定量CT对去势兔骨密度观察

目的用自制标准件动态观察去势兔的体重、骨密度（ＢＭＤ）。方法用定量ＣＴ（ＱＣＴ）方法测量了１８只健康成年雌兔去势前和去势后５个月、１０个月的体重和骨密度。结果去势后５个月６１．１％兔体重和ＢＭＤ下降,而去势后１０个月则１００％体重和骨密度明显下降。结论ＱＣＴ可对临床药物疗效的不同时期进行较精确的数字化动态观察,对骨质疏松的研究是较好的方法。     

绝经后骨质疏松人群雌激素受体基因Xba I多态性和年龄对骨密度的影响

目的 分析绝经后骨质疏松人群雌激素受体(ER)基因XbaⅠ多态性与骨密度的相关性以及在基因多态性下年龄、绝经年限及体重指数(BMI)对骨密度的影响。方法 用双能X线骨密度仪检测患者151例，以PCR-RFLP的方法检测ER基因XbaⅠ多态性，SPSS软件进行相关回归分析。结果 ER基因型的频率分布为XX型16．6％，Xx型67．5％，xx型15．9％，XX型的骨密度在腰椎、股骨颈和Ward’s三角要高于Xs型和xx型。但ER多态性与骨密度无相关性。在Xx型和XX型人群中年龄越大，绝经年限越长，腰椎和股骨上端骨密度则越低。在XX型中，BMI是影响股骨颈和Ward’s三角骨密度的主要因素。而在xx型中，腰椎和ward’s三角骨密度与年龄、BMI和绝经年限无相关性，绝经年限与股骨颈骨密度相关，大转子与BMI相关。结论 福州地区绝经后骨质疏松人群ER基因XbaⅠ基因型与骨密度无明显相关性，但在不同基因型人群中，其骨密度的丢失趋势和影响因素也各异，临床上应采用不同的防治措施。     

Determinants of bone mineral density in Chinese-American women

Summary Few data are available regarding bone mineral density (BMD) and its determinants among Chinese Americans. We identified determinants of BMD among 359 Chinese-American women in order to identify risk factors for low BMD in this burgeoning population. BMD in Chinese-American women is influenced by a number of factors, including immigration. Introduction Osteoporosis and low BMD are common among Chinese women, including Chinese Americans, who are a growing population at risk for osteoporosis in the US. Few data are available regarding BMD and its determinants among Chinese-American women. Methods In this study, we examined predictors of BMD in 359 ambulatory Chinese-American women, ages 20–90, using stepwise multiple regression analysis. Variables in the model included age, weight, height, menarche age, years since menopause, immigration age, years in US, percentage of life in US, number of pregnancies, oral contraceptive use, family history of osteoporosis, family history of hip fracture, daily calcium intake, exercise, time outdoors, alcohol consumption and tobacco use. Results Among premenopausal women, weight was the strongest predictor of BMD, accounting for 10.5% of the variance at the lumbar spine (LS), 15.2% at the total hip (TH) and 16.6% at the femoral neck (FN). Time outdoors was also a positive predictor of BMD (1.4% at LS, 2.8% at TH and 1.6% at FN), while family history of osteoporosis (1.4% at TH) and age (3.7% at FN) were negative predictors. Among postmenopausal women, greater BMD at the LS and TH was associated with greater weight and earlier immigration age. Weight accounted for 16.4% of the variance at the LS and 19.8% at the TH; immigration age accounted for 3.1% of the variance at the LS and 4.1% at the TH. At the FN, years since menopause and weight were predictors of BMD, accounting for 14.4% and 8.7% of the variance, respectively. While older age at immigration had a negative effect on BMD, years in and proportion of life in the United States were not significant predictors of BMD. Conclusions Bone mineral density in Chinese-American women is influenced by a number of biological and lifestyle factors, including immigration. The results of this study provide new insights into risk factors for low bone density as they relate to environmental determinants in the growing population of Chinese-American women.     

顺铂对雌性大鼠骨密度影响的实验研究

目的本文通过对去势雌性大鼠的动物实验研究，观察顺铂对骨代谢、骨密度的影响，并探讨其可能机制。方法将三月龄雌性SD大鼠30只，随机分为对照组和化疗组，每组15只。各组大鼠均用1％戊巴比妥钠腹腔内麻醉，行双侧卵巢切除术。术后1W开始用药，每两周用药1次，共6次。对照组腹腔内注射生理盐水1ml；化疗组腹腔内注射顺铂2mg／kg溶于1ml生理盐水中。术后13W处死各组动物，处死前用代谢笼收集24h空腹尿标本，自动生化分析仪测定尿钙浓度并计算出24h排泌量。氯胺T氧化法测尿羟脯氨酸(HOP)浓度并计算出24h排泌量；麻醉动物，开腹后下腔静脉取血离心，放免法测骨钙素(BGP)、血尿素氮(BUN)；取腰椎L4-6椎体，双能X线骨密度测量仪测腰椎骨密度。结果化疗组与对照组相比，骨密度降低，24h尿HOP及24h尿Ca定量升高，均有显著意义，血BGP无差异。结论本实验表明顺铂对大鼠的骨代谢存在直接的不良影响，使骨吸收增加，表现为松质骨骨密度降低。     

长春市16019例汉族人群骨密度调查及骨质疏松发病率分析

目的 调查长春市16019例汉族人群骨密度,分析本地区峰值骨量及骨密度变化的人群规律.方法 采用美国Osteometer Medi Tech公司生产的DTX-200型骨密度仪,检测受试者非受力侧前臂桡尺骨远端三分之一处骨密度(BMD).将16019例检测结果按不同性别每5岁为一年龄组,应用SPSS 13.0软件统计分析骨密度均值、T评分及骨量丢失百分率.结果 长春市男、女性人群骨密度峰值分别为0.625±0.109、0.506±0.058,其峰值年龄为30～39岁年龄段,40岁以后开始缓慢下降,50～59岁年龄段男性骨质疏松发病率为7.7%,女性为6.97%;60～69岁年龄段男性骨质疏松发病率为18.13%,女性为35.97%;70～79岁年龄段男性骨质疏松发病率为36.41%,女性为59.55%,80岁以上男性骨质疏松发病率为57.53%,女性为75.56%.结论 不同年龄及同年龄组两性之间比较骨密度测定值差异显著(P<0.01).50岁以后各年龄段女性骨质疏松发病率明显高于男性(P<0.01).本研究报告的骨密度峰值高于日本、丹麦同类型骨密度仪检测结果;与北京地区骨密度检测结果相近.与西双版纳傣族、西藏、甘肃东乡族比较,差异显著(P<0.01).     

雌激素对去势骨质疏松症大鼠骨密度和骨代谢影响的实验研究

目的研究雌激素对去势骨质疏松症模型大鼠骨密度(bone mineral density,BMD)和骨代谢的影响,并探讨其治疗骨质疏松症的机制。方法将48只雌性SD大鼠随机分配成对照组、模型组、雌激素组和雌激素+三苯氧胺组,每组12只。除对照组外,其他各组大鼠采用双侧卵巢摘除法制备骨质疏松症模型。雌激素组给予尼尔雌醇(1 mg/kg)灌胃,1次/周;雌激素+三苯氧胺组给予尼尔雌醇(1 mg/kg)和三苯氧胺(3 mg/kg)灌胃,1次/周;对照组和模型组分别使用等量生理盐水灌胃,均持续3个月。3个月后取材,检测大鼠左侧股骨BMD和股骨骨矿物盐含量、血清钙含量以及胫骨中骨骼钙含量;酶联免疫法检测大鼠血清碱性磷酸酶(alkaline phosphates,ALP)、血清抗酒石酸酸性磷酸酶-5b(tartrate resistant acid phosphatase-5b,TRAP-5b)的含量;免疫组化检测大鼠胫骨中骨保护素(osteoprotegerin,OPG)和核因子κB受体活化因子配体(receptor activator for nuclear factor-κB ligand,RANKL)蛋白的表达情况。结果治疗前,与对照组比较其他各组血清钙含量和血清TRAP-5b含量均显著升高(P0.05),骨钙含量、BMD和骨矿物盐含量显著降低(P0.05),血清ALP含量无显著性变化(P0.05);治疗后,与模型组比较雌激素组血清钙含量、血清TRAP-5b含量以及胫骨组织RANKL蛋白表达均显著降低(P0.05),骨钙含量、血清ALP含量、BMD、骨矿物盐含量以及胫骨组织OPG蛋白表达均显著升高(P0.05),而治疗后,与模型组比较雌激素+三苯氧胺组各项指标变化差异无统计学意义(P0.05)。结论雌激素通过显著性提高去卵巢骨质疏松模型大鼠骨骼钙、ALP、股骨骨密度、骨矿物盐以及OPG的含量,抑制骨钙流失、TRAP-5b及RANKL蛋白表达,达到改善骨质疏松的作用。     

Nutritional and exercise-related determinants of bone density in elite female runners

Although the female athletic triad is widely recognized clinically, there have been few studies quantitating the effect of disordered eating on bone mineral density. The purpose of this study was to explore the mechanisms through which disordered eating might influence the skeleton in nationally or internationally competitive runners. Fifty British national or higher standard middle and long-distance female runners aged under 36 years were recruited; 24 had amenorrhea (AM), nine had oligomenorrhea (OL) and the others were eumenorrheic (EU). Bone mineral density (BMD g.cm^–2) of the proximal femur (femoral neck and trochanter) and lumbar spine (L2–L4) was measured by dual energy X-ray absorptiometry (DXA) and compared with population-based European reference data. Dietary eating patterns were assessed with the Eating Attitudes Test (EAT26) and Bulimia Investigatory Test Edinburgh (BITE) questionnaires. High eating disorder scores were common; the EAT26 score predicted menstrual disorders (P=0.014) and correlated with body mass index (BMI). BMD was generally low in the AM group, but was raised in the proximal femur in the EU group. In the AM group, younger age at start of training was associated with higher trochanteric BMD. In addition, years of eumenorrhea were positively associated with spine BMD. Although a high EAT26 score was associated with lower BMD in the proximal femur, this could be explained by the intermediary effect of menstrual disorders. Osteocalcin, a marker of bone formation, was reduced in the AM group and was also reduced by high VO₂max and high BITE score, consistent with a central (hypothalamic) pathway for suppressing osteoblastic bone formation. Eumenorrheic runners had increased femoral BMD compared with European controls, consistent with a positive effect of increased mechanical loading. The effect of disordered eating to reduce BMD could be explained by its association with menstrual dysfunction. Lumbar spine BMD was reduced most in those athletes who menstruated for the shortest time in adolescence.     

广州地区1 530例骨密度分析及骨质疏松发病率研究

目的为了解广州地区正常人群骨密度(BMD)的变化规律和骨质疏松(OP)的患病率.方法采用美国Lunar公司的双能X线骨密度仪对广州地区1 530名20～89岁居民进行腰椎2-4和髋部骨密度测量.结果男性腰椎骨密度峰值在20～29岁,女性腰椎骨密度峰值在30～39岁,男性与女性髋部骨密度峰值均在30～39岁,峰值后随年龄增加而骨密度下降,女性在50～59岁出现明显加速,男性没有加速下降现象.广州地区男性50～89岁骨质疏松患病率26.53%,女性50～89岁骨质疏松患病率42.64%,两者之间差异有非常显著性(P＜0.01).结论广州地区女性骨质疏松患病率高于男性,预防骨质疏松的重点在女性,但对男性骨质疏松患者也不容忽视.     

安徽地区绝经后妇女雌激素受体基因多态性与骨密度的相关性研究

目的探讨安徽地区绝经后妇女雌激素受体（ER）基因多态性的分布及其与骨密度的相关性。方法随机选择288名安徽合肥地区健康绝经后妇女，运用双能X线骨密度吸收法（DEXA）测定腰椎和股骨颈、大转子骨密度（BMD），并采用PCR-RFLP（聚合酶链反应-限制性片断长度多态性）法分析ER基因多态性，并分析其相关性。结果安徽地区绝经后妇女ER基因型分布频率PP（13．2％）、Pp（45．8％）、pp（40．9％），XX（5．21％）、Xx（31．6％）、xx（63．2％），联合PvuⅡ和XbaⅠ这两种基因型后得到：PPXX（5．6％），PPXx（3．8％），PPxx（6．3％），PpXX（1．4％），PpXx（23．3％），Ppxx（25％），ppxx（34．7％），未检测到ppXX及ppXx型。PvuⅡ多态性与绝经后妇女腰椎BMD相关，PP基因型腰椎BMD显著低于pp和Pp基因型（P〈0．05），ER基因P等位基因是一种有益于骨量的基因型。XbaⅠ多态性与绝经后妇女各部位BMD间无明显相关性（P〉0．05）。联合分析PvuⅡ和XbaⅠ多态性与绝经后妇女BMD相关性发现，有Px单倍型的妇女腰椎部位的BMD显著低于无此单倍型的妇女（P〈0．01）。结论ER基因PVuⅡ多态性与绝经后妇女腰椎BMD有相关性，PP基因型妇女腰椎BMD减低，而具有Px单倍型的ER基因可能对BMD有不利影响。     

浙北地区6330例跟骨骨密度测定及骨质疏松患病率分析

目的 分析浙北地区人群骨密度(BMD)变化规律及骨质疏松(OP)患病率。方法 使用美国进口的Dove3000骨密度仪对浙北地区20～93岁的居民6330人进行跟骨BMD测定，然后进行比较和统计分析。结果 男女性骨峰值在30—39岁年龄段，峰值后随年龄增长BMD逐渐下降，女性在50岁后可见明显的骨质丢失加速，而男性丢失是逐渐和缓慢的。浙北地区50～79岁人群骨质疏松症发病率男性为35．8％，女性为67．3％。结论 骨质疏松研究的重点在中老年妇女，但对于男性也不能忽视；骨质疏松的预防应从青少年开始。     

Low-dose estrogen treatment suppresses periosteal bone formation in response to mechanical loading

Estrogen and exercise influence cortical bone formation. Both affect bone during growth, but with complex interactions. We hypothesized that estrogen reduces the osteogenic response caused by exercise at the periosteal surface of bone, while it enhances bone formation on the endocortical surface. To test our hypothesis, 16 young (8 weeks old) male Sprague-Dawley rats were randomized into two groups: (1) low-dose 17- ethynylestradiol treatment + bone loading (EE₂) or (2) vehicle-treated + bone loading (vehicle). We applied controlled loading to the right ulna at a peak force of 17 N, 2 min/day, 3 days/week for 5 weeks to simulate exercise. The left nonloaded ulna served as an internal control for loading. Mechanical loading increased cortical area (7.7%) and bone mineral content (8%) in the vehicle-treated group (P < 0.05) but only slightly increased cortical area in the EE₂ group (P = 0.08). Histomorphometry showed 1 week of mechanical loading increased periosteal bone formation rate by 29% in the vehicle group and this response was reduced (P < 0.05) to only 15% in the EE₂ group. At the endocortical surface, there were no differences in the loading response between the vehicle and EE₂-treated groups. We conclude low-dose EE₂ suppresses the mechanical loading response on the periosteal surface of long bones, but had no effect on the loading response at the endocortical bone surface in growing male rats.     

老年女性腰椎骨密度与年龄及椎旁体质成分相关性分析

目的探讨不同腰椎椎体骨密度(bone mineral density,BMD)与年龄及同层面椎旁腰大肌、竖脊肌、腹部脂肪、血管钙化情况的关系。方法收集体检中心行腰椎检查的老年女性90名,采用定量CT(quantitative CT,QCT)及后处理软件测量L2-L4椎体骨密度及三椎体同层面椎旁体质成分。统计学处理应用配对t检验、Pearson相关分析和多元逐步回归分析等。结果①3组椎体BMD均与年龄均呈负相关(P0.05),L2BMD、L3BMD均与双侧腰大肌、竖脊肌密度成正相关(r=0.233~0.301,P均0.05)。而L4BMD显示与双侧竖脊肌密度及腹部脂肪面积有良好的相关性,均呈正相关。②多元逐步回归分析显示除年龄外,肌肉是影响BMD的重要因素。年龄是唯一全部进入3组腰椎BMD回归方程,并呈负相关,是影响腰椎BMD的重要因素。结论老年女性的腰椎骨密度与椎旁腰大肌、竖脊肌密度,腹部脂肪面积及年龄密切相关,除年龄外椎旁肌肉密度对骨密度影响最大。QCT扫描更加直观、精确显示椎骨与椎旁体质成分情况,可作为测量诊断骨质疏松、体质成分的新手段。     

广州地区1 403例成年女性骨密度测定分析

目的了解本地区成年女性人群腰椎、股骨近端各部位骨密度(Bone mineral density BMD)随年龄、绝经年限、体重、身高的变化规律、各部位骨密度的偏相关分析和多元线性回归分析及骨质疏松患病率情况,为骨质疏松的诊断及预防提供科学依据.方法采用美国NORLAND公司的XR-46系列双能X线骨密度仪测量1 403例成年女性人群腰椎(L2-L4前后位及L3侧位)、非优势(左)股骨近端各部位(股骨颈、大粗隆及Ward's三角)BMD值,按10岁一个年龄组分7组对数据进行统计分析.结果广州地区成年女性腰椎骨峰含量出现在30～39岁组,而股骨近端骨峰含量出现在20～29岁组,腰椎及股骨近端各部位BMD值均随年龄增长而下降,腰椎和Ward's三角部位在50～59岁和60～69岁两年龄组骨量呈快速丢失现象.各部位骨密度的偏相关分析显示各部位的骨密度均呈相关性(P＜0.01).多元线性回归分析显示年龄和体重对绝经前女性股骨颈的骨密度有影响(P＜0.01),而绝经后女性腰3侧位骨密度除了年龄和体重的影响外,身高和绝经年限均对其有影响(P＜0.01).成年女性在达到峰值骨量后随着年龄的增加,各部位骨质疏松的患病率都呈上升趋势.结论女性机体BMD随年龄而变化,年龄、体重、绝经年限及身高等对机体BMD均有一定的影响,保持合适的体重和体型,有利于BMD的增加与维持.对不同年龄段的成年女性人群,预防骨质疏松的发生应以测量不同部位的BMD作为评价手段.     

福建省中老年人骨密度的流行病学调查

目的 了解福建省正常中老年人骨密度的水平和特点，为本地区骨质疏松症的防治提供参考。方法 应用双能X线骨密度仪(DEXA)对福建省福州、泉州、龙岩3个地区共计2643例中老年人腰椎及股骨近端进行骨密度测定。结果 中老年人随着年龄的增加，各部位的BMD逐渐下降，女性更为明显，尤其是50岁左右绝经后妇女更加突出，50岁以后女性BND低于男性。结论 OP的防治重点应放在50岁女性；测定的腰椎BMD与临床情况不相符时，应参考股骨近端的BMD进行诊断；福建省中老年人应每天进行适当的体育活动，维持骨密度，抑制骨丢失，预防OP的发生。     

环磷酰胺对大鼠骨密度和骨微结构的影响

目的：研究不同剂量环磷酰胺对雌性SD大鼠骨密度和骨微结构的影响。方法40只3月龄SD雌性大鼠随机数字表法分为环磷酰胺低剂量组、中剂量组、高剂量组和对照组,每组各10只,环磷酰胺各组分别腹腔注射不同剂量（5 mg／kg、8 mg／kg、10 mg／kg）的环磷酰胺,对照组腹腔注射等量生理盐水,每天一次,连续15天,观察大鼠骨密度及骨微结构等指标。结果不同剂量的环磷酰胺组与对照组比较,全身骨密度分别下降了9．8％、13．3％和15．6％;股骨骨小梁数目分别下降了49．8％、65．5％和72．8％;股骨骨小梁分离度则分别上升了225．2％、416．9％和577．4％。结论环磷酰胺可使大鼠骨密度降低,骨小梁数量减少,骨微结构受损,且环磷酰胺剂量越大,骨微结构受损越严重。     

The prevalence of significant left-right differences in hip bone mineral density

Introduction We determined the prevalence of left-right differences in hip bone mineral density (BMD) by dual-energy x-ray absorptiometry (DXA) and the resultant consequence, namely: the frequency at which patients would be classified differently if lumbar spine and only one hip (rather than both hips) were measured.Methods This was a retrospective DXA scan reanalysis of 3012 white women ≥50 yrs who had scans of both hips using Hologic DXA systems. The difference between left and right hips was considered significant if it exceeded the least significant change (LSC) for any of three hip subregions (total hip, femoral neck, trochanter). The number of women with osteoporosis in both hips, the left hip only, or the right hip only was determined by lowest T-score from total hip, femoral neck, or trochanter.Results Despite high left-right correlations of subregion BMD, significant left-right differences in BMD were common: the difference exceeded the LSC for 47% of women at total hip, 31% at femoral neck, and 56% at trochanter. Left-right differences in BMD that exceeded the LSC affected the percent agreement of left-right hip classification: for all women irrespective of spine status, there was 77% classification (diagnostic) agreement in hip pairs in which the left-right hip BMD difference exceeded the LSC versus 87% agreement in which LSC was not exceeded (significant difference in proportions, P<0.0001). The greatest risk of different classification would occur in women with normal spines as the diagnosis might be determined by hip T-scores. Using L1-4 lumbar spine T-scores, 1229 women were normal at the spine. Twenty-four (2%) were osteoporotic at both hips. However, 12 women (1%) were osteoporotic only in the left hip (significantly different from zero, P<0.001) and 11 (1%) only in the right hip (P<0.001); of these 23 women, the difference in BMD between the osteoporotic hip and the contralateral hip exceeded the LSC in 16 (70% of those with osteoporosis in only one hip). Using L1-4 lumbar spine T-scores, 1159 women were osteopenic at the spine. Of these, 126 (11%) were osteoporotic at both hips, 54 (5%) only in the left hip (P<0.001), and 42 (4%) only in the right hip (P<0.001); of these 96 women, the difference in BMD between the osteoporotic hip and the contralateral hip exceeded the LSC in 56 (58% of those with osteoporosis in only one hip).Conclusions A statistically significant number of women with osteoporosis are potentially classified differently when scanning only one hip as a result of the high prevalence of left-right differences in BMD. Although the percentages are low, the total number of women affected may be large. From a public health perspective, the practice of scanning both hips could potentially identify more women with osteoporosis and may help prevent future hip fractures.     

广州地区503例正常骨密度分析及研究

目的 探索广州地区正常人群骨密度（BMD）的变化规律。方法 采用美国Lunar公司的双能X线骨密度仪对广州地区503名20－49岁居民进行腰椎2－4和髋部骨密度测量。结果 男性腰椎骨密度峰值在20－岁，男性髋部骨密度峰值均在25－岁。女性腰椎骨密度峰值在30－岁，女性髋部骨密度峰值在25－岁。峰值后随年龄增加而骨密度下降，女性在50－岁出现明显加速，男性没有加速下降现象。结论 我国男性骨密度峰值略高于女性，但差异无显性（P＞0．05），男性骨密度峰值出现年龄略早于女性。     

上海市居民经3年干预后骨密度值测定及骨质疏松患病率的调查

目的　研究综合性干预措施对居民骨密度值 (BMD)及骨质疏松 (OP)患病率的影响 ,为OP的防治提供科学依据。方法　用整群随机抽样方法从上海市卢湾区 30～ 86岁健康人群中抽取5 98例为研究对象 ,将他们随机分为干预组和未干预组。要求干预组居民平时适当运动、合理营养 ,多食含钙、含VitD较高的食物等 ,干预时间为 3年 (2 0 0 0年 3月～ 2 0 0 3年 3月 )。两组居民均采用美国Lunar公司生产的双能X线骨密度仪测试L2 4和髋部的BMD ,然后进行统计、比较与分析。　结果干预组和未干预组骨量峰值 (PBM)均出现在 30～ 39岁 ,前者PBM值显著高于后者 (P <0 0 5 ) ;干预组所有部位BMD值均高于未干预组 (P <0 0 5 ) ,原发性OP患病率干预组显著低于未干预组 (P <0 0 5 )。结论　综合性的干预措施和加强健康教育、合理营养和运动 ,可提高青春期居民的骨峰值 ,对4 0岁以上中老年人可以减少其骨量丢失和减缓原发性OP的发生。     

女性类风湿关节炎患者骨密度的研究

目的探讨女性类风湿关节炎(RA)患者骨密度(BMD)的变化和骨质疏松(OP)的发生情况及其与临床指标的相关性.方法采用双能X线骨密度仪,测量了45例女性RA患者和45例女性正常人的前臂、腰椎2～4以及股骨颈、Ward区和大转子的骨矿含量,并同时测定握力、关节功能、X线分期、关节压痛数和肿胀数、日常生活能力评估(以健康评估表HAQ积分表示)和血沉、血清类风湿因子、C反应蛋白、钙、磷、碱性磷酸酶等指标.结果女性RA患者中除股骨Ward区骨量丢失较对照组差异有显著性(P＜0.05)外,其余各测定部位的BMD与对照组间差异无显著性(P＞0.05).45例女性RA患者中发生骨质疏松较非骨质疏松组年龄更大(P＜0.005),关节功能更差(P＜0.01),HAQ积分更高(P＜0.05),握力更低(P＜0.05),CRP更高(P＜0.05).女性RA患者中服用糖皮质激素组与未服用糖皮质激素组间BMD及OP发生情况的差异无显著性(P＞0.05).绝经后女性RA患者的骨量丢失较绝经前明显(P＜0.05);除桡骨远端外,绝经后患者各测定部位BMD均低于绝经前患者(P＜0.05).Logistic Regression分析显示年龄:OR=1.085[(1.019-1.156),P=0.011]和关节功能:OR=4.828[(1.368-17.039),P=0.014]为RA患者骨质疏松发生的相关因素.结论女性RA患者的总体骨量变化与正常人相近,但股骨Ward区的骨量丢失明显高于正常人.其BMD的降低和OP的发生与年龄、绝经和关节炎的严重程度有关.     

成人侏儒症患者骨密度检测结果及分析

目的 检测成人侏儒症患者腰椎、右髋、左髋骨密度值,与正常同龄人体检组相比较,探讨成人侏儒症患者与骨质疏松的相关性.方法 采用法国MEDI MINK公司生产的OSTEOCORE 3双能X线骨密度检测仪检测28例成人侏儒症患者腰椎、左髋、右髋骨密度,求出均值,以最低值作为诊断依据,并随机选出38例体检的正常同龄人与之比对.结果 患病组与对照组两组相比,年龄无差异,P=0.13＞0.005;身高有显著性差异,P=0.000＜0.005;体重有显著性差异,P=0.000＜0.005;腰椎骨密度均值有显著性差异,P=0.000＜0.005;右髋骨密度均值有显著性差异,P=0.000＜0.005;左髋骨密度均值有显著性差异,P=0.000＜ 0.005.28例侏儒症患者中骨量正常0例,占0％、骨量减少4例,占14.29％、骨质疏松24例,占85.71％、其中骨质疏松中达严重骨质疏松者12例.结论 成人侏儒症患者骨量减少合骨质疏松患病率达100％,无一例骨密度正常,要高度重视这一特殊人群的骨髂健康.