RNA extraction, cDNA conversion, and qPCR RNA from 21NT, BT474, IBR.3, and HMEC was extracted, and mRNA gene expression analysis was performed (primers listed in Table 1) using qPCR as described previously (Al-dulaimi et al 2024)
very high doses might increase side effect risks without extra benefit

Digestive Symptoms In a 2-week study in 14 people with histamine intolerance and symptoms that included abdominal pain, bloating, or diarrhea, 93% of participants reported a resolution of at least one digestive symptom after taking 4.2 mg of DAO twice daily ( Migraine Attacks and Headaches A 1-month study in 100 people with previously diagnosed DAO deficiency observed that participants who supplemented daily with DAO experienced a 23% reduction in the duration of migraine attacks, compared to the placebo group ( Skin Rash A 30-day study in 20 people with chronic spontaneous urticaria (skin rash) and DAO deficiency noted that participants who received the supplement twice daily experienced significant relief in symptoms and required less antihistamine medication ( Although these studies suggest that supplementing with DAO may eliminate or improve symptoms of deficiency, theres no guarantee that its effective for everyone

345 These techniques can assess changes in tissue composition, collagen alignment, and muscle function, providing detailed information to guide rehabilitation adjustments