Measurement of Bone Calcium and Phosphorus in Growing Rats By X-ray Fluorescence Analysis

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概要

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• The mineral contents in the growing rat bones are well known to change quantitatively depending on many factors. The object of this experiment was to study the effect of growth on changes in the calcium and phosphorus contents in the bone. In this study we used 4 week-old female rats fed on a normal diet continuously throughout the experiment. The mandibles and femurs were extracted at 4 weeks, 6 weeks and 8 weeks of age. The bones were fixed in a 10% formalin solution, washed with distilled water, and air-dried. Bone contents were determined at the following sites : The head of the mandible (mandible I), the region including the teeth anterior to a line perpendicular to the tangential line drawn at the inferior margin of mandible (mandible II) and the head of the femur (femur). The bone sample was pulverized and the resulting powder was shaped in a ring under pressure. The calcium and phosphorus contents in the samples were then analyzed quantitatively using an X-ray fluorescent analyzer (ZSX101e Rigaku Industry). The calcium and phosphorus contents in mandible I did not increase with growth. The contents in mandible II and femur tended to increase with growth. ZSX101e is widely used for quantitative analysis of food and mineral contents. The results of the present study showed similar tendencies to those analyzed by the traditional and widely used DXA method. Our findings showed that the analyzer is useful for quantitative determination of bone contents. Mandible I showed no increase as the rats aged, probably because growth of the mandible head begins later than age 8 weeks in these rats. We shall further examine the changes in contents in bone over time in a larger number of animals for a longer period of time.

• 硬組織再生生物学会の論文

著者

• KONO Koichi

  Department of Hypertension and Cardiorenal Medicine, Dokkyo Medical University

• Kono Koichi

  大阪医科大学 衛生学･公衆衛生学

• TANAKA Yoshihito

  Department of Biochemistry, Osaka Dental University

• Tanaka Yoshihito

  Department Of Oral Surgery Osaka Medical College

• Usuda Kan

  Department Of Hygiene And Public Health Osaka Medical College

• Usuda Kan

  Department Of Hygiene & Public Health Osaka Medical College

• Dote Tomotaro

  Dep. Of Hygiene And Public Health Osaka Medical Coll.

• Dote Tomotaro

  Department Of Hygiene And Public Health Osaka Medical College

• SHIMAHARA Masashi

  Department of Dentistry and Oral Surgery, Division of Surgery 2, Osaka Medical College

• SHIMIZU Hiroyasu

  Department of Electronic Engineering, Faculty of Engineering, Nagoya University

• Tanaka Yoshihito

  Department Of Biochemistry Osaka Dental University

• Hashiguchi Norihiro

  Department of Oral Surgery, Osaka Medical College

• Nagisa Noriko

  Department of Oral Surgery, Osaka Medical College

• Tanimoto Yoshimi

  Department Of Hygiene & Public Health Osaka Medical College

• Nagisa Noriko

  Division Of Medicine For Function And Morphology Of Sensory Organs Department Of Dentistry And Oral

• Dote Tomotaro

  Department Of Hygiene And Public Health I・ii Osaka Medical College

• Kono Koichi

  Department Of Hygiene And Public Health I・ii Osaka Medical College

• Kono Koichi

  こうの こういち

• Usuda Kan

  Division Of Preventive And Social Medicine Department Of Hygiene And Public Health Osaka Medical Col

• Shimizu Hiroyasu

  Division Of Preventive And Social Medicine Department Of Hygiene And Public Health Osaka Medical Col

• Shimizu Hiroyasu

  Department Of Electrical Engineering Faculty Of Engineering Gifu University:the Institute Of Optics

• Shimahara Masashi

  Division Of Medicine For Function And Morphology Of Sensory Organs Department Of Dentistry And Oral

• Shimahara Masashi

  Department Of Dentistry And Oral Surgery Division Of Surgery 2 Osaka Medical College

• Hashiguchi Norihiro

  Division Of Medicine For Function And Morphology Of Sensory Organs Department Of Dentistry And Oral

• Tanino Yoshitsugu

  Kansai Vocational College Of Medicine Department Of Physical Therapy

• Hashiguchi Norihiro

  Dept. Of Oral Surgery Osaka Medical College

• Usuda Kan

  Osaka Medical Coll. Osaka Jpn

• Usuda Kan

  Department Of Hygiene And Public Health Division Of Preventive And Social Medicine Osaka Medical Col

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