Publications by authors named "Ramos-Zaldivar H"

Introduction: The meningeal lymphatic vessels have been described as a pathway that transports cerebrospinal fluid and interstitial fluid in a unidirectional manner towards the deep cervical lymph nodes. However, these vessels exhibit anatomical and molecular characteristics typical of initial lymphatic vessels, with the absence of surrounding smooth muscle and few or absent valves. Given its structure, this network could theoretically allow for bidirectional motion.

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Hepatic artery pseudoaneurysms are a significant health concern, often incidentally discovered during computed tomography (CT) scans, as their exact incidence rate remains unknown. The most common symptoms of a pseudoaneurysm are hematemesis, abdominal pain, anemia and jaundice. A triad of right upper quadrant pain, jaundice and overt upper gastrointestinal bleeding is a classic presentation of the condition, which occurs in only a third of patients with hemobilia.

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Coronavirus disease 2019 (Covid-19) active cases continue to demand the development of safe and effective treatments. This is the first clinical trial to evaluate the safety and efficacy of oral thymic peptides. ; We conducted a nonrandomized phase 2 trial with a historic control group to evaluate the safety and efficacy of a daily 250-mg oral dose of thymic peptides in the treatment of hospitalized Covid-19 patients.

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Article Synopsis
  • Extracellular vesicles (EVs) are cell-derived particles that can't replicate and their ability to cross the Blood-Brain barrier (BBB) is still not well understood.
  • Current research methods like transwell and organ-on-a-chip models don't fully capture the complexity of BBB interactions.
  • The review aims to explore both in vitro and in vivo methodologies for studying EV transcytosis and proposes future research techniques to enhance our understanding of EV movement across the BBB for potential therapeutic applications.
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Less than one percent of individuals with Down syndrome exhibit mosaicism, a biological phenomenon that describes an individual who has two or more genetically distinct cell lines. The percentage of mosaicism in different tissues can impact the presence of clinical findings and hinder cytogenetic diagnosis. We report a case of mosaicism for trisomy 21 diagnosed after multi-tissue cytogenetic analysis of peripheral blood and buccal mucosa, associated with significant intellectual disability, dysmorphic facial features, congenital heart defects, macropenis, and imperforate anus.

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Background: Chromosomal region 7q21.3 comprises approximately 5.2 mega base pairs that include genes DLX5/6, SHFM1, and DYNC1I1 associated with split hand/split foot malformation 1.

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