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Normal dissolved oxygen in water is essential for maintaining the physiological functions of fish, but environmental pollution, such as eutrophication can lead to a decrease in oxygen content in water. How this reduction of dissolved oxygen in water affects the immune functions of fish and the potential regulatory mechanisms have not been thoroughly elucidated. In this study, we made full use of the aquatic model animal zebrafish to explore this question. In a model of LPS-induced inflammation, we found that hypoxia induced by infusing nitrogen into water increased the expression of pro-inflammatory cytokines, such as il-1β, il-6, and il-8. In vivo imaging also showed that hypoxia significantly increased neutrophil migration to the site of caudal fin injury in the transgenic line. Subsequently, we found that the phosphorylation level of ERK protein was significantly activated upon hypoxia and proved the roles of ERK signaling in the expression of pro-inflammatory cytokines and neutrophil migration in zebrafish. This study indicated that reduced water oxygen significantly increases the inflammatory response of the zebrafish.
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http://dx.doi.org/10.1016/j.fsi.2022.05.006 | DOI Listing |
Clin Oral Investig
September 2025
Department of Stomatology, Shengli Oilfield Central Hospital, No. 31, Jinan Road, Dongying, 257034, China.
Objective: Progesterone (PG) and its target, progesterone receptor (PGR), are important regulators in inflammatory diseases. This study aimed to investigate the specific role of PG in periodontitis and to elucidate the underlying mechanisms involving PGR.
Methods: Women with periodontitis, including 250 with PG deficiency, 250 with PG supplementation, and 245 controls (normal PG) were enrolled.
Thromb Res
September 2025
Departamento de Química and Institute for advanced research in chemical Science (IAdChem), Facultad de Ciencias, Módulo 13, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
Platelet integrin αIIbβ3 is the final common effector of arterial thrombosis: it switches from a low-affinity to a high-affinity state, binds fibrinogen, and initiates the outside-in signals that stabilize a growing clot. Calcium- and integrin-binding protein 1 (CIB1) emerged as the first endogenous partner of the αIIb cytoplasmic tail and is now recognized as a dual-role adaptor. At rest, Ca-free CIB1 tethers the inner membrane clasp and restrains premature integrin activation; after ligand engagement, Ca-bound CIB1 docks onto αIIb, recruits focal-adhesion kinase and amplifies Src-dependent cytoskeletal remodeling.
View Article and Find Full Text PDFPLoS One
September 2025
Department of Orthopedic Surgery, Center for Shoulder and Elbow Surgery, Konkuk University School of Medicine, Seoul, Korea.
Purpose: We aimed to compare the effects of atelocollagen (AC) and individual growth factors on the expression of key molecular markers associated with tendon healing.
Methods: C2C12 myoblasts were cultured in Dulbecco's Modified Eagle Medium (DMEM) containing 5% fetal bovine serum (FBS) and treated with 1 nM or 10 nM of Atelocollagen (AC), bone morphogenetic protein-2 (BMP-2), transforming growth factor-beta 1 (TGF-β1), insulin-like growth factor-1 (IGF-1), or vascular endothelial growth factor (VEGF) for 5 days. After 5 days of treatment, cells were harvested from the culture medium, and Western blot analysis was performed to quantify the expression of phosphorylated extracellular signal-regulated kinase (p-ERK), Collagen type I (Col I), Collagen type Ⅲ (Col Ⅲ), and Tenascin C (TnC).
Dev Growth Differ
September 2025
Department of Biological Sciences, College of Arts, Sciences, and Education, Florida International University, Miami, Florida, USA.
Superoxide dismutases (SODs) are key regulators of reactive oxygen species (ROS) and redox balance. Although intracellular SODs have been extensively studied, growing attention has been directed toward understanding the roles of extracellular SODs in both Dictyostelium and mammalian systems. In Dictyostelium discoideum, SodC is a glycosylphosphatidylinositol (GPI)-anchored enzyme that modulates extracellular superoxide to regulate Ras, PI3K signaling, and cytoskeletal remodeling during directional cell migration.
View Article and Find Full Text PDFDig Dis Sci
September 2025
Department of Gastroenterology and Hepatology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.
Background And Aims: Liver metastasis significantly contributes to poor survival in patients with colorectal cancer (CRC), posing therapeutic challenges due to limited understanding of its mechanisms. We aimed to identify a potential target critical for CRC liver metastasis.
Methods: We analyzed the Gene Expression Omnibus (GEO) and the Cancer Genome Atlas (TCGA) databases and identified EphrinA3 (EFNA3) as a potential clinically relevant target.