雌激素和维生素K抗去势成年雌性大鼠骨质疏松的实验研究

目的寻找一种或一组简便有效,价格低廉的防治骨质疏松（osteoporosis,OP）的方法,以期为防治骨质疏松药物的开发提供实验依据。方法以去卵巢雌性SD大鼠作为绝经早期骨质疏松模型。将50只SD雌性大鼠随机分为5组：卵巢去势（ovariectomized,OVX）组（OVX组,n=10）、卵巢去势＋雌激素组（OVX＋E组,n=10）、卵巢去势＋维生素K组（OVX＋vit K组,n=10）和卵巢去势＋雌激素＋维生素K组（OVX＋E＋vitK组,n=10）、假手术组（sham组,n=10）。卵巢去势1个月后,分组给药,8周后集中统一处死,取左侧股骨检测骨密度（bone mineral density,BMD）,右侧股骨病理学切片进行骨小梁形态计量观察,取右心室血清检测白介素（interleukin,IL）-6、骨钙素（bone gla protein,BGP）和胰岛索样生长因子（insulin-like growth factor,IGF）-1含量。结果①OVX组与sham组比较,骨密度显著下降,血清白介素-6和骨钙素测量值明显升高,而胰岛素生长因子-1显著下降,表明造模成功。②OVX组骨组织病理学切片40倍光镜下骨小梁形态计量观察结果与sham组、OVX＋vitK组、OVX＋E组和OVX＋E＋vit K组比较,差异有显著意义。其中,OVX＋E＋vit K组与sham组最相似。③OVX＋E组与OVX组比较,股骨干骺端（松质骨）骨密度显著升高,而股骨中段（皮质骨为主）骨密度升高,差异无显著意义。OVX＋vitK组与OVX组比较,股骨中段（皮质骨）骨密度显著升高,股骨干骺端（松质骨为主）骨密度升高,但差异无显著意义。OVX＋E＋vitK组股骨干骺端和股骨中段骨密度均显著性升高,与sham组最接近。④OVX＋E组与OVX组比较,血清白介素-6含量和骨密度低,胰岛素生长因子-1含量升高,差异有显著意义;OVX＋vitK组与OVX组比较,血清白介素-6测量值低,骨钙素和胰岛素生长因子-1测量值升高,差异有显著意义;OVX＋E＋vitK组血清白介素-6,骨钙素和胰岛素生长因子-1含量与sham组比较,最为接近。结论①去卵巢大鼠骨密度及骨形成指标胰岛素生长因子-1下降,骨吸收指标白介素-6、骨吸收和骨形成指标骨钙素升高,表明绝经早期骨代谢处于骨吸收大于骨形成的高转换状态,导致骨质疏松。②雌二醇（estrogen,E2）水平下降是骨质疏松的一个重要致病因素。病理形态学观察和骨密度及血清白介素-6、骨钙素、胰岛素生长因子-1含量检测表明,维生素K和雌激素防治骨质疏松均有效,二者联合用药的作用明显优于单一用药。     

雷诺昔酚对去势雌性大鼠骨密度的影响

目的 研究雌激素受体调节荆(SERM)雷诺昔酚(RAL)对去势雌性大鼠血生化及骨密度(BMD)的影响.方法 3月龄雌性SD大鼠24只.随机分为3组,假手术组(SHEM)、去势组(OVX)、雷诺昔酚组(RAL+OVX).RAL+OVX组术后7 d给予雷诺昔酚,术后3个月处死各组大鼠,对各组大鼠生化指标、BMD进行检测.结果术后3个月OVX组与SHAM组比较L3-5腰椎骨密度明显降低,差异有统计学意义(P<0.01),经过3个月的治疗,OVX+RAL组与OVX组动物相比,骨密度明显增加(P<0.01).OVX组与sHAM组相比,骨形成参数血骨钙素(BGP)值增加,差异有统计学意义(P<0.05);骨吸收参数24 h尿羟脯氨酸(HOP)及24 h尿Ca定量均明显升高,差异有统计学意义(均为P<0.01);OVX+RAL组与OVX组相比骨形成参数血BGP值降低,差异有统计学意义(P<0.01);骨吸收参数24 h尿HOP及24 h尿Ca定量均降低,差异有统计学意义(均为P<0.05).但未达到SHEM组水平.结论 去势后3个月大鼠骨密度明显下降,经RAL治疗后的去势大鼠骨密度得到较好的维持.     

运动对去卵巢大鼠骨矿含量和骨密度的影响

目的观察运动对去卵巢大鼠骨矿含量（bone mineral contant,简称BMC）和骨密度（bone mineral den-sity,简称BMD）的影响。方法雌性（sprague daivley,简称SD）大鼠随机分为正常对照组（SHAM）、去卵巢手术对照组（OVX）、雌激素治疗组（OVX＋ES）、运动组（OVX＋ET）。SHAM组行假手术,其余各组行双侧卵巢切除术,术后75天开始为期3个月的治疗。OVX＋ES组用尼尔雌醇治疗,OVX＋ET组按要求进行运动。治疗结束后检测股骨和胫骨的BMC和BMD。结果股骨BMD比较,SHAM组（0．206±0．009）高于OVX组（0．196±0．012）,差异有统计学意义（P〈0．05）;胫骨BMC比较,OVX＋ET组（0．298士0．033）高于OVX组（0．260±0．033）,差异有统计学意义（P〈0．05）;胫骨BMD比较,0VX组比其它3组均低,差异有统计学意义（P〈0．05或P〈0．01）;运动明显提高去卵巢大鼠胫骨的BMC和BMD,运动在提高胫骨BMD方面的功效优干激素疗法．结诊运动对绝经后骨盾疏凇症的形成有一定干预作用。     

中药骨康对骨质疏松大鼠骨骼肌自由基代谢的影响

目的研究中药对骨质疏松大鼠骨骼肌自由基代谢的影响。方法SD雌性大鼠去势后,分为正常对照组(SHAM)、去卵巢手术组(OVX)、雌激素对照组(OVX+ES)、中药组(OVX+TCD),SHAM组、OVX组予蒸馏水,OVX+TCD组予骨康灌胃给药,OVX+ES组给予尼尔雌醇灌胃,其余隔天给予蒸馏水灌胃。治疗3个月后取右侧骨直肌检测。结果2种治疗方法能不同程度提高去势大鼠骨骼蛋白含量,但OVX+ES组相对于OVX+TCD组其作用更加明显,不过OVX+ES组与OVX+TCD组的骨骼肌蛋白水平都未能达到SHAM组水平。OVX组骨骼肌的SOD活力明显低于其余各组,OVX+ES组的骨骼肌SOD活力最高,与其它各组比较存在显著性差异(P<0.05)。骨骼肌的GSH-PX活力OVX+ES组最高,与其它各组相比较存在明显的差异。中药治疗后去势大鼠的GSH-PX活力也有明显提高(P<0.01)。OVX组大鼠骨骼肌中的MDA含量明显高于SHAM组和其它治疗组(P<0.05),激素治疗与中药治疗比较均存在明显差异(P<0.05),OVX+TCD组MDA较正常组高。结论中药骨康能够提高骨骼肌素质,但其作用较雌激素弱。     

运动对去卵巢大鼠骨矿含量和骨密度的影响

目的观察运动对去卵巢大鼠骨矿含量(bone mineral contant,简称BMC)和骨密度(bonemineral density,简称BMD)的影响。方法雌性(sprague daivley,简称SD)大鼠随机分为正常对照组(SHAM)、去卵巢手术对照组(OVX)、雌激素治疗组(OVX+ES)、运动组(OVX+ET)。SHAM组行假手术,其余各组行双侧卵巢切除术,术后75天开始为期3个月的治疗。OVX+ES组用尼尔雌醇治疗,OVX+ET组按要求进行运动。治疗结束后检测股骨和胫骨的BMC和BMD。结果股骨BMD比较,SHAM组(0.206±0.009)高于OVX组(0.196±0.012),差异有统计学意义(P<0.05);胫骨BMC比较,OVX+ET组(0.298±0.033)高于OVX组(0.260±0.033),差异有统计学意义(P<0.05);胫骨BMD比较,OVX组比其它3组均低,差异有统计学意义(P<0.05或P<0.01);运动明显提高去卵巢大鼠胫骨的BMC和BMD,运动在提高胫骨BMD方面的功效优于激素疗法。结论运动对绝经后骨质疏松症的形成有一定干预作用。     

雌激素对去卵巢雌性大鼠子宫壁NPY-IRF的影响

目的:用SABC免疫组织化学染色法结合定量数据分析,探讨雌激素对去势雌性大鼠子宫壁神经肽Y免疫反应神经纤维(neuropeptide Y-immunoreactivity nerve fibers,NPY-IRF)的影响。方法:雌性SD大鼠分为假手术对照组(SHAM)、卵巢切除后4周组(OVX1)、卵巢切除后8周组(OVX2)、卵巢切除后肌注苯甲酸雌二醇4周组(OVX+E1)、卵巢切除后肌注苯甲酸雌二醇8周组(OVX+E2),共5组,每组10只,用SABC免疫组织化学染色法观察子宫壁NPY-IRF表达,实验数据进行统计学分析。结果:①OVX+E2组、SHAM组,NPY-IRF长,分支多;OVX+E1组NPY-IRF较长,分支较多;OVX1组及OVX2组,NPY-IRF较短,分支较少;②NPY-IRF表达概括为:OVX+E2组及SHAM组>OVX+E1组>OVX1组>OVX2组,P<0.05;OVX+E2组NPY-IRF表达与SHAM组相比差异无统计学意义,P>0.05。结论:子宫壁NPY-IRF的表达与雌激素水平呈正相关,雌激素水平高时,其表达增多;反之,则少。外源性雌激素对子宫壁NPY-IRF也有作用,但外源性雌激素是否能完全取代内源性雌激素还有待进一步研究。     

藏汉不同骨密度人群肠道菌群及粪便短链脂肪酸差异研究

目的 比对研究四川红原藏族与成都汉族不同骨密度人群肠道菌群及粪便短链脂肪酸差异,为通过调节肠道菌群预防不同人群骨质疏松积累资料。方法 选取红原藏族与成都汉族居民,测定其足跟骨骨密度,收集粪便与人口学信息,以藏族低骨密度个体为基础,依据年龄、性别、民族、是否服用抗生素四个维度进行倾向性评分获得研究人群,并按骨密度水平分组,测定粪便16S rRNA序列及短链脂肪酸的浓度与构成比,对比分析各组的差异。结果 红原藏族肠道菌群的物种丰度高于成都汉族。与汉族人群相比,藏族人群拟杆菌门相对丰度较高,变形菌门相对丰度较低（拟杆菌门:z = - 4.156,P＜0.001;z = - 3.226,P = 0.001;z = - 2.990,P = 0.002;变形菌门:z = - 4.409,P＜0.001;z = - 3.287,P = 0.001;z = - 2.392,P = 0.016）。柯林斯菌属是藏族中骨密度组优势菌属,瘤胃球菌属2和乳球菌属分别是汉族中、高骨密度组优势菌属。两组人群粪便短链脂肪酸比较,藏族三组骨密度人群乙酸、异戊酸浓度均低于汉族人群（乙酸:t = - 3.119,P = 0.003;t = - 3.056,P = 0.003;t = - 5.104,P＜0.001;异戊酸:z = - 3.822,P＜0.001;z = - 3.497,P＜0.001;z = - 2.158,P = 0.031）,但高、中骨密度组异丁酸、异戊酸、戊酸和己酸构成比高于汉族人群（异丁酸:z = - 3.693,P＜0.001;z = - 3.388,P = 0.001;异戊酸:z = - 3.748,P＜0.001;z = - 3.844,P＜0.001;戊酸:z = - 3.778,P＜0.001;z = - 3.966,P＜0.001;己酸:z = - 2.535,P = 0.011;z = - 3.570,P＜0.001） 结论 红原藏族和成都汉族不同骨密度组的肠道菌群及粪便短链脂肪酸含量和构成比不同,其与骨密度的关系值得进一步探讨。     

17β-雌二醇下调MCP-1及RhoA表达发挥心血管保护作用

目的:探讨雌激素对去势雌性Sprague-Dawley大鼠单核细胞趋化因子1(MCP-1)及Ras同源基因家族成员A(Rho A)水平的调控及其机制,研究雌激素对心血管的保护作用。方法:将45只3月龄雌性Sprague-Dawley大鼠随机分为空白对照组(CON,n=10)、假手术组(SHAM,n=10)、去势对照组(OVX,n=12)和去势实验组(OVX+E_2,n=13)。去势实验组给予200μg/(kg·d)17β-雌二醇灌胃,余3组给予等量生理盐水灌胃。灌胃16周后酶联免疫吸附测定(ELISA)法测定血清雌二醇(E_2)、卵泡刺激素(FSH)、MCP-1及Rho A水平;ELISA法检测心脏组织沉默调节蛋白1(SIRT1)、腺苷酸活化蛋白激酶(AMPK)水平。免疫组织化学法检测心脏组织MCP-1及Rho A水平。结果:灌胃16周后去势实验组血清及心脏组织MCP-1、Rho A水平低于去势对照组(P0.05);去势实验组心脏组织匀浆SIRT1、AMPK水平高于去势对照组(P0.05)。结论:外源性17β-雌二醇可下调去势雌性大鼠血清及心脏组织MCP-1、Rho A表达水平,从而发挥其心血管保护作用。其可能的机制是17β-雌二醇通过上调AMPK/SIRT1调控MCP-1及Rho A的表达水平。     

健康中国视域下全科医学专业以提升执业能力为导向的预防医学教育探索

目的 探索促使学生执业能力全面提升的预防医学教育路径,以满足健康中国新形势下医学人才培养的需求。方法 将我校全科医学专业学生按教学模式不同分为教改组（n=93）和对照组（n=300）,教改组采用以“执业能力”为导向的教学模式,以《社区预防与保健》课程为切入点进行教学改革,联合临床实践能力强化训练,重点培养学生评判性思维能力、临床预防服务能力和临床实践操作能力;对照组采用传统教学模式,并将两组学生的执业能力进行全面评价。结果 两组学生学习前评判性思维水平无差别（t=0.805,P=0.422）,实习后评判性思维水平教改组高于对照组（t=8.200,P＜0.001）;学生评判性思维能力在寻求真相（t=7.454,P＜0.001）、开放思想（t=7.152,P＜0.001）、分析能力（t=13.134,P＜0.001）、自信心（t=12.645,P＜0.001）、求知欲（t=8.956,P＜0.001）及认知成熟度（t=8.708,P＜0.001）、系统化能力（t=8.944,P＜0.001）七个维度方面进行比较,教改组均高于对照组;学生在主动学习（x²=16.954,P＜0.001）、处理信息（x²=12.132,P＜0.001）、拓宽知识面（x²=4.584,P=0.032）、公共卫生技能操作（x²=18.203,P＜0.001）、理论联系实践（x²=17.482,P＜0.001）、分析解决问题能力（x²=17.275,P＜0.001）及预防思维模式建立（x²=9.700,P=0.002）方面,教改组优于对照组;两组学生的病例分析（t=17.179,P＜0.001）、病历书写（t=2.611,P=0.009）、实践操作考核（t=10.988,P＜0.001）及病例答辩（t=17.161,P＜0.001）成绩比较,教改组优于对照组。结论 以“执业能力”为导向的预防医学精准教育模式,促进了学生执业能力的全面提升,更适合健康中国战略规划下人才培养的需求。     

盐酸达克罗宁胶浆联合丙泊酚在上消化道内镜检查中的临床效果评价

目的 探讨盐酸达克罗宁胶浆联合丙泊酚在上消化道内镜检查中的安全性和可行性。方法 随机选取2015年7月 - 2018年11月到我院内镜中心接受无痛内镜检查的上消化道疾病患者180例，随机分为观察组和对照组(各90例)，两组均静注丙泊酚进行麻醉诱导，观察组于检查前10 min口服盐酸达克罗宁胶浆10 ml进行表面麻醉。在血压、心率以及血氧饱和度指标，丙泊酚用量及患者清醒时间、镜下视野满意度等方面进行组间比较。统计分析采用SPSS 22软件，同组不同时间均值比较采用配对t检验，组间比较采用成组t检验。结果 观察组检查中的平均动脉压（t = 6.713，P＜0.001）、心率（t = 5.770，P＜0.001）及血氧饱和度（t = 8.624，P＜0.001）高于对照组，并发症的发生率低于对照组（χ2 = 10.150，P = 0.001）；观察组丙泊酚总用量（t = 11.069，P＜0.001）、检查时间（t = 6.506，P＜0.001）、患者苏醒时间（t = 13.117，P＜0.001）少于对照组；观察组镜下视野总满意率高于对照组（χ2 = 15.031，P＜0.001）。结论 在上消化道内镜检查中，盐酸达克罗宁胶浆联合丙泊酚可以降低对呼吸和循环系统的影响，减少丙泊酚总用量，缩短检查时间，提高镜下视野总满意度，是一种安全、有效、可行的麻醉方法。     

Effects of trans-resveratrol from Polygonum cuspidatum on bone loss using the ovariectomized rat model

trans-Resveratrol (resveratrol) has been shown in several studies to significantly modulate biomarkers of bone metabolism. But, there is no direct evidence supporting its inhibitory effect towards bone loss. In the present study, effects of resveratrol on bone mineral density (BMD) and bone calcium content (BCC) were examined in the ovariectomized (OVX) rat model. Female Wistar rats were divided into four groups: SHAM group (sham-operated), OVX group (OVX control), OVX + ALD group (OVX and treated with 1.0 mg/kg of body weight of alendronate sodium), and OVX + RES group (OVX and treated with 0.7 mg/kg of body weight of resveratrol). Tested materials were given by gavage for 12 weeks after ovariectomy. Results showed that rats in the OVX, OVX + ALD, and OVX + RES groups had significantly higher body weights and feed efficiency than those in the SHAM group (P < .01). The OVX group had significantly lower femoral epiphysis BMD than the SHAM group, and epiphysis BMD in the OVX + ALD and OVX + RES groups was significantly greater than that in the OVX group (P < .05). However, the femoral midpoint BMD was not significantly different among the four groups. Additionally, animals in the OVX group had significantly lower BCC compared with the SHAM group, while the BCC of the OVX + ALD and OVX + RES groups was significantly higher than that of the OVX group (P < .05). These results indicated that resveratrol could increase epiphysis BMD and inhibit the decrease of femur BCC in OVX rats, suggesting that it could play a role in protecting against bone loss induced by estrogen deficiency.     

Ovariectomy-induced hyperphagia does not modulate bone mineral density or bone strength in rats

The ovariectomized (OVX) rat is a widely used animal model for the development of prevention and treatment strategies for postmenopausal osteoporosis. However, ovariectomy-induced hyperphagia results in weight gain and adiposity. To prevent potential protective effects of increased body weight on bone from confounding outcomes of preclinical studies, pair-feeding is used in some but not all studies to control food intake, but its importance is not well elucidated. We investigated if the type of feeding, pair-feeding vs. consumption of diet ad libitum, modulates bone mineral and bone strength in OVX rats. Three-month-old female Sprague-Dawley rats (n = 12/group) were randomized to 1) sham-operated control (SHAM); 2) OVX pair-fed (OVX-PF); and 3) OVX ad libitum (OVX-AL). For 14 wk, OVX-PF rats were pair-fed with the SHAM group and daily food intakes and weekly body weights were obtained. At necropsy, regional body composition was measured by dual energy X-ray absorptiometry. Bone mineral density (BMD) and biomechanical bone strength of femurs and lumbar vertebrae (LV) were also measured. OVX-AL rats had higher overall food intake (P < 0.01), final body weight (P < 0.01), weight gain (P < 0.01), and fat mass (P < 0.05) than either SHAM and OVX-PF rats. Conversely, SHAM rats had higher femur (P < 0.001) and LV1-3 BMD (P < 0.001) as well as LV4 peak load (P < 0.01) than both the OVX groups, whereas bone outcomes did not differ between the OVX-PF and OVX-AL groups. In summary, ovariectomy-induced hyperphagia and weight gain do not modulate BMD or biomechanical strength at 14 wk postovariectomy, suggesting that pair-feeding is not essential.     

Flaxseed does not enhance the estrogenic effect of low-dose estrogen therapy on markers of uterine health in ovariectomized rats

Abstract Flaxseed (FS) is an oilseed rich in phytoestrogens and n-3 polyunsaturated fatty acids, compounds that may attenuate bone loss during aging. We previously demonstrated using the ovariectomized (OVX) rat model of postmenopausal osteoporosis that 10% dietary FS combined with low-dose estrogen therapy (LD) preserves vertebral bone mass and strength more so than either treatment alone. However, it was prudent to also consider the effect of this intervention on uterine tissue as LD, and possibly FS, may have estrogenic, and thus negative, effects on uterine tissue. The present study investigated if FS enhances the estrogenic effect of LD on markers of uterine health in OVX rats. Three-month-old rats were randomized to groups: (1) SHAM, (2) OVX, (3) OVX+FS, (4) OVX+LD, or (5) OVX+FS+LD. Ground FS was added to the AIN-93M diet (100?g/kg of diet), and LD was delivered by subcutaneous implant (0.42?μg of 17β-estradiol/kg of body weight/day) to mimic LD in postmenopausal women. After 12 weeks, histological analyses of uterine tissue demonstrated flattened or cuboidal luminal epithelia organized in a single layer in the OVX group, while FS, LD, and FS+LD induced a single layer of elongated luminal epithelia, columnar in shape. The SHAM group had the greatest epithelial mass. Cell proliferation was similar among all OVX groups. Therefore FS and FS+LD similarly induce estrogen-like effects on the morphology of luminal epithelia that are weaker than in the SHAM group without inducing cell proliferation in OVX rats. Thus, FS does not enhance the estrogenic effect of LD on markers of uterine health in OVX rats.     

海尔福对去卵巢和铅中毒大鼠骨组织及血液影响的实验研究

目的:观察海尔福对去卵巢和铅中毒大鼠骨组织及血液影响,了解海尔福对去卵巢和铅中毒大鼠骨骨质疏松治疗作用,为雌激素缺乏和铅中毒所引致骨质疏松症的防治提供实验依据。方法:选取5月龄健康雌性大鼠100只,分成5组。对照组、去卵巢模型组(OVX)、铅中毒模型组(LPD)、海尔福+去卵巢模型组(H+OVX)和海尔福+铅中毒模型组(H+LPD)。16周后,麻醉大鼠取左心血,处死后取双侧股骨。股骨切片光镜观察骨组织形态结构,并对血液中的钙、磷、铅、碱性磷酸酶和雌二醇进行测定,数据进行统计学分析。结果:H+LPD组骨组织结构、血钙、血磷和血红蛋白及碱性磷酸酶和雌二醇正常;0VX组、LPD组和H+OVX组的血钙及血磷均明显降低(P﹤0.01),血碱性磷酸酶活力升高(P﹤0.01),骨组织形态呈现骨质疏松的病理改变;0VX组和H+OVX组的雌二醇降低(P﹤0.01);LPD组的血铅明显高于对照组(P﹤0.01)。结论:去卵巢和铅中毒均可引起大鼠骨质疏松,铅中毒影响血红蛋白合成,海尔福对铅中毒所致的大鼠骨质疏松有治疗作用,而对雌激素缺乏大鼠骨质疏松治疗无效。     

山茶籽联合雌二醇对去卵巢大鼠骨重建和骨代谢酶的影响

目的:了解山茶籽联合雌二醇对去卵巢大鼠骨重建和骨代谢酶的影响,为山茶籽联合雌二醇治疗Ⅰ型骨质疏松症提供实验依据。方法:将90只5月龄健康雌性大白鼠分成假手术组(sham)、去卵巢模型组(OVX)、山茶籽组、雌二醇组(E2)、小剂量山茶籽+雌二醇组(Ts+E2),每组各18只。各实验组在第8、12、16周,随机处死6只大鼠,取左股骨切片观察骨组织,取右股骨测量骨密度,取左心血测量血清雌二醇、碱性磷酸酶。数据进行统计学分析。结果:OVX组的血清雌二醇和骨密度明显低于sham组(P<0.01),而血清碱性磷酸酶明显高于sham组(P<0.01);3个治疗组与sham组相比,各时间的血清雌二醇、碱性磷酸酶、骨密度均无显著性差异(P>0.05)。结论:小剂量的雌二醇联合山茶籽对去卵巢大鼠的骨质疏松症的治疗效果与单独使用较大剂量的山茶籽或较大剂量的雌二醇的治疗效果相近。     

Changes in Bone Metabolism and Antioxidant Defense Systems in Menopause-Induced Rats Fed Bran Extract from Dark Purple Rice (Oryza sativa L. Cv. Superjami)

Menopause is a matter of concern for women’s health due to a deficiency of female hormones; additionally, reactive oxygen species and aging can cause osteoporosis. Food becomes increasingly interesting as a menopausal woman’s alternative to hormone therapy. The effects of ethanol extracts from dark purple Superjami rice bran on bone metabolism and antioxidant defense systems in menopause-induced animal models were evaluated. Female rats underwent sham surgery or were ovariectomized to induce a menopause-like state. Rats were divided into a sham control group (SHAM), an ovariectomized control group (OVX), and an ovariectomized grou supplemented with Superjami rice bran extract group (OVX-S) and fed for 8 weeks. The OVX groups exhibited significantly more weight gain, amounts of bone turnover biochemical markers (alkaline phosphatase, osteocalcin, and C-terminal telopeptide), bone loss, lipid-peroxidation and oxidative stress than the SHAM group. However, Superjami bran extract added to the diet resulted in a significant reduction in body weight and lipid peroxidation, as well as enhanced bone metabolism and antioxidant enzyme activities, in ovariectomized rats. These results propound that extracts from Superjami rice bran have therapeutic potentiality against bone loss and oxidative stress in menopause-induced states and will be useful in preventing postmenopausal osteoporosis and oxidative damage.