Aims: With the advancement of small intestinal (double balloon and capsule) endoscopy technology, incidence of small intestinal lesion caused by nonsteroidal anti-inflammatory drugs (NSAIDs) has been known to be high. However, therapy for small intestinal mucosal lesion has not yet been developed. Previous studies have shown that heat shock proteins (HSPs) are involved in cytoprotection mediated by their function as a molecular chaperone. In this study, we examined the effect of HSP60 or HSP70 overexpression on hydrogen peroxide-induced (H2O2) or indomethacin-induced cell damage in the small intestinal epithelial cells.
Main Methods: cDNA of human HSP60 or HSP70 was transfected to rat small intestinal (IEC-6) cells, and HSP60- or HSP70-overexpressing cells were cloned. IEC-6 cells transfected with vector only were used as control cells. These cells were treated with H2O2 (0-0.14mM) or indomethacin (0-2.5mM). The cell viability was determined by MTT-assay. Cell necrosis was evaluated by LDH-release assay. Further, apoptosis was evaluated by caspases-3/7 activity and TUNEL assay.
Key Findings: Cell viability after H2O2 or indomethacin treatment was significantly higher in HSP60-overexpressing cells compared with that in control cells and HSP60-overexpressing cells. Apoptotic cells were also reduced in HSP60-overexpressing.
Conclusion: These results indicate that HSP60 plays an important role in protecting small intestinal mucosal cells from H2O2-induced or indomethacin-induced cell injury. HSP70-overexpressing cells did not show anti-apoptotic ability.
Significance: These findings possibly suggest that function of each HSP is different in the small intestine. Therefore, for the therapy of small intestinal mucosal lesion, HSP60-induction therapy could be a new therapeutic strategy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.lfs.2010.02.010 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fructose catabolism and its metabolic effects: Exploring host-microbiota interactions and the impact of ethnicity.
J Physiol
January 2025
Department of Internal and Experimental Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, The Netherlands.
Important health disparities are observed in the prevalence of obesity and associated non-communicable diseases (NCDs), including type 2 diabetes (T2D) and metabolic dysfunction-associated steatotic liver disease (MASLD) among ethnic groups. Yet, the underlying factors accounting for these disparities remain poorly understood. Fructose has been widely proposed as a potential mediator of these NCDs, given that hepatic fructose catabolism can result in deleterious metabolic effects, including insulin resistance and hepatic steatosis.
View Article and Find Full Text PDFSmall intestinal bacterial overgrowth: from malabsorption to misinterpretation.
Minerva Gastroenterol (Torino)
January 2025
Houston Methodist Hospital and Weill Cornell Medical College, Lynda K and David M Underwood Center for Digestive Disorders, Houston, TX, USA -
Small intestinal bacterial overgrowth (SIBO) was originally described as a cause of maldigestion and malabsorption in situations where disruptions of intestinal anatomy or physiology favored the proliferation of bacteria normally confined to the colon. In this context, the pathogenesis of symptoms resulting from SIBO was well described. More recently, the concept of SIBO was extended to explain symptoms such as bloating, altered bowel habit and discomfort among individuals with irritable bowel syndrome and since then a whole host of gastrointestinal and extragastrointestinal disorders have been attributed to SIBO.
View Article and Find Full Text PDFPrebiotics as modulators of colonic calcium and magnesium uptake.
Acta Physiol (Oxf)
February 2025
Institute for Molecular Medicine, Health and Medical University Potsdam, Potsdam, Germany.
Ca and Mg are essential nutrients, and deficiency can cause serious health problems. Thus, lack of Ca and Mg can lead to osteoporosis, with incidence rising both in absolute and age-specific terms, while Mg deficiency is associated with type II diabetes. Prevention via vitamin D or estrogen is controversial, and the bioavailability of Ca and Mg from supplements is significantly lower than that from milk products.
View Article and Find Full Text PDFActivated CD27PD-1 CD8 T Cells and CD4 T Regulatory Cells Dominate the Tumor Microenvironment in Refractory Celiac Disease Type II.
Gastro Hep Adv
September 2024
Department of Immunology, Leiden University Medical Center, Leiden, the Netherlands.
Background And Aims: Refractory celiac disease type II (RCDII) is characterized by a clonally expanded aberrant cell population in the small intestine. The role of other tissue-resident immune subsets in RCDII is unknown. Here, we characterized CD8 and CD4 T cells in RCDII duodenum at the single-cell level and .
View Article and Find Full Text PDFHidden in plain sight: abdominopelvic pain unveiling a Spigelian hernia containing ovary and fallopian tube.
J Surg Case Rep
January 2025
Division of Acute Care Surgery, Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, United States.
Spigelian hernias are rare clinical entities; vague symptomatology and unreliable clinical examination ensure difficult diagnosis. Computed tomography (CT) is critical for accurate diagnosis. Surgical repair is mandated given the high risk of visceral organ incarceration.
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!