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An unusual platelet function defect: report of 19 cases.
Renu Saxena1, Meenal Gupta, Sunil Gupta
1Department of Haematology, All India Institute of Medical Sciences, New Delhi. renusax@hotmail.com
Indian Journal of Pathology & Microbiology
|March 18, 2004
Summary
This study identifies a hereditary platelet aggregation defect, specifically reduced responsiveness to epinephrine, in 19 Indian patients. This rare bleeding disorder often begins in childhood, presenting with mild symptoms like easy bruising.
Area of Science:
- Hematology
- Platelet Physiology
- Hereditary Bleeding Disorders
Background:
- Platelet aggregation is crucial for hemostasis.
- Impaired platelet response to epinephrine is a rare hereditary condition.
- Previous reports documented this defect in limited cases.
Observation:
- Nineteen Indian patients with hereditary platelet aggregation defect were studied.
- Patients exhibited normal aggregation to ADP, collagen, and arachidonic acid.
- A selective absence of platelet aggregation in response to epinephrine was noted.
Findings:
- Bleeding manifestations began in childhood for 74% of patients (mean age 10.4 years).
- Common symptoms included recurrent ecchymotic spots and menorrhagia in females.
- The study excluded cases with acquired conditions or antiplatelet drug use.
Implications:
- This research highlights a significant cohort of Indian patients with this rare defect.
- Understanding this hereditary condition aids in diagnosing and managing mild bleeding disorders.
- Further research may elucidate the genetic basis and specific molecular mechanisms involved.