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61.
参芪胶囊的鉴别与含量测定方法研究 总被引:1,自引:0,他引:1
苏健 《中药新药与临床药理》1994,5(1):39-42
对参区胶囊中黄芪、人参、当归、知母、黄连等味药进行了薄层鉴别。并对黄连中小檗碱进行了薄层光密度法测定,方法灵敏,重现性好,回收率100%,相对标准偏差RSD%=2.0(n=6)。 相似文献
62.
C Y Chai W C Wu S Wang C K Su Y F Lin C T Yen J S Kuo M J Wayner 《Brain research bulletin》1992,29(1):15-26
The effects of electrical stimulation and microinjection of sodium glutamate (0.5 M) in the sympathetic pressor areas of the dorsal medulla (DM), ventrolateral medulla (VLM), and parvocellular nucleus (PVC) on the knee jerk, crossed extension, and evoked potential of the L5 ventral root produced by intermittent electrical stimulation were studied in 98 adult cats anesthetized with chloralose and urethane. During electrical and glutamate stimulation of these pressor areas, in addition to the rise of systemic arterial blood pressure marked inhibition of the spinal reflex was produced, indicating presence of neuronal perikarya responsible for these actions. Mild to moderate augmentation of spinal reflexes was also observed during brain stimulation but only in a few cases. The magnitude of the somatic effects among the pressor areas of the VLM, DM, and PVC subsequent to glutamate activation was about the same. Induced spinal reflex inhibition, independent from the baroreceptor and vagal influence, remained essentially unaltered after acute midcollicular decerebration. The inhibition was also observed in cats decerebellated 8-10 days in advance. The inhibition was not affected after bilateral electrolytic- or kainic-acid-induced lesions in the paramedian reticular nucleus (PRN). On the contrary, PRN-induced spinal reflex inhibition was attenuated after bilateral lesions in the DM or VLM. Data suggest that there coexists neuronal subpopulations in the VLM, DM, and PVC that can affect both the sympathetic pressor systems and spinal reflexes. 相似文献
63.
报告接受彩色多普勒超声心动图检查的老年患者162例,其中75例有不同程度的主要动脉瓣关闭不全(Ar)。老年(Ar)的病因构成与中,老年前期者明显不同,主动脉,瓣钙化及原因不明者的比例占多数(67%)。主动脉瓣钙化者Ar程度多较重。主动脉瓣钙化及原因不明Ar患者的其他三个瓣膜返流检出率及和程度均明显高于无Ar的老年患者。表明多瓣膜退行性病变是此类Ar患者的原因之一。 相似文献
64.
65.
Talipes valgus, mostly resulted from poliomyelitis, of 44 feet in 43 children, aged 4 to 12 years, were treated by Grice extra-articular arthrodesis of the subtalar joint, and on 36 of them tendon transfer was done as well at the same time. The result in all of them, after a period of 15.3 years (ranging 5 to 23 yrs.), was found satisfactory in 32 feet (72.7%), and unsatisfactory in 12 (27.3%). Eight of the latter were found to be due to secondary varus deformity, a consequence of imbalance of muscle power following medial transfer of peroneal tendon (s). It is emphasized that in correcting foot deformity, slight valgus is receptible while over correction (varus) must be avoided. It is also found that after subtalar stabilization, traumatic osteoarthritis of midtarsal and ankle joints developed more frequently in patients who had better limb function than in those whose limbs had functioned much less. 相似文献
66.
Chun-Ming Shih Shing-Jong Lin Yea-Yang Su Chun-Che Shih 《Journal of controlled release》2005,102(3):539-549
Usually, a drug is loaded onto the metallic surface of a medical device by applying a polymer layer containing the drug. Unfortunately, polymer coatings on the metallic surface may exhibit numerous problems after implantation, such as late thrombosis, inflammation, and restenosis. Current research was conducted to investigate whether a suitable oxide layer can be used as a polymer-free platform for drug loading, especially for cardiovascular stents. The loading of heparin onto, as well as eluting of heparin from, the amorphous oxide film on the 316LVM stainless steel wire was confirmed by experimental studies using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), electron spectroscopy for chemical analysis (ESCA), high-performance liquid chromatography (HPLC), and activated clotting time (ACT). Evidence shows that amorphous oxide can be an ideal substitute for the polymer coating of drug-loaded stents to minimize metallic corrosion, inflammation, late-thrombosis, and restenosis. 相似文献
67.
Four cases of baclofen intoxication are reported, with a review of 33 cases from the literature. Analysis of these 37 cases suggests that there are two types of baclofen intoxication syndrome. Patients with acute intoxication present with four major clinical manifestations: encephalopathy (disturbance of consciousness and/or seizure), respiratory depression, muscular hypotonia, and generalized hyporeflexia. Patients with chronic intoxication present with hallucinosis, impaired memory, catatonia, or acute mania. The acute intoxication syndrome has a faster onset, shorter duration, more severe clinical manifestations, and higher incidence of seizures than the chronic intoxication syndrome. Baclofen intoxication, although it may cause grave encephalopathic manifestations and electroencephalographic findings, has a benign outcome if actively managed. 相似文献
68.
69.
将2例HBV_2患者血清HBsAg纯化,分析了HBV_2的HBsAg氨基酸组成,并与分子量为630198道尔顿HBV_1的HBsAg三种多肽氨基醚组成比较。实验发现,HBV_2与HBV_1的HBsAg的氨基醚组成有较大区别,且区别指数均在13以上。提示HBV_1和HBV_2的HBsAg在一级结构上存在较大差异;HBV_2可能系一新的乙型肝炎病毒,也可能系由于HBV_1S区核苷酸突变所致的变异株。 相似文献
70.
叶内型肺隔离症致咯血的栓塞治疗 总被引:2,自引:0,他引:2
目的探讨叶内型肺隔离症患者咯血的栓塞治疗效果。方法结合文献复习,回顾性分析6例叶内型肺隔离症患者血管造影表现,并对畸形动脉行栓塞治疗。结果6例叶内型肺隔离症患者血管造影显示畸形动脉7支,表现为粗大、迂曲的体循环血管影;在毛细血管期可见隔离肺叶染色及引流静脉早显;静脉期显示引流静脉(肺静脉)。6例患者均进行畸形血管栓塞治疗,临床止血总有效率100%,随访1a均未复发。结论畸形血管栓塞术对叶内型肺隔离症致咯血的治疗,安全有效。 相似文献