固定义齿修复与牙合垫式可摘局部义齿修复在牙齿重度磨损伴牙列缺损中的应用效果比较

目的 比较固定义齿修复与牙合垫式可摘局部义齿修复在牙齿重度磨损伴牙列缺损中的应用效果.方法 选取我科室2015年6月至2020年6月收治的52例牙齿重度磨损伴牙列缺损的患者作为研究对象,按照随机数字表法将其分为对照组(26例)与观察组(26例).对照组患者采用牙合垫式可摘局部义齿修复治疗,观察组患者采用固定义齿修复治疗...     

不同剂量重组人骨形态发生蛋白2对人成骨肉瘤细胞系SaOS-2成骨活性的影响

目的 探讨不同剂量的重组人骨形态发生蛋白2(rhBMP-2)对人成骨肉瘤细胞系SaOS-2成骨活性的影响.方法 将体外培养的SaOS-2细胞分别暴露于0(对照)、2、20、200μg/L的rhBMP-2中,培养12、24、48 h后,以实时荧光定量PCR方法测定SaOS-2细胞碱性磷酸酶(ALP)和骨钙素(BGP)mRNA的表达水平.结果 SaOS-2细胞ALP和BGP mRNA表达量随rhBMP-2刺激剂量的增加呈上升趋势.20μg/L rhBMP-2作用48 h(1.60±0.64)和200 μg/L rhBMP-2作用12、48 h(1.70±0.41、1.80 ±0.19)SaOS-2细胞ALP mRNA 相对表达量较同一时间段对照组(12、48 h分别为0.80±0.25、0.74±0.21)明显升高(P均<0.05).2μg/LrhBMP-2作用24 h(1.67±0.33)、20μg/L rhBMP-2作用12、24 h(2.42±0.13、1.82±0.14)和200 μg/L rhBMP-2作用12、24 h(1.46±0.11、1.24 ±0.07)SaOS-2细胞BGP mRNA相对表达量较同一时间段对照组(12、24 h分别为1.01±0.14、0.84±0.12)明显升高(P均<0.05).结论 rhBMP-2能明显刺激SaOS-2细胞ALP、BGP mRNA表达升高,并呈现剂量一效应关系,但表现的剂量特征不同.

Abstract：

Objective To investigate the effect of recombinant human bone morphogenetic protein 2 (rhBMP-2) on the osteogenic activities of human osteosarcoma cell line SaOS-2. Methods SaOS-2 cells were exposed to rhBMP-2 for 12,24,48 h at 0(control) ,2,20,200 μg/L, respectively. The mRNA expression of alkaline phosphatase(ALP) and bone gla(BCP) were detected by real time polymerase chain reaction. Results The mRNA expression of ALP and BGP of SaOS-2 cells increased gradually with rhBMP-2. The mRNA expression of ALP of the 20 μg/L group exposed for 48 h(1.60 ± 0.64), and the 200 μg/L group exposed for 12,48 h(1.70 ± 0.41, 1.80±0.19) were significantly higher than those of control (12 h: 0.80±0.25, 48 h: 0.74±0.21, allP<0.05). The mRNA expression of BGP of the 2 μg/L group exposed for 24 h(1.67 ± 0.33), the 20 μg/L group exposed for 12,24 h(2.42 ± 0.13,1.82 ± 0.14) and the 200 μg/L group exposed for 12,24 h(1.46 ± 0.11,1.24 ± 0.07) were significantly higher than those of control( 12 h: 1.01 ± 0.14, 24 h: 0.84 ± 0.12, all P< 0.05). Conclusions rhBMP-2 can promote the mRNA expression of ALP and BGP of SaOS-2 cells. They have a dose-response relationship, but represent a different dose-response effect.     

氟对大鼠骨代谢的影响

目的 观察氟对大鼠骨代谢的影响,探讨氟骨症的发病机制.方法 Wistar雄性大鼠80只,体质量80～100 g.将大鼠按体质量随机分为4组:对照组(饮用自来水),低剂量组(NaF,50 mg/L),中剂量组(NaF,100 mg/L),高剂量组(NaF,150 mg/L),每组20只.饲养12周,乙醚麻醉处死大鼠,观察大鼠氟斑牙发生率;股动脉取血,放射免疫法测定血清骨钙素(BGP)、甲状旁腺激素(PTH)、降钙素(CT);比色法测定血清碱性磷酸酶(ALP)、酸性磷酸酶(ACP).结果大鼠氟斑牙检出率组间比较差异有统计学意义(x2=82.81,P＜0.01);其中低(80%,16/20)、中(100%,20/20)、高剂量组(100%,20/20)与对照组(0,0/20)比较差异有统计学意义(x2值分别为22.67、40.00、40.00,P均＜0.01).大鼠血清BGP、PTH、CT组间比较差异有统计学意义(F值分别为38.614、20.778、3.023,P＜0.01或＜0.05);但ALP、ACP组问比较差异无统计学意义(F值分别0.609、2.895,P均＞0.05).血清BGP:低、中、高剂量组[(19.60±12.79)、(33.41±10.81)、(39.46±9.51)mg/L]高于对照组[(7.35±3.22)mg/L,P均＜0.01],中、高剂量组高于低剂量组(P均＜0.01);血清PTH:低、中、高剂量组[(72.27±25.38)、(67.80±12.01)、(106.52±36.37)pmol/L]高于对照组[(47.08±9.22)pmol/L,P均＜0.01],高剂量组高于低、中剂量组(P均＜0.01);血清CT:中、高剂量组[(13.39±2.07)、(15.05±4.77)pmol/L]低于对照组[(26.06±28.31)pmol/L,P均＜0.05],也低于低剂量组[(24.49±14.10)pmol/L,P＜0.05].结论氟影响大鼠的骨代谢,BGP、PTH、CT在氟骨症发病中起着重要的作用.     

2011年江西省萍乡市地方性氟中毒病区氟源调查

目的 调查江西省萍乡市地方性氟中毒病区儿童饮水、膳食及空气摄氟量,探索摄氟的主要来源,为当地选择防治措施提供理论依据.方法 2011年,在萍乡市湘东区湘东镇甘泉村和美建树,选择41名当地出生居住的8～12岁儿童作为调查对象,根据Dean法检查儿童氟斑牙结果进行分组:牙齿正常者为对照组;可疑氟斑牙者为可疑组;极轻度、轻度、中度和重度氟斑牙者为氟斑牙组,分别为10、14、17人.采用三日称量法进行儿童膳食调查,并采集饮水、尿液、食物、空气等样品,用氟离子选择电极法检测含氟量.结果 对照组、可疑组和氟斑牙组儿童饮水含氟量均数分别为0.17、0.69、0.80 mg/L,其中可疑组和氟斑牙组明显高于对照组(H值分别为10.644、12.384,P均＜0.01);日均饮水氟摄入量均数分别为0.23、0.61、0.99 mg/d,其中可疑组和氟斑牙组明显高于对照组(Z值分别为-2.615、-3.075,P均＜0.01);日均食物氟摄入量和日均空气氟摄入量分别为(0.93±0.46)、(1.04±0.49)、(1.05±0.52)mg/d和(0.10±0.07)、(0.14±0.13)、(0.11±0.09)mg/d,3组间比较,差异无统计学意义(F值分别为0.195、0.420,P均＞0.05).上述3组儿童日均总氟摄入量分别为(1.26±0.52)、(1.79±1.04)、(2.15±1.42)mg/d,组间比较差异无统计学意义(F=1.952,P＞ 0.05).通过岭回归分析,日均饮水氟摄入量与总氟摄入量之间的相关系数为0.530,二者呈正相关关系(t=2.42,P＜0.05).结论 饮水氟含量高是造成该地区地方性氟中毒的主要原因,应该从改换水源角度落实相应的防治措施.     

氟对大鼠骨代谢的影响

Objective To study the effect of fluoride on bone metabolism in rats, and to understand the mechanism of pathogenesis of skeletal fluorosis. Methods A total of 80 Wistar rats were randomly divided into 4 groups that included control group (distilled water), low-dose group(NaF, 50 mg/L), medium-dose group (NaF,100 mg/L) and high-dose group(NaF, 150 mg/L), respectively. After being bred for 12 weeks, the rats were put to death (etherization). Incidence of dental fluorosis was estimated, and serum was collected. Radioimmunoassay was employed to detect the levels of osteocalcin (BGP), parathyroid hormone (PTH) and calcitonin (CT), respectively.Colorimetry method was employed to determine the levels of alkaline phosphatase (ALP) and acid phosphatase (ACP). Results Incidence of dental fluorosis between the four groups was significantly different statistically(x2 =82.81 ,P ＜ 0.01 ). The incidence was significantly different(x2 = 22.67, 40.00, 40.00, all P＜ 0.01 ) between low-dose ( 80%, 16/20), medium-dose ( 100%, 20/20), high-dose groups ( 100%, 20/20) and control group (0,0/20),respectively. Serum levels of BGP, PTH, CT were significantly different between the groups(F = 38.614, 20.778,3.023, P ＜ 0.01 or ＜ 0.05). There was no significant difference between the four.groups of ALP and ACP in serum (F = 0.609,2.895, all P ＞ 0.05 ). Serum BGP in low-dose, medium-dose and high-dose groups[ ( 19.60 ± 12.79),(33.41 ± 10.81 ), (39.46 ± 9.51 )mg/L, respectively] was significantly higher than that of the control group[ (7.35 ± 3.22)mg/L, all P ＜ 0.01 ]. Serum PTH in low-dose, medium-dose and high-dose groups[ (72.27 ± 25.38), (67.80 ± 12.01), (106.52 ± 36.37)pmol/L] was significantly higher than that of the control group[(47.08 ± 9.22)pmol/L,all P ＜ 0.01 ]. Serum PTH of the high-dose group was significantly higher than that of the low-dose and the mediumdose groups(all P ＜ 0.01 ). Serum CT in medium-dose and high-dose groups[ ( 13.39 ± 2.07), ( 15.05 ± 4.77)pmol/L ] was significantly lower than that of the control group[ (26.06 ± 28.31 ) pmol/L, all P ＜ 0.05 ] and also significantly lower than that of the low-dose group [ (24.49 ± 14. 10) pmol/L, all P ＜ 0.05 ]. Conclusions Fluoride affects bone metabolism in rats, BGP, PTH and CT play a key role in the pathogenesis of skeletal fluorosis.     

腓骨肌复合瓣修复颌骨成釉细胞瘤术后缺损的临床效果

目的 探讨腓骨肌复合瓣修复颌骨成釉细胞瘤术后缺损的临床效果.方法 选取2018年10月至2020年10月我院收治的80例成釉细胞瘤术后缺损患者作为本次研究对象,所有患者均采用腓骨肌复合瓣进行修复治疗,比较患者修复前、修复后3个月的咀嚼功能、颞下颌关节(TMJ)功能、修复满意度、美观度、牙槽嵴宽度、心理健康状态及生活质量...     

胺碘酮治疗急诊冠心病快速心律失常的疗效与安全性分析

目的 分析急诊冠心病快速心律失常患者使用胺碘酮治疗的疗效与安全性。方法 选取清华大学附属垂杨柳医院2020年6月—2021年6月收治的140例急诊冠心病快速心律失常患者作为研究对象,使用抽签法随机分为对照组和观察组,各70例。对照组予以普罗帕酮治疗,观察组予以胺碘酮治疗,对比2组临床疗效、心电图、心率、血流动力学参数及治疗安全性。结果 观察组治疗总有效率94.28%,高于对照组的78.57%(P<0.05)。治疗后,观察组心率低于对照组,P-R间期、Q-T间期均短于对照组（P<0.05）。治疗后,观察组血浆比黏度、细胞沉降率、高低切变率下全血黏度及血细胞比容低于对照组,纤维蛋白原高于对照组（P<0.05）。2组均未发生严重不良反应。结论 使用胺碘酮治疗急诊冠心病快速心律失常患者,可使心率保持在正常水平,恢复窦性心律,安全性高,临床疗效显著,值得推广。     

甘肃中部地区柴胡属植物资源调查

目的：调查研究甘肃省中部地区柴胡属（Bupleurum）植物资源。方法：通过对第四次全国中药资源普查甘肃省数据进行整理,结合文献资料,对甘肃省中部地区柴胡属植物种类、分布、栽培现状、药用现状进行分析。结果：甘肃省中部地区野生分布柴胡属植物16种6变种,其中10种5变种有药用记载;该地区近1/3的县种植柴胡,陇西县和甘谷县栽培面积较大。结论：甘肃省中部地区野生柴胡属植物资源丰富多样、分布广泛。该地区独特的生态环境适宜柴胡属植物种植。建议在明确柴胡属植物基原的基础上,结合当地实际情况,大力开发和利用柴胡资源。     

甲状旁腺激素对成骨肉瘤细胞系SaOS-2细胞成骨活性的影响

目的 观察不同浓度重组甲状旁腺激素1～34(简称hPTH)对成骨肉瘤细胞系SaOS-2细胞(简称SaOS-2细胞)骨碱性磷酸酶(ALP)和骨钙素(BGP)mRNA表达的影响.方法 SaOS-2细胞正常传代培养,用0、1、10、100 nmol/L hPTH处理细胞,分别在12、24、48 h提取细胞总RNA,反转录合成cDNA,采用实时荧光定量PCR的方法测定ALP和BGP mRNA的表达.结果 ①hPTH的不同剂量、不同的作用时间以及二者的交互作用对ALP的表达量均有影响(F值分别为29.32、2.92、7.64,P均<0.05).干预48 h,0、1、10、100 nmol/L组ALP mRNA的表达量(0.78±0.43、0.71±0.05、0.75±0.19、0.76±0.14)均低于同浓度组的12、24 h(12 h:1.01±0.16、1.37±0.38、1149±0.16、2.52±0.70,24 h:1.80±0.47、1.30±0.36、1.27±0.17、1.17±0.11,P均<0.05).干预12 h,100 nmol/L组ALP mRNA的表达量高于0 nmol/L组(P<0.05);干预24 h,1、10、100nmol/L组SaOS-2细胞ALP mRNA的表达量均低于0 nmol/L组(P均<0.05).②hPTH的不同剂量、不同的作用时间以及二者的交互作用对SaOS-2细胞BGP mRNA的表达量均有影响(F值分别为8.26、10.33、5.51,P均<0.05).干预48 h,0、1、10、100 nmol/L组BGP mRNA的表达量(1.17±0.28、0.98±0.08、0.92±0.17、0.84±0.59)均低于同浓度组的12、24 h(12 h:1.01±0.14、1.21±0.18、1.34±0.30、1.68±0.62,24 h:1.71±0.35、1141±0.47、1.28±0.31、1.01±0.18,P均<0.05).干预12 h,100 nmol/L组BGP mRNA的表达量高于0、1nmol/L组(P均<0.05);干预24 h,10、100 nmol/L组SaOS-2细胞BGP mRNA的表达量均低于0 nmol/L组(P均<0.05),100 nmol/L组SaOS-2细胞BGP mRNA的表达量低于1 nmoL/L组(P<0.05);干预48 h,10、100 nmol/L组SaOS-2细胞BGP mRNA的表达量均低于0 nmol/L组(P均<0.05).结论 在体外培养条件下,hPTH在短时间作用下可以显著增强SaOS-2细胞的成骨活性,随着刺激时间的延长,可使成骨活性呈现下降的趋势.

Abstract：

Objective To observe the effects of recombinant human parathyroid hormone 1 to 34(referred to as hPTH) on the expression level of alkaline phosphatase(ALP) and bone gla protein(BCP) in human osteosarcoma cell line SaOS-2(referred to as SaOS-2 cells). Methods SaOS-2 cells were subcultured and treated with 1, 10 and 100 nmol/L hPTH for 12, 24 and 48 h. Total cellular RNA was extracted, cDNA was synthesized by reverse doses of hPTH, different duration of action, and their interaction on the expression level of ALP mRNA of SaOS-2 cells was significantly different(F = 29.32, 2.92, 7.64, all P < 0.05). The expression level of ALP mRNA(0.78 ± 0.43, 0.71 ± 0.05, 0.75 ± 0.19, 0.76 ± 0.14) of SaOS-2 cells after treatment with 0, 1, 10 and 100 nmol/L hPTH for 48 h was lower than those of treated for 12 h(1.01 ± 0.16, 1.37 ± 0.38, 1.49 ± 0.16, 2.52 ± 0.70, all P< 0.05) and 24 h (1.80 ± 0.47, 1.30 ± 0.36, 1.27 ± 0.17, 1.17 ± 0.11, all P< 0.05). The expression level of ALP mRNA of SaOS-2 cells after treatment with 100 nmol/L hPTH for 12 hours was higher than that of the control(P < 0.05); the expression level of ALP mRNA of SaOS-2 cells after treatment with 1, 10 and 100 nmol/L hPTH for 24 h interaction on the expression level of BGP mRNA of SaOS-2 were significantly different (F = 8.26, 10.33, 5.51, all P< 0.05). The expression level of BGP mRNA(1.17 ± 0.28, 0.98 ± 0.08, 0.92 ± 0.17 and 0.84 ± 0.59) of SaOS2 cells after treatment with 0, 1, 10 and 100 nmol/L hPTH for 48 h was lower than those of treated for 12 h( 1.01 ± 0.14, 1.21 ± 0.18, 1.34 ± 0.30, 1.68 ± 0.62, all P< 0.05), and 24 h(1.71 ± 0.35, 1.41 ± 0.47, 1.28 ± 0.31 and 1.01 ± 0.18, all P < 0.05). The expression level of BGP mRNA of SaOS-2 cells after treatment with 100 nmol/L hPTH for 12 h was higher than that of those groups treated with 0 and 1 nmol/L hPTH(all P< 0.05). The expression level of BGP mRNA of SaOS-2 cells after treatment with 10 and 100 nmol/L hPTH for 24 h and 48 h was lower than those of the control(all P < 0.05). The expression level of BGP mRNA of SaOS-2 cells after treatment with 100 nmol/L hPTH for 24 hours was lower than that the group treated with 1 nmol/L hPTH(P < 0.05). Conclusions In vitro, hPTH significantly enhances osteogenic activities of human osteoblast in a short time, however, with prolonged stimulation time, osteogenic activity can show a downward trend.     

一测多评法同时测定心脑康胶囊中9种成分

目的 建立一测多评法同时测定心脑康胶囊中丹参素钠、丹酚酸B、芍药苷、阿魏酸、羟基红花黄色素A、2,3,5,4′-四羟基二苯乙烯-2-O-β-D-葡萄糖苷、斯皮诺素、甘草苷、葛根素的含量。方法 分析采用SVEA C₁₈色谱柱(250 mm×4.6 mm, 5μm);流动相乙腈-0.2%甲酸,梯度洗脱;体积流量0.5 mL/min;柱温30℃;检测波长280、403 nm。以葛根素为内标,计算其他8种成分的相对校正因子,计算其含量。结果 9种成分在各自范围内线性关系良好(r≥0.999 4),平均加样回收率99.83%～101.18%,RSD 1.04%～1.91%。一测多评法所得结果与外标法接近。结论 该方法准确稳定,重复性好,可用于心脑康胶囊的质量控制。