Publications by authors named "CHACON E"

Article Synopsis
  • The study assessed changes in population structure, reproductive performance, inbreeding, and genetic diversity in Charolais cattle using genealogical data from the Ecuadorian Charolais Association.
  • It divided the data into five time periods, analyzing factors like pedigree completeness, generation interval, inbreeding levels, and effective population size with specific software.
  • Results showed a decrease in pedigree completeness and generation interval over time, an increase in inbreeding, and a progressive loss of genetic diversity, but female reproductive efficiency improved, suggesting a need for genetic resource management to address inbreeding issues.
View Article and Find Full Text PDF

Introduction: Intradialytic hypertension (IDH) is a poorly understood phenomenon with no consensus on its definition, etiology, or related factors, and there is limited evidence on its consequences.

Objective: To determine the prevalence of IDH according to different definitions in hemodialysis (HD) units, with different clinical practices and assessment of possible events after 18 months have passed.

Materials And Methods: A cross-sectional observational study was conducted in 2 HD units, including all prevalent patients from March 2021 to September 2022.

View Article and Find Full Text PDF

Objective: Management of endometrial cancer is advancing, with accurate staging crucial for guiding treatment decisions. Understanding sentinel lymph node (SLN) involvement rates across molecular subgroups is essential. To evaluate SLN involvement in early-stage (International Federation of Gynecology and Obstetrics 2009 I-II) endometrial cancer, considering molecular subtypes and new European Society of Gynaecological Oncology (ESGO) risk classification.

View Article and Find Full Text PDF

Biomarkers for cancer immunotherapy are an unmet medical need. The group of Daniela Thommen at the NKI recently reported on novel methodologies based on short-term cultures of patient-derived tumor fragments whose cytokine concentrations in the supernatants and activation markers on infiltrating T cells were associated with clinical response to PD-1 blockade. We set up a similar culture technology with tumor-derived fragments using mouse tumors transplanted into syngeneic immunocompetent mice to test an agonist anti-CD137 mAb and its combinations with anti-PD-1 and/or anti-TGF-β.

View Article and Find Full Text PDF

Objective: The aim of this study was to compare the incidence of intra-operative and post-operative complications in open and minimally invasive radical hysterectomy for patients with early-stage cervical cancer.

Methods: Data were collected from the SUCCOR database of 1272 patients with stage IB1 cervical cancer (International Federation of Gynecology and Obstetrics (FIGO), 2009) who underwent radical hysterectomy in Europe between January 2013 and December 2014. We reviewed the duration of the surgeries, estimated blood loss, length of hospital stay, intra-operative and post-operative complications.

View Article and Find Full Text PDF

Collagen is the most abundant structural protein in mammals. Type I collagen in its fibril form has a characteristic pattern structure that alternates two regions called gap and overlap. The structure and properties of collagens are highly dependent on the water and mineral content of the environment.

View Article and Find Full Text PDF

Background: Currently, a lively debate exists within the scientific community regarding the most suitable procedure for treating stages IIIB-IVB carcinoma of the ovary, fallopian tubes, and peritoneum. The options under most consideration are primary cytoreductive surgery or neoadjuvant chemotherapy followed by interval cytoreductive surgery.

Primary Objective: To compare overall survival at 5 years in patients who underwent primary cytoreductive surgery versus neoadjuvant chemotherapy and interval cytoreductive surgery for stage IIIB-IVB ovarian cancer STUDY HYPOTHESIS: The treatment with primary cytoreductive surgery results in superior patient survival compared with neoadjuvant chemotherapy followed by interval cytoreductive surgery.

View Article and Find Full Text PDF

Objective: To assess the diagnostic performance of transvaginal sonography (TVS) for the preoperative evaluation of lymph-node metastasis in gynecological cancer.

Methods: This was a systematic review and meta-analysis of studies published between January 1990 and May 2023 evaluating the role of ultrasound in detecting pelvic lymph-node metastasis (index test) in gynecological cancer, using histopathological analysis as the reference standard. The quality of included studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies-2 tool.

View Article and Find Full Text PDF

The field of gynecologic oncology has witnessed a profound transformation in the practice of bowel resection over the years. This evolution, driven by innovative techniques and expanded surgical skills, has redefined the role of the surgeon. This review article delves into the historical journey of bowel surgery, its contemporary importance in cytoreductive procedures for gynecologic cancers, and the general principles of digestive surgery.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to create a consensus on the surgical technique for sentinel lymph node dissection in cervical cancer by surveying expert gynecological oncology surgeons.
  • A two-step modified Delphi method was employed, involving initial surveys and follow-up interviews, with a 70% agreement threshold for consensus.
  • Findings indicated that experts reached consensus on 15 recommended practices, including the use of indocyanine green as a tracer and specific injection techniques, while recommending against certain procedures such as injecting directly into tumors.
View Article and Find Full Text PDF
Article Synopsis
  • The study aims to evaluate the prognostic impact of isolated tumor cells in sentinel lymph nodes (SLNs) of low-risk endometrial cancer patients who did not receive additional therapy.
  • A total of 494 patients were analyzed, finding that recurrence rates were higher in those with SLN-isolated tumor cells, with significant differences in recurrence-free survival between this group and node-negative patients.
  • Although isolated tumor cells were associated with poorer recurrence-free outcomes, no significant differences in overall survival between the two groups were observed.
View Article and Find Full Text PDF

Background: Tinnitus is the perception of sound in the absence of external acoustic stimulation. Being one of the most common diseases of the ear, it has a global prevalence ranging from 4.1 to 37.

View Article and Find Full Text PDF

In this review, we aimed to assess the diagnostic performance of ultrasound for assessing the tumor spread in the abdomen in women with ovarian cancer. A search for studies evaluating the role of ultrasound for assessing intrabdominal tumor spread in women with ovarian cancer compared to surgery from January 2011 to March 2023 was performed in PubMed/MEDLINE, Web of Science, and Scopus databases. The Quality Assessment of Diagnostic Accuracy Studies 2 evaluated the quality of the studies (QUADAS-2).

View Article and Find Full Text PDF

Objective: To assess the diagnostic accuracy of intraoperative SLN frozen section analysis compared with ultrastaging in patients with early-stage cervical cancer.

Methods: A systematic literature review was conducted following the PRISMA checklist. MEDLINE (via Ovid), Embase, and the Cochrane Central Register of Controlled Trials were searched from inception until February 2023.

View Article and Find Full Text PDF

Background: Sentinel lymph node (SLN) biopsy has recently been accepted to evaluate nodal status in endometrial cancer at early stage, which is key to tailoring adjuvant treatments. Our aim was to evaluate the national implementation of SLN biopsy in terms of accuracy to detect nodal disease in a clinical setting and oncologic outcomes according to the volume of nodal disease.

Patients And Methods: A total of 29 Spanish centers participated in this retrospective, multicenter registry including patients with endometrial adenocarcinoma at preoperative early stage who had undergone SLN biopsy between 2015 and 2021.

View Article and Find Full Text PDF

Background: The SUCCOR cohort was developed to analyse the overall and disease-free survival at 5 years in women with FIGO 2009 stage IB1 cervical cancer. The aim of this study was to compare the use of adjuvant therapy in these women, depending on the method used to diagnose lymphatic node metastasis.

Patients And Methods: We used data from the SUCCOR cohort, which collected information from 1049 women with FIGO 2009 stage IB1 cervical cancer who were operated on between January 2013 and December 2014 in Europe.

View Article and Find Full Text PDF

Objective: The primary objective was to reveal the impact of social media ambassadors and the collaboration between the European Society of Gynaecological Oncology (ESGO) and the OncoAlert Network on Twitter during the ESGO 2022 Congress by comparing it with the ESGO 2021 Congress. We also aimed to share our experience on how to organize a social media ambassador program and evaluate the potential benefits for the society and the ambassadors.

Methods: We defined the impact as promoting the congress, sharing the knowledge, change in follower count, and change in tweet, retweet, and reply counts.

View Article and Find Full Text PDF

Objective: To determine the best second-step approach for discriminating benign from malignant adnexal masses classified as inconclusive by International Ovarian Tumour Analysis Simple Rules (IOTA-SR).

Methods: Single-center prospective study comprising a consecutive series of patients diagnosed as having an adnexal mass classified as inconclusive according to IOTA-SR. All women underwent Risk of Ovarian Malignancy Algorithm (ROMA) analysis, MRI interpreted by a radiologist, and ultrasound examination by a gynecological sonologist.

View Article and Find Full Text PDF

Objective: To determine oncological outcomes and associated prognostic factors in women younger than 45 years diagnosed with non-epithelial ovarian cancer.

Methods: A retrospective, multicenter Spanish study was performed including women with non-epithelial ovarian cancer younger than 45 years between January 2010 and December 2019. All types of treatments and stages at diagnosis with at least 12 months of follow-up were collected.

View Article and Find Full Text PDF
Article Synopsis
  • Noroviruses (NoV) and sapoviruses (SaV) are key causes of gastrointestinal infections in both humans and animals, but their potential to spread between species had not been fully explored.
  • This study analyzed stool samples from humans and various animals to investigate the prevalence and genetic relationships of NoV and SaV strains between these species.
  • Results indicated that NoV strains were present in humans, dogs, pigs, and cows, suggesting a significant risk of zoonotic transmission, particularly with HuNoV GII.4, while SaV showed limited zoonotic potential.
View Article and Find Full Text PDF

Background: Diagnostic accuracy for estimating myometrial infiltration by ultrasound in endometrial cancer requires experience. The objective of this study is to determine the learning curve (LC) for assessing myometrial infiltration in cases of endometrial cancer using transvaginal ultrasound (TVS).

Methods: Five trainees (one staff radiologist and four fourth-year OB/GYN residents) participated in this study.

View Article and Find Full Text PDF