturas Complexas/farmacologia , Misturas Complexas/uso terapêutico
7.
J Ethnopharmacol ; 298: 115570, 2022 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-35868549

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: the fruit of Schisandra chinensis (Turcz.) Baill. (SC) is an important traditional Chinese herbal medicine, which has been widely used in traditional Chinese medicine (TCM) for treating intestinal diseases. It is also traditionally used as health product and medicine in Russia and other countries. However, the effect of SC ethanol extract on anti-ulcerative colitis (UC) has not been systematically studied yet. AIM OF THE STUDY: We investigated the protective effects and underlying action mechanisms of SC extract (SCE) for UC treatment. MATERIALS AND METHODS: An animal model of UC induced by dextran sulfate sodium (DSS) was established. After oral administration of SCE, the Disease Activity Index (DAI) was calculated, the length of colon measured, levels of proinflammatory factors determined, and histopathology carried out to assess the therapeutic efficacy of SCE on UC. The effects of SCE on the toll-like receptor 4/nuclear factor-kappa B/nucleotide-binding and oligomerization domain-like receptor family pyrin domain containing 3 inflammasome (TLR4/NF-κB/NLRP3 inflammasome) signaling pathway were evaluated by western blotting. High-throughput sequencing was done to reveal the effect of SCE on the change of the gut microbiota (GM) in mice with DSS-induced colitis. RESULTS: SCE significantly reduced the DAI score, restored colon-length shortening, and ameliorated colonic histopathologic injury in mice with DSS-induced colitis. SCE inhibited the inflammatory response by regulating the TLR4/NF-κB/NLRP3 inflammasome pathway in mice with UC. SCE also maintained gut barrier function by increasing the levels of zonula occludens (ZO)-1 and occludin. 16S rRNA sequencing showed that SCE could reverse the GM imbalance caused by UC. CONCLUSIONS: SCE can ameliorate DSS-induced colitis, and that its effects might be associated with suppression of the TLR4/NF-κB/NLRP3 inflammasome pathway and GM regulation, which may provide significant supports for the development of potential candidates for UC treatment.


Assuntos
Colite Ulcerativa , Colite , Microbioma Gastrointestinal , Schisandra , Animais , Colite/induzido quimicamente , Colite/tratamento farmacológico , Colite/prevenção & controle , Colite Ulcerativa/tratamento farmacológico , Sulfato de Dextrana/toxicidade , Inflamassomos/metabolismo , Camundongos , NF-kappa B/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , RNA Ribossômico 16S , Receptor 4 Toll-Like/metabolismo
8.
Zhongguo Zhong Yao Za Zhi ; 47(1): 188-202, 2022 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-35178926

RESUMO

This study aims to study the effective substance and mechanism of Ziziphi Spinosae Semen extract in the treatment of insomnia based on serum metabolomics and network pharmacology. The rat insomnia model induced by p-chlorophenylalanine(PCPA) was established. After oral administration of Ziziphi Spinosae Semen extract, the general morphological observation, pentobarbital sodium-induced sleep test, and histopathological evaluation were carried out. The potential biomarkers of the extract in the treatment of insomnia were screened by ultra-high performance liquid chromatography-mass spectrometry(UHPLC-MS) combined with multivariate analysis, and the related metabolic pathways were further analyzed. The "component-target-pathway" network was constructed by ultra-high performance liquid chromatography coupled with quadrupole-Exactive mass spectrometry(UHPLC-Q-Exactive-MS/MS) combined with network pharmacology to explore the effective substances and mechanism of Ziziphi Spinosae Semen in the treatment of insomnia. The results of pentobarbital sodium-induced sleep test and histopathological evaluation(hematoxylin and eosin staining) showed that Ziziphi Spinosae Semen extract had good theraputic effect on insomnia. A total of 21 endogenous biomarkers of Ziziphi Spinosae Semen extract in the treatment of insomnia were screened out by serum metabolomics, and the metabolic pathways of phenylalanine, tyrosine and tryptophan biosynthesis, phenylalanine metabolism, and nicotinate and nicotinamide metabolism were obtained. A total of 34 chemical constituents were identified by UHPLC-Q-Exactive-MS/MS, including 24 flavonoids, 2 triterpenoid saponins, 4 alkaloids, 2 triterpenoid acids, and 2 fatty acids. The network pharmacological analysis showed that Ziziphi Spinosae Semen mainly acted on target proteins such as dopamine D2 receptor(DRD2), 5-hydroxytryptamine receptor 1 A(HTR1 A), and alpha-2 A adrenergic receptor(ADRA2 A) in the treatment of insomnia. It was closely related to neuroactive ligand-receptor interaction, serotonergic synapse, and calcium signaling pathway. Magnoflorine, N-nornuciferine, caaverine, oleic acid, palmitic acid, coclaurine, betulinic acid, and ceanothic acid in Ziziphi Spinosae Semen may be potential effective compounds in the treatment of insomnia. This study revealed that Ziziphi Spinosae Semen extract treated insomnia through multiple metabolic pathways and the overall correction of metabolic disorder profile in a multi-component, multi-target, and multi-channel manner. Briefly, this study lays a foundation for further research on the mechanism of Ziziphi Spinosae Semen in treating insomnia and provides support for the development of innovative Chinese drugs for the treatment of insomnia.


Assuntos
Medicamentos de Ervas Chinesas , Distúrbios do Início e da Manutenção do Sono , Ziziphus/química , Animais , Cromatografia Líquida de Alta Pressão , Medicamentos de Ervas Chinesas/química , Metabolômica , Farmacologia em Rede , Ratos , Sementes/química , Distúrbios do Início e da Manutenção do Sono/tratamento farmacológico , Espectrometria de Massas em Tandem
9.
Sci China Life Sci ; 65(3): 466-499, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34985643

RESUMO

All animals possess a plethora of innate behaviors that do not require extensive learning and are fundamental for their survival and propagation. With the advent of newly-developed techniques such as viral tracing and optogenetic and chemogenetic tools, recent studies are gradually unraveling neural circuits underlying different innate behaviors. Here, we summarize current development in our understanding of the neural circuits controlling predation, feeding, male-typical mating, and urination, highlighting the role of genetically defined neurons and their connections in sensory triggering, sensory to motor/motivation transformation, motor/motivation encoding during these different behaviors. Along the way, we discuss possible mechanisms underlying binge-eating disorder and the pro-social effects of the neuropeptide oxytocin, elucidating the clinical relevance of studying neural circuits underlying essential innate functions. Finally, we discuss some exciting brain structures recurrently appearing in the regulation of different behaviors, which suggests both divergence and convergence in the neural encoding of specific innate behaviors. Going forward, we emphasize the importance of multi-angle and cross-species dissections in delineating neural circuits that control innate behaviors.


Assuntos
Comportamento Animal , Vias Neurais/fisiologia , Animais , Bulimia , Hipotálamo/fisiologia , Ocitocina/farmacologia , Comportamento Predatório/fisiologia , Comportamento Sexual Animal/fisiologia , Comportamento Social , Vias Visuais/fisiologia , Zona Incerta/fisiologia
10.
Food Chem ; 370: 131030, 2022 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-34507209

RESUMO

Phytosterols are commonly found in vegetable oils and possess health benefits for humans. While investigating the chemical conversion of stigmasterol at deodorisation temperatures, gas chromatography-mass spectrometry (GC-MS) and ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS) experiments led to the identification of 5-ethyl-6-methyl-3-heptene-2-one, 3-hydoxy-steroid, 3-ketostigmasterol, and 3,7-diketostigmasterol as by-products. The identification of these compounds assisted in the interpretation of the stigmasterol oligomers characterised by high-pressure size exclusion chromatography (HPSEC). A similar analysis was conducted in stripped corn oil at the deodorisation temperatures. As such, 5-ethyl-6-methyl-3-heptene-2-one, 3-hydoxy-steroid, 3-ketostigmasterol and 3,7-diketostigmasterol were also detected in stripped corn oil, while the contents of 3-hydoxy-steroid and 5-ethyl-6-methyl-3-heptene-2-one were higher than those of 3-ketostigmasterol, as revealed by quantum chemical simulations. In addition, stripped corn oil exhibited the characteristic of preventing stigmasterol degradation below 200 °C, whereas it enhanced the chemical conversion (such as esterification and degradation) of stigmasterol at higher temperatures.


Assuntos
Fitosteróis , Estigmasterol , Cromatografia Líquida de Alta Pressão , Óleo de Milho , Humanos , Óleos de Plantas , Temperatura , Zea mays
11.
BMJ Open ; 11(9): e045655, 2021 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-34518248

RESUMO

INTRODUCTION: Irritable bowel syndrome (IBS) is a common chronic functional gastrointestinal disorder that presents with abdominal pain/discomfort and altered bowel patterns. IBS has multiple potential causes for which conventional medicines have had limited success, resulting in a significant number of patients who do not sensitively respond to pharmacotherapy for a period of 12 months and who develop a continuing symptom profile (described as refractory IBS) and seek help through (non)pharmacological treatments. The aim of this study is to investigate the efficacy and safety of acupuncture therapy for refractory IBS on the basis of conventional treatments. METHODS AND ANALYSIS: A total of 170 eligible patients who meet the Rome IV criteria for refractory IBS will be randomly allocated to receive acupuncture or sham acupuncture. Each patient will receive 12 sessions of acupuncture over 4 weeks and a 4-week follow-up. The primary outcome will be the IBS Symptom Severity Score. Secondary outcomes will include the proportion of participants experiencing adequate relief of global IBS symptoms, the weekly frequency of defecation, the stool properties assessed by the Bristol Grading Scale, the Work and Social Adjustment Scale, the IBS-Quality of Life score, and the Self-Rating Depression Scale and Self-Rating Anxiety Scale anxiety and depression scores. Outcome measures will be collected at baseline, 2 and 4 weeks of the intervention, and 6 and 8 weeks after the intervention. Categorical variables will be compared with Fisher's exact test or the Wilcoxon rank-sum test, and continuous variables will be compared using Student's t-test or the Wilcoxon rank-sum test. ETHICS AND DISSEMINATION: The entire project has been approved by the ethics committees of Beijing University of Chinese Medicine (2020BZYLL0507) and Sichuan Province Regional Institution for Conducting Research on Traditional Chinese Medicine (2020KL-025). The outcomes of the trial will be disseminated through peer-reviewed publications. TRIAL REGISTRATION NUMBER: NCT04276961.


Assuntos
Terapia por Acupuntura , Síndrome do Intestino Irritável , Dor Abdominal/etiologia , Dor Abdominal/terapia , Humanos , Síndrome do Intestino Irritável/terapia , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
12.
J Oleo Sci ; 70(2): 155-164, 2021 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-33456002

RESUMO

Functional compositions, physicochemical properties and antioxidant activities of Amaranthus caudatus L. oils (ACO) obtained by different solvents were comparatively investigated. All the resulted ACO were enrich in 75% unsaturated fatty acid and in squalene of about 4 g/100 g. Different solvents showed varying in oil extraction, where acetone results a highest yield of 6.80 g/100 g. ACO extracted by ethanol showed a highest tocopherol (1351.26 mg/kg), polyphenols (211.28 mg/kg) and squalene (42519.13 mg/kg). However, phytosterols in ACO extracted by hexane (27571.20 mg/kg) was higher than that by acetone (19789.91 mg/kg), ethanol (22015.73 mg/kg) and petroleum ether (24763.30 mg/kg). Furthermore, antioxidant activity of ACO was also measured by DPPH, ABTS and FRAP assay. According to principal component and correlation analysis, squalene was correlated with the DPPH scavenging ability, but phytosterols and tocopherols was correlated with the ABTS and ferric reducing ability of the oils, respectively. This study provides a promising excellent source of functional oil for food industries.


Assuntos
Amaranthus/química , Antioxidantes , Fenômenos Químicos , Extração Líquido-Líquido/métodos , Óleos de Plantas/isolamento & purificação , Óleos de Plantas/farmacologia , Solventes , Acetona , Alcanos , Cromatografia Líquida de Alta Pressão , Etanol , Ácidos Graxos Insaturados/análise , Ácidos Graxos Insaturados/isolamento & purificação , Ácidos Graxos Insaturados/farmacologia , Cromatografia Gasosa-Espectrometria de Massas , Hexanos , Fitosteróis/análise , Fitosteróis/isolamento & purificação , Fitosteróis/farmacologia , Óleos de Plantas/análise , Óleos de Plantas/química , Polifenóis/análise , Polifenóis/isolamento & purificação , Polifenóis/farmacologia , Esqualeno/análise , Esqualeno/isolamento & purificação , Esqualeno/farmacologia , Tocoferóis/análise , Tocoferóis/isolamento & purificação , Tocoferóis/farmacologia
13.
J Sci Food Agric ; 101(7): 2736-2743, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33124037

RESUMO

BACKGROUND: Phytosterols are partly removed during oil refining, and the magnitude of phytosterols loss largely depends on the refining conditions applied and the molecular conformation. The aim of this research was to study the effect of deodorization conditions and molecular unsaturation on the esterification of phytosterols during deodorization of corn oil. RESULTS: In the chemical model, free fatty acids (FFAs) were the major provider of acyl groups during the formation of phytosteryl fatty acid esters (PEs) under deodorization conditions. Among the main parameters of the deodorization, temperature played a role in the formation of PEs with a time-dependent manner. In comparison, saturated palmitic acid had a higher capability of esterifying free phytosterols (FPs) to PEs than unsaturated oleic acid and linoleic acid. Moreover, the influence of FFA unsaturation on the degradation of FPs depended on temperature. Besides, the formation of stigmasteryl ester had a competitive advantage over that of sitosteryl ester by quantum chemistry simulation. CONCLUSION: For laboratory-scale deodorization of corn oil, saturated fatty acids and deodorization process with steam as stripping gas could obviously esterify FPs to PEs. FPs were abundantly enriched in distillate during the deodorization process with nitrogen as stripping gas, whereas FPs and PEs were distilled simultaneously during the deodorization process with steam. © 2020 Society of Chemical Industry.


Assuntos
Óleo de Milho/química , Ácidos Graxos não Esterificados/química , Fitosteróis/química , Esterificação , Ésteres/química , Odorantes/análise , Temperatura
14.
Molecules ; 25(21)2020 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-33158094

RESUMO

The establishment and development of a set of methods of oil accurate recognition in a different environment are of great significance to the effective management of oil spill pollution. In this work, the concentration-emission matrix (CEM) is formed by introducing the concentration dimension. The principal component analysis (PCA) is applied to extract the spectral feature. The classification methods, such as Probabilistic Neural Networks (PNNs) and Genic Algorithm optimization Support Vector Machine (SVM) parameters (GA-SVM), are used for oil identification and the recognition accuracies of the two classification methods are compared. The results show that the GA-SVM combined with PCA has the highest recognition accuracy for different oils. The proposed approach has great potential in rapid and accurate oil source identification.


Assuntos
Poluição por Petróleo , Petróleo/análise , Água do Mar/análise , Máquina de Vetores de Suporte , Poluentes Químicos da Água/análise , Análise de Componente Principal , Espectroscopia de Luz Próxima ao Infravermelho
15.
Nan Fang Yi Ke Da Xue Xue Bao ; 40(10): 1488-1492, 2020 Oct 30.
Artigo em Chinês | MEDLINE | ID: mdl-33118519

RESUMO

OBJECTIVE: To compare the effects of medical ozone oil and urea ointment for prevention and treatment of hand-foot skin reaction (HFSR) caused by sorafenib in patients with hepatocellular carcinoma (HCC). METHODS: A total of 99 patients diagnosed with advanced HCC according to National Comprehensive Cancer Network (NCCN) who were scheduled to receive sorafenib treatment for the first time were enrolled in this study between April, 2018 and January, 2020. The patients were randomized into medical ozone oil group (n=49) and urea ointment group (control group, n=49) for treatment with local application of 1 mL medical ozone oil (experimental group) and 10% urea ointment (2 g) on the palm and plantar skin (including the fingers and joints) for 12 weeks (3 times per day) starting at the beginning of sorafenib treatment, respectively. The patients were observed for occurrence of HFSR every 2 weeks for 14 weeks. RESULTS: Eight patients were excluded for poor compliance or protocol violations, leaving a total of 91 patients for analysis, including 44 in medical ozone oil group and 47 in urea ointment group. Sixteen (36.4%) of patients in ozone oil group developed HFSR, a rate significantly lower than that in urea ointment group (57.4%; P < 0.05). The incidence of grade 2/3 HFSR was also lower in ozone oil group than in urea ointment group (15.9% [7/44] vs 27.7 [13/47]). CONCLUSIONS: Medical ozone oil can significantly reduce the incidence and severity of HFSR to improve the quality of life of HCC patients receiving sorafenib treatment.


Assuntos
Antineoplásicos/efeitos adversos , Carcinoma Hepatocelular , Síndrome Mão-Pé , Neoplasias Hepáticas , Ozônio , Sorafenibe/efeitos adversos , Antineoplásicos/uso terapêutico , Carcinoma Hepatocelular/tratamento farmacológico , Síndrome Mão-Pé/tratamento farmacológico , Síndrome Mão-Pé/etiologia , Síndrome Mão-Pé/prevenção & controle , Humanos , Neoplasias Hepáticas/tratamento farmacológico , Niacinamida/uso terapêutico , Ozônio/uso terapêutico , Compostos de Fenilureia/efeitos adversos , Qualidade de Vida , Sorafenibe/uso terapêutico
16.
Nat Commun ; 11(1): 4361, 2020 08 31.
Artigo em Inglês | MEDLINE | ID: mdl-32868773

RESUMO

The sensory responses of cortical neuronal populations following training have been extensively studied. However, the spike firing properties of individual cortical neurons following training remain unknown. Here, we have combined two-photon Ca2+ imaging and single-cell electrophysiology in awake behaving mice following auditory associative training. We find a sparse set (~5%) of layer 2/3 neurons in the primary auditory cortex, each of which reliably exhibits high-rate prolonged burst firing responses to the trained sound. Such bursts are largely absent in the auditory cortex of untrained mice. Strikingly, in mice trained with different multitone chords, we discover distinct subsets of neurons that exhibit bursting responses specifically to a chord but neither to any constituent tone nor to the other chord. Thus, our results demonstrate an integrated representation of learned complex sounds in a small subset of cortical neurons.


Assuntos
Córtex Auditivo/fisiologia , Percepção Auditiva/fisiologia , Neurônios/fisiologia , Estimulação Acústica/métodos , Córtex Auditivo/citologia , Sinalização do Cálcio , Eletrofisiologia/métodos , Aprendizagem/fisiologia , Microscopia de Fluorescência por Excitação Multifotônica/métodos , Neurônios/metabolismo , Análise de Célula Única/métodos
17.
J Pharm Anal ; 10(2): 130-146, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32373385

RESUMO

Isatis indigotica Fort. (Ban-Lan-Gen) is an herbal medicine prescribed for influenza treatment. However, its active components and mode of action remain mostly unknown. In the present study, erucic acid was isolated from Isatis indigotica Fort., and subsequently its underlying mechanism against influenza A virus (IAV) infection was investigated in vitro and in vivo. Our results demonstrated that erucic acid exhibited broad-spectrum antiviral activity against IAV resulting from reduction of viral polymerase transcription activity. Erucic acid was found to exert inhibitory effects on IAV or viral (v) RNA-induced pro-inflammatory mediators as well as interferons (IFNs). The molecular mechanism by which erucic acid with antiviral and anti-inflammatory properties was attributed to inactivation of NF-κB and p38 MAPK signaling. Furthermore, the NF-κB and p38 MAPK inhibitory effect of erucic acid led to diminishing the transcriptional activity of interferon-stimulated gene factor 3 (ISGF-3), and thereby reducing IAV-triggered pro-inflammatory response amplification in IFN-ß-sensitized cells. Additionally, IAV- or vRNA-triggered apoptosis of alveolar epithelial A549 cells was prevented by erucic acid. In vivo, erucic acid administration consistently displayed decreased lung viral load and viral antigens expression. Meanwhile, erucic acid markedly reduced CD8+ cytotoxic T lymphocyte (CTL) recruitment, pro-apoptotic signaling, hyperactivity of multiple signaling pathways, and exacerbated immune inflammation in the lung, which resulted in decreased lung injury and mortality in mice with a mouse-adapted A/FM/1/47-MA(H1N1) strain infection. Our findings provided a mechanistic basis for the action of erucic acid against IAV-mediated inflammation and injury, suggesting that erucic acid may have a therapeutic potential in the treatment of influenza.

18.
Complement Ther Clin Pract ; 40: 101176, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32347210

RESUMO

BACKGROUND: Hemiplegia after stroke is one of the main dysfunctions in stroke patients. Acupuncture had been widely used for poststroke spastic hemiplegia (PSSH), but the efficiency was unclear. This study aimed to examine the efficiency and safety of acupuncture for individuals with PSSH. METHODS: We searched nine databases from their inception to 27th July 2019. Randomized controlled trials (RCTs) of acupuncture for the treatment of PSSH met the screening criteria. The quality of methodology was evaluated by Cochrane's risk of bias tool. RevMan 5.3 was used to perform the meta-analysis. The primary outcome was the Fugl-Myer Assessment (FMA) score, and the secondary outcomes were the Ashworth Scale for Spasticity (ASS) and Barthel Index (BI) scores. To evaluated the safety of acupuncture therapy, researchers scanned the full text to collect adverse events. RESULTS: Researchers retrieved 2452 articles in total, after screening, thirty-eight studies with 2628 participants of were included. In this meta-analysis, twenty-seven trials revealed that acupuncture therapy was associated with an increase in FMA scores compared with rehabilitation training (RT) (MD: 8.43, 95% CI, 6.57 to 10.28, p < 0.00001, I2 = 75%). According to the analysis of subgroup of interventions, ten trials showed that manual acupuncture (MA) plus RT was associated with an increase in FMA compared with RT (MD: 10.84, 95% CI, 9.29 to 13.29, p < 0.00001, I2 = 24%), three trials showed that electroacupuncture (EA) plus RT was associated with an improvement in FMA compared with RT (MD: 9.44, 95% CI, 1.00 to 17.88, p = 0.03, I2 = 81%), twelve trials showed that MA was associated with an increase in FMA compared with RT (MD: 5.48, 95% CI, 2.07 to 8.89, p = 0.002, I2 = 74%), and one trials showed that EA was associated with an improvement in FMA compared with RT (MD: 11.35, 95% CI, 5.03 to 17.67, p = 0.0004). According to the analysis of subgroup of treatment duration, four trials used acupuncture therapy for more than 1 month, revealed that acupuncture therapy was associated with an increase in FMA scores compared with RT (MD: 9.24, 95% CI, 0.42 to 18.06, p = 0.04, I2 = 93%). Thirty-two trials used acupuncture therapy for less than or equal to 1 month, revealed that acupuncture therapy was associated with an increase in FMA scores compared with RT (MD: 8.32, 95% CI, 6.56 to 10.09, p < 0.00001, I2 = 61%). Six trials indicated that acupuncture therapy was better than RT in terms of the ASS (MD: 0.46, 95% CI, -0.65 to -0.27, p < 0.00001, I2 = 67%), twenty-four trials indicated that acupuncture therapy was better than RT in terms of the BI scores (MD: 8.32, 95% CI, 5.30 to 11.35, p < 0.00001, I2 = 88%). In general, the methodologies of the RCTs were of poor quality. Two RCTs reported no adverse events, one trial reported five adverse events without severe influence, others did not mention. CONCLUSIONS: This review discovered that acupuncture might be a safe and effective adjuvant therapy for individuals with PSSH. Nevertheless, there were methodological limitations in the included RCTs, and well-designed and large-scale studies should be carried out to confirm our results.


Assuntos
Terapia por Acupuntura/métodos , Hemiplegia/terapia , Acidente Vascular Cerebral/complicações , Eletroacupuntura/métodos , Feminino , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto
19.
ACS Appl Mater Interfaces ; 12(7): 8016-8029, 2020 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-31997633

RESUMO

Arsenic trioxide (ATO) is effective in the treatment of hematological malignancies and solid tumors. However, its toxicity and side effects are severe, posing an obstacle in its clinical application. A controlled-release ATO carrier with mitochondrial targeting was constructed in this study. The safety and efficacy in vitro were investigated using a hemolysis test, cytotoxicity, proliferation, migration, apoptosis, and other changes in cell behavior. The safety and efficacy were further evaluated in vivo by hematoxylin-eosin staining, terminal deoxyribonucleotide transferase-mediated dUTP nick end labeling staining, and blood testing in tumor-bearing mice. Immunohistochemically and western blotting experiments were conducted to explore the mechanism of combination therapy of material-based chemotherapy and microwave hyperthermia in vitro. We demonstrated that the nano-zirconia (ZrO2) loading platform may be used to administer the ATO, with local precision-controlled release and mitochondrial targeting. Furthermore, we showed the safety of this approach for delivering high doses of ATO. In addition, we explored this new method in combination with in vitro microwave heat therapy, providing a potentially novel intravenous approach to chemotherapy. We described a new non-invasive treatment that improved the efficacy of ATO chemotherapy against hepatocellular carcinoma through nano-ZrO2 carriers.


Assuntos
Antineoplásicos/administração & dosagem , Trióxido de Arsênio/administração & dosagem , Carcinoma Hepatocelular/tratamento farmacológico , Portadores de Fármacos/química , Hipertermia Induzida/métodos , Neoplasias Hepáticas/tratamento farmacológico , Mitocôndrias/efeitos dos fármacos , Nanopartículas/química , Animais , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Apoptose/efeitos dos fármacos , Trióxido de Arsênio/farmacologia , Trióxido de Arsênio/uso terapêutico , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/terapia , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Preparações de Ação Retardada , Liberação Controlada de Fármacos , Células Hep G2 , Humanos , Hipertermia Induzida/instrumentação , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/terapia , Masculino , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Camundongos , Microscopia Eletrônica de Varredura , Microscopia Eletrônica de Transmissão , Nanopartículas/ultraestrutura , Tamanho da Partícula , Ensaios Antitumorais Modelo de Xenoenxerto , Zircônio/química
20.
Artigo em Inglês | MEDLINE | ID: mdl-31998400

RESUMO

Nonalcoholic Fatty Liver Disease (NAFLD) is one of the most important causes of liver disease worldwide and probably destined to become the leading cause of end-stage liver disease in the coming decades, affecting both adults and children. Faced with the severe challenges for the prevention and control of NAFLD, this article discusses the understanding and mechanism of NAFLD from Chinese and Western medicine. Moreover, the progress regarding its treatment in both Chinese and Western medicine is also summarized. Both Chinese medicine and Western medicine have their own characteristics and clinical efficacy advantages in treating diseases. The purpose of this article is to hope that Chinese and Western medicine have complementary advantages, complementing each other to improve clinical NAFLD therapy prevention and treatment methods to receive more and more attention throughout the global medical community.

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