Abstract：
:Modifications induced by estrogens on hormone-independent murine mammary tumor (MMT) and its main etiological agent, the MMT virus (MMTV), are reported. High doses of estrogens released continuously from silastic capsules delay significantly the development of transplanted tumors into syngeneic hosts. Neoplastic cells present a striking cytoplasmic vacuolization and changes in the MMTV differentiation pattern. Mature virions are detected budding into cytoplasmic vacuoles instead of the extracellular space as in spontaneous and untreated transplanted tumors. This phenomenon is reversed after estrogen withdrawal at the first sign of tumor development. Application of electron microscope immunocytochemistry with colloidal gold-protein A complex and multiple monospecific antibodies reveals several interesting features. In spontaneous and untreated tumor grafts, structural viral proteins p14 and p25 appear in both intracytoplasmic capsids and mature extracellular viruses. By contrast glycoprotein gp55 labels only the envelope of mature virus. In estrogen-treated tumors this antigenic pattern is modified and the gp55 is detected in those atypical virions maturing into the intracytoplasmic vacuoles. These observations led to the conclusions that the delay in the development of hormone-independent mammary tumors caused by estrogen is due to an abnormal maturational viral process and that estrogens induce alterations of polarity in the translocation process of viral envelope glycoproteins.
journal_name
Exp Mol Patholjournal_title
Experimental and molecular pathologyauthors
Peralta Soler A,Aoki Adoi
10.1016/0014-4800(89)90053-1subject
Has Abstractpub_date
1989-02-01 00:00:00pages
16-25issue
1eissn
0014-4800issn
1096-0945pii
0014-4800(89)90053-1journal_volume
50pub_type
杂志文章abstract：:Cell death caused by the accumulation of extracellular adenosine is believed to contribute to the profound loss of T lymphocytes in patients with severe combined immunodeficiency disease due to adenosine deaminase deficiency. Although adenosine is known to trigger apoptosis in thymocytes and peripheral T cells, the mo...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2005.08.001
更新日期：2005-12-01 00:00:00
abstract：:Purified bovine cardiac G-actin was interacted with doxorubicin (Adriamycin, ADR), in absence of potassium or magnesium to study ADR's effects on actin polymerization. Actin with ADR (10(-6) M) was incubated with polylysine-coated polystyrene beads and filaments formed were visualized by negative staining electron mic...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(86)90028-6
更新日期：1986-02-01 00:00:00
abstract：:Heritable differences in tumor susceptibility are observed in mice after repetitive exposures to the organotropic colon carcinogen azoxymethane (AOM). The following study was undertaken to determine whether early morphological alterations within the colonic epithelium correlate with subsequent cancer risk. A/J and SWR...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/s0014-4800(99)80003-3
更新日期：1999-02-01 00:00:00
abstract：:In this study we investigated the effects of a mild toxic challenge at selected points in time on the nonspecific cellular events that occurred in acutely damaged pulmonary alveoli. Swiss-Webster mice were treated with butylated hydroxytoluene (BHT, 400 mg/kg ip) and sacrificed at Days 1, 3, and 5 thereafter; either 2...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(87)90078-5
更新日期：1987-10-01 00:00:00
abstract：:The effects of chronic treatment with isoproterenol, reserpine, prenalterol, and terbutaline on rat parotid gland were investigated by electron microscopy and X-ray microanalysis. Chronic isoproterenol treatment induced lower potassium and calcium concentrations in the acinar cells. The cells were enlarged and contain...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(84)90024-8
更新日期：1984-12-01 00:00:00
abstract：:Knowledge of the factors regulating the rate of mRNA degradation, including postmortem delay, is important in determining the reliability of gene expression patterns in dermal tissue. Since RNA stability can be tissue dependent, this study evaluates the effect of postmortem interval on the integrity of total RNA or th...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2006.11.001
更新日期：2007-08-01 00:00:00
abstract：:We have investigated the incidence of the C677T and A1298C methylene tetrahydrofolate reductase (MTHFR) gene single nucleotide polymorphisms (SNPs) in the South Indian Tamil Nadu population with a total number of 72 individuals. The MTHFR genotyping was performed using the polymerase chain reaction followed by restric...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2004.04.006
更新日期：2004-10-01 00:00:00
abstract：:Epidermal growth factor receptor variant III (EGFRvIII) is a tumor-specific mutation widely expressed in glioma. However, its role and molecular mechanism in glioma have not been completely elucidated. Immunohistochemistry analyses of EGFRvIII, enhancer of zeste homolog 2 (EZH2) and aplysia ras homolog I (ARHI) were p...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2019.104344
更新日期：2020-02-01 00:00:00
abstract：:TNF-alpha is a proinflammatory cytokine, abundantly expressed after myocardial infarction. It has been suggested that it exhibits myocardial suppressive and cytotoxic effects. AG-556 is a tyrosine kinase inhibitor synthesized based on its ability to reduce TNF-alpha production and cell toxicity, and to improve experim...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/s0014-4800(03)00022-4
更新日期：2003-06-01 00:00:00
abstract：:Sulfur mustard (SM) is a bifunctional alkylating agent causing skin inflammation, edema and blistering. A hallmark of SM-induced toxicity is follicular and interfollicular epithelial damage. In the present studies we determined if SM-induced structural alterations in hair follicles and sebaceous glands were correlated...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2014.03.002
更新日期：2014-06-01 00:00:00
abstract：:Fibroblast activation protein-α (FAPα) is secreted by activated stromal fibroblasts and can promote ovarian cancer cell proliferation, migration and invasion. However, the molecular mechanism by which FAPα promotes tumor cell proliferation and invasion is unknown. The role of the non-enzymatic activities of FAPα in tu...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2013.06.007
更新日期：2013-08-01 00:00:00
abstract：:Fluoride is known to cause ectopic calcification. The biochemical mechanism(s) involved in the initiation of calcification is not understood and the accompanying ultrastructural changes remain to be elucidated. Therefore, certain relevant parameters have been investigated in the aorta of rabbits administered fluoride,...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(90)90025-9
更新日期：1990-08-01 00:00:00
abstract：:Antigen-specific CD8 suppressor T cells (CD8(+) Ts) are adaptive regulatory T cells that are induced in vivo and in vitro by chronic antigenic stimulation of human T cells. CD8(+) Ts induce the upregulation of the inhibitory receptors ILT3 and ILT4 on monocytes and dendritic cells rendering these antigen presenting ce...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2012.09.011
更新日期：2012-12-01 00:00:00
abstract：:The Chediak-Higashi syndrome (CHS) is an inherited disorder of humans and of several animal species, characterized by partial albinism, pseudohemophilia, increased susceptibility to disease, and large inclusions in all granule-forming cells. In this study, various parameters of adenine nucleotide biochemistry were exa...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1993.1004
更新日期：1993-02-01 00:00:00
abstract：:We investigated the protein carbonylation of red blood cell (RBC) membrane in type 2 diabetic patients and the potential implication of carbonyl/oxidative stress in reflecting disease severity. Sixty-four diabetic patients with or without retinopathy of variable clinical severity (Groups DR and DM, respectively) and 2...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2009.04.001
更新日期：2009-08-01 00:00:00
abstract：:Invadopodia, cancer cell protrusions with proteolytic activity, are functionally associated with active remodeling of the extracellular matrix. Here, we show that the invadopodia-related protein TKS5 is expressed in human pancreatic adenocarcinoma lines, and demonstrate that pancreatic cancer cells depend on TKS5 for ...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2018.11.005
更新日期：2019-02-01 00:00:00
abstract：:It is known that spermidine and other naturally occurring polyamines accumulate in rat lung slices by an energy-dependent uptake process and that alveolar macrophages (AM) have a greater rate of uptake than has the total lung cell population. In the present study rat AMs were incubated with spermidine, which resulted ...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1994.1005
更新日期：1994-02-01 00:00:00
abstract：:Retinoids are known to modulate macrophage differentiation, proliferation, and function including cytokine gene expression. However, signaling of retinoic acid (RA), a biologically active metabolite of vitamin A, in Kupffer cells has not been characterized. This study reports mRNA expression by rat Kupffer cells of RA...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1999.2284
更新日期：2000-02-01 00:00:00
abstract：:The dialysate fluid of uremic patients exhibits, in vitro, an inhibitory effect on cell growth, owing to urea, guanidino compounds, and substances named middle molecules. The polyamines are compounds which exhibit high levels in biological fluids during either normal development or disease such as psoriasis, uremia, a...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1997.2215
更新日期：1997-01-01 00:00:00
abstract：:Esophageal squamous cell carcinoma (ESCC) is highly fatal due to late diagnosis and inefficient treatment. Early disease detection could improve diagnosis and patient survival. Esophageal squamous epithelial cells express SPRR3, a member of the small proline-rich protein family, which is downregulated in ESCC. Therefo...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2011.06.006
更新日期：2011-10-01 00:00:00
abstract：:Transmissible spongiform encephalopathies (TSE) are fatal neurodegenerative diseases of man and animals and are transmitted by a filterable pathogen whose identity is currently unresolved. Our data indicates that Spiroplasma, a wall-less bacterium, is involved in the pathogenesis of TSE. We searched for Spiroplasma ri...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2004.02.002
更新日期：2004-08-01 00:00:00
abstract：:Lumican is a member of a small leucine-rich proteoglycan (SLRP) family and it regulates the assembly and diameter of collagen fibers in the extracellular matrix of various tissues. Lumican expression was reported in various kinds of tumor cells. Lumican inhibits the growth of melanoma cells, but the lumican in pancrea...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2010.01.010
更新日期：2010-06-01 00:00:00
abstract：:Thirty-nine patients with fibromyalgia syndrome (FMS) according to American College of Rheumatology criteria were studied for cell-mediated sensitivity to environmental chemicals. Lymphocytes were tested by standard [(3)H]thymidine incorporation in vitro for T cell memory to 11 chemical substances. Concanavalin A (Con...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.2000.2322
更新日期：2000-10-01 00:00:00
abstract：:Previous studies demonstrated that the anti-phosphorylcholine (PC) antibodies produced by aged BALB/c (18-22 months old) mice are structurally different and less protective against infection with Streptococcus pneumoniae than those produced by young (3-4 months old) syngeneic mice. However, PC antibody from aged anima...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1995.1011
更新日期：1995-04-01 00:00:00
abstract：:The pathophysiological biology of human hypertrophic scar was examined in a long-term organ culture system. Fresh full-thickness, thin slices of scar were placed in petri dishes. Tissue was successfully maintained for 2 weeks in an environment made up of CMRL-1066 medium, fetal bovine serum, insulin, and hydrocortison...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(84)90079-0
更新日期：1984-04-01 00:00:00
abstract：:The effect of fish oil supplements on atherogenesis is controversial, especially when fish oil does not lower plasma cholesterol. Some studies in swine have shown that a fish oil supplement to a butter-cholesterol diet reduces atherogenesis. The fish oil supplement also frequently reduces average plasma cholesterol le...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1006/exmp.1993.1037
更新日期：1993-12-01 00:00:00
abstract：:To investigate the role of N-acetylglucosaminyltransferases V (GnT-V) in the malignancy of human hepatocellular carcinoma (HCC), the GnT-V stably suppressed cell line HepG2 GnT-V/1564 was constructed from HepG2. The proliferation, migration, invasion, metastasis of HepG2 GnT-V/1564 was investigated both in vitro and i...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2012.01.011
更新日期：2012-08-01 00:00:00
abstract：:Colorectal cancer (CRC) is the third most common carcinoma worldwide. Despite the progress in screening and treatment, CRC remains a leading cause of cancer-related mortality. Alterations to normal nucleic acid processing may drive neoplastic transformation of colorectal epithelium. DNA repair machinery performs an es...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章,评审
doi：10.1016/j.yexmp.2019.104364
更新日期：2020-04-01 00:00:00
abstract：:Angiogenesis is a common feature of pathological processes including wound healing, tumor formation, and chronic inflammation. Chronic inflammation can also be associated with dilation or proliferation of lymph vessels. We examined blood vessels and lymphatics and the expression of pro- and anti-angiogenic genes in th...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/j.yexmp.2016.05.015
更新日期：2016-12-01 00:00:00
abstract：:5-Azacytidine (AZC) was studied in a lung cancer model in outbred and syngeneic (F1D) hamsters wherein benzol[a]pyrene (BP) from sustained release implants (SRI) induces preneoplastic mucosal changes which progress to bronchogenic cancer. In pilot studies to evaluate AZC toxicity, a dose schedule of 5 mg/kg biweekly w...
journal_title：Experimental and molecular pathology
pub_type： 杂志文章
doi：10.1016/0014-4800(90)90022-6
更新日期：1990-08-01 00:00:00
