HOSHINO Junichi
   Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine
   Position   Professor and Division head
Article types Case report
Language English
Peer review Peer reviewed
Title A Bone Histomorphometric Analysis of Hypophosphatasia-related Osteoporosis after Teriparatide Treatment.
Journal Formal name:Internal medicine (Tokyo, Japan)
Abbreviation:Intern Med
ISSN code:13497235/09182918
Volume, Issue, Page 62(1),pp.75-79
Author and coauthor Mizuno Hiroki, Sawa Naoki, Sekine Akinari, Inoue Noriko, Oba Yuki, Ikuma Daisuke, Yamanouchi Masayuki, Hasegawa Eiko, Suwabe Tatsuya, Suzuki Hisanori, Hoshino Junichi, Ubara Yoshifumi
Publication date 2023/01/01
Summary A 79-year-old man was admitted with a compression fracture of the first lumbar vertebra. His alkaline phosphatase (ALP) level was 35 IU/L, and his dual energy X-ray absorptiometry T score was -3.7 standard deviations, indicating osteoporosis. A genetic analysis showed a mutation of the alkaline phosphatase biomineralization-associated gene encoding tissue-nonspecific alkaline phosphatase. Hypophosphatasia-related osteoporosis was diagnosed. Alendronate, teriparatide, and minodronate were administered in that order. The ALP level increased during teriparatide use. A bone biopsy performed after three years of teriparatide treatment showed that cancellous bone was adynamic. In cortical bone, tetracycline double-labeling indicates enhanced bone formation. Teriparatide may thus be a viable treatment option even in patients with hypophosphatasia.
DOI 10.2169/internalmedicine.9624-22
PMID 35650135