Platelet factor 4 (PF4) has been recognized as a physiological inhibitor of megakaryocytopoiesis and angiogenesis for two decades. Structure-function studies have shown that the DLQ determinant in position 54-56 is necessary for megakaryocytic inhibition whereas mutations of these residues into ELR sequence and more importantly, into DLR sequence, induce a stronger inhibitory activity of peptide p47-70 on angiogenesis. The alpha-helix region of peptides may participate in the fixation of the effector to its cellular receptor and the other important structural domains would activate the receptor. In vivo, PF4 and its related peptides can protect hematopoiesis from chemotherapy by enhancing cell viability and suppress tumor growth through anti-angiogenic pathway. Several PF4 fragments and modified molecules exhibit antiangiogenesis properties and may become an alternative for further therapeutic angiogenesis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/08977190600988225 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Freeze-dried plasma: Hemostasis and biophysical analyses for damage control resuscitation.
Transfusion
January 2025
Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
Background: Effective hemorrhage protocols prioritize immediate hemostatic resuscitation to manage hemorrhagic shock. Prehospital resuscitation using blood products, such as whole blood or alternatively dried plasma in its absence, has the potential to improve outcomes in hemorrhagic shock patients. However, integrating blood products into prehospital care poses substantial logistical challenges due to issues with storage, transport, and administration in field environments.
View Article and Find Full Text PDF[Anticoagulation effects of nafamostat mesylate in sustained low-efficiency dialysis and its relevant factors].
Zhonghua Yi Xue Za Zhi
January 2025
Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai Medical Center of Kidney, Shanghai200032, China.
To investigate anticoagulation effects of nafamostat mesylate(NM) in sustained low-efficiency dialysis (SLED) and its relevant factors. Critically ill patients with kidney disease who were admitted to Zhongshan Hospital Affiliated to Fudan University and underwent SLED treatment from May to August 2024 were retrospectively included. Baseline clinical data were collected, and the activated partial thromboplastin time (APTT) and activated clotting time (ACT) were measured at the arterial end, before the filter, and at the venous end two hours post-NM anticoagulation treatment.
View Article and Find Full Text PDFImpact of hyper- and hypothermia on cellular and whole-body physiology.
J Intensive Care
January 2025
Department of Anesthesiology, Critical Care, and Surgery, Duke University School of Medicine, Durham, NC, USA.
The incidence of heat-related illnesses and heatstroke continues to rise amidst global warming. Hyperthermia triggers inflammation, coagulation, and progressive multiorgan dysfunction, and, at levels above 40 °C, can even lead to cell death. Blood cells, particularly granulocytes and platelets, are highly sensitive to heat, which promotes proinflammatory and procoagulant changes.
View Article and Find Full Text PDFAssociation between the systemic immune-inflammation index and sarcopenia in older adults: a cross-sectional study.
BMC Geriatr
January 2025
Faculty of Medicine, Department of Geriatric Medicine, Gazi University, Ankara, 06560, Turkey.
Background: Chronic inflammation is increasingly recognized as a crucial contributor to sarcopenia pathogenesis, but accurate diagnosis remains a challenge.
Aim: Our study aims to investigate the relationship between sarcopenia and the Systemic Immune-Inflammation Index (SII), a comprehensive indicator of inflammation.
Methods: This cross-sectional study enrolled 632 patients.
Classification Prediction of Hydrocephalus After Intercerebral Haemorrhage Based on Machine Learning Approach.
Neuroinformatics
January 2025
Department of Mathematics and Statistics, Changsha University of Science and Technology, Changsha, 410114, China.
In order to construct a clinical classification prediction model for hydrocephalus after intercerebral haemorrhage(ICH) to guide clinical treatment decisions, this paper retrospectively analyses the clinical data of 844 cases of ICH and hydrocephalus inpatients admitted to Yueyang People's Hospital from May 2019 to October 2022, of which 95 cases of hydrocephalus occurred after ICH and no hydrocephalus in 749 cases. The following indicators were compared between the two groups of patients: gender, age, Glasgow Coma Scale(GCS)score, whether the amount of bleeding was greater than 30 ml, whether it broke into the ventricle or not, modified Graeb score(MGS), modified Rankin Scale (MRS) score, whether surgery was performed or not, red blood cells, white blood cells, and platelets. After variable screening, the following six variables were selected: GCS score, MGS, MRS score, whether the bleeding volume was greater than 30 ml, whether it broke into the ventricle or not, and whether surgery was performed or not were modelled and analysed using logistic regression model and support vector machine model in machine learning.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!