The motility of circulating neutrophils from seven patients affected by intermediate and high-grade non-Hodgkin's lymphoma was investigated before and after rhG-CSF administration (5 micrograms/kg/d for 5 d subcutaneously) in the course of chemotherapy. Random motility and bacterial lipopolysaccharide-induced chemotaxis were studied by the micropore filter technique in a Boyden chamber. These functions were evaluated by a very sensitive technique, based on a computer-assisted image processing system, capable of giving several parameters about the kinetics of cell migration. Along with a significant increase in neutrophil number, a significant decrease both in random and stimulated motility was found. The kinetics of cell migration showed that the cells maintained the typical gaussian pattern of random motility. On the contrary, neutrophils were found to have lost the typical stimulated migration peak. These findings are consistent with a rhG-CSF-induced impairment of the directional movement, rather than of the ability of moving at random. These effects were found in patients who, in the same experimental conditions, had displayed an enhanced phagocytosis and phagocytosis-associated chemiluminescence along with an enhanced CD32 expression, not due to an aspecific cell manipulation. Two hypotheses may be taken into account: (i) an increased adhesiveness due to a direct or an indirect activity of the cytokine; (ii) an abnormality in the cytoskeleton maturation and/or rearrangement during the accelerated bone marrow transit of myeloid cells. These findings emphasize that rh-GCSF administration can modulate several functions which play an important role in host defence, and suggest the utility of carrying out further studies to investigate the optimum dosage both to correct neutrophil number and preserve neutrophil functional activities.
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http://dx.doi.org/10.1046/j.1365-2141.1996.00295.x | DOI Listing |
Front Immunol
January 2025
Department of Nephrology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
Rationale: Acute kidney injury (AKI) is a clinical syndrome associated with a multitude of conditions. Although renal replacement therapy (RRT) remains the cornerstone of treatment for advanced AKI, its implementation can potentially pose risks and may not be readily accessible across all healthcare settings and regions. Elevated lactate levels are implicated in sepsis-induced AKI; however, it remains unclear whether increased lactate directly induces AKI or elucidates the underlying mechanisms.
View Article and Find Full Text PDFFront Immunol
January 2025
Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Background: Leukocytes play an important role in inflammatory response after a traumatic brain injury (TBI). We designed this study to identify TBI phenotypes by clustering blood levels of various leukocytes.
Methods: TBI patients from the Medical Information Mart for Intensive Care-III (MIMIC-III) database were included.
Am J Blood Res
December 2024
Department of Pathology, University College of Medical Sciences and Guru Teg Bahadur Hospital Delhi, India.
Unlabelled: Iron deficiency anaemia (IDA) makes an individual prone to bacterial infections. The antimicrobial defence mechanism of neutrophils is orchestrated by Nicotinamide Adenine Dinucleotide Phosphate Hydrogen (NADPH) oxidative burst which is iron-dependent. The few previous studies documenting a decrease in neutrophil oxidative burst in iron-deficient children have been based mainly on the Nitro blue tetrazolium test (NBT).
View Article and Find Full Text PDFWorld J Oncol
February 2025
The First Clinical Medical School, Jinan University, Guangzhou 510632, Guangdong, China.
Background: Thymidine kinases (TKs) are key enzymes involved in DNA synthesis and repair, with alterations in their expression associated with various cancers. Thymidine kinase 1 (TK1) and TK2 are cytosolic enzyme proteins that catalyze the addition of a gamma-phosphate group to thymidine. The existing literature on TK1 in cervical squamous cell carcinoma (CESC) fails to address the clinical role of TK1 overexpression and its possible molecular mechanism in CESC.
View Article and Find Full Text PDFWorld J Oncol
February 2025
Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Background: We here investigated the value of imaging examination in evaluating tumor remission-based surgery in patients with head and neck squamous cell carcinoma (HNSCC), who had undergone neoadjuvant immunotherapy combined with chemotherapy (NICC).
Methods: HNSCC patients who underwent NICC and surgery from May 2021 to September 2023 were retrospectively analyzed. All patients had to undergo imaging examination evaluation, including enhanced computed tomography (CT) and enhanced magnetic resonance (MR) imaging before and after NICC.
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