血液灌流对维持性血液透析患者成纤维细胞生长因子23的影响

目的：观察血液灌流（HP）对维持性血液透析（HD）患者血清成纤维细胞生长因子23（FGF-23）的影响及其可能的作用机制。方法：测定15例HD患者血液灌流前、后血清FGF-23、全段PTH（iPTH）及血清肌酐、钙、磷等指标。透析方案：血液灌流联合血液透析1次／2周,HD5次／2周,总共12次为1个疗程。结果：单次HP患者的血清肌酐水平均明显下降（P〈0．05）。HP治疗12次后患者FGF-23（88．51±35．0ng·L^-1）、血磷（87．85±33．65ng·L^-1）均明显下降。结论：血液灌流可降低HD患者FGF-23水平,改善血磷代谢。     

接触五硫化二磷工人眼部影响的调查

目的：探讨五硫化二磷对作业工人眼部的影响,方法：采用现场劳动卫生流行病学调查方法对57名（114眼）接触组工人和41名（82眼）对照组工人进行了眼部自觉症状和体征的调查。结果：接触组眼部自觉症状、结膜充血和翼状胬肉的检出率明显高于对照组,并有统计学意义。结论：五硫化二磷对作业工人眼部有损伤。     

钙、磷及其调节激素在实验性绝经后骨质疏松症发病中的作用

目的为了探求血、尿、骨灰中Ca、P及钙调节激素在绝经后骨质疏松症模型中的变化及其在发病中的作用.方法;选用11月龄雌性大鼠去卵巢后3个月建立绝经后骨质疏松症模型,取血、尿、骨标本.测右后肢股骨、胫骨及第2～4腰椎骨密度,血清、尿、骨灰中Ca、P含量及血清中E2、CT、PTH含量.结果与正常假手术组对照,模型组右股骨、胫骨及腰椎BMD,右股骨湿重、干重、灰重及骨灰Ca、P含量,血清中E2、CT明显降低(P＜0.01),而尿Ca排出量及血清PTH含量则较假手术组明显升高(P<0.01),血Ca、P及尿P含量无明显变化.结论Ca、P及E2、CT、PTH等调节激素在骨质疏松症发病中具有重要意义.     

款冬花氮磷钾吸收特性研究

目的：研究款冬花氮磷钾吸收特性。方法：测定不同生育时期的款冬花各器官的氮磷钾含量,结合干物质积累规律进行分析。结果：60～80d是叶片生长旺盛时期,80～100d是根茎部位生长旺盛时期,两者养分的累积速率都是氮〉钾〉磷;100～160d是植株养分需求的高峰时期,氮磷钾累积量均在全生育期的60％左右;180～220d之间,花蕾氮磷钾累积速率最大;整个生育期养分总累积量为钾〉氮〉磷,氮：磷：钾为4．00：1：4．29,需要氮41．693kg／667m^2,P20510．414kg／667m^2,K2044．709kg／667m^2,即每生产1kg干花,需消耗氮0．836kg,P2050．209kg,K200．897kg。结论：6月上旬和7月下旬应追肥一次以满足植株营养形态建成需求。9月中下旬宜追肥一次,以提高花的产量。每次追肥都应该氮磷钾兼施,尤其应保证钾肥的供应。     

氨基酸鳌合钙联合骨化三醇治疗肾性骨病的临床观察

目的:探讨治疗继发性甲状旁腺功能亢进(SHPT)骨病的方法.方法:对48例长期血液透析的慢性肾功能衰竭患者分别给予骨化三醇及骨化三醇联合钙剂治疗,观察血清钙、磷、钙磷乘积、甲状旁腺激素(PTH)水平变化,并对两种治疗方法的结果进行比较.结果:两种治疗均可显著增加血清钙水平,降低血清磷水平,骨化三醇加钙剂治疗的疗效更为显著(P＜0.01).结论:钙荆加骨化三醇治疗SHPT骨病优于单用骨化三醇.     

Mineral and nutritional requirements of preterm infant

Preterm infants are at risk of growth failure and metabolic bone disease due to insufficient nutrient supply in postnatal life. An ample provision of protein, energy, calcium and phosphates through parenteral or/and enteral nutrition is crucial for bone growth and mineralization. Additional vitamin D supplementation improves bone mineralization and enhance intestinal absorption of minerals.     

不同腹膜透析治疗模式对透析患者钙磷代谢及PTH的影响

目的 比较采用日间非卧床腹膜透析(DAPD)与经典持续非卧床腹膜透析(CAPD)对钙磷代谢及PTH的影响.方法 从新疆维吾尔自治区人民医院肾病科160例行腹膜透析患者中选取符合条件的83例,年龄在20～80岁,平均年龄为(45.26±16.14)岁,根据不同透析方式分为两组:CAPD组:共54例,男33例,女21例;DAPD组:共29例,男16例,女13例.CAPD组每次的透析剂量为6～8L、3～4次交换、夜间留腹(留腹的透析液浓度为1.5％);DAPD组日间采用6～8L的透析剂量,每袋透析液交换时间为3～4h,夜间干腹.观察这些患者相关临床指标包括患者的一般资料、血钙(Ca2+)、血磷(P3-)、甲状旁腺激素(PTH)以及残余肾功能.结果 两组在一般资料比较中差异无统计学意义(P＞0.05),两组在血钙(Ca2+)、血磷(P3-)、甲状旁腺激素(PTH)等方面差异均有统计学意义(P＜0.05),比较两组的超滤量以及比较透前残余肾功能与透后一年后残余肾功能差异均有统计学意义(P＜0.05).结论 行DAPD治疗的患者比经典的CAPD患者能更有效的控制钙磷代谢,并能更好的保护残余肾功能.     

32P-磷酸铬-聚 L-乳酸缓释粒子的制备及其放射性释出和生物分布

Objective The aim of this study was to prepare the 32P-chromic phosphate-poly(L-lac-tide) (32P-CP-PLLA) particles with different ratio of the materials and further examine their performance in-dex in vivo and in vitro and their intracorporeal distribution. Methods The erosion, degrading rates, de-layed release velocity and radioactivity self-absorption coefficient (RSAC) of 32P-CP-PLLA particles made from different materials were investigated and compared. After the implantation of 32P-CP-PLLA particles and the injection of 32P-CP colloids in the muscular tissues, the weight loss rate and the radioactivity release rate (RRR) of the particles were calculated. The intracorporeal distribution, radioactive half-life and bio-logical effect of 32P in the targeting sites were further studied. Statistical analysis was performed with SPSS 12.0, and one-way analysis of variance and t-test were used. Results 32P-CP-PLLA particles were of green cylinder, with regular shape and radionuclide distribution. The RSAC of the particles was of little re-lation with molecular weight of PLLA and proportional to the ratio of PLLA to CP. The extracorporeal release rate increased with the reduction of molecular weight of PLLA and with the increase of the ratio of PLLA to CP. The RRR reached peak when PLLA was 3 times of CP. The 32P-CP, released with the degradation and corrosion of the particle distributed mainly in the surrounding muscles of the particle. And the peak of per-centage activity of injection dose per gram of tissue (% ID/g) in liver, spleen and bone were 1. 7887, 1. 6401 and 1. 9470 respectively, much lower than that in the 32P-CP group (4.7523, 3.9712 and 4.3174 ; all t > 2.7, all P < 0.05). The % ID/g in other organs was much less. The radioactivity effective half-life in the targeting sites increased to about 13 d. There was widespread necrosis around the particles with no ex-istence of normal tissues among them. And no abnormality in spleen and liver was found. Conclusion As a better dosage form of pure β-particle emitter, 32P-CP-PLLA, which can increase the targeting radioactive dosage and effective half-life in the implanting sites, can be served as an potential implanting agent for onco-therapy with a better perspective.     

CCl4,黄磷,As2O3对大鼠肝脏,血液巯基含量的影响

CCl_4、黄磷可降低肝脏巯基含量,而As_2O_3对血液巯基含量降低更显著。这可能是由于CCl_4、黄磷在肝内分布多于血液,而As_2O_3在血液中的储存多于肝脏之故。     

甲状旁腺功能亢进症患者血清生化指标与99Tcm-MIBI SPECT/CT显像的相关性研究

目的 探讨甲状旁腺功能亢进症患者血清钙、磷、甲状旁腺激素（PTH）水平与⁹⁹Tc^m-MIBI显像的相关性,计算血清钙、磷和PTH的Cut-off值。方法 回顾性分析2017年9月—2019年9月经手术病理学确诊的甲状旁腺功能亢进患者234例,所有患者均于术前行甲氧基异丁基异腈（MIBI）显像和血清PTH、钙、磷等生化检查。结果 原发性（PHPT）和继发性（SHPT）甲状旁腺功能亢进者PTH水平中位数分别为210.93（122.60～529.20） pg/mL和1842.50（1342.50～2345.00） pg/mL,两组间差异有统计学意义（Z = -10.83,P = 0.000）,SHPT组显著高于PHPT组。PHPT组和SHPT组血清钙水平中位数分别为2.86（2.65～3.15） mmoL/L和2.43（2.32～2.58） mmoL/L,两组间差异有统计学意义（Z = -7.52,P = 0.000）,PHPT组显著高于SHPT组。PHPT组和SHPT组血清磷水平中位数分别为0.80（0.64～1.03） mmoL/L和2.26（1.97～2.63） mmoL/L,两组间差异有统计学意义（Z = -10.15,P = 0.000）,PHPT组显著低于SHPT组。将年龄、性别、PTH值、钙值、磷值作为自变量,MIBI显像结果作为应变量,Logistic回归分析得出PTH值为PHPT组的影响因素（OR: 1.012,95%CI：1.002～1.023）,相关性分析得出r = 0.60（P = 0.000）;SHPT组无相关因素。绘制PHPT组⁹⁹Tc^m-MIBI影像显像结果ROC曲线,对应最大曲线下面积0.91,计算Cut-off值为113.1 pg/mL。绘制PHPT组和SHPT组钙值、磷值与PTH值散点图,相关性分析得出PHPT组：钙值与PTH值具有中度相关（r = 0.64,P = 0.000）,磷值与PTH值具有低度相关（r = -0.28,P = 0.032）;SHPT组：钙值与PTH值具有低度相关（r = 0.17,P = 0.03）,磷值与PTH值无相关性（P = 0.15）。结论 PHPT组血清PTH水平与MIBI显像结果具有中度相关性,血清PTH水平越高MIBI显像阳性率越高,MIBI显像对应的分界值为113.1 pg/ml。PHPT组血清Ca水平与血清PTH水平具有中度相关性,而SHPT组血清Ca水平与血清PTH水平具有低度相关性。