The stabilization of telomere length by telomerase activation is an important step in carcinogenesis. Quantification of the catalytic telomerase subunit hTERT (human Telomerase Reverse Transcriptase) is a new indirect measure for telomerase. Telomere length and hTERT expression in cancer tissue and corresponding normal mucosa of 57 patients with completely resected colorectal carcinoma (UICC stage I-IV, R0) were determined for correlation with histopathological parameters and survival. Telomere lengths were measured using Southern Blot and hTERT-encoding mRNA was quantified by real-time RT-PCR. Telomere length and hTERT expression were significantly correlated in normal mucosa and cancer tissue (p<0.001). Telomere length and hTERT expression decreased with ageing only in normal mucosa. Cancer tissue had significantly shorter telomeres (p<0.001) and significantly lower hTERT expression levels (p<0.001) than corresponding normal mucosa. UICC stage I tumors showed significantly shorter telomeres than UICC stage II-IV tumors (p<0.002). Telomere length and hTERT expression were significantly correlated with overall survival. Telomere length and hTERT expression play an important role in ageing and carcinogenesis. Both parameters were identified as prognostic factors in patients with colorectal carcinoma.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/978-3-642-59349-9_16 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association of Polycystic Ovarian Syndrome with Endothelial Health, Cardiovascular Risk, and Cellular Aging.
Fertil Steril
January 2025
Division of Reproductive Endocrinology & Infertility, University of California, San Francisco.
Objective: To study measures of endothelial health, cardiovascular risk, and cellular aging between PCOS patients and a reproductive age normative cohort.
Design: Cross-sectional study.
Subjects: Community-based PCOS patients and a normative ovarian aging cohort as controls, aged 45 or younger at the time of evaluation.
BIBR1532 inhibits proliferation and metastasis of esophageal squamous cancer cells by inducing telomere dysregulation.
World J Gastrointest Oncol
January 2025
Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China.
Background: Esophageal squamous cell carcinoma (ESCC) is a malignant tumor with high morbidity and mortality, and easy to develop resistance to chemotherapeutic agents. Telomeres are DNA-protein complexes located at the termini of chromosomes in eukaryotic cells, which are unreplaceable in maintaining the stability and integrity of genome. Telomerase, an RNA-dependent DNA polymerase, play vital role in telomere length maintain, targeting telomerase is a promising therapeutic strategy for cancer.
View Article and Find Full Text PDFYoga Practice as a Potential Sarcopenia Prevention Strategy in Indonesian Older Adults: A Cross-Sectional Study.
Open Access J Sports Med
January 2025
Prodia Clinical Laboratory, Jakarta, Indonesia.
Background: Sarcopenia is characterized by the progressive loss of skeletal muscle mass and poses a significant health challenge for older adults by increasing the risk of disability and decreasing quality of life. Yoga considers as a low-risk and beneficial exercise for older adults. This research aims to evaluate the potential of yoga practice as a preventive strategy against sarcopenia in Indonesian older adults.
View Article and Find Full Text PDFSilica-exposed patients with silicosis show shorter telomeres than do unexposed individuals: a pilot study in a population in southeastern Brazil.
J Bras Pneumol
January 2025
. Departamento de Biologia Geral, Universidade Federal Fluminense, Niterói (RJ) Brasil.
Objective: Silicosis is a pneumoconiosis characterized by fibrosis of the lung parenchyma caused by the inhalation of silica particles. Silica dust inhalation is associated with inflammation and induction of oxidative stress in the lungs. This oxidative stress affects telomeres, which are short tandem DNA repeats that cap the end of linear chromosomes.
View Article and Find Full Text PDFCausal associations between telomere length and pulmonary arterial hypertension: A two-sample Mendelian randomization study.
Medicine (Baltimore)
November 2024
State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, National Clinical Research Center of Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
Pulmonary arterial hypertension (PAH) is a life-threatening condition characterized by elevated pulmonary artery pressure, leading to right heart failure, and mortality. The role of telomere length, a marker of biological aging, in PAH remains unclear. We utilized summary-level data from genome-wide association studies for various measures of telomere length and PAH.
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!