Laboratory / cell studycited by the Tayebat archiveabstract only checked A-VEG-12 standard review
Melon allergy protein
Profilin is a relevant melon allergen susceptible to pepsin digestion in patients with oral allergy syndrome.
Overview
Rodriguez-Perez R et al.. J Allergy Clin Immunol 2003 · PMID 12642849 · DOI 10.1067/mai.2003.74
Allergic patients react to profilin in melon and related cucurbits; it is quickly digested in the stomach.
Does the study support the specific claim? Partly · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Identify allergens
- How was the study done?
Lab study
- How many people, animals or samples were studied?
21 patients
- What was actually found?
Profilin major allergen
- How large was the observed effect?
71% recognition
- What do the results mean in everyday life?
Only allergic people affected.
- What are the study's limitations?
Small
- What does it say about Elawady's specific claim?
Subgroup only
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot show risk for non-allergic people.
Scientific in-depth review
1. Full reference
- Authors
- Rodriguez-Perez R, Crespo JF, Rodríguez J, Salcedo G
- Journal
- J Allergy Clin Immunol
- Year
- 2003
- Identifier
- PMID 12642849 DOI 10.1067/mai.2003.74
- Verification
- verified – PubMed E-utilities efetch, 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract
2. Research question
Identify melon allergens and their digestibility.
3. Study design and population
- Study design
- Laboratory / cell study – Laboratory allergen characterisation in challenge-confirmed patients
- Population
Patients with melon OAS confirmed by DBPCFC
- Country
Spain (inferred from author affiliation; not stated in abstract)
- Period
Not stated
- Sample size
21 patients
- Inclusion and exclusion criteria
DBPCFC-confirmed melon OAS
4. Methods and endpoints
- Exposure / intervention
Melon, zucchini, cucumber, watermelon extracts
- Comparator
Saliva, simulated gastric fluid
- Endpoints
IgE binding; digestibility
- Statistical methods
Descriptive
5. Actual results
- Results
13-kd profilin recognised by sera of 71% of patients; cross-recognition in zucchini, cucumber, watermelon; stable in saliva, rapidly digested in simulated gastric fluid.
- Absolute risks
not reported
- Authors' conclusion
Profilin is a major melon allergen highly susceptible to pepsin digestion.
6. Strengths
- Challenge-confirmed patients
7. Weaknesses
- Small selected group
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- not assessable
- Rationale
Lab study.
9. Assessment of the statistical interpretation
Not applicable.
10. Relevance to the specific claim
Supports C-VEG-11 (subgroup).
11. Independent contrary findings
Itself (digestibility).
12. Transferability to Germany and Europe
High.
13. Overall methodological judgement
Correct for allergic subgroup.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | not assessable |
| Precision of results | not applicable |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | taken out of context |
14. Open questions
Population prevalence.
15. Linked fact checks
- Cucurbits (melon, watermelon, cucumber, zucchini) carry profilin allergens that cause cross-allergy. – Studies supporting the claim
Use by the Tayebat archive
Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.
- What the archive says about the study
Bibliography + narrative: profilin cross-allergy to melon, watermelon, cucumber, zucchini.
- A. What was actually studied?
Allergen identification.
- B. What did the authors find?
Profilin major allergen; pepsin-labile.
- C. What conclusions do the authors themselves draw?
Explains oral allergy syndrome.
- D. What does the archive derive from it?
Cucurbits harmful for all.
- E. Is this derivation scientifically justified?
Only for sensitised people; pepsin lability explains mild oral symptoms.
- Adequacy of the interpretation (by the archive)
- taken out of context