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1.
Waist Circumference is Useless to Assess the Prevalence of Metabolic Abnormalities in Severely Obese Women 总被引:1,自引:1,他引:0
Drapeau V Lemieux I Richard D Bergeron J Tremblay A Biron S Marceau P Mauriège P 《Obesity surgery》2007,17(7):905-909
BACKGROUND: The present retrospective study aims to provide additional evidence supporting the fact that waist circumference, in severe obesity, is not a good clinical marker to identify individuals with the metabolic syndrome or an altered metabolic profile. METHODS: Relationships between waist circumference and metabolic profile of pre- (n=165) and postmenopausal (n=43) severely obese women were compared to associations observed in pre- (n=52) and postmenopausal (n=35) moderately obese women. RESULTS: Results showed that abdominal obesity assessed by waist circumference was more highly correlated with fasting glycemia, HDL-cholesterol and the cholesterol/HDL-cholesterol ratio in moderately than in severely obese women, before menopause. After menopause, waist circumference was not a valuable predictor of metabolic abnormalities in both groups. Moreover, when waist circumference was included as a criterion of the metabolic syndrome (as defined by the NCEP ATP III guidelines) in severely obese women, the prevalence of this metabolic condition was over-estimated by 72%. CONCLUSION: These results emphasize the uselessness of waist circumference to assess the prevalence of the metabolic syndrome or an altered metabolic profile in severely obese women. 相似文献
2.
L. L. Subak C. Johnson C. Johnson E. Whitcomb D. Boban J. Saxton J. S. Brown 《International urogynecology journal》2002,13(1):40-43
The aim of this study was to evaluate the effect of weight reduction on urinary incontinence in moderately obese women. This
prospective cohort study enrolled moderately obese women experiencing four or more incontinence episodes per week. BMI and
a 7-day urinary diary were collected at baseline and on the completion of weight reduction. The study included 10 women with
a mean (tSD) baseline BMI of 38.3 (t10.1) kg/m2 and 13 (t10) incontinent episodes per week. Participants had a mean BMI reduction of 5.3 (t6.2) kg/m2 (P<0.03). Among women achieving a weight loss of ≥5%, 6/6 had ≥50% reduction in incontinence frequency compared to 1 in 4 women
with <5% weight loss (P<0.03). Incontinence episodes decreased to 8 (t10) per week following weight reduction (P<0.07). The study demonstrated an association between weight reduction and improved urinary incontinence. Weight reduction
should be considered for moderately obese women as part of non-surgical therapy for incontinence. 相似文献
3.
Caspar-Bauguil S Fioroni A Galinier A Allenbach S Pujol MC Salvayre R Cartier A Lemieux I Richard D Biron S Marceau P Casteilla L Pénicaud L Mauriège P 《Obesity surgery》2012,22(6):935-944
Background
Fatty acids (FAs) and adipokines such as adiponectin or interleukin-6 (IL-6) are known to modulate inflammation and the development of metabolic syndrome. Whether FA composition assessed in plasma triacylglycerols (TAGs), phospholipids (PLs) and non-esterified fatty acids (NEFAs) and adipose tissue (AT) PLs differed between dysmetabolic and non-dysmetabolic severely obese women remains to be established. Whether the plasma and/or AT arachidonic acid (AA)/eicosapentaenoic acid (EPA) ratio in the PL sub-fraction may be associated with adipokine AT gene expression needs to be examined.Methods
FA composition was measured in plasma lipid classes and in the TAG and PL sub-fractions of subcutaneous abdominal and omental ATs of severely obese women paired for age and adiposity but showing a dysmetabolic profile (n?=?13) or not (n?=?14). FA profile was assessed by gas chromatography. Plasma and AT mRNA concentrations of adiponectin and IL-6 were measured by ELISA and real-time polymerase chain reaction, respectively.Results
Plasma adiponectin and FA concentrations in the NEFA sub-fraction were, respectively, lower and higher in dysmetabolic than in non-dysmetabolic women (p?0.05). Despite similar FA levels in the PL sub-fraction, the AA/EPA ratio was higher in plasma and ATs (p?0.005), because of an EPA decrease in plasma and subcutaneous abdominal fat vs. an AA increase in the omental depot. The AA/EPA ratio was negatively associated with adiponectin concentrations in plasma and subcutaneous abdominal AT (0.01?p?0.05).Conclusions
Metabolic dysfunction is associated with a pro-inflammatory phospholipid AA/EPA ratio in plasma and ATs, and an altered adiponectin secretion that could contribute to developing metabolic syndrome. 相似文献4.
Metabolic syndrome (MetS) is classified as a combination of risk factors for cardiovascular disease (CVD), and postmenopausal women are specifically at an increased risk for MetS, in part due to the hormonal and metabolic changes that occur at the menopause transition. It is crucial to combat the components of MetS with appropriate lifestyle interventions in this population, such as exercise. This study aimed to examine the effects of a resistance band exercise training program in obese postmenopausal women with MetS. A total 35 postmenopausal women were randomly assigned to either a control group (CON, n = 17) or a resistance band exercise training group (EX, n = 18). Participants in the EX group trained 3days/week. Levels of blood glucose, insulin, homeostatic model of insulin resistance (HOMA-IR), blood lipid profile, anthropometrics, and blood pressure (BP) were measured at baseline and after the exercise intervention. There were significant group by time interactions (p < 0.05) for blood glucose (Δ-4.5 mg/dl), insulin (Δ -1.3 μU/ml), HOMA-IR (Δ -0.6), triglycerides (Δ -9.4 mg/dl), low-density lipoprotein cholesterol(Δ -10.8 mg/dl), systolic BP(Δ -3.4 mmHg), body fat percentage (Δ -3.0 %), and waist circumference (Δ -3.4 cm), which significantly decreased (p < 0.05), and lean body mass (Δ 0.7 kg) and high-density lipoprotein cholesterol (Δ 5.1 mg/dl), which significantly increased (p < 0.05) after EX compared to no change in CON. The present study indicates that resistance band exercise training may be an effective therapeutic intervention to combat the components of MetS in this population, potentially reducing the risk for the development of CVD.Key points
- There are findings in the study that support the use of resistance band exercise for reducing risks for MetS in this population.
- There were significant improvements in insulin, glucose, HOMA-IR, and blood lipid profiles following the exercise training program.
- Body mass, BMI, BF%, SBP, and waist circumference were significantly decreased, while LBM significantly increased after 12 weeks of exercise training program.
- This is the first study to evaluate the impact of resistance band exercise training on risk factors for MetS in obese postmenopausal women.
5.
Lateral Spine Densitometry in Obese Women 总被引:3,自引:0,他引:3
E. R. Brooks D. Heltz P. Wozniak C. Partington J. C. Lovejoy 《Calcified tissue international》1998,63(2):173-176
The lateral (LAT) spine scan has been suggested as a more sensitive measure than posterior-anterior (PA) scanning for assessing
age-related bone loss in normal-weight postmenopausal women. The measurement error of PA and LAT bone mineral density (BMD)
using dual energy X-ray absorptiometry (DXA) has also been shown to rise with incremental increases in fat and from large
variance in fat thickness, respectively. The purpose of this cross-sectional study was to determine specific affects of obesity
on paired PA and LAT lumbar (L2–L4) BMD and Z score (BMD of patient versus age-matched reference database) correlation in 30 obese postmenopausal women (mean
BMI ± SD = 33.3 ± 4.06). The mean PA and LAT BMD ± SD were 0.946 ± 0.123 and 0.749 ± 0.134, respectively. The mean PA and
LAT Z scores were −0.17 ± 1.15 and 0.80 ± 1.7. The correlation between PA and LAT BMD was significantly lower (r = 0.55; P < 0.05) than previously reported, and PA and LAT Z score correlation was (r = 0.57; P= 0.0016). After adjusting for body mass index (BMI), percent body fat, fat mass, and truncal fat by DXA, waist:hip ratio
(WHR) and visceral and subcutaneous abdominal fat by computerized axial tomography (CT), PA and LAT Z score correlation increased
to r = 0.62; P= 0.0065. In our subjects, the mean LAT Z score was 4.6 times higher than the mean AP Z, contrary to previous observations
in normal-weight postmenopausal women. Our findings may be due to increased soft tissue composition and fat inhomogeneity
in the LAT scanning field resulting in increased X-ray attenuation in obesity.
Received: 22 July 1997 / Accepted: 26 January 1998 相似文献
6.
This cross-sectional study aims to assess the effectiveness of a simple, noninvasive scoring system, the Osteoporosis Self-Assessment
Tool for Asians (OSTA), and quantitative bone ultrasound (QUS) in assessing nonvertebral fracture risk in Chinese postmenopausal
women. A group of 513 community-dwelling women including 271 postmenopausal individuals participated in this study. Speed
of sound (SOS m/s) at the radius, phalanx, and tibia were assessed by using the Omnisense prototype (Sunlight Ltd., Israel).
Body height and weight were measured, and body mass index (BMI) and OSTA indices were calculated. Self-reported fractures
were identified using a structured questionnaire. Phalanx SOS was significantly lower among postmenopausal women with a history
of nonvertebral fracture occurred after menopause than those without (3755 m/s vs. 3841 m/s, P = 0.017, adjusted for age and weight), with an AUC of 0.66. The AUC of the OSTA for predicting nonvertebral fracture occurred
after menopause was 0.64. SOS at the radius, phalanx, and tibia showed a positive correlation with OSTA index (r = 0.376–0.401, P < 0.001). The prevalence of nonvertebral fractures also increased significantly with the decreasing order of OSTA index (χ2 = 5.432, P = 0.02). The OSTA values of ≤−1 and phalanx QUS T-score of ≤−1.95 can differentiate postmenopausal nonvertebral fracture
with sensitivity of 75% and 81%, respectively, and specificity of 48% and 40%, respectively. Combining OSTA and phalanx QUS
yielded a sensitivity of 83% and a specificity of 84% to detect postmenopausal nonvertebral fracture, with an AUC of 0.64.
We conclude that OSTA and phalanx QUS are simple and effective clinical tools for identifying postmenopausal women at increased
risk of nonvertebral fractures and can thereby facilitate the appropriate and more cost-effective use of bone densitometry
to prevent osteoporotic fractures in developing countries. 相似文献
7.
Y. Taguchi I. Gorai M. G. Zhang O. Chaki M. Nakayama H. Minaguchi 《Calcified tissue international》1998,62(5):395-399
The objective of this study was to examine the value of NTx, a urinary cross-linked N-telopeptides of type I collagen, as
a marker of bone resorption. We assessed changes in pre- and postmenopausal bone resorption by evaluating the correlation
of NTx with L2–4 bone mineral density (BMD) in a total of 1100 Japanese women, aged 19–80 years [272 premenopausal (45.2 ±
6.2 years) and 828 postmenopausal (59.5 ± 6.2 years)]. Postmenopausal women were divided into three groups based on the range
of BMD (normal, osteopenic, and osteoporotic). Within each group, subjects were further segregated according to years since
menopause (YSM). NTx values were then evaluated for each group. Our results showed that BMD was significantly decreased (P < 0.05) and NTx was significantly increased (P < 0.01) after menopause in age-matched analysis. Consistent with a previous report, NTx was inversely correlated with BMD
for the entire cohort of study subjects (r =−0.299), although NTx correlated better with premenopausal than postmenopausal
BMD (r =−0.240 versus r =−0.086). This may have been due to the fact that elevated values of NTx were exhibited over the entire
range of BMD present in the postmenopausal women, suggesting that NTx might respond faster to the estrogen withdrawal than
BMD. In all postmenopausal women, regardless of the range of BMD, the increase in NTx reached a peak within 5 YSM. After 11
YSM, however, NTx remained elevated in the osteoporotic group but it decreased in the osteopenic group, and showed no significant
change in the group of postmenopausal women with normal BMD. These findings suggest that bone resorption is dramatically increased
within 5 years after menopause but remains increased only in osteoporotic women.
Received: 29 April 1997 / Accepted: 12 August 1997 相似文献
8.
Summary The effects of menopause and aging on serum total and ionized calcium concentrations were evaluated in 402 healthy women (aged
18–71 years), of whom 83 were premenopausal and 319 postmenopausal. Serum albumin and globulin concentrations and serum pH
were also measured in most of these women. Serum total but not ionized calcium concentration increased significantly at menopause.
This increase in the protein-bound component of total calcium in postmenopausal women was associated with increases in mean
serum globulin concentration (P=0.03) and in serum pH (P=0.03). Serum total calcium declined with age within the pre- and postmenopausal groups (r=−0.225,P=0.04 and r=−0.121,P=0.03, respectively). This was associated with an age-related decrease in serum albumin concentration in all women (r=−0.47,P<0.0001). Neither serum globulin concentration or pH varied with age. Thus, menopause and aging affect serum total, but not
ionized calcium concentration. 相似文献
9.
Leptin and Insulin Action in Severely Obese Women 总被引:1,自引:0,他引:1
Papadia F Marinari GM Camerini G Civalleri D Scopinaro N Adami GF 《Obesity surgery》2003,13(2):241-244
Background: The authors investigated the interrelationships between the components of the metabolic syndrome in severe obesity.
Methods: In non-diabetic, severely obese women, the degree of obesity (BMI), the insulin sensitivity (from the Homeostatic
Model of Assessment, HOMA), the serum leptin concentration and the presence of dyslipidemia and arterial hypertension were
evaluated. Results: In insulin-resistant patients, an overall impaired metabolic status and a greater cardiovascular risk
were observed, while serum leptin concentration was higher than in the insulin-sensitive ones. Leptin levels and HOMA data
correlated independent of BMI findings, while the presence of dyslipidemia and hypertension was unrelated to the other metabolic
syndrome factors. Conclusion: In severely obese women, although other factors independently intervene, serum leptin has a
role in developing the metabolic syndrome. 相似文献
10.
Brandacher G Winkler C Aigner F Schwelberger H Schroecksnadel K Margreiter R Fuchs D Weiss HG 《Obesity surgery》2006,16(5):541-548
Background: Increased activity of the immuno-modulatory enzyme indoleamine-2,3-dioxygenase (IDO) during immune activation,
results in tryptophan depletion. Tryptophan metabolic changes reduce serotonin production and cause mood disturbances, depression,
and impaired satiety, ultimately leading to increased food intake and obesity. Bariatric surgery significantly diminishes
immune mediators by substantial weight reduction. We examined IDO-mediated tryptophan-catabolism in morbidly obese patients
compared to lean individuals. Methods: Serum concentrations of kynurenine and tryptophan, calculated kynurenine to tryptophan
ratios (kyn trp-1) as an indirect estimate of IDO activity, and neopterin levels reflecting IFN-γ mediated immune activation, were assessed before and after bariatric surgery. The study population included 22 morbidly obese
individuals and 20 normal-weight volunteers. Results: Median weight loss after 24.4±5.1 months was 40.6 kg resulting in a
reduction of BMI from 44.1 kg/m2 to 29.9 kg/m2 (P<0.001). Preoperative kyn trp-1 in morbidly obese patients was significantly increased compared to the control group (41.6±20.1
mmol/mol vs 26.5±5.1 mmol/mol; P<0.001). Postoperative weight reduction did not lead to normalization of kyn trp-1 (37.9±14.0 mmol/mol). As a consequence,
tryptophan levels were significantly lower in morbidly obese patients (pre-: 51.5±9.2 μmol L−1 and postoperatively: 46.9±7.6 μmol L−1) when compared with those of normal-weight controls (64.8±9.5 μmol L−1; P<0.001). In addition, neopterin levels were elevated in the study population pre- and postoperatively compared to normal-weight
volunteers (both P<0.001). Conclusions: Tryptophan depletion in morbidly obese patients is due to chronic immune activation and persists in
spite of significant weight reduction following bariatric surgery. This might thereby be responsible for diminished serotonin
functions, leading to unchanged satiety dysregulation and a reward-deficiency-syndrome. 相似文献
11.
Calcium Metabolism in Pre- and Postmenopausal Morbidly Obese Women at Baseline and After Laparoscopic Roux-En-Y Gastric Bypass 总被引:5,自引:2,他引:3
Background: The authors evaluated calcium metabolism in obese women, before and after menopause, at baseline and at 6 and
12 months after laparoscopic Roux-en-Y gastric bypass (LRYGBP). LRYGBP restricts food intake and produces physiological changes
that may be similar to those after high Billroth II subtotal gastrectomy. Methods: Serum calcium (Ca), phosphate, bone-specific
alkaline phosphatase (BSAP) and 25-hydroxyvitamin D3 (25-OH D) were measured at baseline and 12 months after LRYGBP. Urinary
N-telopeptide (u-NTX) was measured at baseline and serum C-telopeptide (s-CTX) at 6 and 12 months after LRYGBP. Parathormone
(PTH) was measured at baseline and 6 and 12 months after LRYGBP. Patients were divided into 2 groups: Group I (n=30) pre-menopausal
women aged 18-42 y, and Group II (n=30) post-menopausal women aged 40-71 y. Patients with renal, hepatic, metabolic and bone
disease, smoking women, as well as patients with u-NTX values at baseline >67 nMBCE/mMCr were excluded. Results: At baseline,
PTH was elevated in 10% of patients in each group, correlated positively with BMI, and low serum calcium values were found
in 30% of Group I and 16.7% of Group II. High values of serum C-telopetide were seen in Group I at 6 months after surgery
and in Group II 12 months after LRYGBP. Group II showed a greater increase in BSAP at 12 months after LRYGBP. 25-0H D decreased
in both groups, and a progressive increase in PTH was observed. Serum calcium did not change in both groups. Conclusion: Calcium
metabolism is altered in pre- and post-menopausal women following LRYGBP. Calcium and vitamin D supplementation is strongly
advised in all patients. 相似文献
12.
Background: Although the implications for the anesthetic and perioperative care of severely obese patients undergoing weight
loss operations are considerable, current anesthetic management of super-obese (SO) patients (BMI ≥50 kg/m2), including super-super-obese (BMI ≥60) derives from experience with morbidly obese (MO) patients (BMI 40-49.9 kg/m2). We compared anesthetic and perioperative data of SO patients and MO patients undergoing weight loss operations to evaluate
if anesthetic management influenced outcome. Methods: A retrospective analysis was performed on data from 150 consecutive
patients (119 MO, 31 SO) undergoing bariatric surgery between May 2000 and March 2005. Data analyzed included preoperative
anesthetic assessment, anesthetic management, postoperative care, and intra- or postoperative complications. Results: There
were no differences in anesthetic management or in postoperative course or outcome between MO and SO patients. Intraoperative
surgical complications occurred in 26% (n=8) in the SO group and 14% (n=15) in the MO group (P<0.01). Conclusions: No differences in outcome occurred between MO and SO patients undergoing bariatric operations under similar
anesthetic management. Anesthesia for weight loss surgery can be safely performed on SO patients with the understanding that
these patients are not at risk per se due to their higher BMI. The degree of obesity influenced only the incidence of intraoperative surgical complications. 相似文献
13.
Background
Previous studies have shown a reduction of elevated androgen levels in premenopausal women after marked weight loss induced by bariatric surgery. In this study, we aimed to assess whether circulating androgen levels also decline after bariatric surgery in women displaying normal values preoperatively as well as in postmenopausal women.Methods
In 36 severely obese women (six postmenopausal), levels of total testosterone, dehydroepiandresterone sulfate (DHEA-S), and sex hormone-binding globulin (SHBG) were assessed before and at ~1 year after gastric bypass. Free and bioavailable testosterone levels as well as the free androgen index were calculated by established formulas.Results
After the surgery, women had lost on average 43.1?±?1.8 kg. Independently of the pre/postmenopausal state, women showed a marked reduction in all testosterone-related androgen markers and DHEA-S levels, while SHBG levels markedly increased (all P?<?0.001). Respective changes were found in both women with and without preoperatively elevated levels. Changes after the surgery in testosterone-related markers as well as in SHBG levels but not in DHEA-S levels were correlated with changes in insulin levels independently of body weight changes.Conclusions
Data show a marked reduction of androgen levels in severely obese women after a surgically induced weight loss, which is independent from the menopausal state and preoperative levels. The mechanisms and consequences of these hormonal changes induced by bariatric surgery should be addressed in further studies. 相似文献14.
Santiago-Recuerda A Gómez-Terreros FJ Caballero P Martin-Duce A Soleto MJ Vesperinas G Pérez-Fernández E Villamor J Alvarez-Sala R 《Obesity surgery》2007,17(5):689-697
Background The authors studied changes in the upper airway in morbidly obese women and the relationship to sleep apnea-hypopnea syndrome
(OSAS).
Methods Patients underwent a cardiorespiratory polygraphic study, respiratory function test (spirometry, plethysmography, maximum
inspiratory pressures and arterial blood gas analysis), and computed tomographic studies of the upper airway.
Results 40 morbidly obese women being evaluated for bariatric surgery (mean age 39.6 ± 9.6 years old, BMI 48.7 ± 5.6 kg/m2) were studied. 37 women had OSAS, and 14 had severe OSAS. Results on respiratory function tests were normal. BMI and weight
had a positive correlation with apnea-hypopnea index (AHI), apnea index (AI), desaturation index (DI), lowest oxygen saturation
and CT90. Uvula diameter had a negative correlation with FEV1, FVC, VC IN and a positive correlation with TLC. Retropharynx soft tissue at the retropalatal level had a negative correlation
with FEV1, FVC and VC IN. The oropharynx area at maximal inspiration (total lung capacity) obtained a negative correlation with the
AHI (r = −0.423, P = 0.044), AI (r = −0.484, P = 0.042) and DI (r = −0.484, P = 0.019).
Conclusions Prevalence of OSAS in morbidly obese women is very high. Our results show the significant correlation between BMI and AHI
in morbidly obese women. Uvula diameter and retropharynx soft tissue are the upper airway parameters with higher relationship
with pulmonary function. A reduction in the cross-sectional area of the airway at the level of the oropharynx could be related
to the severity of OSAS in morbidly obese women. 相似文献
15.
This 5-year prospective study assessed changes in trabecular and cortical volumetric bone density at the non-weight-bearing
radius and weight-bearing tibia among clinically healthy pre- and postmenopausal women. Altogether 79 premenopausal (mean
age ± SD at baseline 33 ± 2 years) and 108 postmenopausal (68 ± 2 years) women participated in the baseline and follow-up
measurements. Trabecular density (TrD) of the distal radius and tibia and cortical density (CoD) of the radial and tibial
shafts were assessed by peripheral quantitative computed tomography (pQCT). Repeated measures analysis of variance was used
to analyze differences of means and mean changes between the age groups. As expected, TrD and CoD values were greater among
premenopausal than postmenopausal women. Changes in radial TrD were similar in both age groups: mean (95% confidence interval)
TrD of the distal radius declined by 3.0 mg/cm3 (−0.9 to 7.0) and 5.1 mg/cm3 (1.8–8.5) in the younger and older age groups, respectively. The respective declines in TrD of the distal tibia were 4.1
mg/cm3 (2.1–6.0) and 2.8 mg/cm3 (1.2–4.3). Decline in CoD was greater in the older than younger age group at both the radial and tibial shafts (P < 0.001). The mean absolute declines in radial CoD were 33.3 mg/cm3 (27.9–38.7) and 49.4 mg/cm3 (44.9–53.9) in younger and older women, and the declines in tibial CoD were 16.5 mg/cm3 (12.6–20.2) and 28.1 mg/cm3 (25.0–31.2), respectively. In conclusion, volumetric TrD in the weight-bearing tibia and non-weight-bearing radius showed
similar age-related declines among pre- and postmenopausal women, while the decline in CoD was greater among postmenopausal
women. 相似文献
16.
Liu JM Zhao HY Ning G Zhao YJ Chen Y Zhang Zh Sun LH Xu MY Chen JL 《Calcified tissue international》2005,76(1):1-6
The correlations between the serum levels of OPG, RANKL with age, menopause, bone markers, and bone mineral densities (BMDs) at the lumbar spine and proximal femur were studied in 504 pre- and postmenopausal Chinese women aged 20–75 years. We found that age was positively and negatively correlated with serum concentrations of OPG (r = 0.442, P < 0.001) and RANKL (r = –0.263, P < 0.001), respectively. Compared with premenopausal women, postmenopausal women showed higher serum OPG levels (107.6 ± 3.0 vs 72.0 ± 1.8 pg/ml, P < 0.001), lower serum RANKL concentrations (4.7 ± 0.4 vs. 5.8 ± 0.3 pg/ml, P < 0.001) and RANKL/OPG ratios (0.045 ± 0. 004 vs. 0.099 ± 0.008, P < 0.001). Neither serum levels of OPG nor RANKL or RANKL/OPG ratio correlated with BMDs after adjustment of age and menopause. They also showed no differences among normal, osteopenic and osteoporotic postmenopausal women. Serum levels of OPG were positively correlated with urinary excretion of NTx (r = 0.1453, P = 0.006). Serum levels of RANKL (r = –0.1928, P < 0.001) and RANKL/OPG ratio (r = –0.1303, P = 0.013) were inversely correlated with serum concentrations of OC. In multiple regression analysis, up to 20% variance (R2 = 0.106–0.224) of the OPG-RANKL system in peripheral circulation can be explained by age, menopause and bone markers.These results suggest that although serum OPG and RANKL concentrations were unrelated with BMDs, the age– and menopause– dependent changes of serum OPG and RANKL might be a protective mechanism against the accelerated bone loss in postmenopausal women. 相似文献
17.
《Journal of clinical densitometry》2021,24(3):397-405
Introduction: The aim of this study was to evaluate the association of visceral and subcutaneous adipose tissue with bone mineral density (BMD), geometric indices of femoral neck strength and vertebral fractures in pre- and postmenopausal women with severe obesity. Methods: A cross-sectional study was conducted with pre- (n = 37) and postmenopausal (n = 21) women with body mass index higher than 40 kg/cm2. BMD at total body, lumbar spine, hip and forearm, presence of vertebral fractures, lean mass, visceral, and subcutaneous adipose tissue were assessed by DXA. Geometric indices of femoral neck strength were calculated by DXA. Serum bone turnover markers (CTX and osteocalcin) and 25(OH)D were also measured. Results: BMD at all studied sites was similar in pre- and postmenopausal women. In postmenopausal women, total subcutaneous adipose tissue was inversely associated with BMD at total femur (β = −0.009; 95% confidence interval [CI] −0.017; −0.002) and with strength index (β = −0.03; 95% CI −0.04; −0.01). In premenopausal women, visceral adipose tissue was inversely associated with cross-sectional moment of inertia (β = −0.95; 95%CI −1.89; −0.01). Vertebral fractures were highly prevalent in premenopausal (32%), and even more frequent among postmenopausal women (55%). Conclusion: Taken together, our results suggest that both visceral and subcutaneous fat may be detrimental for bone health in pre- and postmenopausal women, and that severe obesity may increase the risk of vertebral fractures, even in young women. 相似文献
18.
I. Gorai Y. Taguchi O. Chaki M. Nakayama H. Minaguchi 《Calcified tissue international》1997,60(4):317-322
Urinary excretion of cross-linked N-telopeptide of type I collagen (NTx) has been reported to be a specific marker of bone
resorption [18]. We assessed a new immunoassay for NTx as an indicator of changes in bone resorption caused by spontaneous
menopause and compared cross-sectionally the levels of urinary NTx, hydroxylysylpyridinoline (HP), lysylpyridinoline (LP),
hydroxyproline (OH-Pr), other serum biochemical indices, and lumbar spine and proximal femur bone mineral density (BMD). Eighty-one
Japanese women aged 22–77 participated in this study; 36 were premenopausal and 45 were postmenopausal. Urinary HP, LP, and
NTx stayed at low levels in the premenopausal period and rose 21%, 30%, and 67% in the postmenopausal period, respectively.
The rise in LP and NTx was statistically significant (P < 0.01), suggesting that NTx is mostly released from bone matrix when bone resorption is accelerated. When premenopausal
women were divided into two age groups and postmenopausal women were divided into two groups according to years since menopause
(YSM) there were significant differences in LP and NTx between women <4 YSM and women aged <40 and those women aged 41+ (P < 0.01 and P < 0.05, respectively). A significant 110% increase in urinary NTx and a 48% increase in urinary LP were observed in postmenopausal
women compared with age-matched premenopausal women aged 45–55. All biochemical markers other than serum PTH correlated significantly
with each other (r = 0.243–0.858, P < 0.05–0.0001). Urinary NTx inversely correlated with lumbar spine BMD. When postmenopausal women were divided into three
groups, the correlation between bone resorption and formation markers in women 0-1 YSM was greater than in women 2–10 YSM
and in women 11 + YSM, indicating that resorption and formation are coupled at the early postmenopausal period. We conclude
that urinary NTx is responsive to changes in bone metabolism caused by estrogen deficiency and may be a more sensitive and
specific marker than HP, LP, or OH-Pr in the early postmenopausal years.
Received: 15 February 1995 / Accepted: 18 October 1996 相似文献
19.
Peripheral Volumetric Bone Mineral Density in Pre- and Postmenopausal Chinese Women in Hong Kong 总被引:2,自引:0,他引:2
Qin L Au SK Chan KM Lau MC Woo J Dambacher MA Leung PC 《Calcified tissue international》2000,67(1):29-36
The aim of this cross-sectional study was to use a newly available precise and multislice pQCT (Densiscan 2000) for establishing
reference data of volumetric bone mineral density (vBMD) of the distal radius. vBMD of the nondominant wrist was measured
in 118 healthy Hong Kong Chinese women aged 41–60. Anthropometric parameters, menstrual status, and handgrip strength were
also measured. Results showed that there was a significant age-related decline in trabecular BMD (tBMD), integral BMD (iBMD),
and cortical BMD (cBMD), with correlation coefficients ranging from −0.401 to −0.547 (P < 0.001). The annual decline of vBMD was 2.22%, 1.79%, and 0.88% in tBMD, iBMD, and cBMD, respectively. When subjects were
divided into premenopausal and postmenopausal groups, we found an age-related decline in tBMD and iBMD, but not in cBMD in
both groups. The vBMD values interpreted in mg/cm3 in premenopausal women were 238.4 ± 57.2 in tBMD, 604.6 ± 82.9 in iBMD, 1415.5 ± 129.9 in cBMD, and declined significantly
(all P < 0.001) to 193.7 ± 54.7 in tBMD, 500.0 ± 90.3 in iBMD, and 1306.7 ± 153.5 in cBMD in the postmenopausal women. On average,
16.7% of the subjects showed their vBMDs to be below −1 SD and only 1.7% of them lower than −2 SD. Linear regression showed
that the annual decline of vBMD was faster in postmenopausal women with 2.42% in tBMD, 1.90% in iBMD, and 0.88% in cBMD compared
with 1.91% in tBMD, 0.98% in iBMD, and 0.55% in cBMD in the premenopausal women. After adjustment for age, only the iBMD with
dominant trabecular elements showed a significantly accelerated decrease after the onset of menopause (P= 0.008). Weak or no association was found among vBMDs with anthropometric parameters, years since menopause, or handgrip
strength. In conclusion, we found a significant age-related decline of vBMDs in Hong Kong Chinese women aged 41–60 years,
characterized by the early reduction of metabolically active trabecular bone after entering the fourth decade of life, with
an accelerated decline after the onset of menopause.
Received: 20 May 1999 / Accepted: 21 January 2000 相似文献
20.
Unbalanced Diet to Lower Serum Cholesterol Level is a Risk Factor for Postmenopausal Osteoporosis and Distal Forearm Fracture 总被引:1,自引:1,他引:0
M. Varenna L. Binelli F. Zucchi D. Ghiringhelli L. Sinigaglia 《Osteoporosis international》2001,12(4):296-301
The purpose of this study was to assess whether dietary changes aimed at reducing serum cholesterol can increase the risk
of osteoporosis (OP) and fracture. The study group consisted of 311 postmenopausal women with high serum cholesterol levels
and following a diet low in dairy products (calcium intake estimated at less than 300 mg/day) for 27.3 ± 29.1 months. This
sample was compared with a case–control group of 622 healthy postmenopausal women paired for age and age at menopause and
with a calcium intake estimated at more than 1 g/day. Bone mineral density was measured at the lumbar spine by dual-energy
X-ray absorptiometry. Prevalence of OP was significantly higher in women with a low dairy calcium intake (42.1% vs 22.3%; p<0.0001), as was the number of Colles” fractures occurring after menopause (4.5% vs 1.6%; p = 0.008). Multiple logistic regression analyses demonstrated that a diet low in dairy calcium was a risk factor for OP (OR
= 2.52, 95% CI 1.84–3.45) and Colles” fracture (OR = 2.72, 95% CI 1.18–6.26). In the low dairy calcium group, diet duration
significantly influenced the risk of OP (OR = 1.13, 95% CI 1.01–1.25 for 1 year of diet). No differences in further risk factors
for coronary heart disease were found between the groups, but the proportion of women physically active was lower in the women
with high serum cholesterol levels. A diet that severely limits calcium intake from dairy products in an attempt to correct
raised serum cholesterol levels is a risk factor for postmenopausal OP and Colles” fracture. Dietary intervention methods
to lower serum cholesterol in postmenopausal women should maintain an adequate calcium intake by providing calcium from low-fat
dairy products or calcium supplements.
Received: 16 May 2000 / Accepted: 18 November 2000 相似文献