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971.
实验性附睾淤积症引起家犬附睾起始部主细胞超微结构异常改变,但较附睾体部所见为轻;经超声波处理后(功率0.75W/cm~2,每日一次,每次8min,连续7日)则见其明显改变、或完全恢复,且未造成附睾起始部主细胞新的损伤。本实验结果在与附睾体部主细胞相应变化进行比较后,发现由于附睾淤积症对附睾管不同部位的影响是不同的,因而这种形态和功能均已不同程度改变了的附睾不同部位的主细胞对超声波作用的反应也各不相同,这除因主细胞功能状态不同外,尚与超声波声场的不均匀有关,提示探寻超声波治疗最适宜的量不仅必要,而且是有可能找到的。 相似文献
972.
In this study, the anti-tumour activity of selenium-protein polysaccharide (SPP), a water extract of the rich selenium Agaricus blazei, was tested both in vivo and in vitro. The results of in vivo experiments show that SPP at doses of 50 and 100 mg/kg inhibits proliferation of implanted Sarcoma 180 by 22 and 37.69%, respectively, and promotes lymphocyte transformation and natural killer (NK) cells activity in tumour bearing mice. During the in vitro experiment, we treated the tumour and non-tumour bearing mice with SPP, and prepared serum treated with SPP (SerumSPP). The results show that SerumSPP, whether from tumour or non-tumour bearing mice, significantly inhibits K562 cells proliferation and induces their apoptosis, and also significantly increases caspase-3 activity of K562 cells. However, the difference in anti-tumour activity of SerumSPP between tumour and non-tumour bearing mice is significantly different (p<0.01). The results, according to the studies both in vivo and in vitro, imply that SPP extracted from rich selenium A. blazei can inhibit growth of implanted Sarcoma 180 and promote lymphocyte transformation and NK cells activity in vivo. Additionally, SerumSPP can inhibit proliferation and cause apoptotic morphological changes and the fragmentation of internucleosomal DNA, and increase caspase-3 activity of K562 cells in vitro, which indicates that apoptosis of K562 cells induced by SerumSPP may be related to up-regulation of caspase-3. 相似文献
973.
本文收集了我省十年(1974—1983)来诊断为恶性淋巴瘤的病例,按免疫功能分类复查了全部切片,最后确诊为非何杰金氏恶性淋巴瘤(NHL)528例,进行了分析。本组NHL在首发部位、类型分布等方面与国内外有所不同。本组NHL首发于淋巴结外的占64.02%,明显高于国内其它省、市,而滤泡型淋巴瘤则低于国内多数地区。T细胞淋巴瘤占14.84%,较国内、外均低。并提出提高制片质量和广泛开展及应用免疫学技术的重要性。 相似文献
974.
A.J. Greenshaw 《Brain research bulletin》1986,16(5):759-761
A BASIC computer program is described which is useful for calculating filling concentrations for ALZET osmotic mini-pumps employed in studies of chronic drug and hormone administration. After the user has entered the required daily dose, the pump parameters and the animals' weights, the program gives the following information: The total quantity of the drug or hormone required for the experiment; the minimum volume and concentration of solution, allowing a 10% margin for error, to serve as a standard that, when diluted, will fill all pumps in the experiment; individual volumes of this solution that, when diluted to a constant volume will yield the required concentrations to fill each of the respective pumps. Use of this program will ensure reliably accurate and very rapid preparations of solutions for mini-pump use. 相似文献
975.
29例复发性甲状舌管囊肿和瘘中.男性20例,女性9例。复发次数1~4次,以2年或2年以内复发居多。作者对复发的有关因素进行了讨论,并且提出术中注射亚甲蓝显示瘘管,以利完全切除。 相似文献
976.
我院现有后勤职工72名,占全院总人数的7%,其中党员12名。党员占后勤职工16%。笔者自担任后勤分管领导以来,一直重视狠抓后勤党员队伍建设,充分发挥其先锋模范作用,增强带头示范效应。提升后勤队伍凝聚力,使得后勤队伍的工作积极性得到较大提高,后勤部门的服务效率、保障功能和职工满意度都取得新的突破。[第一段] 相似文献
977.
使用胶质银染色技术,对28例良性腹水和26例恶性腹水进行核仁组成区(AgNORs)形态定量研究。结果表明:良性腹水间皮细胞与恶性腹水癌细胞二者在AgNORs数目、形态、大小及核内分布方面均存在显著差异。另外,对5例临床上疑诊恶性腹水而常规脱落细胞学(HE)染色阴性或未肯定者进行上述定量分析,确定腹水良恶性质,结果与组织病理学诊断相一致。提示该技术在一定程度上可弥补常规脱落细胞形态学之不足。 相似文献
978.
采用无抗凝作用剂量肝素皮下注射治疗小儿肾病综合征25例,观察了近期疗效与12~24月后对皮质激素或环磷酰胺(CTX)治疗反应的关系.结果表明,近期对肝素治疗显效但复发以及有效者,今后用激素或CTX治疗均可达完全缓解,无效者则效果较差.本文结果表明,肝素治疗的近期疗效可用于预测肾病患儿的远期预后. 相似文献
979.
The surface of the ovary has been found to be composed of two types of epithelial cells called A and B cells which are found in their own respective zones, the A and B zones. A quantitative study was undertaken to determine the mean cell volumes and cell ultrastructure. Ovarian biopsies were taken from six women and A and B zones, having been identified by scanning electron microscopy, were re-embedded for transmission electron microscopy. Stereological measurements using point sampled intercepts were made on vertical sections and showed that B cells are significantly larger than A cells. The volume weighted mean cell volumes of the A and B cells were 237.3 microns 3 and 676.8 microns 3 respectively. The volume fractions of the nucleus and mitochondria were similar in the two cell types. Although the vesicle content of each type was similar, a large variation between cases made the interpretation difficult. The stereological tools used in this study proved to be easy and efficient estimators of surface cell ultrastructure and give an important direction for ultrastructural research. 相似文献
980.
The objective of this study was to establish to what extent muscle, cutaneous, and joint afferents alter the excitability of spinal and cortical motor neurons. This question was examined by studying the impact of electrical stimulation of the second and third digits, the median nerve at the wrist, and the recurrent thenar motor branch on the F/H and magneto-electrical cortical motor responses (MEPs) of the thenar muscles. The firing frequencies of single F/H motor unit action potentials were unaltered by the foregoing conditioning peripheral stimuli. MEPs conditioned by motor threshold stimulation of the median nerve at the wrist or the recurrent motor branch were significantly increased in size at conditioning to test intervals of 50 to 80 milliseconds. No significant change in MEP size resulted from conditioning stimulation of the digital nerves. We conclude that muscle afferents were primarily responsible for the increase in MEP size. Conditioning stimuli may allow examiners to assess central motor conduction where it would otherwise be impossible. 相似文献