Calcified Tissue Research最新文献_第6页

Tetracycline double-labeling of iliac trabecular bone in 41 normal adults. 四环素双标记41例正常成人髂小梁骨。

Calcified Tissue Research Pub Date : 1978-12-08 DOI: 10.1007/BF02013242

F Melsen, L Mosekilde

{"title":"Tetracycline double-labeling of iliac trabecular bone in 41 normal adults.","authors":"F Melsen, L Mosekilde","doi":"10.1007/BF02013242","DOIUrl":"https://doi.org/10.1007/BF02013242","url":null,"abstract":"A histomorphometric evaluation of the iliac crest trabecular bone remodeling was performed after tetracycline double-labeling in 41 normal Danes (12 males and 29 females) aged 19 to 56 years. The fraction of formative (osteoid covered) and resorptive surfaces was unrelated to age but higher in males than in females (P less than 0.02 and P less than 0.05, respectively). The appositional rate (0.65 +/- 0.12 micrometer/day) was unrelated to age and sex, whereas the fractional labeled surfaces were higher (P less than 0.01) in the males (0.18 +/- 0.08 micrometer2/micrometer2) than in the females (0.12 +/- 0.05 micrometer2/micrometer2), and among the females inversely related to age (R = -0.38, P less than 0.05). The bone formation rate at BMU level (0.50 +/- 0.20 micrometer3/micrometer2/day) was unrelated to sex, but among the females inversely related to age R = -0.49, P less than 0.01). The bone formation rate at tissue level was higher (P less than 0.02) in the males (0.13 +/- 0.07 micrometer3/micrometer2/day) than in the females (0.07 +/- 0.03 micrometer3/micrometer2/day) and among the females inversely correlated to age (R = -0.43, P less than 0.05). the age- and sex-dependent variations in the dynamic parameters underline the importance of a more elaborated normal material.","PeriodicalId":9389,"journal":{"name":"Calcified Tissue Research","volume":"26 2","pages":"99-102"},"PeriodicalIF":0.0,"publicationDate":"1978-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02013242","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11938884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 63

Effects produced by the administration of high doses of 1,25-dihydroxycholecalciferol to the chick embryo. 高剂量1,25-二羟基胆骨化醇对鸡胚的影响。

Calcified Tissue Research Pub Date : 1978-12-08 DOI: 10.1007/BF02013262

R Narbaitz, S Tolnai

引用次数: 8

Ultrastructure, histology, and innervation of the mantle edge of the freshwater pulmonate snails Lymnaea stagnalis and Biomphalaria pfeifferi. 淡水肺泡蜗牛的壳缘超微结构、组织学和神经支配。

Calcified Tissue Research Pub Date : 1978-12-08 DOI: 10.1007/BF02013270

U Zylstra, H H Boer, T Sminia

引用次数: 11

Inhibition of parathyroid hormone-induced fetal rat bone resorption in vitro by nerve growth factor. 神经生长因子对甲状旁腺激素诱导的胎鼠骨吸收的体外抑制作用。

Calcified Tissue Research Pub Date : 1978-12-08 DOI: 10.1007/BF02013259

S L Teitelbaum, R Y Andres, N E Cooke, T J Hahn, A J Kahn

引用次数: 0

Effect of mithramycin on bone beta-glucuronidase and resorption. 米霉素对骨-葡糖苷酶及骨吸收的影响。

Calcified Tissue Research Pub Date : 1978-12-08 DOI: 10.1007/BF02013260

D T Kiang

引用次数: 2

A proposed cellular mechanism for calcium transport in the intestinal epithelial cell. 肠上皮细胞钙转运的细胞机制。

Calcified Tissue Research Pub Date : 1978-11-10 DOI: 10.1007/BF02013237

E J Weringer, S B Oldham, J E Bethune

{"title":"A proposed cellular mechanism for calcium transport in the intestinal epithelial cell.","authors":"E J Weringer, S B Oldham, J E Bethune","doi":"10.1007/BF02013237","DOIUrl":"https://doi.org/10.1007/BF02013237","url":null,"abstract":"Intracellular transport of calcium from the apical to the basal-lateral region of the intestinal epithelial cell was investigated in duodenum from normal fed, fasted, and calcium-loaded rats. The process was followed with time using electron microscopy with potassium pyroantimonate to precipitate calcium. The observations made were subjected to morphometric analysis. The specificity of the method was demonstrated in the villus cell by resistance to microincineration and by absence of deposits following exposure to EGTA. Using this method calcium was seen in cells from calcium-fed rats at the microvillus border, in the Golgi zone, and within the internal compartments of the mitochondria. In cells from fasted rats calcium was not seen. Mitochondria were found largely at the apex of the cell and were free of detectable calcium. By 5 min, in the cells of fasted rats given a calcium load, the calcium had reached the Golgi apparatus and the inner mitochondrial compartment. After 15 min mitochondria were heavily loaded with calcium and had moved to the basal region of the cell. These observations suggest that mitochondria play an important role in absorption of calcium and appear to transport this ion from the apex to the basal region of the cell where entry into the capillaries takes place.","PeriodicalId":9389,"journal":{"name":"Calcified Tissue Research","volume":"26 1","pages":"71-9"},"PeriodicalIF":0.0,"publicationDate":"1978-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF02013237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11576524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A comparison of Ca2+-, Mg2+-ATPase and alkaline phosphatase activities of rat incisor pulp. 大鼠切牙牙髓Ca2+-、Mg2+- atp酶和碱性磷酸酶活性的比较。

Calcified Tissue Research Pub Date : 1978-11-10 DOI: 10.1007/BF02013231

M K Guo, H H Messer

引用次数: 5

Effects of vitamin D3 metabolites on bone cell calcium transport. 维生素D3代谢物对骨细胞钙转运的影响。

Calcified Tissue Research Pub Date : 1978-11-10 DOI: 10.1007/BF02013236

R Dziak

引用次数: 9

Mechanism of osteoclastic bone resorption: a new hypothesis. 破骨细胞骨吸收的机制:一个新的假说。

Calcified Tissue Research Pub Date : 1978-11-10 DOI: 10.1007/BF02013238

J N Heersche