User profiles for N. Sikora

Normunds Sikora

Assistant professor, Riga Stradins University
Verified email at rsu.lv
Cited by 36

Reproducible molecular networking of untargeted mass spectrometry data using GNPS

…, A Bouslimani, D Petras, JM Gauglitz, N Sikora… - Nature protocols, 2020 - nature.com
Global Natural Product Social Molecular Networking (GNPS) is an interactive online small
molecule–focused tandem mass spectrometry (MS 2 ) data curation and analysis infrastructure…

Mass spectrometry searches using MASST

…, M Panitchpakdi, E Brown, F Di Ottavio, N Sikora… - Nature …, 2020 - nature.com
To the Editor—We introduce a webenabled mass spectrometry (MS) search engine, named
Mass Spectrometry Search Tool (MASST; https://masst. ucsd. edu). By enabling searches of …

[HTML][HTML] Enhancing untargeted metabolomics using metadata-based source annotation

…, F Di Ottavio, CM Aceves, E Brown, NC Sikora… - Nature …, 2022 - nature.com
Human untargeted metabolomics studies annotate only ~10% of molecular features. We
introduce reference-data-driven analysis to match metabolomics tandem mass spectrometry (…

ReDU: a framework to find and reanalyze public mass spectrometry data

…, M Panitchpakdi, D Petras, RA Quinn, N Sikora… - Nature …, 2020 - nature.com
We present ReDU ( https://redu.ucsd.edu/ ), a system for metadata capture of public mass
spectrometry-based metabolomics data, with validated controlled vocabularies. Systematic …

Aging Stigma and the Health of US Adults Over 65: What Do We Know?

JO Allen, N Sikora - Clinical Interventions in Aging, 2023 - Taylor & Francis
This narrative review assessed the current state of research on aging stigma and health
relevant to US adults ages 65 and older. We adopted a stigma framework to highlight aging …

Untargeted mass spectrometry-based metabolomics approach unveils molecular changes in raw and processed foods and beverages

…, MW Panitchpakdi, D Petras, R Quinn, N Sikora… - Food chemistry, 2020 - Elsevier
… However, we also found a molecular family of N-acyltaurines (NATs), a recently discovered
… Both dipeptides and N-methyl histidine were detected during the 5-day aging process of the …

[HTML][HTML] Effects of Immunization With the Soil-Derived Bacterium Mycobacterium vaccae on Stress Coping Behaviors and Cognitive Performance in a “Two Hit” …

…, EJ Schaefer, M Panitchpakdi, NC Sikora… - Frontiers in …, 2021 - frontiersin.org
… gas (N 2 ) pressure of 52 lb/in 2 , auxiliary gas (N 2 ) pressure of 14 lb/in 2 , sweep gas (N
2 ) … gas (N 2 ) pressure of 52 lb/in 2 , auxiliary gas (N 2 ) pressure of 14 lb/in 2 , sweep gas (…

Use of National Early Warning Score for observation for increased risk for clinical deterioration during post-ICU care at a surgical ward

PK Klepstad, T Nordseth, N Sikora… - … and clinical risk …, 2019 - Taylor & Francis
Purpose Patients transferred from an intensive care unit (ICU) to a general ward are at risk for
clinical deterioration. The aim of the study was to determine if an increase in National Early …

Protocol for community‐created public MS/MS reference spectra within the Global Natural Products Social Molecular Networking infrastructure

F Vargas, KC Weldon, N Sikora, M Wang… - Rapid …, 2020 - Wiley Online Library
… MS spectra selected by MSMS-Chooser for N-acetylleucine in the negative ionization mode.
… Similarly, N-acetylleucine was detected as a deprotonated ([M − H] − ) species and as a [2M …

Bioorthogonal nanozymes for breast cancer imaging and therapy

…, LJ Castellanos-García, KN Sikora… - Journal of Controlled …, 2023 - Elsevier
Bioorthogonal catalysis via transition metal catalysts (TMCs) enables the generation of
therapeutics locally through chemical reactions not accessible by biological systems. This …