Benign leiomyoma with multiple metastases to vertebrae and calvarium: An index case with comprehensive review of endocrine targets

Neurosurgical Review - “Benign” metastatic leiomyomas (BML) are indolently growing metastatic tumors which mostly associate with uterine leiomyomas in women in reproductive ages. The...     

Lysosomal and energy enzyme activities in hypertrophied rat soleus muscle after denervation

Muscle hypertrophy was induced in the soleus muscle of young rats by tenotomy of the gastrocnemius and plantaris muscles. Three and 7 days afterwards the sciatic nerve was sectioned. The loss of weight of muscles subjected to this combined procedure three days after denervation was 30–40%. Lysosomal enzyme activities (acid phosphatase, -glucosidase, -galactosidase and N-acetyl--d-glucosaminidase) and energy enzyme activities (lactate dehydrogenase, LDH, triose-3-phosphate dehydrogenase, TPDH,d-hexokinase, HK and citrate synthase, CS) were determined 3 days after denervation, 3, 7 and 10 days after hypertrophy had been induced and 3 days after denervation of hypertrophying muscles on day 3 and 7. Normal non-operated rats of corresponding body wieght served as controls and their enzyme activities were estimated on the same day. In the course of muscle hypertrophy, the 4 lysosomal enzyme activities increased progressively. Although 3 days' denervation of control muscles did not alter lysomal enzyme activities, denervation of hypertrophying muscles greatly enhanced the activity of these enzymes. Enzymes of energy metabolism were affected to a lesser degree. The results suggest that denervation of hypertrophying muscles causes more extreme changes in muscle weight and lysosomal enzyme activities than denervation alone. The possible implications of this finding are discussed in relation to the rapid atrophy.     

气相色谱法测定紫金胶囊中麝香酮含量

目的 :建立以气相色谱法测定紫金胶囊中麝香酮含量的方法。方法 :样品用乙醚提取 ,以OV 17为气相色谱柱 ,柱温为 2 0 0℃ ,氢火焰离子化检测器 (FID) ,载气为N2 ,流速 5 0mL·min-1。测定紫金胶囊中麝香酮的含量。结果 :麝香酮在 1.5～7.5 μg范围间呈良好线性关系 ,平均回收率为10 2 .0 % ,RSD =3.1%。结论 :本方法简便、准确、重现性好 ,可作为本制剂的质量控制方法     

内耳转基因表达的实验研究

目的　了解内耳转基因表达的可行性。方法　将人复制缺陷重组腺病毒基因(Adenoviruses ,Ad ,含大肠杆菌 β 半乳糖苷酶基因LacZ基因 ,Ad5 LacZ)经豚鼠耳蜗蜗窗接种到鼓阶外淋巴后 ,观察在不同时间、不同内耳组织中LacZ基因的表达 (X Gal染色 )及Ad对豚鼠声反应 (听性脑干反应 )、听毛细胞 (扫描电镜 )的影响。结果　Ad介导的LacZ基因在内耳组织中的表达至少可持续 4周 ,其中在螺旋神经节细胞表达稳定 ,Corti器、前庭囊斑、壶腹嵴的毛细胞等也有较强的表达。Ad未对豚鼠声反应 (≤ 80 0 0Hz)造成明显的损伤 ,除耳蜗底回外 ,其余各回未见明显的毛细胞缺失。结论　腺病毒载体可成功地将LacZ基因转导致豚鼠内耳组织中 ,并且未对豚鼠声反应 (低、中频 )及听毛细胞造成明显损伤 ,这对未来的内耳基因治疗研究可能具有重要的参考价值。     

HBV 感染、家族肝癌史与 ABO 血型在低发区原发性肝癌的关系

本文研究了高、低发区５１０例ＰＨＣＨＢＶ感染、家族肝癌史及与ＡＢＯ血型的关系，结果表明：１肝癌低发区与高发区一样，合并ＨＢＶ感染的ＰＨＣ患者达８０．７４％，远多于无ＨＢＶ感染者；男性多于女性；有家族肝癌史的ＰＨＣ患者占４０．００％，且合并ＨＢＶ感染的ＰＨＣ有家族肝癌史者显著多于ＨＢＶ阴性组（Ｐ＜０．０５）；２低发区ＰＨＣ中，有家族肝癌史的Ａ型血者显著多于相应对照组（Ｐ＜０．０５）。提示我国肝癌低发区ＰＨＣ发生的最重要外因亦为ＨＢＶ感染，遗传易感性则是其内因；而有ＨＢＶ感染或有家族肝癌史者是ＰＨＣ的高危人群，且后者中的Ａ型血者更为易患，对这一人群需加强监测，警惕ＰＨＣ的发生。     

实验性脑损伤后脑组织内腺苷、肌苷含量的变化及其意义

研究大鼠急性脑损伤后腺苷含量变化及其生代代谢。方法：采用大鼠液压脑损伤模型,用高效液相色谱法测定大鼠脑损伤前后脑皮质内腺苷和肌苷含量。结果：大鼠脑损伤后１０ｍｉｎ,伤侧大脑皮质内腺苷含量即明显升高,与对伤后３０ｍｉｎ升至最高值,伤后２ｈ腺苷含量恢复正常水平。结论腺苷参与继发性脑损伤后的病理生理过程。     

Focal cerebral ischemia alters the spatio-temporal properties, but not the amount of locomotor activity in mice

Cerebral ischemia induces hyperlocomotion in gerbils, and sensorimotor and cognition dysfunctions in rodents ; however little is known about the spatio-temporal organization of locomotor activity after ischemia. In this study, we continuously （22 h） assessed the spatio-temporal organization of locomotor activity in focal cerebral ischemic mice in an open field with feeding and drinking supplies. To observe the spatio-temporal changes,     

热性惊厥对大鼠情感行为及学习记忆的影响

【目的】　探讨热性惊厥对大鼠情感行为及学习记忆能力的影响。　【方法】　 3 6只雄性SD (Spraque Dawley)大鼠随机分为热性惊厥组 (febrileseizuresgroup ,FS) ,发热对照组 (febrilecontrolgroup ,FG)及正常对照组 (nor malcontrolgroup ,NG)。观察各组大鼠在旷场试验 (openfieldtest ,OFT)、避暗试验 (passiveavoidancetest,PAT)以及在Morris水迷宫 (Morriswatermaze ,MWM )试验中情感行为及学习记忆能力的改变。　【结果】　FS组大鼠与NG、FG组相比 :在OFT中穿格得分分值 ( 3 7.48± 7.0 9)降低 ,后肢性站立的次数 ( 12 .11± 4.41)减少 ,排出粪便粒数 ( 10 .62±2 .3 2 )增多 ,差异有非常显著性 (P <0 .0 1) ;在PAT中 ,FS组大鼠犯错次数 ( 4 .0 2± 1.2 9)增加 ,且记忆潜伏期 [( 169.71± 10 3 .2 2 )秒 ]缩短 ,差异有非常显著性 (P <0 .0 1) ;在Morris水迷宫试验中 ,FS组大鼠搜寻站台的逃逸潜伏期明显延长 ,差异有非常显著性 (P <0 .0 1)。　【结论】　多次热性惊厥发作可使大鼠的情感行为和学习记忆能力受损     

家兔颈动脉内膜损伤后血管平滑肌细胞表型转化及p38的表达变化

目的观察动脉内膜损伤后血管平滑肌细胞(VSMC)表型转化及其与p38表达的关系。方法分别用HE染色、免疫组化和免疫印迹(W estern b lot)方法检测家兔假损伤组(S组)和损伤组损伤后不同时间点血管形态学改变及血管壁中增殖细胞核抗原(PCNA)、平滑肌α肌动蛋白(SMα-actin)和p38蛋白表达的变化。结果⑴内膜损伤后1 d血管中膜管腔侧、3 d管腔内表面可见增殖的VSMC,5~7 d新生内膜(NI)形成并逐渐增厚,14~35 d NI进行性增厚。各组中膜均有增殖的VSMC向腔面集聚。⑵S组动脉中膜VSMC及内皮细胞PCNA为阴性。中膜于损伤后1~14 d,NI于5~14 d PCNA阳性细胞率逐渐增加,14 d达高峰,28 d后开始逐渐减少,且NI阳性率略高于中膜。⑶S组动脉中膜SMα-actin表达为阳性,内皮细胞为阴性。SMα-actin阳性面积于损伤后1 d开始减少,3 d最为明显,5 d后开始逐渐增加,NI阳性表达略低于中膜。⑷S组动脉中膜p38较少或无表达,损伤后1~35 d呈持续高表达,以3~14 d最为明显,NI阳性表达略高于中膜。损伤后p38表达变化与PCNA表达变化呈正相关,且早于SMα-actin表达减少。结论内膜损伤后VSMC增殖能力与其表型转化密切相关,p38参与了损伤后VSMC表型转化的信号转导。