What question did this study set out to answer?

To evaluate the effects of inhaled prostaglandin F(2)alpha, histamine, and prostaglandin E(2) on airway conductance in asthmatic patients compared to healthy individuals.

January 27, 1973BMJOpen Access

Bronchial Hyperreactivity to Prostaglandin F2α and Histamine in Patients with Asthma

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Authors

AMAleksander A. MathéBen-Gurion University of the Negev PHPer HedqvistBoston University AHA. HolmgrenArt Research Centre of the Slovak Academy of Sciences

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Implication

Comparative study reveals marked airway hyperreactivity to prostaglandin F2alpha in asthma patients, suggesting a key pathogenic role for locally formed prostaglandins.

Key Points

To evaluate the effects of inhaled prostaglandin F(2)alpha, histamine, and prostaglandin E(2) on airway conductance in asthmatic patients compared to healthy individuals.
Administered aerosolized prostaglandin F2α (PGF2α), histamine, and prostaglandin E2 (PGE2) to 10 patients with spirometrically reversible bronchial asthma and 10 healthy control subjects.
Measured changes in airway conductance and compared the sensitivity and dose ratios required to induce bronchoconstriction between both groups.
Asthmatic patients exhibited approximately 8,000-fold higher sensitivity to PGF2α than healthy controls, with PGF2α provoking prolonged reductions in airway conductance resembling allergen-induced attacks.
Patients demonstrated less than a 10-fold increase in histamine sensitivity, shifting the histamine:PGF2α dose ratio needed for a 50% decrease in conductance from 2.6:1 in controls to 2,400:1 in asthmatics.
Inhaled PGE2 consistently increased airway conductance in controls but showed variable, occasionally bronchoconstrictive effects in patients, failing to counteract PGF2α-induced bronchoconstriction even at 100-fold doses.

Cite This Study

Mathé et al. (1973) studied this question.

synapsesocial.com/papers/6a83f93ea0245b7cafe66094 https://doi.org/10.1136/bmj.1.5847.193

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Implication

Comparative study reveals marked airway hyperreactivity to prostaglandin F2alpha in asthma patients, suggesting a key pathogenic role for locally formed prostaglandins.

Bronchial Hyperreactivity to Prostaglandin F2α and Histamine in Patients with Asthma

Discussion

Member takes

Implication

Key Points

Cite This Study

Bronchial Hyperreactivity to Prostaglandin F2α and Histamine in Patients with Asthma

Discussion

Member takes

Implication

Key Points

Cite This Study

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