Nitrogen metabolism and bone metabolism markers in healthy adults during 16 weeks of bed rest

Clinical Chemistry

Volumn 47, Issue 9, 2001, Pages 1688-1695

  Scheld, K ^a   Zittermann, A ^a   Heer, M ^a   Herzog, B ^a   Mika, C ^a   Drummer, C ^a   Stehle, P ^a  

^a UNIVERSITY OF BONN   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

AMINO TERMINAL TELOPEPTIDE; CALCITRIOL; CALCIUM; COLLAGEN TYPE 1; NITROGEN; OSTEOCALCIN; PARATHYROID HORMONE; PEPTIDE; PHOSPHORUS; PROCOLLAGEN; UNCLASSIFIED DRUG;

ADULT; ARTICLE; BED REST; BONE METABOLISM; CALCIUM EXCRETION; COLLAGEN SYNTHESIS; CORRELATION FUNCTION; DISEASE ASSOCIATION; HUMAN; IMMOBILIZATION; MALE; NITROGEN BALANCE; NITROGEN METABOLISM; NITROGEN URINE LEVEL; NORMAL HUMAN; OSSIFICATION;

EID: 0034871958     PISSN: 00099147     EISSN: None     Source Type: Journal    
DOI: 10.1093/clinchem/47.9.1688     Document Type: Article

References (47)

1. Relation between bone mass and muscle weight
2. Gender-related differences in the relationship between densitometric values of whole-body bone mineral content and lean body mass in humans between 2 and 87 years of age
3. Correlations between skeletal muscle mass and bone mass in children 6-18 years: Influences of sex, ethnicity, and pubertal status
4. Estrogen and bone-muscle strength and mass relationships
5. Regional changes in muscle mass following 17 weeks of bed rest
6. Bone mineral loss and recovery after 17 weeks of bed rest
7. Modifications of bone and connective tissue after orthostatic bedrest
8. Clinical use of biochemical markers of bone remodeling: Current status and future directions
9. Osteoclasts generate cross-linked collagen N-telopeptides (NTx) but not free pyridinolines when cultured on human bone
10. Human skeletal muscle protein breakdown during spaceflight
11. Space flight is associated with rapid decreases of undercarboxylated osteocalcin and increases of markers of bone resorption without changes in their circadian variation: Observations in two cosmonauts
12. Correlation of estradiol, parathyroid hormone, interleukin-6, and soluble interleukin-6 receptor during the normal menstrual cycle
13. Appraisal of four pre-column derivatization methods for the high-performance liquid chromatographic determination of free amino acids in biological materials
14. An ultra rapid and sensitive high-performance liquid chromatographic method for determination of tissue and plasma free amino acids
15. The use of reverse-phase high-performance liquid chromatography and precolumn derivatization with dansyl chloride for quantitation of specific amino acids in collagen and elastin
16. Assessment of an automated chemiluminiescence nitrogen analyzer for routine use in clinical nutrition
17. Validity of impedance predictions at various levels of fatness
18. Exercise-trained young men have higher calcium absorption rates and plasma calcitriol levels compared with age-matched sedentary controls
19. Determination of intestinal strontium absorption-assessment and validation of routinely manageable test procedures
20. A calcium-infusion test
21. Simple test of intestinal calcium absorption measured by stable strontium
22. Changes in musculoskeletal structure and function with prolonged bed rest
23. Prolonged bed rest decreases skeletal muscle and whole body protein synthesis
24. Removal of infused amino acids by splanchnic and leg tissue in humans
25. Calcium absorption, endogenous excretion, and endocrine changes during and after long-term bed rest
26. Changes in markers of bone formation and resorption in a bed rest model of weightlessness
27. Circadian and circatrigintan changes in osteoblastic activity assessed by serum osteocalcin. Physiological and methodological aspects
28. Clinical validation of a new immunoradiometric assay for intact human osteocalcin
29. Relationship of cell growth to the regulation of tissue-specific gene expression during osteoblast differentiation
30. Effects of 1-week head-down tilt bed rest on bone formation and the calcium endocrine system
31. Skeletal responses to spaceflight
32. Altered skeletal pattern of gene expression in response to spaceflight and hindlimb elevation
33. Weight gain reverses bone turnover and restores circadian variation of bone resorption in anorexic patients
34. Refeeding improves muscle performance without normalization of muscle mass and oxygen consumption in anorexia nervosa patients
35. 2 in human osteosarcoma cell line MG-63
36. Growth factors in critical illness: Regulation and therapeutic aspects
37. Skeletal unloading induces resistance to insulin-like growth factor I
38. The activity of GH/IGF-I axis in anorexia nervosa and in obesity: A comparison with normal subjects and patients with hypopituitarism or critical illness
39. Urinary N-telopeptide levels discriminate normal, osteopenic, and osteoporotic bone mineral density
40. Collagen cross-link excretion during space flight and bed rest
41. The biosynthesis of collagen and its disorders (first of two parts)
42. Procollagen type I carboxy-terminal extension peptide in serum as a marker of collagen biosynthesis in bone. Correlation with Iliac bone formation rates and comparison with total alkaline phosphatase
43. Loss of bone density and lean body mass after hip fracture
44. Effect of testosterone on muscle mass and muscle protein synthesis
45. Sublingual testosterone replacement improves muscle mass and strength, decreases bone resorption, and increases bone formation markers in hypogonadal men - A clinical research center study
46. Seasonal variations in vitamin D status and calcium absorption do not influence bone turnover in young women