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Objectives: The purpose of the study is to know if mucin gene expression can be detected in the middle ear effusion and if so, which mucin genes are expressed in the effusions.
Methods: Mucin gene expression in the middle ear effusions obtained from five patients with otitis media with effusion were analyzed by reverse transcription-polymerase chain reaction. Ribonucleic acids (RNAs) were extracted from the effusion and the expression of 12 mucin genes was analyzed by reverse transcription-polymerase chain reaction.
Results: Mucin gene expression examined by reverse transcription-polymerase chain reaction indicated the expression of MUC1, MUC4, MUC5AC, MUC6, MUC7, MUC8, MUC9, MUC11 and MUC12 mRNA in the effusion. This mucin gene expression was similar to that in BEAS-2B cell, a bronchial epithelial cell line.
Conclusion: Middle ear effusion can give us valuable information on mucin gene expression in the middle ear. There is similarity between mucin gene expression in the middle ear effusion and that in the bronchial epithelia.
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http://dx.doi.org/10.1016/s0165-5876(02)00361-0 | DOI Listing |
Int J Mol Med
November 2025
Department of General Practice, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, P.R. China.
Mucin 6 (MUC6), primarily expressed in the gastrointestinal (GI) epithelium, is a member of the mucin family characterized by a protein backbone with extensive glycosylation, playing a crucial role in preserving epithelial barrier integrity. Accumulating evidence indicates that MUC6 glycosylation contributes significantly to cancer development, diagnosis, therapy and prognosis‑particularly in GI malignancies such as gastric, pancreatic and colorectal cancers. In the present review, current findings on the multifaceted roles of MUC6 across various cancers were comprehensively summarize.
View Article and Find Full Text PDFJ Nutr
September 2025
Department of Nutrition, University of California, Davis, CA; USDA ARS Western Human Nutrition Research Center, Davis, CA. Electronic address:
Background: Dietary carbohydrates shape the composition and function of gut microbes which may potentially influence human health. It is not known if these diet-microbiome relationships are relevant to healthy American adults.
Objective: We hypothesized that intake of dietary fiber by healthy adults would be associated with the carbohydrate active enzyme (CAZyme) capacity of their gut microbiome and that this capacity would be negatively correlated with gastrointestinal (GI) inflammation.
Cell Host Microbe
August 2025
Division of Molecular Microbiology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK. Electronic address:
Streptococcus pneumoniae colonizes human airways, where it acquires sugars from glycosylated mucins using glycoside hydrolases and sugar transport systems. This study identifies widespread nucleotide sequence variation in the promoter of a pneumococcal operon encoding a glycan scavenging system. We identify 78 promoter sequence patterns across 21,155 genomes, with variation clustered within a stretch of adenines, where mutations accumulate via strand slippage during DNA replication.
View Article and Find Full Text PDFUnlabelled: Hibernation is a seasonal survival strategy employed by certain mammals that, through torpor use, reduces overall energy expenditure and permits long-term fasting. Although fasting solves the challenge of winter food scarcity, it also removes dietary carbon, a critical biomolecular building block. Here, we demonstrate a process of urea carbon salvage (UCS) in hibernating 13-lined ground squirrels, whereby urea carbon is reclaimed through gut microbial ureolysis and used in reductive acetogenesis to produce acetate, a short-chain fatty acid (SCFA) of major value to the host and its gut microbiota.
View Article and Find Full Text PDFVirulence
December 2025
State Key Laboratory for Animal Disease Control and Prevention, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
causes severe diarrhea in humans and animals. Mucin-like glycoproteins play a critical role in parasite attachment and invasion and therefore serve as potential protective antigens against reinfection. Muc25 is a highly polymorphic mucin that has been associated with differences in host infectivity in comparative genomic analyses.
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