Publications by authors named "Fernando Sebastian Valles"

Purpose: To investigate the impact of clinical and socio-economic factors on glycaemic control and construct statistical models to predict optimal glycaemic control (OGC) after implementing intermittently scanned continuous glucose monitoring (isCGM) systems.

Methods: This retrospective study included 1072 type 1 diabetes patients (49.0% female) from three centres using isCGM systems.

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Introduction: Smoking affects glycemic control in individuals with type1 diabetes (T1D); however, its impact in the era of continuous glucose monitoring (CGM) has not been thoroughly studied.

Materials And Methods: A retrospective cohort study was conducted at two centers, involving 405 T1D patients treated with multiple daily insulin injections and using CGM. The patients were matched using propensity scores based on sociodemographic and clinical characteristics.

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Objective: This study examined the influence of smoking on glycaemic control in individuals with type 1 diabetes (T1D) using flash continuous glucose monitoring (F-CGM) systems, as well as its potential mediating role in the relationship between socioeconomic status (SES) and glycaemic control.

Methods: This study included 378 subjects with T1D (18% smokers). Glucose metrics cloud downloads were obtained over a period of 14 days.

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Objective: The objective of this study was to develop a predictive model capable of determining the need for intensive care unit (ICU) admission of patients with diabetic ketoacidosis (DKA) during their assessment in the Emergency Department.

Methods: This is an observational study of consecutive cases including all adult patients diagnosed with DKA at a tertiary hospital between 2010 and 2024. Variables from medical history, physical examination, and laboratory tests at admission were collected and studied for their association with ICU admission.

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SGLT-2 inhibitors (SGLT-2i) are linked to a higher risk of diabetic ketoacidosis (DKA). However, it is still unclear whether the severity of SGLT-2i associated DKA is higher. This is a retrospective cohort study with patients admitted for DKA at a tertiary hospital (2013-2024).

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Purpose: Low socioeconomic status (SES) correlates with higher obesity rates and challenges in accessing treatments like bariatric surgery (BS). This study aims to assess SES's influence on medium-term BS outcomes in a setting of universal healthcare, ensuring equitable treatment access.

Material And Methods: We conducted a retrospective analysis of 193 BS patients (1997-2018) at a tertiary care hospital.

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: Increased cardiovascular risk has been described in individuals with adrenal incidentalomas. The aim of the present study is to assess the effect of remnant cholesterol (RC) on the cardiovascular risk and mortality of patients with adrenal incidentalomas. : A retrospective cohort study was conducted with patients with adrenal incidentalomas between 2001 and 2024.

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Although the focus in the last decades has been on the overdiagnosis of incidentally detected thyroid carcinomas in early stages, the other extreme of the disease is represented by locally advanced tumors with the invasion of neighboring structures. These are infrequent tumors, but they have a high complexity and a poor prognosis. In the absence of effective therapies allowing preoperative tumor reduction, in order to achieve a more restricted surgery, treatment was limited to aggressive surgery with resection of the aerodigestive tract and major vascular structures or palliative treatment.

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Aims: This study aimed to investigate the association between glucose metrics and diabetic retinopathy in type 1 diabetes (T1D) patients using flash continuous glucose monitoring (FGM) systems, including those maintaining glycated hemoglobin (HbA1c) within the target range.

Methods: We conducted a cross-sectional study involving 1070 T1D patients utilizing FGM systems. Data on clinical, anthropometric, and socioeconomic characteristics were collected and retinopathy was classified based on international standards.

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Purpose: Alpelisib is a PI3K (Phosphoinositide 3-kinases) inhibitor used for breast cancer which develops hyperglycemia based on its action on glucose metabolism regulation. This study aims to identify potential risk factors predicting hyperglycemia development and the need for multiple treatments for hyperglycemia in patients receiving Alpelisib.

Methods: Fourteen women diagnosed with metastatic hormone receptor-positive breast cancer carrying PI3K mutations who initiated treatment with Alpelisib were monitored through consultations in the Oncology and Endocrinology departments.

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Objective: Treatment with cystic fibrosis transmembrane conductance regulator (CFTR) modulators in individuals with cystic fibrosis (CF) has brought a significant change in forced expiratory volume in 1 second (FEV) and clinical parameters. However, it also results in weight gain. The aim of our study is to evaluate the effect of CFTR modulator treatment on body composition, measured by computed tomography (CT).

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Purpose: Migraine is the comorbidity most frequently associated with visual snow syndrome (VSS), but the prevalence of VSS in patients with migraine (PWM) has not been studied. Our objective was to evaluate the frequency of VSS in PWM and to analyze if symptoms of VSS happened in a permanent or episodic manner (eVSS) in this population.

Methods: We conducted a multicenter observational cross-sectional study.

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Pituitary neuroendocrine tumors (PitNETs) account for approximately 15% of all intracranial neoplasms. Although they usually appear to be benign, some tumors display worse behavior, displaying rapid growth, invasion, refractoriness to treatment, and recurrence. Increasing evidence supports the role of primary cilia (PC) in regulating cancer development.

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Article Synopsis
  • Malnutrition is a common issue in Cystic Fibrosis (CF) that negatively affects lung function, but new therapies like elexacaftor-tezacaftor-ivacaftor (ELX/TEZ/IVA) are improving patient care and outcomes.
  • This study evaluated 36 patients with CF to see how ELX/TEZ/IVA affected their body composition (using Bioelectrical Impedance Analysis) and respiratory function (spirometry), taking measurements before and after six months of treatment.
  • Results showed a significant increase in Body Mass Index (BMI), fat mass, and lung function (%FEV1), with correlations indicating that higher fat mass was associated with lower lung function, while better lung
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Objective: Christmas holidays can impact weight and glycemic control in type 2 diabetes, but their effect on type 1 diabetes (T1D) remains understudied. This study assessed how Christmas holidays affect individuals with T1D who use flash continuous glucose monitoring systems.

Methods: This retrospective study involved 812 adults diagnosed with T1D recruited from 3 hospitals.

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Background: This study investigates the association between socioeconomic status (SES) and glycemic control in individuals with type 1 diabetes (T1D) using flash glucose monitoring (FGM) devices within a public health system where these technologies are freely available and utilized according to recommended guidelines.

Methods: A follow-up study of 1060 adults (mean age 47.4 ± 15.

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Aims: This study aimed to determine the minimum frequency of flash glucose monitoring (FGM) scans necessary for optimal glycemic control in patients with type 1 diabetes (T1D).

Methods: Data were collected from 692 patients (47.5% female, with a median age of 47.

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Introduction: Advanced hybrid closed-loop (AHCL) systems have demonstrated improved glycemic control in individuals with Type 1 Diabetes Mellitus. The aim of this study is to compare patient satisfaction among three available AHCL systems (Medtronic Minimed780 G, Roche Diabeloop DBLG1, and Tandem t:slim X2 Control IQ) after six months of treatment and to determine if it is related to glycemic control.

Methods: The data of 75 individuals were analyzed, including 15 using the DBLG1 system, 9 using Control IQ, and 51 using MM780 G.

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Unlabelled: Cystic fibrosis-related diabetes (CFRD) is a complication associated with a negative prognosis in patients with cystic fibrosis (CF). Although the oral glucose tolerance test (OGTT) is the widely recommended screening test for CFRD diagnosis, continuous glucose monitoring (CGM) is increasingly considered a useful and easy-to-perform test for diagnosis and follow-up in clinical practice. Regarding CFRD treatment, although insulin is the classic approved pharmacological option, incretins could also be a helpful alternative in early stages.

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Background: Type 1 gastric neuroendocrine tumors (GC-1) represent an uncommon subtype of neoplasms. Endoscopic resection has been proposed as the treatment of choice; active surveillance may be performed in those smaller than 1 cm, while gastric surgery may be performed for those with frequent recurrences. The antiproliferative effect of somatostatin analogues (SSA) is well known, and their action on GC-1s has been postulated as a chronic treatment to reduce recurrence.

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Article Synopsis
  • Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are rare and can lead to malnutrition and cachexia, making body composition assessment important for prognosis.
  • A study involving 98 GEP-NET patients used CT scans to analyze muscle and fat at diagnosis and follow-up, noting correlations with clinical variables that affect survival.
  • While initial body composition did not predict survival, a decline in good quality muscle over time was linked to higher overall and tumor-related mortality, suggesting that monitoring nutrition and improving muscle quality could enhance patient outcomes.
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Introduction: Alpelisib is an orally selective PI3K alpha inhibitor recently available for the treatment of advanced breast cancer. PI3K pathway is an intracellular signaling pathway that plays an important role in regulating glucose metabolism. Hyperglycemia is the most common adverse event associated.

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MicroRNAs (MiRNAs) are small RNA molecules that can exert regulatory functions in gene expression. MiRNAs have been identified in diverse tissues and biological fluids, both in the context of health and disease. Breastfeeding has been widely recognized for its superior nutritional benefits; however, a number of bioactive compounds have been found to transcend these well-documented nutritional contributions.

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