title: [The relation between bone calcium metabolism and senile aortic valve calcification].
abstract: The authors assessed the affect of bone calcium metabolism on aortic valve calcification (AVC) in 189 septua- and octogenarians (49 males and 140 females, 81.0 +/- 4.4 yrs). Both AVC and mitral annular calcification (MAC) were evaluated by two-dimensional echocardiography, and then the degree of AVC was classified into three categories; C-1: calcification seen in one cusp of the aortic valve, C-2: calcification in two cusps, and C-3: calcification in three cusps. Bone mineral content (BMC) of three lumbar vertebral bodies was obtained by quantitative computed tomography using a calibrated phantom. Serum calcium, phosphate, parathyroid hormone, calcitonin, and osteocalcin were also examined within a month. The patients were classified into age-matched five groups in both sexes; Group-C: MAC (-) and AVC (-) (n = 79); Group-A1: MAC (-) and AVC (+) with C-1 (n = 35); Group-A2: MAC (-) and AVC (+) with C-2 (n = 19); Group-A3: MAC (-) and AVC (+) with C-3 (n = 15); and Group-AM: MAC (+) and AVC (+) in any cusp (n = 42). In males, BMC decreased in the order of Groups-A3 (83 +/- 27 mg/cm3), -C (67 +/- 50), -AM (62 +/- 62), -A2 (61 +/- 38), and -A1 (59 +/- 58), but there was no significant difference between any of the five groups. In females, the BMC in Group-AM (29 +/- 24) was significantly less than that in Group-C (48 +/- 35) (p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Second Department of Internal Medicine, University of Yamaguchi.
authors.forename: N
authors.initials: N
authors.lastname: Sugihara
authors.forename: M
authors.initials: M
authors.lastname: Matsuzaki
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve; D015519:Bone Density; D001842:Bone and Bones / Q000378:metabolism*; D002114:Calcinosis / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D005260:Female; D006349:Heart Valve Diseases / Q000378:metabolism; D006801:Humans; D008297:Male
chemical_list: D002118:Calcium