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Background  Nucleophosmin plays a critical role in embryonic development. This study aimed to examine the expression pattern of nucleophosmin in glandular epithelium of human endometrium during the menstrual cycle.
Methods  Endometrial tissues used for this study were obtained from 46 non-pregnant patients who underwent hysterectomy which had been performed to treat benign diseases. Nucleophosmin expression was assessed by in situ hybridization and immunohistochemistry.
Results  At the early-, mid- and late-proliferative phase, nucleophosmin mRNA was highly expressed in glandular epithelium of human endometrium. At the secretory phase, the expression of nucleophosmin mRNA was reduced in glandular epithelium in early-secretory phase, and the expression in mid- and late-secretory phases was not detected. Similarly, nucleophosmin protein was strongly expressed in endometrial glands throughout the proliferative phase, but was gradually reduced during secretory phase.
Conclusion  Nucleophosmin mRNA and protein are expressed in glandular epithelium of human endometrium throughout the menstrual cycle.
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Background  Aspergillus fumigatus (A. fumigatus) is a ubiquitous saprophytic fungus responsible for the majority of invasive mold infections in patients undergoing chemotherapy, organ transplantation or with persistent neutropenia. This study aimed to determine the role of E-cadherin for adhesion and endocytosis of A. fumigatus blastospores in the human epithelial cell line A549.
Methods  A. fumigatus blastospores were incubated with the total protein of A549 to investigate the binding of E-cadherin and blastospores followed by an affinity purification procedure. After establishing the adhesion model, the adhesion and endocytosis of A. fumigatus blastospores by A549 cells were evaluated by down-regulating E-cadherin of A549 cells using blocking antibody or small interfering RNA (siRNA).
Results  E-cadherin was adhered to the surface of A. fumigatus blastospore. Adhesion and endocytosis of the blastospores were reduced by blocking or down-regulating E-cadherin in A549 cells.
Conclusions  E-cadherin is a receptor for adhesion and endocytosis of A. fumigatus blastospores in epithelial cells. This may open a new approach to treat this fungal infection.
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Background  Cisplatin (DDP) is one of most effective and most commonly used therapeutic agent in treating tumors, it can accumulate in the kidney and lead to acute renal failure. MicroRNA-181a can induce cell apoptosis by suppressing the expression of Bcl-2 family. In the present study, we investigated the role of microRNA-181a in the apoptosis of tubular epithelial cell induced by DDP.
Methods  HK-2 cells were cultured, transfected with microRNA-181a inhibitor for 48 hours, and stimulated with 50 µmol/L cisplatin for 24 hours. MicroRNA-181a expression was analyzed by real time PCR, and cell apoptosis was detected by flow cytometry. Moreover, Bcl-2 and Bcl-2-associated X protein (Bax) expression were measured by Western blotting.
Results  MicroRNA-181a expression significantly down-regulated in cells transfected with microRNA-181a inhibitor, compared with that in untransfectd cells (21.19±2.01 vs. 38.87±1.97, P <0.05). Cell apoptosis induced by DDP significantly decreased in cells transfected with MicroRNA-181a inhibitor. Compared with DDP treated cells alone, Bcl-2 expression strikingly was up-regulated and Bax expression was down-regulated in cells transfected with microRNA-181a inhibitor.
Conclusion  One pathway of DDP induces apoptosis of tubular epithelial cell by suppressing Bcl-2 expression is achieved by regulating the target gene of MicroRNA-181a.
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Background  Loss of carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) expression is an adverse prognostic factor in hepatocellular carcinoma (HCC). The purpose of this study was to investigate the expression of CEACAM1 and its effect on relapse-free survival (RFS) following liver transplantation (LT) for HCC.
Methods  Expression of CEACAM1 was immunohistochemically detected in HCC specimens from 48 patients. The relationship between CEACAM1 expression and clinicopathologic variables, as well as tumor recurrence, was further analyzed.
Results  Of the 48 HCC specimens, membranous CEACAM1 expression was detected in 25 specimens and cytoplasmic CEACAM1 expression was detected in 19 specimens. Four specimens had loss of CEACAM1 expression. Loss of membranous CEACAM1 expression was significantly associated with tumor size, tumor number, and serum α-fetoprotein levels (all P <0.05). Patients with loss of membranous CEACAM1 had significantly poorer RFS than patients with membranous expression, determined via Kaplan-Meier analysis (P=0.027). Multivariate analysis revealed that loss of membranous CEACAM1 expression might be an independent prognostic factor of RFS for HCC patients after liver transplantation (P=0.037).
Conclusion  Loss of membranous CEACAM1 expression in HCC was closely associated with aggressive tumor biology and might be a relapsing biomarker of HCC treated with LT.
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Background  Progranulin is a newly discovered 88-kDa glycoprotein originally purified from the highly tumorigenic mouse teratoma-derived cell line PC. Its expression is closely correlated with the development and metastasis of several cancers. However, no immunohistochemical evidence currently exists to correlate progranulin expression with clinicopathologic features in breast carcinoma biopsies, and the role of progranulin as a new marker of metastatic risk and prognosis in breast cancer has not yet been studied. The aim of this study was to investigate the clinicopathologic and prognostic implications of progranulin expression in breast carcinoma and its correlation with tumor angiogenesis.
Methods  Progranulin expression was determined immunohistochemically in 183 surgical specimens from patients with breast cancer and 20 tissue samples from breast fibroadenomas. The tumor angiogenesis-related biomarker, vascular endothelial growth factor was assayed and microvessel density was assessed by counting vascular endothelial cells in tumor tissues labeled with endoglin antibody. The relationship between progranulin expression and the clinicopathologic data were analyzed.
Results  Progranulin proteins were overexpressed in breast cancer. The level of progranulin expression was significantly correlated with tumor size (P=0.004), lymph node metastasis (P <0.001) and TNM staging (P <0.001). High progranulin expression was associated with higher tumor angiogenesis, reflected by increased vascular endothelial growth factor expression (P <0.001) and higher microvessel density (P=0.002).
Conclusion  Progranulin may be a valuable marker for assessing the metastasis and prognosis of breast cancer, and could provide the basis for new combination regimens with antiangiogenic activity.
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Background  Identification of potential serum biomarkers of osteosarcoma to aid in its early diagnosis and in the discovery of possible therapeutic targets is an area of increasing interest.
Methods  Two-dimensional difference-in-gel electrophoresis was used to assess multiple serum samples in patients with osteosarcoma. In addition, differential expression of protein biomarkers was characterized in osteosarcoma serum by using matrix-assisted desorption/ionization time-of-flight mass spectrometry coupled with database interrogation. Serum samples from four individuals with osteosarcoma and four age- and sex-matched healthy control subjects were compared.
Results  Fifty-eight significant protein spot features in the osteosarcoma sera were found. These spot features were excised, digested with trypsin, and analyzed with mass spectrometry. Gelsolin was down-regulated only in osteosarcoma. Furthermore, Western blotting and enzyme linked immunosorbent assay (ELISA) confirmed decreased levels of gelsolin in the osteosarcoma serum samples.
Conclusions  These results indicated that gelsolin might have great potential as a biomarker of osteosarcoma and as a potential target for gene therapy.
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Background In hypertrophic scar tissue, no sweet gland and hair follicle exist usually because of the dermal and epidermal damage in extensive thermal skin injury, thus imparing regulation of body temperature. This study was designed to reveal the morphological and distributional characteristics of the sweat glands in normal skin and hypertrophic sear obtained from children and adults, and to study the possible interfering effects of the sear on regeneration of the sweat gland after burn injury.Methods Biopsies of hypertrophic sear were taken from four children (4 - 10 years) and four adults (35 -51 years). Normal, uninjured full-thickness skin adjacent to the sear of each patient was used as control. Keratin 19 (K19) was used as the marker for epidermal stem cells and secretory portion of the sweat glands, and keratin 14 (K14) for the tube portion, respectively. Immunohistochemical and histological evaluations were performed.Results Histological and immunohistoehemical staining of skin tissue sections from both the children and adults showed K19 positive cells in the basement membrane of epidermis of normal skin. These cells were seen only single layer and arranged regularly. The secretory or duet portion of the eccrine sweat glands was situated inthe dermis and epidermal layer. However, in the sear tissue, K19 positive cells were scant in the basal layer,and the anatomic location of the secretory portion of sweat glands changed. They were located between the border of the sear and reticular layer of the dermis. These secretory portions of sweat glands were expanded and were organized irregularly. But a few K14 positive cells were scattered in the sear tissues in cyclic form.Conclusions There are some residual sweat glands in sear tissues, in which the regeneration process of active sweat glands is present. Possibly the sweat glands could regenerate from adult epidermal stem cells or residual sweat glands in the wound bed after burn injury.  相似文献   

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目的探讨皮肤汗腺受损后骨髓间充质干细胞对其的修复效果。方法大鼠骨髓间充质干细胞体外分离、培养、标记。机械损伤大鼠脚掌汗腺,干细胞治疗组于创面周围皮下注入MSCs,对照组注射相同剂量PBS,分别比较两组的创面愈合率及再生上皮的厚度,观察MSCs参与受损汗腺修复的情况。结果7d时干细胞治疗组的创面愈合率及14d时的表皮再生厚度均优于对照组(P〈0.05);BrdU标记的MSCs参与了损伤汗腺导管部的修复。结论骨髓间充质干细胞有利于创伤皮肤的修复并可能参与损伤汗腺的修复。  相似文献   

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The major adnexal structures of the skin,the sweat glands,regulate the body temperature.There are two types of sweat glands in the human body,the eccrine type,which produces the NaCl-rich solution in response to heat,and the apocrine type,which releases a lipid-rich secretion.1 Human sweat glands have many immunohistochemical markers which have close relationship with sweat-related diseases.2 Recently,although numerous immunohistochemical markers appeared in sweat glands,these biomarkers scattered in the oceans of literature without a systemic review for the relationship between the immunohistochemical marker and their functions in the counterparts of the sweat glands.It is important for identifying sweat gland-derived neoplasms that originate from or differentiate into the ducts or secretory elements of the sweat glands by immunohistochemical markers.Therefore,it is necessary to make a review of the immunohistochemical markers systematically.Actually,we try to classify the immunohistochemical markers of the sweat glands into four groups according to their protein characters and the functions associated with their presumed physiological counterparts of the sweat apparatus.  相似文献   

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Anhidrotic ectodermal dysplasia (EDA) is a relatively rare congenital hereditary disease. Because of a reduced number of sweat glands, patients are unable to perspire and consequently suffer from hyperthermia and infection. This is a potential cause of death in childhood. Domestic prenatal diagnosis methods focus on genetic diagnosis. But for some conditions, because of the uncertain molecular pathology, we need other methods to assist to in prenatal diagnosis. Here, we report one case of a new mutation locus which may be associated with EDA and the prenatal diagnosis of EDA by fetal skin biopsy under fetoscopy in mid pregnancy, combined with a review of the literature.

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目的研究及观察SD大鼠和巴马小型猪皮肤的正常比较组织学。方法取SD大鼠和巴马小型猪不同部位的皮肤进行石蜡切片、HE染色,光学显微镜观察。结果两种动物的皮肤组织学结构在以下方面存在着显著差异:1.SD大鼠的毛囊成簇分布,平均3~9成群,而巴马小型猪的毛囊较稀少;2.SD大鼠表皮较薄,没有透明层,基底细胞缺乏异质性,真皮与表皮连接面平坦,没有皮钉;而在巴马小型猪皮肤表皮和真皮连接区,有上下交错的表皮皮钉和真皮乳头;3.SD大鼠的真皮结构相对松散,真皮血管系统不发达,而巴马小型猪皮肤的真皮网织层和乳头层交界的地方,水平分布着很多的浅表小静脉和小动脉丛,这种血管分布的方式与人类皮肤中的血管分布极为类似;4.SD大鼠的汗腺只局限于足垫的皮肤,汗腺上皮只有一种细胞类型,腺细胞呈立方形或矮柱状,胞核圆形,导管短而弯曲,由两层上皮细胞组成。而巴马小型猪皮肤的汗腺是顶泌汗腺,分布于真皮和脂肪相接的真皮深层,分泌部为粗管,管腔大,盘曲成团。腺细胞呈立方形或扁平,胞核圆形或长梭形。腺细胞与基膜之间也有肌上皮细胞。导管较细而直,开口于毛囊上段。  相似文献   

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目的 探讨含人血管内皮细胞生长因子(VEGF)基因腺病毒表达载体Ad-VEGF转染大鼠骨髓间充质干细胞(BM-MSCs)的可行性.方法 采用贴壁培养筛选法富集大鼠BM-MSCs.将HEK293细胞中扩增并经效价分析后的Ad-VEGF转染大鼠BM-MSCs,通过对细胞转染效率、生长和活力的观察分析,以确定理想的感染复数(MOI)值.结果 本实验经HEK293细胞扩增制备的Ad-VEGF的病毒效价达8×108 pfu/ml;当MOI值为50时,Ad-VEGF转染大鼠BM-MSCs效率可达最高值53%;而MOI值高于50时,Ad-VEGF转染对BM-MSCs活性抑制明显.结论 成功实现Ad-VEGF转染大鼠BM-MSCs,其最适MOI值为50.  相似文献   

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原位杂交检测尸检组织中SARS-CoV RNA   总被引:1,自引:0,他引:1  
目的从分子水平检测急性重症呼吸综合征(SARS)患者的病变组织中SARS病毒(SARS-associated coronavirus, SARS-CoV)的存在和分布情况。方法应用原位杂交技术检测因SARS死亡患者的肺、脾脏、淋巴结、垂体、胰腺、甲状旁腺、肾上腺、胃肠道、皮肤、脑、肝、肾、血管、四肢横纹肌组织、骨髓、心脏、卵巢、子宫和睾丸等组织的SARS-CoV RNA的表达和定位。结果尸检组织多部位(包括肺泡上皮细胞、气管及支气管浆液腺上皮细胞、肺内单核/巨噬细胞、脾脏和淋巴结的单核/巨噬细胞、胰腺腺泡细胞、垂体嗜酸性细胞、肾上腺皮质细胞、甲状旁腺嗜酸性细胞、食道鳞状上皮、胃肠道上皮细胞及胃粘膜壁细胞、皮肤汗腺细胞、大脑神经元细胞、肝细胞、肾远曲小管上皮细胞、骨髓早幼粒细胞及小静脉内皮细胞)SARS-CoV RNA阳性。结论SARS-CoV可侵犯全身多种器官;SARS-CoV在机体的分布情况与冠状病毒受体CD13分布相似;皮肤汗腺、消化道上皮及肾远曲小管上皮细胞SARS-CoV RNA阳性对确定SARS传播途径具有重要意义。  相似文献   

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目的 从分子水平检测急性重症呼吸综合征(SARS)患者的病变组织中SARS病毒(SARS-associatcd coronavirus,SARS—CoV)的存在和分布情况。方法 应用原位杂交技术检测因SARS死亡患者的肺、脾脏、淋巴结、垂体、胰腺、甲状旁腺、肾上腺、胃肠道、皮肤、脑、肝、肾、血管、四肢横纹肌组织、骨髓、心脏、卵巢、子宫和睾丸等组织的SARS-CoVRNA的表达和定位。结果 尸检组织多部位(包括肺泡上皮细胞、气管及支气管浆液腺上皮细胞、肺内单核/巨噬细胞、脾脏和淋巴结的单核/巨噬细胞、胰腺腺泡细胞、垂体嗜酸性细胞、肾上腺皮质细胞、甲状旁腺嗜酸性细胞、食道鳞状上皮、胃肠道上皮细胞及胃粘膜壁细胞、皮肤汗腺细胞、大脑神经元细胞、肝细胞、肾远曲小管上皮细胞、骨髓早幼粒细胞及小静脉内皮细胞)SARS-CoVRNA阳性。结论 SARS-CoV可侵犯全身多种器官;SARS-CoV在机体的分布情况与冠状病毒受体CD13分布相似:皮肤汗腺、消化道上皮及肾远曲小管上皮细胞SARS-CoVRNA阳性对确定SARS传播途径具有重要意义。  相似文献   

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祁婧  裴玉英  逯军 《中国全科医学》2021,24(21):2749-2751
外胚层发育不良是一组罕见的先天性疾病,主要累及外胚层来源的器官,如指甲、牙齿、头发和汗腺等,造成其结构及功能异常。EDA基因是少汗性外胚层发育不良(HED)的致病基因。HED患儿易发生高热,高热严重者可造成死亡。本文总结了1例EDA基因c.852T>A新发变异所致HED患儿的临床及基因突变情况,丰富了该病的基因突变谱,以增强临床对该罕见病的认识。  相似文献   

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