Abstract:
:The formation of metabolites of arachidonic acid by the cyclo-oxygenase and lipoxygenase pathways were determined in human lung tissue, obtained from surgery. In this measurement the chopped tissue was incubated with the calcium ionophore A23187. Formation of metabolites from [1-14C] arachidonic acid was also determined. The metabolites were extracted, separated by HPLC and identified by measurement of the absorption spectrum at 280 nm, radioactivity, biological activity and by radioimmunoassay. 6-keto-prostaglandin F1 alpha (6-ketoPGF1 alpha), the metabolite of prostacyclin, is the cyclo-oxygenase product present in the highest amount (400 +/- 49 ng g-1), followed by PGD2 (162 +/- 59 ng g-1) thromboxane B2 (102 +/- 32 ng g-1) PGE2 (104 +/- 46 ng g-1) and PGF2 alpha (58 +/- 26 ng g-1). The amounts of the lipoxygenase products are: leukotriene B4 (LTB4), 163 +/- 100 ng g-1; LTC4, 63 +/- 31 ng g-1 and LTE4 121 +/- 34 ng g-1. From [1-14C] arachidonic acid higher amounts of the cyclooxygenase than of the lipoxygenase products were formed, with the exception of PGE2. The effects of several of these substances on the contraction of human small airway smooth muscle were measured. The contractions, induced by equivalent amounts of LTC4 and a synthetic analogue of thromboxane T X A2 were approximately one hundred times those induced by PGD2, PGF2 alpha and histamine. These results suggest that thromboxane A2 and LTC4 are the most important arachidonic acid metabolites that induce bronchoconstriction in the human lung.
journal_name
Eur J Clin Investjournal_title
European journal of clinical investigationauthors
Zijlstra FJ,Naaktgeboren M,Mons H,Vincent JEdoi
10.1111/j.1365-2362.1987.tb02195.xsubject
Has Abstractpub_date
1987-08-01 00:00:00pages
325-9issue
4eissn
0014-2972issn
1365-2362journal_volume
17pub_type
杂志文章abstract::The influence of insulin on lipolysis and glucose metabolism in abdominal adipose tissue was studied in situ with the microdialysis technique during a euglycaemic insulin clamp (1 mU kg-1 min-1) in nine cirrhotic patients and 10 controls. The cirrhotic patients displayed a 50% decrease in glucose utilization rate duri...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1993.tb00739.x
更新日期:1993-12-01 00:00:00
abstract::Critical illness is an aetiologically and clinically heterogeneous syndrome that is characterised by organ failure and immune dysfunction. Mortality in critically ill patients is driven by inflammation-associated organ damage and a profound vulnerability to nosocomial infection. Both factors are influenced by the acti...
journal_title:European journal of clinical investigation
pub_type: 杂志文章,评审
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
pub_type: 杂志文章,评审
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更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Advanced glycation end-products (AGEs) are increased in situations with hyperglycemia and oxidative stress such as diabetes mellitus. They are products of nonenzymatic glycation and oxidation of proteins and lipids. The kidney plays an important role in clearance and metabolism of AGEs. METHODS:Medline and ...
journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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更新日期:1999-02-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2008.01991.x
更新日期:2008-09-01 00:00:00
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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更新日期:2007-11-01 00:00:00
abstract::In order to study the mechanisms by which nutrients influence post-trauma metabolism, Sprague-Dawley rats received a 25% full-thickness burn and were randomly assigned to receive 12.5 g kg-1 bodyweight (BW) per day amino acids (AA) only, AA and 14.7 g hydrous glucose kg-1 BW per day or AA and 14.7 g hydrous xylitol kg...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1991.tb01818.x
更新日期:1991-04-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-01-01 00:00:00
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journal_title:European journal of clinical investigation
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doi:10.1111/j.1365-2362.2004.01331.x
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doi:10.1046/j.1365-2362.2000.00598.x
更新日期:2000-02-01 00:00:00
abstract:BACKGROUND:Gastroesophageal reflux disease (GERD), including erosive reflux disease and non-erosive reflux disease (NERD), is a chronic disease with a significant negative effect on quality of life. State-of-the-art treatment involves proton pump inhibitors (PPIs). However, relapse of symptoms occurs in the majority of...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2010.02419.x
更新日期:2011-04-01 00:00:00
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journal_title:European journal of clinical investigation
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journal_title:European journal of clinical investigation
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doi:10.1046/j.1365-2362.1999.00498.x
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journal_title:European journal of clinical investigation
pub_type: 杂志文章,meta分析
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更新日期:2019-08-01 00:00:00
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journal_title:European journal of clinical investigation
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更新日期:1992-01-01 00:00:00
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journal_title:European journal of clinical investigation
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更新日期:2015-09-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
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更新日期:1996-10-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-03-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
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更新日期:2019-02-23 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1994.tb02029.x
更新日期:1994-12-01 00:00:00
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journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.1996.tb02142.x
更新日期:1996-10-01 00:00:00
abstract:BACKGROUND:The mechanisms responsible for the progressive failure of hypoglycaemia counterregulation in long-standing type 1 diabetes are poorly understood. Increased brain glucose uptake during hypoglycaemia or alterations of brain energy metabolism could effect glucose sensing by the brain and thus contribute to hypo...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1111/j.1365-2362.2006.01615.x
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND:The acute-phase response and anaemia of chronic disease are characterized by hypoferraemia associated with an increased ferritin synthesis, which might be mediated by the activated cytokine cascade. METHODS:We examined the prolonged effects of isolated limb perfusion (ILP) with recombinant human tumour necr...
journal_title:European journal of clinical investigation
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2362.1998.00323.x
更新日期:1998-07-01 00:00:00
abstract::The aim of this study was to investigate the involvement of the monocyte-derived cytokines interleukin 1beta (IL-1beta), interleukin 6 (IL-6) and tumour necrosis factor-alpha (TNF-alpha) in idiopathic inflammatory bowel disease. Endoscopic biopsies of normal and inflamed intestinal mucosa were obtained from patients w...
journal_title:European journal of clinical investigation
pub_type: 杂志文章
doi:10.1046/j.1365-2362.1996.123262.x
更新日期:1996-02-01 00:00:00