Abstract：
:Polymorphonuclear cells (PMN) are believed to be important effector cells responsible the myocardial damage seen following ischaemia. However, the exact kinetics of their migration remains controversial. Isolated PMN (10 x 10(6) cells) labelled with (51)Cr were injected into four groups of Lewis rats: 0 h (T0h; n = 13), 2 h (T2h; n = 7), 4 h (T4h; n = 7) or 6 h following ischaemia (T6h; n = 4). In all recipients, a left thoracotomy and ligation of the left anterior descending coronary was performed. Control animals underwent sham thoracotomy (n = 10). All animals were killed at 24 h and the radioactivity in the tissue measured to estimate labelled PMN migration. Monoclonal antibody blockade was also performed in experimental animals to assess the contribution of beta2 and alpha4 integrins to the PMN migration (n = 32). Labelled PMN migration to the myocardium was similar in all experimental groups, T0-T6h (7.2-11 x 10(5) labelled PMN) and significantly higher than sham controls (2.2 x 10(5) labelled PMN; P = 0.03). In contrast PMN migration to dermal inflammatory sites was highest in T0h group, and reached background level in the T4h and T6h groups. beta2 integrin blockade inhibited labelled PMN migration by 32%. Blockade of alpha4 integrin inhibited PMN migration by 30% while the combined beta2 + alpha4 blockade resulted in 63% inhibition of labelled PMN migration compared to treatment with isotype control antibody (P = 0.035). PMN migration following myocardial ischaemia persists over several hours after myocardial infarction and does not follow similar migration kinetics to dermal inflammation. Our findings also suggest that PMN migration is dependent equally on beta2 and alpha4 integrins.
journal_name
Int J Exp Patholjournal_title
International journal of experimental pathologyauthors
Légaré JF,Oxner A,Heimrath O,Issekutz Tdoi
10.1111/j.1365-2613.2007.00541.xsubject
Has Abstractpub_date
2007-08-01 00:00:00pages
291-300issue
4eissn
0959-9673issn
1365-2613pii
IEP541journal_volume
88pub_type
杂志文章abstract：:Interstitial fibrosis, associated with extensive accumulation of extracellular matrix constituents in the cortical interstitium, is directly correlated to progression of renal disease. The earliest histological marker of this progression is the accumulation in the interstitium of fibroblasts with the phenotypic appear...
journal_title：International journal of experimental pathology
pub_type： 杂志文章,评审
doi：10.1111/j.1365-2613.2011.00764.x
更新日期：2011-06-01 00:00:00
abstract：:Angiogenesis is a common finding in chronic inflammatory diseases; however, its role in Sjögren's syndrome (SS) remains to be elucidated. Previous SS studies have demonstrated an increase in VEGF-A/VEGFR-2 system expression in minor salivary gland (MSG) biopsies from patients with SS, but differences in the new blood ...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/iep.12061
更新日期：2014-04-01 00:00:00
abstract：:The roles of inducible nitric oxide synthase (iNOS) in the development and healing of gastric ulcers have not been fully characterized. We characterized iNOS expression in experimentally induced ulcers in rat and mouse stomachs and investigated the roles of iNOS using iNOS gene-deficient (iNOS-/-) mice and wildtype mi...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2003.00357.x
更新日期：2003-10-01 00:00:00
abstract：:Previously we have found deregulation of collagen metabolism in human pancreatitis and pancreatic cancer tissues. Insulin-like growth factor-I (IGF-I) is known to stimulate collagen biosynthesis through interaction with IGF-I receptor. IGF-I binding proteins (BPs) regulate the activity of IGF-I. We investigated whethe...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1046/j.1365-2613.2002.00237.x
更新日期：2002-10-01 00:00:00
abstract：:The present study was carried out to investigate the role of hypertension in the genesis and localization of intimal lesions and medial remodelling found in the prestenotic segment in relation to a severe stenosis of the abdominal aorta just below the diaphragm. Male young rats were divided randomly into operated grou...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2006.00506.x
更新日期：2006-12-01 00:00:00
abstract：:Bronchial subepithelial fibrosis is an histological characteristic of asthma. Cytokines and other mediators, such as PDGF-BB, TGF-beta1 and ET-1 found in the asthmatic submucosa can potentially activate a repair process that leads to fibroblast proliferation and collagen synthesis. The mechanisms of modulation of the ...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1046/j.1365-2613.2000.00173.x
更新日期：2000-12-01 00:00:00
abstract：:BALB/c and CBA mice maintained on low (4%) or normal (18%) protein diets for 2 weeks after weaning were infected with a sublethal dose of murine cytomegalovirus, adjusted in proportion to body weight. Viral replication, histopathological changes and humoral responses to the virus were compared between the dietary grou...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1991-02-01 00:00:00
abstract：:Mouse phrenic nerve-hemidiaphragms were stimulated in vitro in the presence of the anticholinesterase ecothiopate iodide and prepared for light and electron microscopy at different times during and after the appearance of prolonged contractions localized at the endplate. The earliest changes were at the subsynapse, wi...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1991-06-01 00:00:00
abstract：:Chronic hepatitis B virus (HBV) infection is a major global cause of hepatocellular carcinoma (HCC). Individuals who are chronic carriers have a greater than 100-fold increased relative risk of developing the tumour. Several mechanisms of HBV-induced HCC have been proposed. Integration of HBV DNA into the genome of he...
journal_title：International journal of experimental pathology
pub_type： 杂志文章,评审
doi：10.1111/j.1365-2613.2001.iep0082-0077-x
更新日期：2001-04-01 00:00:00
abstract：:A dose-dependent neutrophil migration was observed following the injection of purified (Hu IFN-gamma) or recombinant (rIFN-gamma) human gamma interferon into rat peritoneal cavities. This finding contrasts with their inability to cause chemotaxis in vitro in the Boyden chamber. Neutrophil migration into peritoneal cav...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：:Regression of submandibular acinar cell hyperplasia after withdrawal of the mitogenic stimulus induced by isoprenaline was studied in male Wistar rats. Intraperitoneal administration of 39 mg of isoprenaline, in divided doses over a 9-day period, resulted in a marked increase in gland size and weight. The proportional...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
abstract：:The acute phase of experimental Chagas' disease in rats is associated with early lesions of the post-ganglionic sympathetic nerve terminals of the heart, the varicosities being the target. In the superior cervical and stellate ganglia the preganglionic fibres showed no signs of lesion in the course of experimental Cha...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1046/j.1365-2613.1996.00971.x
更新日期：1996-06-01 00:00:00
abstract：:Cyclophilins are proteins which are remarkably conserved through evolution; moreover they have been found in every possible existing organism, which indicates their fundamental importance. Due to their enzymatic properties, multiplicity, cellular localization and role in protein folding they belong to the group of pro...
journal_title：International journal of experimental pathology
pub_type： 杂志文章,评审
doi：10.1046/j.1365-2613.1999.00128.x
更新日期：1999-12-01 00:00:00
abstract：:The aim of this study was to estimate the relationship of endothelial dysfunction induced by intracellular S-adenosylhomocysteine (SAH) accumulation and DNA methylation in human umbilical vein endothelial cells (HUVEC). The isolated HUVEC were incubated with 3-deazaadenosine (DZA) to induce experimental intracellular ...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2009.00687.x
更新日期：2009-12-01 00:00:00
abstract：:Although the exact mechanism for the progression of myelofibrosis in acute megakaryoblastic leukaemia is unclear, certain humoral factors released from the proliferating megakaryoblasts that are unable to store these factors in their defective alpha-granules, including platelet derived growth factor (PDGF), fibroblast...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1995-10-01 00:00:00
abstract：:The formation of new blood vessels, angiogenesis, is an important event in inflammation, wound healing and tumour growth. Mediators produced by various cells when exposed to endotoxin include cytokines (tumour necrosis factor, interleukins 1 and 6, and basic fibroblast growth factor) which, it has been suggested, stim...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:Pulmonary granuloma formation and fibrosis were experimentally induced in Sprague-Dawley strain rats by Angiostrongylus cantonensis. Increased protein levels of matrix metalloproteinase (MMP)-2, -9, -13 and the imbalance between these enzymes and metalloproteinase inhibitors, tissue inhibitors of MMPs (TIMP-1 and -2),...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2007.00554.x
更新日期：2007-12-01 00:00:00
abstract：:The objective of this study was to assess whether ascorbic acid (AA), an intracellular anti-oxidant critical for neuronal protection, when added to artificial cerebrospinal fluid (ACSF), is able to protect hippocampal (HPC) formation slice preparations from ageing. In this research, the micro-electroencephalographic (...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2012.00838.x
更新日期：2012-12-01 00:00:00
abstract：:Streptozotocin (SZ)-induced insulitis, which is an animal model for insulin-dependent diabetes mellitus, was suppressed by lactic dehydrogenase virus (LDV) infection. There were no differences in degenerative and necrotic changes of islet cells between SZ-treated mice and SZ-treated mice with LDV infection during the ...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:Skin window procedures in humans have shown rapid accumulation of neutrophils into the exuded fluids above abraded skin. The present study was undertaken to determine if similar epicutaneous neutrophil accumulation might explain the extreme resistance of HRS/J mice, both hairless (hr/hr) and haired (hr/+), to experime...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2008.00584.x
更新日期：2008-06-01 00:00:00
abstract：:The degenerative and regenerative changes in murine skeletal muscle after injection of Bothrops asper venom were studied by histological, lectin histochemical and immunocytochemical techniques. According to our observations, the process was divided into four main stages: (a) During the first 3 days prominent degenerat...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1991-04-01 00:00:00
abstract：:Up to 40% of children with Reye's syndrome have hypoglycaemia that could contribute to the patient's encephalopathy. We developed a mouse model in which intravenous inoculation of influenza B/Lee virus produced a non-permissive infection of hepatocytes and cerebral endothelial cells and caused many clinical, biochemic...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1993-06-01 00:00:00
abstract：:This study was performed to characterize the intestinal lesions in chronic graft-versus-host disease (GVHD) in mice and to determine a possible role of intestinal intraepithelial lymphocytes (ilEL) in the development of these lesions. Chronic GVHD was induced by transfer of DBA/2 lymphocytes into non-irradiated (C57BL...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：
更新日期：1993-08-01 00:00:00
abstract：:Interleukin (IL)-6-related cytokines share gp130 as the signal-transducing protein. Cardiac myocytes produce various kinds of cytokines including IL-6 and cardiotrophin-1. Activation of gp130 transduces hypertrophic and cytoprotective signals in cardiac myocytes via JAK/STAT, MAP kinase and PI-3 kinase pathways. Besid...
journal_title：International journal of experimental pathology
pub_type： 杂志文章,评审
doi：10.1046/j.1365-2613.2000.00139.x
更新日期：2000-02-01 00:00:00
abstract：:Mitochondrial DNA (mt-DNA) disorders and abnormal regulation of nuclear-derived proteins devoted to the cross-talk between the two cellular genomes have recently interested researchers in the field of neuromuscular diseases. We have identified, isolated and sequenced a new gene, augmenter of liver regeneration (ALR) t...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2009.00639.x
更新日期：2009-08-01 00:00:00
abstract：:The objectives of this work were to study some pathological aspects of kidneys obtained from dogs naturally infected with Leishmania infantum and from dogs experimentally infected with two different strains of L infantum with special emphasis on fibrotic process. Seventy eight specimens of paraffin-embedded kidney fra...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/iep.12321
更新日期：2019-08-01 00:00:00
abstract：:The liver sinusoidal endothelial cell (LSEC) is damaged by many toxins, including oxidants and bacterial toxins. Any effect on LSECs of the Pseudomonas aeruginosa virulence factor, pyocyanin, may be relevant for systemic pseudomonal infections and liver transplantation. In this study, the effects of pyocyanin on in vi...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.1365-2613.2008.00602.x
更新日期：2008-12-01 00:00:00
abstract：:The aim of the present study was to clarify the therapeutic effects of 1alpha, 25[OH]2 vitamin D3 (calcitriol) pulse injection on bone lesions induced in a rat model of chronic cadmium toxicosis. Ovariectomized (OVX) and control-operated (sham-OVX) rats were given repeated intravenous injections of 0.5 mg/kg/day CdCl2...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1046/j.1365-2613.2001.00179.x
更新日期：2001-02-01 00:00:00
abstract：:An autoimmune kidney disease morphologically and functionally similar to Heymann nephritis (HN) was induced in mature male Sprague Dawley rats by repeated weekly IP injections of a chemically modified azo sonicated ultracentrifuged (u/c) rat kidney fraction 3 (rKF3) antigen in an aqueous medium. The experiment was ter...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/j.0959-9673.2004.00389.x
更新日期：2004-10-01 00:00:00
abstract：:Hydroxymethylnitrofurazone (NFOH) is a nitrofurazone prodrug effective in vivo during acute infections, and it has less hepatotoxicity effect than the standard drug benznidazole (BZN) which has been used during short- and long-term treatment. In the present study, we induced the indeterminate form of Chagas disease in...
journal_title：International journal of experimental pathology
pub_type： 杂志文章
doi：10.1111/iep.12289
更新日期：2018-10-01 00:00:00
