Stroke is the second leading cause of death worldwide; however, the treatment choices available to neurologists are limited in clinical practice. Lipocalin 2 (LCN2) is a secreted protein, belonging to the lipocalin superfamily, with multiple biological functions in mediating innate immune response, inflammatory response, iron-homeostasis, cell migration and differentiation, energy metabolism, and other processes in the body. LCN2 is expressed at low levels in the brain under normal physiological conditions, but its expression is significantly up-regulated in multiple acute stimulations and chronic pathologies. An up-regulation of LCN2 has been found in the blood/cerebrospinal fluid of patients with ischemic/hemorrhagic stroke, and could serve as a potential biomarker for the prediction of the severity of acute stroke. LCN2 activates reactive astrocytes and microglia, promotes neutrophil infiltration, amplifies post-stroke inflammation, promotes blood-brain barrier disruption, white matter injury, and neuronal death. Moreover, LCN2 is involved in brain injury induced by thrombin and erythrocyte lysates, as well as microvascular thrombosis after hemorrhage. In this paper, we review the role of LCN2 in the pathological processes of ischemic stroke; intracerebral hemorrhage; subarachnoid hemorrhage; and stroke-related brain diseases, such as vascular dementia and post-stroke depression, and their underlying mechanisms. We hope that this review will help elucidate the value of LCN2 as a therapeutic target in stroke.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.nbd.2023.106044 | DOI Listing |
Dig Dis Sci
January 2025
Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, New York, NY, 10029, USA.
Background: Fecal lipocalin-2 (LCN2) is a biomarker of neutrophil activation, which is elevated in patients with inflammatory bowel disease (IBD); however, its dynamic changes during pregnancy and early life are largely unknown. We characterized LCN2 levels by maternal IBD diagnosis, offspring feeding behavior, and gut microbiota composition.
Methods: In the prospective MECONIUM (Exploring Mechanisms of Disease Transmission In Utero through the Microbiome) study, we analyzed 559 fecal samples from 91 pregnant women with IBD, 78 healthy controls, and their 147 offspring for LCN2 levels at each trimester of pregnancy and multiple time points during early life using linear mixed-effects model and multiple logistic regression analyses.
Adv Sci (Weinh)
January 2025
Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
Dietary high salt intake is increasingly recognized as a risk factor for cognitive decline and dementia, including Alzheimer's disease (AD). Recent studies have identified a population of disease-associated astrocytes (DAA)-like astrocytes closely linked to amyloid deposition and tau pathology in an AD mouse model. However, the presence and role of these astrocytes in high-salt diet (HSD) models remain unexplored.
View Article and Find Full Text PDFMar Drugs
January 2025
The Marine Biomedical Research Institute of Guangdong Zhanjiang, School of Ocean and Tropical Medicine, Guangdong Medical University, Zhanjiang 524023, China.
LCN2, a member of the lipocalin family, is associated with various tumors and inflammatory conditions. Despite the availability of known inhibitors, none have been approved for clinical use. In this study, marine compounds were screened for their ability to inhibit LCN2 using pharmacophore models.
View Article and Find Full Text PDFFront Immunol
January 2025
The First Affiliated Hospital of Army Military Medical University, Department of General Surgery, Chongqing, China.
Gastric cancer continues to be a leading global health concern, with current therapeutic approaches requiring significant improvement. While the disruption of iron metabolism in the advancement of gastric cancer has been well-documented, the underlying regulatory mechanisms remain largely unexplored. Additionally, the complement C5a-C5aR pathway has been identified as a crucial factor in gastric cancer development.
View Article and Find Full Text PDFPol J Pathol
January 2025
Department of Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Breast carcinoma is one of the most common causes of cancer-related mortality among women worldwide. The primary objective of the present study was to eva-luate the expression of the epithelial-mesenchymal transition (EMT)-related markers Lin28, MUC1, and lipocalin-2 in invasive lobular carcinoma (ILC) and to investigate their correlation with clinicopathological characteristics and patient survival. This prospective cohort study included 120 classic ILC cases investigated for immunohistochemical expressions of Lin28, MUC1, and lipocalin-2 and followed them for five years or until death.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!