Objective: To confirm abnormal glycosylation of Tamm-Horsfall protein (THP) in patients with interstitial cystitis (IC).
Patients, Subjects And Methods: The sialic acid content of THP, a critical component of its biological activity, is reduced in patients with IC. N-glycan shows reduced levels of high molecular weight tri- and tetra-antennary sialylated oligosaccharides. These results are supported by quantitative monosaccharide analysis of neutral and amino sugars in patients vs control subjects. THP was isolated from urine samples of 23 patients with IC and 24 control subjects by salt precipitation. The sialic acid contents were measured using 1,2-diamino-4,5-methylene dioxybenzene-high performance liquid chromatography analysis. For N-glycan profiling, purified THP was treated with peptide:N-glycosidase F to release N-glycans. The purified N-glycans were labelled with 2-aminobenzamide and were profiled by high-pH anion exchange chromatography (HPAEC) with fluorescence detection. The neutral and amino sugars were determined by HPAEC with pulsed amperometric detection.
Results: The total sialic acid in patients was half of that in controls. There was a pattern of reduced level of high molecular weight sialylated oligosaccharide in 17 of 23 patients vs four of 24 controls. The total neutral and amino sugars showed a approximately 30% reduction in patients. The mean (sem) for the controls was 133.79 (6.51) vs 94.76 (6.67) nmol/200 microg of THP for patients (P < 0.001).
Conclusions: THP in patients with IC has reduced sialylation and overall glycosylation, and by inference, THP has a role in the pathophysiology of IC.
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http://dx.doi.org/10.1111/j.1464-410X.2008.08163.x | DOI Listing |
Ren Fail
December 2025
Department of Nephrology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Objective: The innate immune defense plays a pivotal role in protecting the urinary tract from uropathogenic invasion and maintaining immune homeostasis. Dysregulation of the innate immune system can result in recurrent urinary tract infections (RUTI) due to heightened susceptibility to uropathogens. Despite this, predicting the risk of recurrence and the degree of immune compromise in patients who have had one urinary tract infection remains challenging.
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January 2025
PredictCan Biotechnologies SAS, Biopôle Euromédecine, Grabels, France.
Hepatocellular carcinoma (HCC) is the third most common cause of cancer-related death worldwide. Treating HCC is challenging because of the poor drug effectiveness and the lack of tools to predict patient responses. To resolve these issues, we established a patient-centric spheroid model using HepG2, TWNT-1, and THP-1 co-culture, that mimics HCC phenotype.
View Article and Find Full Text PDFEur J Med Res
January 2025
Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 West Wenhua Road, Ji'nan, 250012, Shandong, People's Republic of China.
Background: Preeclampsia (PE) is a severe pregnancy complication characterized by hypertension and proteinuria. PE poses a substantial threat to the health of both mothers and fetuses, and currently, there is no definitive treatment available. Recent studies have indicated that the transcription factor GATA1 may be implicated in the pathological processes of PE, but the underlying mechanism remains elusive.
View Article and Find Full Text PDFJ Clin Periodontol
January 2025
Department of Oral Implantology, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China.
Aim: To explore the potential roles of mitochondrial dysfunction in the initiation of inflammation in periodontal macrophages and to determine the mechanism underlying the involvement of dynamin-related protein 1 (Drp1) in macrophage inflammatory responses through its interaction with hexokinase 1 (HK1).
Materials And Methods: Gingival tissues were collected from patients diagnosed with periodontitis or from healthy volunteers. Drp1 tetramer formation and phosphorylation were analysed using western blot.
iScience
November 2024
Department of Gastroenterology, Peking University People's Hospital, Beijing 100044, China.
Inflammatory bowel disease (IBD) presents a range of extraintestinal manifestations, notably including oral cavity involvement. The mechanisms underlying oral-gut crosstalk in IBD are not fully understood. Exosomes, found in various body fluids such as saliva, play an unclear role in IBD that requires further exploration.
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