Publications by authors named "R Mejia"
Introduction: While roll-your-own tobacco consumption is highest in Europe, increased sales are reported in Latin America. We are unaware of any research that explores the display and advertising of roll-your-own tobacco in this region.
Methods: An observational study was conducted at tobacco-selling points-of-sale (N=2,081) near schools in cities in Argentina, Guatemala, Mexico, and Peru between April and July 2023.
Background: Laparoscopic gastrectomy offers advantages in the postoperative period compared to the open approach. Most studies have been performed on distal gastrectomies; however, laparoscopic total gastrectomy (LTG) is not universally accepted. AIM: The aim of this study was to assess the results of LTG, on postoperative morbidity outcomes and long-term survival.
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- The study focused on detecting parasite DNA in soil from 34 houses in rural Yucatan, Mexico, using a specialized technique to highlight environmental reservoirs for human parasites.
- Results showed that 65% of the houses had at least one type of parasite, with Acanthamoeba spp. being the most common, while some houses even had multiple parasites detected in a single sample.
- This research emphasizes the significance of soil as a habitat for various parasites, which can pose health risks to rural communities, marking an important finding in the field of environmental health.
Article Synopsis
- Trichuris trichiura is a major soil-transmitted helminth infection affecting about 460 million individuals globally, with the Kato-Katz (K-K) method recommended for diagnosis by the WHO, despite its limitations.
- A study within a clinical trial compared the effectiveness of K-K against real-time PCR in measuring treatment outcomes for T. trichiura, finding that PCR provided a better estimation of cure rates, particularly when using a combination of anthelmintics.
- The results suggest that real-time PCR is a more reliable diagnostic tool in clinical trials for helminth infections and emphasize the need for consistent diagnostic standards across studies.
A brief history of the cortical thick ascending limb: a systems-biology perspective.
Am J Physiol Renal Physiol
January 2025
Article Synopsis
- The cortical thick ascending limb (CTAL) of the kidney was first characterized by Maurice Burg in 1973, revealing its role in actively reabsorbing NaCl while having low water permeability, allowing it to produce dilute urine during high water intake.
- In the 1980s, Greger and Schlatter identified the specific membrane transport processes for NaCl, which were further characterized at the molecular level by various researchers in the 1990s using cDNA cloning and advancements in genome sequencing.
- By the 2010s, mathematical models were developed to explore CTAL transport mechanisms, leading to investigations into Burg's 'static head' phenomenon, the adaptation of short CTALs in juxtamedullary nephrons,