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1.
    
《Developmental cell》2022,57(18):2221-2236.e5
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2.
目的:探讨鼻窦内镜术治疗鼻窦炎合并鼻息肉的临床疗效及对鼻腔通气和嗅觉功能的影响。方法:选取2014年1月至2016年6月我院收治的鼻窦炎合并鼻息肉患者80例。根据随机数字表法分为观察组和对照组,各40例。对照组给予传统摘除术治疗,观察组则行鼻窦内镜术治疗。比较两组临床疗效以及治疗前、治疗后3个月症状评分、鼻气道总阻力、嗅觉功能评分。结果:观察组治疗总有效率为95.00%,显著高于对照组的77.50%(P0.05)。治疗前两组患者鼻塞、脓涕、嗅觉障碍、疼痛及总症状评分比较无统计学差异(P0.05),治疗后3个月两组患者鼻塞、脓涕、嗅觉障碍、疼痛及总症状评分均低于治疗前,且观察组患者鼻塞、脓涕、嗅觉障碍、疼痛及总症状评分低于对照组(P0.05)。治疗前两组患者鼻气道总阻力、嗅觉功能评分比较无统计学差异(P0.05),治疗后3个月两组患者鼻气道总阻力、嗅觉功能评分均低于治疗前,且观察组低于对照组(均P0.05)。结论:鼻窦内镜术治疗鼻窦炎合并鼻息肉有利于改善患者临床症状,促进患者嗅觉功能以及鼻腔通气的恢复,是治疗鼻窦炎合并鼻息肉的有效方法。  相似文献   
3.
摘要 目的:观察老年胆总管结石患者经内镜逆行胰胆管造影术(ERCP)治疗后,炎性因子、免疫功能的变化,并分析术后并发胰腺炎的危险因素。方法:纳入2015年3月~2021年5月期间来我院接受治疗的老年胆总管结石患者250例,均接受ERCP治疗,观察治疗前后炎性因子、免疫功能的变化,记录两组一次性取石成功率、术中出血量、手术时间、住院时间及术后并发症发生率。采用多因素Logistic回归分析术后并发胰腺炎的危险因素。结果:本次研究纳入的患者一次性取石成功率为96.80%(242/250),术中出血量(16.57±1.34)ml,手术时间(46.38±5.19)min,住院时间(8.82±1.35)d。术后并发症发生率12.80%(32/250)。治疗后,患者的CD3+、CD4+、CD4+/CD8+较治疗前升高,CD8+较治疗前下降(P<0.05)。治疗后,患者的血清白介素-6(IL-6)、C反应蛋白(CRP)和肿瘤坏死因子-α(TNF-α)水平较治疗前下降(P<0.05)。按照ERCP术后是否并发胰腺炎进行分组,其中26例发生胰腺炎的患者纳为并发组,未并发胰腺炎的224例纳为未并发组。单因素分析结果显示,ERCP术后并发胰腺炎与胰管显影、性别、胆总管结石病史、体质量指数(BMI)、Oddi括约肌功能障碍(SOD)病史、ERCP手术时间、多次插管、胰腺炎病史、导丝进入胰管、阻塞性黄疸有关(P<0.05)。多因素Logistic回归分析结果显示:SOD病史、性别为女、BMI≥30 kg/m2、胰腺炎病史、ERCP手术时间≥60 min、多次插管、胰管显影是ERCP术后并发胰腺炎的危险因素(P<0.05)。结论:ERCP治疗老年胆总管结石患者,疗效显著,术中出血量少,患者术后恢复较快,但患者术后有一定的并发症发生,主要以胰腺炎为主。且术后并发胰腺炎的危险因素较多,可采取适当措施改进操作环节,减少术后胰腺炎的发生。  相似文献   
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An archeological wooden painted coffin was excavated in Tety tomb from Saqqara excavation. It belonged to the Ministry of Antiquities. This coffin was discovered in a bad state of conservation with many destroyed big and small pieces in Saqqara stores. Analyses and investigation study were performed on the ground layer of the coffin by X-ray diffraction (XRD), Energy dispersive X ray analysis (EDX) equipped with environmental scanning electron microscopy (ESEM) and Fourier transform infrared spectroscopy (FTIR). Results confirmed that the degradation factors affecting the wooden painted coffin are essentially attributed to direct effects of microbial phenomena, which have lead to many deterioration forms as: macro- and microcracks, hydrated salts, flaking, coloration, scaling and defoliation microbiological spots. Nine deteriorating fungal species were isolated from the painted and ground layers of the tested coffin. Fusarium moniliforme followed by Aspergillus flavus able to significantly solublize calcium salts as major components of the ground layer of archeological wooden coffin. Effect of ozone and Gamma sterilization on growth; lipid, tryptophan oxidation and protein, nucleic acid leakage in the most dominant toxigenic deteriorated fungal species were detected. No mycelial growth was observed at 4 ppm of ozone at all exposure times. As Gamma radiation dose increased over 250 Gy, the growth parameter gradually decreased to reach the lethal dose at 2000 Gy. The production of mycotoxins by the tested toxigenic fungi was completely disappeared under the exposure to 3 ppm and 90 min to ozone.  相似文献   
6.
摘要 目的:探讨肝硬化食管胃静脉曲张患者门静脉血栓形成及治疗后门脉高压性胃病加重的危险因素。方法:回顾性选择2019年1月至2023年12月来我院诊治的肝硬化食管胃静脉曲张患者102例,所有患者均行食管胃静脉曲张内镜下治疗,根据患者是否出现门静脉血栓将其分为两组,门静脉血栓组(n=48例)、非门静脉血栓者(54例),对比两组的实验室检查、一般临床资料、影像学检查结果,使用多因素Logistic回归分析确定肝硬化食管胃静脉曲张门静脉血栓的危险因素。根据治疗后患者是否出现门脉高压性胃病加重。将102例患者分为门脉高压性胃病加重组与无门脉高压性胃病加重组组,对比两组的一般资料、实验室检查结果。多因素Logistic回归分析确定内镜治疗后门脉高压性胃病加重的危险因素。结果:内镜下食管静脉曲张门静脉血栓形成比例为47.06%(48/102)。单因素分析结果表明,门静脉血栓形成组的脾切除史、胃底硬化剂注射史、PLT、FIB、D2、门静脉主干内径、脾脏长度、脾脏厚度、脾静脉内径明显较无门静脉血栓形成高(P<0.05);多因素Logistic回归分析表明,有脾切除史、D-二聚体、PLT、脾脏厚度、脾静脉内径增大是肝硬化食管胃静脉曲张患者门静脉血栓形成的危险因素(P<0.05)。肝硬化食管胃静脉曲张患者内镜治疗后门脉高压性胃病加重占比为29.41%(30/102),单因素分析结果表明,门脉高压性胃病加重组与无门脉高压性胃病加重组的食管静脉曲张分级、Child-Pugh分级、Hp感染、门奇静脉断流史、门静脉主干内径、脾静脉内径对比有统计学意义(P<0.05);多因素Logistic回归分析表明,食管静脉曲张分级重度、Child-Pugh分级C级、有Hp感染、有门奇静脉断流史是肝硬化食管胃静脉曲张内镜治疗后门脉高压性胃病加重的危险因素(P<0.05)。结论:有脾切除史、D-二聚体、PLT、脾脏厚度、脾静脉内径升高是肝硬化食管胃静脉曲张门静脉血栓形成的危险因素,食管静脉曲张分级重度、Child-Pugh分级C级、有Hp感染、有门奇静脉断流史是内镜治疗肝硬化食管静脉曲后张门脉高压性胃病加重的危险因素。  相似文献   
7.
Summary Cystic fibrosis (CF) involves abnormalities in mucus production and secretion of the airway. Studies of the regulation of airway mucin production and secretion has been difficult due to the lack of in vitro models of the airway epithelial cells which express functional differentiation. Because the majority of the mucin in the airway is apparently produced by the submucosal glands, we have focused our attention on the development of cell culture models of human airway submucosal glands. This report describes the propagation of CF airway submucosal gland epithelial cells which continue to express mucin production. The CF bronchus was obtained from a 31-yr-old patient who received a double lung transplant. The glands were dissected out and primary cultures prepared by the explant/outgrowth procedure. The cells were immortalized by infection with Adl2-SV40 hybrid virus. The cultures are maintained in serum-free keratinocyte basal medium supplemented with insulin (5μg/ml), hydrocortisone (0.5μg/ml), epidermal growth factor (10 ng/ml), bovine pituitary extract (25μg/ml), and antibiotics. Cultures were passaged using 0.125% trypsin in Ca+2 and Mg+2-free Hanks’, balanced salt solution. Polymerase chain reaction (PCR) analysis demonstrated that the cells were homozygous for the ΔF508 mutation. Morphologic observations showed that the cells were epithelial and were interconnected by sparsely distributed desmosomes. Their cytoplasm contained secretory-type structures including abundant Golgi, rough endoplasmic reticulum, and secretory vesicles. Immunofluorescent studies determined that all cells were positive for cytokeratins, mucin glycoconjugates, and cystic fibrosis transmembrane conductance regulator. The cultures secreted substantial amounts of mucin glycoproteins and expressed the MUC-2 mucin gene. Patch clamp experiments revealed that the cells expressed defective Cl channels which were not activated by Forskolin.  相似文献   
8.
姜海洋  李强  梁强  丁永忠  周旺宁 《生物磁学》2014,(32):6391-6394
颅底手术正随着经鼻内镜手术的发展而发生着转变。经鼻内镜手术最初开发于鼻窦手术,但其适应症已逐渐扩大到其它领域,可以用于治疗大量的疾病。经鼻内镜手术的主要优点是:它利用天然的孔道来处理大量的颅内、鼻窦病变,避免了皮肤切口、面部骨瓣切口、脑回缩等直接开颅所不可避免的后遗症。与传统的神经外科手术相比,发病率和死亡率下降,并间接减少了住院时间和管理成本。本文就经鼻内镜手术的进展进行综述。在综述中阐述了经鼻内镜手术的适应症和基本原则,以及显露、特别是重建技术的进展,这些进展要求在可接受的并发症前提下达到更广泛的切除;讨论了经鼻内镜手术的局限性,尤其是,虽然这种手术往往是“微创”,但它并不是完全没有并发症;展望了经鼻内镜手术的适应症会不断拓宽,并发症会越来越少的美好未来。  相似文献   
9.
    
The extracellular matrix of different mammalian tissues is commonly used as scaffolds in the field of tissue engineering. One of these tissues, which has frequently been studied due to its structural and biological features, is the small intestine submucosal membrane. These research are mainly done on the porcine small intestine. However, a report has recently been published about a scaffold produced from the submucosal layer of the ovine small intestine. In the present study, ovine small intestine submucosal (OSIS) was decellularized in a modified manner and its histological, morphological, and biomechanical properties were studied. Decellularization was performed in two phases: physical and chemical. In this method, a chloroform-methanol mixture, enzymatic digestion, and a constant dose of sodium dodecyl sulfate (SDS) was used in the least agitation time and its histological property and biocompatibility were evaluated in the presence of adipose tissue-derived stem cells (ADSCs); furthermore, ADSCs were isolated with a simple method (modified physical washing non-enzymatic isolation). The results were showed that the use of OSIS could be effective and operative. Mechanical properties, histological structure and shape, and glycosaminoglycan content were preserved. In the SDS-treated group, more than 90% of the native cells of tissue were deleted, and also in this group, no toxicity was observed and cell proliferation was supported, compared to the untreated group. Therefore, our results indicate that ADSCs seeded on OSIS scaffold could be used as a new approach in regenerative medicine as hybrid or hydrogel application.  相似文献   
10.
摘要 目的:研究胃炎性纤维性息肉(IFP)的临床特征及内镜下诊断和治疗情况。方法:收集2010.1.1~2021.1.1陕西省人民医院确诊的11例IFP,重点分析其超声内镜表现及临床特征,探索其内镜下治疗价值。结果:IFP多发生在胃窦,均发生于40岁以上人群,男女比例无明显差别,平均直径1.2 cm,大部分临床无症状,有时可引起出血或腹痛。超声内镜示其为粘膜下隆起,孤立、界清,表面多光滑,均起源于粘膜下层,呈低回声,界清,类圆形;内镜下粘膜挖除术治疗IFP,手术时间短,恢复快,并获得完整的标本,术后病理有助确诊。结论:胃炎性纤维性息肉多发生40岁以上人群,多为胃窦孤立的粘膜下病变,多无症状,超声内镜有助于IFP的术前精确评估,内镜下粘膜挖除术是治疗IFP一项安全有效的方法,术后病理最终确诊。  相似文献   
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