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Clinical

Gene expression profiling of patients with allergy to latex and/or vegetable food - GSE13619

Purpose

The aims of this study were to identify candidate genes that may be associated with the pathogenesis of allergy to latex and /or vegetable food, and to assess if similar molecular pathways are involved in both types of hypersensitivity.

Hypothesis

As latex and vegetable food allergens cross-react, it could be hypothesized that similar pathways are involved in both types of hypersensitivity.

Experimental Design

For this purpose, patients allergic to latex (n=6), allergic to vegetable food (n=5), or suffering from latex-fruit syndrome (n=6) were enrolled from the Unit of Allergy of the Gemelli Hospital of Rome. Moreover, 4 healthy volunteers were added to this study. Five ml of blood were harvested from each individual, and PBMCs were isolated on ficoll gradient. Following sample preparation (as recommended by the manufacturer), each sample was hybridized on Affymetrix human focus array. Data were processed with Affymetrix MAS 5.0 software and averaged intensity of signals from biological replicates were calculated for further analysis.

Experimental Variables

Type of allergy

Controls

Healthy volunteers

Methods

DNA microarray analysis was performed to screen the molecular profiles of peripheral blood mononuclear cells isolated from patients with allergy to latex, to fruit, or with latex-fruit syndrome, and from control healthy subjects.

Additional Information

The prevalence of individuals allergic to latex, exhibiting cross-hypersensitivity with plant-derived food has been frequently reported as the so-called latex-fruit syndrome. Nonetheless, molecular mechanisms underlying allergy to latex and/or fruit are poorly understood

Microarray
Affymetrix HG-Focus v1
21 Samples Loaded: 21
Human (Homo sapiens)
PBMC
Allergy
Blood mononuclear cells (PBMCs) were isolated on a ficoll gradient from 5ml of blood harvested from a healthy control volunteer.
RNA was isolated from PBMCs using RNeasy mini kit (Qiagen) according to the manufacturer's instructions. A specific DNA digestion step on column was added to remove contaminating DNA.
Sample Set Spreadsheet
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Samples Preview
Sample ID !Sample Title PBMC Allergy type
GSM343010 healthy individual 1 TRUE Healthy
GSM343011 healthy individual 2 TRUE Healthy
GSM343012 healthy individual 3 TRUE Healthy
GSM343023 healthy individual 4 TRUE Healthy
GSM343024 Fruit allergy patient 1 TRUE Fruit
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File
sampleset4000090_sampleannotations_v1.csv
Sample Set Spreadsheet
sampleset4000090_sampleannotations_v1.csv
Sample Set Spreadsheet
Raw Signal
Raw Signal
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Samples Viewer / Editor

All fields are editable except the "Sample ID" column. To edit a cell, click within the cell. To edit a "date" cell, click on the calendar icon. To cancel an edit, press the ESC key.

Sample ID !Sample Title PBMC Allergy type
GSM343010
healthy individual 1
TRUE
Healthy
GSM343011
healthy individual 2
TRUE
Healthy
GSM343012
healthy individual 3
TRUE
Healthy
GSM343023
healthy individual 4
TRUE
Healthy
GSM343024
Fruit allergy patient 1
TRUE
Fruit
GSM343025
Fruit allergy patient 2
TRUE
Fruit
GSM343026
Fruit allergy patient 3
TRUE
Fruit
GSM343027
Fruit allergy patient 4
TRUE
Fruit
GSM343028
Fruit allergy patient 5
TRUE
Fruit
GSM343200
Latex allergy patient 1
TRUE
Latex
GSM343201
Latex allergy patient 2
TRUE
Latex
GSM343202
Latex allergy patient 3
TRUE
Latex
GSM343203
Latex allergy patient 4
TRUE
Latex
GSM343204
Latex allergy patient 5
TRUE
Latex
GSM343205
Latex allergy patient 6
TRUE
Latex
GSM343206
Latex-fruit allergic patient 1
TRUE
Latex-fruit
GSM343207
Latex-fruit allergic patient 2
TRUE
Latex-fruit
GSM343208
Latex-fruit allergic patient 3
TRUE
Latex-fruit
GSM343209
Latex-fruit allergic patient 4
TRUE
Latex-fruit
GSM343210
Latex-fruit allergic patient 6
TRUE
Latex-fruit
GSM343211
Latex-fruit allergic patient 5
TRUE
Latex-fruit

Group Sets View in Gene Expression Browser

Name  
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Module Analysis

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Allergy type
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