Abstract:
:Heavy metals administered to animals, at doses which appear relatively innoxious by themselves, enhance susceptibility to endotoxin. The mechanisms which underly this phenomenon are not yet fully understood. In this study we investigated the role of the cytokine Tumour Necrosis Factor (TNF), an important mediator of the effects of endotoxin, in this phenomenon. First it was studied whether lead enhances sensitivity of mice to endotoxin and to TNF. Lead appeared to enhance sensitivity to both endotoxin and TNF resulting in mortality of mice at low endotoxin and TNF doses. Next we studied the influence of lead on serum TNF levels after stimulation by endotoxin. Lead treated mice showed lower TNF blood levels two hours after injection of endotoxin and lead. Six and eight hours after injection TNF levels of lead treated mice were higher compared to those of mice injected with endotoxin only. In the last part of our investigation, we studied the influence of a monoclonal hamster anti TNF antibody on the effect of combined lead-endotoxin exposure. Administration of the antibody prevents lethality completely. Our data indicate that TNF plays a central role in the phenomenon of the enhanced susceptibility of animals to endotoxin after exposure to lead. The enhanced susceptibility to endotoxin is caused by an enhanced susceptibility to TNF and possibly by a prolonged exposure to a higher level of TNF.
journal_name
Immunopharmacol Immunotoxicoljournal_title
Immunopharmacology and immunotoxicologyauthors
Dentener MA,Greve JW,Maessen JG,Buurman WAdoi
10.3109/08923978909005373subject
Has Abstractpub_date
1989-01-01 00:00:00pages
321-34issue
2-3eissn
0892-3973issn
1532-2513journal_volume
11pub_type
杂志文章abstract::The effect of Cordyceps militaris culture broth (CMB) on melanogenesis in B16F0 melanoma cells was evaluated by measurement of the melanin concentration after 3 days of incubation. The B16F0 melanoma cells were treated with various concentrations of CMB 10-100 μg/mL and arbutin of 200 μM. Phenolic content and antioxid...
journal_title:Immunopharmacology and immunotoxicology
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doi:10.3109/08923973.2011.611810
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abstract::Tubeimoside-1 (TBMS1) is one of the important components in Bolbostemma paniculatum (Maxim.) Franque. In the study, its immunosuppressive effects on murine T lymphocyte responses were evaluated in vitro and in vivo. The data showed that TBMS1 inhibited ConA-induced T lymphocyte proliferation, decreased the ratio of CD...
journal_title:Immunopharmacology and immunotoxicology
pub_type: 杂志文章
doi:10.3109/08923973.2015.1063644
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abstract::Purple bamboo salt is a specially processed salt according to the traditional recipe using normal salt and bamboo. It has been used for the purpose of prevention and treatment of various diseases in Korea. We investigated the anti-inflammatory activity of purple bamboo salt by using human mast cell line (HMC-1). Purpl...
journal_title:Immunopharmacology and immunotoxicology
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doi:10.1081/iph-120024505
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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doi:10.1080/08923973.2017.1386212
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journal_title:Immunopharmacology and immunotoxicology
pub_type: 杂志文章
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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doi:10.1080/08923973.2020.1818771
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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abstract::N-nitrozodimethyloamine (NDMA) is a carcinogenic compound that can be formed in vivo. NDMA is synthesized from precursors-amines and nitrosating agents. Nitrosating agents are formed through the reaction of oxide, reactive oxygen species and nitric oxide (NO). Human neutrophils (PMN) are an important source of the mos...
journal_title:Immunopharmacology and immunotoxicology
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abstract::The purpose of our study was to compare the effectiveness of immunosuppressive drugs on the prevention of allograft rejection in a murine model of low-risk and high-risk keratoplasty. The therapy included FK 506 (tacrolimus; 0.2 mg/kg), mycophenolate mofetil (30 mg/kg), aminoguanidine (0.1 g/kg), and combination of FK...
journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
pub_type: 临床试验,杂志文章
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
pub_type: 杂志文章,评审
doi:10.3109/08923973.2011.619987
更新日期:2012-10-01 00:00:00
abstract:INTRODUCTION:Parsley (Petroselinum crispum) has been traditionally used for the treatment of allergy, autoimmune and chronic inflammatory disorders. The present study aims to investigate the suppressive effects of parsley essential oil on mouse splenocytes and macrophages cells. METHODS AND MATERIALS:Parsley essential...
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
pub_type: 临床试验,杂志文章
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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更新日期:1993-03-01 00:00:00
abstract::The application of heat shock to different types of cells is known to cause multiple biochemical and metabolic changes. The predominant event though is an increased synthesis and expression of a family of proteins, the heat-shock proteins (Hsp). Some of these proteins are currently considered to be involved in the sig...
journal_title:Immunopharmacology and immunotoxicology
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journal_title:Immunopharmacology and immunotoxicology
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更新日期:2006-01-01 00:00:00