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1.
Int J Biol Macromol ; 267(Pt 1): 131323, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38574912

RESUMEN

Sphingolipids serve as essential components of biomembrane and possess significant bioactive properties. Sphingosine-1-phophate (S1P) plays a key role in plant resistance to stress, but its specific impact on plant growth and development remains to be fully elucidated. Cotton fiber cells are an ideal material for investigating the growth and maturation of plant cells. In this study, we examined the content and composition of sphingosine (Sph) and S1P throughout the progression of fiber cell development. The content of S1P elevated gradually during fiber elongation but declined during the transition stage. Exogenous application of S1P promoted fiber elongation while using of FTY720 (an antagonist of S1P), and DMS (an inhibitor of LCBK) hindered fiber elongation. Cotton Long Chain Base Kinase 1 (GhLCBK1) was notably expressed during the fiber elongation stage, containing all conserved domains of LCBK protein and localized in the endoplasmic reticulum. Overexpression GhLCBK1 increased the S1P content and promoted fiber elongation while retarded secondary cell wall (SCW) deposition. Conversely, downregulation of GhLCBK1 reduced the S1P levels, and suppressed fiber elongation, and accelerated SCW deposition. Transcriptome analysis revealed that upregulating GhLCBK1 or applying S1P induced the expression of GhEXPANSIN and auxin related genes. Furthermore, the levels of IAA were elevated and reduced in the fibers when up-regulating or down-regulating GhLCBK1, respectively. Our investigation demonstrated that GhLCBK1 and its product S1P facilitated the elongation of fiber cells by affecting auxin biosynthesis. This study contributes novel insights into the intricate regulatory pathways involved in fiber cell elongation, identifying GhLCBK1 as a potential target gene and laying the groundwork for enhancing fiber quality via genetic manipulation.


Asunto(s)
Regulación de la Expresión Génica de las Plantas , Gossypium , Ácidos Indolacéticos , Lisofosfolípidos , Fosfotransferasas (Aceptor de Grupo Alcohol) , Esfingosina , Esfingosina/análogos & derivados , Esfingosina/metabolismo , Gossypium/genética , Gossypium/metabolismo , Fosfotransferasas (Aceptor de Grupo Alcohol)/metabolismo , Fosfotransferasas (Aceptor de Grupo Alcohol)/genética , Ácidos Indolacéticos/metabolismo , Ácidos Indolacéticos/farmacología , Regulación de la Expresión Génica de las Plantas/efectos de los fármacos , Lisofosfolípidos/metabolismo , Fibra de Algodón , Proteínas de Plantas/metabolismo , Proteínas de Plantas/genética , Pared Celular/metabolismo , Pared Celular/efectos de los fármacos
2.
Adv Sci (Weinh) ; : e2308820, 2024 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-38634253

RESUMEN

Serving as the cell's sensory antennae, primary cilia are linked to numerous human genetic diseases when they malfunction. DZIP1L, identified as one of the genetic causes of human autosomal recessive polycystic kidney disease (ARPKD), is an evolutionarily conserved ciliary basal body protein. Although it has been reported that DZIP1L is involved in the ciliary entry of PKD proteins, the underlying mechanism remains elusive. Here, an uncharacterized role of DZIP1L is reported in modulating the architecture and function of transition fibers (TFs), striking ciliary base structures essential for selective cilia gating. Using C. elegans as a model, C01G5.7 (hereafter termed DZIP-1) is identified as the sole homolog of DZIP1L, which specifically localizes to TFs. While DZIP-1 or ANKR-26 (the ortholog of ANKRD26) deficiency shows subtle impact on TFs, co-depletion of DZIP-1 and ANKR-26 disrupts TF assembly and cilia gating for soluble and membrane proteins, including the ortholog of ADPKD protein polycystin-2. Notably, the synergistic role for DZIP1L and ANKRD26 in the formation and function of TFs is highly conserved in mammalian cilia. Hence, the findings illuminate an evolutionarily conserved role of DZIP1L in TFs architecture and function, highlighting TFs as a vital part of the ciliary gate implicated in ciliopathies ARPKD.

3.
Eur J Protistol ; 94: 126081, 2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38626537

RESUMEN

Periphytic protists including ciliates are the primary components of microbial communities in which they play a vital role in the progression of food webs by moving resources from lower to higher trophic levels. However, the toxic effects of veterinary antibiotics on periphytic protists across four seasons are minimally understood. Therefore, in this study, a 1-year survey was conducted with the antibiotic nitrofurazone (NFZ) applied at concentrations of 0.0, 1.5, 3.0, 6.0, and 12.0 mg/L. Samples of protist communities were collected using microscope glass slides during four seasons in the coastal waters of the Yellow Sea, Qingdao, northern China. The abundance of protists dropped with an increase in NFZ concentrations, and almost all species were dead at a concentration of 12.0 mg/L. The 12 h-LC50 values of NFZ for the protist biota were similar among the four seasons, despite significant seasonal variability in the community structure. The present results suggest that the periphytic protist biota may be used as a biomarker for assessing the ecotoxicity of NFZ in marine environments regardless of the year season.

4.
Front Public Health ; 12: 1279293, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38496394

RESUMEN

Background: During the coronavirus disease-2019 (COVID-19) pandemic, there have been many studies on knowledge, attitudes, and practices (KAP) toward prevention of COVID-19 infection in China. Except for symptomatic treatment and vaccination, KAP toward COVID-19 plays an important role in the prevention of COVID-19. There is no systematic evaluation and meta-analysis of KAP toward COVID-19 in China. This study is the earliest meta-analysis of KAP toward COVID-19 in China's general population. Hence, this systematic review aimed to summarize the knowledge, attitudes, and practices (KAP) of Chinese residents toward COVID-19 during the pandemic. Methodology: Following the PRISMA guidelines, articles relevant to COVID-19 KAP that were conducted among the Chinese population were found in databases such as Scopus, ProQuest, PubMed, EMbase, Web of Science, Cochrane Library, China Biology Medicine, China National Knowledge Infrastructure, CQVIP, Wanfang and Google Scholar. A random-effect meta-analysis is used to summarize studies on knowledge, attitudes, and practice levels toward COVID-19 infection in China's general population. Results: Fifty-seven articles published between August 2020 and November 2022 were included in this review. Overall, 75% (95% CI: 72-79%) of Chinese residents had good knowledge about COVID-19, 80% (95% CI: 73-87%) of Chinese residents had a positive attitude toward COVID-19 pandemic control and prevention (they believe that Chinese people will win the battle against the epidemic), and the aggregated proportion of residents with a correct practice toward COVID-19 was 84% (95% CI: 82-87%, I2 = 99.7%).In the gender subgroup analysis, there is no significant difference between Chinese men and Chinese women in terms of their understanding of COVID-19. However, Chinese women tend to have slightly higher levels of knowledge and a more positive attitude toward the virus compared to Chinese men. When considering the urban and rural subgroup analysis, it was found that Chinese urban residents have a better understanding of COVID-19 compared to Chinese rural residents. Interestingly, the rural population displayed higher rates of correct behavior and positive attitudes toward COVID-19 compared to the urban population. Furthermore, in the subgroup analysis based on different regions in China, the eastern, central, and southwestern regions exhibited higher levels of knowledge awareness compared to other regions. It is worth noting that all regions in China demonstrated good rates of correct behavior and positive attitudes toward COVID-19. Conclusion: This study reviews the level of KAP toward COVID-19 during the pandemic period in China. The results show that the KAP toward COVID-19 in Chinese residents was above a favorable level, but the lack of translation of knowledge into practice should be further reflected on and improved. A subgroup analysis suggests that certain groups need more attention, such as males and people living in rural areas. Policy makers should pay attention to the results of this study and use them as a reference for the development of prevention and control strategies for major public health events that may occur in the future. Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=348246, CRD42022348246.


Asunto(s)
COVID-19 , Pueblos del Este de Asia , Masculino , Humanos , Femenino , COVID-19/epidemiología , Pandemias/prevención & control , Encuestas y Cuestionarios , Conocimientos, Actitudes y Práctica en Salud , China/epidemiología
5.
Artículo en Inglés | MEDLINE | ID: mdl-38551423

RESUMEN

Objective: This study aims to investigate the impact of ultrasound-guided combined with water and air mixed injection method for nasal intestinal tube placement on gastrointestinal burden in patients with severe acute pancreatitis. Methods: A cohort of 116 patients with severe acute pancreatitis admitted to the hospital from August 2021 to July 2023 were included. They were randomly divided into the control group (58 cases, nasal intestinal tube placement using ultrasound-guided combined water injection) and the observation group (58 cases, nasal intestinal tube placement using ultrasound-guided combined with water and air mixed injection). The incubation time, volume of water injected during the incubation, nasal intestinal tube visualization rate, and success rate of one-time incubation were recorded for both groups. Gastrointestinal mucosal barrier function, Nutritional index level including intestinal fatty acid-binding protein (I-FABP), D-lactate and nutritional index levels including hemoglobin (Hb), serum albumin (ALB), retinol-binding protein (RBP) were compared between the two groups before tube placement and at 7 days after incubation. Complications in both groups were also recorded. Results: The incubation time in the observation group was shorter, and the volume of water injected during the incubation was lower than in the control group. The nasal intestinal tube visualization rate and success rate of one-time incubation were higher in the observation group (P < .05). At 7 days after incubation, the levels of I-FABP and D-lactate were lower in the observation group than in the control group (P < .05). At 7 days after incubation, The levels of I-FABP and D-lactate in the observation group were lower than those in the control group, Hb and RBP levels were higher in the observation group than in the control group (P < .05), while there was no significant difference in ALB levels between the two groups (P > .05). The incidence of complications was lower in the observation group than in the control group (P < .05). Conclusion: Ultrasound-guided combined with water and air mixed injection method for nasal intestinal tube placement in patients with severe acute pancreatitis can shorten the incubation time, reduce the volume of water injected during the incubation, improve the nasal intestinal tube visualization rate and success rate of one-time incubation, enhance gastrointestinal mucosal barrier function and nutritional index in patients, and reduce the incidence of complications.

6.
PLoS Biol ; 22(3): e3002330, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38442096

RESUMEN

Cilia play critical roles in cell signal transduction and organ development. Defects in cilia function result in a variety of genetic disorders. Cep290 is an evolutionarily conserved ciliopathy protein that bridges the ciliary membrane and axoneme at the basal body (BB) and plays critical roles in the initiation of ciliogenesis and TZ assembly. How Cep290 is maintained at BB and whether axonemal and ciliary membrane localized cues converge to determine the localization of Cep290 remain unknown. Here, we report that the Cep131-Cep162 module near the axoneme and the Cby-Fam92 module close to the membrane synergistically control the BB localization of Cep290 and the subsequent initiation of ciliogenesis in Drosophila. Concurrent deletion of any protein of the Cep131-Cep162 module and of the Cby-Fam92 module leads to a complete loss of Cep290 from BB and blocks ciliogenesis at its initiation stage. Our results reveal that the first step of ciliogenesis strictly depends on cooperative and retroactive interactions between Cep131-Cep162, Cby-Fam92 and Cep290, which may contribute to the complex pathogenesis of Cep290-related ciliopathies.


Asunto(s)
Cuerpos Basales , Cognición , Animales , Señales (Psicología) , Axonema , Cilios/genética , Drosophila/genética
7.
Front Pharmacol ; 15: 1243353, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38482051

RESUMEN

Introduction: Gypenoside is a natural extract of Gynostemma pentaphyllum (Thunb.) Makino, a plant in the Cucurbitaceae family. It has been reported to have antitumor effects on the proliferation, migration and apoptosis of various types of cancer cells. However, the use of gypenoside in the treatment of gastric cancer has not been studied. In the present study, we explored the therapeutic effect of gypenoside on gastric cancer and the potential molecular mechanism. Methods and Results: Our results showed that gypenoside induced apoptosis in HGC-27 and SGC-7901 cells in a time-dependent and dose-dependent manner. Network pharmacology analyses predicted that gypenoside exerts its therapeutic effects through the PI3K/AKT/mTOR signaling pathway. Furthermore, molecular docking and western blot experiments confirmed that gypenoside induced the apoptosis of gastric cancer cells through the PI3K/AKT/mTOR signaling pathway. In addition, network pharmacological analysis revealed that the common targets of gypenoside in gastric cancer were enriched in the immune effector process, PD-L1 expression, the PD-1 checkpoint pathway, and the Jak-STAT signaling pathway. Furthermore, molecular docking and western blot assays demonstrated that gypenoside could bind to STAT3 and reduce its phosphorylation. Thus, the transcription of PD-L1 was inhibited in gastric cancer cells. Moreover, coculture experiments of gastric cancer cells with gypenoside and primary mouse CD8+ T cells showed that gastric cancer cells treated with gypenoside could enhance the antitumor ability of T cells. Animal experiments confirmed the antitumor effect of gypenoside, and the expression of PD-L1 was significantly downregulated in the gypenoside-treated group. Conclusion: Gypenoside induced the apoptosis of gastric cancer cells by inhibiting the PI3K/AKT/mTOR pathway and simultaneously inhibited the expression of PD-L1 in gastric cancer cells, thus enhancing the antitumor immunity of T cells. This study provides a theoretical basis for applying gypenoside as a new therapeutic agent to enhance the efficacy of immunotherapy in gastric cancer.

8.
Geriatr Gerontol Int ; 24(4): 415-420, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38445411

RESUMEN

AIM: The aim of this clinical study was to explore the effects of thumb-tack needling combined with sporting (TTNS) therapy on the improvement of pain and joint function in older adult patients with knee osteoarthritis (KOA). METHODS: A total of 120 older adult patients with KOA were randomly assigned to receive TTNS therapy or medicine treatment (Med group) only for 1 month. The patients were followed up for 3 months and clinical efficacies were evaluated using a visual analog scale to assess pain, the Lequesne scoring system to assess motor function, and the Western Ontario and McMaster University Osteoarthritis Index to assess KOA severity. Blood was collected to measure the levels of interleukin-6 and tumor necrotic factor-alpha using enzyme-linked immunosorbent assay. RESULTS: The data suggested that TTNS therapy resulted in a significantly higher clinical efficacy (P = 0.012). Visual analog scale score, Lequesne index, and Western Ontario and McMaster University Osteoarthritis Index of the TTNS group at the time of post-treatment (1 month) and post-follow-up (3 months) were also lower compared with the Med group. Patients in the TTNS group also showed lower levels of serum tumor necrotic factor-alpha and interleukin-6. CONCLUSIONS: TTNS therapy is more efficacious than pharmacological treatment in improving the clinical outcomes of patients with KOA, which suggests its clinical utility in the management of KOA. Geriatr Gerontol Int 2024; 24: 415-420.


Asunto(s)
Neoplasias , Osteoartritis de la Rodilla , Humanos , Anciano , Osteoartritis de la Rodilla/terapia , Pulgar , Interleucina-6/uso terapéutico , Inducción Percutánea del Colágeno , Dolor , Resultado del Tratamiento
9.
Neoplasia ; 48: 100966, 2024 02.
Artículo en Inglés | MEDLINE | ID: mdl-38237304

RESUMEN

Although immune checkpoint therapy has significantly improved the prognosis of patients with melanoma, urgent attention still needs to be paid to the low patient response rates and the challenges of precisely identifying patients before treatment. Therefore, it is crucial to investigate novel immunosuppressive mechanisms and targets in the tumor microenvironment in order to reverse tumor immune escape. In this study, we found that the cell cycle checkpoint Aurora kinase B (AURKB) suppressed the anti-tumor immune response, and its inhibitor, Tozasertib, effectively activated T lymphocyte cytokine release in vitro and anti-tumor immunity in vivo. Tozasertib significantly inhibited melanoma xenograft tumor growth by decreasing the number of inhibitory CD4+ Treg cells in the tumors, which, in turn, activated CD8+ T cells. Single-cell analysis revealed that AURKB suppressed anti-tumor immunity by increasing MIF-CD74/CXCR4 signaling between tumor cells and lymphocytes. Our study suggests that AURKB is a newly identified anti-tumor immunity suppressor, whose inhibitors may be developed as novel anti-tumor immunity drugs and may have synergistic anti-melanoma effects with immune checkpoint therapies.


Asunto(s)
Antineoplásicos , Melanoma , Humanos , Melanoma/patología , Linfocitos T Reguladores , Linfocitos T CD8-positivos , Antineoplásicos/uso terapéutico , Microambiente Tumoral
10.
Environ Sci Pollut Res Int ; 31(9): 13327-13334, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38244160

RESUMEN

The pollution of microplastics (MPs) to the marine environment has become a widespread focus of attention. To assess MP-induced ecotoxicity on marine ecosystems, periphytic protozoan communities were used as test organisms and exposed to five concentrations of MPs: 0, 1, 5, 25, and 125 mg l-1. Protozoan samples were collected using microscope slides from coastal waters of the Yellow Sea, northern China. A total of 13 protozoan species were identified and represented different tolerance to MP-induced ecotoxicity. Inhibition effects of MPs on the test protozoan communities were clearly shown in terms of both the species richness and individual abundance and followed linear relationships to MP concentrations. The community patterns were driven by MPs and significantly shifted at concentrations over 5 mg l-1. Our findings demonstrated that MPs may induce the community-level ecotoxic response of periphytic protozoan fauna and followed significant community dynamics. Thus, it is suggested that periphytic protozoan fauna may be used as useful community-based test model organisms for evaluating MP-induced ecotoxicity in marine environments.


Asunto(s)
Cilióforos , Contaminantes Químicos del Agua , Ecosistema , Biodiversidad , Monitoreo del Ambiente , Microplásticos , Plásticos , Cilióforos/fisiología , Contaminantes Químicos del Agua/toxicidad
11.
Mar Pollut Bull ; 199: 116017, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38190786

RESUMEN

As a powerful biological indicator, multivariate dispersion in a community is widely used to evaluate the biological evaluation of environmental heterogeneity. To investigate the effects of persistent warming on microbial fauna in marine environments, the periphytic protozoan communities were used as test organisms and incubated in five temperature-controlled circulation system at 22 (control), 25, 28, 31 and 34 °C, respectively. The results showed that (1) there was a clear variation in species occurrence, and the α-/γ-diversity measures decreased with the increase of temperatures; (2) the compositional pattern was significantly driven by the persistent warming compared to community pattern from species-abundance data; and (3) both traditional ß-diversity and multivariate dispersion measures on species compositional matrix were significantly correlative with changes in the temperature. Therefore, it is suggested that continuous temperature fluctuations have a greater impact on homogeneity of species composition of protozoan communities than that of their community structure.


Asunto(s)
Ecosistema , Biomarcadores Ambientales , Temperatura
12.
Explore (NY) ; 20(2): 158-167, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37640591

RESUMEN

INTRODUCTION: Irinotecan is a novel first-line therapy for colorectal cancer, but the toxicity and side effects include diarrhea without satisfactory treatments. Chinese herbal decoction (CHD) is an effective complementary and alternative prevention and therapy for irinotecan induced diarrhea (IID). This systematic review and meta-analysis of randomized controlled trials (RCTs) aims to assess the preventive effect of CHD in the treatment of IID. METHODS: Seven databases (PubMed, COCHRANE, EMBASE, CNKI, VIP, Wanfang, and CBM) were screened for random controlled trials on the prevention and treatment of IID by CHD from January 1980 to May 2022. The Cochrane Collaboration Risk of Bias (ROB 2.0) was applied for bias risk assessment, and the Grading Recommendation Assessment, Development, and Evaluation (GRADE) for quality of evidence. Meta-analysis was conducted with RevMan 5.3 software. In addition, a subgroup analysis was conducted on different grades of diarrhea, the incidence and duration of diarrhea, the selection of specific Chinese herbal medicine decoction, and the incidence of adverse reactions. Risk ratios (RR) and 95% confidence intervals (CIs) were calculated for all data by combining the meta-analysis with fixed or random-effects models based on outcome heterogeneity. RESULTS: Fourteen RCTs involving 1056 participants were included. The study results displayed that the incidence of IID was lower with the use of CHD than the no-treatment group (RR = 0.55, 95% CI = 0.40-0.75, P = 0.0002). CHD in combination with western medicine (WM) was more effective than WM alone for IID (RR = 0.44, 95% CI 0.23-0.84, P = 0.01). This protective effect was more pronounced for severe grade III-V diarrhea (RR = 0.41, 95% CI = 0.26-0.64, P < 0.0001). In the specific Chinese herbal medicine decoction, the Banxia Xie Xin decoction presented better effectiveness (RR = 0.18, 95% CI: 0.05-0.63, P = 0.007) than WM alone. The Huangqin decoction was the most widely studied interventional scheme (n = 5). The relative risk (RR) of the Huangqin decoction was 0.56. No obvious adverse reactions were observed. CONCLUSION: This study demonstrated that CHD has a preventive effect on IID and could be used as a complementary therapy with few side effects. However, additional large-sample, high-quality, randomized, double-blind trials are needed to guide the clinical practice scientifically. SYSTEMATIC REVIEW REGISTRATION: www.crd.york.ac.uk/prospero (NO: CRD42020189506).


Asunto(s)
Terapias Complementarias , Medicamentos Herbarios Chinos , Medicina , Humanos , Medicamentos Herbarios Chinos/uso terapéutico , Irinotecán/efectos adversos , Diarrea/inducido químicamente , Diarrea/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto
13.
Cell Host Microbe ; 32(1): 63-78.e7, 2024 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-38056459

RESUMEN

Propionate is a short-chain fatty acid that is generated upon microbiome-mediated fiber fermentation in the intestine. By modulating immune and metabolic pathways, propionate exerts many health benefits. Key bacterial species, such as Bacteroides thetaiotaomicron, generate propionate, but the biochemical pathways and specific functions remain undetermined. We identified a gene operon-encoding methylmalonyl-CoA mutase (MCM) that contributes to propionate biosynthesis in B. thetaiotaomicron. Colonization of germ-free mice with wild-type or MCM-deficient strains as well as in vitro examination demonstrated that MCM-mediated propionate production promotes goblet cell differentiation and mucus-related gene expression. Intestinal organoids lacking the propionate receptor, GPR41, showed reduced goblet cell differentiation upon MCM-mediated propionate production. Furthermore, although wild-type B. thetaiotaomicron alleviated DSS-induced intestinal inflammation, this effect was abolished in mice receiving the MCM-deficient strain but restored upon propionate supplementation. These data emphasize the critical role of MCM-mediated propionate biosynthesis in goblet cell differentiation, offering potential pathways to ameliorate colitis.


Asunto(s)
Metilmalonil-CoA Mutasa , Propionatos , Ratones , Animales , Metilmalonil-CoA Mutasa/genética , Metilmalonil-CoA Mutasa/metabolismo , Propionatos/farmacología , Propionatos/metabolismo , Bacteroides/metabolismo , Diferenciación Celular , Homeostasis
14.
Mar Pollut Bull ; 198: 115882, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38096695

RESUMEN

To investigate effects of salinity variability on colonization dynamics of periphytic protozoan fauna, a 21-day study was conducted in temperature-controlled circulation systems (TCCSs). Periphytic protozoan communities were incubated using glass slides as artificial substrata in five TCCS aquaria with a large-scale salinity gradient of 9, 19, 29 (control), 39, and 49 PSU, respectively. The colonization dynamics were observed on days 3, 5, 7, 10, 14, and 21. The colonization dynamics were well fitted to the MacArthur-Wilson and logistic model equations in colonization and growth curves in all five treatments, respectively. However, the maximum species richness and abundance were reduced, and the colonization patterns were significantly shifted in four treatments with salinity changed by 20 PSU compared to the control (29 PSU). Thus, it is suggested that the large-scale salinity variability may reduce the species richness significantly and affect colonization dynamics of periphytic protozoan fauna in marine environments.


Asunto(s)
Biodiversidad , Cilióforos , Monitoreo del Ambiente , Salinidad , Modelos Logísticos , Ecosistema
15.
Front Endocrinol (Lausanne) ; 14: 1277035, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38027127

RESUMEN

Aims: We aimed to investigate changes of fecal short chain fatty acids (SCFAs) and their association with metabolic benefits after sleeve gastrectomy (SG). Specifically, whether pre-surgery SCFAs modify surgical therapeutic effects was determined. Methods: 62 participants with measurements of fecal SCFAs and metabolic indices before and 1, 3, 6 months after SG were included. Changes of fecal SCFAs and their association with post-surgery metabolic benefits were calculated. Then, participants were stratified by medians of pre-surgery fecal SCFAs and modification effects of pre-surgery fecal SCFAs on surgical therapeutic effects were investigated, through calculating interaction of group by surgery. Results: Fecal SCFAs were markedly changed by SG. Changes of propionate and acetate were positively correlated with serum triglycerides and total cholesterol, respectively. Notably, high pre-surgery fecal hexanoate group showed a better effect of SG treatment on lowering body weight (P=0.01), BMI (P=0.041) and serum triglycerides (P=0.031), and low pre-surgery fecal butyrate had a better effect of SG on lowering ALT (P=0.003) and AST (P=0.019). Conclusion: Fecal SCFAs were changed and correlated with lipid profiles improvement after SG. Pre-surgery fecal hexanoate and butyrate were potential modifiers impacting metabolic benefits of SG.


Asunto(s)
Caproatos , Ácidos Grasos Volátiles , Humanos , Butiratos , Triglicéridos , Gastrectomía
16.
Gut Microbes ; 15(2): 2274124, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37942583

RESUMEN

The gut microbiota interacts with intestinal epithelial cells through microbial metabolites to regulate the release of gut hormones. We investigated whether the gut microbiota affects the postprandial glucagon-like peptide-1 (GLP-1) response using antibiotic-treated mice and germ-free mice. Gut microbiome depletion completely abolished postprandial GLP-1 response in the circulation and ileum in a lipid tolerance test. Microbiome depletion did not influence the GLP-1 secretory function of primary ileal cells in response to stimulators in vitro, but dramatically changed the postprandial dynamics of endogenous bile acids, particularly ω-muricholic acid (ωMCA) and hyocholic acid (HCA). The bile acid receptor Takeda G protein-coupled receptor 5 (TGR5) but not farnesoid X receptor (FXR), participated in the regulation of postprandial GLP-1 response in the circulation and ileum, and ωMCA or HCA stimulated GLP-1 secretion via TGR5. Finally, fecal microbiota transplantation or ωMCA and HCA supplementation restored postprandial GLP-1 response. In conclusion, gut microbiota is indispensable for maintaining the postprandial GLP-1 response specifically in the ileum, and bile acid (ωMCA and HCA)-TGR5 signaling is involved in this process. This study helps to understand the essential interplay between the gut microbiota and host in regulating postprandial GLP-1 response and opens the foundation for new therapeutic targets.


Asunto(s)
Microbioma Gastrointestinal , Péptido 1 Similar al Glucagón , Ratones , Animales , Péptido 1 Similar al Glucagón/metabolismo , Transducción de Señal , Receptores Acoplados a Proteínas G/genética , Receptores Acoplados a Proteínas G/metabolismo , Ácidos y Sales Biliares , Íleon
17.
Psychol Res Behav Manag ; 16: 4501-4514, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37936972

RESUMEN

Aim: This study aimed to investigate the relationship between parenting practices and creativity (both general and malignant creativity) in a representative sample of college students in China, and to explore the potential mediating role of resilience. Methods: The study was conducted among 1201 Chinese college students who completed questionnaires on parenting practices, creativity, and resilience. The parenting practices were assessed using the short-form Egna Minnen av Barndoms Uppfostran for Chinese, while creativity was measured using the Malevolent Creativity Behavior Scale and the Runco Ideational Behavior Scale. The Connor-Davidson Resilience Scale was used to assess resilience. Results: The results showed that parental warmth had a positive correlation with general creativity, but a negative correlation with malevolent creativity. In contrast, parental rejection and over-protection had a negative correlation with general creativity, but a positive correlation with malevolent creativity. Furthermore, resilience fully mediated the relationship between emotional warmth, rejection, and general creativity, and partially mediated the relationship between over-protection and general creativity and between all parenting practices and malevolent creativity. Conclusion: These findings suggest that parenting practices have a significant impact on creativity, and the type of creativity manifested may depend on the specific parenting practices. Additionally, the study highlights the importance of resilience as a potential mediator in the relationship between parenting practices and creativity. The implications of these findings for parenting practices and interventions to foster creativity and resilience are discussed.

18.
Nat Commun ; 14(1): 5953, 2023 Sep 23.
Artículo en Inglés | MEDLINE | ID: mdl-37741844

RESUMEN

Developing versatile, scalable, and durable coatings that resist the accretion of matters (liquid, vapor, and solid phases) in various operating environments is important to industrial applications, yet has proven challenging. Here, we report a cellular coating that imparts liquid-repellence, vapor-imperviousness, and solid-shedding capabilities without the need for complicated structures and fabrication processes. The key lies in designing basic cells consisting of rigid microshells and releasable nanoseeds, which together serve as a rigid shield and a bridge that chemically bonds with matrix and substrate. The durability and strong resistance to accretion of different matters of our cellular coating are evidenced by strong anti-abrasion, enhanced anti-corrosion against saltwater over 1000 h, and maintaining dry in complicated phase change conditions. The cells can be impregnated into diverse matrixes for facile mass production through scalable spraying. Our strategy provides a generic design blueprint for engineering ultra-durable coatings for a wide range of applications.

19.
J Cancer Res Clin Oncol ; 149(12): 10377-10386, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37273109

RESUMEN

PURPOSE: Volatile organic compounds (VOCs) have shown great potential as novel biomarkers for cancer detection; however, comprehensive quantitative analysis is lacking. In this study, we performed a bibliometric analysis of non-invasive cancer diagnosis using VOCs to better characterise international trends and to predict future hotspots in this field, and then we focussed on human studies to analyse clinical characteristics for presenting the current controversies and future perspectives of further clinical work. METHODS: Publications, from 2002 to 2022, were retrieved from the Web of Science Core Collection database. CiteSpace and VOSviewer were used to generate network maps and identify the annual publications, top countries, authors, institutions, journals, references, and keywords. Then, we further screened clinical trials, and the key information was extracted into Microsoft Excel for further systematical analysis. RESULTS: Six hundred and forty-one articles were identified to evaluate research trends, of which 301 clinical trials were selected for further systematical analysis. Overall, the annual publications in this area increased, with an overall upward trend, while the quality of clinical research remains remarkably uneven. CONCLUSION: The study of non-invasive cancer diagnosis using VOCs would continue to be an active field. However, without stringent clinical design criteria, most suitable acquisition and analysis devices and statistical approaches, a list of exclusive, specific, reliable and reproducible VOCs to identify a disease and these VOCs appearing in a breath at detectable levels at early stage disease, the clinical utility of VOC tests will be difficult to have any breakthroughs.


Asunto(s)
Líquidos Corporales , Neoplasias , Compuestos Orgánicos Volátiles , Humanos , Neoplasias/diagnóstico , Bases de Datos Factuales
20.
J Med Virol ; 95(6): e28860, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37310118

RESUMEN

Human leukocyte antigen (HLA) molecules are essential for presenting Epstein-Barr virus (EBV) antigens and are closely related to nasopharyngeal carcinoma (NPC). This study aims to systematically investigate the association between HLA-bound EBV peptides and NPC risk through in silico HLA-peptide binding prediction. A total of 455 NPC patients and 463 healthy individuals in NPC endemic areas were recruited, and HLA-target sequencing was performed. HLA-peptide binding prediction for EBV, followed by peptidome-wide logistic regression and motif analysis, was applied. Binding affinity changes for EBV peptides carrying high-risk mutations were analyzed. We found that NPC-associated EBV peptides were significantly enriched in immunogenic proteins and core linkage disequilibrium (LD) proteins related to evolution, especially those binding HLA-A alleles (p = 3.10 × 10-4 for immunogenic proteins and p = 8.10 × 10-5 for core LD proteins related to evolution). These peptides were clustered and showed binding motifs of HLA supertypes, among which supertype A02 presented an NPC-risk effect (padj = 3.77 × 10-4 ) and supertype A03 presented an NPC-protective effect (padj = 4.89 × 10-4 ). Moreover, a decreased binding affinity toward risk HLA supertype A02 was observed for the peptide carrying the NPC-risk mutation BNRF1 V1222I (p = 0.0078), and an increased binding affinity toward protective HLA supertype A03 was observed for the peptide carrying the NPC-risk mutation BALF2 I613V (p = 0.022). This study revealed the distinct preference of EBV peptides for binding HLA supertypes, which may contribute to shaping EBV population structure and be involved in NPC development.


Asunto(s)
Infecciones por Virus de Epstein-Barr , Neoplasias Nasofaríngeas , Humanos , Epítopos , Herpesvirus Humano 4/genética , Infecciones por Virus de Epstein-Barr/complicaciones , Infecciones por Virus de Epstein-Barr/genética , Carcinoma Nasofaríngeo/genética , Antígenos de Histocompatibilidad Clase II , Neoplasias Nasofaríngeas/genética
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