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1.
凋亡或细胞程序性的死亡是一种细胞自杀机制,对脊椎动物和无脊椎动物的生长发育和体内稳态起着重要的作用。凋亡抑制剂(inhibitor of apoptosis,IAP)蛋白作为抗凋亡调控剂,通过对不同刺激的应答来阻止细胞死亡。IAP在人类恶性肿瘤中高水平表达,并已成为癌症新疗法发展的诱人靶目标。  相似文献   
2.
甲状旁腺激素激动剂特立帕肽   总被引:1,自引:0,他引:1  
韦佳 《药学进展》2004,28(10):476-477
骨质疏松症是一种以低骨量和骨组织退化为特征的最常见的代谢性骨病。这种疾病将导致大量骨质丢失,骨骼脆性增加,容易发生骨折。常见骨折部位是髋骨、脊椎骨和腕骨。市场上多数治疗骨质疏松症的药物,如雌激素、双磷酸盐类和降血钙素均属骨吸收抑制剂。而其他一些药物如氟化物、甲状旁腺激素(PTH)是骨形成促进剂。  相似文献   
3.
韦佳 《医疗装备》2014,27(11):136-137
骨髓增生异常综合征(myelodysplastic syndrome,MDS)是一组异质性疾病,起源于造血干细胞,以病态造血,高风险向急性白血病转化为特征,表现为难治性一系或多系细胞减少的血液病[1]。MDS要求避孕,所以合并妊娠少见,国内外病例报告仅50余例[2]。  相似文献   
4.
Objective:To evaluate the improvement of Kangshuai Yizhi FormulaⅠ(抗衰益智方Ⅰ,KYFⅠ)on the learning and memory dysfunction in mice,and on the mechanism of the hippocampal cholinergic system and the nervous system of monoamine which are closely related to learning and memory function.Methods:Mice in the low-,middle-,and high-dose KYFⅠgroups were given low-,middle-,and high-dose KYF,respectively, by gastrogavage for 35 successive days.Animals in the control group and the model group were treated with distilled water.The acute learning and memory dysfunction model was established by injection of scopolamine from day 31,and Morris water maze was used to assess the behavior performance of scopolamine-induced model mice for five days.The activities of acetylcholinesterase(AChE),choline acetyl transferase(ChaT) and the content of monoamine neurotransmitters in hippocampus were measured.The activity of monoamine oxidase(MAO)in hippocampus and serum was also detected.Results:(1)Compared with the control group,the mean escape latency was shortened,and the frequency across the platform and the staying time at the platform area on the 5th day were decreased in the model group by Morris water maze test.The activities of AChE and MAO were increased,and the ChaT activity and monoamine neurotransmitter content were decreased as well.(2) The escape latency for 4 days in the low-,middle-,and high-dose KYFⅠgroups was significantly shortened than that in the model group,with the shortest latency in the high-dose KYFⅠgroup(P〈0.05,P〈0.01).The frequency across the platform was significantly increased and the staying time at the platform was significantly prolonged in the middle-and high-dose KYFⅠgroups(P〈0.05,P〈0.01).(3)As compared with the model group,the activity of ChaT and the content of monoamine neurotransmitters in the hippocampus were significantly increased, and the activities of AchE and MAO were significantly decreased in the hippocampus in the high-dose KYFⅠgroup(P〈0.01).Conclusions:High-dose KYFⅠcan significantly improve the learning and memory dysfunction induced by scopolamine in mice.Its mechanism may be related to improving the central cholinergic system and regulating the hippocampal monoamine neurotransmitters.  相似文献   
5.
目的 探讨SOX10、潘氏细胞发育及分泌防御素-5与先天性巨结肠相关性小肠结肠炎的关系.方法 收集50例先天性巨结肠病变肠管,根据术前是否发生小肠结肠炎分为HAFC组(n=14)和HD组(n=36),并以20例正常结肠标本作对照组.采用免疫组织化学方法观察结肠中防御素-5蛋白质表达、潘氏细胞发育情况以及SOX10蛋白质表达情况.采用实时荧光定量PCR技术检测防御素-5 mRNA及Sox 10 mRNA表达情况.结果 防御素-5在正常肠管中不表达,HAEC组和HD组在肠腺隐窝基底处呈不同程度阳性表达.但前者阳性区域平均光密度值明显增高(0.33±0.039比0.10±0.031,P<0.05),HAEC组防御素-5mRNA亦呈显著增高趋势(2.72±0.80比0.78±0.21,P<0.05).对结肠组织同层切片进行潘氏细胞特异性产物溶菌酶免疫组化染色发现,对照组肠管中除1例存在弱阳性外其他均无阳性表达.HD组和HAEC组结肠中同样在隐窝基底处存在溶菌酶阳性细胞,可鉴别为化生的潘氏细胞,但HAEC组在发生率(78.6%)和细胞个数(2.97±0.80)明显高于HD组(27.8%,0.43±0.85)(P<0.05).SOX10免疫产物主要在结肠神经节细胞膜及胞浆中表达,对照组、HAEC组、HD组阳性区域的平均光密度值递减(0.75±0.041,0.61±0.048,0.35±0.025),差异具有统计学意义(P<0.05),同时RT-PCR检测显示Sox10 mRNA在各组中的表达与蛋白质水平呈平行结果.结论 SOX10可能通过影响潘氏细胞发育及分泌防御素-5在先天性巨结肠相关性小肠结肠炎的发生发展中起一定作用.
Abstract:
Objective To study the expression of SOX10 and Human α-defensins-5(HD-5 )in Hirschsprung's disease associated enterocolitis(HAEC) and expore the possible relationship between SOX10 and HAEC.Methods Fifty pathological colons of Hirschsprung's disease (HD) were divided into HAEC group (n = 14) and HD group(n = 36) according to the presence of preoperative enterocolitis,Twenty normal colons as control group.The protein and mRNA expression of HD-5 and SOX 10 were measured by immunohistochemical staining and real-time quantitative PCR Results Normal colons did not express HD-5 but positive expression of HD-5 was detected at the base of the crypts of Lieberkuhn in HAEC and HD groups in different degree.The mean optical density of HD-5 immunohistochemical staining (0.33 ± 0.039 vs 0.10 ± 0.031 )and HD-5 mRNA expression (2.72 ± 0.80 vs 0.78 ± 0.21 ) in HAEC group was apparently higher than those in HD group(P<0.05).The expression of lysozyme,a specific product by Paneth Cell,on sequential sections was negative in control group except one sample.In HAEC group and HD group,positive expression of lysozyme can be seen in the crypts of Lieberkuhn,where the cells can be identified as Metaplastic Paneth cell,but the incidence (78.6% vs 27.8%) and the number of cells 2.97 ± 0.80 vs 0.43 ± 0.85) in HAEC group were obviously higher than those in HD group(2.97 ± 0.80 vs 0.43 ± 0.85) (P<0.05).SOX10 was mainly located in the plasmalemma and cytoplasm of ganglion cell and its mean optical density in control group (0.75 ±0.041 ),HAEC group (0.61 ± 0.048)and HD group(0.35 ± 0.025) were decrement,the difference between three groups were statistically significant (P<0.05).Meanwhile,Sox10mRNA detected by real-time quantitative PCR indicated the parallel result.Conclusions SOX10 may be an important factor in the pathogenesis and development of HAEC.  相似文献   
6.
君臣佐使理论是方剂配伍研究的重要内容,本文以古今医籍文献为线索,系统探讨君臣佐使理论的源流演变和发展变化,为推进君臣佐使理论运用于古方学习、临床处方和新药研制奠定理论基础.  相似文献   
7.
大部分调控细胞死亡的蛋白都有一个与细胞死亡不相关的重要功能,细胞色素c也不例外。在正常细胞中,细胞色素c是唯一位于线粒体膜间隙,并与线粒体内膜松弛结合的正铁血红蛋白,在氧化呼吸链复合物Ⅲ和Ⅳ之间发挥传递电子作用。当细胞凋亡时,细胞色素C的亚细胞定位和功能完全改变。  相似文献   
8.
9.
【目的】观察调和阴阳针刀法治疗膝骨关节炎(KOA)的临床疗效。【方法】将88例KOA患者随机分为针刀组和假针刀组,每组各44例。2组患者均给予吲哚美辛巴布膏外贴的常规治疗,在此基础上,针刀组患者给予调和阴阳针刀法治疗,假针刀组患者给予假针刀手法治疗。每周治疗1次,共治疗2周,并于治疗结束后的第3个月随访1次。观察2组患者治疗前、治疗1周后及治疗后3个月随访时西安大略麦克马斯特大学骨关节炎指数(WOMAC)评分和疼痛视觉模拟量表(VAS)评分的变化情况。【结果】(1)治疗1周后和治疗后3个月随访时,2组患者的疼痛VAS评分均较治疗前降低(P<0.05),且针刀组患者在治疗1周后及治疗后3个月随访时的疼痛VAS评分均低于假针刀组,差异均有统计学意义(P<0.01)。(2)治疗1周后和治疗后3个月随访时,2组患者WOMAC量表的疼痛、僵硬和关节功能评分及总评分均较治疗前明显降低(P<0.05),且针刀组患者在治疗1周后和治疗后3个月随访时WOMAC量表的疼痛和关节功能评分及总评分均低于假针刀组,差异均有统计学意义(P<0.05或P<0.01),而2组患者WOMA...  相似文献   
10.
目的:观察抗衰益智方Ⅰ(KYFⅠ)对正常小鼠学习记忆能力和中枢胆碱乙酰转移酶表达的影响。方法:各组小鼠除正常对照组灌服双蒸水外,中药组(分为低、中、高剂量组)灌服相应剂量KYFⅠ,连续灌胃40 d。从第35 d起灌胃结束后进行Morris水迷宫测试,连续5 d。水迷宫测试结束后检测小鼠海马组织胆碱乙酰转移酶(ChAT)和乙酰胆碱酯酶(AChE)的活性,并分别用免疫组化和Western blotting方法观察小鼠海马ChAT阳性神经元的数量变化以及ChAT蛋白的表达。结果:与对照组比较,KYFⅠ高剂量组小鼠水迷宫学习成绩较好;同时,KYFⅠ高剂量组小鼠海马组织内ChAT活性明显增高,AChE活力降低;免疫组化和Western blotting结果显示KYFⅠ高剂量组小鼠海马CA1区ChAT阳性神经元数量增加,ChAT蛋白表达升高。结论:高剂量KYFⅠ可以提高正常小鼠学习记忆能力,其机制可能与KYFⅠ抑制小鼠海马组织AChE活性,提高ChAT活性、升高ChAT蛋白的表达,从而促进脑内乙酰胆碱(ACh)的合成有关。  相似文献   
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