Examinando por Materia "Nitrites"

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  • Miniatura
    ÍtemAcceso abierto
    Critical review: Influence of nitrite and nitrate consumption associated with the predisposition and development of gastric cancer
    (Universidad Privada Norbert Wiener, 2023-05-11) Morales Hancco, Deysi Eliana; Bohórquez Medina, Andrea Lisbet
    The dietary component, specifically the excessive consumption of food additives in gastric cancer, is one of the main factors influencing the progression or clinical course of this neoplastic pathology. The present secondary research titled "Influence of Nitrite and Nitrate Consumption on the Predisposition and Development of Gastric Cancer" aimed to analyze the influence of nitrite and nitrate consumption on the development and progression of gastric cancer in adult patients. The search was performed in scientific databases such as PubMed, Scopus, EBSCO, and ProQuest, selecting 15 of the 50 reviewed articles due to their high methodological quality, meeting the exclusion criteria established by the researcher, using the CASPe tool. The meta-analysis selected was "Association Between Nitrite and Nitrate Intake and Risk of Gastric Cancer: A Systematic Review and Meta-Analysis," with an "AII" level of evidence and a "Strong" recommendation grade. It concluded that moderate or high consumption of nitrites increases the risk of developing gastric cancer by 12%, while nitrates were associated with a lower risk of gastric cancer progression, according to the critical review.
  • Miniatura
    ÍtemAcceso abierto
    Validation of the modified griess test for the detection of nitrite in urine from women of reproductive age with significant bacteriuria attended at San Bartolomé Hospital, November 2014 – January 2015
    (Universidad Privada Norbert Wiener, 1905-07-07) Guillén Cabezas, Rosa Evelyn; Gutierrez Galindo, Luz Emperatriz; Rojas León, Roberto Eugenio
    The objective of this study was to validate and determine the sensitivity, specificity, and predictive values of the modified Griess test for detecting nitrite in the urine of women of childbearing age with significant bacteriuria treated at the San Bartolomé Hospital from November 2014 to January 2015. Our research was descriptive, quantitative, and cross-sectional, as it is a primary validation study that resulted in numerical and descriptive specifications. Results showed 71.6% sensitivity, 99.4% specificity, 94.6% positive predictive value, and 96.3% negative predictive value. We concluded that the modified Griess test is not valid for detecting significant bacteriuria because it is a screening test that needs to have high sensitivity.