PMID: 15228218Jul 2, 2004Paper

The effect of fructooligosaccharides was analyzed by cDNA expression arrays

Journal of Nutritional Science and Vitaminology
Akiko FukushimaKeiko Sakuma

Abstract

We have already reported that indigestible fructooligosaccharides (FOS) increased calcium absorption in rat large intestines and that calbindin-D9k (CaBP), which is an intestine-specific calcium-binding protein, is involved in that increasing effect. In this study, not only the CaBP gene, every gene that changed expression profiles as the result of FOS feeding was identified by cDNA expression arrays. Sprague-Dawley male rats were fed an experimental diet containing 10% FOS for 10 d. To compare gene expression with rats fed a control diet, total mRNA was extracted from the colorectum and analyzed using a Rat cDNA Expression Arrays filter. This arrays filter contains probes of 588 genes, and 195 of them showed detectable changes in their expression by FOS feeding. There were six genes that increased their expression more than twice that of the control. Among them, genes related to the induction of cell growth such as Map kinase 1 and Max were included. Expressions that decreased to less than half were observed in 20 genes, such as somatostatin and prohibitin, which prohibit cell growth. These results are consistent with the other observation that FOS increases cell growth in the colorectum. This approach has revealed that cDNA a...Continue Reading

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.