Person:
Iniesta Serrano, María Pilar

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First Name
María Pilar
Last Name
Iniesta Serrano
URI
https://hdl.handle.net/20.500.14352/77587
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Farmacia
Department
Bioquímica y Biología Molecular
Area
Bioquímica y Biología Molecular
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2021 - 20222
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Author: García Martínez, Sergio ×

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Now showing 1 - 2 of 2
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    Obesity and telomere status in the prognosis of patients with colorectal cancer submitted to curative intention surgical treatment
    (Molecular and Clinical Onclogy, 2021) García Martínez, Sergio; González Gamo, Daniel; Fernández Marcelo, Tamara; Tesolato, Sofía; De La-Serna Esteban, Sofía Cristina; Domínguez Serrano, María Inmaculada; Cano Valderrama, Óscar; Barabash Bustelo, Ana; Juan Chocano, María Del Carmen De; Torres García, Antonio José; Iniesta Serrano, María Pilar
    The risk of colorectal cancer (CRC) development has been associated with telomere dysfunction and obesity. However, clinical relevance of these parameters in CRC prognosis is not clear. Therefore, the aim of the present study was to evaluate the impact of obesity and telomere status in the prognosis of patients affected by CRC and submitted to curative surgical treatment. According to published data, this is the first work in which obesity and telomere status are jointly considered in relation to CRC prognosis. A prospective study including 162 patients with CRC submitted to curative surgical treatment was performed. Subjects were classified according to their BMI. Telomere status was established through telomere length and telomerase activity evaluation. Statistical analyses were performed using the SPSS software package version 22. Telomere shortening was inversely associated with BMI in patients with CRC. Notably, among patients with CRC, subjects with obesity exhibited less shortening of tumor telomeres than non‑obese patients (P=0.047). Patients with shorter telomeres, both in the tumor (median telomere length <6.5 kb) and their non‑tumor paired tissues (median telomere length <7.1 kb), had the best clinical evolution, regardless of the Dukes' stage of cancers (P=0.025, for tumor samples; P=0.003, for non‑tumor samples). Additionally, subjects with a BMI >31.85 kg/m2 showed the worse clinical outcomes compared with subjects with other BMI values. Interestingly, the impact of BMI showed sex dependence, since only the group of men displayed significant differences in CRC prognosis in relation to obesity status (P=0.037). From the results of the present study, based on a multivariate prediction model to establish prognosis, it was concluded that telomere length is a useful biomarker to predict prognosis in patients with CRC. Regardless of BMI values, the improved clinical evolution was associated with shorter telomeres. The impact of BMI seems to be associated with other factors, such as sex.
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    Telomere Length and Telomerase Activity in Subcutaneous and Visceral Adipose Tissues from Obese and Non-Obese Patients with and without Colorectal Cancer
    (Cancers, 2022) García Martínez, Sergio; González Gamo, Daniel; Tesolato, Sofía Elena; Barabash Bustelo, Ana; De La-Serna Esteban, Sofía Cristina; Domínguez Serrano, María Inmaculada; Dziakova, Jana; Rivera, Daniel; Torres García, Antonio José; Iniesta Serrano, María Pilar; Luis M. Montuenga
    To investigate the molecular mechanisms that link obesity and colorectal cancer (CRC), we analyzed parameters related to telomere function in subcutaneous and visceral adipose tissues (SAT and VAT), including subjects with and without CRC, who were classified according to their body mass index (BMI). Adipose tissues were obtained from 147 patients who had undergone surgery. A total of 66 cases corresponded to CRC patients, and 81 subjects were not affected by cancer. Relative telomere length was established by qPCR, and telomerase activity was determined by a method based on the telomeric repeat amplification protocol. Our results indicated longer telomeres in patients affected by CRC, both in SAT and VAT, when compared to the group of subjects without CRC. Tumor local invasion was associated with telomere length (TL) in SAT. Considering the BMI values, significant differences were found in the TL of both adipose tissues between subjects affected by CRC and those without cancer. Overweight subjects showed the greatest differences, with longer telomeres in the group of CRC patients, and a higher number of cases with telomerase reactivation in the VAT of subjects without cancer. In conclusion, parameters related to telomere function in adipose tissue could be considered as potential biomarkers in the evaluation of CRC and obesity.