301 results match your criteria: "Hospital de Cardiología CMN Siglo XXI[Affiliation]"

Exploring the Mechanisms Underlying Cellular Uptake and Activation of Dendritic Cells by the GK-1 Peptide.

ACS Omega

December 2024

Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México MX 04510, Mexico.

The use of peptides for cancer immunotherapy is a promising and emerging approach that is being intensively explored worldwide. One such peptide, GK-1, has been shown to delay the growth of triple-negative breast tumors in mice, reduce their metastatic capacity, and reverse the intratumor immunosuppression that characterizes this model. Herein, it is demonstrated that GK-1 is taken up by bone marrow dendritic cells in a dose-dependent manner 15 min after exposure, more efficiently at 37 °C than at 4 °C, implying an entrance into the cells by energy-independent and -dependent processes through clathrin-mediated endocytosis.

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Central expression and peripheral levels of MMP-9 and TIMP-1 in patients with temporal lobe epilepsy.

Epilepsy Behav

January 2025

Unidad de Neuro Inflamación, Departamento de Medicina Genómica y Toxicología ambiental, Instituto de Investigación Biomédicas, Universidad Nacional Autónoma de México/ Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez (INNN-MVS), México; Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, México. Electronic address:

Purpose: Thirty percent of epilepsy patients are drug-resistant (DR) and, in adults, temporal lobe epilepsy (TLE) is the most common form of DR- epilepsy. Patients with TLE exhibit a neuroinflammatory response associated with blood-brain barrier dysfunction. In this context, the main aim of our study was to evaluate peripheral levels and central expression of MMP-9 and TIMP-1 in TLE patients and assess their association with drug resistance and inflammatory markers.

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Effect of the Complex Allele p.[Ile148Thr;Ile1023_Val1024del] in Cystic Fibrosis and Tracing of a Founder Effect in Mexican Families.

Life (Basel)

November 2024

Immunogenomics and Metabolic Diseases Laboratory, Instituto Nacional de Medicina Genómica, Secretaría de Salud, Tlalpan, Mexico City 14610, Mexico.

Cystic fibrosis (CF) is a rare autosomal recessive disease most commonly affecting the Caucasian population. CF diagnosis can be a challenge due to the large spectrum of pathogenic variants in the CFTR gene and the effects of complex alleles. Next-generation sequencing has improved our understanding of the contribution of these complex alleles to the wide spectrum of CF clinical symptoms and to the response to medications.

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The Hugo robotic assisted surgery system is a relatively new robotic platform developed by Medtronic. The study objective was to describe the experience of using Hugo robotic assisted surgery in gynecological surgeries and compare robotic assisted surgery-related outcomes between complex and non-complex gynecological patients at the Pacifica Salud Hospital. We performed secondary data retrospective analysis of 144 consecutive patients who underwent gynecological surgery with Hugo robotic assisted surgery system (Medtronic) at the Pacifica Salud hospital in Panama City from July 19, 2021, to August 3, 2023.

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In Vitro Purging of Acute Lymphoblastic Leukemia (B-ALL) Cells with the Use of PTL, DMAPT, or PU-H71.

Int J Mol Sci

October 2024

Laboratorio de Células Troncales Tumorales, Unidad de Investigación Médica en Enfermedades Oncológicas, CMN Siglo XXI, Instituto Mexicano del Seguro Social, CDMX 06725, Mexico.

Acute lymphoblastic leukemia (ALL) is a hematopoietic disorder that mainly affects the child population, and it is characterized by the presence of lymphoid progenitor or precursor cells with different genetic alterations. The origin of this disease is controversial, since some authors assumed that leukemic transformation occurs in a lymphoid progenitor, and there is also evidence that suggests the existence of leukemic initiating cells (LIC). PTL, DMAPT, and PU-H71 are agents that have been shown to eliminate bulk and stem cells from myeloid leukemias, but this effect has not been analyzed in lymphoblastic leukemias.

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Occult Hepatitis B Virus Infection in Hepatic Diseases and Its Significance for the WHO's Elimination Plan of Viral Hepatitis.

Pathogens

August 2024

Unidad de Investigación Biomédica Oncológica Genómica, Hospital de Gineco Pediatría 3-A, Instituto Mexicano del Seguro Social, Órgano de Operación Administrativa Desconcentrada (OOAD) Cd Mx Norte, Ciudad de Mexico 07760, Mexico.

Liver damage can progress through different stages, resulting in cirrhosis or hepatocellular carcinoma (HCC), conditions that are often associated with viral infections. Globally, 42% and 21% of cirrhosis cases correlate with HBV and HCV, respectively. In the Americas, the prevalence ranges from 1% to 44%.

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Congenital heart disease (CHD) can be complicated by pulmonary arterial hypertension (PAH). Cardiopulmonary bypass (CPB) for corrective surgery may cause endothelial dysfunction, involving endothelin-1 (ET-1), circulating endothelial cells (CECs), and endothelial progenitor cells (EPCs). These markers can gauge disease severity, but their levels in children's peripheral blood still lack consensus for prognostic value.

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This study aimed to determine the feasibility of applying machine-learning methods to assess the progression of chronic kidney disease (CKD) in patients with coronavirus disease (COVID-19) and acute renal injury (AKI). The study was conducted on patients aged 18 years or older who were diagnosed with COVID-19 and AKI between April 2020 and March 2021, and admitted to a second-level hospital in Mérida, Yucatán, México. Of the admitted patients, 47.

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Splenocytes and thymocytes migration patterns between lymphoid organs in pregnancy.

Biochem Biophys Rep

September 2024

Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación Carpio s/n esq, Plan de Ayala, Plutarco Elías Calles, CP 11340, Ciudad de México, Mexico.

Article Synopsis
  • Cell migration plays a crucial role in the immune system, but it is not well-studied in pregnant animals, despite observed increases in spleen and lymph node sizes during pregnancy.
  • In the study, researchers used a mouse model to analyze the movement of PKH26-stained immune cells from pregnant and non-pregnant mice to see how pregnancy affects cell distribution in lymphoid organs.
  • Results showed that while more thymocytes were present in females compared to males, the movement of immune cells from pregnant and non-pregnant mice was similar, suggesting that larger spleen and lymph node sizes in pregnant mice may be due to leukocyte retention rather than differences in cell migration.
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Objectives: This study aimed to explore the acceptability, feasibility, usability, and preliminary effect of an electronic patient-reported outcome (ePRO) intervention for patients with breast cancer in Mexico.

Design: We conducted a multimethod non-randomised pilot study. We used a pre-test/post-test design for quantitative assessment of the intervention's effect on patients' supportive care needs and quality of life.

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Acute lung injury is prevented by monocyte locomotion inhibitory factor in an experimental severe malaria mouse model.

Immunobiology

July 2024

Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico. Electronic address:

Acute lung injury caused by severe malaria (SM) is triggered by a dysregulated immune response towards the infection with Plasmodium parasites. Postmortem analysis of human lungs shows diffuse alveolar damage (DAD), the presence of CD8 lymphocytes, neutrophils, and increased expression of Intercellular Adhesion Molecule 1 (ICAM-1). P.

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Sociodemographic and Lifestyle Characteristics Associated with Maternal Dietary Patterns in Mexico.

Nutrients

May 2024

Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública de México (INSP), Cuernavaca 62100, Morelos, Mexico.

There is scarce evidence on sociodemographic and lifestyle characteristics that may explain adherence to different dietary patterns (DPs) during pregnancy. Our aims were to identify dietary patterns in a sample of pregnant Mexican women and to describe their association with selected sociodemographic and lifestyle characteristics. This is a secondary cross-sectional analysis of 252 mothers of children that participated as controls in a hospital-based case-control study of childhood leukemia.

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The article discusses the importance of accurately distinguishing HER2-low from HER2-negative breast cancer, as novel ADCs have demonstrated activity in a large population of patients with HER2-low-expressing BC. While current guidelines recommend a dichotomous classification of HER2 as either positive or negative, the emergence of the HER2-low concept calls for standardization of HER2 testing in breast cancer, using currently available assays to better discriminate HER2 levels. This review covers the evolution and latest updates of the ASCO/CAP guidelines relevant to this important biomarker in breast cancer, including still-evolving concepts such as HER2 low, HER2 heterogeneity, and HER2 evolution.

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Article Synopsis
  • The study investigates genetic alterations in pediatric B-cell Acute Lymphoblastic Leukemia (B-ALL) in Mexican patients, focusing on their impact on prognosis and treatment.
  • A total of 206 patients were analyzed, revealing a notable 21.8% prevalence of specific genetic profiles linked to poorer outcomes and indicating higher risk stratification among the affected.
  • The findings suggest that these genetic markers significantly influence overall survival, with variations in mutation frequency compared to other populations, highlighting the need for genomic considerations in treatment strategies.
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Introduction: Previous studies have reported a correlation between a high-grade CMV-infection and an unfavorable prognosis in glioblastoma (GB). Coversely, epilepsy has been associated with a more favorable outcome in GB patients. Despites epilepsy and CMV share similar molecular mechanisms in GB tumoral microenvironment, the correlation between Tumor-Related-Epilepsy (TRE) and CMVinfection remains unexplored.

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pathogenic variants spectrum in a cohort of Mexican patients with cystic fibrosis.

Heliyon

April 2024

Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genomica, SS, Tlalpan, 14610, Mexico City, Mexico.

Background: Molecular diagnosis of cystic fibrosis (CF) is challenging in Mexico due to the population's high genetic heterogeneity. To date, 46 pathogenic variants (PVs) have been reported, yielding a detection rate of 77%. We updated the spectrum and frequency of PVs responsible for this disease in mexican patients.

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Good clinical practice recommendations for the diagnosis and treatment of gastroesophageal reflux disease. An expert review from the Asociación Mexicana de Gastroenterología.

Rev Gastroenterol Mex (Engl Ed)

April 2024

Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.

Article Synopsis
  • GERD is a common and diverse condition that requires precise diagnosis and tailored treatment.
  • A group of experts created 27 recommendations to improve clinical practices related to recognizing symptoms, using diagnostic tests, and managing GERD in various patient populations.
  • These guidelines aim to assist healthcare providers in accurately diagnosing and effectively treating patients with GERD, leading to personalized care.
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Background: A heterogeneous geographic distribution of childhood acute lymphoblastic leukemia (ALL) cases has been described, possibly, related to the presence of different environmental factors. The aim of the present study was to explore the geographical distribution of childhood ALL cases in Greater Mexico City (GMC).

Methods: A population-based case-control study was conducted.

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Article Synopsis
  • Epidemiological studies on acute leukemia (AL) risk factors in infants are limited, but maternal diet during pregnancy may play a crucial role in influencing the occurrence of AL in offspring.
  • A case-control study conducted in Mexico City from 2010 to 2019 analyzed maternal dietary habits in 109 infants with AL compared to 252 matched controls, using food frequency questionnaires.
  • Results indicated that higher consumption of allium vegetables was linked to a reduced risk of AL, while high-fat dairy products were associated with an increased risk, highlighting the potential impact of maternal nutrition on infant health.
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Introduction: In cardiorenal syndrome type 1 (CRS1), vascular congestion is central to the pathophysiology of heart failure and thus a key target for management. The venous evaluation by ultrasound (VExUS) system could guide decongestion effectively and thereby improve outcomes.

Methods: In this randomized clinical trial, patients with CRS1 (i.

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Objectives: To analyze the clinical utility of a clinical risk scale to predict the need for advanced airway management in patients with deep neck abscess.

Methods: Observational, analytical, cross-sectional study. Patients over 18 years old, both genders, with surgical management of a deep neck abscess, between January 1st, 2015 to December 31th, 2021, who were applied the clinical risk scale (https://7-414-5-19.

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Article Synopsis
  • Childhood cancer, especially acute leukemia, is the leading cause of disease-related deaths in children aged 5-14 in Mexico, highlighting the need for understanding dietary influences during pregnancy.
  • A hospital-based study compared dietary habits of mothers of 109 infants with acute leukemia to those of 152 healthy controls, showing that overall maternal dietary patterns can significantly impact infant health.
  • The findings indicate that a "Balanced & Vegetable-Rich" diet during pregnancy is associated with a lower risk of acute leukemia in infants, particularly for mothers of girls, emphasizing the role of maternal nutrition in disease prevention.
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Association of the rs5186 polymorphism of the AGTR1 gene with decreased eGFR in patients with type 2 diabetes from Mexico City.

Nefrologia (Engl Ed)

December 2023

Unidad de Investigación Médica en Bioquímica, Unidad Médica de Alta Especialidad "Dr. Bernardo Sepúlveda", Centro Médico Nacional Siglo XXI, IMSS, Ciudad de México, México. Electronic address:

Background: Early biomarkers search for Diabetic Kidney Disease (DKD) in patients with Type 2 Diabetes Mellitus (T2DM), as genetic markers to identify vulnerable carriers of the disease even before Glomerular Filtration Rate (GFR) decline or microalbuminuria development, has been relevant during the last few years. The rs5186 (A116C) polymorphism of the Angiotensin II Receptor Type I gene (AGTR1), has been associated to multiple effects of renal injury risk, commonly detected in patients with Diabetes Mellitus (DM). It has been described that rs5186 could have an effect in stability proteins that assemble Angiotensin II Receptor Type I (AT1), modifying its action, which is why it should be considered as a risk factor for Chronic Kidney Disease (CKD), characterized by a GFR progressive reduction.

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Background: Previous studies found exposure to air pollution leads to exacerbations of asthma in paediatric and adult patients and increases asthma-related emergency hospital admissions (AREHA).

Methods: AREHAs and levels of air pollutants (PM, PM and NO) were obtained from Mexico City for the period 2017-2019. A time-series approach was used to explore the relationship between air pollutants and AREHA.

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