388 results match your criteria: "Center for Experimental Research[Affiliation]"

Expression and relationship of PD-L1, CD24, and CD47 in hepatitis B virus associated hepatocellular carcinoma.

Sci Rep

December 2024

Department of Gastroenterology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, Fujian, China.

Immune checkpoint inhibitor (ICI) therapy is the new standard treatment for advanced or metastatic hepatocellular carcinoma (HCC); however, many patients still fail to respond. This study explored the expression and prognosis of programmed death ligand 1 (PD-L1), cluster of differentiation 24 (CD24), and cluster of differentiation 47 (CD47) in patients with hepatitis B virus-associated HCC (HBV-associated HCC). We analyzed sequencing data from the Cancer Genome Atlas (TCGA) and investigated the expression of PD-L1, CD24, and CD47 in HBV-associated HCC patients by immunohistochemistry and their relationship with prognosis and clinicopathological factors.

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EMC2 suppresses ferroptosis via regulating TFRC in nasopharyngeal carcinoma.

Transl Oncol

December 2024

Shengli Clinical Medical College of Fujian Medical University, Department of Otolaryngology, Head and Neck Surgery, Fujian Provincial Hospital, Fuzhou 350001, China. Electronic address:

Background: Nasopharyngeal carcinoma (NPC) is an epithelial malignancy with poorly understood underlying molecular mechanisms. Ferroptosis, a form of programmed cell death, is not fully elucidated in NPC.

Method: We conducted quantitative proteomics to detect dysregulated proteins in NPC tissues.

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Chicks make stochastic decisions based on gain rates of different time constants.

Behav Processes

December 2024

Department of Biology, Faculty of Science, Hokkaido University, Sapporo, Japan; Faculty of Pharmaceutical Science, Health Science University of Hokkaido, Tobetsu, Japan; Centre for Mind/Brain Sciences, University of Trento, Rovereto, Italy.

The marginal value theorem (MVT) predicts that optimal foragers leave a patch when the instantaneous gain rate decreases to the average long-term gain rate. However, various animals systematically deviate from this optimum by staying too long or overharvesting relative to this optimum. We hypothesised that animals do not represent their optimal stay time but instead determine their departure point probabilistically.

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Synthesis and anti-tumor activity of menthylamine derivatives: Focusing on the potent inhibitory effect of compound W8 on glioma growth.

Bioorg Med Chem

January 2025

Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou 350108, China; Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Fujian Medical University, Fuzhou 350108, China. Electronic address:

In this work, we successfully synthesized eight distinct compounds, comprising four chiral menthylamines and related derivatives. We evaluated their cytotoxic potential against a panel of human cancer cell lines, including human colon cancer HCT-116 cells, human esophageal squamous KYSE-150 cells, human breast cancer MCF-7 cells, and human glioma U87 cells. The U87 cells were chosen for a more in-depth investigation of their anti-tumor efficacy.

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Gut microbiota and gut-derived metabolites are altered and associated with dietary intake in women with polycystic ovary syndrome.

J Ovarian Res

November 2024

Postgraduate Program in Endocrinology and Metabolism, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, 90035-003, Brazil.

Background: Disturbances in the gut microbiota may act as mechanisms influencing the interplay between dietary factors and metabolic disorders. Studies have demonstrated that these alterations are associated with the diagnosis of polycystic ovary syndrome (PCOS). Within this context, we aimed to investigate associations between gut microbiota, gut-derived metabolites (short-chain fatty acids [SCFAs] and indole-3-propionic acid [IPA]), and dietary intake in women with PCOS.

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The incidence of hepatocellular carcinoma (HCC) has been rising, particularly among individuals diagnosed with metabolic dysfunction-associated steatotic liver disease. In the present study, the prophylactic effects of rifaximin (RIF) on HCC, inflammatory markers and cardiovascular risk (CVR) were investigated in an animal model. Adult Sprague-Dawley rats were randomly allocated into three groups (n=10, each): Control [standard diet/water plus gavage with vehicle (Veh)], HCC [high-fat choline deficient diet (HFCD)/diethylnitrosamine (DEN) in drinking water/Veh gavage] and RIF [HFCD/DEN/RIF (50 mg/kg/day) gavage] groups.

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3,3'-Diindolylmethane promotes bone formation - A assessment in MC3T3-E1 cells and zebrafish.

Biochem Pharmacol

December 2024

Department of Preventive Medicine and Public Health Laboratory Science, School of Medicine, Jiangsu University, Zhenjiang, China. Electronic address:

Article Synopsis
  • Osteoporosis is a prevalent bone disease among older adults, and current treatments often have side effects, prompting interest in safer alternatives like phytochemicals.
  • 3,3'-diindolemethane (DIM), found in cruciferous vegetables, shows promise as a compound that promotes bone formation and may be more effective than existing medications.
  • The study demonstrated that DIM enhances the growth and differentiation of specific bone cells in lab tests and zebrafish models, suggesting a molecular mechanism involving the BAP1/IP3R signaling pathway, indicating its potential as a treatment for osteoporosis.
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Article Synopsis
  • * Behavioral tests showed that both PIL and vit-D led to depressive and anxious behaviors, along with cognitive impairments, but vit-D reduced harmful IgM and IgG deposits in the brain after 6 months.
  • * The findings suggest that the PIL model effectively represents systemic lupus erythematosus (SLE) with neuropsychiatric manifestations, indicating vit-D's potential for reducing brain inflammation while improving memory without affecting anxiety or depression.
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Coevolution of norm psychology and cooperation through exapted conformity.

Evol Hum Sci

October 2024

Graduate School of Humanities and Human Sciences, Hokkaido University, Sapporo, Japan.

People willingly follow norms and values, often incurring material costs. This behaviour supposedly stems from evolved norm psychology, contributing to large-scale cooperation among humans. It has been argued that cooperation is influenced by two types of norms: injunctive and descriptive.

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Article Synopsis
  • Intergroup contact via the internet can enhance relationships, particularly in high-conflict situations.
  • A study involving 128 Afghan participants from different ethnic backgrounds explored how a conversational agent in E-contact platforms could reduce prejudice among historically segregated groups.
  • Results showed that those using the conversational agent contributed more to discussions and experienced less outgroup prejudice and anxiety compared to those in the control group, indicating positive effects of E-contact in conflict settings.
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  • Lung squamous cell carcinoma (LUSC) is a type of lung cancer that is quite common, but researchers haven't studied a process called pyroptosis in this cancer much.
  • In this study, scientists found that a gene called GSDMC is very active in LUSC, and when they reduced its activity, the cancer cells struggled to grow and spread.
  • They also discovered that a protein called SMAD4 helps control how much GSDMC is expressed, suggesting that both GSDMC and SMAD4 could be important for future cancer treatments and tests.
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Firmicutes/Bacteroidetes and Firmicutes/Proteobacteria ratios are associated with worse prognosis in a cohort of Latin American patients with cirrhosis.

Clinics (Sao Paulo)

August 2024

Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental Laboratory of Hepatology and Gastroenterology, Center for Experimental Research, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq Researcher, Brazil; Division of Gastroenterology, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil. Electronic address:

Background: Some evidence suggests an association between gut dysbiosis and cirrhosis progression. The authors investigated Gut Microbiome (GM) influence on 90-day mortality and hospitalization/rehospitalization rates in cirrhotic patients.

Methods: Compensated/decompensated outpatients and decompensated inpatients were prospectively included and compared to healthy controls.

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Risk preference as an outcome of evolutionarily adaptive learning mechanisms: An evolutionary simulation under diverse risky environments.

PLoS One

August 2024

Department of Behavioral Science, Graduate School of Humanities and Human Sciences, Hokkaido University, Sapporo, Hokkaido, Japan.

The optimization of cognitive and learning mechanisms can reveal complicated behavioral phenomena. In this study, we focused on reinforcement learning, which uses different learning rules for positive and negative reward prediction errors. We attempted to relate the evolved learning bias to the complex features of risk preference such as domain-specific behavior manifests and the relatively stable domain-general factor underlying behaviors.

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Redefining the Role of Ornithine Aspartate and Vitamin E in Metabolic-Dysfunction-Associated Steatotic Liver Disease through Its Biochemical Properties.

Int J Mol Sci

June 2024

Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre 90010-150, Rio Grande do Sul, Brazil.

It is known that the inflammation process leading to oxidative stress and thyroid hormone metabolism dysfunction is highly altered in metabolic dysfunction associated with steatotic liver disease (MASLD). This study aims to address the effect of ornithine aspartate (LOLA) and vitamin E (VitE) in improving these processes. Adult Sprague-Dawley rats were assigned to five groups and treated for 28 weeks: controls ( = 10) received a standard diet (for 28 weeks) plus gavage with distilled water (DW) from weeks 16 to 28.

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An outside individual option increases optimism and facilitates collaboration when groups form flexibly.

Nat Commun

June 2024

Faculty of Mathematical Informatics, Meiji Gakuin University, 1518 Kamikurata-cho, Totsuka-ku, Yokohama-shi, Kanagawa, 244-853, Japan.

Voluntary participation is a central yet understudied aspect of collaboration. Here, we model collaboration as people's voluntary choices between joining an uncertain public goods provisioning in groups and pursuing a less profitable but certain individual option. First, we find that voluntariness in collaboration increases the likelihood of group success via two pathways, both contributing to form more optimistic groups: pessimistic defectors are filtered out from groups, and some individuals update their beliefs to become cooperative.

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Aim: Hyperthymic temperament is a cheerful action orientation that is suggested to have a protective effect on depressive symptoms. We recently reported that hyperthymic temperament can positively predict activation of reward-related brain areas in anticipation of monetary rewards, which could serve as a biomarker of hyperthymic temperament. However, the relationship between hyperthymic temperament and neural responsiveness to nonmonetary rewards (i.

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Our preliminary investigation has identified the potential of serum fucosylated extracellular vesicles (EVs) miR-4732-5p in the early diagnosis of lung adenocarcinoma (LUAD) by a fucose-captured strategy utilizing lentil lectin (LCA)-magnetic beads and subsequent screening of high throughput sequencing and validation of real-time quantitative polymerase chain reaction (RT-qPCR). Considering the relatively complicated procedure, expensive equipment, and stringent laboratory condition, we have constructed an electrochemical biosensor assay for the detection of miR-4732-5p. miR-4732-5p is extremely low in serum, down to the fM level, so it needs to be detected by highly sensitive electrochemical methods based on the Mg-dependent DNAzyme splitting nucleic acid lock (NAL) cycle and hybridization chain reaction (HCR) signal amplification.

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Metastatic castration-resistant prostate cancer (mCRPC) is associated with a poor prognosis and remains an incurable fatal disease. Therefore, the identification of molecular markers involved in cancer progression is urgently needed to develop more-effective therapies. The present study investigated the role of the Wnt signaling modulator Dickkopf-1 (DKK1) in the growth and metastatic progression of mCRPC.

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Muscle fibre morphometric analysis (MusMA) correlates with muscle function and cardiovascular risk prognosis.

Int J Exp Pathol

June 2024

Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.

Article Synopsis
  • Morphometry of striated muscle fibres is important for assessing muscle health, and this study used the MusMA tool to analyze muscle function in two models: collagen-induced arthritis for skeletal muscle and non-alcoholic fatty liver disease for cardiac muscle.
  • After studying muscle segments stained with specific dyes, researchers classified muscle fibres into various categories, revealing links between fibre types and functional performance measures such as walking speed and grip strength.
  • The findings indicate that normal muscle fibres are associated with better physical function and lower cardiovascular risks, suggesting that MusMA could be a valuable tool in diagnosing muscle diseases and researching their functional implications.
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Background: Aberrant fucosylation observed in cancer cells contributes to an augmented release of fucosylated exosomes into the bloodstream, where miRNAs including miR-4732-3p hold promise as potential tumor biomarkers in our pilot study. However, the mechanisms underlying the sorting of miR-4732-3p into fucosylated exosomes during lung cancer progression remain poorly understood.

Methods: A fucose-captured strategy based on lentil lectin-magnetic beads was utilized to isolate fucosylated exosomes and evaluate the efficiency for capturing tumor-derived exosomes using nanoparticle tracking analysis (NTA).

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Induction of ferroptosis can inhibit cancer cells in vitro, however, the role of ferroptosis in treatment in vivo is controversial. The immunosuppressive cells activated by the ferroptotic tumor cells can promote the growth of residual tumor cells, hindering the application of ferroptosis stimulation in tumor treatment. In this study, a new strategy is aimed to be identified for effectively triggering immunogenic ferroptosis in pancreatic ductal adenocarcinoma (PDAC) and simultaneously stimulating antitumor immune responses.

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Objectives: Despite the fact that fibromyalgia, a widespread disease of the musculoskeletal system, has no specific treatment, patients have shown improvement after pharmacological intervention. Pregabalin has demonstrated efficacy; however, its adverse effects may reduce treatment adherence. In this context, neuromodulatory techniques such as transcranial direct current stimulation (tDCS) may be employed as a complementary pain-relieving method.

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Background: Effective discrimination of lung adenocarcinoma (LUAD) (AIS) from benign pulmonary nodules (BPN) is critical for the early diagnosis of AIS. Our pilot study in a small cohort of 90 serum samples has shown that serum interleukin 6 (IL-6) detection can distinguish AIS from BPN and health controls (HC). In this study, we intend to comprehensively define the diagnostic value of individual and combined detection of serum IL-6 related to the traditional tumor markers carcinoembryonic antigen (CEA) and cytokeratin 19 fragment (CYFRA21-1) for AIS.

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Extracellular vesicles (EVs) are promising as a biomarker of metabolic dysfunction associated steatotic liver disease (MASLD). The objective is to study EVs and their involvement in MASLD concerning the disease's pathogenesis and progression characteristics. Male adult Sprague Dawley rats were randomly assigned into two experimental models of MASLD: MASLD-16 and MASLD-28, animals received a choline-deficient high-fat diet (CHFD) and Control-16 and Control-28, animals received a standard diet (SD) for 16 and 28 weeks, respectively.

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