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1.
World Allergy Organ J ; 17(8): 100935, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39156598

RESUMO

Drug reaction with eosinophilia and systemic symptoms (DRESS), also known as drug-induced hypersensitivity syndrome (DiHS), is a severe type of cutaneous adverse reaction. The gold standard therapy for DRESS involves the discontinuation of the culprit drug, supportive therapies, and administration of corticosteroids. However, in cases of primary treatment failure or suboptimal response, there arises an urgent need for alternative interventions. This review focuses on exploring alternative systemic therapies for patients with steroid-resistant DRESS, steroid-dependent DRESS, or refractory DRESS, encompassing immunosuppressive agents, intravenous immunoglobulin, plasmapheresis, biologics, and small molecule drugs, with an emphasis on their clinical efficacy and the underlying mechanisms in the treatment of DRESS. Furthermore, this review provides a summary of potential management strategies and laboratory workup during the treatment of DRESS.

2.
Anal Methods ; 2024 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-39188130

RESUMO

Residual adipic dihydrazide (ADH) in textiles may react with formaldehyde to form hydrazone, which is a source of the formaldehyde pollutant indoors. In this paper, a xanthylium-based ratiometric fluorescent probe SH-Py was developed for ADH detection. The emission of SH-Py at 680 nm decreased, whereas that at 463 nm increased upon the addition of ADH in pure DMSO. The LOD was as low as 24.5 nM, and the possible sensing mechanism is presented. Good recoveries were observed in the standard recovery experiments of SH-Py for ADH detection in textiles. Moreover, the visualization of ADH in textiles was successfully achieved by spraying the probe solution and then inspecting it under a UV lamp. Additionally, SH-Py has the potential to quantify other aliphatic hydrazides in various samples.

3.
Aesthetic Plast Surg ; 2024 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-39164529

RESUMO

The chief objective of this paper is to respond to the comment regarding "Static and Dynamic Filler-Associated Tear Trough Deformities: Manifestations and Treatment Algorithm" and to provide further explanation on the surgical details discussed therein. For patients undergoing transcutaneous approaches, if there are significant lower eyelid laxity and poor skin elasticity, we recommend lateral canthopexy to reduce postoperative ectropion and enhance midface suspension. For patients undergoing transconjunctival approaches, although mainstream techniques suggest no need for conjunctival suturing, we believe that in the absence of more evidence-based medicine, both suture and sutureless are acceptable.Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

4.
Anal Chim Acta ; 1321: 343041, 2024 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-39155098

RESUMO

Rapid DNA detection is a long-pursuing goal in molecular detection, especially in combating infectious diseases. Loop-mediated isothermal amplification (LAMP) is a robust and prevailing DNA detection method in pathogen detection, which has been drawing broad interest in improving its performance. Herein, we reported a new strategy and developed a new LAMP variant named TLAMP with a superior amplification rate. In this strategy, the turn-back loop primers (TLPs) were devised by ingeniously extending the 5' end of the original loop primer, which conferred the new role of being the inner primer for TLPs while retaining its original function as the loop primer. In theory, based on the bifunctional TLPs, a total of eight basic dumbbell-like structures and four cyclic amplification pathways were produced to significantly enhance the amplification efficiency of TLAMP. With the enhancing effect of TLPs, TLAMP exhibited a significantly reduced amplification-to-result time compared to the conventional six-primer LAMP (typically 1 h), enabling rapid DNA detection within 20 min. Furthermore, TLAMP proved to be about 10 min faster than the fast LAMP variants reported so far, while still presenting comparable sensitivity and higher repeatability. Finally, TLAMP successfully achieved an ultrafast diagnosis of Monkeypox virus (MPXV), capable of detecting as few as 10 copies (0.67copies/µL) of pseudovirus within 20 min using real-time fluorescence assay or within 30 min using a colorimetric assay, suggesting that the proposed TLAMP offers a sensitive, specific, reliable, and, most importantly, ultrafast DNA detection method when facing the challenges posed by infectious diseases.


Assuntos
Primers do DNA , Técnicas de Amplificação de Ácido Nucleico , Técnicas de Amplificação de Ácido Nucleico/métodos , Primers do DNA/química , Primers do DNA/metabolismo , DNA Viral/análise , DNA Viral/genética , DNA/química , DNA/genética , Técnicas de Diagnóstico Molecular/métodos , Limite de Detecção
5.
Sheng Wu Gong Cheng Xue Bao ; 40(7): 2308-2321, 2024 Jul 25.
Artigo em Chinês | MEDLINE | ID: mdl-39044593

RESUMO

This study aims to explore the roles of three estrogen receptors (Esr1, Esr2, and Gper1) in early differentiation of embryonic gonads of Trachemys scripta. The expression characteristics of the receptor genes were studied first. The Esr1, Esr2, and Gper1 agonists PPT, WAY 200070, and G-1 were respectively injected into the embryos at the male-producing temperature (MPT) before initiation of gonadal differentiation. The sex reversal of the treated embryonic gonads was analyzed in terms of morphological structure of gonads, distribution pattern of germ cells, and expression of key genes and proteins involved in sex differentiation. The expression level of esr1 during the critical stage of sex differentiation was higher than those of esr2 and gper1 (very low expression) and was particularly high in the gonads at the female-producing temperature (FPT). After treatment with PPT, the MPT gonads presented obviously feminized morphology and structure, with the germ cells exhibiting a female distribution pattern. Furthermore, the mRNA expression levels of the key genes (dmrt1, amh, and sox9) for male differentiation were down-regulated significantly, while those of the key genes (foxl2 and cyp19a1) for female differentiation were up-regulated observably. The fluorescent signals of Amh and Sox9 expression almost disappeared, while Foxl2 and Arom were activated to express abundantly, which fully demonstrated the sex reversal of the gonads from male to female (sex reversal rate: 70.27%). However, the MPT gonads treated with WAY 200070 and G-1 still differentiated into testes, and the expression patterns of the key genes and proteins were similar to those in male gonads. The above results demonstrate that activation of Esr1 alone can fully initiate the early female differentiation process of gonads, suggesting that estrogen may induce early ovarian differentiation via Esr1 in Trachemys scripta. The findings provide a basis for further revealing the mechanisms of estrogen regulation in sex determination and differentiation of turtles.


Assuntos
Receptor alfa de Estrogênio , Ovário , Diferenciação Sexual , Tartarugas , Animais , Feminino , Diferenciação Sexual/genética , Ovário/metabolismo , Ovário/crescimento & desenvolvimento , Receptor alfa de Estrogênio/genética , Receptor alfa de Estrogênio/metabolismo , Masculino , Tartarugas/genética , Receptores de Estrogênio/metabolismo , Receptores de Estrogênio/genética , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos
6.
Aesthetic Plast Surg ; 48(14): 2642-2650, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38727846

RESUMO

BACKGROUND: Fillers are popular substances for the correction of tear trough deformity. Despite well-documented complications increasing gradually, standardized treatment algorithm for deformity secondary to improper injection is still limited. METHODS: Between April 2020 and April 2023, a total of 22 patients with filler-associated tear trough deformity with static bulges or dynamic swells after injection of tear trough were enrolled. For patients who received hyaluronic acid (HA) and unknown fillers, hyaluronidase dissolution was performed. For patients who received non-HA fillers and unknown fillers that failed to dissolve, a magnetic resonance imaging (MRI) examination was conducted. Surgical approaches were selected based on the filler distribution and the condition of the lower eyelid. Ligament releasement and fat transposition were accomplished when fillers were excised. Aesthetic outcomes were evaluated by double-blind examiners using the Global Aesthetic Improvement Scale after patients were followed up. RESULTS: In total, the study included 3 patients with simple static deformities, 1 patient with simple dynamic, and 18 patients with both. Fourteen patients underwent transconjunctival surgery and 8 patients underwent transcutaneous surgery, among which 18 patients underwent hyaluronidase dissolution and 8 patients underwent MRI prior to surgery. A total of 4 patients with self-limited complications recovered after conservative treatment. 90.9% of patients expressed satisfaction or high satisfaction with the treatment results. CONCLUSION: Filler-associated tear trough deformities could be classified into static and dynamic deformities, which could appear separately or simultaneously. Treatment of deformities should be based on characteristics of fillers, in which MRI could serve as a promising tool. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.


Assuntos
Algoritmos , Preenchedores Dérmicos , Ácido Hialurônico , Humanos , Preenchedores Dérmicos/efeitos adversos , Feminino , Adulto , Ácido Hialurônico/efeitos adversos , Ácido Hialurônico/administração & dosagem , Pessoa de Meia-Idade , Masculino , Estética , Estudos Retrospectivos , Resultado do Tratamento , Blefaroplastia/métodos , Blefaroplastia/efeitos adversos , Hialuronoglucosaminidase/administração & dosagem , Técnicas Cosméticas/efeitos adversos
7.
Food Chem ; 452: 139547, 2024 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-38728893

RESUMO

Dithionite remained in the foodstuff may pose a great threat to the health of consumers. Three xanthylium-based probes were synthesized and their responses to dithionite were explored. Probe SH-1 could respond to dithionite selectively in PBS buffer (15% DMSO, 10 mM, pH = 7.4). Upon the addition of dithionite, the fluorescent emission of SH-1 at 684 nm dropped quickly (within 10 s) and the fluorescence decline was proportional to the concentration of dithionite (0-7.0 µM). The limit of detection was determined to be 0.139 µM. Then, the sensing mechanism was tentatively presented and the structure of resulted adduct (SH-1-SO3-) which was the reaction product of SH-1 and dithionite via a Micheal addition reaction followed by an oxidation reaction was verified. Moreover, white granulated sugar was subjected to the standard spike experiments and the results demonstrated a great potential of SH-1 for the quantitative monitoring of dithionite in foodstuffs.


Assuntos
Ditionita , Corantes Fluorescentes , Corantes Fluorescentes/química , Ditionita/química , Espectrometria de Fluorescência , Contaminação de Alimentos/análise , Limite de Detecção , Açúcares/química , Açúcares/análise
9.
Asian J Surg ; 47(5): 2200-2205, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38443253

RESUMO

BACKGROUND: Labiaplasty is one of the top cosmetic procedures patients are seeking in the past two years. However, treatment of disease in posterior fourchette caused by various etiological factors was less investigated and neglected. METHODS: Three types of posterior fourchette deformity were proposed: (1) Redundant posterior fourchette, (2) Relaxed posterior fourchette, and (3) Constricted posterior fourchette. Local flap transfer technique was applied. Y-V-plasty and 5-Z-Flap-plasty were used to treat web type and tight type of the constricted posterior fourchette, respectively. Follow-ups were arranged on the Internet or at the outpatient clinic. Visual analogue scale (VAS) was utilized to evaluate sexual discomfort in the satisfaction questionnaires during follow-up. RESULTS: A total of 48 patients with constricted posterior fourchette deformity from May 2022 to May 2023 were reviewed in the study. Y-V-plasty could decrease VAS in patients with web-type deformity by 4.13 ± 1.46 (p<0.001). 5-Z-Flap-plasty could decrease VAS in patients with tight-type deformity by 3.76 ± 1.53 (p<0.05). Satisfaction rates of the web type and tight type were 93.1% (27/29) and 86.7% (13/15) respectively. Complications include two cases of hematoma, one case of persistent pain and two cases of dehiscence. CONCLUSION: Constricted posterior fourchette seriously affects the quality of life. Y-V-plasty and 5-Z-Flap-plasty can be utilized to treat the two subtypes of constricted posterior fourchette, which can effectively reduce the pain score of patients with high satisfaction and few long-term complications.


Assuntos
Satisfação do Paciente , Procedimentos de Cirurgia Plástica , Retalhos Cirúrgicos , Vulva , Humanos , Feminino , Adulto , Vulva/cirurgia , Vulva/anormalidades , Procedimentos de Cirurgia Plástica/métodos , Resultado do Tratamento , Pessoa de Meia-Idade , Seguimentos , Adulto Jovem , Procedimentos Cirúrgicos em Ginecologia/métodos
11.
Neural Comput ; 36(3): 475-498, 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38363659

RESUMO

Recently, deep learning surrogates and neural operators have shown promise in solving partial differential equations  (PDEs). However, they often require a large amount of training data and are limited to bounded domains. In this work, we present a novel physics-informed neural operator method to solve parameterized boundary value problems without labeled data. By reformulating the PDEs into boundary integral equations (BIEs), we can train the operator network solely on the boundary of the domain. This approach reduces the number of required sample points from O(Nd) to O(Nd-1), where d is the domain's dimension, leading to a significant acceleration of the training process. Additionally, our method can handle unbounded problems, which are unattainable for existing physics-informed neural networks (PINNs) and neural operators. Our numerical experiments show the effectiveness of parameterized complex geometries and unbounded problems.

12.
Org Biomol Chem ; 22(2): 348-352, 2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-38086690

RESUMO

Sulfinamides are a versatile class of compounds that find applications in both organic synthesis and pharmaceuticals. Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. Commercially available potassium trifluoro(organo)borates and readily available sulfinyl amines are rationally used and converted to a series of alkyl or aryl sulfinamides in moderate to high yields. The reaction allows for the gram-scale preparation of sulfinamides. Moreover, sulfonimidamides, sulfonimidate esters and sulfonyl amides could be obtained in one pot.

13.
BMJ Open ; 13(11): e070827, 2023 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-37967998

RESUMO

BACKGROUND: Emergency percutaneous coronary intervention (PCI) can quickly restore myocardial perfusion after acute coronary syndrome. Whether and which lipid-lowering regimens are effective in reducing major adverse cardiovascular events (MACEs) and mortality risk after PCI remain unclear. OBJECTIVE: This study assessed the benefits of different lipid-lowering regimens on the risk of MACEs and mortality in the post-PCI population by network meta-analysis. METHODS: Public databases, including PubMed, Embase and the Cochrane Library, were searched from inception to August 2022. Randomised controlled trials (RCTs) on lipid-lowering regimens in post-PCI populations were included and analysed. The outcomes were the incidence of all-cause mortality and MACEs, whether reported as dichotomous variables or as HRs. RESULTS: Thirty-nine RCTs were included. For MACEs, alirocumab plus rosuvastatin (OR: 0.18; 95% CI: 0.07 to 0.44), evolocumab plus ezetimibe and statins (OR: 0.19; 95% CI: 0.06 to 0.59), eicosapentaenoic acid (EPA) plus pitavastatin (HR: 0.67; 95% CI: 0.49 to 0.96) and icosapent ethyl plus statins (HR: 0.73; 95% CI: 0.62 to 0.86) had significant advantages and relatively high rankings. For mortality, rosuvastatin (OR: 0.30; 95% CI: 0.11 to 0.84), ezetimibe plus statins (OR: 0.55; 95% CI: 0.43 to 0.89) and icosapent ethyl plus statins (OR: 0.66; 95% CI: 0.45 to 0.96) had significant advantages compared with the control. CONCLUSION: EPA, especially icosapent ethyl, plus statins had a beneficial effect on reducing the risk of MACEs and mortality in post-PCI patients. Proprotein convertase subtilisin/kexin type-9 inhibitors plus statins were able to reduce the risk of MACEs, but the risk of mortality remained unclear. PROSPERO REGISTRATION NUMBER: CRD42018099600.


Assuntos
Síndrome Coronariana Aguda , Inibidores de Hidroximetilglutaril-CoA Redutases , Intervenção Coronária Percutânea , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Rosuvastatina Cálcica , Metanálise em Rede , Ezetimiba , Síndrome Coronariana Aguda/tratamento farmacológico , Síndrome Coronariana Aguda/cirurgia , Lipídeos
14.
Sci Bull (Beijing) ; 68(24): 3120-3123, 2023 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-38007329
15.
BMC Med Genomics ; 16(1): 269, 2023 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-37904220

RESUMO

Schistosoma japonicum infection is an important public health problem and the S. japonicum infection is associated with a variety of diseases, including colorectal cancer. We collected the paraffin samples of CRC patients with or without S. japonicum infection according to standard procedures. Data-Independent Acquisition was used to identify differentially expressed proteins (DEPs), protein-protein interaction (PPI) network construction, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) functional enrichment analysis and machine learning algorithms (least absolute shrinkage and selection operator (LASSO) regression) were used to identify candidate genes for diagnosing CRC with S. japonicum infection. To assess the diagnostic value, the nomogram and receiver operating characteristic (ROC) curve were developed. A total of 115 DEPs were screened, the DEPs that were discovered were mostly related with biological process in generation of precursor metabolites and energy,energy derivation by oxidation of organic compounds, carboxylic acid metabolic process, oxoacid metabolic process, cellular respiration aerobic respiration according to the analyses. Enrichment analysis showed that these compounds might regulate oxidoreductase activity, transporter activity, transmembrane transporter activity, ion transmembrane transporter activity and inorganic molecular entity transmembrane transporter activity. Following the development of PPI network and LASSO, 13 genes (hsd17b4, h2ac4, hla-c, pc, epx, rpia, tor1aip1, mindy1, dpysl5, nucks1, cnot2, ndufa13 and dnm3) were filtered, and 3 candidate hub genes were chosen for nomogram building and diagnostic value evaluation after machine learning. The nomogram and all 3 candidate hub genes (hsd17b4, rpia and cnot2) had high diagnostic values (area under the curve is 0.9556). The results of our study indicate that the combination of hsd17b4, rpia, and cnot2 may become a predictive model for the occurrence of CRC in combination with S. japonicum infection. This study also provides new clues for the mechanism research of S. japonicum infection and CRC.


Assuntos
Coinfecção , Neoplasias Colorretais , Schistosoma japonicum , Esquistossomose Japônica , Humanos , Animais , Proteômica , Biologia Computacional , Aprendizado de Máquina , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/genética
16.
JAMA Netw Open ; 6(10): e2338174, 2023 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-37851443

RESUMO

Importance: Mental disorders among children and adolescents are global health concerns. Published studies have provided discordant results regarding treatment rates for mental disorders among youths. Objective: To estimate combined treatment rates for several common psychiatric disorders among children and adolescents. Data Sources: PubMed, Web of Science, PsycINFO, Scopus, and Embase were searched from database inception until September 23, 2022, and supplemented with hand-searching of reference lists. Study Selection: Included studies were those that used validated methods to report treatment rates for any mental disorder, depressive disorders, anxiety disorders, attention-deficit/hyperactivity disorder (ADHD), and behavior disorders among children and adolescents. Data Extraction and Synthesis: This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guideline. Two reviewers independently assessed study eligibility, extracted data, and scored quality. Studies with a Joanna Briggs Institute score of 5 or more were included in the meta-analysis. Treatment rates were pooled using random-effects models. Subgroup analyses were performed to investigate the association with treatment rates of factors, such as year of data collection, World Health Organization region, age, income level, timeframe of diagnosis, informant source, service type, sample origin, and internalizing or externalizing disorder. Main Outcomes and Measures: Treatment rates for mental disorders among children and adolescents were the main outcomes, measured as percentage estimates. Results: Forty studies were included in the analysis, comprising 310 584 children and adolescents, with boys accounting for 39% of participants (sex was not reported in 10 studies). The pooled treatment rate was 38% (95% CI, 30%-45%) for any mental disorder, 36% (95% CI, 29%-43%) for depressive disorders, 31% (95% CI, 21%-42%) for anxiety disorders, 58% (95% CI, 42%-73%) for ADHD, and 49% (95% CI, 35%-64%) for behavior disorders. Age, income level, and region were significantly associated with the combined treatment rates of mental disorders in children and adolescents. The treatment rate for depressive disorders was higher among adolescents than children (36% [95% CI, 25%-46%] vs 11% [95% CI, 0%-25%]), whereas the treatment rate for anxiety disorders was higher among children than adolescents (64% [95% CI, 52%-75%] vs 20% [95% CI, 9%-30%]). The treatment rate for any mental disorder in lower-middle income countries was 6% (95% CI, 2%-14%), in upper-middle income countries was 24% (95% CI, 2%-47%), and in high-income countries was 43% (95% CI, 35%-52%). For depressive disorders, treatment rates were higher in the Americas (40% [95% CI, 30%-51%]) than in Europe (28% [95% CI, 13%-43%]) and the Western Pacific region (6% [95% CI, 1%-16%]). Conclusions and Relevance: This study suggests that, in general, the treatment rates for mental disorders among children and adolescents were low, especially for depression and anxiety. Targeted intervention policies and effective measures should be designed and implemented to improve treatment rates of psychiatric disorders among youths.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade , Transtorno da Conduta , Masculino , Adolescente , Criança , Humanos , Transtornos de Ansiedade , Ansiedade/terapia , Transtorno do Deficit de Atenção com Hiperatividade/epidemiologia , Transtorno do Deficit de Atenção com Hiperatividade/terapia , Terapia Combinada
17.
BMC Microbiol ; 23(1): 293, 2023 10 17.
Artigo em Inglês | MEDLINE | ID: mdl-37845623

RESUMO

BACKGROUND: A high concentration of CO2 will stagnate the development of the newly formed primordia of Hypsizygus marmoreus, hinder the development of the mushroom cap, thereby inhibiting the normal differentiation of the fruiting body. Moreover, in the previous experiment, our research group obtained the mutant strain HY68 of H. marmoreus, which can maintain normal fruiting under the condition of high concentration of CO2. Our study aimed to evaluate the CO2 tolerance ability of the mutant strain HY68, in comparison with the starting strain HY61 and the control strain HY62. We analyzed the mycelial growth of these strains under various conditions, including different temperatures, pH levels, carbon sources, and nitrogen sources, and measured the activity of the cellulose enzyme. Additionally, we identified and predicted ß-glucosidase-related genes in HY68 and analyzed their gene and protein structures. RESULTS: Our results indicate that HY68 showed superior CO2 tolerance compared to the other strains tested, with an optimal growth temperature of 25 °C and pH of 7, and maltose and beef paste as the ideal carbon and nitrogen sources, respectively. Enzyme activity assays revealed a positive correlation between ß-glucosidase activity and CO2 tolerance, with Gene14147 identified as the most closely related gene to this activity. Inbred strains of HY68 showed trait segregation for CO2 tolerance. CONCLUSIONS: Both HY68 and its self-bred offspring could tolerate CO2 stress. The fruiting period of the strains resistant to CO2 stress was shorter than that of the strains not tolerant to CO2 stress. The activity of ß-GC and the ability to tolerate CO2 were more closely related to the growth efficiency of fruiting bodies. This study lays the foundation for understanding how CO2 regulates the growth of edible fungi, which is conducive to the innovation of edible fungus breeding methods. The application of the new strain HY68 is beneficial to the research of energy-saving production in factory cultivation.


Assuntos
Agaricales , Ascomicetos , Celulases , Animais , Bovinos , Carpóforos , Dióxido de Carbono/metabolismo , Melhoramento Vegetal , Nitrogênio/metabolismo , Carbono/metabolismo , Celulases/análise , Celulases/metabolismo
18.
Zhongguo Zhong Yao Za Zhi ; 48(17): 4675-4685, 2023 Sep.
Artigo em Chinês | MEDLINE | ID: mdl-37802806

RESUMO

The Compound Cheqian Tablets are derived from Cheqian Power in Comprehensive Recording of Divine Assistance, and they are made by modern technology with the combination of Plantago asiatica and Coptis chinensis. To investigate the material basis of Compound Cheqian Tablets in the treatment of diabetic nephropathy, in this study, the chemical components of Compound Cheqian Tablets were characterized and analyzed by UPLC-Q-TOF-MS/MS, and a total of 48 chemical components were identified. The identified chemical compounds were analyzed by network pharmacology. By validating with previous literature, six bioactive compounds including acteoside, isoacteoside, coptisine, magnoflorine, palmatine, and berberine were confirmed as the index components for qua-lity evaluation. Furthermore, the content of the six components in the Compound Cheqian Tablets was determined by the "double external standards" quantitative analysis of multi-components by single marker(QAMS), and the relative correction factor of isoacteoside was calculated as 1.118 by using acteoside as the control; the relative correction factors of magnoflorine, palmatine, and berberine were calculated as 0.729, 1.065, and 1.126, respectively, by using coptisine as the control, indicating that the established method had excellent stability under different conditions. The results obtained by the "double external standards" QAMS approximated those obtained by the external standard method. This study qualitatively characterized the chemical components in the Compound Cheqian Tablets by applying UPLC-Q-TOF-MS/MS and screened the pharmacodynamic substance basis for the treatment of diabetic nephropathy via network pharmacology, and primary pharmacodynamic substance groups were quantitatively analyzed by the "double external stan-dards" QAMS method, which provided a scientific basis for clarifying the pharmacodynamic substance basis and quality control of Compound Cheqian Tablets.


Assuntos
Berberina , Nefropatias Diabéticas , Medicamentos de Ervas Chinesas , Humanos , Espectrometria de Massas em Tandem , Berberina/farmacologia , Cromatografia Líquida de Alta Pressão/métodos , Farmacologia em Rede , Medicamentos de Ervas Chinesas/química , Controle de Qualidade , Comprimidos
19.
Front Plant Sci ; 14: 1184352, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37546273

RESUMO

In orchard scenes, the complex terrain environment will affect the operational safety of mowing robots. For this reason, this paper proposes an improved local path planning algorithm for an artificial potential field, which introduces the scope of an elliptic repulsion potential field as the boundary potential field. The potential field function adopts an improved variable polynomial and adds a distance factor, which effectively solves the problems of unreachable targets and local minima. In addition, the scope of the repulsion potential field is changed to an ellipse, and a fruit tree boundary potential field is added, which effectively reduces the environmental potential field complexity, enables the robot to avoid obstacles in advance without crossing the fruit tree boundary, and improves the safety of the robot when working independently. The path length planned by the improved algorithm is 6.78% shorter than that of the traditional artificial potential method, The experimental results show that the path planned using the improved algorithm is shorter, smoother and has good obstacle avoidance ability.

20.
Phys Chem Chem Phys ; 25(35): 23746-23752, 2023 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-37615166

RESUMO

The electronic structure and magnetic properties of Li(ZnMn)As with antisite defects have been investigated by using first-principles calculations within the Perdew-Burke-Ernzerhof generalized gradient approximation. The cation antisite defect induced by Zn substitution for As was considered. Mn-3d, As-4p, Zn-4s, and Zn-4p were involved in the formation of d-sp hybrid orbitals, which enhanced the non-localized properties of Mn-3d electrons and provided a channel of Mn(↑)-As(↓)-ZnAs(↓)-Mn(↑) for indirect exchange of electrons between the magnetic ions. The antisite defect of Zn-substituted As belonged to the acceptor doping, rendering the compound p-type characteristics. The existence of the extra free hole carriers regulated the magnetic ordering transition. The ferromagnetic coupling between the Mn magnetic dopants was more favorable in the system with an antisite defect. In this paper, a novel type of dilute magnetic semiconductor with controllable carriers was designed and the mechanism of ferromagnetic coupling was revealed, which provided a theoretical reference for the subsequent studies.

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