Identification of Protein Vaccine Candidates fromHelicobacter pyloriUsing a Preparative Two-Dimensional Electrophoretic Procedure and Mass Spectrometry

2000 ◽  
Vol 72 (9) ◽  
pp. 2148-2153 ◽  
Author(s):  
Carol L. Nilsson ◽  
Thomas Larsson ◽  
Elisabet Gustafsson ◽  
Karl-Anders Karlsson ◽  
Pia Davidsson
Keyword(s):  
Mass Spectrometry ◽  
Two Dimensional ◽  
Protein Vaccine ◽  
Vaccine Candidates ◽  
Electrophoretic Procedure

Proteome Analysis of CD4+ T Cells Reveals Differentially Expressed Proteins in Infertile Polycystic Ovary Syndrome Patients

2020 ◽  
Vol 20 ◽  
Author(s):  
Fatemeh Nasri ◽  
Maryam Zare ◽  
Mehrnoosh Doroudchi ◽  
Behrouz Gharesi-Fard
Keyword(s):  
Mass Spectrometry ◽  
T Cells ◽  
T Lymphocytes ◽  
Gel Electrophoresis ◽  
Cd4 T Cells ◽  
Polycystic Ovary ◽  
Proteome Analysis ◽  
Two Dimensional ◽  
Ovary Syndrome ◽  
Two Dimensional Gel Electrophoresis

Background: Polycystic ovary syndrome (PCOS) is the most frequent endocrine disorder affecting 6–7% of premenopausal women. Recent studies revealed that the immune system especially CD4+ T helper cells are important in the context PCOS. Proteome analysis of CD4+ T lymphocytes can provide valuable information regarding the biology of these cells in the context of PCOS. Objective: To investigate immune dysregulation in CD4+ T lymphocytes at the protein level in the context of PCOS using two-dimensional gel electrophoresis (2DE) and mass spectrometry (MS). Methods: In the present study, we applied two-dimensional gel electrophoresis / mass spectrometry to identify proteins differentially expressed by peripheral blood CD4+ T cells in ten PCOS women compared with ten healthy women. Western blot technique was used to confirm the identified proteins. Results: Despite the overall proteome similarities, there were significant differences in the expression of seven spots between two groups (P <0.05). Three proteins, namely phosphatidylethanolamine-binding protein 1, proteasome activator complex subunit 1 and triosephosphate isomerase 1 were successfully identified by Mass technique and confirmed by western blot. All characterized proteins were over-expressed in CD4+ T cells from patients compared to CD4+ T cells from controls (P <0.05). In-silico analysis suggested that the over-expressed proteins interact with other proteins involved in cellular metabolism especially glycolysis and ferroptosis pathway. Conclusion: These findings suggest that metabolic adjustments in CD4+ T lymphocytes, which is in favor of increased glycolysis and Th2 differentiation are important in the context of PCOS.

Analysis of synthetic canine training aids by comprehensive two-dimensional gas chromatography–time of flight mass spectrometry

2012 ◽  
Vol 1255 ◽  
pp. 202-206 ◽  
Author(s):  
Sonja Stadler ◽  
Pierre-Hugues Stefanuto ◽  
Jonathan D. Byer ◽  
Michał Brokl ◽  
Shari Forbes ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Time Of Flight ◽  
Two Dimensional ◽  
Flight Mass Spectrometry ◽  
Training Aids ◽  
Canine Training

scholarly journals Comprehensive Two-Dimensional Gas Chromatography–Mass Spectrometry Analysis of Exhaled Breath Compounds after Whole Grain Diets

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2667
Author(s):  
Kaisa Raninen ◽  
Ringa Nenonen ◽  
Elina Järvelä-Reijonen ◽  
Kaisa Poutanen ◽  
Hannu Mykkänen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Metabolic Effects ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Wheat Bread ◽  
Exhaled Breath ◽  
Two Dimensional ◽  
Whole Grain ◽  
Chromatography Mass Spectrometry

Exhaled breath is a potential noninvasive matrix to give new information about metabolic effects of diets. In this pilot study, non-targeted analysis of exhaled breath volatile organic compounds (VOCs) was made by comprehensive two-dimensional gas chromatography–mass spectrometry (GCxGC-MS) to explore compounds relating to whole grain (WG) diets. Nine healthy subjects participated in the dietary intervention with parallel crossover design, consisting of two high-fiber diets containing whole grain rye bread (WGR) or whole grain wheat bread (WGW) and 1-week control diets with refined wheat bread (WW) before both diet periods. Large interindividual differences were detected in the VOC composition. About 260 VOCs were detected from exhaled breath samples, in which 40 of the compounds were present in more than half of the samples. Various derivatives of benzoic acid and phenolic compounds, as well as some furanones existed in exhaled breath samples only after the WG diets, making them interesting compounds to study further.

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