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1.
BMC Prim Care ; 25(1): 206, 2024 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-38858619

RESUMO

BACKGROUND: Measuring treatment burden is important for the effective management of Type 2 Diabetes Mellitus (T2DM) care. The purpose of this systematic review was to identify the most robust approach for measuring treatment burden in people with T2DM based on existing evidence. METHODS: Articles from seven databases were retrieved. Qualitative, quantitative, and mixed-methods studies examining treatment burden in adults with T2DM and/or reporting relevant experiences were included. A convergent segregated approach with a mixed-methods design of systematic review was employed, creating a measurement framework in a narrative review for consistent critical appraisal. The quality of included studies was assessed using the Joanna Briggs Institute tool. The measurement properties of the instruments were evaluated using the Consensus based Standards for selection of Health Measurement Instruments (COSMIN) checklist. RESULTS: A total of 21,584 records were screened, and 26 articles were included, comprising 11 quantitative, 11 qualitative, and 4 mixed-methods studies. A thematic analysis of qualitative data extracted from the included articles summarised a measurement framework encompassing seven core and six associated measurements. The core measurements, including financial, medication, administrative, lifestyle, healthcare, time/travel, and medical information burdens, directly reflect the constructs pertinent to the treatment burden of T2DM. In contrast, the associated measurement themes do not directly reflect the burdens or are less substantiated by current evidence. The results of the COSMIN checklist evaluation demonstrated that the Patient Experience with Treatment and Self-management (PETS), Treatment Burden Questionnaire (TBQ), and Multimorbidity Treatment Burden Questionnaire (MTBQ) have robust instrument development processes. These three instruments, with the highest total counts combining the number of themes covered and "positive" ratings in COSMIN evaluation, were in the top tertile stratification, demonstrating superior applicability for measuring T2DM treatment burden. CONCLUSIONS: This systematic review provides evidence for the currently superior option of measuring treatment burden in people with T2DM. It also revealed that most current research was conducted in well-resourced institutions, potentially overlooking variability in under-resourced settings.


Assuntos
Efeitos Psicossociais da Doença , Diabetes Mellitus Tipo 2 , Diabetes Mellitus Tipo 2/terapia , Humanos
2.
Nanomaterials (Basel) ; 14(9)2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38727361

RESUMO

Electrodes are one of the key components that influence the performance of all-vanadium redox flow batteries (VRFBs). A porous graphite felt with modified fiber surfaces that can provide a high specific activation surface is preferred as the electrode of a VRFB. In this study, a simple binder-free approach is developed for preparing stable carbon nanotube modified graphite felt electrodes (CNT-GFs). Heat-treated graphite felt electrodes (H-GFs) are dip-coated using CNT homogeneous solution. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results conclude that CNT-GFs have less resistance, better reaction currents, and reversibility as compared to H-GF. Cell performances showed that CNT-GFs significantly improve the performance of a VRFB, especially for the CNT-GF served in the positive side of the VRFB. CNT presence increases the electrochemical properties of the graphite electrode; as a result, reaction kinetics for both VO2+/VO2+ and V3+/V2+ are improved. Positive CNT-GF (P-CNT-GF) configured VRFB exhibits voltage efficiency, coulombic efficiency, and energy efficiency of 85%, 97%, and 82%, respectively, at the operating current density of 100 mA cm-2. At high current density of 200 mA cm-2, the VRFB with P-CNT-GF shows 73%, 98%, and 72% of the voltage, coulombic, and energy efficiencies, respectively. The energy efficiency of the CNT-GF is 6% higher when compared with that of B-H-GF. The VRFB with CNT-GF can provide stable performance for 300 cycles at 200 mA cm-2.

3.
Nanomaterials (Basel) ; 14(9)2024 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-38727394

RESUMO

Iron redox flow batteries (IRFBs) are cost-efficient RFBs that have the potential to develop low-cost grid energy storage. Electrode kinetics are pivotal in defining the cycle life and energy efficiency of the battery. In this study, graphite felt (GF) is heat-treated at 400, 500 and 600 °C, and its physicochemical and electrochemical properties are studied using XPS, FESEM, Raman and cyclic voltammetry. Surface morphology and structural changes suggest that GF heat-treated at 500 °C for 6 h exhibits acceptable thermal stability while accessing the benefits of heat treatment. Specific capacitance was calculated for assessing the wettability and electrochemical properties of pristine and treated electrodes. The 600 °C GF has the highest specific capacitance of 34.8 Fg-1 at 100 mV s-1, but the 500 °C GF showed the best battery performance. The good battery performance of the 500 °C GF is attributed to the presence of oxygen functionalities and the absence of thermal degradation during heat treatment. The battery consisting of 500 °C GF electrodes offered the highest voltage efficiency of ~74%, Coulombic efficiency of ~94%, and energy efficiency of ~70% at 20 mA cm-2. Energy efficiency increased by 7% in a battery consisting of heat-treated GF in comparison to pristine GF. The battery is capable of operating for 100 charge-discharge cycles with an average energy efficiency of ~ 67% for over 100 cycles.

4.
NPJ Biofilms Microbiomes ; 10(1): 25, 2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38509085

RESUMO

Hyperuricemia (HUA) is a metabolic syndrome caused by abnormal purine metabolism. Although recent studies have noted a relationship between the gut microbiota and gout, whether the microbiota could ameliorate HUA-associated systemic purine metabolism remains unclear. In this study, we constructed a novel model of HUA in geese and investigated the mechanism by which Lactobacillus rhamnosus GG (LGG) could have beneficial effects on HUA. The administration of antibiotics and fecal microbiota transplantation (FMT) experiments were used in this HUA goose model. The effects of LGG and its metabolites on HUA were evaluated in vivo and in vitro. Heterogeneous expression and gene knockout of LGG revealed the mechanism of LGG. Multi-omics analysis revealed that the Lactobacillus genus is associated with changes in purine metabolism in HUA. This study showed that LGG and its metabolites could alleviate HUA through the gut-liver-kidney axis. Whole-genome analysis, heterogeneous expression, and gene knockout of LGG enzymes ABC-type multidrug transport system (ABCT), inosine-uridine nucleoside N-ribohydrolase (iunH), and xanthine permease (pbuX) demonstrated the function of nucleoside degradation in LGG. Multi-omics and a correlation analysis in HUA patients and this goose model revealed that a serum proline deficiency, as well as changes in Collinsella and Lactobacillus, may be associated with the occurrence of HUA. Our findings demonstrated the potential of a goose model of diet-induced HUA, and LGG and proline could be promising therapies for HUA.


Assuntos
Hiperuricemia , Lacticaseibacillus rhamnosus , Humanos , Hiperuricemia/terapia , Nucleosídeos , Lactobacillus , Prolina , Purinas
5.
BMC Prim Care ; 25(1): 88, 2024 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-38491369

RESUMO

BACKGROUND: Understanding treatment burden is a critical element to the effective management of Type 2 Diabetes Mellitus (T2DM). The current study aims to address the knowledge gap surrounding treatment burden of T2DM from the patient's perspective in China's primary care settings. METHODS: A narrative review informed the creation of an a priori coding structure to identify aspects of T2DM treatment burden. Focus groups were conducted, employing a maximum variation sampling strategy to select participants from diverse sociodemographic backgrounds across urban, suburban, rural, and remote areas in China. Participants included adults with T2DM care in primary care settings for over a year and a Treatment Burden Questionnaire score of 25 or higher. Deductive thematic analysis, guided by the coding structure, facilitated a comprehensive exploration and further development of the conceptual framework of T2DM treatment burden. RESULTS: Four focus groups, each comprising five participants from diverse areas, were conducted. Utilising the Cumulative Complexity Model and Normalisation Process Theory as theoretical underpinnings, the thematic analysis refined the conceptual framework based on the coding structure from the narrative review. Five key themes were refined, encompassing medical information, medication, administration, healthcare system, and lifestyle. Additionally, the financial and time/travel themes merged into a new theme termed "personal resources", illustrating their overlapping within the framework. Participants in these focus groups highlighted challenges in managing medical information, an aspect often underrepresented in prior treatment burden research. The thematic analysis culminated in a finalised conceptual framework, offering a comprehensive understanding of the treatment burden experiences of people with T2DM in China's primary care settings. This framework includes six key constructs, delineating T2DM treatment burden and associated factors, such as antecedents and consequences. CONCLUSIONS: This study provides insights into the treatment burden of T2DM. A conceptual framework was finalised to deepen the understanding of the multifaceted constructs and the nature of treatment burden in people with T2DM. Furthermore, it emphasises the need to tailor T2DM treatment to individual capacities, considering their personal resource allocation and treatment utilisation.


Assuntos
Diabetes Mellitus Tipo 2 , Adulto , Humanos , Diabetes Mellitus Tipo 2/tratamento farmacológico , Grupos Focais , Estilo de Vida , Atenção Primária à Saúde/métodos , China/epidemiologia
6.
Molecules ; 28(23)2023 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-38067478

RESUMO

The use of platinum-free (Pt) cathode electrocatalysts for oxygen reduction reactions (ORRs) has been significantly studied over the past decade, improving slow reaction mechanisms. For many significant energy conversion and storage technologies, including fuel cells and metal-air batteries, the ORR is a crucial process. These have motivated the development of highly active and long-lasting platinum-free electrocatalysts, which cost less than proton exchange membrane fuel cells (PEMFCs). Researchers have identified a novel, non-precious carbon-based electrocatalyst material as the most effective substitute for platinum (Pt) electrocatalysts. Rich sources, outstanding electrical conductivity, adaptable molecular structures, and environmental compatibility are just a few of its benefits. Additionally, the increased surface area and the simplicity of regulating its structure can significantly improve the electrocatalyst's reactive sites and mass transport. Other benefits include the use of heteroatoms and single or multiple metal atoms, which are capable of acting as extremely effective ORR electrocatalysts. The rapid innovations in non-precious carbon-based nanomaterials in the ORR electrocatalyst field are the main topics of this review. As a result, this review provides an overview of the basic ORR reaction and the mechanism of the active sites in non-precious carbon-based electrocatalysts. Further analysis of the development, performance, and evaluation of these systems is provided in more detail. Furthermore, the significance of doping is highlighted and discussed, which shows how researchers can enhance the properties of electrocatalysts. Finally, this review discusses the existing challenges and expectations for the development of highly efficient and inexpensive electrocatalysts that are linked to crucial technologies in this expanding field.

7.
J Med Chem ; 66(8): 5685-5702, 2023 04 27.
Artigo em Inglês | MEDLINE | ID: mdl-37021456

RESUMO

In recent years, it has been proposed that G9a/EZH2 dual inhibition is a promising cancer treatment strategy. Herein, we present the discovery of G9a/EZH2 dual inhibitors that merge the pharmacophores of G9a and EZH2 inhibitors. Among them, the most promising compound 15h displayed potent inhibitory activities against G9a (IC50 = 2.90 ± 0.05 nM) and EZH2 (IC50 = 4.35 ± 0.02 nM), superior antiproliferative profiles against RD (CC50 = 19.63 ± 0.18 µM) and SW982 (CC50 = 19.91 ± 0.50 µM) cell lines. In vivo, 15h achieved significant antitumor efficacy in a xenograft mouse model of human rhabdoid tumor with a tumor growth inhibitory rate of 86.6% without causing observable toxic effects. The on-target activity assays illustrated that compound 15h can inhibit tumor growth by specifically inhibiting EZH2 and G9a. Therefore, 15h is a potential anticancer drug candidate for the treatment of malignant rhabdoid tumor.


Assuntos
Antineoplásicos , Tumor Rabdoide , Humanos , Camundongos , Animais , Tumor Rabdoide/tratamento farmacológico , Lisina/farmacologia , Histona-Lisina N-Metiltransferase , Inibidores Enzimáticos/farmacologia , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Proliferação de Células , Proteína Potenciadora do Homólogo 2 de Zeste
8.
Arch Med Res ; 54(4): 277-286, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36990889

RESUMO

BACKGROUND: Chronic obstructive pulmonary disease and other respiratory inflammatory diseases are often associated with cigarette smoke exposure. However, the underlying molecular mechanism remains unclear. AIM OF THE STUDY: This study aimed to investigate the role of sphingosine-1-phosphate receptor 2 (S1PR2) in cigarette smoke extract (CSE)-induced inflammation and pyroptosis in human bronchial epithelial (HBE) cells. METHODS: CSE was administered to HBE cells and inflammation and pyroptosis were assessed. The mRNA levels of S1PR2, NLRP3, IL-1ß, and IL-18 in HBE cells were detected by quantitative RT-PCR. Secreted protein levels of IL-1ß and IL-18 in the culture supernatants were detected using enzyme-linked immunosorbent assay. Western blotting was used to measure the levels of S1PR2 and pyroptosis-related proteins (NLRP3, ASC, caspase-1, GSDMD, IL-1ß, and IL-18). RESULTS: Our study revealed an upregulated expression of S1PR2, NLRP3, ASC, caspase-1, GSDMD, IL-1ß, and regulated IL-18 in HBE cells after CSE exposure. Genetic blockage of S1PR2 could reverse the increased expression of these proteins related to CSE-induced pyroptosis. Conversely, S1PR2 overexpression increased CSE-induced pyroptosis by upregulating the expression of NLRP3, ASC, caspase-1, GSDMD, IL-1ß, and IL-18 in HBE cells. CONCLUSIONS: Our results revealed that a novel S1PR2 signaling pathway may be involved in the pathogenesis of CSE-induced inflammation and pyroptosis in HBE cells. Thus, S1PR2 inhibitors could be an effective treatment for cigarette smoke-induced airway inflammation and injury.


Assuntos
Fumar Cigarros , Piroptose , Humanos , Interleucina-18/metabolismo , Interleucina-18/farmacologia , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Receptores de Esfingosina-1-Fosfato/metabolismo , Células Epiteliais , Inflamação/patologia , Caspases/metabolismo
9.
Diabetol Metab Syndr ; 15(1): 37, 2023 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-36890514

RESUMO

OBJECTIVE: Obesity is associated with gut microbiota disorders, which has been related to developing metabolic syndromes. The research aims to investigate the effects of caffeine treatment on insulin resistance, intestinal microbiota composition and serum metabolomic changes in high-fat diet (HFD)-induced obesity mice. METHODS: Eight-week-old male C57BL/6 J mice were fed a normal chow diet (NCD) or HFD with or without different concentrations of caffeine. After 12 weeks of treatment, body weight, insulin resistance, serum lipid profiles, gut microbiota and serum metabolomic profiles were assessed. RESULTS: Caffeine intervention improved the metabolic syndrome in HFD-fed mice, such as serum lipid disorders and insulin resistance. 16S rRNA Sequencing analysis revealed that caffeine increased the relative abundance of Dubosiella, Bifidobacterium and Desulfovibrio and decreased that of Bacteroides, Lactobacillus and Lactococcus to reverse HFD-fed obesity in mice. Additionally, Caffeine Supplementation also altered serum metabolomics, mainly focusing on lipid metabolism, bile acid metabolism and energy metabolism. Caffeine increased its metabolite 1,7-Dimethylxanthine, which was positively correlated with Dubosiella. CONCLUSIONS: Caffeine exerts a beneficial effect on insulin resistance in HFD-mice, and the underlying mechanism may be partly related to altered gut microbiota and bile acid metabolism.

10.
Micromachines (Basel) ; 15(1)2023 Dec 28.
Artigo em Inglês | MEDLINE | ID: mdl-38258181

RESUMO

NiFe2O4 material is grown on carbon paper (CP) with the hydrothermal method for use as electrocatalysts in an alkaline electrolyzer. NiFe2O4 material is used as the anode and cathode catalysts (named NiFe(+)/NiFe(-) hereafter). The results are compared with those obtained using CP/NiFe as the anode and CP/Ru as the cathode (named NiFe)(+)/Ru(-) hereafter). During cell operation with NiFe(+)/Ru(-), the current density reaches 500 mA/cm2 at a cell voltage of 1.79 V, with a specific energy consumption of 4.9 kWh/m3 and an energy efficiency of 66.2%. In comparison, for NiFe(+)/NiFe(-), the current density reaches 500 mA/cm2 at a cell voltage of 2.23 V, with a specific energy consumption of 5.7 kWh/m3 and an energy efficiency of 56.6%. The Faradaic efficiency is 96-99%. With the current density fixed at 400 mA/cm2, after performing a test for 150 h, the cell voltage with NiFe(+)/Ru(-) increases by 0.167 V, whereas that with NiFe(+)/NiFe(-) decreases by only 0.010 V. Good, long-term stability is demonstrated.

11.
Front Oncol ; 12: 1051148, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36465358

RESUMO

Background: Endothelial-mesenchymal transition (EndMT) is an important process of angiogenesis, which plays a significant role in in tumor invasion and metastasis, while its regulatory mechanisms in breast cancer remain to be fully elucidated. We previously demonstrated that tumor-associated macrophages (TAMs) can induce EndMT in endothelial cells by secreting CCL18 through the activation of the TGF-ß and Notch signaling pathways in breast cancer. This study was designed to study the role of EndMT in breast cancer angiogenesis and progression in order to explore the underlying mechanism. Methods: Immunohistochemistry (IHC) was used to evaluate the expression of microvascular density (MVD) and EndMT markers in breast cancer. TGF-ß1 was used to induce EndMT models of differentiated-endothelial breast cancer stem-like cells (BCSLCs). In vitro cell migration, proliferation and matrigel tube-formation assays, as well as in vivo nude mouse tumor-bearing model and nude mouse dorsal skinfold window chamber (DSWC) model, were utilized to investigate the effects in order to explore the mechanism of EndMT induced by TGF-ß1 on breast cancer progression. Results: In this study, we demonstrated that the EndMT markers were positively associated with MVD indicating unfavorable prognosis of invasive ductal carcinoma (IDC) patients. Functionally, TGF-ß1 promoted migration, proliferation and angiogenesis of differentiated-endothelial BCSLCs by inducing EndMT in vitro and promoted tumor growth and angiogenesis in vivo. Mechanically, we revealed TGF-ß1 induced EndMT by activation of TGF-ß and Notch signaling pathways with increase of p-Smad2/3 and Notch1 expression. Moreover, we found Snail and Slug were key factors of TGF-ß and Notch signaling pathways. Conclusion: Our findings elucidated the mechanism of TGF-ß1 in the promotion of angiogenesis and progression by EndMT in breast cancer.

12.
Int J Womens Health ; 14: 1821-1829, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36582617

RESUMO

Purpose: To use the triglyceride glucose (TyG) index to evaluate insulin resistance (IR) in patients with polycystic ovary syndrome (PCOS) and to explore alternative indicators for early identification of IR. Patients and Methods: This study included 114 patients with PCOS and 61 healthy volunteers. Pearson or Spearman correlations were calculated to compare the association between the TyG index and triglyceride glucose body mass index (TyG-BMI) with homeostatic model assessment for IR (HOMA-IR), homeostasis model assessment for ß-cell function (HOMA-ß), quantitative insulin sensitivity check index (QUICKI), and fasting glucose-to-insulin ratio (FG-IR). The receiver operating characteristic (ROC) curve was used to evaluate the sensitivity and specificity of the TyG index and TyG-BMI in identifying IR (defined as HOMA-IR ≥2.5) in patients with PCOS. Results: Correlation analyses revealed that the TyG index of the PCOS group was positively correlated with HOMA-IR (r=0.515, P<0.01) and HOMA-ß (r=0.348, P<0.01), but negatively correlated with QUICKI (r=-0.532, P<0.01) and FG-IR (r=-0.394, P<0.01). The ROC curve of IR defined by HOMA-IR showed that the AUC value of TyG-BMI was the highest, at 0.796 (95% confidence interval (CI): 0.710-0.866, P<0.001) when the cut-off point was 191.53, with 85.3% sensitivity and 73.9% specificity values. For the TyG index, the AUC was 0.781 (95% CI: 0.693-0.853, P<0.001) when 8.51 was the cut-off point, with a sensitivity of 63.2% and specificity of 87.0%. Conclusion: This study found that the TyG index and TyG-BMI performed better than traditional lipid ratios, such as triglycerides/high density lipoprotein cholesterol (TG/HDL-C), in predicting IR and may be used as markers of IR in Chinese patients with PCOS.

13.
Materials (Basel) ; 15(19)2022 Sep 24.
Artigo em Inglês | MEDLINE | ID: mdl-36233971

RESUMO

Terephthalic acid production plant uses liquid cobalt-manganese bromide as a catalyst. The waste catalyst is burned with exhaust gas and accumulated in fly ash, which is further pickled and impregnated with a sulfuric acid solution. The resultant solution is rich in cobalt and manganese metal ions with few metal impurities from other petroleum raw materials. An electrochemical reduction method is used to recover cobalt metal from the waste catalyst fly ash pickling solution of terephthalic acid. Various steps have been taken to remove impurities and extract and separate the required pure cobalt metal solution. Afterward, the process of electrolytic reduction smelting is conducted. Variables investigated include current density, electrolyte pH, electrode materials, and electrolytic cell diaphragms, among several others. Results show that the product purity can reach up to 99.84% for the electrolyte feed composition of 21.4 g L-1 Co, 38.2 g L-1 Na, and 2.02 g L-1 Mg.

14.
J Ovarian Res ; 15(1): 117, 2022 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-36303234

RESUMO

To characterize the gut bacteriome, mycobiome and serum metabolome profiles in polycystic ovary syndrome (PCOS) patients with normal/overweight individuals and evaluate a potential microbiota-related diagnostic method development for PCOS, 16S rRNA and ITS2 gene sequencing using 88 fecal samples and 87 metabolome analysis from serum samples are conducted and PCOS classifiers based on multiomics markers are constructed. There are significant bacterial, fungal community and metabolite differences among PCOS patients and healthy volunteers with normal/overweight individuals. Healthy individuals with overweight/obesity display less abnormal metabolism than PCOS patients and uniquely higher abundance of the fungal genus Mortierella. Nine bacterial genera, 4 predicted pathways, 11 fungal genera and top 30 metabolites are screened out which distinguish PCOS from healthy controls, with AUCs of 0.84, 0.64, 0.85 and 1, respectively. The metabolite-derived model is more accurate than the microbe-based model in discriminating normal BMI PCOS (PCOS-LB) from normal BMI healthy (Healthy-LB), PCOS-HB from Healthy-HB. Featured bacteria, fungi, predicted pathways and serum metabolites display higher associations with free androgen index (FAI) in the cooccurrence network. In conclusion, our data reveal that hyperandrogenemia plays a central role in the dysbiosis of intestinal microecology and the change in metabolic status in patients with PCOS and that its effect exceeds the role of BMI. Healthy women with high BMI showed unique microbiota and metabolic features.The priority of predictive models in discriminating PCOS from healthy status in this study were serum metabolites, fungal taxa and bacterial taxa.


Assuntos
Micobioma , Síndrome do Ovário Policístico , Humanos , Feminino , Sobrepeso/complicações , RNA Ribossômico 16S , Metaboloma , Bactérias/genética
15.
Prog Mol Biol Transl Sci ; 189(1): 259-326, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35595351

RESUMO

Cancer represents a leading cause of death, despite the rapid progress of cancer research, leading to urgent need for accurate preclinical model to further study of tumor mechanism and accelerate translational applications. Cancer cell lines cannot fully recapitulate tumors of different patients due to the lack of tumor complexity and specification, while the high technical difficulty, long time, and substantial cost of patient-derived xenograft model makes it unable to be used extensively for all types of tumors and large-scale drug screening. Patient-derived organoids can be established rapidly with a high success rate from many tumors, and precisely replicate the key histopathological, genetic, and phenotypic features, as well as therapeutic response of patient tumor. Therefore, they are extensively used in cancer basic research, biobanking, disease modeling and precision medicine. The combinations of cancer organoids with other advanced technologies, such as 3D bio-printing, organ-on-a-chip, and CRISPR-Cas9, contributes to the more complete replication of complex tumor microenvironment and tumorigenesis. In this review, we discuss the various methods of the establishment and the application of patient-derived organoids in diverse tumors as well as the limitations and future prospects of these models. Further advances of tumor organoids are expected to bridge the huge gap between bench and bedside and provide the unprecedented opportunities to advance cancer research.


Assuntos
Neoplasias , Organoides , Bancos de Espécimes Biológicos , Humanos , Neoplasias/patologia , Organoides/patologia , Medicina de Precisão/métodos , Microambiente Tumoral
16.
J Diabetes Res ; 2022: 9632355, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35586117

RESUMO

Objective: Emerging evidence demonstrates that vitamin D status contributes to the incidence of diabetic kidney disease (DKD). However, the causal relationships between vitamin D and mortality among individuals with DKD are inconclusive. Our study is aimed at exploring the relationship between serum 25-hydroxyvitamin D (25(OH)D) concentrations and mortality among adults with DKD. Research Design and Methods. Our study included 1,202 adult participants with DKD from the National Health and Nutrition Examination Survey (NHANES) 2001-2014. Cox and competing-risks regression were used to estimate hazard ratios (HRs) and 95% CIs for associations between 25(OH)D concentrations and survival. Results: The overall mean serum 25(OH)D concentration was 55.9 ± 26.3. Vitamin D deficiency (25(OH)D < 50 nmol/l), insufficiency group (50 ≤ 25(OH)D < 75 nmol/l), and sufficiency group (25(OH)D ≥ 75 nmol/l) were observed in 552 (45.9%), 409 (34.0%), and 241 (20.0%) participants, respectively. Higher levels of vitamin D were significantly associated with improved all-cause and nonaccident- and malignant neoplasm-cause mortality among individuals with DKD after adjusting for the potential confounding factors. Conclusions: We observed widespread vitamin D deficiency or insufficiency in DKD patients. Higher 25(OH)D values were significantly correlated with lower risk of mortality after adjusting for confounding variables.


Assuntos
Doenças Cardiovasculares , Diabetes Mellitus , Nefropatias Diabéticas , Deficiência de Vitamina D , Adulto , Doenças Cardiovasculares/epidemiologia , Nefropatias Diabéticas/complicações , Humanos , Inquéritos Nutricionais , Vitamina D , Deficiência de Vitamina D/complicações , Vitaminas
17.
Nano Lett ; 22(9): 3784-3792, 2022 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-35486490

RESUMO

Silver nanowires (AgNWs) have been considered as a promising candidate for transparent stretchable conductors (TSCs). However, the strong interface mismatch of stiff AgNWs and elastic substrates leads to the stress concentration at their interface and ultimately the low stretchability and poor durability of TSCs. Here, to address the interfacial mismatch of AgNWs-based TSCs we put forward a universal interface tailoring strategy that introduces the mercapto compound as the intermediate cross-linked layer. The mercapto compound strongly interacts with the AgNWs, forming a dense protective layer on their surface to improve their corrosion resistance, and reacts with the polymer substrate, forming a buffer layer to release the concentrated stress. As a result, the optimized TSCs showed superior stretchability (160%), exceptional durability (230 000 cycles), competent optoelectrical performance (18.0 ohm·sq-1 with a transmittance of 86.5%), and prominent stability. This work provides clear guidance and a strong impetus for the development of transparent stretchable electronics.

19.
Front Cell Infect Microbiol ; 12: 1089991, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36704100

RESUMO

Objectives: Recent studies have shown that fecal microbiota transplantation (FMT) improved the metabolic profiles of patients with type 2 diabetes mellitus (T2DM), yet the effectiveness in reversing insulin resistance and increasing metformin sensitivity in T2DM patients have not been reported. In this study, we evaluated the improvements of T2DM patients and their gut microbiota by FMT alone and FMT plus metformin. Methods: A total of 31 patients with newly diagnosed T2DM were randomized to intervention by metformin, FMT, or FMT plus metformin in the study. Patients were followed up at baseline and week 4 after treatment. Blood and stool samples were collected and subject to analyze clinical parameters and microbial communities by metagenomic sequencing, respectively. Results: FMT alone and FMT plus metformin significantly improved the clinical indicators HOMA-IR and BMI in T2DM, besides fasting blood glucose, postprandial blood glucose, and hemoglobin A1c that were also controlled by metformin. Donor microbiota effectively colonized in T2DM with slightly higher colonization ration in FMT than FMT plus metformin within 4 weeks, resulting in increased microbial diversity and community changes from baseline after treatment. A total of 227 species and 441 species were significantly alerted after FMT and FMT plus metformin, respectively. FMT were significantly associated with the clinical parameters. Among them, Chlorobium phaeovibrioides, Bifidibacterium adolescentis and Synechococcus sp.WH8103 were potential due to their significantly negative correlations with HOMA-IR. Conclusions: FMT with or without metformin significantly improve insulin resistance and body mass index and gut microbial communities of T2DM patients by colonization of donor-derived microbiota.


Assuntos
Diabetes Mellitus Tipo 2 , Resistência à Insulina , Metformina , Humanos , Transplante de Microbiota Fecal/métodos , Diabetes Mellitus Tipo 2/terapia , Estudos Prospectivos , Glicemia/metabolismo , Metformina/uso terapêutico , Fezes/microbiologia
20.
Dis Markers ; 2021: 2409820, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34795805

RESUMO

Enhancer RNAs (eRNAs), a subclass of noncoding RNAs from enhancers, have been demonstrated to exhibit important regulatory effects on the expressions of various genes. However, the role of eRNAs in skin cutaneous melanoma (SKCM) remained largely unclear. In this study, we aimed to explore the expression and prognostic value of an enhancer RNA TEX41 in SKCM as well as the associations between TEX41 and tumor-infiltrating immune cells (TICs). We observed that TEX41 expression was distinctly increased in SKCM specimens compared with normal skin specimens using GEPIA. Survival assays based on TGCA datasets revealed that patients with low TEX41 expressions displayed a longer overall survival than those with high TEX41 expression. CIBERSORT datasets revealed that TEX41 was related to 8 types of TICs (macrophages M1, T cells regulatory, plasma cells, mast cells resting, T cells CD8, dendritic cells resting, and T cells follicular helper). Three kinds of TICs were negatively related to TEX41 expressions, including macrophages M2, NK cells resting, and macrophages M0. The expressions of TEX41 were involved in five KEGG pathways, including transcriptional misregulation in cancer, SNARE interactions in vesicular transport, mitophagy-animal, melanoma, melanogenesis, and progesterone-mediated oocyte maturation. Overall, TEX41 can be used as a novel biomarker for the prognosis of SKCM patients and is associated with TICs, indicating it as a therapeutic target for SKCM.


Assuntos
Biomarcadores Tumorais/análise , Regulação Neoplásica da Expressão Gênica , Linfócitos do Interstício Tumoral/imunologia , Melanoma/imunologia , RNA Longo não Codificante/genética , Neoplasias Cutâneas/imunologia , Microambiente Tumoral , Linfócitos T CD8-Positivos/imunologia , Estudos de Casos e Controles , Humanos , Melanoma/genética , Melanoma/patologia , Prognóstico , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/patologia , Melanoma Maligno Cutâneo
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