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Shayma Mohamed

Publications (2)

Global Variation in Female Pubertal Onset, Progression, and Duration, and Biochemical Thresholds for Diagnosis: A Comparative Review across Continents and Gonadotropin–estradiol Cutoffs

Ashraf Soliman, Fawzia Alyafei, Nada Alaaraj, Noor Hamed, Shayma Mohamed & Nada Soliman · Asian Journal of Research and Reports in Endocrinology · 2026

Background: Female pubertal onset is a complex, multifactorial biological event with substantial global variation. Secular trends show progressive earlier thelarche and menarche across continents, yet biochemical thresholds for diagnosing pubertal onset and central precocious pub...

Open access Research Article 10.9734/ajrre/2026/v9i1132

CYP11A1-derived Non-canonical Secosteroids and Circadian–Endocrine Regulation: A Scoping Review

Ashraf Soliman, Fawzia Alyafei, Nada Alaaraj, Noor Hamed, Ahmed Elawwa, Shayma Mohamed, Noora Alhumaidy, Khalid Siddiq & Mohamed Elkalaf · Asian Journal of Pediatric Research · 2026

Background: Vitamin D is traditionally characterized as a nutrient essential for calcium homeostasis. However, emerging evidence suggests that the cutaneous CYP11A1-driven secosteroid pathway serves as a "chemical proxy" for sunlight, linking environmental UV radiation to the syn...

Open access Research Article 10.9734/ajpr/2026/v16i2522