Changes in serum markers of bone turnover during normal pregnancy

2003 ◽  
Vol 40 (5) ◽  
pp. 508-513 ◽  
Author(s):  
Malveen Kaur ◽  
Ian M Godber ◽  
Nigel Lawson ◽  
Phillip N Baker ◽  
Derek Pearson ◽  
...  
Keyword(s):  
Bone Turnover ◽  
Bone Turnover Markers ◽  
Normal Pregnancy ◽  
Serum Markers ◽  
Blood Samples ◽  
Time Points ◽  
Final Sample ◽  
Markers Of Bone Turnover ◽  
Initial Decrease ◽  
Turnover Markers

Background: Maternal calcium homeostasis adapts during pregnancy to provide for the needs of the growing fetal skeleton. Wide selections of bone turnover markers are currently available to assess the changes taking place; here, data are presented on two serum-based markers. Methods: The use of serum-based biochemical bone turnover markers during pregnancy was assessed in a cohort of 41 women recruited prior to conception. Serum N-terminal extension peptide of procollagen (P1NP) was used to monitor bone formation and serum β-crosslaps (S-CTX) used to assess resorption. Blood samples were measured at five time points from a pre-conceptual baseline, through pregnancy, to the final sample, which was taken within 1 week of delivery. Results: An initial decrease from the baseline in both P1NP and S-CTX was observed at 12 weeks; however, it is suggested that this may be due to the haemodilutional effect of pregnancy rather than a true change in bone turnover. Significant increases from the baseline of both analytes were observed by 36 weeks (P1NP, P = 0.013; S-CTX, P = 0.002), when the calcium demands of the fetus are greatest. Conclusions: This study illustrates the use of serum-based bone turnover markers to assess turnover during normal pregnancy, a time when ionizing radiation cannot be used to assess bone turnover.

The Effect of Yoga on Markers of Bone Turnover in Osteopenic Women: a Pilot Study

2009 ◽  
Vol 19 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Judith Balk ◽  
Melissa Gluck ◽  
Lisa Bernardo ◽  
Janet Catov
Keyword(s):  
Pilot Study ◽  
Bone Turnover ◽  
Postmenopausal Women ◽  
Bone Turnover Markers ◽  
Weight Bearing ◽  
Hatha Yoga ◽  
Yoga Practice ◽  
Beneficial Effects ◽  
Markers Of Bone Turnover ◽  
Turnover Markers

Weight-bearing exercise is recommended to improve bone density. Hatha Yoga is a popular form of weight-bearing exercise that includes physical postures, stretching, breathing, and relaxation. We hypothesized that Hatha Yoga would have beneficial effects on bone turnover markers. We conducted a small feasibility pilot study with a prospective, pre-post design comparing markers of bone turnover before and after Yoga training in sedentary osteopenic postmenopausal women. Markers of bone formation were measured with serum bone-specific alkaline phosphatase (BAP). Measures of bone resorption were measured with urinary type I collagen cross-linked N-telopeptide (uNTX). Seven participants completed a 12-week series of one hour per week Yoga classes, in addition to home Yoga practice. We analyzed the correlation between time spent on Yoga and time spent on other weight-bearing exercise and change in bone turnover markers. The amount of Yoga practice was significantly correlated with BAP levels (r = 0.68, p = 0.09). A weaker, non-significant correlation was found between the amount of Yoga practice and uNTX levels (r = -.54, p = .21). Compared to Yoga, other physical activities were less correlated with BAP and uNTX levels. Yoga may have beneficial effects on bone turnover in osteopenic postmenopausal women.

scholarly journals Effectsof aerobic and resistance trainings on relation between blood biochemical parameters and body compositionwith bone turnover markers in overweight men

2019 ◽  
Author(s):  
M. Rostamizadeh ◽  
A. Elmieh ◽  
F. Rahmani nia
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Bone Turnover ◽  
Bone Turnover Markers ◽  
Biochemical Parameters ◽  
Exercise Group ◽  
Blood Samples ◽  
Blood Biochemical Parameters ◽  
Blood Biochemical ◽  
Turnover Markers

Introdution: The cells rolled in the formation of bone, regulated glucose metabolism, and increased insulin secretion from pancreatic beta cells and modulated the insulin resistance. Therefore, the present study aimed to study the effects of aerobic and resistance exercises on relation between blood biochemical parameters and body composition with bone turnover markers in overweight men. Method: In this quasi-experimental study, a total of 36 overweight, young healthy men (age range28-35 years) were randomly assigned to the control (n=14), aerobic exercise (n=11) and resistance exercise (n=11) groups. In the aerobic exercise group, excercisetraining was performedfor 8weeks, three sessions per week (at 55-85% of HRR), and in the resistance exercise group,exercise training was perfprmed in 8weeks for three sessions per week(at 55-75% of 1RM). Body composition and blood samples were assessed from fasting blood samples before and after the 8-week exercise programme. Data wereanalyzed by t-test and ANOVA by SPSS ver.25 Software. Results: Paired t-test and one-way ANOVA showed that aerobic and resistance training cause the reduction of body composition (P <0.05), increasing the osteocalcin (P = 0.001 and P <0.001) as well as a significant decrease in blood biochemical parameters (P <0.05). Also, Pearson correlation showed that there was no correlation between osteocalcin and blood biochemical parameters and body composition (P <0.05). Conclusion: The results of this study showed that 8 -week exercise trainings increase osteocalcin levels, which is associated with a decrease in body weight and body fat percentage, particularly lipid profiles. However, despite the differences in mean, there was no statistically significant difference between aerobic and resistance training.

scholarly journals Immediate changes in biochemical markers of bone turnover and circulating interleukin-6 after parathyroidectomy for primary hyperparathyroidism

2000 ◽  
pp. 451-459 ◽  
Author(s):  
CY Guo ◽  
PA Holland ◽  
BF Jackson ◽  
RA Hannon ◽  
A Rogers ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Bone Turnover ◽  
Interleukin 6 ◽  
Bone Turnover Markers ◽  
Biochemical Markers ◽  
Time Course ◽  
Serum Levels ◽  
Healthy Controls ◽  
Markers Of Bone Turnover ◽  
Turnover Markers

OBJECTIVE: The time course of the immediate change in bone turnover after parathyroidectomy (PTX) for primary hyperparathyroidism (PHPT) is not clear. It is uncertain whether circulating interleukin-6 (IL-6) plays a role in mediating the acute withdrawal of the effects of parathyroid hormone (PTH) on bone turnover after PTX. The aims of this study were to determine the time course of immediate changes in biochemical markers of bone turnover after PTX and whether circulating IL-6 is involved in the immediate changes of bone turnover after PTX. DESIGN AND METHODS: IL-6 and bone turnover markers were measured in eight women (aged 55+/-11 years, mean+/-s.d. ) with PHTP at baseline and at 1-2h, and 1, 2, 5, 7 and 12 days after PTX. We compared the results with those from eight individually matched women (healthy controls) and five subjects undergoing major surgery (surgical controls). RESULTS: At baseline, serum levels of IL-6 and bone turnover markers were higher in PHPT than those in healthy controls (P<0.05). Serum levels of procollagen propeptides increased by 22 and 27% at days 2 and 5, respectively, compared with baseline (P<0.05). Serum tartrate-resistant acid phosphatase decreased by 2 days after PTX, and urinary collagen crosslinks decreased significantly by 21-41% within 24h (P<0.05). Serum IL-6 levels increased immediately in both PHPT and surgical controls at postoperative follow-up (repeated measures ANOVA). CONCLUSIONS: (1) PTX decreases bone resorption immediately and (2) circulating IL-6 is not involved in the changes in bone turnover immediately after PTX.

scholarly journals Effects of oligofructose-enriched inulin on intestinal absorption of calcium and magnesium and bone turnover markers in postmenopausal women

2007 ◽  
Vol 97 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Leah Holloway ◽  
Sharon Moynihan ◽  
Steven A. Abrams ◽  
Kyla Kent ◽  
Andrew R. Hsu ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Loss ◽  
Bone Turnover ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Bone Turnover Markers ◽  
Spine Bone Mineral Density ◽  
Mineral Density ◽  
Markers Of Bone Turnover ◽  
Turnover Markers

Deficiency of oestrogen at menopause decreases intestinal Ca absorption, contributing to a negative Ca balance and bone loss. Mg deficiency has also been associated with bone loss. The purpose of the present investigation was to test the hypothesis that treatment with a spray-dried mixture of chicory oligofructose and long-chain inulin (Synergy1; SYN1) would increase the absorption of both Ca and Mg and alter markers of bone turnover. Fifteen postmenopausal women (72·2 (sd6·4) years) were treated with SYN1 or placebo for 6 weeks using a double-blind, placebo-controlled, cross-over design. Fractional Ca and Mg absorption were measured using dual-tracer stable isotopes before and after treatment. Bone turnover markers were measured at baseline, 3 and 6 weeks. Fractional absorption of Ca and Mg increased following SYN1 compared with placebo (P < 0·05). Bone resorption (by urinary deoxypyridinoline cross-links) was greater than baseline at 6 weeks of active treatment (P < 0·05). Bone formation (by serum osteocalcin) showed an upward trend at 3 weeks and an increase following 6 weeks of SYN1 (P < 0·05). Closer examination revealed a variation in response, with two-thirds of the subjects showing increased absorption with SYN1.Post hocanalyses demonstrated that positive responders had significantly lower lumbar spine bone mineral density than non-responders (dual X-ray absorptiometry 0·887 ± 0·102v.1·104 ± 0·121 g/cm2;P < 0·01), and changes in bone turnover markers occurred only in responders. These results suggest that 6 weeks of SYN1 can improve mineral absorption and impact markers of bone turnover in postmenopausal women. Further research is needed to determine why a greater response was found in women with lower initial spine bone mineral density.

scholarly journals Use of Bone Turnover Markers in Clinical Osteoporosis Assessment in Women: Current Issues and Future Options

2011 ◽  
Vol 7 (6) ◽  
pp. 689-698 ◽  
Author(s):  
K Henriksen ◽  
DJ Leeming ◽  
C Christiansen ◽  
MA Karsdal
Keyword(s):  
High Risk ◽  
Bone Turnover ◽  
Bone Quality ◽  
Bone Turnover Markers ◽  
Biochemical Markers ◽  
Metabolic Diseases ◽  
Mineral Density ◽  
Dual Emission ◽  
Markers Of Bone Turnover ◽  
Turnover Markers

Monitoring bone turnover of the adult and aging skeleton is essential for optimal treatment of bone metabolic diseases, such as postmenopausal osteoporosis. Diagnosis of osteoporosis is based solely on dual-emission x-ray absorptiometry-based measurements of bone mineral density. However, within the last 20 years, biochemical markers of bone turnover have been implemented to a larger degree, and especially within the field of drug development. Numerous clinical studies have underscored that the markers have promise in terms of predicting patients at high risk of losing bone, future fracture events and importantly also the fracture efficacy of drugs in development. Furthermore, while classical methods often require years to monitor the changes, the bone turnover markers do so within a shorter time span. The aims of this article are to provide an update on the different biochemical markers of bone turnover, and to give an overview of their applications in epidemiological and clinical research especially in women. The main emphasis will be on their utility in clinical trials testing the efficacy of drugs for the treatment of osteoporosis, and their ability to supplement bone mass measurements. Finally, recent evidence suggests that biochemical markers may provide information on bone age that may indirectly relate to bone quality, and this is discussed together with future possibilities for measuring bone quality using bone turnover markers. In summary, a more targeted use of biomarkers could assist in the identification of high-risk patients, the process of drug discovery and monitoring of the efficacy of osteoporosis treatment in clinical settings.

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