Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 82
Filtrar
Más filtros

Medicinas Complementárias
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Inorg Chem ; 63(16): 7464-7472, 2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38598182

RESUMEN

Uranium accumulation in the kidneys and bones following internal contamination results in severe damage, emphasizing the pressing need for the discovery of actinide decorporation agents with efficient removal of uranium and low toxicity. In this work, cinnamic acid (3-phenyl-2-propenoic acid, CD), a natural aromatic carboxylic acid, is investigated as a potential uranium decorporation ligand. CD demonstrates markedly lower cytotoxicity than that of diethylenetriaminepentaacetic acid (DTPA), an actinide decorporation agent approved by the FDA, and effectively removes approximately 44.5% of uranyl from NRK-52E cells. More importantly, the results of the prompt administration of the CD solution remove 48.2 and 27.3% of uranyl from the kidneys and femurs of mice, respectively. Assessments of serum renal function reveal the potential of CD to ameliorate uranyl-induced renal injury. Furthermore, the single crystal of CD and uranyl compound (C9H7O2)2·UO2 (denoted as UO2-CD) reveals the formation of uranyl dimers as secondary building units. Thermodynamic analysis of the solution shows that CD coordinates with uranyl to form a 2:1 molar ratio complex at a physiological pH of 7.4. Density functional theory (DFT) calculations further show that CD exhibits a significant 7-fold heightened affinity for uranyl binding in comparison to DTPA.


Asunto(s)
Cinamatos , Uranio , Cinamatos/química , Cinamatos/farmacología , Animales , Ligandos , Ratones , Uranio/química , Uranio/metabolismo , Uranio/toxicidad , Riñón/efectos de los fármacos , Riñón/metabolismo , Línea Celular , Teoría Funcional de la Densidad , Ratas , Estructura Molecular , Supervivencia Celular/efectos de los fármacos , Quelantes/química , Quelantes/farmacología , Quelantes/síntesis química
2.
Sci Adv ; 9(44): eadi8500, 2023 Nov 03.
Artículo en Inglés | MEDLINE | ID: mdl-37910611

RESUMEN

The topological phase revolutionized wave transport, enabling integrated photonic interconnects with sharp light bending on a chip. However, the persistent challenge of momentum mismatch during intermedium topological mode transitions due to material impedance inconsistency remains. We present a 100-Gbps topological wireless communication link using integrated photonic devices that conserve valley momentum. The valley-conserved silicon topological waveguide antenna achieves a 12.2-dBi gain, constant group delay across a 30-GHz bandwidth and enables active beam steering within a 36° angular range. The complementary metal oxide semiconductor-compatible valley-conserved devices represent a major milestone in hybrid electronic-photonic-based topological wireless communications, enabling terabit-per-second backhaul communication, high throughput, and intermedium transport of information carriers, vital for the future of communication from the sixth to X generation.

3.
Toxicol Appl Pharmacol ; 477: 116694, 2023 10 15.
Artículo en Inglés | MEDLINE | ID: mdl-37739320

RESUMEN

Oxidative stress and insulin resistance are two key mechanisms for the development of diabetic cardiomyopathy (DCM, cardiac remodeling and dysfunction). In this review, we discussed how zinc and metallothionein (MT) protect the heart from type 1 or type 2 diabetes (T1D or T2D) through its anti-oxidative function and insulin-mediated PI3K/Akt signaling activation. Both T1D and T2D-induced DCM, shown by cardiac structural remodeling and dysfunction, in wild-type mice, but not in cardiomyocyte-specific overexpressing MT mice. In contrast, mice with global MT gene deletion were more susceptible to the development of DCM. When we used zinc to treat mice with either T1D or T2D, cardiac remodeling and dysfunction were significantly prevented along with increased cardiac MT expression. To support the role of zinc homeostasis in insulin signaling pathways, treatment of diabetic mice with zinc showed the preservation of phosphorylation levels of insulin-mediated glucose metabolism-related Akt2 and GSK-3ß and even rescued cardiac pathogenesis induced by global deletion of Akt2 gene in a MT-dependent manner. These results suggest the protection by zinc from DCM is through both the induction of MT and sensitization of insulin signaling. Combined our own and other works, this review comprehensively summarized the roles of zinc homeostasis in the development and progression of DCM and its therapeutic implications. At the end, we provided pre-clinical and clinical evidence for the preventive and therapeutic potential of zinc supplementation through its anti-oxidative stress and sensitizing insulin signaling actions. Understanding the intricate connections between zinc and DCM provides insights for the future interventional approaches.


Asunto(s)
Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 1 , Diabetes Mellitus Tipo 2 , Cardiomiopatías Diabéticas , Ratones , Animales , Cardiomiopatías Diabéticas/tratamiento farmacológico , Cardiomiopatías Diabéticas/prevención & control , Cardiomiopatías Diabéticas/metabolismo , Zinc/uso terapéutico , Zinc/metabolismo , Insulina , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Diabetes Mellitus Experimental/tratamiento farmacológico , Remodelación Ventricular , Glucógeno Sintasa Quinasa 3 beta/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Miocitos Cardíacos/metabolismo , Transducción de Señal , Estrés Oxidativo
4.
Int J Nanomedicine ; 18: 3897-3912, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37483316

RESUMEN

Background: A nanoscale drug carrier could have a variety of therapeutic and diagnostic uses provided that the carrier is biocompatible in vivo. Carbon nano-onions (CNOs) have shown promising results as a nanocarrier for drug delivery. However, the systemic effect of CNOs in rodents is unknown. Therefore, we investigated the toxicity of CNOs following intravenous administration in female BALB/c mice. Results: Single or repeated administration of oxi-CNOs (125, 250 or 500 µg) did not affect mouse behavior or organ weight and there was also no evidence of hepatotoxicity or nephrotoxicity. Histological examination of organ slices revealed a significant dose-dependent accumulation of CNO aggregates in the spleen, liver and lungs (p<0.05, ANOVA), with a trace amount of aggregates appearing in the kidneys. However, CNO aggregates in the liver did not affect CYP450 enzymes, as total hepatic CYP450 as well as CYP3A catalytic activity, as meased by erythromycin N-demethylation, and protein levels showed no significant changes between the treatment groups compared to vehicle control. CNOs also failed to act as competitive inhibitors of CYP3A in vitro in both mouse and human liver microsomes. Furthermore, CNOs did not cause oxidative stress, as indicated by the unchanged malondialdehyde levels and superoxide dismutase activity in liver microsomes and organ homogenates. Conclusion: This study provides the first evidence that short-term intravenous administration of oxi-CNOs is non-toxic to female mice and thus could be a promising novel and safe drug carrier.


Asunto(s)
Carbono , Citocromo P-450 CYP3A , Ratones , Femenino , Humanos , Animales , Cebollas , Sistema Enzimático del Citocromo P-450 , Administración Intravenosa
5.
Acta Pharm Sin B ; 13(2): 478-497, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36873180

RESUMEN

Cancer is the second leading cause of mortality globally which remains a continuing threat to human health today. Drug insensitivity and resistance are critical hurdles in cancer treatment; therefore, the development of new entities targeting malignant cells is considered a high priority. Targeted therapy is the cornerstone of precision medicine. The synthesis of benzimidazole has garnered the attention of medicinal chemists and biologists due to its remarkable medicinal and pharmacological properties. Benzimidazole has a heterocyclic pharmacophore, which is an essential scaffold in drug and pharmaceutical development. Multiple studies have demonstrated the bioactivities of benzimidazole and its derivatives as potential anticancer therapeutics, either through targeting specific molecules or non-gene-specific strategies. This review provides an update on the mechanism of actions of various benzimidazole derivatives and the structure‒activity relationship from conventional anticancer to precision healthcare and from bench to clinics.

6.
Front Bioeng Biotechnol ; 11: 1141631, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36937746

RESUMEN

Phototherapy, which generally refers to photothermal therapy (PTT) and photodynamic therapy (PDT), has received significant attention over the past few years since it is non-invasive, has effective selectivity, and has few side effects. As a result, it has become a promising alternative to traditional clinical treatments. At present, two-dimensional materials (2D materials) have proven to be at the forefront of the development of advanced nanomaterials due to their ultrathin structures and fascinating optical properties. As a result, much work has been put into developing phototherapy platforms based on 2D materials. This review summarizes the current developments in 2D materials beyond graphene for phototherapy, focusing on the novel approaches of PTT and PDT. New methods are being developed to go above and beyond conventional treatment to fully use the potential of 2D materials. Additionally, the efficacy of cutting-edge phototherapy is assessed, and the existing difficulties and future prospects of 2D materials for phototherapy are covered.

7.
Artículo en Inglés | MEDLINE | ID: mdl-36981845

RESUMEN

Policies have long been considered the essential driving force in promoting construction and demolition waste (CDW) recycling. However, the policy instruments adopted in different economies have varied greatly, which contributes to the difficulty in quantitative discernment of their effect. This study aims to examine whether the holistic employment of policy measures determines the development of CDW recycling around China. To accurately measure the holistic adoption of CDW policies, this study assessed policy strength via a proposed three-dimensional evaluation model. The spatiotemporal differences in policy strength among the 52 sample cities were further defined using K-means clustering and the Gini coefficient. Next, the driving effect of policy on the initial establishment of CDW recycling industry practices was examined by event history analysis (EHA). Finally, fuzzy set qualitative comparative analysis (fsQCA) was used to analyze the sufficiency and necessity of policy for the initial establishment of CDW recycling practices. The results indicated that the establishment of a first CDW recycling plant is only slightly correlated with policy measures, whereas it is highly correlated with the pilot city and per capita GDP. Furthermore, application of policy is neither a necessary nor sufficient condition for the establishment of a CDW recycling industry facility.


Asunto(s)
Industria de la Construcción , Administración de Residuos , Materiales de Construcción/análisis , Administración de Residuos/métodos , Industria de la Construcción/métodos , Ciudades , Reciclaje/métodos , China , Residuos Industriales/análisis
8.
PLoS One ; 18(3): e0283137, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36928292

RESUMEN

Through the application ratio of nitrogen (N), phosphorus (P) and potassium (K) in the field, L9 (33) orthogonal experimental design was used to study the effects of different N, P and K ratios on the yield and quality of blueberry fruit, aiming to optimize the amount of supplied fertilizers. The results showed that N, P and K fertilizer had different effects on fruit yield and quality, among which K fertilizer was the most important factor. Fertilization could significantly improve the yield and fruit quality of blueberry, and the average yield of fertilization treatment was 37.78% higher than that of the control group (CK). Even the treatment with the worst results F6 (N2P3K1), its single fruit weight, anthocyanins, total phenols, soluble solids and soluble protein content were 1.09, 1.32, 1.23, 1.08 and 1.21 times higher than the control (CK), respectively. Based on the comprehensive evaluation of principal component analysis and multi factor analysis of variance, the best fertilization combination for high-yield and good-quality blueberries was N1P2K2 (F2), that is, the best fertilization effect was that including N 100 g/plant, P2O5 25 g/plant, K2O 25 g/plant, applied in the form of ammonium sulfate (472 g/plant), superphosphate (41 g/plant) and potassium sulfate (40 g/plant), respectively.


Asunto(s)
Arándanos Azules (Planta) , Arándanos Azules (Planta)/metabolismo , Frutas/metabolismo , Nitrógeno/metabolismo , Fósforo/metabolismo , Potasio/metabolismo , Fertilizantes/análisis , Antocianinas , Fertilización , Suelo , Agricultura/métodos
10.
Langenbecks Arch Surg ; 408(1): 21, 2023 Jan 13.
Artículo en Inglés | MEDLINE | ID: mdl-36635455

RESUMEN

OBJECTIVE: The effectiveness of adjuvant radioiodine (RAI) after reoperation in patients with persistent or recurrent differentiated thyroid cancer (DTC) is controversial. Although various organizations recognize that strong evidence for the use of RAI is lacking, they continue to recommend the use of adjuvant RAI therapy for select groups of patients. This is concerning as RAI therapy has potential side effects such as gastrointestinal symptoms, bone marrow suppression, and gonadal damage. METHODS: Four electronic databases were systematically searched for randomized trials or observational studies that examined the outcomes of adjuvant RAI after reoperation for recurrent DTC, among patients of any age. The baseline characteristics, treatment response, disease progression, and overall survival of these studies were synthesized and reported. A meta-analysis of the use of RAI on progression-free survival was also performed. RESULTS: Six observational studies, comprising a combined cohort of 437 patients who underwent reoperation, were included from 1212 records. Adjuvant RAI after reoperation in recurrent DTC was not associated with longer progression-free or overall survival. There was also no association of RAI with excellent structural or biochemical treatment response, lower thyroglobulin levels, nor a lower rate of second recurrence or distant metastases. CONCLUSIONS: Adjuvant RAI after reoperation in recurrent DTC was not associated with improved cancer or treatment-related outcomes. However, as the included studies were of inadequate quality, there is an urgent need for randomized trials and well-analyzed cohort studies. Physicians should exercise clinical judgment to prescribe adjuvant RAI for only selected, high-risk patients.


Asunto(s)
Adenocarcinoma , Neoplasias de la Tiroides , Humanos , Neoplasias de la Tiroides/radioterapia , Neoplasias de la Tiroides/cirugía , Neoplasias de la Tiroides/diagnóstico , Radioisótopos de Yodo/uso terapéutico , Reoperación , Recurrencia Local de Neoplasia/radioterapia , Recurrencia Local de Neoplasia/cirugía , Adenocarcinoma/cirugía , Estudios Retrospectivos , Tiroidectomía
11.
J Nat Prod ; 86(1): 232-236, 2023 01 27.
Artículo en Inglés | MEDLINE | ID: mdl-36651825

RESUMEN

Eugeniifoline (1), a pentacyclic indole alkaloid with a five-membered ring E, was isolated for the first time as a natural product from the stem-bark extract of Leuconotis eugeniifolia. Eugeniifoline (1) was previously reported as a synthetic product from a diversity-enhanced extract, but with the configuration at C-21 reported as S (1a). The configuration at C-21 was revised to R as shown in 1, based on the NOE data, GIAO NMR calculations, and DP4+ probability analysis, as well as the TDDFT-ECD method.


Asunto(s)
Apocynaceae , Alcaloides Indólicos , Apocynaceae/química , Alcaloides Indólicos/química , Estructura Molecular , Extractos Vegetales
12.
J Ethnopharmacol ; 303: 115954, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36435409

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: Diabetic ulcers (DUs) are one of the most severe complications of diabetes, and efficacious therapeutic means are currently lacking. Sheng-ji Hua-yu (SJHY) ointment is a classical Chinese traditional prescription that can significantly attenuate DU defects, but the specific mechanism remains to be fully elucidated. AIM OF THE STUDY: In order to verify the underlying mechanism of SJHY ointment in accelerating the closure of DUs. MATERIALS AND METHODS: Modular pharmacology and molecular docking were utilized to predict the therapeutic targets of SJHY ointment against DUs. Male db/db diabetic mice and HaCaT cell models induced by methylglyoxal were used to validate the findings. RESULTS: CCN1 was proven to be the core target of SJHY ointment involved in DUs treatment. CCN1 up-regulated by SJHY treatment (0.5 g/cm2/day) at the mRNA and protein levels was detected on Day9 after wounding. With CCN1 knockdown, accelerated cell proliferation, migration, and anti-inflammatory effect of SJHY treatment (10 mg/L) were reversed. CONCLUSIONS: SJHY ointment ameliorates cutaneous wound healing by up-regulating CCN1.


Asunto(s)
Diabetes Mellitus Experimental , Cicatrización de Heridas , Ratones , Animales , Masculino , Diabetes Mellitus Experimental/tratamiento farmacológico , Pomadas , Simulación del Acoplamiento Molecular
13.
Braz. J. Pharm. Sci. (Online) ; 59: e21182, 2023. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1429967

RESUMEN

Abstract Suanzaoren Decoction (SZRD) is an ancient prescription used in the treatment of insomnia. This study aimed to investigate the components and targets of SZRD in treating insomnia. First, the compounds of five herbs in SZRD were collected from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP), and the putative targets for treating insomnia were obtained from DrugBank to construct the herb-compound-target- disease network. A protein-protein interaction (PPI) network was constructed in the STRING database, and then Gene Ontology functional enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed to predict the mechanism of action of intersection target. Finally, 30 mice were divided into five groups: control, model, and quercetin groups (100, 50, 25 mg/kg). The sleep latency and duration of pentobarbital-induced sleeping were measured. The production of interleukin-6 (IL-6) and γ-aminobutyric acid (γ-GABA) was detected by using an enzyme-linked immunosorbent assay kit (ELISA), and Gamma-aminobutyric acid type a receptor subunit alpha1 (GABRA1) was tested by Reverse Transcription-Polymerase Chain Reaction (RT-PCR). A total of 152 active ingredients, including 80 putative targets of SZRD, were obtained. The main active compounds included quercetin and kaempferol, and the key targets involved IL-6 and nitric oxide synthase 3 (NOS3). The results of pathway enrichment analysis indicated that the putative targets of SZRD mainly participated in Neuroactive ligand-receptor interaction. The experiment of P-chlorophenylalanine (PCPA)-induced insomnia model showed that quercetin obviously shortened the sleep latency and prolonged the sleep duration of the insomnia model. The production of IL-6, γ-GABA, and GABRA1 mRNA was significantly increased in mice treated with quercetin. This study predicted the active ingredients and potential targets of SZRD on insomnia on the basis of a systematic network pharmacology approach and illustrated that SZRD might exert hypnotic effects via regulating IL-6, γ-GABA, and GABRA1


Asunto(s)
Animales , Masculino , Femenino , Ratas , Extractos Vegetales/farmacología , Trastornos del Inicio y del Mantenimiento del Sueño/clasificación , Pentobarbital/análisis , Quercetina/efectos adversos , Quempferoles/efectos adversos
14.
Ying Yong Sheng Tai Xue Bao ; 34(12): 3223-3231, 2023 Dec.
Artículo en Chino | MEDLINE | ID: mdl-38511360

RESUMEN

Analyzing the pattern of altitudinal variation in the leaf traits and their networks of a particular tree species of similar age and its influencing factors could contribute to understanding the impacts of environmental factors on leaf traits and excluding the interference of genetic factors. We investigated the stomatal, structural, chemical, and vein traits of Daphniphyllum macropodum leaves in middle-aged forests, following the altitudinal gradient (1100, 1500, and 1900 m) on Mao'er Mountain. The objectives of this study were to reveal patterns in leaf trait and leaf trait networks variation, the life strategy of the tree species, and the major environmental factors affecting the altitudinal variations. The results showed that leaf area, specific leaf area, leaf thickness, leaf dry matter content, chlorophyll content, nitrogen content, phosphorus content, C:N, C:P, vein density, and vein diameter varied significantly across altitudes. Mean annual temperature and total radiation explained 42.1% and 16.2% of leaf-trait variation, respectively. They served as key environmental factors driving the altitudinal variation in leaf traits. Mean annual temperature exhibited the greatest influence on leaf area (R2=0.73), and total radiation exerted the most prominent effect on leaf thickness (R2=0.72). Both relationships were significantly positive. D. macropodum exhibited low leaf nitrogen and phosphorus at the low altitude of 1100 m, and the overall and local trait networks were loose, adopting a conservative resource strategy. At the medium altitude of 1500 m, leaf nutrient contents were relatively high. The overall network of leaf traits was tightly connected and local network was loose. By enhancing the dependency among leaf traits, and improving phosphorus utilization efficiency, D. macropodum could cope with competition in deciduous forests and adopt resource acquisition strategies. Further, at the highest altitude of 1900 m, D. macropodum had relatively large leaf thickness, chlorophyll content, and leaf dry matter content, but relatively small leaf area. The local network connections were tight while the overall network looseness, indicating a resource conserving strategy. The trade-off relationship between C:P and leaf phosphorus content was closely related to phosphorus use efficiency, and its variation was an important indicator for identifying life strategies of D. macropodum in different altitudes.


Asunto(s)
Daphniphyllum , Árboles , China , Nitrógeno , Fósforo , Clorofila , Hojas de la Planta
15.
Int J Biol Macromol ; 220: 1454-1463, 2022 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-36122773

RESUMEN

The effects of dielectric-barrier discharge (DBD) plasma treatment (20 s to 120 s treatment time with 40 kV, 12 kHz) induced mild oxidation on the gelling properties, and related structural changes of glycinin were investigated. The gelling ability of glycinin was improved by the mild oxidation induced by the plasma treatment. Treated glycinin gels exhibited a continuous and uniform network microstructure. Samples treated for 120 s had a 2.07-, 3.99- and 2.03-fold increase in hardness, chewiness, and resilience compared to the 20 s treated samples. Structural analyses showed that primary and secondary structures of glycinin were unaffected. The tertiary structure was shifted, accompanied by a decrease in free sulfhydryl (-SH) content. At the same time, carbonyl content and average particle diameter were increased by DBD treatment. The DBD treatment facilitated the generation/exchange of intermolecular disulfide bonds and enhanced gelling properties of glycinin. It is concluded that controlled plasma-induced protein oxidation can improve protein functionality.


Asunto(s)
Globulinas , Disulfuros/química , Geles , Globulinas/química , Proteínas de Soja/química
16.
BMC Med Educ ; 22(1): 650, 2022 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-36038850

RESUMEN

PURPOSE: Personality traits often have an impact on the way individuals relate to each other as colleagues and the patients we treat. It is often perceived that distinct personality exist between different specialties and may help predict success during one's training and career. METHODS: Objective of the study was to compare the personality between surgical and medical residents. Thirty-five medical residents and 35 surgical residents completed the Revised NEO Personality Inventory, a validated measure of personality traits. A score was generated for each of the 5 major character traits namely: neuroticism(N), extraversion(E), openness(O), conscientiousness(C), agreeableness(A). Each of these traits were subdivided into 6 component facets. This was compared with sociodemographic characteristics. RESULTS: Medical residents displayed higher scores in the area of overall Agreeableness, with a mean score of 47.4 vs 40.5. Within Agreeableness facets, medical residents also displayed higher scores of straightforwardness, altruism and modesty. Surgical residents displayed higher scores in terms of overall Extraversion (52.4 vs 45.4). Within the Extraversion facets, surgical residents were also more assertive and excitement-seeking. There was no difference in the overall neuroticism domain; however, within the neuroticism facets, surgical residents had statistically higher mean scores in angry hostility and impulsiveness. Gender stratification did not result in any statistically significant difference. CONCLUSION: There are fundamental differences between personalities of medical and surgical residents. Detailed analysis of each individual's data could be useful, with proper assistance and coaching, for residents in learning more about their personalities and how these impact their clinical practice. This can be beneficial in future career counselling and the development of a more holistic medical practitioner.


Asunto(s)
Internado y Residencia , Extraversión Psicológica , Humanos , Medicina Interna , Personalidad , Inventario de Personalidad
17.
Front Endocrinol (Lausanne) ; 13: 885039, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35937847

RESUMEN

Recent studies have revealed the pivotal role of gut microbiota in the progress of liver diseases including non-alcoholic steatohepatitis (NASH). Many natural herbs, such as Gynostemma pentaphyllum (GP), have been extensively applied in the prevention of NASH, while the bioactive components and underlying mechanism remain unclear. The aim of this study was to investigate whether the polysaccharides of GP (GPP) have a protective effect on NASH and to explore the potential mechanism underlying these effects. C57BL/6 male mice were fed with a methionine-choline-deficient (MCD) diet for 4 weeks to induce NASH and administered daily oral gavage of sodium carboxymethylcellulose (CMC-Na), low dose of GPP (LGPP), high dose of GPP (HGPP), and polyene phosphatidylcholine capsules (PPC), compared with the methionine-choline-sufficient (MCS) group. Our results showed that the symptoms of hepatic steatosis, hepatocyte ballooning, liver fibrosis, and oxidative stress could be partially recovered through the intervention of GPP with a dose-dependent effect. Furthermore, gut microbiome sequencing revealed that HGPP altered the composition of gut microbiota, mainly characterized by the enrichment of genera including Akkermansia, Lactobacillus, and A2. Moreover, hepatic transcriptome analysis indicated that the anti-inflammatory effect of HGPP might be associated with toll-like receptor (TLR) and nod-like receptor (NLR) signaling pathways. HGPP could inhibit the expression of TLR2 and downregulate the expression of the NLRP3 inflammasome, as well as the pro-inflammatory cytokine tumor necrosis factor (TNF)-α and interleukin (IL)-1ß. In summary, GPP could ameliorate NASH possibly mediated via the modulation of gut microbiota and the TLR2/NLRP3 signaling pathway, indicating that GPP could be tested as a prebiotic agent in the prevention of NASH.


Asunto(s)
Microbioma Gastrointestinal , Enfermedad del Hígado Graso no Alcohólico , Animales , Colina/farmacología , Colina/uso terapéutico , Gynostemma/metabolismo , Masculino , Metionina , Ratones , Ratones Endogámicos C57BL , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Enfermedad del Hígado Graso no Alcohólico/tratamiento farmacológico , Enfermedad del Hígado Graso no Alcohólico/etiología , Enfermedad del Hígado Graso no Alcohólico/metabolismo , Polisacáridos/farmacología , Polisacáridos/uso terapéutico , Receptor Toll-Like 2/genética
18.
Cell Biochem Biophys ; 80(3): 579-589, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35907080

RESUMEN

It was the aim of this study to determine whether abdominal massage reverses high-fat diet-induced insulin resistance compared with RSV treatment. A total of sixty male Sprague-Dawley rats were randomly placed in one of four groups:the non-fat diet (NFD), the high-fat diet (HFD), the HFD with abdominal massage (HFD+ AM), and the HFD plus resveratrol (HFD+ RSV). For eight weeks, rats were fed high-fat diets to create insulin resistance, followed by six weeks of either AM or RSV. Molecular mechanisms of adipogenesis and cytokine production in rats with high-fat diets were investigated. The model rat adipose tissue showed significant improvements in obesity, glucose intolerance, and the accumulation of lipid in the body [the total cholesterol level (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C)], metabolic effects of glucose [The fasting blood glucose (FBG), Fasting insulin levels (FINS)], inflammatory status [interleukin-6 (IL-6) and tumor necrosis factor (TNF)-α, C-reactive protein (CRP)], and macrophage polarization after AM or RSV treatment. Further, AM increased SIRT1/NF-κB signaling in rat adipose tissue. Accordingly, in rat adipose tissue, our results indicate that AM regulates the secretion of proinflammatory cytokines, blood sugar levels, and related signaling pathways, contributing to improvement of IR, which may serves as a new therapeutic approach for the treatment for IR.


Asunto(s)
Resistencia a la Insulina , Insulina , Tejido Adiposo/patología , Animales , Proteína C-Reactiva/metabolismo , Colesterol/metabolismo , Dieta Alta en Grasa/efectos adversos , Inflamación/tratamiento farmacológico , Inflamación/metabolismo , Masculino , Masaje , FN-kappa B/metabolismo , Ratas , Ratas Sprague-Dawley , Sirtuina 1/metabolismo , Sirtuina 1/farmacología , Sirtuina 1/uso terapéutico , Factor de Necrosis Tumoral alfa/metabolismo
19.
Phytomedicine ; 103: 154208, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35691078

RESUMEN

BACKGROUND: Nonalcoholic steatohepatitis (NASH) has been linked to inflammation induced by intestinal microbiota. Poria cocos polysaccharides (PCP) possesses anti-inflammation and immunomodulation functions; however, its preventive effects against NASH and potential mechanisms need to be explored. METHODS: The composition of PCP was determined using ion chromatography. C57BL/6 mice were administered the methionine and choline deficient (MCD) diet for 4 weeks to establish the NASH model or methionine-choline-sufficient (MCS) diet to serve as the control. Mice were assigned to the MCS group, MCD group, low-dose PCP (LP) group, and high-dose PCP (HP) group, and were administered the corresponding medications via gavage. Serum biochemical index analysis and liver histopathology examination were performed to verify the successful establishment of NASH model and to evaluate the efficacy of PCP. The composition of intestinal bacteria was profiled through 16S rRNA gene sequencing. Hepatic RNA sequencing (RNA-Seq) was performed to explore the potential mechanisms, which were further confirmed using qPCR, western blot, and immunohistochemistry. RESULTS: PCP consists of glucose, galactose, mannose, D-glucosamine hydrochloride, xylose, arabinose, and fucose. PCP could significantly alleviate symptoms of NASH, including histological liver damage, impaired hepatic function, and increased oxidative stress. Meanwhile, HP could reshape the composition of intestinal bacteria by significantly increasing the relative abundance of Faecalibaculum and decreasing the level of endotoxin load derived from gut bacteria. PCP could also downregulate the expression of pathways associated with immunity and inflammation, including the chemokine signaling pathway, Toll-like receptor signaling pathway, and NF-kappa B signaling pathway. The expression levels of CCL3 and CCR1 (involved in the chemokine signaling pathway), Tlr4, Cd11b, and NF-κb (involved in the NF-kappa B signaling pathway), and Tnf-α (involved in the TNF signaling pathway) were significantly reduced in the HP group compared to the MCD group. CONCLUSIONS: PCP could prevent the development of NASH, which may be associated with the modulation of intestinal microbiota and the downregulation of the NF-κB/CCL3/CCR1 axis.


Asunto(s)
Microbioma Gastrointestinal , Enfermedad del Hígado Graso no Alcohólico , Wolfiporia , Animales , Quimiocina CCL3/farmacología , Quimiocina CCL3/uso terapéutico , Quimiocinas , Colina/farmacología , Colina/uso terapéutico , Microbioma Gastrointestinal/genética , Inflamación/metabolismo , Hígado , Metionina/farmacología , Metionina/uso terapéutico , Ratones , Ratones Endogámicos C57BL , FN-kappa B/metabolismo , Enfermedad del Hígado Graso no Alcohólico/tratamiento farmacológico , Enfermedad del Hígado Graso no Alcohólico/metabolismo , Polisacáridos/farmacología , Polisacáridos/uso terapéutico , ARN Ribosómico 16S , Receptores CCR1
20.
Sleep Med ; 96: 93-98, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35617716

RESUMEN

OBJECTIVES AND BACKGROUND: Children with cerebral palsy are at risk for sleep disorders, and there is a complex relationship between sleep and physical, environmental and functional factors in such children. The WHO International Classification of Functioning, Disability and Health model serves as a universal framework for describing and organizing functioning and disability. This study aimed to describe sleep disturbances in Singaporean children and youth with cerebral palsy, and develop a holistic framework for evaluating risk factors and potential management strategies for poor sleep. METHODS: A cross-sectional analysis was conducted on 151 children and youth in a nationwide registry for cerebral palsy. The WHO International Classification of Functioning, Disability and Health for Cerebral Palsy Questionnaire was used to identify sleep disturbances. Risk factors analyzed were age, gender, ethnic background, financial assistance, the dominant motor feature of cerebral palsy, functional status, and comorbidities such as active epilepsy, hearing and visual impairments, generalized pain, muscle tone and involuntary contractions. RESULTS: 46% had difficulty with sleep, with similar proportions having difficulty with amount, onset, maintenance and quality of sleep. On multivariate regression analysis, higher functional gross motor impairment as indicated by a GMFCS level of V (adjusted OR 4.24; 95% CI 1.09-19.0) and difficulty with involuntary contractions (aOR 2.80; 1.20-6.71) were significant factors for sleep difficulties. CONCLUSION: An ICF-based framework was useful in identifying possible contributory factors and strategies for managing poor sleep. Further studies with objective sleep measures would allow for better characterization of sleep disturbances in children and youth with cerebral palsy, and guide management.


Asunto(s)
Parálisis Cerebral , Trastornos del Sueño-Vigilia , Adolescente , Parálisis Cerebral/epidemiología , Niño , Estudios Transversales , Evaluación de la Discapacidad , Humanos , Factores de Riesgo , Sueño , Trastornos del Sueño-Vigilia/epidemiología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA