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1.
BMC Anesthesiol ; 24(1): 149, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38641778

RESUMO

BACKGROUND: Opioids such as sufentanil are used as anaesthetics due to their rapid action and superior analgesic effect. However, sufentanil induces a huge cough in paediatric patients. In contrast, intravenous (IV) lidocaine suppresses opioid-induced cough in children, but its use is limited due to anaesthetists' concern about its toxicity. Therefore, this study aimed to evaluate the effect of dose-dependent IV lidocaine on sufentanil-induced cough (SIC) in paediatric patients. METHODS: A total of 188 patients aged 3-12 years scheduled for elective tonsillectomy with or without adenoidectomy were enrolled and divided into four groups depending on different dose of lidocaine: A (0 mg.kg-1), B (1 mg.kg-1), C (1.5 mg.kg-1), and D (2 mg.kg-1). The primary outcome was the SIC grade observed during the induction of general anaesthesia. The secondary outcomes were the incidence of SIC, mean arterial pressure, and heart rate at T0, T1, T2, T3, T4, and T5. RESULTS: The SIC grade was significantly different between groups A and D (P = 0.04) and between groups B and D (P = 0.03). Moreover, the incidence of SIC in groups A, B, C, and D was 81%, 87%, 68%, and 64%, respectively, and the difference between groups B and C (P = 0.03) and between groups B and D (P = 0.0083) was statistically significant. No statistical differences were observed in the hemodynamic parameters between the groups. The incidence of severe cough was statistically different between group D and group A (P < 0.0001), between group D and group B (P < 0.0001), and between group D and group C (P < 0.0001) respectively. CONCLUSIONS: Lidocaine suppresses SIC in a dose-dependent manner without severe adverse events. IV lidocaine can be used in paediatric patients safely and efficiently, and the median effective dose was 1.75 mg/kg. TRIAL REGISTRATION: This study was approved by the Institutional Review Board of Yichang Central People's Hospital (HEC-KYJJ-2020-038-02), The trial was registered at www.chictr.org.cn (ChiCTR2100053006).


Assuntos
Lidocaína , Sufentanil , Humanos , Criança , Sufentanil/efeitos adversos , Lidocaína/efeitos adversos , Analgésicos Opioides , Anestésicos Intravenosos/efeitos adversos , Tosse/induzido quimicamente , Tosse/prevenção & controle , Tosse/tratamento farmacológico
2.
Ther Adv Med Oncol ; 16: 17588359231210274, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38606165

RESUMO

Tumor immune microenvironment (TIME) and its indications for lung cancer patient prognosis and therapeutic response have become new hotspots in cancer research in recent years. Tumor cells, immune cells, various regulatory factors, and their interactions in the TIME have been suggested to commonly influence lung cancer development and therapeutic outcome. The heterogeneity of TIME is composed of dynamic immune-related components, including various cancer cells, immune cells, cytokine/chemokine environments, cytotoxic activity, or immunosuppressive factors. The specific composition of cell subtypes may facilitate or hamper the response to immunotherapy and influence patient prognosis. Various markers have been found to stratify the patient prognosis or predict the therapeutic outcome. In this article, we systematically reviewed the recent advancement of TIME studies in lung adenocarcinoma (LUAD) using single-cell RNA sequencing (scRNA-seq) techniques, with specific focuses on the roles of TIME in LUAD development, TIME heterogeneity, indications of TIME in patient prognosis and therapeutic response during immunotherapy and drug resistance. The main findings in TIME heterogeneity and relevant markers or models for prognosis stratification and response prediction have been summarized. We hope that this review provides an overview of TIME status in LUAD and an inspiration for future development of strategies and biomarkers in LUAD treatment.

3.
Front Biosci (Landmark Ed) ; 29(3): 127, 2024 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-38538255

RESUMO

BACKGROUND: Gastric cancer (GC) stands as one of the most prevalent cancer types worldwide, holding the position of the second leading cause of cancer-related deaths. Gastric lesions represent pathological alterations to the gastric mucosa, with an elevated propensity to advance to gastric cancer. Limited research has explored the potential of stem cells in the treatment of gastric lesions. METHODS: This study aimed to explore the potential of intravenous transplantation of labeled bone marrow-derived mesenchymal stem cells (BMMSCs) to inhibit the progression of precancerous gastric lesions. RESULTS: In the gastric lesion disease model group, the rat tissue exhibited noteworthy mucosal atrophy, intestinal metaplasia, dysplasia, and inflammatory cell infiltration. Following the infusion of BMMSCs, a notable decrease in gastric lesions was found, with atrophic gastritis being the sole remaining lesion, which was confirmed by morphological and histological examinations. BMMSCs that were colonized at gastric lesions could differentiate into epithelial and stromal cells, as determined by the expression of pan-keratin or vimentin. The expression of vascular endothelial growth factor was significantly elevated following BMMSC transplantation. BMMSCs could also upregulate the production of humoral immune response cytokines, including interleukin (IL)-4 and IL-10, and downregulate the production of IL-17 and interferon-gamma, which could be highly associated with the cellular immune response and inflammation severity of the lesions. CONCLUSIONS: BMMSC transplantation significantly reduced inflammation and reversed gastric lesion progression.


Assuntos
Células-Tronco Mesenquimais , Lesões Pré-Cancerosas , Neoplasias Gástricas , Ratos , Animais , Neoplasias Gástricas/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo , Medula Óssea/patologia , Mucosa Gástrica/metabolismo , Mucosa Gástrica/patologia , Células-Tronco Mesenquimais/metabolismo , Inflamação/metabolismo , Lesões Pré-Cancerosas/terapia , Lesões Pré-Cancerosas/metabolismo , Lesões Pré-Cancerosas/patologia
4.
Spectrochim Acta A Mol Biomol Spectrosc ; 313: 124154, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38492466

RESUMO

At present, viologen-based compounds can undergo reversible chemical/physical changes under external stimuli such as light and electricity. This makes these compounds have potential applications in smart windows, displays, and sensors. In order to obtain such materials, three viologen-POM inorganic-organic hybrid compounds have been successfully synthesized by a hydrothermal method, namely {[Cu2(cybpy)8(α-P2W18O62)2}·18H2O (1), (Hbpy)·(cybpy)·[H4(α-P2W18O62)]}·32H2O (2) and {(Hcybpy)2(ß-Mo8O26)}·2H2O (3) (cybpy·Br = 1-cyclobutylmethyl-[4,4']bipyridinyl-1-ium bromide, bpy = 4,4'-bipyridine). Three compounds exhibit good discoloration behaviors under various external stimuli, especially under the stimulation of X-ray, UV, electricity, and organic amines. In addition, in order to promote the compounds in the actual production of more applications, they were doped into the polymer matrix to construct hybrid films, which not only have the same response to external stimulation but also increase the repeatability of the photochromic process. Moreover, 1-3 powder samples in ethanol solution were ultrasonic treated and deposited on filter paper, which can be successfully used in erasable inkless printing.

5.
J Agric Food Chem ; 72(5): 2598-2611, 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38227461

RESUMO

Thirteen new sativene sesquiterpenoids (1 and 3-14), one new natural product (2), and 16 known compounds (15-30) were isolated from the endophytic fungus Bipolaris victoriae S27. Their structures were elucidated by extensive spectroscopic analysis, NMR and ECD calculations, and X-ray crystal diffractions. Compound 1 represented the first example of sativene sesquiterpenoids with a 6/5/3/5-caged tetracyclic ring system. All obtained compounds were evaluated for their plant-growth regulatory activity. The results showed that 1, 3, 4, 6, 8, 11, 12, 17, 19, 26, and 27 could suppress the growth of Arabidopsis thaliana, while 2, 5, 13, 15, 18, and 25 showed promoting effects. Among them, compound 3 showed the most potent plant-growth inhibitory activity, which is obviously superior to that of the marked herbicide glyphosate.


Assuntos
Bipolaris , Reguladores de Crescimento de Plantas , Sesquiterpenos , Estrutura Molecular , Sesquiterpenos/química , Fungos
6.
Heart Surg Forum ; 27(1): E068-E075, 2024 Jan 21.
Artigo em Inglês | MEDLINE | ID: mdl-38286643

RESUMO

OBJECTIVE: To investigate postoperative vascular changes of patients with coarctation of the aorta (CoA). METHODS: Literature review of updated articles was performed in June 2023 through the following databases: PubMed, Web of Science, EMBASE, Crohrane Library, CNKI and Wanfang database. All the case-control studies regarding the postoperative changes of vascular structure and function in patients with CoA were analyzed. RESULTS: A total of 596 articles from the above databases were initially identified, with 10 articles being selected for meta-analysis. The analysis showed that weighted mean difference (WMD) of carotid intima-media thickness (cIMT) was 0.07 (95% CI = 0.01~0.13, p < 0.01) and WMD of flow mediated dilation (FMD) was -4.36 (95% CI = -7.49~-1.24, p < 0.01), respectively. The postoperative cIMT of CoA patients was higher than that of the control group, but the postoperative FMD was lower than that of the control group. CONCLUSIONS: The operation on CoA patients ameliorates anatomical deformity in the vascular structures. However, intima-media thickening and endothelial malfunction remain as the key postoperative issues.


Assuntos
Coartação Aórtica , Espessura Intima-Media Carotídea , Humanos , Coartação Aórtica/cirurgia , Dilatação Patológica , Estudos de Casos e Controles
7.
Eur Arch Psychiatry Clin Neurosci ; 274(2): 353-362, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37148307

RESUMO

BACKGROUND: Relapse remains the major challenge in treatment of alcohol use disorder (AUD). Aberrant decision-making has been found as important cognitive mechanism underlying relapse, but factors associated with relapse vulnerability are unclear. Here, we aim to identify potential computational markers of relapse vulnerability by investigating risky decision-making in individuals with AUD. METHODS: Forty-six healthy controls and fifty-two individuals with AUD were recruited for this study. The risk-taking propensity of these subjects was investigated using the balloon analog risk task (BART). After completion of clinical treatment, all individuals with AUD were followed up and divided into a non-relapse AUD group and a relapse AUD group according to their drinking status. RESULTS: The risk-taking propensity differed significantly among healthy controls, the non-relapse AUD group, and the relapse AUD group, and was negatively associated with the duration of abstinence in individuals with AUD. Logistic regression models showed that risk-taking propensity, as measured by the computational model, was a valid predictor of alcohol relapse, and higher risk-taking propensity was associated with greater risk of relapse to drink. CONCLUSION: Our study presents new insights into risk-taking measurement and identifies computational markers that provide prospective information for relapse to drink in individuals with AUD.


Assuntos
Alcoolismo , Humanos , Estudos Prospectivos , Alcoolismo/psicologia , Etanol , Consumo de Bebidas Alcoólicas/psicologia , Recidiva
8.
Light Sci Appl ; 12(1): 292, 2023 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-38052775

RESUMO

Biomarker detection is key to identifying health risks. However, designing sensitive and single-use biosensors for early diagnosis remains a major challenge. Here, we report submonolayer lasers on optical fibers as ultrasensitive and disposable biosensors. Telecom optical fibers serve as distributed optical microcavities with high Q-factor, great repeatability, and ultralow cost, which enables whispering-gallery laser emission to detect biomarkers. It is found that the sensing performance strongly depends on the number of gain molecules. The submonolayer lasers obtained a six-order-of-magnitude improvement in the lower limit of detection (LOD) when compared to saturated monolayer lasers. We further achieve an ultrasensitive immunoassay for a Parkinson's disease biomarker, alpha-synuclein (α-syn), with a lower LOD of 0.32 pM in serum, which is three orders of magnitude lower than the α-syn concentration in the serum of Parkinson's disease patients. Our demonstration of submonolayer biolaser offers great potentials in high-throughput clinical diagnosis with ultimate sensitivity.

9.
BMC Genomics ; 24(1): 588, 2023 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-37794356

RESUMO

BACKGROUND: The fruits of Gardenia are rich in flavonoids and geniposides, which have various pharmacological effects such as antioxidant, anti-inflammatory and anticancer. In this study, we analyzed the transcriptome and metabolome of gardenia peel and kernel at different growth stages, revealed the regulatory network related to flavonoid synthesis, and identified the key regulatory genes. RESULTS: The results showed that in terms of flavonoid metabolic pathways, gardenia fruits mainly synthesized cinnamic acid through the phenylpropanoid pathway, and then synthesized flavonoids through the action of catalytic enzymes such as 4-coumaroyl-CoA ligase, chalcone synthase, chalcone isomerase and flavanol synthase, respectively. In addition, we found that the metabolomics data showed a certain spatial and temporal pattern in the expression of genes related to the flavonoid metabolism pathway and the relative content of metabolites, which was related to the development and ripening process of the fruit. CONCLUSIONS: In summary, this study successfully screened out the key genes related to the biosynthesis metabolism of flavonoids in gardenia through the joint analysis of transcriptome and metabolome. This is of certain significance to the in-depth study of the formation mechanism of gardenia efficacy components and the improvement of quality.


Assuntos
Gardenia , Iridoides , Gardenia/genética , Frutas/genética , Flavonoides , Multiômica
10.
Opt Express ; 31(16): 25545-25556, 2023 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-37710438

RESUMO

A high-performance towing cable hydrophone array based on an improved ultra-sensitive fiber-optic distributed acoustic sensing system (uDAS) with picostrain sensitivity is demonstrated and tested in sea trial, for the first time. A new composite transducer is designed and optimized to enhance the acoustic pressure sensitivity significantly. A sea trial is carried out to test the performances of such a hydrophone array, including flow noise, underwater acoustic signal capture capacity, beamforming processing and localization of artificial source targets. The array exhibits high sensitivity and low noise floor. An average sensitivity of -129.23 dB re rad/µPa at frequencies from 10 Hz to 1500 Hz has been achieved. The localization at distances of 5 km and 10 km is realized, respectively, validating the excellent remote detection and positioning capability of the hydrophone system. The proposed towing cable system, with high sensitivity, simple structure and remote target localization ability, may pave a way for development of the next generation of high-performance light-weighting hydrophone arrays for towing applications.

11.
Front Med (Lausanne) ; 10: 1253738, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37680615

RESUMO

Background: Preoperative anxiety often prevails in children at higher levels than adults, which is a common impediment for surgeons and anesthesiologists. It is of great necessity to explore an appropriate medication to improve this situation. Remimazolam, a type of benzodiazepine drug, has been indicated for the induction and maintenance of procedural sedation in adults since 2020. To date, rare studies were reported to investigate the effect of remimazolam on children. In this study, we investigated the safety and efficacy of intranasal drops of remimazolam and tried to determine the 95% effective dose (ED95) of remimazolam in single intranasal administration in attenuating preoperative anxiety in children. Methods: In this study, 114 children were enrolled who underwent laparoscopic high-level inguinal hernia ligation between January 2021 and December 2022 and were divided into an early childhood children group and a pre-school children group. The biased coin design (BCD) was used to determine the target doses. A positive response was defined as the effective relief of preoperative anxiety (modified Yale Preoperative Anxiety Scale, mYPAS < 30). The initial nasal dose of remimazolam was 0.5 mg·kg-1 in the two groups. An increment or decrement of 0.1 mg·kg-1 was applied depending on the sedative responses. Isotonic regression and bootstrapping methods were used to calculate the ED95 and 95% confidence intervals (CIs), respectively. Results: A total of 80 children completed the study, including 40 in the early childhood group and 40 in the pre-school children group. As statistical analysis indicated, the ED95 of a single intranasal infusion of remimazolam for the relief of preoperative anxiety is 1.57 mg·kg-1 (95% CI: 1.45-1.59 mg·kg-1) in early childhood children and 1.09 mg·kg-1 (95% CI: 0.99-1.11 mg·kg-1) in pre-school children, and the CIs did not overlap each other. Conclusion: Remimazolam is an effective medication to relieve preoperative anxiety in children. Moreover, the ED95 of single nasal administration of remimazolam for effective relief of preoperative anxiety was 1.57 and 1.09 mg·kg-1 in early childhood children and pre-school children, respectively.

12.
Metabolites ; 13(8)2023 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-37623897

RESUMO

Alzheimer's disease (AD) represents a significant public health concern in modern society. Metabolic syndrome (MetS), which includes diabetes mellitus (DM) and obesity, represents a modifiable risk factor for AD. MetS and AD are interconnected through various mechanisms, such as mitochondrial dysfunction, oxidative stress, insulin resistance (IR), vascular impairment, inflammation, and endoplasmic reticulum (ER) stress. Therefore, it is necessary to seek a multi-targeted and safer approach to intervention. Thus, 10-hydroxy-2-decenoic acid (10-HDA), a unique hydroxy fatty acid in royal jelly, has shown promising anti-neuroinflammatory, blood-brain barrier (BBB)-preserving, and neurogenesis-promoting properties. In this paper, we provide a summary of the relationship between MetS and AD, together with an introduction to 10-HDA as a potential intervention nutrient. In addition, molecular docking is performed to explore the metabolic tuning properties of 10-HDA with associated macromolecules such as GLP-1R, PPARs, GSK-3, and TREM2. In conclusion, there is a close relationship between AD and MetS, and 10-HDA shows potential as a beneficial nutritional intervention for both AD and MetS.

13.
J Vis Exp ; (198)2023 08 18.
Artigo em Inglês | MEDLINE | ID: mdl-37607105

RESUMO

Hepatocellular carcinoma (HCC) is a highly prevalent and lethal tumor worldwide and its late discovery and lack of effective specific therapeutic agents necessitate further research into its pathogenesis and treatment. Organoids, a novel model that closely resembles native tumor tissue and can be cultured in vitro, have garnered significant interest in recent years, with numerous reports on the development of organoid models for liver cancer. In this study, we have successfully optimized the procedure and established a culture protocol that enables the formation of larger-sized HCC organoids with stable passaging and culture conditions. We have comprehensively outlined each step of the procedure, covering the entire process of HCC tissue dissociation, organoid plating, culture, passaging, cryopreservation, and resuscitation, and provided detailed precautions in this paper. These organoids exhibit genetic similarity to the original HCC tissues and can be utilized for diverse applications, including the identification of potential therapeutic targets for tumors and subsequent drug development.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/genética , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/genética , Descoberta de Drogas , Desenvolvimento de Medicamentos , Organoides
14.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue ; 35(7): 759-761, 2023 Jul.
Artigo em Chinês | MEDLINE | ID: mdl-37545457

RESUMO

Patients who are bedridden are for a long-time prone to develop bedsores, especially in the hip and sacral areas and limbs, which causes eczema, ulcers, infection and other complications, resulting in pain and more medical costs. Therefore, the medical staff of the Second Affiliated Hospital of Zunyi Medical University designed and developed a kind of anti-bedsore turning pad, and has obtained the national utility model patent (ZL 2021 2 3004923.9), which is suitable for various long-term bedridden patients. The anti-bedsore turning pad includes the center axis of the turning pad, and ventilation pad 1 and ventilation pad 2 designed on the left and right of turning pad center axis. Under the ventilation pad 1 and the ventilation pad 2, the air pad 1 and the air pad 2 are respectively designed. There is a bedspread connected with ventilation pad 1 and ventilation pad 2 on the inflatable pad 1 and the inflatable pad 2. Through the design of inflatable pad 1 and inflatable pad 2, the left and right of the anti-bedsore turning pad can be lowered or raised independently, which is convenient for the patient's body to tilt and turn over, and can significantly reduce the number of nursing staff and the burden of nursing staff when turning over. In addition, it is convenient to replace the force site at any time and reduce the occurrence of pressure ulcers caused by long-term pressure on the force site. Through the design of ventilation cushion 1 and ventilation cushion 2, the internal gas flow of the turning pad can be made, and the ventilation between the patient and the turning pad can be kept dry, so as to reduce the occurrence of eczema, ulcers or infection and other complications, and ultimately reduce the occurrence of bedsores. In addition, through the design of the most superficial limb pad, the patient's limb can be appropriately elevated or massaged, which increases the comfort of the patient. The anti-bedsore turning pad is simple and effective, and can be widely used in long-term bedridden patients.


Assuntos
Eczema , Lesão por Pressão , Humanos , Lesão por Pressão/epidemiologia , Úlcera , Respiração , Fatores de Risco
15.
World J Clin Cases ; 11(15): 3511-3521, 2023 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-37383893

RESUMO

BACKGROUND: Heart failure (HF) often affects the progress of sepsis patients, although its impact on outcomes is inconsistent and inconclusive. AIM: To conduct a systematic review and meta-analysis of the impact of HF on mortality in patients with sepsis. METHODS: PubMed, Embase, Web of Science, and the Cochrane Library databases were searched to compare the outcomes of sepsis patients with HF. A random effect model was used to summarize the mortality data, and the odds ratio (OR) and 95% confidence interval (CI) were calculated as effect indicators. RESULTS: Among 18001 records retrieved in the literature search, 35712 patients from 10 separate studies were included. The results showed that sepsis patients with HF were associated with increased total mortality (OR = 1.80, 95%CI: 1.34-2.43; I2 = 92.1%), with high heterogeneity between studies. Significant subgroup differences according to age, geographical location, and HF patient sample were observed. HF did not increase the 1-year mortality of patients (OR = 1.11, 95%CI: 0.75-1.62; I2 = 93.2%), and the mortality of patients with isolated right ventricular dysfunction (OR=2.32, 95%CI: 1.29-4.14; I2 = 91.5%) increased significantly. CONCLUSION: In patients with sepsis, HF is often associated with adverse outcomes and mortality. Our results call for more high-quality research and strategies to improve outcomes for sepsis patients with HF.

16.
Biosens Bioelectron ; 237: 115497, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37390642

RESUMO

Surface-enhanced Raman spectroscopy (SERS) sandwich biosensors have received tremendous attention in early diagnosis of bacterial infections. However, efficiently engineering nanoscale plasmonic hots pots (HS) towards ultrasensitive SERS detection still remains challenging. Herein, we propose a bioinspired synergistic HS engineering strategy to construct ultrasensitive SERS sandwich bacterial sensor (named USSB), by coupling bioinspired signal module and plasmonic enrichment module to synergistically boost the number and intensity of HS. The bioinspired signal module is based on dendritic mesoporous silica nanocarrier (DMSN) loaded with plasmonic nanoparticles and SERS tag, while magnetic Fe3O4 nanoparticles coated with Au shell are employed in plasmonic enrichment module. We demonstrate that DMSN effectively shrank nanogaps between plasmonic nanoparticles to improve HS intensity. Meanwhile, plasmonic enrichment module contributed to plenty of additional HS inside and outside individual "sandwich". Ascribing to the boosted number and intensity of HS, the constructed USSB sensor exhibits ultrahigh detection sensitivity (7 CFU/mL) and selectivity towards model pathogenic bacteria of Staphylococcus aureus. Remarkably, the USSB sensor enables fast and accurate bacterial detection in real blood samples of septic mice, achieving early diagnosis of bacterial sepsis. The proposed bioinspired synergistic HS engineering strategy opens up a new direction for constructing ultrasensitive SERS sandwich biosensors, and may promote their advancing applications in the early diagnosis and prognosis of devastating diseases.


Assuntos
Técnicas Biossensoriais , Nanopartículas Metálicas , Animais , Camundongos , Nanopartículas Metálicas/química , Técnicas Biossensoriais/métodos , Análise Espectral Raman/métodos , Staphylococcus aureus , Bactérias , Dióxido de Silício , Ouro/química
17.
J Sep Sci ; 46(16): e2200941, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37322407

RESUMO

Danggui Buxue Decoction is a classic formula for replenishing qi and nourishing blood. Despite its widespread use, its dynamic metabolism involved remains unclear. Based on the sequential metabolism strategy, blood samples from different metabolic sites were obtained via in situ closed intestine ring integrated with a jugular venous continuous blood supply technique. An ultra-high-performance liquid chromatography-linear triple quadruple-Orbitrap-tandem mass spectrometry method was developed for the identification of prototypes and metabolites in rat plasma. The dynamic absorption and metabolic landscape of flavonoids, saponins, and phthalides were characterized. Flavonoids could be deglycosylated, deacetylated, demethylated, dehydroxylated, and glucuronicated in the gut and then absorbed for further metabolism. Jejunum is an important metabolic site for saponins biotransformation. Saponins that are substituted by Acetyl groups tend to lose their acetyl groups and convert to Astragaloside IV in the jejunum. Phthalides could be hydroxylated and glucuronidated in the gut and then absorbed for further metabolism. Seven components serve as crucial joints in the metabolic network and are potential candidates for the quality control of Danggui Buxue Decoction. The sequential metabolism strategy described in this study could be useful for characterizing the metabolic pathways of Chinese medicine and natural products in the digestive system.


Assuntos
Medicamentos de Ervas Chinesas , Saponinas , Ratos , Animais , Espectrometria de Massas em Tandem , Medicamentos de Ervas Chinesas/análise , Cromatografia Líquida de Alta Pressão/métodos , Flavonoides/análise , Saponinas/análise
18.
Z Gesundh Wiss ; : 1-18, 2023 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-37361274

RESUMO

Aim: Asians are the second largest and fastest growing non-European population in New Zealand but are under-researched in terms of their COVID-19 pandemic response. The paper aims to illustrates Asians' risk perceptions and knowledge of COVID-19, and self-protection practices to avoid infection and prevent community transmission. Subject and methods: An online survey was used to collect data and received 402 valid responses. Data analyses included: 1) a descriptive analysis by using Chi-square tests and a Kruskal-Wallis rank sum tests to explore associations between responses and the four demographic variables (i.e. age, gender, country of origin/ethnicity, and region); and 2) a correlation analysis between different survey objectives. Results: The descriptive analysis of the survey found that while ethnicity (within the Asian category) was the most influential variable that resulted in varying responses to many questions, gender and age were other two important variables in influencing the answering patterns. The correlation analysis found a positive correlation between the perceived 'dangerousness' of COVID-19 and respondents' overall compliance behaviour to New Zealand authorities' recommendations to prevent spread of COVID-19. Conclusion: The majority of the respondents provided correct answers to the questions about the vulnerable populations, symptoms, asymptomatic transmission and potential sequelae of COVID-19; however, their understanding of the availability of a cure for, and the incubation period of COVID-19 was not consistent with the official information. The research also found that the higher perceived dangerousness of COVID-19, the better compliance to self-protection practices among the surveyed population.

19.
Int Immunopharmacol ; 121: 110530, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37348231

RESUMO

The C-X-C motif ligand 16, or CXCL16, is a chemokine that belongs to the ELR - CXC subfamily. Its function is to bind to the chemokine receptor CXCR6, which is a G protein-coupled receptor with 7 transmembrane domains. The CXCR6/CXCL16 axis has been linked to the development of numerous autoimmune diseases and is connected to clinical parameters that reflect disease severity, activity, and prognosis in conditions such as multiple sclerosis, autoimmune hepatitis, rheumatoid arthritis, Crohn's disease, and psoriasis. CXCL16 is expressed in various immune cells, such as dendritic cells, monocytes, macrophages, and B cells. During autoimmune diseases, CXCL16 can facilitate the adhesion of immune cells like monocytes, T cells, NKT cells, and others to endothelial cells and dendritic cells. Additionally, sCXCL16 can regulate the migration of CXCR6-expressing leukocytes, which includes CD8+ T cells, CD4+ T cells, NK cells, constant natural killer T cells, plasma cells, and monocytes. Further investigation is required to comprehend the intricate interactions between chemokines and the pathogenesis of autoimmune diseases. It remains to be seen whether the CXCR6/CXCL16 axis represents a new target for the treatment of these conditions.


Assuntos
Doenças Autoimunes , Quimiocinas CXC , Humanos , Receptores Depuradores , Linfócitos T CD8-Positivos , Células Endoteliais , Receptores CXCR6 , Receptores Virais , Quimiocina CXCL16
20.
BMC Anesthesiol ; 23(1): 192, 2023 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-37270472

RESUMO

BACKGROUND: Anesthesia with opioids negatively affects patients' quality of recovery. Opioid-free anesthesia attempts to avoid these effects. This study aimed to evaluate the effect of opioid-free anesthesia on the quality of recovery, using lidocaine on patients undergoing hysteroscopy. METHODS: A parallel-group, randomized, double-blind, controlled trial was conducted in Yichang Central Peoples' Hospital, Hubei Province, China, from January to April, 2022. We included 90 female patients (age: 18-65 years, American Society of Anesthesiologists Physical Status Class I-II) scheduled for elective hysteroscopy, 45 of whom received lidocaine (Group L), and 45 received sufentanil (Group S). Patients were randomly allocated to receive either lidocaine or sufentanil perioperatively. The primary outcome was the quality of postoperative recovery, which was assessed using the QoR-40 questionnaire (a patient-reported outcome questionnaire measuring the quality of recovery after surgery). RESULTS: The two groups were similar in age, American Society of Anesthesiology physical status, height, weight, body mass index, and surgical duration. The QoR scores were significantly higher in Group L than Group S. The incidence of postoperative nausea and vomiting, as well as the time to extubation were significantly lower in Group L than Group S. CONCLUSION: Opioid-free anesthesia with lidocaine achieves a better quality of recovery, faster recovery, and a shorter time to extubation than general anesthesia with sufentanil. TRIAL REGISTRATION: The trial was registered on January 15, 2022 in the Chinese Clinical Trial Registry ( http://www.chictr.org.cn/showprojen.aspx?proj=149386 ), registration number ChiCTR2200055623.(15/01/2022).


Assuntos
Analgésicos Opioides , Anestesiologia , Humanos , Feminino , Gravidez , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Lidocaína , Sufentanil , Histeroscopia , Náusea e Vômito Pós-Operatórios , Anestesia Geral , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/prevenção & controle , Método Duplo-Cego
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