Abstract：
:Tumor angiogenesis plays important roles in the pathogenesis and prognosis of lung cancer. Both vascular endothelial growth factor (VEGF) and Dll4/Notch pathways are critical for angiogenesis, whereas their relationship under hypoxia in lung cancer remains unknown. Thus, in the present study, we evaluated the expression of VEGF and Dll4/Notch signaling molecules, and assessed their association with the microvessel density (CD31) and hypoxia (HIF1a) in lung cancer and normal lung tissues using immunohistochemical and Real-time RT-PCR techniques. Then, we investigated the biological function of Dll4 by transfecting Dll4 into HUVECs. In lung cancer tissues, Notch pathway molecules (HES1) and VEGF pathway molecules (VEGFR1 and VEGFR2) were significantly up-regulated, while the ratio of VEGFR1/VEGFR2 was decreased. CD31 and HIF1a were also found to be elevated in lung cancer. VEGFR1 was negatively correlated with Notch1 while positively correlated with Dll4. CD31 was positively correlated with HIF1a but negatively correlated with VEGFR1. Moreover, HIF1a was nearly positively correlated with HES1 in lung cancer tissues. After transfection, Dll4, Notch1 and VEGFR1 were up-regulated while VEGF and VEGFR2 were down-regulated in Dll4-transfected HUVECs compared with controls. Also, our findings suggest that the expression of VEGF and VEGFR2 increased gradually with the disease progression of lung cancer. In summary, VEGF and Notch signaling pathway molecules were overexpressed in lung cancer, which positively correlates with hypoxia (HIF1a) and angiogenesis (CD31). There might be a negative feedback loop between VEGF and Dll4/Notch signaling pathway in lung tumor angiogenesis.
journal_name
Histol Histopatholjournal_title
Histology and histopathologyauthors
Yu S,Sun J,Zhang J,Xu X,Li H,Shan B,Tian T,Wang H,Ma D,Ji Cdoi
10.14670/HH-28.277subject
Has Abstractpub_date
2013-02-01 00:00:00pages
277-84issue
2eissn
0213-3911issn
1699-5848journal_volume
28pub_type
杂志文章abstract：:A study was undertaken to analyze the spatio-temporal pattern of mesenchymal cell proliferation in the developing palate of quail. Quail embryos were grown in shell-less culture. The developing palates were labelled with 3H-thymidine between culture days 2-6 (which corresponded in vivo incubation days 5-9), and proces...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：
更新日期：1995-07-01 00:00:00
abstract：:Primary perivascular epithelioid cell tumor (PEComa) of the liver is a very rare example of an emerging family of hepatic PEC tumors. Only few cases have been described so far. We report the case of a large but benign hepatic PEComa in a 53-year-old man without signs of tuberous sclerosis. In contrast to recently desc...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-23.1185
更新日期：2008-10-01 00:00:00
abstract：UNLABELLED:The aim of this work was to evaluate the effect of magnesium sulphate (MgSO4) administration on blood-brain barrier (BBB) permeabilization after cerebral hypoxia-ischemia (HI) induced by partial occlusion of the umbilical cord of premature fetal lambs. We also characterized BBB dysfunction in terms of the le...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-24.1129
更新日期：2009-09-01 00:00:00
abstract：:Chaperone-mediated autophagy (CMA), a selective form of autophagy, where cellular proteins with KFERQ-like motif are targeted to the lysosome for degradation, is necessary to maintain cellular homeostasis. The role of CMA in neurodegenerative diseases has been extensively studied in the past decades, with defects in t...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-18-202
更新日期：2020-07-01 00:00:00
abstract：:TNFalpha exerts apoptosis throughout an intracellular transduction pathway that involves the kinase proteins TRAF-2 (integration point of apoptotic and survival signals), ASK1 (pro-apoptotic protein), MEK-4 (p38 activator and metastasis suppressor gene), JNK (stress mitogen activated protein kinase) and the transcript...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-23.1279
更新日期：2008-10-01 00:00:00
abstract：:Immunocytochemical demonstration of metallothionein (MT) has been reported as a useful prognostic tool in human breast cancer. The aim of this study was to determine the immunohistochemical location of MT in canine mammary tumours and its possible correlation with the morphologic characteristics of these tumours. Surg...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-14.51
更新日期：1999-01-01 00:00:00
abstract：:Cyclin A, cyclin E, BUBR1, MAD2 and Aurora A are all cell-cycle regulatory proteins and have been proven to play crucial roles in carcinogenesis. However, their expression patterns in invasive ductal breast carcinoma (IDBC) are controversial and unclear. In this study, we examined the expression status of these candid...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-26.761
更新日期：2011-06-01 00:00:00
abstract：:Macrophages are important effector cells in cell-mediated immunity against intracellular infection. Among cytokines that macrophages are able to release are IL-12 and TNF alpha. IL-12 is a critical linker between the innate and adaptive cell-mediated immunity, capable of Th1 differentiation and IFN gamma release by T ...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-15.199
更新日期：2000-01-01 00:00:00
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journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-17.1121
更新日期：2002-10-01 00:00:00
abstract：:The corneas of nine pipefish, Corythoichthyes paxtoni (Syngnathidae, Teleostei), five freshly fixed and four museum specimens, were examined using light and electron microscopy. In transverse section, the surface of the corneal epithelium is covered by a complex series of ridges or microplicae which extends over the c...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：
更新日期：1995-04-01 00:00:00
abstract：:There is now evidence that estrogens and androgens are exerting their effects in different tissues throughout the body. In order to determine the sites of action of these steroids, studies have been performed to identify at the cellular level the localization of androgen receptor (AR) and the two estrogen receptor (ER...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-15.1261
更新日期：2000-10-01 00:00:00
abstract：:Having identified glycans of cellular glycoconjugates as versatile molecular messages, their recognition by sugar receptors (lectins) is a fundamental mechanism within the flow of biological information. This type of molecular interplay is increasingly revealed to be involved in a wide range of (patho)physiological pr...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-18-199
更新日期：2020-06-01 00:00:00
abstract：:A method for the in vitro generation of granulomas and its use in the analysis of the human granulomatous response is summarized. As a target for the cellular response L3 larvae of Nippostrongylus brasiliensis are coincubated with human mononuclear blood cells, and within seven to fourteen days the development of bloo...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-16.645
更新日期：2001-04-01 00:00:00
abstract：:The present study analyzed the temporal and spatial expression of TGF-beta isoforms and activated pSmad2 and p38MAPK during epithelial debridement wound repair, using chick cornea by immunohistochemistry. Normal corneas showed low-level TGF-betas staining. Following wounding, TGF-beta1 expression was strong in the Bow...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-24.1405
更新日期：2009-11-01 00:00:00
abstract：:The acute and chronic effects of bombesin (BM) on the structure and function of rat adrenal cortex were investigated by morphometric and radioimmunological techniques. An intraperitoneal bolus injection of 2 micrograms/rat BM markedly raised plasma corticosterone (B) concentration (PBC). The intraperitoneal BM infusio...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:The study aimed at determining levels of metallothionein (MT) and Ki-67 antigen expression in adenocarcinomas of large intestine and examining relation of the expression levels with various clinical and pathological variables. The studies were performed on 81 cases of large intestine adenocarcinoma. Using immunocytoch...
journal_title：Histology and histopathology
pub_type： 临床试验,杂志文章
doi：10.14670/HH-18.401
更新日期：2003-04-01 00:00:00
abstract：:Melanocytes characterized by their tyrosinase activity, melanosomes and dendrites locate in the basal layer of epidermis and hair bulb in the skin of mice. Melanocytes differentiate from undifferentiated melanoblasts derived from embryonic neural crest. Melanocyte-stimulating hormone plays an important role in the reg...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：
更新日期：1995-01-01 00:00:00
abstract：:Amyloidosis is a group of diseases characterized by the extracellular deposition of protein that contains non-branching, straight fibrils on electron microscopy (amyloid fibrils) that have a high content of beta-pleated sheet conformation. Various biochemically distinct proteins can undergo transformation into amyloid...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-20.1295
更新日期：2005-10-01 00:00:00
abstract：:The Farnesoid X Receptor (FXR) is a member of the nuclear receptor superfamily of ligand-activated transcription factors, which plays crucial role in bile acid, cholesterol, lipid and glucose metabolism, as well as in the development of atherosclerosis, intestinal bacterial growth and liver regeneration. FXR is also i...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-27.835
更新日期：2012-07-01 00:00:00
abstract：:In the lungs, neuronal M2 muscarinic receptors limit the release of acetylcholine from postganglionic cholinergic nerves. However, these receptors are not functional under certain circumstances in animal models of hyperreactivity such as occurs after exposure of sensitised animals to an allergen or during a respirator...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-15.861
更新日期：2000-07-01 00:00:00
abstract：:During endotoxic shock, the liver exerts a lipopolysaccharide (LPS) clearance function with the participation of both parenchymal and sinusoidal cells. Liver damage could be caused by LPS direct action, hypoxia and/or inflammatory mediators released by Kupffer cells. The aim of this study is to establish an experiment...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：
更新日期：1996-07-01 00:00:00
abstract：:The resistance to airflow that develops in most obstructive processes takes place in the small airways. The aim of the present paper is to describe bronchial hysteresis morphometrically in a respiratory cycle model. As a working hypothesis, it is proposed that the changes that take place in the respiratory tract durin...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-18.19
更新日期：2003-01-01 00:00:00
abstract：:Tumorigenesis correlates with hypermethylation of tumor suppressors and hypomethylation of oncogenes. DNA methyltransferases (DNMTs) catalyze DNA methylation, and mutations and aberrant expression in DNMT genes are found in multiple human tumors. The discovery of the DNA demethylation function of TET proteins has open...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-29.991
更新日期：2014-08-01 00:00:00
abstract：INTRODUCTION:It is difficult to prevent and treat intra- and peri-neural fibrosis after peripheral nerve surgery. Many authors have attempted to develop and verify the effectiveness of substances to decrease the formation of adherences in different tissues. MATERIAL AND METHODS:this study aimed to assess the effective...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-25.741
更新日期：2010-06-01 00:00:00
abstract：:A current concern about the biological effects of electromagnetic fields (EMF) is increasing with the wide spread use of X-band microwaves (MW, 8-10 GHz range). Gigahertz transverse electromagnetic (GTEM) field flat transmission lines are currently being used for experimental exposure of biological samples to high fre...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-26.1187
更新日期：2011-09-01 00:00:00
abstract：:During mammalian mitosis, a proofreading network called the spindle assembly checkpoint (SAC) is indispensable for ensuring the fidelity of chromosome segregation. An inhibitory SAC signal is deputed to inhibits mitotic cell-cycle progression in response to misaligned chromosomes until such imperfections are rectified...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-21.873
更新日期：2006-08-01 00:00:00
abstract：:Systematic studies on hepatic stellate cells and myofibroblasts have so far mainly focused on cells located in the perisinusoidal space of Disse, the so-called littoral compartment. Here, these cells play a key role for intralobular fibrogenesis and sinusoidal capillarization. However, advanced hepatic fibrosis and ci...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-14.719
更新日期：1999-07-01 00:00:00
abstract：:The International Prognostic Index (IPI) has been the basis for determining prognosis in patients with diffuse large B-cell lymphoma (DLBCL) for the past 20 years. The utility of the IPI must be reassessed in the era of immunochemotherapy. Seven risk factors at diagnosis were identified, and a maximum of 7 points were...
journal_title：Histology and histopathology
pub_type： 杂志文章
doi：10.14670/HH-11-673
更新日期：2016-03-01 00:00:00
abstract：:It has been commonly supposed that adult stem cells co-localize with supporting cells within specific regions or specialized microenvironment in each tissue/organ, called stem cell niche. This concept was based on the assumption that stem cells are intrinsically hierarchical in nature. However, recent data indicate th...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-25.397
更新日期：2010-03-01 00:00:00
abstract：:Melanopsin-expressing retinal ganglion cells (mRGCs) constitute a system in the mammalian retina used for irradiance detection, regulating non-image forming functions, such as photoentrainment of circadian rhythms, control of the pupillary light reflex, masking response, light-regulated melatonin secretion, and modula...
journal_title：Histology and histopathology
pub_type： 杂志文章,评审
doi：10.14670/HH-18-138
更新日期：2019-12-01 00:00:00
